./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1664790447
<...>
Warning: Permanently added '10.128.10.2' (ED25519) to the list of known hosts.
execve("./syz-executor1664790447", ["./syz-executor1664790447"], 0x7ffdd9f76580 /* 10 vars */) = 0
brk(NULL) = 0x555566328000
brk(0x555566328e00) = 0x555566328e00
arch_prctl(ARCH_SET_FS, 0x555566328480) = 0
set_tid_address(0x555566328750) = 5822
set_robust_list(0x555566328760, 24) = 0
rseq(0x555566328da0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1664790447", 4096) = 28
getrandom("\x81\xa7\x66\x75\xcc\x30\x24\x4b", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555566328e00
brk(0x555566349e00) = 0x555566349e00
brk(0x55556634a000) = 0x55556634a000
mprotect(0x7f0cc8f00000, 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=0x7f0cc8e52a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f0cc8e5b460}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7f0cc8e52a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f0cc8e5b460}, 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 5823 attached
, child_tidptr=0x555566328750) = 5823
[pid 5823] set_robust_list(0x555566328760, 24) = 0
[pid 5823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5823] setpgid(0, 0) = 0
[pid 5823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5823] write(3, "1000", 4) = 4
[pid 5823] close(3) = 0
executing program
[pid 5823] write(1, "executing program\n", 18) = 18
[pid 5823] memfd_create("syzkaller", 0) = 3
[pid 5823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[pid 5823] 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 5823] munmap(0x7f0cc0a00000, 138412032) = 0
[pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5823] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5823] close(3) = 0
[pid 5823] close(4) = 0
[pid 5823] mkdir("./file1", 0777) = 0
[ 91.356345][ T5823] loop0: detected capacity change from 0 to 32768
[ 91.400217][ T5823] =======================================================
[ 91.400217][ T5823] WARNING: The mand mount option has been deprecated and
[ 91.400217][ T5823] and is ignored by this kernel. Remove the mand
[ 91.400217][ T5823] option from the mount to silence this warning.
[ 91.400217][ T5823] =======================================================
[pid 5823] 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 5823] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid 5823] chdir("./file1") = 0
[pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 91.477622][ T5823] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
[pid 5823] mkdir("./file0", 000) = 0
[pid 5823] mkdir("./file2", 0777) = 0
[pid 5823] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[ 91.567464][ T5823] overlayfs: upper fs does not support tmpfile.
[ 91.576453][ T5823] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 91.583718][ T5823]
[ 91.586051][ T5823] ======================================================
[ 91.593057][ T5823] WARNING: possible circular locking dependency detected
[ 91.600076][ T5823] 6.15.0-syzkaller-01958-g785cdec46e92 #0 Not tainted
[ 91.606828][ T5823] ------------------------------------------------------
[ 91.613835][ T5823] syz-executor166/5823 is trying to acquire lock:
[ 91.620241][ T5823] ffff88807354d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 91.633507][ T5823]
[ 91.633507][ T5823] but task is already holding lock:
[ 91.640865][ T5823] ffff888073554e38 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[ 91.650361][ T5823]
[ 91.650361][ T5823] which lock already depends on the new lock.
