./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3481857821
<...>
Warning: Permanently added '10.128.0.118' (ED25519) to the list of known hosts.
execve("./syz-executor3481857821", ["./syz-executor3481857821"], 0x7ffd10006fb0 /* 10 vars */) = 0
brk(NULL) = 0x555578238000
brk(0x555578238e00) = 0x555578238e00
arch_prctl(ARCH_SET_FS, 0x555578238480) = 0
set_tid_address(0x555578238750) = 5831
set_robust_list(0x555578238760, 24) = 0
rseq(0x555578238da0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3481857821", 4096) = 28
getrandom("\x9c\x6e\xe7\x93\x1d\xd0\x47\xeb", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555578238e00
brk(0x555578259e00) = 0x555578259e00
brk(0x55557825a000) = 0x55557825a000
mprotect(0x7fbcc010e000, 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
rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x7fbcc0060a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fbcc0069c30}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7fbcc0060a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fbcc0069c30}, NULL, 8) = 0
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 5833 attached
, child_tidptr=0x555578238750) = 5833
[pid 5833] set_robust_list(0x555578238760, 24) = 0
[pid 5833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5833] setpgid(0, 0) = 0
[pid 5833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5833] write(3, "1000", 4) = 4
[pid 5833] close(3) = 0
[pid 5833] write(1, "executing program\n", 18executing program
) = 18
[pid 5833] memfd_create("syzkaller", 0) = 3
[pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[pid 5833] 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 5833] munmap(0x7fbcb7c00000, 138412032) = 0
[pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5833] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5833] close(3) = 0
[pid 5833] close(4) = 0
[pid 5833] mkdir("./file3", 0777) = 0
[ 89.622553][ T5833] loop0: detected capacity change from 0 to 32768
[ 89.647228][ T5833] =======================================================
[ 89.647228][ T5833] WARNING: The mand mount option has been deprecated and
[ 89.647228][ T5833] and is ignored by this kernel. Remove the mand
[pid 5833] mount("/dev/loop0", "./file3", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "nouser_xattr,heartbeat=none,heartbeat=none,coherency=full,coherency=full,resv_level=0000000000000000"...) = 0
[pid 5833] openat(AT_FDCWD, "./file3", O_RDONLY|O_DIRECTORY) = 3
[pid 5833] chdir("./file3") = 0
[pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 89.647228][ T5833] option from the mount to silence this warning.
[ 89.647228][ T5833] =======================================================
[ 89.703999][ T5833] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
[pid 5833] mkdir("./file0", 0777) = 0
[pid 5833] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5833] mkdir("./file1", 0777) = 0
[pid 5833] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[ 89.767485][ T5833]
[ 89.769838][ T5833] ======================================================
[ 89.776836][ T5833] WARNING: possible circular locking dependency detected
[ 89.783836][ T5833] 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 Not tainted
[ 89.790578][ T5833] ------------------------------------------------------
[ 89.797572][ T5833] syz-executor348/5833 is trying to acquire lock:
[ 89.803966][ T5833] ffff88807a514618 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0x969/0x1b40
[ 89.813179][ T5833]
[ 89.813179][ T5833] but task is already holding lock:
[ 89.820532][ T5833] ffff88807820a2e0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x95a/0x1b40
[ 89.829852][ T5833]
[ 89.829852][ T5833] which lock already depends on the new lock.
