F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
CPU: 1 PID: 28978 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
5.0.0-rc3+ #44 Not tainted
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
------------------------------------------------------
Call Trace:
syz-executor4/28975 is trying to acquire lock:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
0000000019360230 (&ovl_i_mutex_dir_key[depth]){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline]
0000000019360230 (&ovl_i_mutex_dir_key[depth]){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687

but task is already holding lock:
00000000526e7d37 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1407 [inline]
00000000526e7d37 (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file.isra.0+0x45d/0x2700 fs/exec.c:1750
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&sig->cred_guard_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:925 [inline]
       __mutex_lock+0x12f/0x1670 kernel/locking/mutex.c:1072
       mutex_lock_killable_nested+0x16/0x20 kernel/locking/mutex.c:1102
 __should_failslab+0x121/0x190 mm/failslab.c:32
       lock_trace+0x4a/0xe0 fs/proc/base.c:384
 should_failslab+0x9/0x14 mm/slab_common.c:1603
       proc_pid_syscall+0x9d/0x4b0 fs/proc/base.c:619
       proc_single_show+0xf6/0x180 fs/proc/base.c:739
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3367 [inline]
 __do_kmalloc mm/slab.c:3709 [inline]
 __kmalloc+0x2dc/0x740 mm/slab.c:3720
       seq_read+0x4db/0x1130 fs/seq_file.c:229
       do_loop_readv_writev fs/read_write.c:700 [inline]
       do_loop_readv_writev fs/read_write.c:687 [inline]
       do_iter_read+0x4a9/0x660 fs/read_write.c:921
       vfs_readv+0x175/0x1c0 fs/read_write.c:983
       do_preadv+0x1c4/0x280 fs/read_write.c:1067
       __do_sys_preadv fs/read_write.c:1117 [inline]
       __se_sys_preadv fs/read_write.c:1112 [inline]
       __x64_sys_preadv+0x9a/0xf0 fs/read_write.c:1112
 kmalloc_array include/linux/slab.h:668 [inline]
 kcalloc include/linux/slab.h:679 [inline]
 ovl_lookup+0x12da/0x29b0 fs/overlayfs/namei.c:881
       do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #2 (&p->lock){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:925 [inline]
       __mutex_lock+0x12f/0x1670 kernel/locking/mutex.c:1072
       mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
       seq_read+0x71/0x1130 fs/seq_file.c:161
       proc_reg_read+0x29a/0x3c0 fs/proc/inode.c:229
       do_loop_readv_writev fs/read_write.c:700 [inline]
       do_loop_readv_writev fs/read_write.c:687 [inline]
       do_iter_read+0x4a9/0x660 fs/read_write.c:921
       vfs_readv+0x175/0x1c0 fs/read_write.c:983
       kernel_readv fs/splice.c:362 [inline]
       default_file_splice_read+0x50c/0xac0 fs/splice.c:417
 __lookup_slow+0x2cd/0x560 fs/namei.c:1671
       do_splice_to+0x12a/0x190 fs/splice.c:880
       splice_direct_to_actor+0x31b/0x9d0 fs/splice.c:957
       do_splice_direct+0x2c7/0x420 fs/splice.c:1066
       do_sendfile+0x61a/0xe60 fs/read_write.c:1436
       __do_sys_sendfile64 fs/read_write.c:1497 [inline]
       __se_sys_sendfile64 fs/read_write.c:1483 [inline]
       __x64_sys_sendfile64+0x1f8/0x240 fs/read_write.c:1483
       do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 lookup_slow+0x58/0x80 fs/namei.c:1688
       entry_SYSCALL_64_after_hwframe+0x49/0xbe
 walk_component+0x8e5/0x26a0 fs/namei.c:1810