[ 91.650361][ T5823]
[ 91.660758][ T5823]
[ 91.660758][ T5823] the existing dependency chain (in reverse order) is:
[ 91.669763][ T5823]
[ 91.669763][ T5823] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}:
[ 91.677586][ T5823] lock_acquire+0x120/0x360
[ 91.682610][ T5823] down_write+0x96/0x1f0
[ 91.687387][ T5823] ocfs2_xattr_set_handle+0x3b0/0x7a0
[ 91.693280][ T5823] ocfs2_init_security_set+0xbd/0xe0
[ 91.699088][ T5823] ocfs2_mknod+0x137f/0x2050
[ 91.704195][ T5823] ocfs2_mkdir+0x191/0x440
[ 91.709130][ T5823] vfs_mkdir+0x303/0x510
[ 91.713889][ T5823] do_mkdirat+0x247/0x590
[ 91.718761][ T5823] __x64_sys_mkdir+0x6c/0x80
[ 91.723869][ T5823] do_syscall_64+0xf6/0x220
[ 91.728893][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 91.735307][ T5823]
[ 91.735307][ T5823] -> #3 (jbd2_handle){.+.+}-{0:0}:
[ 91.742604][ T5823] lock_acquire+0x120/0x360
[ 91.747627][ T5823] start_this_handle+0x1fa7/0x21c0
[ 91.753253][ T5823] jbd2__journal_start+0x2c1/0x5b0
[ 91.758882][ T5823] jbd2_journal_start+0x2a/0x40
[ 91.764348][ T5823] ocfs2_start_trans+0x376/0x6d0
[ 91.769818][ T5823] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 91.776250][ T5823] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 91.783118][ T5823] ocfs2_mknod+0xe08/0x2050
[ 91.788143][ T5823] ocfs2_mkdir+0x191/0x440
[ 91.793077][ T5823] vfs_mkdir+0x303/0x510
[ 91.797843][ T5823] do_mkdirat+0x247/0x590
[ 91.802697][ T5823] __x64_sys_mkdir+0x6c/0x80
[ 91.807811][ T5823] do_syscall_64+0xf6/0x220
[ 91.812832][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 91.819248][ T5823]
[ 91.819248][ T5823] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
[ 91.827786][ T5823] lock_acquire+0x120/0x360
[ 91.832812][ T5823] down_read+0x46/0x2e0
[ 91.837487][ T5823] ocfs2_start_trans+0x36a/0x6d0
[ 91.842946][ T5823] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 91.849359][ T5823] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 91.856205][ T5823] ocfs2_mknod+0xe08/0x2050
[ 91.861225][ T5823] ocfs2_mkdir+0x191/0x440
[ 91.866156][ T5823] vfs_mkdir+0x303/0x510
[ 91.870915][ T5823] do_mkdirat+0x247/0x590
[ 91.875771][ T5823] __x64_sys_mkdir+0x6c/0x80
[ 91.880881][ T5823] do_syscall_64+0xf6/0x220
[ 91.885921][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 91.892349][ T5823]
[ 91.892349][ T5823] -> #1 (sb_internal#2){.+.+}-{0:0}:
[ 91.899836][ T5823] lock_acquire+0x120/0x360
[ 91.904878][ T5823] ocfs2_start_trans+0x26b/0x6d0
[ 91.910340][ T5823] ocfs2_reserve_suballoc_bits+0x711/0x4640
[ 91.916758][ T5823] ocfs2_reserve_new_metadata_blocks+0x403/0x940
[ 91.923607][ T5823] ocfs2_mknod+0xe08/0x2050
[ 91.928631][ T5823] ocfs2_mkdir+0x191/0x440
[ 91.933565][ T5823] vfs_mkdir+0x303/0x510
[ 91.938326][ T5823] do_mkdirat+0x247/0x590
[ 91.943177][ T5823] __x64_sys_mkdir+0x6c/0x80
[ 91.948286][ T5823] do_syscall_64+0xf6/0x220
[ 91.953309][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 91.959720][ T5823]
[ 91.959720][ T5823] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}:
[ 91.970239][ T5823] validate_chain+0xb9b/0x2140
[ 91.975530][ T5823] __lock_acquire+0xab9/0xd20
[ 91.980811][ T5823] lock_acquire+0x120/0x360
[ 91.985830][ T5823] down_write+0x96/0x1f0
[ 91.990591][ T5823] ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 91.997005][ T5823] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0
[ 92.003873][ T5823] ocfs2_init_xattr_set_ctxt+0x376/0x700
[ 92.010029][ T5823] ocfs2_xattr_set+0xb70/0x11f0
[ 92.015404][ T5823] __vfs_setxattr+0x43c/0x480
[ 92.020599][ T5823] __vfs_setxattr_noperm+0x12d/0x660
[ 92.026414][ T5823] vfs_setxattr+0x16b/0x2f0
[ 92.031436][ T5823] ovl_get_workdir+0xbb7/0x1730