[ 89.829852][ T5833]
[ 89.842926][ T5833]
[ 89.842926][ T5833] the existing dependency chain (in reverse order) is:
[ 89.852068][ T5833]
[ 89.852068][ T5833] -> #4 (&oi->ip_alloc_sem){+.+.}-{4:4}:
[ 89.859895][ T5833] lock_acquire+0x120/0x360
[ 89.864916][ T5833] down_write+0x96/0x1f0
[ 89.869688][ T5833] ocfs2_try_remove_refcount_tree+0xb6/0x320
[ 89.876179][ T5833] ocfs2_xattr_set+0x595/0x11f0
[ 89.881559][ T5833] ocfs2_set_acl+0x701/0x7b0
[ 89.886676][ T5833] ocfs2_iop_set_acl+0x1aa/0x2a0
[ 89.892122][ T5833] vfs_remove_acl+0x48c/0x700
[ 89.897310][ T5833] ovl_workdir_create+0x552/0x860
[ 89.902842][ T5833] ovl_get_workdir+0x32c/0x1730
[ 89.908223][ T5833] ovl_fill_super+0x1386/0x35d0
[ 89.913582][ T5833] get_tree_nodev+0xbb/0x150
[ 89.918687][ T5833] vfs_get_tree+0x92/0x2b0
[ 89.923616][ T5833] do_new_mount+0x24a/0xa40
[ 89.928648][ T5833] __se_sys_mount+0x317/0x410
[ 89.933831][ T5833] do_syscall_64+0xfa/0x3b0
[ 89.938846][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.945250][ T5833]
[ 89.945250][ T5833] -> #3 (&oi->ip_xattr_sem){++++}-{4:4}:
[ 89.953066][ T5833] lock_acquire+0x120/0x360
[ 89.958098][ T5833] down_read+0x46/0x2e0
[ 89.962771][ T5833] ocfs2_init_acl+0x2f9/0x720
[ 89.967956][ T5833] ocfs2_mknod+0x1321/0x2050
[ 89.973051][ T5833] ocfs2_mkdir+0x191/0x440
[ 89.977970][ T5833] vfs_mkdir+0x306/0x510
[ 89.982724][ T5833] do_mkdirat+0x247/0x590
[ 89.987565][ T5833] __x64_sys_mkdir+0x6c/0x80
[ 89.992684][ T5833] do_syscall_64+0xfa/0x3b0
[ 89.997701][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.004101][ T5833]
[ 90.004101][ T5833] -> #2 (jbd2_handle){.+.+}-{0:0}:
[ 90.011397][ T5833] lock_acquire+0x120/0x360
[ 90.016409][ T5833] start_this_handle+0x1fa7/0x21c0
[ 90.022030][ T5833] jbd2__journal_start+0x2c1/0x5b0
[ 90.027649][ T5833] jbd2_journal_start+0x2a/0x40
[ 90.033007][ T5833] ocfs2_start_trans+0x376/0x6d0
[ 90.038454][ T5833] ocfs2_mknod+0xe93/0x2050
[ 90.043463][ T5833] ocfs2_mkdir+0x191/0x440
[ 90.048388][ T5833] vfs_mkdir+0x306/0x510
[ 90.053146][ T5833] do_mkdirat+0x247/0x590
[ 90.057989][ T5833] __x64_sys_mkdir+0x6c/0x80
[ 90.063095][ T5833] do_syscall_64+0xfa/0x3b0
[ 90.068116][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.074522][ T5833]
[ 90.074522][ T5833] -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}:
[ 90.083035][ T5833] lock_acquire+0x120/0x360
[ 90.088060][ T5833] down_read+0x46/0x2e0
[ 90.092729][ T5833] ocfs2_start_trans+0x36a/0x6d0
[ 90.098173][ T5833] ocfs2_mknod+0xe93/0x2050
[ 90.103178][ T5833] ocfs2_mkdir+0x191/0x440
[ 90.108097][ T5833] vfs_mkdir+0x306/0x510
[ 90.112850][ T5833] do_mkdirat+0x247/0x590
[ 90.117693][ T5833] __x64_sys_mkdir+0x6c/0x80
[ 90.122796][ T5833] do_syscall_64+0xfa/0x3b0
[ 90.127813][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.134211][ T5833]
[ 90.134211][ T5833] -> #0 (sb_internal#2){.+.+}-{0:0}:
[ 90.141687][ T5833] validate_chain+0xb9b/0x2140
[ 90.146965][ T5833] __lock_acquire+0xab9/0xd20
[ 90.152167][ T5833] lock_acquire+0x120/0x360
[ 90.157178][ T5833] ocfs2_start_trans+0x26b/0x6d0
[ 90.162625][ T5833] ocfs2_setattr+0x969/0x1b40
[ 90.167832][ T5833] notify_change+0xb36/0xe40
[ 90.172942][ T5833] ovl_workdir_create+0x6d5/0x860
[ 90.178494][ T5833] ovl_get_workdir+0x32c/0x1730
[ 90.183940][ T5833] ovl_fill_super+0x1386/0x35d0
[ 90.189301][ T5833] get_tree_nodev+0xbb/0x150
[ 90.194402][ T5833] vfs_get_tree+0x92/0x2b0
[ 90.199330][ T5833] do_new_mount+0x24a/0xa40
[ 90.204358][ T5833] __se_sys_mount+0x317/0x410
[ 90.209546][ T5833] do_syscall_64+0xfa/0x3b0