-> #1 (sb_writers#4){.+.+}:
       percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
       percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
       __sb_start_write+0x20b/0x360 fs/super.c:1389
       sb_start_write include/linux/fs.h:1602 [inline]
       mnt_want_write+0x3f/0xc0 fs/namespace.c:357
       ovl_want_write+0x76/0xa0 fs/overlayfs/util.c:24
       ovl_do_remove+0x12d/0xee0 fs/overlayfs/dir.c:840
       ovl_rmdir+0x1b/0x20 fs/overlayfs/dir.c:890
       vfs_rmdir fs/namei.c:3879 [inline]
       vfs_rmdir+0x19c/0x470 fs/namei.c:3858
       do_rmdir+0x474/0x580 fs/namei.c:3940
       __do_sys_rmdir fs/namei.c:3958 [inline]
       __se_sys_rmdir fs/namei.c:3956 [inline]
       __x64_sys_rmdir+0x36/0x40 fs/namei.c:3956
       do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #0 (&ovl_i_mutex_dir_key[depth]){++++}:
 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
       lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
       down_read+0x8d/0x120 kernel/locking/rwsem.c:24
       inode_lock_shared include/linux/fs.h:767 [inline]
       lookup_slow+0x4a/0x80 fs/namei.c:1687
       walk_component+0x8e5/0x26a0 fs/namei.c:1810
       link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
       link_path_walk fs/namei.c:2072 [inline]
       path_openat+0x222/0x5650 fs/namei.c:3533
       do_filp_open+0x26f/0x370 fs/namei.c:3564
 link_path_walk fs/namei.c:2072 [inline]
 path_parentat.isra.0+0x51/0x160 fs/namei.c:2366
       do_open_execat+0x20e/0x930 fs/exec.c:856
 filename_parentat.isra.0+0x268/0x580 fs/namei.c:2388
       __do_execve_file.isra.0+0x1966/0x2700 fs/exec.c:1758
       do_execveat_common fs/exec.c:1865 [inline]
       do_execve fs/exec.c:1882 [inline]
       __do_sys_execve fs/exec.c:1963 [inline]
       __se_sys_execve fs/exec.c:1958 [inline]
       __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958
       do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

other info that might help us debug this:

Chain exists of:
  &ovl_i_mutex_dir_key[depth] --> &p->lock --> &sig->cred_guard_mutex

 Possible unsafe locking scenario:

 do_renameat2+0x346/0x1120 fs/namei.c:4551
       CPU0                    CPU1
       ----                    ----
  lock(&sig->cred_guard_mutex);
                               lock(&p->lock);
                               lock(&sig->cred_guard_mutex);
  lock(&ovl_i_mutex_dir_key[depth]);

 *** DEADLOCK ***

1 lock held by syz-executor4/28975:
 #0: 00000000526e7d37 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1407 [inline]
 #0: 00000000526e7d37 (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file.isra.0+0x45d/0x2700 fs/exec.c:1750

