./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3960159873
<...>
Warning: Permanently added '10.128.10.35' (ED25519) to the list of known hosts.
execve("./syz-executor3960159873", ["./syz-executor3960159873"], 0x7fffd5b189d0 /* 10 vars */) = 0
brk(NULL) = 0x55558ee03000
brk(0x55558ee03d00) = 0x55558ee03d00
arch_prctl(ARCH_SET_FS, 0x55558ee03380) = 0
set_tid_address(0x55558ee03650) = 5828
set_robust_list(0x55558ee03660, 24) = 0
rseq(0x55558ee03ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3960159873", 4096) = 28
getrandom("\x88\x8c\xe8\x5f\x7e\x9e\x75\x0e", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558ee03d00
brk(0x55558ee24d00) = 0x55558ee24d00
brk(0x55558ee25000) = 0x55558ee25000
mprotect(0x7fdba99a0000, 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 5830 attached
, child_tidptr=0x55558ee03650) = 5830
[pid 5830] set_robust_list(0x55558ee03660, 24) = 0
[pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5830] setpgid(0, 0) = 0
[pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5830] write(3, "1000", 4) = 4
[pid 5830] close(3) = 0
[pid 5830] write(1, "executing program\n", 18executing program
) = 18
[pid 5830] memfd_create("syzkaller", 0) = 3
[pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5830] 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 5830] munmap(0x7fdba1400000, 138412032) = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5830] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5830] close(3) = 0
[pid 5830] close(4) = 0
[ 88.972010][ T5830] loop0: detected capacity change from 0 to 32768
[ 89.006032][ T5830] =======================================================
[ 89.006032][ T5830] WARNING: The mand mount option has been deprecated and
[pid 5830] mkdir("./file1", 0777) = 0
[ 89.006032][ T5830] and is ignored by this kernel. Remove the mand
[ 89.006032][ T5830] option from the mount to silence this warning.
[ 89.006032][ T5830] =======================================================
[pid 5830] mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,intr,noacl,") = 0
[pid 5830] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid 5830] chdir("./file1") = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 89.074956][ T5830] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
[pid 5830] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid 5830] mkdirat(AT_FDCWD, "./file1", 000) = 0
[pid 5830] mkdir("./bus", 000) = 0
[ 89.145545][ T5830] overlayfs: upper fs does not support tmpfile.
[ 89.154293][ T5830] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 89.161907][ T5830]
[ 89.164250][ T5830] ======================================================
[ 89.171268][ T5830] WARNING: possible circular locking dependency detected
[ 89.178301][ T5830] 6.15.0-syzkaller-13743-g8630c59e9936 #0 Not tainted
[ 89.185066][ T5830] ------------------------------------------------------
[ 89.192093][ T5830] syz-executor396/5830 is trying to acquire lock:
[ 89.198513][ T5830] ffff8880788e9800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[ 89.212063][ T5830]
[ 89.212063][ T5830] but task is already holding lock:
[ 89.219557][ T5830] ffff8880788edc78 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[ 89.229056][ T5830]
[ 89.229056][ T5830] which lock already depends on the new lock.
[ 89.229056][ T5830]
[ 89.239475][ T5830]
[ 89.239475][ T5830] the existing dependency chain (in reverse order) is:
[ 89.248494][ T5830]
[ 89.248494][ T5830] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}:
[ 89.256332][ T5830] lock_acquire+0x120/0x360
[ 89.261371][ T5830] down_write+0x96/0x1f0
[ 89.266153][ T5830] ocfs2_xattr_set_handle+0x3b0/0x7a0
[ 89.272079][ T5830] ocfs2_init_security_set+0xbd/0xe0
[ 89.277900][ T5830] ocfs2_mknod+0x137f/0x2050
[ 89.283029][ T5830] ocfs2_mkdir+0x191/0x440
[ 89.287980][ T5830] vfs_mkdir+0x303/0x510
[ 89.292752][ T5830] do_mkdirat+0x247/0x590
[ 89.297610][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 89.302902][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.307946][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.314382][ T5830]