[ 90.214563][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.220977][ T5833]
[ 90.220977][ T5833] other info that might help us debug this:
[ 90.220977][ T5833]
[ 90.231205][ T5833] Chain exists of:
[ 90.231205][ T5833] sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem
[ 90.231205][ T5833]
[ 90.244426][ T5833] Possible unsafe locking scenario:
[ 90.244426][ T5833]
[ 90.251854][ T5833] CPU0 CPU1
[ 90.257199][ T5833] ---- ----
[ 90.262545][ T5833] lock(&oi->ip_alloc_sem);
[ 90.267127][ T5833] lock(&oi->ip_xattr_sem);
[ 90.274241][ T5833] lock(&oi->ip_alloc_sem);
[ 90.281360][ T5833] rlock(sb_internal#2);
[ 90.285713][ T5833]
[ 90.285713][ T5833] *** DEADLOCK ***
[ 90.285713][ T5833]
[ 90.293836][ T5833] 5 locks held by syz-executor348/5833:
[ 90.299381][ T5833] #0: ffff88807c0740e0 (&type->s_umount_key#42/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970
[ 90.309974][ T5833] #1: ffff88807a514428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
[ 90.319137][ T5833] #2: ffff888078209800 (&sb->s_type->i_mutex_key#15/1){+.+.}-{4:4}, at: ovl_workdir_create+0x14c/0x860
[ 90.330329][ T5833] #3: ffff88807820a640 (&sb->s_type->i_mutex_key#17){+.+.}-{4:4}, at: ovl_workdir_create+0x65a/0x860
[ 90.341332][ T5833] #4: ffff88807820a2e0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x95a/0x1b40
[ 90.351120][ T5833]
[ 90.351120][ T5833] stack backtrace:
[ 90.356996][ T5833] CPU: 0 UID: 0 PID: 5833 Comm: syz-executor348 Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full)
[ 90.357018][ T5833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 90.357029][ T5833] Call Trace:
[ 90.357038][ T5833]
[ 90.357046][ T5833] dump_stack_lvl+0x189/0x250
[ 90.357078][ T5833] ? __pfx_dump_stack_lvl+0x10/0x10
[ 90.357113][ T5833] ? __pfx__printk+0x10/0x10
[ 90.357132][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357153][ T5833] ? print_lock_name+0xde/0x100
[ 90.357173][ T5833] print_circular_bug+0x2ee/0x310
[ 90.357201][ T5833] check_noncircular+0x134/0x160
[ 90.357229][ T5833] validate_chain+0xb9b/0x2140
[ 90.357253][ T5833] ? lockdep_unlock+0x89/0x120
[ 90.357278][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357300][ T5833] __lock_acquire+0xab9/0xd20
[ 90.357323][ T5833] ? ocfs2_setattr+0x969/0x1b40
[ 90.357349][ T5833] lock_acquire+0x120/0x360
[ 90.357369][ T5833] ? ocfs2_setattr+0x969/0x1b40
[ 90.357394][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357416][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357436][ T5833] ? do_raw_spin_unlock+0x122/0x240
[ 90.357453][ T5833] ocfs2_start_trans+0x26b/0x6d0
[ 90.357473][ T5833] ? ocfs2_setattr+0x969/0x1b40
[ 90.357500][ T5833] ? __pfx_ocfs2_start_trans+0x10/0x10
[ 90.357519][ T5833] ? setattr_prepare+0x1e7/0xac0
[ 90.357547][ T5833] ocfs2_setattr+0x969/0x1b40
[ 90.357577][ T5833] ? __pfx_ocfs2_setattr+0x10/0x10
[ 90.357602][ T5833] ? ktime_get_coarse_real_ts64_mg+0x52/0x1e0
[ 90.357620][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357640][ T5833] ? seqcount_lockdep_reader_access+0x175/0x1c0
[ 90.357669][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357691][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357714][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357734][ T5833] ? ktime_get_coarse_real_ts64_mg+0x1be/0x1e0
[ 90.357754][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357774][ T5833] ? current_time+0x222/0x370
[ 90.357792][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357812][ T5833] ? evm_inode_setattr+0x1bd/0x7d0