stack backtrace:
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f16ca811c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f16ca811c90 RCX: 0000000000458099
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000020000040
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16ca8126d4
R13: 00000000004c4da0 R14: 00000000004d8790 R15: 0000000000000003
CPU: 0 PID: 28975 Comm: syz-executor4 Not tainted 5.0.0-rc3+ #44
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1224
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
 check_prev_add kernel/locking/lockdep.c:1866 [inline]
 check_prevs_add kernel/locking/lockdep.c:1979 [inline]
 validate_chain kernel/locking/lockdep.c:2350 [inline]
 __lock_acquire+0x3014/0x4a30 kernel/locking/lockdep.c:3338
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
 down_read+0x8d/0x120 kernel/locking/rwsem.c:24
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
 inode_lock_shared include/linux/fs.h:767 [inline]
 lookup_slow+0x4a/0x80 fs/namei.c:1687
 walk_component+0x8e5/0x26a0 fs/namei.c:1810
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
 link_path_walk fs/namei.c:2072 [inline]
 path_openat+0x222/0x5650 fs/namei.c:3533
 do_filp_open+0x26f/0x370 fs/namei.c:3564
 do_open_execat+0x20e/0x930 fs/exec.c:856
 __do_execve_file.isra.0+0x1966/0x2700 fs/exec.c:1758
 do_execveat_common fs/exec.c:1865 [inline]
 do_execve fs/exec.c:1882 [inline]
 __do_sys_execve fs/exec.c:1963 [inline]
 __se_sys_execve fs/exec.c:1958 [inline]
 __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3258a73c78 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458099
RDX: 0000000020000680 RSI: 0000000020000540 RDI: 0000000020000200
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3258a746d4
R13: 00000000004be6af R14: 00000000004cee48 R15: 00000000ffffffff
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000cae3f1f0): kobject_uevent_env
kobject: 'loop1' (00000000cae3f1f0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 28997 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
 __should_failslab+0x121/0x190 mm/failslab.c:32
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
 should_failslab+0x9/0x14 mm/slab_common.c:1603
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3367 [inline]
 __do_kmalloc mm/slab.c:3709 [inline]
 __kmalloc+0x2dc/0x740 mm/slab.c:3720
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
 kmalloc include/linux/slab.h:550 [inline]
 kzalloc include/linux/slab.h:740 [inline]
 ovl_alloc_entry+0x25/0x70 fs/overlayfs/util.c:100
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
 ovl_lookup+0xa58/0x29b0 fs/overlayfs/namei.c:1032
kobject: 'loop3' (00000000e6b77fb5): kobject_uevent_env
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
 __lookup_slow+0x2cd/0x560 fs/namei.c:1671
 lookup_slow+0x58/0x80 fs/namei.c:1688
 walk_component+0x8e5/0x26a0 fs/namei.c:1810
 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
kobject: 'loop3' (00000000e6b77fb5): fill_kobj_path: path = '/devices/virtual/block/loop3'
 link_path_walk fs/namei.c:2072 [inline]
 path_parentat.isra.0+0x51/0x160 fs/namei.c:2366
 filename_parentat.isra.0+0x268/0x580 fs/namei.c:2388
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
 do_renameat2+0x346/0x1120 fs/namei.c:4551
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f16ca811c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
RAX: ffffffffffffffda RBX: 00007f16ca811c90 RCX: 0000000000458099
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000020000040
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16ca8126d4
R13: 00000000004c4da0 R14: 00000000004d8790 R15: 0000000000000003
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000cae3f1f0): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop1' (00000000cae3f1f0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (00000000fadb37cc): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (00000000fadb37cc): fill_kobj_path: path = '/devices/virtual/block/loop2'
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
CPU: 0 PID: 29034 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1603
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3367 [inline]
 kmem_cache_alloc+0x2be/0x710 mm/slab.c:3541
 ovl_alloc_inode+0x1c/0x190 fs/overlayfs/super.c:176
 alloc_inode+0x66/0x190 fs/inode.c:210
 iget5_locked fs/inode.c:1126 [inline]
 iget5_locked+0x63/0xe0 fs/inode.c:1119
 ovl_iget5 fs/overlayfs/inode.c:818 [inline]
 ovl_get_inode+0x97c/0xd6d fs/overlayfs/inode.c:850
 ovl_lookup+0xda2/0x29b0 fs/overlayfs/namei.c:1066
 __lookup_slow+0x2cd/0x560 fs/namei.c:1671
 lookup_slow+0x58/0x80 fs/namei.c:1688
 walk_component+0x8e5/0x26a0 fs/namei.c:1810
 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
 link_path_walk fs/namei.c:2072 [inline]
 path_parentat.isra.0+0x51/0x160 fs/namei.c:2366
 filename_parentat.isra.0+0x268/0x580 fs/namei.c:2388
 do_renameat2+0x346/0x1120 fs/namei.c:4551
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f16ca811c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f16ca811c90 RCX: 0000000000458099
