./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3593791048
<...>
Warning: Permanently added '10.128.0.112' (ED25519) to the list of known hosts.
execve("./syz-executor3593791048", ["./syz-executor3593791048"], 0x7fffe955aac0 /* 10 vars */) = 0
brk(NULL) = 0x555556b7d000
brk(0x555556b7dd00) = 0x555556b7dd00
arch_prctl(ARCH_SET_FS, 0x555556b7d380) = 0
set_tid_address(0x555556b7d650) = 5828
set_robust_list(0x555556b7d660, 24) = 0
rseq(0x555556b7dca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3593791048", 4096) = 28
getrandom("\x09\x6b\x13\xca\x8c\x51\x97\x7f", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555556b7dd00
brk(0x555556b9ed00) = 0x555556b9ed00
brk(0x555556b9f000) = 0x555556b9f000
mprotect(0x7f4208489000, 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=0x555556b7d650) = 5830
[pid 5830] set_robust_list(0x555556b7d660, 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", 18) = 18
executing program
[pid 5830] memfd_create("syzkaller", 0) = 3
[pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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
[pid 5830] mkdir("./file1", 0777) = 0
[ 88.598425][ T5830] loop0: detected capacity change from 0 to 32768
[ 88.636180][ T5830] =======================================================
[ 88.636180][ T5830] WARNING: The mand mount option has been deprecated and
[ 88.636180][ T5830] and is ignored by this kernel. Remove the mand
[ 88.636180][ T5830] option from the mount to silence this warning.
[ 88.636180][ T5830] =======================================================
[pid 5830] mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,nouser_xattr,coherency=full,data=writeback,localalloc=00000000000000000001,acl,no"...) = 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)
[pid 5830] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid 5830] mkdir("./bus", 000) = 0
[pid 5830] mkdirat(AT_FDCWD, "./file1", 000) = 0
[ 88.725765][ T5830] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
[ 88.773427][ T5830] overlayfs: upper fs does not support tmpfile.
[ 88.782165][ T5830] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 88.789730][ T5830]
[ 88.792064][ T5830] ======================================================
[ 88.799095][ T5830] WARNING: possible circular locking dependency detected
[ 88.806207][ T5830] 6.15.0-syzkaller-12141-gec7714e49479 #0 Not tainted
[ 88.812965][ T5830] ------------------------------------------------------
[ 88.819976][ T5830] syz-executor359/5830 is trying to acquire lock:
[ 88.826410][ T5830] ffff8880734d5100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 88.839751][ T5830]
[ 88.839751][ T5830] but task is already holding lock:
[ 88.847107][ T5830] ffff888076d01538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[ 88.856583][ T5830]
[ 88.856583][ T5830] which lock already depends on the new lock.
[ 88.856583][ T5830]
[ 88.866979][ T5830]
[ 88.866979][ T5830] the existing dependency chain (in reverse order) is:
[ 88.875984][ T5830]
[ 88.875984][ T5830] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}:
[ 88.883802][ T5830] lock_acquire+0x120/0x360
[ 88.888835][ T5830] down_write+0x96/0x1f0
[ 88.893616][ T5830] ocfs2_xattr_set_handle+0x3b0/0x7a0
[ 88.899521][ T5830] ocfs2_init_security_set+0xbd/0xe0
[ 88.905322][ T5830] ocfs2_mknod+0x137f/0x2050
[ 88.910433][ T5830] ocfs2_mkdir+0x191/0x440
[ 88.915381][ T5830] vfs_mkdir+0x303/0x510
[ 88.920147][ T5830] do_mkdirat+0x247/0x590
[ 88.925005][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 88.930308][ T5830] do_syscall_64+0xfa/0x3b0