[ 90.357838][ T5833] ? __pfx_current_time+0x10/0x10
[ 90.357865][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.357889][ T5833] ? try_break_deleg+0x79/0x130
[ 90.357911][ T5833] ? __pfx_ocfs2_setattr+0x10/0x10
[ 90.357937][ T5833] notify_change+0xb36/0xe40
[ 90.357965][ T5833] ovl_workdir_create+0x6d5/0x860
[ 90.357991][ T5833] ? __pfx_ovl_workdir_create+0x10/0x10
[ 90.358016][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358036][ T5833] ? mnt_get_write_access+0x223/0x2a0
[ 90.358059][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358081][ T5833] ovl_get_workdir+0x32c/0x1730
[ 90.358115][ T5833] ? __pfx_ovl_get_workdir+0x10/0x10
[ 90.358136][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358156][ T5833] ? __lock_acquire+0xab9/0xd20
[ 90.358179][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358199][ T5833] ? do_raw_spin_lock+0x121/0x290
[ 90.358228][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358250][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358270][ T5833] ? do_raw_spin_unlock+0x122/0x240
[ 90.358286][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358306][ T5833] ? _raw_spin_unlock+0x28/0x50
[ 90.358325][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358345][ T5833] ? ovl_inuse_trylock+0xae/0xf0
[ 90.358366][ T5833] ovl_fill_super+0x1386/0x35d0
[ 90.358387][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358409][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358429][ T5833] ? rcu_is_watching+0x15/0xb0
[ 90.358454][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358475][ T5833] ? shrinker_register+0x124/0x230
[ 90.358498][ T5833] ? __pfx_ovl_fill_super+0x10/0x10
[ 90.358517][ T5833] ? __pfx___mutex_lock+0x10/0x10
[ 90.358540][ T5833] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 90.358566][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358586][ T5833] ? __raw_spin_lock_init+0x45/0x100
[ 90.358619][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358639][ T5833] ? sget_fc+0x962/0xa40
[ 90.358661][ T5833] ? __pfx_set_anon_super_fc+0x10/0x10
[ 90.358684][ T5833] ? __pfx_ovl_fill_super+0x10/0x10
[ 90.358703][ T5833] get_tree_nodev+0xbb/0x150
[ 90.358728][ T5833] vfs_get_tree+0x92/0x2b0
[ 90.358754][ T5833] do_new_mount+0x24a/0xa40
[ 90.358785][ T5833] __se_sys_mount+0x317/0x410
[ 90.358804][ T5833] ? __pfx___se_sys_mount+0x10/0x10
[ 90.358823][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358843][ T5833] ? __x64_sys_mount+0x20/0xc0
[ 90.358860][ T5833] do_syscall_64+0xfa/0x3b0
[ 90.358884][ T5833] ? lockdep_hardirqs_on+0x9c/0x150
[ 90.358905][ T5833] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.358922][ T5833] ? srso_alias_return_thunk+0x5/0xfbef5
[ 90.358942][ T5833] ? exc_page_fault+0x9f/0xf0
[ 90.358963][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.358980][ T5833] RIP: 0033:0x7fbcc0096f59
[ 90.358997][ T5833] 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
[ 90.359011][ T5833] RSP: 002b:00007ffc4b261048 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 90.359029][ T5833] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbcc0096f59
[ 90.359042][ T5833] RDX: 0000200000000040 RSI: 0000200000000000 RDI: 0000000000000000
[ 90.359054][ T5833] RBP: 0000000000000000 R08: 00002000000002c0 R09: 00007ffc4b261080
[ 90.359066][ T5833] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc4b261080
[ 90.359077][ T5833] R13: 00007ffc4b261308 R14: 431bde82d7b634db R15: 00007fbcc00df03b
[ 90.359104][ T5833]
[ 90.911891][ T5833] overlayfs: upper fs does not support tmpfile.
