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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888054af3e30, owner = 0x0, curr 0xffff88807d8d8000, list empty
WARNING: CPU: 1 PID: 8550 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 1 PID: 8550 at kernel/locking/rwsem.c:1372 up_write+0x3a1/0x420 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 1 PID: 8550 Comm: syz.9.916 Not tainted 6.1.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__up_write kernel/locking/rwsem.c:1371 [inline]
RIP: 0010:up_write+0x3a1/0x420 kernel/locking/rwsem.c:1626
Code: 44 d0 48 c7 c7 e0 f7 8b 8a 48 c7 c6 20 fa 8b 8a 48 8b 14 24 4c 89 f1 4d 89 e0 4c 8b 4c 24 08 41 52 e8 e3 89 ea ff 48 83 c4 08 <0f> 0b e9 6b fd ff ff 48 c7 c1 68 80 1f 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000362f8b0 EFLAGS: 00010292
RAX: ca61dbefd86a2d00 RBX: ffff888054af3e30 RCX: 0000000000080000
RDX: ffffc9000f0ea000 RSI: 000000000000e238 RDI: 000000000000e239
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffff520006c5ea5
R10: fffff520006c5ea5 R11: 1ffff920006c5ea4 R12: 0000000000000000
R13: ffff888054af3e88 R14: ffff888054af3e30 R15: 1ffff1100a95e7c7
FS:  00007fa54d7fc6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000032000 CR3: 0000000078ccf000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:763 [inline]
 unlock_rename+0x3f/0xb0 fs/namei.c:3087
 ovl_workdir_ok fs/overlayfs/super.c:984 [inline]
 ovl_get_workdir+0x1d8/0x1540 fs/overlayfs/super.c:1519
 ovl_fill_super+0x1925/0x2ae0 fs/overlayfs/super.c:2095
 mount_nodev+0x52/0xe0 fs/super.c:1489
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3063
 do_mount fs/namespace.c:3406 [inline]
 __do_sys_mount fs/namespace.c:3614 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3591
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa54c98eb69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa54d7fc038 EFLAGS: 00000246
 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa54cbb6080 RCX: 00007fa54c98eb69
RDX: 0000200000000b80 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007fa54ca11df1 R08: 0000200000000080 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa54cbb6080 R15: 00007ffcda2ef038
 </TASK>