[ 92.036808][ T5823] ovl_fill_super+0x1386/0x35d0
[ 92.042178][ T5823] get_tree_nodev+0xbb/0x150
[ 92.047288][ T5823] vfs_get_tree+0x8f/0x2b0
[ 92.052225][ T5823] do_new_mount+0x24a/0xa40
[ 92.057250][ T5823] __se_sys_mount+0x317/0x410
[ 92.062453][ T5823] do_syscall_64+0xf6/0x220
[ 92.067474][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.073884][ T5823]
[ 92.073884][ T5823] other info that might help us debug this:
[ 92.073884][ T5823]
[ 92.084105][ T5823] Chain exists of:
[ 92.084105][ T5823] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> jbd2_handle --> &oi->ip_xattr_sem
[ 92.084105][ T5823]
[ 92.099870][ T5823] Possible unsafe locking scenario:
[ 92.099870][ T5823]
[ 92.107318][ T5823] CPU0 CPU1
[ 92.112681][ T5823] ---- ----
[ 92.118044][ T5823] lock(&oi->ip_xattr_sem);
[ 92.122633][ T5823] lock(jbd2_handle);
[ 92.129229][ T5823] lock(&oi->ip_xattr_sem);
[ 92.136354][ T5823] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);
[ 92.143643][ T5823]
[ 92.143643][ T5823] *** DEADLOCK ***
[ 92.143643][ T5823]
[ 92.151781][ T5823] 4 locks held by syz-executor166/5823:
[ 92.157323][ T5823] #0: ffff8880781ec0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970
[ 92.167447][ T5823] #1: ffff888034e36428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
[ 92.176614][ T5823] #2: ffff888073555100 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0
[ 92.187092][ T5823] #3: ffff888073554e38 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[ 92.197034][ T5823]
[ 92.197034][ T5823] stack backtrace:
[ 92.202932][ T5823] CPU: 1 UID: 0 PID: 5823 Comm: syz-executor166 Not tainted 6.15.0-syzkaller-01958-g785cdec46e92 #0 PREEMPT(full)
[ 92.202952][ T5823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 92.202966][ T5823] Call Trace:
[ 92.202974][ T5823]
[ 92.202983][ T5823] dump_stack_lvl+0x189/0x250
[ 92.203008][ T5823] ? __pfx_dump_stack_lvl+0x10/0x10
[ 92.203029][ T5823] ? __pfx__printk+0x10/0x10
[ 92.203052][ T5823] ? print_lock_name+0xde/0x100
[ 92.203075][ T5823] print_circular_bug+0x2ee/0x310
[ 92.203096][ T5823] check_noncircular+0x134/0x160
[ 92.203117][ T5823] validate_chain+0xb9b/0x2140
[ 92.203147][ T5823] ? __mutex_unlock_slowpath+0x1cd/0x700
[ 92.203167][ T5823] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 92.203190][ T5823] __lock_acquire+0xab9/0xd20
[ 92.203207][ T5823] ? ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 92.203225][ T5823] lock_acquire+0x120/0x360
[ 92.203239][ T5823] ? ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 92.203261][ T5823] ? __kasan_check_byte+0x12/0x40
[ 92.203282][ T5823] ? unwind_next_frame+0xa5/0x2390
[ 92.203302][ T5823] down_write+0x96/0x1f0
[ 92.203320][ T5823] ? ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 92.203337][ T5823] ? __pfx_down_write+0x10/0x10
[ 92.203357][ T5823] ? lock_release+0x4b/0x3e0
[ 92.203372][ T5823] ocfs2_reserve_suballoc_bits+0x15e/0x4640
[ 92.203391][ T5823] ? is_bpf_text_address+0x26/0x2b0
[ 92.203409][ T5823] ? kernel_text_address+0xa5/0xe0
[ 92.203423][ T5823] ? __kernel_text_address+0xd/0x40
[ 92.203436][ T5823] ? unwind_get_return_address+0x4d/0x90
[ 92.203454][ T5823] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 92.203475][ T5823] ? arch_stack_walk+0xfc/0x150
[ 92.203499][ T5823] ? stack_trace_save+0x9c/0xe0
[ 92.203517][ T5823] ? __pfx_ocfs2_reserve_suballoc_bits+0x10/0x10
[ 92.203537][ T5823] ? check_path+0x21/0x40
[ 92.203553][ T5823] ? check_noncircular+0xe0/0x160
[ 92.203573][ T5823] ? lockdep_unlock+0x89/0x120
[ 92.203586][ T5823] ? validate_chain+0x897/0x2140
[ 92.203604][ T5823] ? get_tree_nodev+0xbb/0x150
[ 92.203635][ T5823] ? __lock_acquire+0xab9/0xd20