[ 88.935340][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 88.941757][ T5830]
[ 88.941757][ T5830] -> #3 (jbd2_handle){.+.+}-{0:0}:
[ 88.949152][ T5830] lock_acquire+0x120/0x360
[ 88.954190][ T5830] start_this_handle+0x1fa7/0x21c0
[ 88.959828][ T5830] jbd2__journal_start+0x2c1/0x5b0
[ 88.965464][ T5830] jbd2_journal_start+0x2a/0x40
[ 88.970835][ T5830] ocfs2_start_trans+0x376/0x6d0
[ 88.976307][ T5830] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 88.982733][ T5830] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 88.989615][ T5830] ocfs2_mknod+0xe08/0x2050
[ 88.994649][ T5830] ocfs2_mkdir+0x191/0x440
[ 88.999599][ T5830] vfs_mkdir+0x303/0x510
[ 89.004376][ T5830] do_mkdirat+0x247/0x590
[ 89.009278][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 89.014582][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.019640][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.026072][ T5830]
[ 89.026072][ T5830] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
[ 89.034616][ T5830] lock_acquire+0x120/0x360
[ 89.039655][ T5830] down_read+0x46/0x2e0
[ 89.044347][ T5830] ocfs2_start_trans+0x36a/0x6d0
[ 89.049993][ T5830] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 89.056426][ T5830] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 89.063920][ T5830] ocfs2_mknod+0xe08/0x2050
[ 89.068959][ T5830] ocfs2_mkdir+0x191/0x440
[ 89.073907][ T5830] vfs_mkdir+0x303/0x510
[ 89.078768][ T5830] do_mkdirat+0x247/0x590
[ 89.083632][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 89.088926][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.093967][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.100393][ T5830]
[ 89.100393][ T5830] -> #1 (sb_internal#2){.+.+}-{0:0}:
[ 89.107883][ T5830] lock_acquire+0x120/0x360
[ 89.112926][ T5830] ocfs2_start_trans+0x26b/0x6d0
[ 89.118394][ T5830] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 89.124809][ T5830] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 89.131746][ T5830] ocfs2_mknod+0xe08/0x2050
[ 89.136775][ T5830] ocfs2_mkdir+0x191/0x440
[ 89.141739][ T5830] vfs_mkdir+0x303/0x510
[ 89.146523][ T5830] do_mkdirat+0x247/0x590
[ 89.151379][ T5830] __x64_sys_mkdirat+0x87/0xa0
[ 89.156668][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.161725][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.168140][ T5830]
[ 89.168140][ T5830] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}:
[ 89.178667][ T5830] validate_chain+0xb9b/0x2140
[ 89.183973][ T5830] __lock_acquire+0xab9/0xd20
[ 89.189178][ T5830] lock_acquire+0x120/0x360
[ 89.194211][ T5830] down_write+0x96/0x1f0
[ 89.198988][ T5830] ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 89.205416][ T5830] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0
[ 89.212285][ T5830] ocfs2_init_xattr_set_ctxt+0x376/0x700
[ 89.218467][ T5830] ocfs2_xattr_set+0xb70/0x11f0
[ 89.223838][ T5830] __vfs_setxattr+0x439/0x480
[ 89.229043][ T5830] __vfs_setxattr_noperm+0x12d/0x660
[ 89.234863][ T5830] vfs_setxattr+0x16b/0x2f0
[ 89.239906][ T5830] ovl_get_workdir+0xbb7/0x1730
[ 89.245294][ T5830] ovl_fill_super+0x1386/0x35d0
[ 89.250678][ T5830] get_tree_nodev+0xb8/0x150
[ 89.255798][ T5830] vfs_get_tree+0x8f/0x2b0
[ 89.260773][ T5830] do_new_mount+0x24a/0xa40
[ 89.265802][ T5830] __se_sys_mount+0x317/0x410
[ 89.271014][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.276054][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.282480][ T5830]
[ 89.282480][ T5830] other info that might help us debug this:
[ 89.282480][ T5830]
[ 89.292714][ T5830] Chain exists of:
