./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor539040862 <...> Warning: Permanently added '10.128.1.144' (ED25519) to the list of known hosts. execve("./syz-executor539040862", ["./syz-executor539040862"], 0x7ffd68a9bd20 /* 10 vars */) = 0 brk(NULL) = 0x55555ed45000 brk(0x55555ed45d00) = 0x55555ed45d00 arch_prctl(ARCH_SET_FS, 0x55555ed45380) = 0 set_tid_address(0x55555ed45650) = 5837 set_robust_list(0x55555ed45660, 24) = 0 rseq(0x55555ed45ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor539040862", 4096) = 27 getrandom("\x26\x21\x63\xa6\xfa\x6f\x4b\xf2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555ed45d00 brk(0x55555ed66d00) = 0x55555ed66d00 brk(0x55555ed67000) = 0x55555ed67000 mprotect(0x7ff8818b1000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5838 attached , child_tidptr=0x55555ed45650) = 5838 [pid 5838] set_robust_list(0x55555ed45660, 24) = 0 [pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5838] setpgid(0, 0) = 0 [pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5838] write(3, "1000", 4) = 4 [pid 5838] close(3) = 0 [pid 5838] write(1, "executing program\n", 18executing program ) = 18 [pid 5838] memfd_create("syzkaller", 0) = 3 [pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5838] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5838] munmap(0x7ff879200000, 138412032) = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5838] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5838] close(3) = 0 [pid 5838] close(4) = 0 [pid 5838] mkdir("./file1", 0777) = 0 [ 106.122307][ T5838] loop0: detected capacity change from 0 to 32768 [pid 5838] mount("/dev/loop0", "./file1", "ocfs2", 0, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,errors=remount-ro,acl"...) = 0 [pid 5838] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5838] chdir("./file1") = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 106.188094][ T5838] ocfs2: Slot 0 on device (7,0) was already allocated to this node! [ 106.209138][ T5838] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 106.235861][ T5838] [ 106.238252][ T5838] ====================================================== [ 106.245649][ T5838] WARNING: possible circular locking dependency detected [ 106.252950][ T5838] 6.16.0-rc2-syzkaller-00045-g4663747812d1 #0 Not tainted [ 106.260900][ T5838] ------------------------------------------------------ [ 106.268209][ T5838] syz-executor539/5838 is trying to acquire lock: [ 106.275034][ T5838] ffff888073c522e0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xb6/0x320 [ 106.285969][ T5838] [ 106.285969][ T5838] but task is already holding lock: [ 106.293407][ T5838] ffff888073c52378 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa4/0x320 [ 106.304372][ T5838] [ 106.304372][ T5838] which lock already depends on the new lock. [ 106.304372][ T5838] [ 106.315069][ T5838] [ 106.315069][ T5838] the existing dependency chain (in reverse order) is: [ 106.324988][ T5838] [ 106.324988][ T5838] -> #4 (&oi->ip_xattr_sem){++++}-{4:4}: [ 106.333484][ T5838] lock_acquire+0x120/0x360 [ 106.339183][ T5838] down_read+0x46/0x2e0 [ 106.343999][ T5838] ocfs2_init_acl+0x2f9/0x720 [ 106.349356][ T5838] ocfs2_mknod+0x1321/0x2050 [ 106.354591][ T5838] ocfs2_create+0x1a5/0x440 [ 106.359956][ T5838] path_openat+0x14f1/0x3830 [ 106.365287][ T5838] do_filp_open+0x1fa/0x410 [ 106.370443][ T5838] do_sys_openat2+0x121/0x1c0 [ 106.375746][ T5838] __x64_sys_openat+0x138/0x170 [ 106.381647][ T5838] do_syscall_64+0xfa/0x3b0 [ 106.387092][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.394763][ T5838] [ 106.394763][ T5838] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 106.402916][ T5838] lock_acquire+0x120/0x360 [ 106.408085][ T5838] start_this_handle+0x1fa7/0x21c0 [ 106.414039][ T5838] jbd2__journal_start+0x2c1/0x5b0 [ 106.419788][ T5838] jbd2_journal_start+0x2a/0x40 [ 106.425384][ T5838] ocfs2_start_trans+0x376/0x6d0 [ 106.431335][ T5838] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 106.438609][ T5838] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 106.445792][ T5838] ocfs2_mknod+0xe08/0x2050 [ 106.451047][ T5838] ocfs2_create+0x1a5/0x440 [ 106.456489][ T5838] path_openat+0x14f1/0x3830 [ 106.461743][ T5838] do_filp_open+0x1fa/0x410 [ 106.467008][ T5838] do_sys_openat2+0x121/0x1c0 [ 106.472250][ T5838] __x64_sys_openat+0x138/0x170 [ 106.477847][ T5838] do_syscall_64+0xfa/0x3b0 [ 106.482998][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.490507][ T5838] [ 106.490507][ T5838] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 106.499789][ T5838] lock_acquire+0x120/0x360 [ 106.505396][ T5838] down_read+0x46/0x2e0 [ 106.510612][ T5838] ocfs2_start_trans+0x36a/0x6d0 [ 106.517108][ T5838] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 106.525327][ T5838] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 106.532932][ T5838] ocfs2_mknod+0xe08/0x2050 [ 106.538190][ T5838] ocfs2_create+0x1a5/0x440 [ 106.543856][ T5838] path_openat+0x14f1/0x3830 [ 106.549171][ T5838] do_filp_open+0x1fa/0x410 [ 106.554604][ T5838] do_sys_openat2+0x121/0x1c0 [ 106.560049][ T5838] __x64_sys_openat+0x138/0x170 [ 106.566672][ T5838] do_syscall_64+0xfa/0x3b0 [ 106.571852][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.578935][ T5838] [ 106.578935][ T5838] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 106.586822][ T5838] lock_acquire+0x120/0x360 [ 106.592245][ T5838] ocfs2_start_trans+0x26b/0x6d0 [ 106.597783][ T5838] ocfs2_truncate_file+0x643/0x1420 [ 106.604811][ T5838] ocfs2_setattr+0x1520/0x1b40 [ 106.610139][ T5838] notify_change+0xb33/0xe40 [ 106.615504][ T5838] do_truncate+0x1a4/0x220 [ 106.620774][ T5838] path_openat+0x306c/0x3830 [ 106.626644][ T5838] do_filp_open+0x1fa/0x410 [ 106.631869][ T5838] do_sys_openat2+0x121/0x1c0 [ 106.637341][ T5838] __x64_sys_openat+0x138/0x170 [ 106.643768][ T5838] do_syscall_64+0xfa/0x3b0 [ 106.648873][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.655398][ T5838] [ 106.655398][ T5838] -> #0 (&oi->ip_alloc_sem){+.+.}-{4:4}: [ 106.663361][ T5838] validate_chain+0xb9b/0x2140 [ 106.668720][ T5838] __lock_acquire+0xab9/0xd20 [ 106.674423][ T5838] lock_acquire+0x120/0x360 [ 106.679729][ T5838] down_write+0x96/0x1f0 [ 106.684758][ T5838] ocfs2_try_remove_refcount_tree+0xb6/0x320 [ 106.692010][ T5838] ocfs2_truncate_file+0xda0/0x1420 [ 106.697955][ T5838] ocfs2_setattr+0x1520/0x1b40 [ 106.703387][ T5838] notify_change+0xb33/0xe40 [ 106.708569][ T5838] do_truncate+0x1a4/0x220 [ 106.713626][ T5838] path_openat+0x306c/0x3830 [ 106.718844][ T5838] do_filp_open+0x1fa/0x410 [ 106.724010][ T5838] do_sys_openat2+0x121/0x1c0 [ 106.729280][ T5838] __x64_sys_openat+0x138/0x170 [ 106.734719][ T5838] do_syscall_64+0xfa/0x3b0 [ 106.739803][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.746351][ T5838] [ 106.746351][ T5838] other info that might help us debug this: [ 106.746351][ T5838] [ 106.756792][ T5838] Chain exists of: [ 106.756792][ T5838] &oi->ip_alloc_sem --> jbd2_handle --> &oi->ip_xattr_sem [ 106.756792][ T5838] [ 106.770146][ T5838] Possible unsafe locking scenario: [ 106.770146][ T5838] [ 106.777863][ T5838] CPU0 CPU1 [ 106.783675][ T5838] ---- ---- [ 106.789074][ T5838] lock(&oi->ip_xattr_sem); [ 106.793728][ T5838] lock(jbd2_handle); [ 106.800374][ T5838] lock(&oi->ip_xattr_sem); [ 106.807734][ T5838] lock(&oi->ip_alloc_sem); [ 106.812355][ T5838] [ 106.812355][ T5838] *** DEADLOCK *** [ 106.812355][ T5838] [ 106.820863][ T5838] 3 locks held by syz-executor539/5838: [ 106.826536][ T5838] #0: ffff888034d5c428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 106.836470][ T5838] #1: ffff888073c52640 (&sb->s_type->i_mutex_key#14){+.+.}-{4:4}, at: do_truncate+0x171/0x220 [ 106.847071][ T5838] #2: ffff888073c52378 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa4/0x320 [ 106.859064][ T5838] [ 106.859064][ T5838] stack backtrace: [ 106.865358][ T5838] CPU: 0 UID: 0 PID: 5838 Comm: syz-executor539 Not tainted 6.16.0-rc2-syzkaller-00045-g4663747812d1 #0 PREEMPT(full) [ 106.865380][ T5838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 106.865395][ T5838] Call Trace: [ 106.865410][ T5838] [ 106.865418][ T5838] dump_stack_lvl+0x189/0x250 [ 106.865454][ T5838] ? __pfx_dump_stack_lvl+0x10/0x10 [ 106.865479][ T5838] ? __pfx__printk+0x10/0x10 [ 106.865496][ T5838] ? print_lock_name+0xde/0x100 [ 106.865524][ T5838] print_circular_bug+0x2ee/0x310 [ 106.865552][ T5838] check_noncircular+0x134/0x160 [ 106.865580][ T5838] validate_chain+0xb9b/0x2140 [ 106.865615][ T5838] __lock_acquire+0xab9/0xd20 [ 106.865639][ T5838] ? ocfs2_try_remove_refcount_tree+0xb6/0x320 [ 106.865664][ T5838] lock_acquire+0x120/0x360 [ 106.865690][ T5838] ? ocfs2_try_remove_refcount_tree+0xb6/0x320 [ 106.865720][ T5838] down_write+0x96/0x1f0 [ 106.865736][ T5838] ? ocfs2_try_remove_refcount_tree+0xb6/0x320 [ 106.865761][ T5838] ? __pfx_down_write+0x10/0x10 [ 106.865780][ T5838] ocfs2_try_remove_refcount_tree+0xb6/0x320 [ 106.865806][ T5838] ? __pfx_ocfs2_try_remove_refcount_tree+0x10/0x10 [ 106.865832][ T5838] ? up_write+0x1c4/0x420 [ 106.865848][ T5838] ocfs2_truncate_file+0xda0/0x1420 [ 106.865872][ T5838] ? __pfx_ocfs2_truncate_file+0x10/0x10 [ 106.865890][ T5838] ? do_raw_spin_unlock+0x122/0x240 [ 106.865908][ T5838] ? _raw_spin_unlock+0x28/0x50 [ 106.865928][ T5838] ? ocfs2_inode_lock_tracker+0x3ec/0x660 [ 106.865954][ T5838] ? __pfx_ocfs2_inode_lock_tracker+0x10/0x10 [ 106.865976][ T5838] ? ocfs2_rw_lock+0x13a/0x240 [ 106.865995][ T5838] ? __pfx___dquot_initialize+0x10/0x10 [ 106.866017][ T5838] ? __pfx_ocfs2_rw_lock+0x10/0x10 [ 106.866036][ T5838] ? setattr_prepare+0x1e7/0xac0 [ 106.866055][ T5838] ? jbd2_journal_begin_ordered_truncate+0xbb/0x150 [ 106.866077][ T5838] ocfs2_setattr+0x1520/0x1b40 [ 106.866100][ T5838] ? __pfx_ocfs2_setattr+0x10/0x10 [ 106.866120][ T5838] ? smk_tskacc+0x2fc/0x370 [ 106.866137][ T5838] ? smack_inode_setattr+0x17b/0x200 [ 106.866154][ T5838] ? __pfx_smack_inode_setattr+0x10/0x10 [ 106.866174][ T5838] ? current_time+0x222/0x370 [ 106.866197][ T5838] ? evm_inode_setattr+0x1b6/0x7d0 [ 106.866220][ T5838] ? __pfx_current_time+0x10/0x10 [ 106.866246][ T5838] ? try_break_deleg+0x79/0x130 [ 106.866262][ T5838] ? __pfx_ocfs2_setattr+0x10/0x10 [ 106.866280][ T5838] notify_change+0xb33/0xe40 [ 106.866302][ T5838] do_truncate+0x1a4/0x220 [ 106.866322][ T5838] ? __pfx_do_truncate+0x10/0x10 [ 106.866348][ T5838] path_openat+0x306c/0x3830 [ 106.866364][ T5838] ? arch_stack_walk+0xfc/0x150 [ 106.866402][ T5838] ? __pfx_path_openat+0x10/0x10 [ 106.866416][ T5838] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.866525][ T5838] do_filp_open+0x1fa/0x410 [ 106.866548][ T5838] ? __lock_acquire+0xab9/0xd20 [ 106.866572][ T5838] ? __pfx_do_filp_open+0x10/0x10 [ 106.866599][ T5838] ? _raw_spin_unlock+0x28/0x50 [ 106.866621][ T5838] ? alloc_fd+0x64c/0x6c0 [ 106.866647][ T5838] do_sys_openat2+0x121/0x1c0 [ 106.866681][ T5838] ? __pfx_do_sys_openat2+0x10/0x10 [ 106.866710][ T5838] ? rcu_is_watching+0x15/0xb0 [ 106.866737][ T5838] __x64_sys_openat+0x138/0x170 [ 106.866765][ T5838] do_syscall_64+0xfa/0x3b0 [ 106.866791][ T5838] ? lockdep_hardirqs_on+0x9c/0x150 [ 106.866817][ T5838] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.866833][ T5838] ? clear_bhb_loop+0x60/0xb0 [ 106.866852][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 106.866871][ T5838] RIP: 0033:0x7ff881839ad9 [ 106.866898][ T5838] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [ 106.866912][ T5838] RSP: 002b:00007ffe4531e7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 106.866930][ T5838] RAX: ffffffffffffffda RBX: 0000000000000040 RCX: 00007ff881839ad9 [ 106.866943][ T5838] RDX: 000000000000275a RSI: 0000200000000040 RDI: 00000000ffffff9c [ 106.866954][ T5838] RBP: 0000200000000040 R08: 000055555ed464c0 R09: 000055555ed464c0 [ 106.866966][ T5838] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe4531e7e0 [ 106.866977][ T5838] R13: 00007ffe4531ea08 R14: 431bde82d7b634db R15: 00007ff88188203b [ 106.866996][ T5838] [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 68 [pid 5838] exit_group(0) = ? [pid 5838] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5838, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5841 attached , child_tidptr=0x55555ed45650) = 5841 [pid 5841] set_robust_list(0x55555ed45660, 24) = 0 [pid 5841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5841] setpgid(0, 0) = 0 [pid 5841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5841] write(3, "1000", 4) = 4 [pid 5841] close(3executing program ) = 0 [pid 5841] write(1, "executing program\n", 18) = 18 [pid 5841] memfd_create("syzkaller", 0) = 3 [pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5841] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5841] munmap(0x7ff879200000, 138412032) = 0 [pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5841] close(3) = 0 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5841] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5841] exit_group(0) = ? [pid 5841] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5841, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5842 attached , child_tidptr=0x55555ed45650) = 5842 [pid 5842] set_robust_list(0x55555ed45660, 24) = 0 [pid 5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5842] setpgid(0, 0) = 0 [pid 5842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5842] write(3, "1000", 4) = 4 [pid 5842] close(3) = 0 executing program [pid 5842] write(1, "executing program\n", 18) = 18 [pid 5842] memfd_create("syzkaller", 0) = 3 [pid 5842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5842] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5842] munmap(0x7ff879200000, 138412032) = 0 [pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5842] close(3) = 0 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5842] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5842] exit_group(0) = ? [pid 5842] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5842, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5843 attached , child_tidptr=0x55555ed45650) = 5843 [pid 5843] set_robust_list(0x55555ed45660, 24) = 0 [pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5843] setpgid(0, 0) = 0 [pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5843] write(3, "1000", 4) = 4 [pid 5843] close(3executing program ) = 0 [pid 5843] write(1, "executing program\n", 18) = 18 [pid 5843] memfd_create("syzkaller", 0) = 3 [pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5843] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5843] munmap(0x7ff879200000, 138412032) = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5843] close(3) = 0 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5843] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5843] exit_group(0) = ? [pid 