[ 92.203657][ T5823] ? do_raw_spin_unlock+0x122/0x240
[ 92.203679][ T5823] ? _raw_spin_unlock+0x28/0x50
[ 92.203691][ T5823] ? ocfs2_alloc_should_use_local+0x152/0x310
[ 92.203714][ T5823] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0
[ 92.203733][ T5823] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0
[ 92.203754][ T5823] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10
[ 92.203776][ T5823] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10
[ 92.203800][ T5823] ? __lock_acquire+0xab9/0xd20
[ 92.203819][ T5823] ocfs2_init_xattr_set_ctxt+0x376/0x700
[ 92.203841][ T5823] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10
[ 92.203864][ T5823] ? ocfs2_xattr_set+0xb36/0x11f0
[ 92.203888][ T5823] ? up_write+0x1c4/0x420
[ 92.203906][ T5823] ? ocfs2_xattr_set+0x334/0x11f0
[ 92.203926][ T5823] ocfs2_xattr_set+0xb70/0x11f0
[ 92.203954][ T5823] ? __pfx_ocfs2_xattr_set+0x10/0x10
[ 92.203973][ T5823] ? up+0xde/0x150
[ 92.203991][ T5823] ? smack_log+0xef/0x3f0
[ 92.204006][ T5823] ? smk_access+0x14c/0x4e0
[ 92.204031][ T5823] ? smk_tskacc+0x2fc/0x370
[ 92.204046][ T5823] ? posix_xattr_acl+0x93/0xc0
[ 92.204067][ T5823] ? evm_protect_xattr+0x4d4/0xa90
[ 92.204089][ T5823] ? __pfx_evm_protect_xattr+0x10/0x10
[ 92.204108][ T5823] ? safesetid_security_capable+0xa9/0x1a0
[ 92.204126][ T5823] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10
[ 92.204147][ T5823] __vfs_setxattr+0x43c/0x480
[ 92.204171][ T5823] __vfs_setxattr_noperm+0x12d/0x660
[ 92.204194][ T5823] vfs_setxattr+0x16b/0x2f0
[ 92.204216][ T5823] ? __pfx_vfs_setxattr+0x10/0x10
[ 92.204236][ T5823] ? up_write+0x1c4/0x420
[ 92.204262][ T5823] ovl_get_workdir+0xbb7/0x1730
[ 92.204285][ T5823] ? __pfx_ovl_get_workdir+0x10/0x10
[ 92.204313][ T5823] ? do_raw_spin_unlock+0x122/0x240
[ 92.204335][ T5823] ? _raw_spin_unlock+0x28/0x50
[ 92.204347][ T5823] ? ovl_inuse_trylock+0xae/0xf0
[ 92.204366][ T5823] ovl_fill_super+0x1386/0x35d0
[ 92.204389][ T5823] ? rcu_is_watching+0x15/0xb0
[ 92.204409][ T5823] ? shrinker_register+0x124/0x230
[ 92.204428][ T5823] ? __pfx_ovl_fill_super+0x10/0x10
[ 92.204446][ T5823] ? __pfx___mutex_lock+0x10/0x10
[ 92.204462][ T5823] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 92.204482][ T5823] ? __raw_spin_lock_init+0x45/0x100
[ 92.204507][ T5823] ? sget_fc+0x962/0xa40
[ 92.204522][ T5823] ? __pfx_set_anon_super_fc+0x10/0x10
[ 92.204539][ T5823] ? __pfx_ovl_fill_super+0x10/0x10
[ 92.204557][ T5823] get_tree_nodev+0xbb/0x150
[ 92.204575][ T5823] vfs_get_tree+0x8f/0x2b0
[ 92.204594][ T5823] do_new_mount+0x24a/0xa40
[ 92.204621][ T5823] __se_sys_mount+0x317/0x410
[ 92.204644][ T5823] ? __pfx___se_sys_mount+0x10/0x10
[ 92.204666][ T5823] ? __x64_sys_mount+0x20/0xc0
[ 92.204687][ T5823] do_syscall_64+0xf6/0x220
[ 92.204705][ T5823] ? clear_bhb_loop+0x60/0xb0
[ 92.204722][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.204736][ T5823] RIP: 0033:0x7f0cc8e88519
[ 92.204753][ T5823] 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
[ 92.204765][ T5823] RSP: 002b:00007ffdbad9cb98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 92.204781][ T5823] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0cc8e88519
[ 92.204791][ T5823] RDX: 0000200000000000 RSI: 0000200000000380 RDI: 0000000000000000
[ 92.204801][ T5823] RBP: 0000000000000000 R08: 0000200000000140 R09: 00007ffdbad9cbd0
[ 92.204811][ T5823] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdbad9cbd0
[ 92.204820][ T5823] R13: 00007ffdbad9ce58 R14: 431bde82d7b634db R15: 00007f0cc8ed103b
[ 92.204836][ T5823]
[ 92.759134][ T24] cfg80211: failed to load regulatory.db
[pid 5823] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5823] exit_group(0) = ?
