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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88804df00a90, owner = 0x0, curr 0xffff888026d60000, list empty
WARNING: CPU: 0 PID: 8104 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 0 PID: 8104 at kernel/locking/rwsem.c:1372 up_write+0x3a1/0x420 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 0 PID: 8104 Comm: syz.3.892 Not tainted 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 80 f6 8b 8a 48 c7 c6 c0 f8 8b 8a 48 8b 14 24 4c 89 f1 4d 89 e0 4c 8b 4c 24 08 41 52 e8 a3 93 ea ff 48 83 c4 08 <0f> 0b e9 6b fd ff ff 48 c7 c1 e8 a5 1f 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900034b7750 EFLAGS: 00010296
RAX: e4ba6ed8895e5300 RBX: ffff88804df00a90 RCX: 0000000000080000
RDX: ffffc90005659000 RSI: 000000000002a9d6 RDI: 000000000002a9d7
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffff52000696e89
R10: fffff52000696e89 R11: 1ffff92000696e88 R12: 0000000000000000
R13: ffff88804df00ae8 R14: ffff88804df00a90 R15: 1ffff11009be0153
FS:  00007ff48c8ca6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000afd000 CR3: 0000000063f9e000 CR4: 00000000003506f0
DR0: fffffffffffffff8 DR1: 0000000000000006 DR2: 0200000000000000
DR3: 0000000000000005 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:763 [inline]
 ovl_workdir_create+0x6e7/0x7a0 fs/overlayfs/super.c:842
 ovl_make_workdir fs/overlayfs/super.c:1389 [inline]
 ovl_get_workdir+0x388/0x1540 fs/overlayfs/super.c:1539
 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:3069
 do_mount fs/namespace.c:3412 [inline]
 __do_sys_mount fs/namespace.c:3620 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3597
 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: 0033:0x7ff48b98ebe9
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:00007ff48c8ca038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff48bbc5fa0 RCX: 00007ff48b98ebe9
RDX: 0000200000000000 RSI: 0000200000000080 RDI: 0000000000000000
RBP: 00007ff48ba11e19 R08: 00002000000002c0 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff48bbc6038 R14: 00007ff48bbc5fa0 R15: 00007ffc4972ccf8
 </TASK>