5843] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5843, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5844 attached , child_tidptr=0x55555ed45650) = 5844 [pid 5844] set_robust_list(0x55555ed45660, 24) = 0 [pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5844] setpgid(0, 0) = 0 [pid 5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5844] write(3, "1000", 4) = 4 [pid 5844] close(3) = 0 executing program [pid 5844] write(1, "executing program\n", 18) = 18 [pid 5844] memfd_create("syzkaller", 0) = 3 [pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5844] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5844] munmap(0x7ff879200000, 138412032) = 0 [pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5844] close(3) = 0 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5844] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5844] exit_group(0) = ? [pid 5844] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5844, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555ed45650) = 5845 ./strace-static-x86_64: Process 5845 attached [pid 5845] set_robust_list(0x55555ed45660, 24) = 0 [pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] setpgid(0, 0) = 0 [pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1000", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] write(1, "executing program\n", 18executing program ) = 18 [pid 5845] memfd_create("syzkaller", 0) = 3 [pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5845] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5845] munmap(0x7ff879200000, 138412032) = 0 [pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5845] close(3) = 0 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5845] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5845] exit_group(0) = ? [pid 5845] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5845, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=18 /* 0.18 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5846 attached , child_tidptr=0x55555ed45650) = 5846 [pid 5846] set_robust_list(0x55555ed45660, 24) = 0 [pid 5846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5846] setpgid(0, 0) = 0 [pid 5846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5846] write(3, "1000", 4) = 4 [pid 5846] close(3) = 0 executing program [pid 5846] write(1, "executing program\n", 18) = 18 [pid 5846] memfd_create("syzkaller", 0) = 3 [pid 5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5846] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5846] munmap(0x7ff879200000, 138412032) = 0 [pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5846] close(3) = 0 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5846] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5846] exit_group(0) = ? [pid 5846] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5846, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=14 /* 0.14 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5848 attached , child_tidptr=0x55555ed45650) = 5848 [pid 5848] set_robust_list(0x55555ed45660, 24) = 0 [pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5848] setpgid(0, 0) = 0 [pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1000", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] write(1, "executing program\n", 18executing program ) = 18 [pid 5848] memfd_create("syzkaller", 0) = 3 [pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5848] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5848] munmap(0x7ff879200000, 138412032) = 0 [pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5848] close(3) = 0 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5848] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5848] exit_group(0) = ? [pid 5848] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5848, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5849 attached , child_tidptr=0x55555ed45650) = 5849 [pid 5849] set_robust_list(0x55555ed45660, 24) = 0 [pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5849] setpgid(0, 0) = 0 [pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5849] write(3, "1000", 4) = 4 [pid 5849] close(3) = 0 executing program [pid 5849] write(1, "executing program\n", 18) = 18 [pid 5849] memfd_create("syzkaller", 0) = 3 [pid 5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5849] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5849] munmap(0x7ff879200000, 138412032) = 0 [pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5849] close(3) = 0 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5849] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5849] exit_group(0) = ? [pid 5849] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5849, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=18 /* 0.18 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5850 attached , child_tidptr=0x55555ed45650) = 5850 [pid 