WARNING: CPU: 1 PID: 5276 at kernel/locking/rwsem.c:1350 __up_write kernel/locking/rwsem.c:1349 [inline]
WARNING: CPU: 1 PID: 5276 at kernel/locking/rwsem.c:1350 up_write+0x397/0x410 kernel/locking/rwsem.c:1604
Modules linked in:
CPU: 1 PID: 5276 Comm: syz.2.39 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__up_write kernel/locking/rwsem.c:1349 [inline]
RIP: 0010:up_write+0x397/0x410 kernel/locking/rwsem.c:1604
Code: 4c 0f 44 d0 48 c7 c7 60 1f 2b 8a 48 c7 c6 20 22 2b 8a 48 8b 14 24 4c 89 f1 4d 89 e0 4d 89 f9 41 52 e8 9d 26 59 08 48 83 c4 08 <0f> 0b e9 70 fd ff ff 48 c7 c1 88 42 8b 8d 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900035cf6d8 EFLAGS: 00010286
RAX: 682db34746e9e100 RBX: ffff88806f1591f0 RCX: ffff888026cc0000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffff8880b9133d7f R09: 1ffff110172267af
R10: dffffc0000000000 R11: ffffed10172267b0 R12: 0000000000000000
R13: ffff88806f159248 R14: ffff88806f1591f0 R15: ffff888026cc0000
FS:  00007f3a38e556c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd4bf887000 CR3: 000000007ebfe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:798 [inline]
 ovl_workdir_create+0x58d/0x640 fs/overlayfs/super.c:839
 ovl_make_workdir fs/overlayfs/super.c:1376 [inline]
 ovl_get_workdir+0x38f/0x12a0 fs/overlayfs/super.c:1526
 ovl_fill_super+0x1cd4/0x42a0 fs/overlayfs/super.c:2082
 mount_nodev+0x52/0xe0 fs/super.c:1457
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1541
 do_new_mount+0x247/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3a39814819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3a38e55028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f3a39a8e090 RCX: 00007f3a39814819
RDX: 0000200000000440 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007f3a398aac91 R08: 0000200000000080 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3a39a8e128 R14: 00007f3a39a8e090 R15: 00007ffcddaf0418
 </TASK>