[ 89.314382][ T5830] -> #3 (jbd2_handle){.+.+}-{0:0}:
[ 89.321701][ T5830] lock_acquire+0x120/0x360
[ 89.326750][ T5830] start_this_handle+0x1fa7/0x21c0
[ 89.332397][ T5830] jbd2__journal_start+0x2c1/0x5b0
[ 89.338054][ T5830] jbd2_journal_start+0x2a/0x40
[ 89.343454][ T5830] ocfs2_start_trans+0x376/0x6d0
[ 89.348920][ T5830] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 89.355352][ T5830] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 89.362259][ T5830] ocfs2_mknod+0xe08/0x2050
[ 89.367322][ T5830] ocfs2_mkdir+0x191/0x440
[ 89.372286][ T5830] vfs_mkdir+0x303/0x510
[ 89.377070][ T5830] do_mkdirat+0x247/0x590
[ 89.381942][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 89.387243][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.392277][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.398704][ T5830]
[ 89.398704][ T5830] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
[ 89.407239][ T5830] lock_acquire+0x120/0x360
[ 89.412277][ T5830] down_read+0x46/0x2e0
[ 89.416965][ T5830] ocfs2_start_trans+0x36a/0x6d0
[ 89.422516][ T5830] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 89.428970][ T5830] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 89.435834][ T5830] ocfs2_mknod+0xe08/0x2050
[ 89.440874][ T5830] ocfs2_mkdir+0x191/0x440
[ 89.446082][ T5830] vfs_mkdir+0x303/0x510
[ 89.450860][ T5830] do_mkdirat+0x247/0x590
[ 89.455719][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 89.461020][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.466059][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.472483][ T5830]
[ 89.472483][ T5830] -> #1 (sb_internal#2){.+.+}-{0:0}:
[ 89.479978][ T5830] lock_acquire+0x120/0x360
[ 89.485013][ T5830] ocfs2_start_trans+0x26b/0x6d0
[ 89.490487][ T5830] ocfs2_mknod+0xe93/0x2050
[ 89.495526][ T5830] ocfs2_mkdir+0x191/0x440
[ 89.500476][ T5830] vfs_mkdir+0x303/0x510
[ 89.505242][ T5830] do_mkdirat+0x247/0x590
[ 89.510101][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 89.515483][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.520518][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.526938][ T5830]
[ 89.526938][ T5830] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}:
[ 89.537560][ T5830] validate_chain+0xb9b/0x2140
[ 89.542867][ T5830] __lock_acquire+0xab9/0xd20
[ 89.548080][ T5830] lock_acquire+0x120/0x360
[ 89.553120][ T5830] down_write+0x96/0x1f0
[ 89.557892][ T5830] ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[ 89.564595][ T5830] ocfs2_reserve_clusters_with_limit+0x1be/0xba0
[ 89.571462][ T5830] ocfs2_init_xattr_set_ctxt+0x376/0x700
[ 89.577622][ T5830] ocfs2_xattr_set+0xb70/0x11f0
[ 89.583001][ T5830] __vfs_setxattr+0x43c/0x480
[ 89.588296][ T5830] __vfs_setxattr_noperm+0x12d/0x660
[ 89.594133][ T5830] vfs_setxattr+0x16b/0x2f0
[ 89.599262][ T5830] ovl_get_workdir+0xbb7/0x1730
[ 89.604733][ T5830] ovl_fill_super+0x1386/0x35d0
[ 89.610122][ T5830] get_tree_nodev+0xbb/0x150
[ 89.615241][ T5830] vfs_get_tree+0x8f/0x2b0
[ 89.620202][ T5830] do_new_mount+0x24a/0xa40
[ 89.625238][ T5830] __se_sys_mount+0x317/0x410
[ 89.630449][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.635483][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.641907][ T5830]
[ 89.641907][ T5830] other info that might help us debug this:
[ 89.641907][ T5830]
[ 89.652140][ T5830] Chain exists of:
[ 89.652140][ T5830] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem
[ 89.652140][ T5830]
[ 89.667909][ T5830] Possible unsafe locking scenario:
[ 89.667909][ T5830]
[ 89.675378][ T5830] CPU0 CPU1
[ 89.680761][ T5830] ---- ----
[ 89.686141][ T5830] lock(&oi->ip_xattr_sem);
[ 89.690756][ T5830] lock(jbd2_handle);
[ 89.697367][ T5830] lock(&oi->ip_xattr_sem);
[ 89.704494][ T5830] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
[ 89.711797][ T5830]
[ 89.711797][ T5830] *** DEADLOCK ***
[ 89.711797][ T5830]
[ 89.719956][ T5830] 4 locks held by syz-executor396/5830:
[ 89.725504][ T5830] #0: ffff8880344c40e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970
[ 89.735631][ T5830] #1: ffff8880287e8428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