5850] set_robust_list(0x55555ed45660, 24) = 0 [pid 5850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5850] setpgid(0, 0) = 0 [pid 5850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5850] write(3, "1000", 4) = 4 [pid 5850] close(3) = 0 executing program [pid 5850] write(1, "executing program\n", 18) = 18 [pid 5850] memfd_create("syzkaller", 0) = 3 [pid 5850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5850] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5850] munmap(0x7ff879200000, 138412032) = 0 [pid 5850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5850] close(3) = 0 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5850] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5850] exit_group(0) = ? [pid 5850] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5850, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5851 attached , child_tidptr=0x55555ed45650) = 5851 [pid 5851] set_robust_list(0x55555ed45660, 24) = 0 [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5851] setpgid(0, 0) = 0 [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5851] write(3, "1000", 4) = 4 [pid 5851] close(3) = 0 executing program [pid 5851] write(1, "executing program\n", 18) = 18 [pid 5851] memfd_create("syzkaller", 0) = 3 [pid 5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5851] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5851] munmap(0x7ff879200000, 138412032) = 0 [pid 5851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5851] close(3) = 0 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5851] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5851] exit_group(0) = ? [pid 5851] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5851, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5852 attached [pid 5852] set_robust_list(0x55555ed45660, 24 [pid 5837] <... clone resumed>, child_tidptr=0x55555ed45650) = 5852 [pid 5852] <... set_robust_list resumed>) = 0 [pid 5852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5852] setpgid(0, 0) = 0 [pid 5852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1000", 4) = 4 [pid 5852] close(3) = 0 executing program [pid 5852] write(1, "executing program\n", 18) = 18 [pid 5852] memfd_create("syzkaller", 0) = 3 [pid 5852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5852] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5852] munmap(0x7ff879200000, 138412032) = 0 [pid 5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5852] close(3) = 0 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5852] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5852] exit_group(0) = ? [pid 5852] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5852, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5854 attached , child_tidptr=0x55555ed45650) = 5854 [pid 5854] set_robust_list(0x55555ed45660, 24) = 0 [pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5854] setpgid(0, 0) = 0 [pid 5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "1000", 4) = 4 [pid 5854] close(3) = 0 executing program [pid 5854] write(1, "executing program\n", 18) = 18 [pid 5854] memfd_create("syzkaller", 0) = 3 [pid 5854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5854] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5854] munmap(0x7ff879200000, 138412032) = 0 [pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5854] close(3) = 0 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5854] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5854] exit_group(0) = ? [pid 5854] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5854, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=16 /* 0.16 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5855 attached , child_tidptr=0x55555ed45650) = 5855 [pid 5855] set_robust_list(0x55555ed45660, 24) = 0 [pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5855] setpgid(0, 0) = 0 [pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5855] write(3, "1000", 4) = 4 [pid 5855] close(3) = 0 executing program [pid 5855] write(1, "executing program\n", 18) = 18 [pid 5855] memfd_create("syzkaller", 0) = 3 [pid 5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5855] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5855] munmap(0x7ff879200000, 138412032) = 0 [pid 5855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5855] close(3) = 0 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5855] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5855] exit_group(0) = ? [pid 5855] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5855, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached , child_tidptr=0x55555ed45650) = 5856 [pid 5856] set_robust_list(0x55555ed45660, 24) = 0 [pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5856] setpgid(0, 0) = 0 [pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5856] write(3, "1000", 4) = 4 [pid 5856] close(3) = 0 executing program [pid 5856] write(1, "executing