./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1256000721
<...>
Warning: Permanently added '10.128.0.113' (ED25519) to the list of known hosts.
execve("./syz-executor1256000721", ["./syz-executor1256000721"], 0x7ffd77282120 /* 10 vars */) = 0
brk(NULL) = 0x55556016c000
brk(0x55556016ce00) = 0x55556016ce00
arch_prctl(ARCH_SET_FS, 0x55556016c480) = 0
set_tid_address(0x55556016c750) = 5232
set_robust_list(0x55556016c760, 24) = 0
rseq(0x55556016cda0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1256000721", 4096) = 28
getrandom("\x2a\xe6\x6b\x86\x38\xab\x81\x92", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55556016ce00
brk(0x55556018de00) = 0x55556018de00
brk(0x55556018e000) = 0x55556018e000
mprotect(0x7fde1e817000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
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=0x7fde1e74aa50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fde1e753a50}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7fde1e74aa50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fde1e753a50}, 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 5233 attached
, child_tidptr=0x55556016c750) = 5233
[pid 5233] set_robust_list(0x55556016c760, 24) = 0
[pid 5233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5233] setpgid(0, 0) = 0
[pid 5233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5233] write(3, "1000", 4) = 4
[pid 5233] close(3) = 0
[pid 5233] write(1, "executing program\n", 18executing program
) = 18
[pid 5233] memfd_create("syzkaller", 0) = 3
[pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5233] 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 5233] munmap(0x7fde16200000, 138412032) = 0
[pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5233] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5233] close(3) = 0
[pid 5233] close(4) = 0
[pid 5233] mkdir("./file1", 0777) = 0
[ 68.377413][ T5233] loop0: detected capacity change from 0 to 32768
[ 68.435319][ T5233] =======================================================
[ 68.435319][ T5233] WARNING: The mand mount option has been deprecated and
[ 68.435319][ T5233] and is ignored by this kernel. Remove the mand
[ 68.435319][ T5233] option from the mount to silence this warning.
[ 68.435319][ T5233] =======================================================
[pid 5233] mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "coherency=buffered,heartbeat=none,coherency=full,errors=continue,journal_async_commit,localflocks,in"...) = 0
[pid 5233] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid 5233] chdir("./file1") = 0
[pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5233] memfd_create("syzkaller", 0) = 4
[pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[ 68.487771][ T5233] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
[pid 5233] write(4, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5233] munmap(0x7fde16200000, 138412032) = 0
[pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5233] close(4) = 0
[pid 5233] mkdir("./file2", 0777) = 0
[pid 5233] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5233] mkdir("./file0", 0777) = 0
[pid 5233] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[ 68.606004][ T5233]
[ 68.608370][ T5233] ======================================================
[ 68.615380][ T5233] WARNING: possible circular locking dependency detected
[ 68.622414][ T5233] 6.12.0-rc4-syzkaller-00045-gd12937763990 #0 Not tainted
[ 68.629511][ T5233] ------------------------------------------------------
[ 68.636538][ T5233] syz-executor125/5233 is trying to acquire lock:
[ 68.642944][ T5233] ffff88804e0ba610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0x9dd/0x1f00
[ 68.651942][ T5233]
[ 68.651942][ T5233] but task is already holding lock:
[ 68.659302][ T5233] ffff888076528660 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_setattr+0x9d0/0x1f00
[ 68.668610][ T5233]
[ 68.668610][ T5233] which lock already depends on the new lock.
[ 68.668610][ T5233]
[ 68.679000][ T5233]
[ 68.679000][ T5233] the existing dependency chain (in reverse order) is:
[ 68.688002][ T5233]
[ 68.688002][ T5233] -> #4 (&oi->ip_alloc_sem){+.+.}-{3:3}:
[ 68.695819][ T5233] lock_acquire+0x1ed/0x550
[ 68.700843][ T5233] down_write+0x99/0x220
[ 68.705620][ T5233] ocfs2_try_remove_refcount_tree+0xb6/0x330
[ 68.712139][ T5233] ocfs2_xattr_set+0xa4f/0x1930
[ 68.717522][ T5233] ocfs2_set_acl+0x4cb/0x580
[ 68.722644][ T5233] ocfs2_iop_set_acl+0x24a/0x3c0
[ 68.728114][ T5233] vfs_remove_acl+0x4cb/0x770