[ 89.744801][ T5830] #2: ffff8880788edf40 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0
[ 89.755272][ T5830] #3: ffff8880788edc78 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[ 89.765248][ T5830]
[ 89.765248][ T5830] stack backtrace:
[ 89.771169][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: syz-executor396 Not tainted 6.15.0-syzkaller-13743-g8630c59e9936 #0 PREEMPT(full)
[ 89.771190][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 89.771204][ T5830] Call Trace:
[ 89.771216][ T5830]
[ 89.771224][ T5830] dump_stack_lvl+0x189/0x250
[ 89.771254][ T5830] ? __pfx_dump_stack_lvl+0x10/0x10
[ 89.771279][ T5830] ? __pfx__printk+0x10/0x10
[ 89.771297][ T5830] ? print_lock_name+0xde/0x100
[ 89.771325][ T5830] print_circular_bug+0x2ee/0x310
[ 89.771343][ T5830] check_noncircular+0x134/0x160
[ 89.771374][ T5830] validate_chain+0xb9b/0x2140
[ 89.771456][ T5830] ? __mutex_unlock_slowpath+0x1cd/0x700
[ 89.771486][ T5830] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 89.771507][ T5830] __lock_acquire+0xab9/0xd20
[ 89.771535][ T5830] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[ 89.771557][ T5830] lock_acquire+0x120/0x360
[ 89.771579][ T5830] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[ 89.771614][ T5830] ? is_bpf_text_address+0x26/0x2b0
[ 89.771641][ T5830] ? kernel_text_address+0xa5/0xe0
[ 89.771664][ T5830] down_write+0x96/0x1f0
[ 89.771685][ T5830] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[ 89.771707][ T5830] ? __pfx_down_write+0x10/0x10
[ 89.771728][ T5830] ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[ 89.771754][ T5830] ? check_noncircular+0xe0/0x160
[ 89.771783][ T5830] ? lockdep_unlock+0x89/0x120
[ 89.771802][ T5830] ? validate_chain+0x897/0x2140
[ 89.771829][ T5830] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10
[ 89.771850][ T5830] ? get_tree_nodev+0xbb/0x150
[ 89.771877][ T5830] ? __lock_acquire+0xab9/0xd20
[ 89.771907][ T5830] ? do_raw_spin_unlock+0x122/0x240
[ 89.771926][ T5830] ? _raw_spin_unlock+0x28/0x50
[ 89.771949][ T5830] ? ocfs2_alloc_should_use_local+0x152/0x310
[ 89.771968][ T5830] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0
[ 89.771996][ T5830] ocfs2_reserve_clusters_with_limit+0x1be/0xba0
[ 89.772025][ T5830] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10
[ 89.772056][ T5830] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10
[ 89.772078][ T5830] ? __lock_acquire+0xab9/0xd20
[ 89.772104][ T5830] ocfs2_init_xattr_set_ctxt+0x376/0x700
[ 89.772124][ T5830] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10
[ 89.772143][ T5830] ? ocfs2_xattr_set+0xb36/0x11f0
[ 89.772161][ T5830] ? up_write+0x1c4/0x420
[ 89.772176][ T5830] ? ocfs2_xattr_set+0x334/0x11f0
[ 89.772192][ T5830] ocfs2_xattr_set+0xb70/0x11f0
[ 89.772217][ T5830] ? __pfx_ocfs2_xattr_set+0x10/0x10
[ 89.772233][ T5830] ? up+0xde/0x150
[ 89.772251][ T5830] ? smack_log+0xef/0x3f0
[ 89.772269][ T5830] ? __pfx___console_unlock+0x10/0x10
[ 89.772285][ T5830] ? smk_access+0x14c/0x4e0
[ 89.772303][ T5830] ? smk_tskacc+0x2fc/0x370
[ 89.772328][ T5830] ? posix_xattr_acl+0x93/0xc0
[ 89.772343][ T5830] ? evm_protect_xattr+0x4d4/0xa90
[ 89.772372][ T5830] ? __pfx_evm_protect_xattr+0x10/0x10
[ 89.772396][ T5830] ? safesetid_security_capable+0xa9/0x1a0
[ 89.772418][ T5830] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10
[ 89.772436][ T5830] __vfs_setxattr+0x43c/0x480
[ 89.772464][ T5830] __vfs_setxattr_noperm+0x12d/0x660
[ 89.772490][ T5830] vfs_setxattr+0x16b/0x2f0
[ 89.772516][ T5830] ? __pfx_vfs_setxattr+0x10/0x10
[ 89.772539][ T5830] ? up_write+0x1c4/0x420
[ 89.772556][ T5830] ovl_get_workdir+0xbb7/0x1730
[ 89.772587][ T5830] ? __pfx_ovl_get_workdir+0x10/0x10
[ 89.772630][ T5830] ? do_raw_spin_unlock+0x122/0x240
[ 89.772649][ T5830] ? _raw_spin_unlock+0x28/0x50
[ 89.772671][ T5830] ? ovl_inuse_trylock+0xae/0xf0
[ 89.772697][ T5830] ovl_fill_super+0x1386/0x35d0
[ 89.772727][ T5830] ? rcu_is_watching+0x15/0xb0
[ 89.772756][ T5830] ? shrinker_register+0x124/0x230
[ 89.772774][ T5830] ? __pfx_ovl_fill_super+0x10/0x10