[pid 5833] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid 5833] exit_group(0) = ?
[pid 5833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5833, si_uid=0, si_status=0, si_utime=0, si_stime=26 /* 0.26 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 5840 attached
, child_tidptr=0x555578238750) = 5840
[pid 5840] set_robust_list(0x555578238760, 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
[pid 5840] memfd_create("syzkaller", 0) = 3
[pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[ 90.918849][ T5833] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 90.926979][ T5833] overlayfs: upper fs missing required features.
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5840] close(3) = 0
[pid 5840] mkdir("./file0", 0777) = 0
[pid 5840] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5840] mkdir("./file1", 0777) = 0
[pid 5840] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[ 91.119700][ T1880] cfg80211: failed to load regulatory.db
[pid 5840] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = 0
[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=0, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5842 attached
, child_tidptr=0x555578238750) = 5842
[pid 5842] set_robust_list(0x555578238760, 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
[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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5842] close(3) = 0
[pid 5842] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5842] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5842] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5842] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5842] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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 */} ---
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=0x555578238750) = 5843
[pid 5843] set_robust_list(0x555578238760, 24) = 0
[pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5843] setpgid(0, 0) = 0
[pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5843] write(3, "1000", 4) = 4
[pid 5843] close(3) = 0
[ 91.500629][ T5842] overlay: filesystem on ./file0 not supported as upperdir
[pid 5843] write(1, "executing program\n", 18executing program
) = 18
[pid 5843] memfd_create("syzkaller", 0) = 3
[pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5843] close(3) = 0
[pid 5843] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5843] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5843] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5843] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5843] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=17 /* 0.17 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=0x555578238750) = 5844
[pid 5844] set_robust_list(0x555578238760, 24) = 0
[pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5844] setpgid(0, 0) = 0
[pid 5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[ 91.792880][ T5843] overlay: filesystem on ./file0 not supported as upperdir
[pid 5844] write(3, "1000", 4) = 4
[pid 5844] close(3) = 0
[pid 5844] write(1, "executing program\n", 18executing program
) = 18
[pid 5844] memfd_create("syzkaller", 0) = 3
[pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5844] close(3) = 0
[pid 5844] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5844] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5844] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5844] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5844] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=16 /* 0.16 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5845 attached
[pid 5845] set_robust_list(0x555578238760, 24
[pid 5831] <... clone resumed>, child_tidptr=0x555578238750) = 5845
[pid 5845] <... set_robust_list resumed>) = 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
[ 92.083138][ T5844] overlay: filesystem on ./file0 not supported as upperdir
[pid 5845] close(3) = 0
executing program
[pid 5845] write(1, "executing program\n", 18) = 18
[pid 5845] memfd_create("syzkaller", 0) = 3
[pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5845] close(3) = 0
[pid 5845] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5845] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5845] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5845] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5845] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5846 attached
, child_tidptr=0x555578238750) = 5846
[pid 5846] set_robust_list(0x555578238760, 24) = 0
[pid 5846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5846] setpgid(0, 0) = 0
[ 92.372185][ T5845] overlay: filesystem on ./file0 not supported as upperdir
[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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5846] close(3) = 0
[pid 5846] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5846] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5846] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5846] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5846] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5847 attached
[pid 5847] set_robust_list(0x555578238760, 24
[pid 5831] <... clone resumed>, child_tidptr=0x555578238750) = 5847
[pid 5847] <... set_robust_list resumed>) = 0
[ 92.661520][ T5846] overlay: filesystem on ./file0 not supported as upperdir
[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
executing program
[pid 5847] write(1, "executing program\n", 18) = 18
[pid 5847] memfd_create("syzkaller", 0) = 3
[pid 5847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5847] close(3) = 0
[pid 5847] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5847] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5847] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5847] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5847] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5848 attached
, child_tidptr=0x555578238750) = 5848
[pid 5848] set_robust_list(0x555578238760, 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
[pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[ 92.963060][ T5847] overlay: filesystem on ./file0 not supported as upperdir