[ 89.292714][ T5830] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> jbd2_handle --> &oi->ip_xattr_sem
[ 89.292714][ T5830]
[ 89.308489][ T5830] Possible unsafe locking scenario:
[ 89.308489][ T5830]
[ 89.315935][ T5830] CPU0 CPU1
[ 89.321299][ T5830] ---- ----
[ 89.326661][ T5830] lock(&oi->ip_xattr_sem);
[ 89.331256][ T5830] lock(jbd2_handle);
[ 89.337857][ T5830] lock(&oi->ip_xattr_sem);
[ 89.344976][ T5830] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);
[ 89.352446][ T5830]
[ 89.352446][ T5830] *** DEADLOCK ***
[ 89.352446][ T5830]
[ 89.360606][ T5830] 4 locks held by syz-executor359/5830:
[ 89.366154][ T5830] #0: ffff888079a3a0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970
[ 89.376276][ T5830] #1: ffff888032ece428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
[ 89.385429][ T5830] #2: ffff888076d01800 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0
[ 89.395900][ T5830] #3: ffff888076d01538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[ 89.405837][ T5830]
[ 89.405837][ T5830] stack backtrace:
[ 89.411735][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: syz-executor359 Not tainted 6.15.0-syzkaller-12141-gec7714e49479 #0 PREEMPT(full)
[ 89.411754][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 89.411766][ T5830] Call Trace:
[ 89.411776][ T5830]
[ 89.411783][ T5830] dump_stack_lvl+0x189/0x250
[ 89.411812][ T5830] ? __pfx_dump_stack_lvl+0x10/0x10
[ 89.411834][ T5830] ? __pfx__printk+0x10/0x10
[ 89.411850][ T5830] ? print_lock_name+0xde/0x100
[ 89.411874][ T5830] print_circular_bug+0x2ee/0x310
[ 89.411891][ T5830] check_noncircular+0x134/0x160
[ 89.411918][ T5830] validate_chain+0xb9b/0x2140
[ 89.411942][ T5830] ? __mutex_unlock_slowpath+0x1cd/0x700
[ 89.411966][ T5830] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 89.411990][ T5830] __lock_acquire+0xab9/0xd20
[ 89.412012][ T5830] ? ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 89.412034][ T5830] lock_acquire+0x120/0x360
[ 89.412053][ T5830] ? ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 89.412076][ T5830] ? __kasan_check_byte+0x12/0x40
[ 89.412095][ T5830] ? unwind_next_frame+0xa5/0x2390
[ 89.412119][ T5830] down_write+0x96/0x1f0
[ 89.412140][ T5830] ? ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 89.412162][ T5830] ? __pfx_down_write+0x10/0x10
[ 89.412185][ T5830] ? lock_release+0x4b/0x3e0
[ 89.412206][ T5830] ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 89.412230][ T5830] ? is_bpf_text_address+0x26/0x2b0
[ 89.412254][ T5830] ? kernel_text_address+0xa5/0xe0
[ 89.412272][ T5830] ? __kernel_text_address+0xd/0x40
[ 89.412290][ T5830] ? unwind_get_return_address+0x4d/0x90
[ 89.412311][ T5830] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 89.412327][ T5830] ? arch_stack_walk+0xfc/0x150
[ 89.412354][ T5830] ? stack_trace_save+0x9c/0xe0
[ 89.412369][ T5830] ? __pfx_ocfs2_reserve_suballoc_bits+0x10/0x10
[ 89.412392][ T5830] ? check_path+0x21/0x40
[ 89.412414][ T5830] ? check_noncircular+0xe0/0x160
[ 89.412439][ T5830] ? lockdep_unlock+0x89/0x120
[ 89.412462][ T5830] ? validate_chain+0x897/0x2140
[ 89.412485][ T5830] ? get_tree_nodev+0xb8/0x150
[ 89.412509][ T5830] ? __lock_acquire+0xab9/0xd20
[ 89.412536][ T5830] ? do_raw_spin_unlock+0x122/0x240
[ 89.412553][ T5830] ? _raw_spin_unlock+0x28/0x50
[ 89.412569][ T5830] ? ocfs2_alloc_should_use_local+0x152/0x310
[ 89.412587][ T5830] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0
[ 89.412611][ T5830] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0
[ 89.412636][ T5830] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10
