------------[ cut here ]------------
WARNING: CPU: 1 PID: 11849 at fs/overlayfs/util.c:602 ovl_dir_version_inc fs/overlayfs/util.c:602 [inline]
WARNING: CPU: 1 PID: 11849 at fs/overlayfs/util.c:602 ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:620
Modules linked in:
CPU: 1 UID: 0 PID: 11849 Comm: syz.4.3780 Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ovl_dir_version_inc fs/overlayfs/util.c:602 [inline]
RIP: 0010:ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:620
Code: c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 ae 48 99 ff 49 ff 06 5b 41 5c 41 5d 41 5e 41 5f 5d e9 cc 97 4c 03 cc e8 16 db 42 ff <0f> 0b e9 3e ff ff ff e8 0a db 42 ff 0f 0b e9 6e ff ff ff 44 89 f9
RSP: 0018:ffffc900047b7768 EFLAGS: 00010293
RAX: ffffffff8243239a RBX: 0000000000000000 RCX: ffff888115375f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900047b7790 R08: ffff88813885167f R09: 1ffff1102710a2cf
R10: dffffc0000000000 R11: ffffed102710a2d0 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8881388515e0 R15: ffff8881165fccc0
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb8f4aa49a0 CR3: 00000000072a8000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ovl_remove_upper fs/overlayfs/dir.c:841 [inline]
 ovl_do_remove+0x7b8/0xcf0 fs/overlayfs/dir.c:912
 ovl_rmdir+0x1e/0x30 fs/overlayfs/dir.c:945
 vfs_rmdir+0x3dd/0x560 fs/namei.c:4340
 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd5/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x3f1/0x480 fs/namespace.c:1370
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1377
 task_work_run+0x1e0/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9bc/0x2630 kernel/exit.c:953
 do_group_exit+0x22a/0x300 kernel/exit.c:1095
 get_signal+0x139d/0x14f0 kernel/signal.c:2933
 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x58/0xb0 kernel/entry/common.c:218
 ret_from_fork+0x3a/0xa0 arch/x86/kernel/process.c:162
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
RIP: 0033:0x7f9b26d8f6c9
Code: Unable to access opcode bytes at 0x7f9b26d8f69f.
RSP: 002b:00007f9b27bbafe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007f9b26fe6180 RCX: 00007f9b26d8f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000100411
RBP: 00007f9b26e11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f9b26fe6218 R14: 00007f9b26fe6180 R15: 00007ffe03132aa8
 </TASK>
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11849 at fs/overlayfs/util.c:602 ovl_dir_version_inc fs/overlayfs/util.c:602 [inline]
WARNING: CPU: 1 PID: 11849 at fs/overlayfs/util.c:602 ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:620
Modules linked in:
CPU: 1 UID: 0 PID: 11849 Comm: syz.4.3780 Tainted: G        W          syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ovl_dir_version_inc fs/overlayfs/util.c:602 [inline]
RIP: 0010:ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:620
Code: c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 ae 48 99 ff 49 ff 06 5b 41 5c 41 5d 41 5e 41 5f 5d e9 cc 97 4c 03 cc e8 16 db 42 ff <0f> 0b e9 3e ff ff ff e8 0a db 42 ff 0f 0b e9 6e ff ff ff 44 89 f9
RSP: 0018:ffffc900047b7768 EFLAGS: 00010293
RAX: ffffffff8243239a RBX: 0000000000000000 RCX: ffff888115375f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900047b7790 R08: ffff88813885167f R09: 1ffff1102710a2cf
R10: dffffc0000000000 R11: ffffed102710a2d0 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8881388515e0 R15: ffff8881165fccc0
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb8f4aa49a0 CR3: 000000010c378000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ovl_remove_upper fs/overlayfs/dir.c:841 [inline]
 ovl_do_remove+0x7b8/0xcf0 fs/overlayfs/dir.c:912
 ovl_rmdir+0x1e/0x30 fs/overlayfs/dir.c:945
 vfs_rmdir+0x3dd/0x560 fs/namei.c:4340
 incfs_kill_sb+0x1a0/0x230 fs/incfs/vfs.c:1972
 deactivate_locked_super+0xd5/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x3f1/0x480 fs/namespace.c:1370
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1377
 task_work_run+0x1e0/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9bc/0x2630 kernel/exit.c:953
 do_group_exit+0x22a/0x300 kernel/exit.c:1095
 get_signal+0x139d/0x14f0 kernel/signal.c:2933
 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x58/0xb0 kernel/entry/common.c:218
 ret_from_fork+0x3a/0xa0 arch/x86/kernel/process.c:162
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
RIP: 0033:0x7f9b26d8f6c9
Code: Unable to access opcode bytes at 0x7f9b26d8f69f.
RSP: 002b:00007f9b27bbafe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007f9b26fe6180 RCX: 00007f9b26d8f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000100411
RBP: 00007f9b26e11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f9b26fe6218 R14: 00007f9b26fe6180 R15: 00007ffe03132aa8
 </TASK>
---[ end trace 0000000000000000 ]---