[pid 5823] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5823, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, 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)
[ 92.773119][ T5823] overlayfs: upper fs missing required features.
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5830 attached
, child_tidptr=0x555566328750) = 5830
[pid 5830] set_robust_list(0x555566328760, 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
executing program
[pid 5830] write(1, "executing program\n", 18) = 18
[pid 5830] memfd_create("syzkaller", 0) = 3
[pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 138412032) = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5830] close(3) = 0
[pid 5830] mkdir("./file0", 000) = 0
[pid 5830] mkdir("./file2", 0777) = 0
[pid 5830] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5830] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = 0
[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=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 5832 attached
[pid 5832] set_robust_list(0x555566328760, 24) = 0
[pid 5832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5832] setpgid(0, 0) = 0
[pid 5832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5832] write(3, "1000", 4) = 4
[pid 5832] close(3) = 0
executing program
[pid 5832] write(1, "executing program\n", 18) = 18
[pid 5832] memfd_create("syzkaller", 0) = 3
[pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[pid 5822] <... clone resumed>, child_tidptr=0x555566328750) = 5832
[pid 5832] 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 5832] munmap(0x7f0cc0a00000, 138412032) = 0
[pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5832] close(3) = 0
[pid 5832] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5832] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5832] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5832] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5832] exit_group(0) = ?
[pid 5832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5832, 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 5833 attached
, child_tidptr=0x555566328750) = 5833
[ 93.275830][ T5832] overlay: filesystem on ./file0 not supported as upperdir
[pid 5833] set_robust_list(0x555566328760, 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
executing program
[pid 5833] write(1, "executing program\n", 18) = 18
[pid 5833] memfd_create("syzkaller", 0) = 3
[pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 138412032) = 0
[pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5833] close(3) = 0
[pid 5833] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5833] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5833] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5833] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -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=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 5835 attached
, child_tidptr=0x555566328750) = 5835
[ 93.613252][ T5833] overlay: filesystem on ./file0 not supported as upperdir
[pid 5835] set_robust_list(0x555566328760, 24) = 0
[pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5835] setpgid(0, 0) = 0
[pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5835] write(3, "1000", 4) = 4
[pid 5835] close(3) = 0
executing program
[pid 5835] write(1, "executing program\n", 18) = 18
[pid 5835] memfd_create("syzkaller", 0) = 3
[pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[pid 5835] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5835] munmap(0x7f0cc0a00000, 138412032) = 0
[pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5835] close(3) = 0
[pid 5835] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5835] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5835] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5835] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5835] exit_group(0) = ?
[pid 5835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=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)
[ 93.934760][ T5835] 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 5836 attached
, child_tidptr=0x555566328750) = 5836
[pid 5836] set_robust_list(0x555566328760, 24) = 0
[pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5836] setpgid(0, 0) = 0
[pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5836] write(3, "1000", 4) = 4
[pid 5836] close(3) = 0
executing program
[pid 5836] write(1, "executing program\n", 18) = 18
[pid 5836] memfd_create("syzkaller", 0) = 3
[pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[pid 5836] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5836] munmap(0x7f0cc0a00000, 138412032) = 0
[pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5836] close(3) = 0
[pid 5836] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5836] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5836] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5836] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5836] exit_group(0) = ?
[pid 5836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 94.290726][ T5836] overlay: filesystem on ./file0 not supported as upperdir
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555566328750) = 5837
./strace-static-x86_64: Process 5837 attached
[pid 5837] set_robust_list(0x555566328760, 24) = 0
[pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5837] setpgid(0, 0) = 0
[pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5837] write(3, "1000", 4) = 4
[pid 5837] close(3) = 0
[pid 5837] write(1, "executing program\n", 18executing program
) = 18
[pid 5837] memfd_create("syzkaller", 0) = 3
[pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[pid 5837] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5837] munmap(0x7f0cc0a00000, 138412032) = 0
[pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5837] close(3) = 0
[pid 5837] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5837] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5837] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5837] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5837] exit_group(0) = ?