[ 68.733328][ T5233] ovl_workdir_create+0x52f/0x980
[ 68.738884][ T5233] ovl_get_workdir+0x311/0x1920
[ 68.744266][ T5233] ovl_fill_super+0x12a8/0x3560
[ 68.749692][ T5233] get_tree_nodev+0xb7/0x140
[ 68.754814][ T5233] vfs_get_tree+0x90/0x2b0
[ 68.759758][ T5233] do_new_mount+0x2be/0xb40
[ 68.764787][ T5233] __se_sys_mount+0x2d6/0x3c0
[ 68.769998][ T5233] do_syscall_64+0xf3/0x230
[ 68.775024][ T5233] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.781452][ T5233]
[ 68.781452][ T5233] -> #3 (&oi->ip_xattr_sem){++++}-{3:3}:
[ 68.789279][ T5233] lock_acquire+0x1ed/0x550
[ 68.794317][ T5233] down_read+0xb1/0xa40
[ 68.798995][ T5233] ocfs2_init_acl+0x397/0x930
[ 68.804200][ T5233] ocfs2_mknod+0x1c05/0x2b40
[ 68.809316][ T5233] ocfs2_mkdir+0x1ab/0x480
[ 68.814257][ T5233] vfs_mkdir+0x2f9/0x4f0
[ 68.819028][ T5233] do_mkdirat+0x264/0x3a0
[ 68.823887][ T5233] __x64_sys_mkdir+0x6c/0x80
[ 68.829007][ T5233] do_syscall_64+0xf3/0x230
[ 68.834032][ T5233] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.840455][ T5233]
[ 68.840455][ T5233] -> #2 (jbd2_handle){.+.+}-{0:0}:
[ 68.847763][ T5233] lock_acquire+0x1ed/0x550
[ 68.852820][ T5233] start_this_handle+0x1eb4/0x2110
[ 68.858460][ T5233] jbd2__journal_start+0x2da/0x5d0
[ 68.864097][ T5233] jbd2_journal_start+0x29/0x40
[ 68.869482][ T5233] ocfs2_start_trans+0x3c9/0x700
[ 68.874953][ T5233] ocfs2_reserve_suballoc_bits+0x9f6/0x4eb0
[ 68.881366][ T5233] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 68.888218][ T5233] ocfs2_mknod+0x143a/0x2b40
[ 68.893330][ T5233] ocfs2_mkdir+0x1ab/0x480
[ 68.898267][ T5233] vfs_mkdir+0x2f9/0x4f0
[ 68.903037][ T5233] do_mkdirat+0x264/0x3a0
[ 68.907892][ T5233] __x64_sys_mkdir+0x6c/0x80
[ 68.913007][ T5233] do_syscall_64+0xf3/0x230
[ 68.918031][ T5233] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.924457][ T5233]
[ 68.924457][ T5233] -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}:
[ 68.932975][ T5233] lock_acquire+0x1ed/0x550
[ 68.938008][ T5233] down_read+0xb1/0xa40
[ 68.942686][ T5233] ocfs2_start_trans+0x3be/0x700
[ 68.948147][ T5233] ocfs2_reserve_suballoc_bits+0x9f6/0x4eb0
[ 68.954575][ T5233] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 68.961434][ T5233] ocfs2_mknod+0x143a/0x2b40
[ 68.966554][ T5233] ocfs2_mkdir+0x1ab/0x480
[ 68.971505][ T5233] vfs_mkdir+0x2f9/0x4f0
[ 68.976275][ T5233] do_mkdirat+0x264/0x3a0
[ 68.981130][ T5233] __x64_sys_mkdir+0x6c/0x80
[ 68.986246][ T5233] do_syscall_64+0xf3/0x230
[ 68.991269][ T5233] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.997712][ T5233]
[ 68.997712][ T5233] -> #0 (sb_internal#2){.+.+}-{0:0}:
[ 69.005224][ T5233] validate_chain+0x18ef/0x5920
[ 69.010617][ T5233] __lock_acquire+0x1384/0x2050
[ 69.016007][ T5233] lock_acquire+0x1ed/0x550
[ 69.021038][ T5233] ocfs2_start_trans+0x2b9/0x700
[ 69.026506][ T5233] ocfs2_setattr+0x9dd/0x1f00
[ 69.031705][ T5233] notify_change+0xbca/0xe90
[ 69.036821][ T5233] ovl_workdir_create+0x782/0x980
[ 69.042373][ T5233] ovl_get_workdir+0x311/0x1920
[ 69.047751][ T5233] ovl_fill_super+0x12a8/0x3560
[ 69.053127][ T5233] get_tree_nodev+0xb7/0x140
[ 69.058245][ T5233] vfs_get_tree+0x90/0x2b0
[ 69.063202][ T5233] do_new_mount+0x2be/0xb40
[ 69.068234][ T5233] __se_sys_mount+0x2d6/0x3c0
[ 69.073441][ T5233] do_syscall_64+0xf3/0x230
[ 69.078467][ T5233] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 69.084887][ T5233]
[ 69.084887][ T5233] other info that might help us debug this:
[ 69.084887][ T5233]
[ 69.095118][ T5233] Chain exists of:
[ 69.095118][ T5233] sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem
[ 69.095118][ T5233]
[ 69.108369][ T5233] Possible unsafe locking scenario:
[ 69.108369][ T5233]
[ 69.115826][ T5233] CPU0 CPU1
[ 69.121198][ T5233] ---- ----
[ 69.126561][ T5233] lock(&oi->ip_alloc_sem);
[ 69.131171][ T5233] lock(&oi->ip_xattr_sem);
[ 69.138294][ T5233] lock(&oi->ip_alloc_sem);
[ 69.145413][ T5233] rlock(sb_internal#2);
[ 69.149757][ T5233]
[ 69.149757][ T5233] *** DEADLOCK ***
[ 69.149757][ T5233]
[ 69.157900][ T5233] 5 locks held by syz-executor125/5233:
[ 69.163447][ T5233] #0: ffff88802d2380e0 (&type->s_umount_key#44/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0
[ 69.173579][ T5233] #1: ffff88804e0ba420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90
[ 69.182736][ T5233] #2: ffff88807651ed80 (&sb->s_type->i_mutex_key#14/1){+.+.}-{3:3}, at: ovl_workdir_create+0x160/0x980
[ 69.193906][ T5233] #3: ffff8880765289c0 (&sb->s_type->i_mutex_key#16){+.+.}-{3:3}, at: ovl_workdir_create+0x6e3/0x980