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000020000040
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16ca8126d4
R13: 00000000004c4da0 R14: 00000000004d8790 R15: 0000000000000003
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kobject: 'loop2' (00000000fadb37cc): kobject_uevent_env
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
kobject: 'loop2' (00000000fadb37cc): fill_kobj_path: path = '/devices/virtual/block/loop2'
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
overlayfs: filesystem on './file0' not supported as upperdir
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
overlayfs: unrecognized mount option "upperdirš®‡il0" or missing value
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop1' (00000000cae3f1f0): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000cae3f1f0): fill_kobj_path: path = '/devices/virtual/block/loop1'
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 29053 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
overlayfs: unrecognized mount option "upperdirš®‡il0" or missing value
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149
 __should_fail_alloc_page mm/page_alloc.c:3152 [inline]
 should_fail_alloc_page+0x50/0x60 mm/page_alloc.c:3199
 prepare_alloc_pages mm/page_alloc.c:4476 [inline]
 __alloc_pages_nodemask+0x323/0xdc0 mm/page_alloc.c:4523
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1398 [inline]
 cache_grow_begin+0x9c/0x8c0 mm/slab.c:2666
 cache_alloc_refill mm/slab.c:3033 [inline]
 ____cache_alloc mm/slab.c:3116 [inline]
 ____cache_alloc mm/slab.c:3099 [inline]
 __do_cache_alloc mm/slab.c:3338 [inline]
 slab_alloc mm/slab.c:3373 [inline]
 kmem_cache_alloc+0x645/0x710 mm/slab.c:3541
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
 ovl_alloc_inode+0x1c/0x190 fs/overlayfs/super.c:176
 alloc_inode+0x66/0x190 fs/inode.c:210
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
 iget5_locked fs/inode.c:1126 [inline]
 iget5_locked+0x63/0xe0 fs/inode.c:1119
 ovl_iget5 fs/overlayfs/inode.c:818 [inline]
 ovl_get_inode+0x97c/0xd6d fs/overlayfs/inode.c:850
 ovl_lookup+0xda2/0x29b0 fs/overlayfs/namei.c:1066
 __lookup_slow+0x2cd/0x560 fs/namei.c:1671
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
 lookup_slow+0x58/0x80 fs/namei.c:1688
 walk_component+0x8e5/0x26a0 fs/namei.c:1810
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
 link_path_walk fs/namei.c:2072 [inline]
 path_parentat.isra.0+0x51/0x160 fs/namei.c:2366
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
 filename_parentat.isra.0+0x268/0x580 fs/namei.c:2388
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
 do_renameat2+0x346/0x1120 fs/namei.c:4551
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f16ca811c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f16ca811c90 RCX: 0000000000458099
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000020000040
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16ca8126d4
R13: 00000000004c4da0 R14: 00000000004d8790 R15: 0000000000000003
kobject: 'loop3' (00000000e6b77fb5): kobject_uevent_env
kobject: 'loop3' (00000000e6b77fb5): fill_kobj_path: path = '/devices/virtual/block/loop3'
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000cae3f1f0): kobject_uevent_env
kobject: 'loop1' (00000000cae3f1f0): fill_kobj_path: path = '/devices/virtual/block/loop1'
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
CPU: 1 PID: 29075 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1603
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3367 [inline]
 kmem_cache_alloc+0x2be/0x710 mm/slab.c:3541
 kmem_cache_zalloc include/linux/slab.h:730 [inline]
 inode_alloc_security security/selinux/hooks.c:256 [inline]
 selinux_inode_alloc_security+0x108/0x3b0 security/selinux/hooks.c:2768
 security_inode_alloc+0x90/0xe0 security/security.c:472
 inode_init_always+0x662/0xd30 fs/inode.c:168
 alloc_inode+0x83/0x190 fs/inode.c:217
 iget5_locked fs/inode.c:1126 [inline]
 iget5_locked+0x63/0xe0 fs/inode.c:1119
 ovl_iget5 fs/overlayfs/inode.c:818 [inline]
 ovl_get_inode+0x97c/0xd6d fs/overlayfs/inode.c:850
 ovl_lookup+0xda2/0x29b0 fs/overlayfs/namei.c:1066
 __lookup_slow+0x2cd/0x560 fs/namei.c:1671
 lookup_slow+0x58/0x80 fs/namei.c:1688
 walk_component+0x8e5/0x26a0 fs/namei.c:1810
 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
 link_path_walk fs/namei.c:2072 [inline]
 path_parentat.isra.0+0x51/0x160 fs/namei.c:2366
 filename_parentat.isra.0+0x268/0x580 fs/namei.c:2388
 do_renameat2+0x346/0x1120 fs/namei.c:4551
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f16ca811c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f16ca811c90 RCX: 0000000000458099
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000020000040
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16ca8126d4
R13: 00000000004c4da0 R14: 00000000004d8790 R15: 0000000000000003
overlayfs: filesystem on './file0' not supported as upperdir
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
audit: type=1400 audit(1548613021.751:125): avc:  denied  { map } for  pid=29089 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000cae3f1f0): kobject_uevent_env