program\n", 18) = 18 [pid 5856] memfd_create("syzkaller", 0) = 3 [pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5856] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5856] munmap(0x7ff879200000, 138412032) = 0 [pid 5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5856] close(3) = 0 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5856] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5856] exit_group(0) = ? [pid 5856] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5856, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=16 /* 0.16 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5857 attached , child_tidptr=0x55555ed45650) = 5857 [pid 5857] set_robust_list(0x55555ed45660, 24) = 0 [pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5857] setpgid(0, 0) = 0 [pid 5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5857] write(3, "1000", 4) = 4 [pid 5857] close(3) = 0 executing program [pid 5857] write(1, "executing program\n", 18) = 18 [pid 5857] memfd_create("syzkaller", 0) = 3 [pid 5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff879200000 [pid 5857] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5857] munmap(0x7ff879200000, 138412032) = 0 [pid 5857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5857] close(3) = 0 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 7 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 9 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 11 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 12 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 13 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 14 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 15 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 16 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 17 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 18 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 19 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 20 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 21 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 22 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 23 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 24 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 25 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 26 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 27 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 28 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 29 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 30 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 31 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 32 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 33 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 34 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 35 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 36 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 37 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 38 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 39 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 40 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 41 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 42 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 43 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 44 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 45 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 46 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 47 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 48 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 49 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 50 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 51 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 52 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 53 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 54 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 55 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 56 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 57 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 58 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 59 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 60 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 61 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 62 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 63 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 64 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 65 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 66 [pid 5857] openat(AT_FDCWD, "cpuacct.usage_percpu_user", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 67 [pid 5857] exit_group(0) = ? [pid 5857] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5857, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555ed45650) = 5858 ./strace-static-x86_64: Process 5858 attached