[ 69.204890][ T5233] #4: ffff888076528660 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_setattr+0x9d0/0x1f00
[ 69.214653][ T5233]
[ 69.214653][ T5233] stack backtrace:
[ 69.220558][ T5233] CPU: 0 UID: 0 PID: 5233 Comm: syz-executor125 Not tainted 6.12.0-rc4-syzkaller-00045-gd12937763990 #0
[ 69.231663][ T5233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 69.241725][ T5233] Call Trace:
[ 69.245022][ T5233]
[ 69.247952][ T5233] dump_stack_lvl+0x241/0x360
[ 69.252647][ T5233] ? __pfx_dump_stack_lvl+0x10/0x10
[ 69.257865][ T5233] ? __pfx__printk+0x10/0x10
[ 69.262607][ T5233] print_circular_bug+0x13a/0x1b0
[ 69.267665][ T5233] check_noncircular+0x36a/0x4a0
[ 69.272616][ T5233] ? __pfx_check_noncircular+0x10/0x10
[ 69.278081][ T5233] ? lockdep_lock+0x123/0x2b0
[ 69.282764][ T5233] ? add_lock_to_list+0x1e8/0x2f0
[ 69.287813][ T5233] validate_chain+0x18ef/0x5920
[ 69.292674][ T5233] ? __pfx_validate_chain+0x10/0x10
[ 69.297888][ T5233] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 69.303879][ T5233] ? mark_lock+0x9a/0x360
[ 69.308228][ T5233] ? mark_lock+0x9a/0x360
[ 69.312561][ T5233] __lock_acquire+0x1384/0x2050
[ 69.317473][ T5233] lock_acquire+0x1ed/0x550
[ 69.322012][ T5233] ? ocfs2_setattr+0x9dd/0x1f00
[ 69.326883][ T5233] ? __pfx_lock_acquire+0x10/0x10
[ 69.331937][ T5233] ? __pfx_lock_release+0x10/0x10
[ 69.336974][ T5233] ? __pfx___might_resched+0x10/0x10
[ 69.342304][ T5233] ? do_raw_spin_unlock+0x13c/0x8b0
[ 69.347527][ T5233] ? _raw_spin_unlock+0x28/0x50
[ 69.352393][ T5233] ocfs2_start_trans+0x2b9/0x700
[ 69.357429][ T5233] ? ocfs2_setattr+0x9dd/0x1f00
[ 69.362302][ T5233] ? __pfx_ocfs2_start_trans+0x10/0x10
[ 69.367774][ T5233] ocfs2_setattr+0x9dd/0x1f00
[ 69.372481][ T5233] ? __pfx_ocfs2_setattr+0x10/0x10
[ 69.377601][ T5233] ? __pfx_smack_inode_setattr+0x10/0x10
[ 69.383243][ T5233] ? current_time+0x1be/0x2b0
[ 69.387920][ T5233] ? evm_inode_setattr+0x1b9/0x7d0
[ 69.393124][ T5233] ? security_inode_setattr+0xdb/0x350
[ 69.398587][ T5233] ? __pfx_ocfs2_setattr+0x10/0x10
[ 69.403706][ T5233] notify_change+0xbca/0xe90
[ 69.408305][ T5233] ovl_workdir_create+0x782/0x980
[ 69.413347][ T5233] ? __pfx_ovl_workdir_create+0x10/0x10
[ 69.418897][ T5233] ? rcu_read_lock_any_held+0xb7/0x160
[ 69.424381][ T5233] ? mnt_get_write_access+0x226/0x2b0
[ 69.429774][ T5233] ovl_get_workdir+0x311/0x1920
[ 69.434652][ T5233] ? __pfx_ovl_get_workdir+0x10/0x10
[ 69.439964][ T5233] ? ovl_inuse_trylock+0xab/0xf0
[ 69.444913][ T5233] ? do_raw_spin_lock+0x14f/0x370
[ 69.449986][ T5233] ? __pfx_lock_release+0x10/0x10
[ 69.455047][ T5233] ? do_raw_spin_unlock+0x13c/0x8b0
[ 69.460258][ T5233] ? _raw_spin_unlock+0x28/0x50
[ 69.465122][ T5233] ? ovl_inuse_trylock+0xab/0xf0
[ 69.470246][ T5233] ovl_fill_super+0x12a8/0x3560
[ 69.475111][ T5233] ? __pfx___might_resched+0x10/0x10
[ 69.480405][ T5233] ? shrinker_register+0x118/0x230
[ 69.485523][ T5233] ? __pfx_lock_release+0x10/0x10
[ 69.490562][ T5233] ? __pfx_ovl_fill_super+0x10/0x10
[ 69.495767][ T5233] ? __pfx_lockdep_init_map_type+0x10/0x10
[ 69.501581][ T5233] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 69.507605][ T5233] ? sget_fc+0x909/0x9c0
[ 69.511962][ T5233] ? __pfx_set_anon_super_fc+0x10/0x10
[ 69.517449][ T5233] ? __pfx_ovl_fill_super+0x10/0x10
[ 69.522691][ T5233] get_tree_nodev+0xb7/0x140
[ 69.527327][ T5233] vfs_get_tree+0x90/0x2b0
[ 69.531786][ T5233] do_new_mount+0x2be/0xb40
[ 69.536292][ T5233] ? __pfx_do_new_mount+0x10/0x10
[ 69.541322][ T5233] __se_sys_mount+0x2d6/0x3c0
[ 69.546004][ T5233] ? __pfx___se_sys_mount+0x10/0x10
[ 69.551205][ T5233] ? exc_page_fault+0x590/0x8c0
[ 69.556059][ T5233] ? __x64_sys_mount+0x20/0xc0
[ 69.560836][ T5233] do_syscall_64+0xf3/0x230
[ 69.565345][ T5233] ? clear_bhb_loop+0x35/0x90
[ 69.570042][ T5233] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 69.575962][ T5233] RIP: 0033:0x7fde1e780d59
[ 69.580386][ T5233] 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
[ 69.600357][ T5233] RSP: 002b:00007ffcd2b16de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 69.608778][ T5233] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fde1e780d59
[ 69.616751][ T5233] RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000
[ 69.624722][ T5233] RBP: 0000000000000000 R08: 0000000020000100 R09: 00007ffcd2b16e20
[ 69.632693][ T5233] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd2b16e20
[ 69.640664][ T5233] R13: 00007ffcd2b170a8 R14: 431bde82d7b634db R15: 00007fde1e7c903b
[ 69.648647][ T5233]