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5848] close(3) = 0
[pid 5848] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5848] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5848] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5848] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5848] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5849 attached
, child_tidptr=0x555578238750) = 5849
[ 93.250682][ T5848] overlay: filesystem on ./file0 not supported as upperdir
[pid 5849] set_robust_list(0x555578238760, 24) = 0
[pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5849] setpgid(0, 0) = 0
[pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5849] write(3, "1000", 4) = 4
[pid 5849] close(3) = 0
executing program
[pid 5849] write(1, "executing program\n", 18) = 18
[pid 5849] memfd_create("syzkaller", 0) = 3
[pid 5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5849] close(3) = 0
[pid 5849] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5849] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5849] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5849] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5849] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555578238750) = 5850
./strace-static-x86_64: Process 5850 attached
[pid 5850] set_robust_list(0x555578238760, 24) = 0
[pid 5850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 93.586956][ T5849] overlay: filesystem on ./file0 not supported as upperdir
[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
[pid 5850] write(1, "executing program\n", 18executing program
) = 18
[pid 5850] memfd_create("syzkaller", 0) = 3
[pid 5850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5850] close(3) = 0
[pid 5850] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5850] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5850] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5850] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5850] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5851 attached
[pid 5851] set_robust_list(0x555578238760, 24
[pid 5831] <... clone resumed>, child_tidptr=0x555578238750) = 5851
[pid 5851] <... set_robust_list resumed>) = 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
[ 93.919129][ T5850] overlay: filesystem on ./file0 not supported as upperdir
[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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5851] close(3) = 0
[pid 5851] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5851] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5851] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5851] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5851] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=3 /* 0.03 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 5852 attached
, child_tidptr=0x555578238750) = 5852
[ 94.223776][ T5851] overlay: filesystem on ./file0 not supported as upperdir
[pid 5852] set_robust_list(0x555578238760, 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
[pid 5852] write(1, "executing program\n", 18executing program
) = 18
[pid 5852] memfd_create("syzkaller", 0) = 3
[pid 5852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5852] close(3) = 0
[pid 5852] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5852] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5852] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5852] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5852] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5854 attached
, child_tidptr=0x555578238750) = 5854
[ 94.536508][ T5852] overlay: filesystem on ./file0 not supported as upperdir
[pid 5854] set_robust_list(0x555578238760, 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
[pid 5854] write(1, "executing program\n", 18executing program
) = 18
[pid 5854] memfd_create("syzkaller", 0) = 3
[pid 5854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5854] close(3) = 0
[pid 5854] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5854] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5854] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5854] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5854] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=16 /* 0.16 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 94.893188][ T5854] overlay: filesystem on ./file0 not supported as upperdir
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5855 attached
, child_tidptr=0x555578238750) = 5855
[pid 5855] set_robust_list(0x555578238760, 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
[pid 5855] write(1, "executing program\n", 18executing program
) = 18
[pid 5855] memfd_create("syzkaller", 0) = 3
[pid 5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5855] close(3) = 0
[pid 5855] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5855] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5855] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5855] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5855] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 95.289102][ T5855] overlay: filesystem on ./file0 not supported as upperdir
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached
, child_tidptr=0x555578238750) = 5856
[pid 5856] set_robust_list(0x555578238760, 24) = 0
[pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5856] setpgid(0, 0) = 0
[pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5856] write(3, "1000", 4) = 4
[pid 5856] close(3) = 0
executing program
[pid 5856] write(1, "executing program\n", 18) = 18
[pid 5856] memfd_create("syzkaller", 0) = 3
[pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[pid 5856] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5856] munmap(0x7fbcb7c00000, 138412032) = 0
[pid 5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5856] close(3) = 0
[pid 5856] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5856] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5856] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5856] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5856] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid 5856] exit_group(0) = ?