[pid 5837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=11 /* 0.11 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555566328750) = 5838
./strace-static-x86_64: Process 5838 attached
[ 94.672142][ T5837] overlay: filesystem on ./file0 not supported as upperdir
[pid 5838] set_robust_list(0x555566328760, 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
executing program
[pid 5838] write(1, "executing program\n", 18) = 18
[pid 5838] memfd_create("syzkaller", 0) = 3
[pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 138412032) = 0
[pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5838] close(3) = 0
[pid 5838] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5838] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5838] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5838] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -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=0, si_stime=15 /* 0.15 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 95.026376][ T5838] 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 5839 attached
, child_tidptr=0x555566328750) = 5839
[pid 5839] set_robust_list(0x555566328760, 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
executing program
[pid 5839] write(1, "executing program\n", 18) = 18
[pid 5839] memfd_create("syzkaller", 0) = 3
[pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 138412032) = 0
[pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5839] close(3) = 0
[pid 5839] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5839] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5839] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5839] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -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=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached
, child_tidptr=0x555566328750) = 5840
[ 95.376127][ T5839] overlay: filesystem on ./file0 not supported as upperdir
[pid 5840] set_robust_list(0x555566328760, 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) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5840] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5840] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5840] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -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)
[ 95.728738][ T5840] 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 5841 attached
, child_tidptr=0x555566328750) = 5841
[pid 5841] set_robust_list(0x555566328760, 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
executing program
[pid 5841] write(1, "executing program\n", 18) = 18
[pid 5841] memfd_create("syzkaller", 0) = 3
[pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 138412032) = 0
[pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5841] close(3) = 0
[pid 5841] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5841] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5841] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5841] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -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=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 5843 attached
, child_tidptr=0x555566328750) = 5843
[pid 5843] set_robust_list(0x555566328760, 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
executing program
[pid 5843] write(1, "executing program\n", 18) = 18
[pid 5843] memfd_create("syzkaller", 0) = 3
[pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[ 96.094668][ T5841] overlay: filesystem on ./file0 not supported as upperdir
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5843] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=4 /* 0.04 s */, si_stime=12 /* 0.12 s */} ---
[ 96.371108][ T5843] overlay: filesystem on ./file0 not supported as upperdir
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=0x555566328750) = 5844
[pid 5844] set_robust_list(0x555566328760, 24) = 0
[pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5844] setpgid(0, 0) = 0
[pid 5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5844] write(3, "1000", 4) = 4
[pid 5844] close(3) = 0
executing program
[pid 5844] write(1, "executing program\n", 18) = 18
[pid 5844] memfd_create("syzkaller", 0) = 3
[pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5844] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5845 attached
, child_tidptr=0x555566328750) = 5845
[ 96.724737][ T5844] overlay: filesystem on ./file0 not supported as upperdir
[pid 5845] set_robust_list(0x555566328760, 24) = 0
[pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5845] setpgid(0, 0) = 0
[pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5845] write(3, "1000", 4) = 4
[pid 5845] close(3) = 0
[pid 5845] write(1, "executing program\n", 18executing program
) = 18
[pid 5845] memfd_create("syzkaller", 0) = 3
[pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5845] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=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)
[ 97.067685][ T5845] 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 5846 attached
, child_tidptr=0x555566328750) = 5846
[pid 5846] set_robust_list(0x555566328760, 24) = 0
[pid 5846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5846] setpgid(0, 0) = 0
[pid 5846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5846] write(3, "1000", 4) = 4
[pid 5846] close(3) = 0
executing program
[pid 5846] write(1, "executing program\n", 18) = 18
[pid 5846] memfd_create("syzkaller", 0) = 3
[pid 5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5846] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5846] exit_group(0) = ?