[ 69.652764][ T5233] overlayfs: upper fs does not support tmpfile.
[pid 5233] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5233] exit_group(0) = ?
[pid 5233] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5233, 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)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5237 attached
, child_tidptr=0x55556016c750) = 5237
[ 69.660412][ T5233] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 69.668171][ T5233] overlayfs: upper fs missing required features.
[pid 5237] set_robust_list(0x55556016c760, 24) = 0
[pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5237] setpgid(0, 0) = 0
[pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5237] write(3, "1000", 4) = 4
[pid 5237] close(3) = 0
executing program
[pid 5237] write(1, "executing program\n", 18) = 18
[pid 5237] memfd_create("syzkaller", 0) = 3
[pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5237] 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 5237] munmap(0x7fde16200000, 138412032) = 0
[pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5237] close(3) = 0
[pid 5237] memfd_create("syzkaller", 0) = 3
[pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5237] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5237] munmap(0x7fde16200000, 138412032) = 0
[pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5237] close(3) = 0
[pid 5237] mkdir("./file2", 0777) = 0
[pid 5237] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5237] mkdir("./file0", 0777) = 0
[pid 5237] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5237] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = 0
[pid 5237] exit_group(0) = ?
[pid 5237] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, 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 5238 attached
[pid 5238] set_robust_list(0x55556016c760, 24
[pid 5232] <... clone resumed>, child_tidptr=0x55556016c750) = 5238
[pid 5238] <... set_robust_list resumed>) = 0
[pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5238] setpgid(0, 0) = 0
[pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5238] write(3, "1000", 4) = 4
[pid 5238] close(3) = 0
[pid 5238] write(1, "executing program\n", 18executing program
) = 18
[pid 5238] memfd_create("syzkaller", 0) = 3
[pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5238] 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 5238] munmap(0x7fde16200000, 138412032) = 0
[pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5238] close(3) = 0
[pid 5238] memfd_create("syzkaller", 0) = 3
[pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5238] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5238] munmap(0x7fde16200000, 138412032) = 0
[pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5238] close(3) = 0
[pid 5238] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5238] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5238] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5238] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5238] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5238] exit_group(0) = ?
[pid 5238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, 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)
[ 70.337011][ T5238] 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 5239 attached
, child_tidptr=0x55556016c750) = 5239
[pid 5239] set_robust_list(0x55556016c760, 24) = 0
[pid 5239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5239] setpgid(0, 0) = 0
[pid 5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5239] write(3, "1000", 4) = 4
[pid 5239] close(3) = 0
executing program
[pid 5239] write(1, "executing program\n", 18) = 18
[pid 5239] memfd_create("syzkaller", 0) = 3
[pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5239] 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 5239] munmap(0x7fde16200000, 138412032) = 0
[pid 5239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5239] close(3) = 0
[pid 5239] memfd_create("syzkaller", 0) = 3
[pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5239] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5239] munmap(0x7fde16200000, 138412032) = 0
[pid 5239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5239] close(3) = 0
[pid 5239] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5239] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5239] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5239] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5239] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5239] exit_group(0) = ?