[pid 5856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5856, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5857 attached
, child_tidptr=0x555578238750) = 5857
[pid 5857] set_robust_list(0x555578238760, 24) = 0
[pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5857] setpgid(0, 0) = 0
[ 95.577991][ T5856] overlay: filesystem on ./file0 not supported as upperdir
[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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5857] close(3) = 0
[pid 5857] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5857] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5857] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5857] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5857] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5858 attached
, child_tidptr=0x555578238750) = 5858
[pid 5858] set_robust_list(0x555578238760, 24) = 0
[ 95.880711][ T5857] overlay: filesystem on ./file0 not supported as upperdir
[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
[pid 5858] write(1, "executing program\n", 18executing program
) = 18
[pid 5858] memfd_create("syzkaller", 0) = 3
[pid 5858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5858] close(3) = 0
[pid 5858] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5858] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5858] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5858] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5858] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=19 /* 0.19 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 96.204231][ T5858] overlay: filesystem on ./file0 not supported as upperdir
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5859 attached
, child_tidptr=0x555578238750) = 5859
[pid 5859] set_robust_list(0x555578238760, 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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5859] close(3) = 0
[pid 5859] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5859] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5859] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5859] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5859] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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 */} ---
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 5860 attached
, child_tidptr=0x555578238750) = 5860
[pid 5860] set_robust_list(0x555578238760, 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) = 0x7fbcb7c00000
[ 96.533645][ T5859] overlay: filesystem on ./file0 not supported as upperdir
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5860] close(3) = 0
[pid 5860] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5860] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5860] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5860] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5860] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=1 /* 0.01 s */, si_stime=15 /* 0.15 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=0x555578238750) = 5861
[pid 5861] set_robust_list(0x555578238760, 24) = 0
[pid 5861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 96.788856][ T5860] overlay: filesystem on ./file0 not supported as upperdir
[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
[pid 5861] write(1, "executing program\n", 18executing program
) = 18
[pid 5861] memfd_create("syzkaller", 0) = 3
[pid 5861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5861] close(3) = 0
[pid 5861] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5861] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5861] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5861] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5861] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5862 attached
, child_tidptr=0x555578238750) = 5862
[pid 5862] set_robust_list(0x555578238760, 24) = 0
[pid 5862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5862] setpgid(0, 0) = 0
[ 97.126782][ T5861] overlay: filesystem on ./file0 not supported as upperdir
[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
[pid 5862] write(1, "executing program\n", 18executing program
) = 18
[pid 5862] memfd_create("syzkaller", 0) = 3
[pid 5862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5862] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5862] close(3) = 0
[pid 5862] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5862] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5862] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5862] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5862] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555578238750) = 5863
./strace-static-x86_64: Process 5863 attached
[pid 5863] set_robust_list(0x555578238760, 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
[ 97.426114][ T5862] overlay: filesystem on ./file0 not supported as upperdir
[pid 5863] write(3, "1000", 4) = 4
[pid 5863] close(3executing program
) = 0
[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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5863] close(3) = 0
[pid 5863] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5863] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5863] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5863] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5863] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5865 attached
[pid 5865] set_robust_list(0x555578238760, 24
[pid 5831] <... clone resumed>, child_tidptr=0x555578238750) = 5865
[pid 5865] <... set_robust_list resumed>) = 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
[ 97.710642][ T5863] overlay: filesystem on ./file0 not supported as upperdir
[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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5865] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5865] close(3) = 0