[ 89.412663][ T5830] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10
[ 89.412682][ T5830] ? __lock_acquire+0xab9/0xd20
[ 89.412706][ T5830] ocfs2_init_xattr_set_ctxt+0x376/0x700
[ 89.412723][ T5830] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10
[ 89.412740][ T5830] ? ocfs2_xattr_set+0xb36/0x11f0
[ 89.412756][ T5830] ? up_write+0x1c4/0x420
[ 89.412768][ T5830] ? ocfs2_xattr_set+0x334/0x11f0
[ 89.412783][ T5830] ocfs2_xattr_set+0xb70/0x11f0
[ 89.412806][ T5830] ? __pfx_ocfs2_xattr_set+0x10/0x10
[ 89.412823][ T5830] ? smack_log+0xef/0x3f0
[ 89.412840][ T5830] ? __pfx___console_unlock+0x10/0x10
[ 89.412854][ T5830] ? smk_access+0x14c/0x4e0
[ 89.412870][ T5830] ? smk_tskacc+0x2fc/0x370
[ 89.412887][ T5830] ? posix_xattr_acl+0x93/0xc0
[ 89.412910][ T5830] ? evm_protect_xattr+0x4d4/0xa90
[ 89.412934][ T5830] ? __pfx_evm_protect_xattr+0x10/0x10
[ 89.412956][ T5830] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10
[ 89.412971][ T5830] __vfs_setxattr+0x439/0x480
[ 89.412996][ T5830] __vfs_setxattr_noperm+0x12d/0x660
[ 89.413018][ T5830] vfs_setxattr+0x16b/0x2f0
[ 89.413040][ T5830] ? __pfx_vfs_setxattr+0x10/0x10
[ 89.413061][ T5830] ? up_write+0x1c4/0x420
[ 89.413076][ T5830] ovl_get_workdir+0xbb7/0x1730
[ 89.413103][ T5830] ? __pfx_ovl_get_workdir+0x10/0x10
[ 89.413136][ T5830] ? do_raw_spin_unlock+0x122/0x240
[ 89.413183][ T5830] ? _raw_spin_unlock+0x28/0x50
[ 89.413200][ T5830] ? ovl_inuse_trylock+0xae/0xf0
[ 89.413224][ T5830] ovl_fill_super+0x1386/0x35d0
[ 89.413251][ T5830] ? rcu_is_watching+0x15/0xb0
[ 89.413278][ T5830] ? shrinker_register+0x124/0x230
[ 89.413305][ T5830] ? __pfx_ovl_fill_super+0x10/0x10
[ 89.413328][ T5830] ? __pfx___mutex_lock+0x10/0x10
[ 89.413349][ T5830] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 89.413372][ T5830] ? __raw_spin_lock_init+0x45/0x100
[ 89.413394][ T5830] ? sget_fc+0x962/0xa40
[ 89.413410][ T5830] ? __pfx_set_anon_super_fc+0x10/0x10
[ 89.413426][ T5830] ? __pfx_ovl_fill_super+0x10/0x10
[ 89.413455][ T5830] get_tree_nodev+0xb8/0x150
[ 89.413473][ T5830] vfs_get_tree+0x8f/0x2b0
[ 89.413493][ T5830] do_new_mount+0x24a/0xa40
[ 89.413517][ T5830] __se_sys_mount+0x317/0x410
[ 89.413541][ T5830] ? __pfx___se_sys_mount+0x10/0x10
[ 89.413562][ T5830] ? rcu_is_watching+0x15/0xb0
[ 89.413586][ T5830] ? __x64_sys_mount+0x20/0xc0
[ 89.413608][ T5830] do_syscall_64+0xfa/0x3b0
[ 89.413629][ T5830] ? lockdep_hardirqs_on+0x9c/0x150
[ 89.413648][ T5830] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.413663][ T5830] ? clear_bhb_loop+0x60/0xb0
[ 89.413680][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.413696][ T5830] RIP: 0033:0x7f4208411bd9
[ 89.413718][ 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
[ 89.413735][ T5830] RSP: 002b:00007fff84ca9698 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 89.413751][ T5830] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f4208411bd9
[ 89.413763][ T5830] RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
[ 89.413773][ T5830] RBP: 00007f42084895f0 R08: 0000200000000100 R09: 0000555556b7e4c0
[ 89.413784][ T5830] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff84ca96c0
[ 89.413794][ T5830] R13: 00007fff84ca98e8 R14: 431bde82d7b634db R15: 00007f420845a03b
[ 89.413812][ 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=4 /* 0.04 s */, si_stime=22 /* 0.22 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=0x555556b7d650) = 5838
[pid 5838] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[ 89.990632][ T5830] overlayfs: upper fs missing required features.
[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(0x7f41ffe00000, 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) = 0
[pid 5838] mkdir("./bus", 000) = 0
[pid 5838] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 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 5839 attached
, child_tidptr=0x555556b7d650) = 5839
[pid 5839] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[ 90.197026][ T5838] overlayfs: workdir and upperdir must reside under the same mount
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5839] mkdirat(AT_FDCWD, "./file1", 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=4 /* 0.04 s */, si_stime=12 /* 0.12 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 90.390701][ T5839] overlayfs: workdir and upperdir must reside under the same mount
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=0x555556b7d650) = 5840
[pid 5840] set_robust_list(0x555556b7d660, 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
[pid 5840] write(1, "executing program\n", 18executing program
) = 18
[pid 5840] memfd_create("syzkaller", 0) = 3
[pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5840] mkdirat(AT_FDCWD, "./file1", 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=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 90.702992][ T5840] 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 5841 attached
, child_tidptr=0x555556b7d650) = 5841
[pid 5841] set_robust_list(0x555556b7d660, 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(3) = 0
[pid 5841] write(1, "executing program\n", 18executing program
) = 18
[pid 5841] memfd_create("syzkaller", 0) = 3
[pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[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(0x7f41ffe00000, 138412032) = 0
[pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5841] close(3) = 0
[pid 5841] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5841] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5841] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5841] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=4 /* 0.04 s */, si_stime=11 /* 0.11 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 91.015399][ T5841] 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 5842 attached
, child_tidptr=0x555556b7d650) = 5842
[pid 5842] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5842] mkdirat(AT_FDCWD, "./file1", 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=5 /* 0.05 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 5843 attached
[pid 5843] set_robust_list(0x555556b7d660, 24
[pid 5828] <... clone resumed>, child_tidptr=0x555556b7d650) = 5843
[pid 5843] <... set_robust_list resumed>) = 0
[pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 91.342077][ T5842] overlayfs: workdir and upperdir must reside under the same mount
[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
executing program
[pid 5843] close(3) = 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5843] mkdirat(AT_FDCWD, "./file1", 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 */} ---
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=0x555556b7d650) = 5844
[pid 5844] set_robust_list(0x555556b7d660, 24) = 0
[pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 91.640616][ T5843] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[ 91.784895][ T980] cfg80211: failed to load regulatory.db
[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(0x7f41ffe00000, 138412032) = 0
[pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5844] close(3) = 0
[pid 5844] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5844] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5844] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5844] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=5 /* 0.05 s */, si_stime=12 /* 0.12 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=0x555556b7d650) = 5846
[pid 5846] set_robust_list(0x555556b7d660, 24) = 0
[ 91.966530][ T5844] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5846] mkdirat(AT_FDCWD, "./file1", 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=4 /* 0.04 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 5847 attached
, child_tidptr=0x555556b7d650) = 5847
[pid 5847] set_robust_list(0x555556b7d660, 24) = 0
[ 92.280063][ T5846] overlayfs: workdir and upperdir must reside under the same mount
[pid 5847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5847] setpgid(0, 0) = 0
[pid 5847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5847] write(3, "1000", 4) = 4
[pid 5847] close(3) = 0
[pid 5847] write(1, "executing program\n", 18executing program
) = 18
[pid 5847] memfd_create("syzkaller", 0) = 3
[pid 5847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[pid 5847] 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 5847] munmap(0x7f41ffe00000, 138412032) = 0
[pid 5847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5847] close(3) = 0
[pid 5847] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5847] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5847] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5847] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5847] exit_group(0) = ?
[pid 5847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5847, si_uid=0, si_status=0, si_utime=4 /* 0.04 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 5848 attached
, child_tidptr=0x555556b7d650) = 5848
[pid 5848] set_robust_list(0x555556b7d660, 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
executing program
[pid 5848] write(1, "executing program\n", 18) = 18
[pid 5848] memfd_create("syzkaller", 0) = 3
[ 92.592893][ T5847] overlayfs: workdir and upperdir must reside under the same mount
[pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[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(0x7f41ffe00000, 138412032) = 0
[pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5848] close(3) = 0
[pid 5848] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5848] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5848] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5848] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=3 /* 0.03 s */, si_stime=12 /* 0.12 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 5849 attached
, child_tidptr=0x555556b7d650) = 5849
[pid 5849] set_robust_list(0x555556b7d660, 24) = 0
[ 92.860001][ T5848] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5849] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 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 5850 attached
, child_tidptr=0x555556b7d650) = 5850
[pid 5850] set_robust_list(0x555556b7d660, 24) = 0
[pid 5850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 93.183664][ T5849] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 138412032) = 0
[pid 5850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5850] close(3) = 0
[pid 5850] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5850] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5850] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5850] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=4 /* 0.04 s */, si_stime=12 /* 0.12 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=0x555556b7d650) = 5851