[pid 5239] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5239, si_uid=0, si_status=0, si_utime=2 /* 0.02 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 5240 attached
, child_tidptr=0x55556016c750) = 5240
[ 70.660774][ T5239] overlay: filesystem on ./file0 not supported as upperdir
[pid 5240] set_robust_list(0x55556016c760, 24) = 0
[pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5240] setpgid(0, 0) = 0
[pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5240] write(3, "1000", 4) = 4
[pid 5240] close(3) = 0
executing program
[pid 5240] write(1, "executing program\n", 18) = 18
[pid 5240] memfd_create("syzkaller", 0) = 3
[pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5240] 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 5240] munmap(0x7fde16200000, 138412032) = 0
[pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5240] close(3) = 0
[pid 5240] memfd_create("syzkaller", 0) = 3
[pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5240] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5240] munmap(0x7fde16200000, 138412032) = 0
[pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5240] close(3) = 0
[pid 5240] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5240] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5240] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5240] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5240] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5240] exit_group(0) = ?
[pid 5240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, 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 5241 attached
, child_tidptr=0x55556016c750) = 5241
[ 71.046665][ T5240] overlay: filesystem on ./file0 not supported as upperdir
[pid 5241] set_robust_list(0x55556016c760, 24) = 0
[pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5241] setpgid(0, 0) = 0
[pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5241] write(3, "1000", 4) = 4
[pid 5241] close(3) = 0
[pid 5241] write(1, "executing program\n", 18executing program
) = 18
[pid 5241] memfd_create("syzkaller", 0) = 3
[pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5241] 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 5241] munmap(0x7fde16200000, 138412032) = 0
[pid 5241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5241] close(3) = 0
[pid 5241] memfd_create("syzkaller", 0) = 3
[pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5241] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5241] munmap(0x7fde16200000, 138412032) = 0
[pid 5241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5241] close(3) = 0
[pid 5241] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5241] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5241] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5241] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5241] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5241] exit_group(0) = ?
[pid 5241] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, 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 5242 attached
, child_tidptr=0x55556016c750) = 5242
[pid 5242] set_robust_list(0x55556016c760, 24) = 0
[pid 5242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 71.449417][ T5241] overlay: filesystem on ./file0 not supported as upperdir
[pid 5242] setpgid(0, 0) = 0
[pid 5242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5242] write(3, "1000", 4) = 4
[pid 5242] close(3) = 0
[pid 5242] write(1, "executing program\n", 18executing program
) = 18
[pid 5242] memfd_create("syzkaller", 0) = 3
[pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5242] 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 5242] munmap(0x7fde16200000, 138412032) = 0
[pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5242] close(3) = 0
[pid 5242] memfd_create("syzkaller", 0) = 3
[pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5242] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5242] munmap(0x7fde16200000, 138412032) = 0
[pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5242] close(3) = 0
[pid 5242] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5242] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5242] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5242] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5242] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5242] exit_group(0) = ?
[pid 5242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5242, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 71.838599][ T5242] 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 5243 attached
, child_tidptr=0x55556016c750) = 5243
[pid 5243] set_robust_list(0x55556016c760, 24) = 0
[pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5243] setpgid(0, 0) = 0
[pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5243] write(3, "1000", 4) = 4
[pid 5243] close(3) = 0
executing program
[pid 5243] write(1, "executing program\n", 18) = 18
[pid 5243] memfd_create("syzkaller", 0) = 3
[pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5243] 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 5243] munmap(0x7fde16200000, 138412032) = 0
[pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5243] close(3) = 0
[pid 5243] memfd_create("syzkaller", 0) = 3
[pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5243] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5243] munmap(0x7fde16200000, 138412032) = 0
[pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5243] close(3) = 0
[pid 5243] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5243] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5243] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5243] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5243] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5243] exit_group(0) = ?
[pid 5243] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, 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 5244 attached
, child_tidptr=0x55556016c750) = 5244
[pid 5244] set_robust_list(0x55556016c760, 24) = 0
[pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5244] setpgid(0, 0) = 0
[pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5244] write(3, "1000", 4) = 4
[pid 5244] close(3) = 0
executing program
[pid 5244] write(1, "executing program\n", 18) = 18
[pid 5244] memfd_create("syzkaller", 0) = 3
[ 72.168837][ T5243] overlay: filesystem on ./file0 not supported as upperdir
[pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5244] 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 5244] munmap(0x7fde16200000, 138412032) = 0
[pid 5244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5244] close(3) = 0
[pid 5244] memfd_create("syzkaller", 0) = 3
[pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5244] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5244] munmap(0x7fde16200000, 138412032) = 0
[pid 5244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5244] close(3) = 0
[pid 5244] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5244] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5244] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5244] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5244] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5244] exit_group(0) = ?
