WARNING in unlock

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	WARNING in unlock_rename	-1				2	243d	314d	0/3	auto-obsoleted due to no activity on 2026/01/23 04:01
WARNING: CPU: 1 PID: 6339 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 1 PID: 6339 at kernel/locking/rwsem.c:1372 up_write+0x494/0x5bc kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 1 PID: 6339 Comm: syz.2.385 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __up_write kernel/locking/rwsem.c:1371 [inline]
pc : up_write+0x494/0x5bc kernel/locking/rwsem.c:1626
lr : __up_write kernel/locking/rwsem.c:1371 [inline]
lr : up_write+0x494/0x5bc kernel/locking/rwsem.c:1626
sp : ffff800021597590
x29: ffff8000215975a0 x28: ffff800021597680 x27: ffff7000042b2ed0
x26: dfff800000000000 x25: 1fffe00020006c6f x24: ffff000100036368
x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000ce1d3800
x20: ffff000100036310 x19: ffff000100036310 x18: ffff800011babf60
x17: 1fffe00033ea397e x16: ffff8000082d9e48 x15: 0000000040000000
x14: 0000000000000001 x13: 1fffe00033ea6030 x12: 0000000000ff0100
x11: ff0080000a8e1d70 x10: 0000000000000003 x9 : c95ba99978eea200
x8 : c95ba99978eea200 x7 : ffff800008258510 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : ffff800011bada80 x0 : ffff80018a387000
Call trace:
 __up_write kernel/locking/rwsem.c:1371 [inline]
 up_write+0x494/0x5bc kernel/locking/rwsem.c:1626
 inode_unlock include/linux/fs.h:763 [inline]
 unlock_rename+0x48/0xb8 fs/namei.c:3095
 ovl_workdir_ok fs/overlayfs/super.c:984 [inline]
 ovl_get_workdir+0x1e4/0x10bc fs/overlayfs/super.c:1519
 ovl_fill_super+0x1390/0x2240 fs/overlayfs/super.c:2095
 mount_nodev+0x68/0x104 fs/super.c:1489
 ovl_mount+0x3c/0x50 fs/overlayfs/super.c:2186
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x228/0x810 fs/namespace.c:3078
 path_mount+0x5bc/0xe80 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 470
hardirqs last  enabled at (469): [<ffff8000082585a4>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline]
hardirqs last  enabled at (469): [<ffff8000082585a4>] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004
hardirqs last disabled at (470): [<ffff800011a4ebe4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (462): [<ffff8000081acd08>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (462): [<ffff8000081acd08>] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624
softirqs last disabled at (313): [<ffff800008020e4c>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---