[ 89.772799][ T5830] ? __pfx___mutex_lock+0x10/0x10
[ 89.772815][ T5830] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 89.772834][ T5830] ? __raw_spin_lock_init+0x45/0x100
[ 89.772857][ T5830] ? sget_fc+0x962/0xa40
[ 89.772886][ T5830] ? __pfx_set_anon_super_fc+0x10/0x10
[ 89.772904][ T5830] ? __pfx_ovl_fill_super+0x10/0x10
[ 89.772929][ T5830] get_tree_nodev+0xbb/0x150
[ 89.772949][ T5830] vfs_get_tree+0x8f/0x2b0
[ 89.772970][ T5830] do_new_mount+0x24a/0xa40
[ 89.772995][ T5830] __se_sys_mount+0x317/0x410
[ 89.773020][ T5830] ? __pfx___se_sys_mount+0x10/0x10
[ 89.773042][ T5830] ? rcu_is_watching+0x15/0xb0
[ 89.773068][ T5830] ? __x64_sys_mount+0x20/0xc0
[ 89.773091][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.773106][ T5830] ? lockdep_hardirqs_on+0x9c/0x150
[ 89.773131][ T5830] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.773147][ T5830] ? clear_bhb_loop+0x60/0xb0
[ 89.773164][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.773181][ T5830] RIP: 0033:0x7fdba9928bd9
[ 89.773204][ T5830] 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
[ 89.773222][ T5830] RSP: 002b:00007ffd3751ac48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 89.773240][ T5830] RAX: ffffffffffffffda RBX: 00002000000000c0 RCX: 00007fdba9928bd9
[ 89.773252][ T5830] RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
[ 89.773264][ T5830] RBP: 00007fdba99a05f0 R08: 0000200000000a00 R09: 000055558ee044c0
[ 89.773275][ T5830] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd3751ac70
[ 89.773286][ T5830] R13: 00007ffd3751ae98 R14: 00002000000000c4 R15: 00007fdba997103b
[ 89.773304][ T5830]
[pid 5830] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5830] exit_group(0) = ?
[pid 5830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5830, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 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 5834 attached
[pid 5834] set_robust_list(0x55558ee03660, 24
[pid 5828] <... clone resumed>, child_tidptr=0x55558ee03650) = 5834
[pid 5834] <... set_robust_list resumed>) = 0
[pid 5834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5834] setpgid(0, 0) = 0
[pid 5834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5834] write(3, "1000", 4) = 4
[ 90.300418][ T5830] overlayfs: upper fs missing required features.
[pid 5834] close(3) = 0
executing program
[pid 5834] write(1, "executing program\n", 18) = 18
[pid 5834] memfd_create("syzkaller", 0) = 3
[pid 5834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5834] 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 5834] munmap(0x7fdba1400000, 138412032) = 0
[pid 5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5834] close(3) = 0
[pid 5834] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid 5834] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5834] mkdir("./bus", 000) = 0
[pid 5834] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5834] exit_group(0) = ?
[pid 5834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5834, si_uid=0, si_status=0, si_utime=2 /* 0.02 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, child_tidptr=0x55558ee03650) = 5835
./strace-static-x86_64: Process 5835 attached
[pid 5835] set_robust_list(0x55558ee03660, 24) = 0
[pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5835] setpgid(0, 0) = 0
[pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5835] write(3, "1000", 4) = 4
[pid 5835] close(3) = 0
executing program
[pid 5835] write(1, "executing program\n", 18) = 18
[pid 5835] memfd_create("syzkaller", 0) = 3
[pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[ 90.526989][ T5834] overlayfs: workdir and upperdir must reside under the same mount
[pid 5835] 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 5835] munmap(0x7fdba1400000, 138412032) = 0
[pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5835] close(3) = 0
[pid 5835] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5835] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5835] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5835] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5835] exit_group(0) = ?