[pid 5244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=15 /* 0.15 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 72.492308][ T5244] 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 5245 attached
, child_tidptr=0x55556016c750) = 5245
[pid 5245] set_robust_list(0x55556016c760, 24) = 0
[pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5245] setpgid(0, 0) = 0
[pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5245] write(3, "1000", 4) = 4
[pid 5245] close(3) = 0
[pid 5245] write(1, "executing program\n", 18executing program
) = 18
[pid 5245] memfd_create("syzkaller", 0) = 3
[pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5245] 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 5245] munmap(0x7fde16200000, 138412032) = 0
[pid 5245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5245] close(3) = 0
[pid 5245] memfd_create("syzkaller", 0) = 3
[pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5245] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5245] munmap(0x7fde16200000, 138412032) = 0
[pid 5245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5245] close(3) = 0
[pid 5245] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5245] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5245] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5245] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5245] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5245] exit_group(0) = ?
[pid 5245] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5245, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5246 attached
, child_tidptr=0x55556016c750) = 5246
[ 72.850423][ T5245] overlay: filesystem on ./file0 not supported as upperdir
[pid 5246] set_robust_list(0x55556016c760, 24) = 0
[pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5246] setpgid(0, 0) = 0
[pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5246] write(3, "1000", 4) = 4
[pid 5246] close(3) = 0
executing program
[pid 5246] write(1, "executing program\n", 18) = 18
[pid 5246] memfd_create("syzkaller", 0) = 3
[pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5246] 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 5246] munmap(0x7fde16200000, 138412032) = 0
[pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5246] close(3) = 0
[pid 5246] memfd_create("syzkaller", 0) = 3
[pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5246] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5246] munmap(0x7fde16200000, 138412032) = 0
[pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5246] close(3) = 0
[pid 5246] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5246] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5246] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5246] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5246] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5246] exit_group(0) = ?
[pid 5246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, 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 5247 attached
, child_tidptr=0x55556016c750) = 5247
[pid 5247] set_robust_list(0x55556016c760, 24) = 0
[pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5247] setpgid(0, 0) = 0
[pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5247] write(3, "1000", 4) = 4
[pid 5247] close(3) = 0
executing program
[pid 5247] write(1, "executing program\n", 18) = 18
[ 73.227726][ T5246] overlay: filesystem on ./file0 not supported as upperdir
[pid 5247] memfd_create("syzkaller", 0) = 3
[pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5247] 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 5247] munmap(0x7fde16200000, 138412032) = 0
[pid 5247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5247] close(3) = 0
[pid 5247] memfd_create("syzkaller", 0) = 3
[pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5247] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5247] munmap(0x7fde16200000, 138412032) = 0
[pid 5247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5247] close(3) = 0
[pid 5247] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5247] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5247] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5247] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5247] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5247] exit_group(0) = ?
[pid 5247] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=5 /* 0.05 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 5248 attached
, child_tidptr=0x55556016c750) = 5248
[pid 5248] set_robust_list(0x55556016c760, 24) = 0
[pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5248] setpgid(0, 0) = 0
[pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5248] write(3, "1000", 4) = 4
[ 73.542587][ T5247] overlay: filesystem on ./file0 not supported as upperdir
[pid 5248] close(3) = 0
executing program
[pid 5248] write(1, "executing program\n", 18) = 18
[pid 5248] memfd_create("syzkaller", 0) = 3
[pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5248] 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 5248] munmap(0x7fde16200000, 138412032) = 0
[pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5248] close(3) = 0
[pid 5248] memfd_create("syzkaller", 0) = 3
[pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5248] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5248] munmap(0x7fde16200000, 138412032) = 0
[pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5248] close(3) = 0
[pid 5248] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5248] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5248] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5248] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5248] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5248] exit_group(0) = ?
[pid 5248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5248, si_uid=0, si_status=0, si_utime=3 /* 0.03 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 5249 attached
, child_tidptr=0x55556016c750) = 5249
[ 73.946168][ T5248] overlay: filesystem on ./file0 not supported as upperdir
[pid 5249] set_robust_list(0x55556016c760, 24) = 0
[pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5249] setpgid(0, 0) = 0
[pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5249] write(3, "1000", 4) = 4
[pid 5249] close(3) = 0
[pid 5249] write(1, "executing program\n", 18executing program
) = 18
[pid 5249] memfd_create("syzkaller", 0) = 3
[pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5249] 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 5249] munmap(0x7fde16200000, 138412032) = 0
[pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5249] close(3) = 0
[pid 5249] memfd_create("syzkaller", 0) = 3
[pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5249] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5249] munmap(0x7fde16200000, 138412032) = 0
[pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5249] close(3) = 0
[pid 5249] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5249] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5249] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5249] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5249] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5249] exit_group(0) = ?
[pid 5249] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, 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 5250 attached
, child_tidptr=0x55556016c750) = 5250
[ 74.377687][ T5249] overlay: filesystem on ./file0 not supported as upperdir
[pid 5250] set_robust_list(0x55556016c760, 24) = 0
[pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5250] setpgid(0, 0) = 0
[pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5250] write(3, "1000", 4) = 4
[pid 5250] close(3) = 0
[pid 5250] write(1, "executing program\n", 18executing program
) = 18
[pid 5250] memfd_create("syzkaller", 0) = 3
[pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5250] 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 5250] munmap(0x7fde16200000, 138412032) = 0
[pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5250] close(3) = 0
[pid 5250] memfd_create("syzkaller", 0) = 3
[pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5250] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5250] munmap(0x7fde16200000, 138412032) = 0
[pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5250] close(3) = 0
[pid 5250] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5250] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5250] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5250] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5250] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5250] exit_group(0) = ?