[pid 5846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5846, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 97.393121][ T5846] overlay: filesystem on ./file0 not supported as upperdir
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555566328750) = 5847
./strace-static-x86_64: Process 5847 attached
[pid 5847] set_robust_list(0x555566328760, 24) = 0
[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) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5847] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 97.753801][ T5847] 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 5848 attached
, child_tidptr=0x555566328750) = 5848
[pid 5848] set_robust_list(0x555566328760, 24) = 0
[pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5848] setpgid(0, 0) = 0
[pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5848] write(3, "1000", 4) = 4
[pid 5848] close(3) = 0
[pid 5848] write(1, "executing program\n", 18executing program
) = 18
[pid 5848] memfd_create("syzkaller", 0) = 3
[pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5848] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 98.096455][ T5848] 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 5849 attached
, child_tidptr=0x555566328750) = 5849
[pid 5849] set_robust_list(0x555566328760, 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) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5849] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=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 5850 attached
, child_tidptr=0x555566328750) = 5850
[ 98.431165][ T5849] overlay: filesystem on ./file0 not supported as upperdir
[pid 5850] set_robust_list(0x555566328760, 24) = 0
[pid 5850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5850] setpgid(0, 0) = 0
[pid 5850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5850] write(3, "1000", 4) = 4
[pid 5850] close(3) = 0
executing program
[pid 5850] write(1, "executing program\n", 18) = 18
[pid 5850] memfd_create("syzkaller", 0) = 3
[pid 5850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5850] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 98.786196][ T5850] 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 5851 attached
, child_tidptr=0x555566328750) = 5851
[pid 5851] set_robust_list(0x555566328760, 24) = 0
[pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5851] setpgid(0, 0) = 0
[pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5851] write(3, "1000", 4) = 4
[pid 5851] close(3) = 0
executing program
[pid 5851] write(1, "executing program\n", 18) = 18
[pid 5851] memfd_create("syzkaller", 0) = 3
[pid 5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5851] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=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 5853 attached
, child_tidptr=0x555566328750) = 5853
[pid 5853] set_robust_list(0x555566328760, 24) = 0
[ 99.187301][ T5851] overlay: filesystem on ./file0 not supported as upperdir
[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) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 138412032) = 0
[pid 5853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5853] close(3) = 0
[pid 5853] mkdir("./file0", 000) = -1 EEXIST (File exists)
[pid 5853] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5853] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5853] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -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)
[ 99.520300][ T5853] 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 5854 attached
, child_tidptr=0x555566328750) = 5854
[pid 5854] set_robust_list(0x555566328760, 24) = 0
[pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5854] setpgid(0, 0) = 0
[pid 5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5854] write(3, "1000", 4) = 4
[pid 5854] close(3) = 0
executing program
[pid 5854] write(1, "executing program\n", 18) = 18
[pid 5854] memfd_create("syzkaller", 0) = 3
[pid 5854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5854] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=2 /* 0.02 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 5855 attached
, child_tidptr=0x555566328750) = 5855
[ 99.856114][ T5854] overlay: filesystem on ./file0 not supported as upperdir
[pid 5855] set_robust_list(0x555566328760, 24) = 0
[pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5855] setpgid(0, 0) = 0
[pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5855] write(3, "1000", 4) = 4
[pid 5855] close(3) = 0
executing program
[pid 5855] write(1, "executing program\n", 18) = 18
[pid 5855] memfd_create("syzkaller", 0) = 3
[pid 5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5855] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=4 /* 0.04 s */, si_stime=12 /* 0.12 s */} ---
[ 100.214387][ T5855] overlay: filesystem on ./file0 not supported as upperdir
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached
, child_tidptr=0x555566328750) = 5856
[pid 5856] set_robust_list(0x555566328760, 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
[pid 5856] write(1, "executing program\n", 18executing program
) = 18
[pid 5856] memfd_create("syzkaller", 0) = 3
[pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5856] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=4 /* 0.04 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 100.629367][ T5856] 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 5857 attached
, child_tidptr=0x555566328750) = 5857
[pid 5857] set_robust_list(0x555566328760, 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) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5857] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=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 5858 attached
, child_tidptr=0x555566328750) = 5858
[pid 5858] set_robust_list(0x555566328760, 24) = 0
[pid 5858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 100.972922][ T5857] overlay: filesystem on ./file0 not supported as upperdir
[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) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5858] mkdir("./file2", 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=./file0,lowerdir=.,upperdir=./file2,,") = -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=5 /* 0.05 s */, si_stime=10 /* 0.10 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 5859 attached
[ 101.267152][ T5858] overlay: filesystem on ./file0 not supported as upperdir
, child_tidptr=0x555566328750) = 5859
[pid 5859] set_robust_list(0x555566328760, 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) = 0x7f0cc0a00000
[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(0x7f0cc0a00000, 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", 000) = -1 EEXIST (File exists)
[pid 5859] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5859] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---