[pid 5865] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5865] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5865] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5865] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5865] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 98.006836][ T5865] overlay: filesystem on ./file0 not supported as upperdir
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555578238750) = 5866
./strace-static-x86_64: Process 5866 attached
[pid 5866] set_robust_list(0x555578238760, 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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5866] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5866] close(3) = 0
[pid 5866] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5866] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5866] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5866] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5866] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=1 /* 0.01 s */, si_stime=15 /* 0.15 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, child_tidptr=0x555578238750) = 5867
./strace-static-x86_64: Process 5867 attached
[pid 5867] set_robust_list(0x555578238760, 24) = 0
[ 98.318364][ T5866] overlay: filesystem on ./file0 not supported as upperdir
[pid 5867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5867] setpgid(0, 0) = 0
[pid 5867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5867] write(3, "1000", 4) = 4
[pid 5867] close(3) = 0
[pid 5867] write(1, "executing program\n", 18executing program
) = 18
[pid 5867] memfd_create("syzkaller", 0) = 3
[pid 5867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[pid 5867] 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 5867] munmap(0x7fbcb7c00000, 138412032) = 0
[pid 5867] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5867] close(3) = 0
[pid 5867] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5867] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5867] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5867] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5867] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid 5867] exit_group(0) = ?
[pid 5867] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5867, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5868 attached
, child_tidptr=0x555578238750) = 5868
[pid 5868] set_robust_list(0x555578238760, 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
[pid 5868] write(1, "executing program\n", 18executing program
) = 18
[pid 5868] memfd_create("syzkaller", 0) = 3
[pid 5868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[ 98.632279][ T5867] overlay: filesystem on ./file0 not supported as upperdir
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5868] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5868] close(3) = 0
[pid 5868] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5868] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5868] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5868] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5868] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=0, si_stime=18 /* 0.18 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5869 attached
, child_tidptr=0x555578238750) = 5869
[pid 5869] set_robust_list(0x555578238760, 24) = 0
[pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 98.922011][ T5868] overlay: filesystem on ./file0 not supported as upperdir
[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) = 0x7fbcb7c00000
[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(0x7fbcb7c00000, 138412032) = 0
[pid 5869] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5869] close(3) = 0
[pid 5869] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5869] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5869] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5869] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5869] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555578238750) = 5870
./strace-static-x86_64: Process 5870 attached
[pid 5870] set_robust_list(0x555578238760, 24) = 0
[ 99.284757][ T5869] overlay: filesystem on ./file0 not supported as upperdir
[pid 5870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5870] setpgid(0, 0) = 0
[pid 5870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5870] write(3, "1000", 4) = 4
[pid 5870] close(3) = 0
[pid 5870] write(1, "executing program\n", 18executing program
) = 18
[pid 5870] memfd_create("syzkaller", 0) = 3
[pid 5870] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[pid 5870] 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 5870] munmap(0x7fbcb7c00000, 138412032) = 0
[pid 5870] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5870] close(3) = 0
[pid 5870] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5870] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5870] mkdir("./file1", 0777) = -1 EEXIST (File exists)
[pid 5870] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5870] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid 5870] exit_group(0) = ?
[pid 5870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5870, 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)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5871 attached
, child_tidptr=0x555578238750) = 5871
[pid 5871] set_robust_list(0x555578238760, 24) = 0
[pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5871] setpgid(0, 0) = 0
[pid 5871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5871] write(3, "1000", 4) = 4
[pid 5871] close(3) = 0
[pid 5871] write(1, "executing program\n", 18executing program
) = 18
[ 99.616017][ T5870] overlay: filesystem on ./file0 not supported as upperdir
[pid 5871] memfd_create("syzkaller", 0) = 3
[pid 5871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbcb7c00000
[pid 5871] 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 5871] munmap(0x7fbcb7c00000, 138412032) = 0
[pid 5871] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)