[pid 5250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 74.773691][ T5250] 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 5251 attached
, child_tidptr=0x55556016c750) = 5251
[pid 5251] set_robust_list(0x55556016c760, 24) = 0
[pid 5251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5251] setpgid(0, 0) = 0
[pid 5251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5251] write(3, "1000", 4) = 4
[pid 5251] close(3) = 0
[pid 5251] write(1, "executing program\n", 18executing program
) = 18
[pid 5251] memfd_create("syzkaller", 0) = 3
[pid 5251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5251] 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 5251] munmap(0x7fde16200000, 138412032) = 0
[pid 5251] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5251] close(3) = 0
[pid 5251] memfd_create("syzkaller", 0) = 3
[pid 5251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5251] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5251] munmap(0x7fde16200000, 138412032) = 0
[pid 5251] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5251] close(3) = 0
[pid 5251] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5251] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5251] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5251] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5251] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5251] exit_group(0) = ?
[pid 5251] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5251, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=15 /* 0.15 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 75.207283][ T5251] 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 5252 attached
, child_tidptr=0x55556016c750) = 5252
[pid 5252] set_robust_list(0x55556016c760, 24) = 0
[pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5252] setpgid(0, 0) = 0
[pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5252] write(3, "1000", 4) = 4
[pid 5252] close(3) = 0
[pid 5252] write(1, "executing program\n", 18executing program
) = 18
[pid 5252] memfd_create("syzkaller", 0) = 3
[pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5252] 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 5252] munmap(0x7fde16200000, 138412032) = 0
[pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5252] close(3) = 0
[pid 5252] memfd_create("syzkaller", 0) = 3
[pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5252] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5252] munmap(0x7fde16200000, 138412032) = 0
[pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5252] close(3) = 0
[pid 5252] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5252] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5252] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5252] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5252] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5252] exit_group(0) = ?
[pid 5252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, 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)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5253 attached
, child_tidptr=0x55556016c750) = 5253
[pid 5253] set_robust_list(0x55556016c760, 24) = 0
[pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 75.612543][ T5252] overlay: filesystem on ./file0 not supported as upperdir
[pid 5253] setpgid(0, 0) = 0
[pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5253] write(3, "1000", 4) = 4
[pid 5253] close(3) = 0
executing program
[pid 5253] write(1, "executing program\n", 18) = 18
[pid 5253] memfd_create("syzkaller", 0) = 3
[pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5253] 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 5253] munmap(0x7fde16200000, 138412032) = 0
[pid 5253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5253] close(3) = 0
[pid 5253] memfd_create("syzkaller", 0) = 3
[pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5253] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5253] munmap(0x7fde16200000, 138412032) = 0
[pid 5253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5253] close(3) = 0
[pid 5253] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5253] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5253] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5253] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5253] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5253] exit_group(0) = ?
[pid 5253] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5253, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 76.009655][ T5253] 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 5254 attached
, child_tidptr=0x55556016c750) = 5254
[pid 5254] set_robust_list(0x55556016c760, 24) = 0
[pid 5254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5254] setpgid(0, 0) = 0
[pid 5254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5254] write(3, "1000", 4) = 4
[pid 5254] close(3) = 0
[pid 5254] write(1, "executing program\n", 18executing program
) = 18
[pid 5254] memfd_create("syzkaller", 0) = 3
[pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5254] 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 5254] munmap(0x7fde16200000, 138412032) = 0
[pid 5254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5254] close(3) = 0
[pid 5254] memfd_create("syzkaller", 0) = 3
[pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5254] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5254] munmap(0x7fde16200000, 138412032) = 0
[pid 5254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5254] close(3) = 0
[pid 5254] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5254] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5254] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5254] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5254] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5254] exit_group(0) = ?
[pid 5254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5254, 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)
[ 76.362663][ T5254] 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 5255 attached
, child_tidptr=0x55556016c750) = 5255
[pid 5255] set_robust_list(0x55556016c760, 24) = 0
[pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5255] setpgid(0, 0) = 0
[pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5255] write(3, "1000", 4) = 4
[pid 5255] close(3) = 0
executing program
[pid 5255] write(1, "executing program\n", 18) = 18
[pid 5255] memfd_create("syzkaller", 0) = 3
[pid 5255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5255] 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 5255] munmap(0x7fde16200000, 138412032) = 0
[pid 5255] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5255] close(3) = 0
[pid 5255] memfd_create("syzkaller", 0) = 3
[pid 5255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5255] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5255] munmap(0x7fde16200000, 138412032) = 0
[pid 5255] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5255] close(3) = 0
[pid 5255] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5255] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5255] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5255] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5255] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5255] exit_group(0) = ?