[pid 5835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 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 5836 attached
[pid 5836] set_robust_list(0x55558ee03660, 24) = 0
[pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5836] setpgid(0, 0) = 0
[pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC
[pid 5828] <... clone resumed>, child_tidptr=0x55558ee03650) = 5836
[pid 5836] <... openat resumed>) = 3
[pid 5836] write(3, "1000", 4) = 4
[pid 5836] close(3) = 0
executing program
[pid 5836] write(1, "executing program\n", 18) = 18
[pid 5836] memfd_create("syzkaller", 0) = 3
[pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[ 90.707070][ T5835] overlayfs: workdir and upperdir must reside under the same mount
[pid 5836] 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 5836] munmap(0x7fdba1400000, 138412032) = 0
[pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5836] close(3) = 0
[pid 5836] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5836] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5836] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5836] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5836] exit_group(0) = ?
[pid 5836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=0, 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 5837 attached
[pid 5837] set_robust_list(0x55558ee03660, 24
[pid 5828] <... clone resumed>, child_tidptr=0x55558ee03650) = 5837
[pid 5837] <... set_robust_list resumed>) = 0
[pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5837] setpgid(0, 0) = 0
[pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5837] write(3, "1000", 4) = 4
[pid 5837] close(3) = 0
executing program
[pid 5837] write(1, "executing program\n", 18) = 18
[pid 5837] memfd_create("syzkaller", 0) = 3
[pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[ 90.898537][ T5836] overlayfs: workdir and upperdir must reside under the same mount
[pid 5837] 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 5837] munmap(0x7fdba1400000, 138412032) = 0
[pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5837] close(3) = 0
[pid 5837] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5837] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5837] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5837] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5837] exit_group(0) = ?
[pid 5837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 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 5838 attached
, child_tidptr=0x55558ee03650) = 5838
[pid 5838] set_robust_list(0x55558ee03660, 24) = 0
[pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 91.110864][ T5837] overlayfs: workdir and upperdir must reside under the same mount
[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
executing program
[pid 5838] write(1, "executing program\n", 18) = 18
[pid 5838] memfd_create("syzkaller", 0) = 3
[pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5838] close(3) = 0
[pid 5838] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5838] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5838] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5838] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=1 /* 0.01 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./strace-static-x86_64: Process 5839 attached
, child_tidptr=0x55558ee03650) = 5839
[ 91.407108][ T5838] overlayfs: workdir and upperdir must reside under the same mount
[pid 5839] set_robust_list(0x55558ee03660, 24) = 0
[pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5839] setpgid(0, 0) = 0
[pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5839] write(3, "1000", 4) = 4
[pid 5839] close(3) = 0
[pid 5839] write(1, "executing program\n", 18executing program
) = 18
[pid 5839] memfd_create("syzkaller", 0) = 3
[pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5839] 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 5839] munmap(0x7fdba1400000, 138412032) = 0
[pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5839] close(3) = 0
[pid 5839] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5839] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5839] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5839] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5839] exit_group(0) = ?
[pid 5839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=11 /* 0.11 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 5840 attached
, child_tidptr=0x55558ee03650) = 5840
[pid 5840] set_robust_list(0x55558ee03660, 24) = 0
[pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5840] setpgid(0, 0) = 0
[pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5840] write(3, "1000", 4) = 4
[pid 5840] close(3) = 0
executing program
[pid 5840] write(1, "executing program\n", 18) = 18
[ 91.742476][ T5839] overlayfs: workdir and upperdir must reside under the same mount
[pid 5840] memfd_create("syzkaller", 0) = 3
[pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[ 91.819874][ T1209] cfg80211: failed to load regulatory.db
[pid 5840] 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 5840] munmap(0x7fdba1400000, 138412032) = 0
[pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5840] close(3) = 0
[pid 5840] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5840] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5840] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5840] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5840] exit_group(0) = ?
[pid 5840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5840, si_uid=0, si_status=0, si_utime=2 /* 0.02 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 5842 attached
[pid 5842] set_robust_list(0x55558ee03660, 24
[pid 5828] <... clone resumed>, child_tidptr=0x55558ee03650) = 5842
[pid 5842] <... set_robust_list resumed>) = 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
[pid 5842] write(1, "executing program\n", 18executing program
) = 18
[pid 5842] memfd_create("syzkaller", 0) = 3
[pid 5842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[ 92.042858][ T5840] overlayfs: workdir and upperdir must reside under the same mount
[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(0x7fdba1400000, 138412032) = 0
[pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5842] close(3) = 0
[pid 5842] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5842] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5842] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5842] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=1 /* 0.01 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 5843 attached
, child_tidptr=0x55558ee03650) = 5843
[pid 5843] set_robust_list(0x55558ee03660, 24) = 0
[pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5843] setpgid(0, 0) = 0
[ 92.241542][ T5842] overlayfs: workdir and upperdir must reside under the same mount
[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(3) = 0
executing program
[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) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5843] close(3) = 0
[pid 5843] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5843] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5843] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5843] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=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 5845 attached
, child_tidptr=0x55558ee03650) = 5845
[ 92.536234][ T5843] overlayfs: workdir and upperdir must reside under the same mount
[pid 5845] set_robust_list(0x55558ee03660, 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) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5845] close(3) = 0
[pid 5845] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5845] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5845] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5845] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=0, 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 5846 attached
, child_tidptr=0x55558ee03650) = 5846
[ 92.862772][ T5845] overlayfs: workdir and upperdir must reside under the same mount
[pid 5846] set_robust_list(0x55558ee03660, 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
[pid 5846] write(1, "executing program\n", 18executing program
) = 18
[pid 5846] memfd_create("syzkaller", 0) = 3
[pid 5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5846] close(3) = 0
[pid 5846] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5846] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5846] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5846] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=2 /* 0.02 s */, si_stime=12 /* 0.12 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=0x55558ee03650) = 5849
./strace-static-x86_64: Process 5849 attached
[pid 5849] set_robust_list(0x55558ee03660, 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
[ 93.210903][ T5846] overlayfs: workdir and upperdir must reside under the same mount
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) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5849] close(3) = 0
[pid 5849] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5849] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5849] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5849] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=1 /* 0.01 s */, si_stime=13 /* 0.13 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=0x55558ee03650) = 5851
[ 93.495434][ T5849] overlayfs: workdir and upperdir must reside under the same mount
[pid 5851] set_robust_list(0x55558ee03660, 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
[pid 5851] write(1, "executing program\n", 18executing program
) = 18
[pid 5851] memfd_create("syzkaller", 0) = 3
[pid 5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5851] close(3) = 0
[pid 5851] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5851] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5851] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5851] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=2 /* 0.02 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(0x55558ee03660, 24
[pid 5828] <... clone resumed>, child_tidptr=0x55558ee03650) = 5852
[pid 5852] <... set_robust_list resumed>) = 0
[pid 5852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5852] setpgid(0, 0) = 0
[ 93.823044][ T5851] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5852] close(3) = 0
[pid 5852] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5852] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5852] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5852] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 94.148924][ T5852] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5853 attached
, child_tidptr=0x55558ee03650) = 5853
[pid 5853] set_robust_list(0x55558ee03660, 24) = 0
[pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5853] setpgid(0, 0) = 0
[pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5853] write(3, "1000", 4) = 4
[pid 5853] close(3) = 0
[pid 5853] write(1, "executing program\n", 18executing program
) = 18
[pid 5853] memfd_create("syzkaller", 0) = 3
[pid 5853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5853] 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 5853] munmap(0x7fdba1400000, 138412032) = 0
[pid 5853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5853] close(3) = 0
[pid 5853] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5853] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5853] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5853] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5853] exit_group(0) = ?
[pid 5853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5853, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=11 /* 0.11 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 94.443410][ T5853] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5854 attached
, child_tidptr=0x55558ee03650) = 5854
[pid 5854] set_robust_list(0x55558ee03660, 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) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5854] close(3) = 0
[pid 5854] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5854] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5854] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5854] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 94.769049][ T5854] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5855 attached
, child_tidptr=0x55558ee03650) = 5855
[pid 5855] set_robust_list(0x55558ee03660, 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) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5855] close(3) = 0
[pid 5855] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5855] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5855] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5855] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 95.058412][ T5855] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5857 attached
, child_tidptr=0x55558ee03650) = 5857
[pid 5857] set_robust_list(0x55558ee03660, 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
[pid 5857] write(1, "executing program\n", 18executing program
) = 18
[pid 5857] memfd_create("syzkaller", 0) = 3
[pid 5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[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(0x7fdba1400000, 138412032) = 0
[pid 5857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5857] close(3) = 0
[pid 5857] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5857] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5857] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5857] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=0, si_stime=15 /* 0.15 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 95.409683][ T5857] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5858 attached
, child_tidptr=0x55558ee03650) = 5858
[pid 5858] set_robust_list(0x55558ee03660, 24) = 0
[pid 5858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5858] setpgid(0, 0) = 0
[pid 5858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5858] write(3, "1000", 4) = 4
[pid 5858] close(3) = 0
executing program
[pid 5858] write(1, "executing program\n", 18) = 18
[pid 5858] memfd_create("syzkaller", 0) = 3
[pid 5858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5858] 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 5858] munmap(0x7fdba1400000, 138412032) = 0
[pid 5858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5858] close(3) = 0
[pid 5858] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5858] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5858] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5858] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5858] exit_group(0) = ?
[pid 5858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5858, si_uid=0, si_status=0, si_utime=2 /* 0.02 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 5859 attached
, child_tidptr=0x55558ee03650) = 5859
[ 95.783163][ T5858] overlayfs: workdir and upperdir must reside under the same mount
[pid 5859] set_robust_list(0x55558ee03660, 24) = 0
[pid 5859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5859] setpgid(0, 0) = 0
[pid 5859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5859] write(3, "1000", 4) = 4
[pid 5859] close(3) = 0
executing program
[pid 5859] write(1, "executing program\n", 18) = 18
[pid 5859] memfd_create("syzkaller", 0) = 3
[pid 5859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5859] 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 5859] munmap(0x7fdba1400000, 138412032) = 0
[pid 5859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5859] close(3) = 0
[pid 5859] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5859] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5859] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5859] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5859] exit_group(0) = ?
[pid 5859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5859, si_uid=0, si_status=0, si_utime=1 /* 0.01 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 5860 attached
, child_tidptr=0x55558ee03650) = 5860
[ 96.112467][ T5859] overlayfs: workdir and upperdir must reside under the same mount
[pid 5860] set_robust_list(0x55558ee03660, 24) = 0
[pid 5860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5860] setpgid(0, 0) = 0
[pid 5860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5860] write(3, "1000", 4) = 4
[pid 5860] close(3) = 0
executing program
[pid 5860] write(1, "executing program\n", 18) = 18
[pid 5860] memfd_create("syzkaller", 0) = 3
[pid 5860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5860] 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 5860] munmap(0x7fdba1400000, 138412032) = 0
[pid 5860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5860] close(3) = 0
[pid 5860] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5860] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5860] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5860] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5860] exit_group(0) = ?
[pid 5860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5860, si_uid=0, si_status=0, si_utime=2 /* 0.02 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 5861 attached
, child_tidptr=0x55558ee03650) = 5861
[ 96.474496][ T5860] overlayfs: workdir and upperdir must reside under the same mount
[pid 5861] set_robust_list(0x55558ee03660, 24) = 0
[pid 5861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5861] setpgid(0, 0) = 0
[pid 5861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5861] write(3, "1000", 4) = 4
[pid 5861] close(3) = 0
executing program
[pid 5861] write(1, "executing program\n", 18) = 18
[pid 5861] memfd_create("syzkaller", 0) = 3
[pid 5861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5861] 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 5861] munmap(0x7fdba1400000, 138412032) = 0
[pid 5861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5861] close(3) = 0
[pid 5861] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5861] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5861] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5861] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5861] exit_group(0) = ?
[pid 5861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5861, si_uid=0, si_status=0, si_utime=1 /* 0.01 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./strace-static-x86_64: Process 5862 attached
, child_tidptr=0x55558ee03650) = 5862
[ 96.808557][ T5861] overlayfs: workdir and upperdir must reside under the same mount
[pid 5862] set_robust_list(0x55558ee03660, 24) = 0
[pid 5862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5862] setpgid(0, 0) = 0
[pid 5862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5862] write(3, "1000", 4) = 4
[pid 5862] close(3) = 0
executing program
[pid 5862] write(1, "executing program\n", 18) = 18
[pid 5862] memfd_create("syzkaller", 0) = 3
[pid 5862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5862] 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 5862] munmap(0x7fdba1400000, 138412032) = 0
[pid 5862] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5862] close(3) = 0
[pid 5862] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5862] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5862] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5862] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5862] exit_group(0) = ?
[pid 5862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5862, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 97.143403][ T5862] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5863 attached
, child_tidptr=0x55558ee03650) = 5863
[pid 5863] set_robust_list(0x55558ee03660, 24) = 0
[pid 5863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5863] setpgid(0, 0) = 0
[pid 5863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5863] write(3, "1000", 4) = 4
[pid 5863] close(3) = 0
executing program
[pid 5863] write(1, "executing program\n", 18) = 18
[pid 5863] memfd_create("syzkaller", 0) = 3
[pid 5863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5863] 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 5863] munmap(0x7fdba1400000, 138412032) = 0
[pid 5863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5863] close(3) = 0
[pid 5863] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5863] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5863] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5863] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5863] exit_group(0) = ?
[pid 5863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5863, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 97.490702][ T5863] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5864 attached
, child_tidptr=0x55558ee03650) = 5864
[pid 5864] set_robust_list(0x55558ee03660, 24) = 0
[pid 5864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5864] setpgid(0, 0) = 0
[pid 5864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5864] write(3, "1000", 4) = 4
[pid 5864] close(3) = 0
[pid 5864] write(1, "executing program\n", 18executing program
) = 18
[pid 5864] memfd_create("syzkaller", 0) = 3
[pid 5864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5864] 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 5864] munmap(0x7fdba1400000, 138412032) = 0
[pid 5864] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5864] close(3) = 0
[pid 5864] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5864] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5864] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5864] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5864] exit_group(0) = ?
[pid 5864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5864, si_uid=0, si_status=0, si_utime=1 /* 0.01 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 5865 attached
, child_tidptr=0x55558ee03650) = 5865
[pid 5865] set_robust_list(0x55558ee03660, 24) = 0
[pid 5865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5865] setpgid(0, 0) = 0
[pid 5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5865] write(3, "1000", 4) = 4
[ 97.825408][ T5864] overlayfs: workdir and upperdir must reside under the same mount
[pid 5865] close(3) = 0
[pid 5865] write(1, "executing program\n", 18executing program
) = 18
[pid 5865] memfd_create("syzkaller", 0) = 3
[pid 5865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5865] 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 5865] munmap(0x7fdba1400000, 138412032) = 0
[pid 5865] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5865] close(3) = 0
[pid 5865] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5865] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5865] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5865] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5865] exit_group(0) = ?
[pid 5865] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5865, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 98.130807][ T5865] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5866 attached
, child_tidptr=0x55558ee03650) = 5866
[pid 5866] set_robust_list(0x55558ee03660, 24) = 0
[pid 5866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5866] setpgid(0, 0) = 0
[pid 5866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5866] write(3, "1000", 4) = 4
[pid 5866] close(3) = 0
executing program
[pid 5866] write(1, "executing program\n", 18) = 18
[pid 5866] memfd_create("syzkaller", 0) = 3
[pid 5866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5866] 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 5866] munmap(0x7fdba1400000, 138412032) = 0
[pid 5866] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5866] close(3) = 0
[pid 5866] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5866] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5866] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5866] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5866] exit_group(0) = ?
[pid 5866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5866, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=12 /* 0.12 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=0x55558ee03650) = 5868
./strace-static-x86_64: Process 5868 attached
[ 98.473377][ T5866] overlayfs: workdir and upperdir must reside under the same mount
[pid 5868] set_robust_list(0x55558ee03660, 24) = 0
[pid 5868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5868] setpgid(0, 0) = 0
[pid 5868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5868] write(3, "1000", 4) = 4
[pid 5868] close(3) = 0
executing program
[pid 5868] write(1, "executing program\n", 18) = 18
[pid 5868] memfd_create("syzkaller", 0) = 3
[pid 5868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5868] 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 5868] munmap(0x7fdba1400000, 138412032) = 0
[pid 5868] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5868] close(3) = 0
[pid 5868] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5868] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5868] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5868] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5868] exit_group(0) = ?
[pid 5868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5868, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 98.786480][ T5868] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5869 attached
, child_tidptr=0x55558ee03650) = 5869
[pid 5869] set_robust_list(0x55558ee03660, 24) = 0
[pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5869] setpgid(0, 0) = 0
[pid 5869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5869] write(3, "1000", 4) = 4
[pid 5869] close(3) = 0
[pid 5869] write(1, "executing program\n", 18executing program
) = 18
[pid 5869] memfd_create("syzkaller", 0) = 3
[pid 5869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdba1400000
[pid 5869] 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 5869] munmap(0x7fdba1400000, 138412032) = 0
[pid 5869] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5869] close(3) = 0
[pid 5869] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5869] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5869] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5869] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5869] exit_group(0) = ?
[pid 5869] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5869, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 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 5870 attached
, child_tidptr=0x55558ee03650) = 5870