[pid 5851] set_robust_list(0x555556b7d660, 24) = 0
[pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 93.524594][ T5850] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5851] mkdirat(AT_FDCWD, "./file1", 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=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 5852 attached
, child_tidptr=0x555556b7d650) = 5852
[pid 5852] set_robust_list(0x555556b7d660, 24) = 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) = 0x7f41ffe00000
[ 93.877060][ T5851] overlayfs: workdir and upperdir must reside under the same mount
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5852] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 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)
[ 94.145310][ 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=0x555556b7d650) = 5853
[pid 5853] set_robust_list(0x555556b7d660, 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
executing program
[pid 5853] write(1, "executing program\n", 18) = 18
[pid 5853] memfd_create("syzkaller", 0) = 3
[pid 5853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5853] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 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 5854 attached
[pid 5854] set_robust_list(0x555556b7d660, 24
[pid 5828] <... clone resumed>, child_tidptr=0x555556b7d650) = 5854
[pid 5854] <... set_robust_list resumed>) = 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
[ 94.476233][ T5853] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5854] mkdirat(AT_FDCWD, "./file1", 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=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 5855 attached
, child_tidptr=0x555556b7d650) = 5855
[pid 5855] set_robust_list(0x555556b7d660, 24) = 0
[pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5855] setpgid(0, 0) = 0
[ 94.803987][ T5854] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5855] mkdirat(AT_FDCWD, "./file1", 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)
[ 95.122772][ T5855] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b7d650) = 5857
./strace-static-x86_64: Process 5857 attached
[pid 5857] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5857] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 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 5858 attached
, child_tidptr=0x555556b7d650) = 5858
[ 95.498471][ T5857] overlayfs: workdir and upperdir must reside under the same mount
[pid 5858] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5858] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 95.820263][ T5858] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b7d650) = 5859
./strace-static-x86_64: Process 5859 attached
[pid 5859] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5859] mkdirat(AT_FDCWD, "./file1", 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=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)
[ 96.207610][ T5859] 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 5860 attached
, child_tidptr=0x555556b7d650) = 5860
[pid 5860] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5860] mkdirat(AT_FDCWD, "./file1", 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=4 /* 0.04 s */, si_stime=12 /* 0.12 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=0x555556b7d650) = 5861
[ 96.542455][ T5860] overlayfs: workdir and upperdir must reside under the same mount
[pid 5861] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5861] mkdirat(AT_FDCWD, "./file1", 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=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./strace-static-x86_64: Process 5862 attached
[pid 5862] set_robust_list(0x555556b7d660, 24
[pid 5828] <... clone resumed>, child_tidptr=0x555556b7d650) = 5862
[pid 5862] <... set_robust_list resumed>) = 0
[pid 5862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5862] setpgid(0, 0) = 0
[ 96.806666][ T5861] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5862] mkdirat(AT_FDCWD, "./file1", 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=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)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5863 attached
, child_tidptr=0x555556b7d650) = 5863
[ 97.116516][ T5862] overlayfs: workdir and upperdir must reside under the same mount
[pid 5863] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5863] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 s */, si_stime=12 /* 0.12 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 5864 attached
, child_tidptr=0x555556b7d650) = 5864
[ 97.432989][ T5863] overlayfs: workdir and upperdir must reside under the same mount
[pid 5864] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5864] mkdirat(AT_FDCWD, "./file1", 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=4 /* 0.04 s */, si_stime=10 /* 0.10 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 97.755504][ T5864] 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 5865 attached
, child_tidptr=0x555556b7d650) = 5865
[pid 5865] set_robust_list(0x555556b7d660, 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
[pid 5865] close(3) = 0
executing program
[pid 5865] write(1, "executing program\n", 18) = 18
[pid 5865] memfd_create("syzkaller", 0) = 3
[pid 5865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5865] mkdirat(AT_FDCWD, "./file1", 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=3 /* 0.03 s */, si_stime=12 /* 0.12 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 5866 attached
, child_tidptr=0x555556b7d650) = 5866
[ 98.101900][ T5865] overlayfs: workdir and upperdir must reside under the same mount
[pid 5866] set_robust_list(0x555556b7d660, 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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5866] mkdirat(AT_FDCWD, "./file1", 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=11 /* 0.11 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 5868 attached
, child_tidptr=0x555556b7d650) = 5868
[pid 5868] set_robust_list(0x555556b7d660, 24) = 0
[ 98.396529][ T5866] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f41ffe00000
[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(0x7f41ffe00000, 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] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5868] mkdirat(AT_FDCWD, "./file1", 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=4 /* 0.04 s */, si_stime=10 /* 0.10 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 5869 attached
, child_tidptr=0x555556b7d650) = 5869
[pid 5869] set_robust_list(0x555556b7d660, 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(3executing program
) = 0
[pid 5869] write(1, "executing program\n", 18) = 18
[pid 5869] memfd_create("syzkaller", 0) = 3
[pid 5869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f41ffe00000
[ 98.715590][ T5868] overlayfs: workdir and upperdir must reside under the same mount