[pid 5255] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5255, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=11 /* 0.11 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5256 attached
, child_tidptr=0x55556016c750) = 5256
[pid 5256] set_robust_list(0x55556016c760, 24) = 0
[pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 76.687994][ T5255] overlay: filesystem on ./file0 not supported as upperdir
[pid 5256] setpgid(0, 0) = 0
[pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5256] write(3, "1000", 4) = 4
[pid 5256] close(3) = 0
[pid 5256] write(1, "executing program\n", 18executing program
) = 18
[pid 5256] memfd_create("syzkaller", 0) = 3
[pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5256] 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 5256] munmap(0x7fde16200000, 138412032) = 0
[pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5256] close(3) = 0
[pid 5256] memfd_create("syzkaller", 0) = 3
[pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5256] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5256] munmap(0x7fde16200000, 138412032) = 0
[pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5256] close(3) = 0
[pid 5256] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5256] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5256] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5256] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5256] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5256] exit_group(0) = ?
[pid 5256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, 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)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5257 attached
, child_tidptr=0x55556016c750) = 5257
[ 77.048543][ T5256] overlay: filesystem on ./file0 not supported as upperdir
[pid 5257] set_robust_list(0x55556016c760, 24) = 0
[pid 5257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5257] setpgid(0, 0) = 0
[pid 5257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5257] write(3, "1000", 4) = 4
[pid 5257] close(3) = 0
[pid 5257] write(1, "executing program\n", 18executing program
) = 18
[pid 5257] memfd_create("syzkaller", 0) = 3
[pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5257] 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 5257] munmap(0x7fde16200000, 138412032) = 0
[pid 5257] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5257] close(3) = 0
[pid 5257] memfd_create("syzkaller", 0) = 3
[pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5257] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5257] munmap(0x7fde16200000, 138412032) = 0
[pid 5257] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5257] close(3) = 0
[pid 5257] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5257] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5257] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5257] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5257] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5257] exit_group(0) = ?
[pid 5257] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5257, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5258 attached
, child_tidptr=0x55556016c750) = 5258
[pid 5258] set_robust_list(0x55556016c760, 24) = 0
[pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5258] setpgid(0, 0) = 0
[pid 5258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5258] write(3, "1000", 4) = 4
[pid 5258] close(3) = 0
[pid 5258] write(1, "executing program\n", 18executing program
) = 18
[pid 5258] memfd_create("syzkaller", 0) = 3
[ 77.466808][ T5257] overlay: filesystem on ./file0 not supported as upperdir
[pid 5258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5258] 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 5258] munmap(0x7fde16200000, 138412032) = 0
[pid 5258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5258] close(3) = 0
[pid 5258] memfd_create("syzkaller", 0) = 3
[pid 5258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5258] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5258] munmap(0x7fde16200000, 138412032) = 0
[pid 5258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5258] close(3) = 0
[pid 5258] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5258] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5258] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5258] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5258] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5258] exit_group(0) = ?
[pid 5258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5258, si_uid=0, si_status=0, si_utime=2 /* 0.02 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 5259 attached
, child_tidptr=0x55556016c750) = 5259
[ 77.809680][ T5258] overlay: filesystem on ./file0 not supported as upperdir
[pid 5259] set_robust_list(0x55556016c760, 24) = 0
[pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5259] setpgid(0, 0) = 0
[pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5259] write(3, "1000", 4) = 4
[pid 5259] close(3) = 0
[pid 5259] write(1, "executing program\n", 18executing program
) = 18
[pid 5259] memfd_create("syzkaller", 0) = 3
[pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5259] 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 5259] munmap(0x7fde16200000, 138412032) = 0
[pid 5259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5259] close(3) = 0
[pid 5259] memfd_create("syzkaller", 0) = 3
[pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5259] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5259] munmap(0x7fde16200000, 138412032) = 0
[pid 5259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5259] close(3) = 0
[pid 5259] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5259] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5259] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5259] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5259] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5259] exit_group(0) = ?
[pid 5259] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5259, si_uid=0, si_status=0, si_utime=3 /* 0.03 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 5260 attached
[ 78.172401][ T5259] overlay: filesystem on ./file0 not supported as upperdir
, child_tidptr=0x55556016c750) = 5260
[pid 5260] set_robust_list(0x55556016c760, 24) = 0
[pid 5260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5260] setpgid(0, 0) = 0
[pid 5260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5260] write(3, "1000", 4) = 4
[pid 5260] close(3executing program
) = 0
[pid 5260] write(1, "executing program\n", 18) = 18
[pid 5260] memfd_create("syzkaller", 0) = 3
[pid 5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5260] 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 5260] munmap(0x7fde16200000, 138412032) = 0
[pid 5260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5260] close(3) = 0
[pid 5260] memfd_create("syzkaller", 0) = 3
[pid 5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fde16200000
[pid 5260] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5260] munmap(0x7fde16200000, 138412032) = 0
[pid 5260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5260] close(3) = 0
[pid 5260] mkdir("./file2", 0777) = -1 EEXIST (File exists)
[pid 5260] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5260] mkdir("./file0", 0777) = -1 EEXIST (File exists)
[pid 5260] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid 5260] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument)
[pid 5260] exit_group(0) = ?
[pid 5260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5260, 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)