kobject: 'loop1' (00000000cae3f1f0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000e6b77fb5): kobject_uevent_env
kobject: 'loop3' (00000000e6b77fb5): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 29113 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
kobject: 'loop2' (00000000fadb37cc): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149
kobject: 'loop2' (00000000fadb37cc): fill_kobj_path: path = '/devices/virtual/block/loop2'
overlayfs: filesystem on './file0' not supported as upperdir
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1603
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3367 [inline]
 __do_kmalloc mm/slab.c:3709 [inline]
 __kmalloc+0x2dc/0x740 mm/slab.c:3720
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
 kmalloc include/linux/slab.h:550 [inline]
 kzalloc include/linux/slab.h:740 [inline]
 ovl_alloc_entry+0x25/0x70 fs/overlayfs/util.c:100
 ovl_lookup+0xa58/0x29b0 fs/overlayfs/namei.c:1032
 __lookup_hash+0x122/0x190 fs/namei.c:1546
 do_renameat2+0x749/0x1120 fs/namei.c:4586
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f16ca811c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f16ca811c90 RCX: 0000000000458099
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000020000040
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16ca8126d4
R13: 00000000004c4da0 R14: 00000000004d8790 R15: 0000000000000003
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'loop1' (00000000cae3f1f0): kobject_uevent_env
kobject: 'loop1' (00000000cae3f1f0): fill_kobj_path: path = '/devices/virtual/block/loop1'
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
F2FS-fs (loop0): Wrong segment_count / block_count (22 > 256)
overlayfs: filesystem on './file0' not supported as upperdir
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
CPU: 0 PID: 29134 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
 should_failslab+0x9/0x14 mm/slab_common.c:1603
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3367 [inline]
 kmem_cache_alloc+0x2be/0x710 mm/slab.c:3541
 __d_alloc+0xae/0xbe0 fs/dcache.c:1599
 d_alloc+0x99/0x420 fs/dcache.c:1678
 d_alloc_parallel+0x11b/0x1f10 fs/dcache.c:2421
 __lookup_slow+0x1fa/0x560 fs/namei.c:1654
 lookup_slow+0x58/0x80 fs/namei.c:1688
 lookup_one_len_unlocked+0xf6/0x100 fs/namei.c:2572
 ovl_lookup_single+0x63/0x880 fs/overlayfs/namei.c:205
 ovl_lookup_layer+0x40d/0x4c0 fs/overlayfs/namei.c:285
 ovl_lookup+0x140b/0x29b0 fs/overlayfs/namei.c:895
 __lookup_hash+0x122/0x190 fs/namei.c:1546
 do_renameat2+0x749/0x1120 fs/namei.c:4586
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f16ca811c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f16ca811c90 RCX: 0000000000458099
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000020000040
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16ca8126d4
R13: 00000000004c4da0 R14: 00000000004d8790 R15: 0000000000000003
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000e6b77fb5): kobject_uevent_env
kobject: 'loop3' (00000000e6b77fb5): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000cae3f1f0): kobject_uevent_env
kobject: 'loop1' (00000000cae3f1f0): fill_kobj_path: path = '/devices/virtual/block/loop1'
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop5' (000000009c9a899f): kobject_uevent_env
kobject: 'loop5' (000000009c9a899f): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000a6236570): kobject_uevent_env
kobject: 'loop4' (00000000a6236570): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop2' (00000000fadb37cc): kobject_uevent_env
kobject: 'loop2' (00000000fadb37cc): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (00000000299b739f): kobject_uevent_env
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
overlayfs: unrecognized mount option "upp„rTir=./file0" or missing value
kobject: 'loop0' (00000000299b739f): fill_kobj_path: path = '/devices/virtual/block/loop0'
CPU: 1 PID: 29160 Comm: syz-executor1 Not tainted 5.0.0-rc3+ #44
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
overlayfs: unrecognized mount option "upp„rTir=./file0" or missing value
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x15 lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1603
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3367 [inline]
 kmem_cache_alloc+0x2be/0x710 mm/slab.c:3541
 __d_alloc+0xae/0xbe0 fs/dcache.c:1599
 d_alloc+0x99/0x420 fs/dcache.c:1678
 d_alloc_parallel+0x11b/0x1f10 fs/dcache.c:2421
 __lookup_slow+0x1fa/0x560 fs/namei.c:1654
 lookup_slow+0x58/0x80 fs/namei.c:1688
 lookup_one_len_unlocked+0xf6/0x100 fs/namei.c:2572
 ovl_lookup_single+0x63/0x880 fs/overlayfs/namei.c:205
 ovl_lookup_layer+0x40d/0x4c0 fs/overlayfs/namei.c:285
 ovl_lookup+0x140b/0x29b0 fs/overlayfs/namei.c:895
 __lookup_hash+0x122/0x190 fs/namei.c:1546
 do_renameat2+0x749/0x1120 fs/namei.c:4586
 __do_sys_rename fs/namei.c:4672 [inline]
 __se_sys_rename fs/namei.c:4670 [inline]
 __x64_sys_rename+0x61/0x80 fs/namei.c:4670
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe