DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88804dcb80d8, owner = 0x0, curr 0xffff88802ad98000, list empty
WARNING: CPU: 1 PID: 8533 at kernel/locking/rwsem.c:1368 __up_write kernel/locking/rwsem.c:1367 [inline]
WARNING: CPU: 1 PID: 8533 at kernel/locking/rwsem.c:1368 up_write+0x506/0x590 kernel/locking/rwsem.c:1630
Modules linked in:
CPU: 1 UID: 0 PID: 8533 Comm: syz.5.627 Not tainted 6.15.0-rc1-next-20250410-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__up_write kernel/locking/rwsem.c:1367 [inline]
RIP: 0010:up_write+0x506/0x590 kernel/locking/rwsem.c:1630
Code: c7 c7 00 de 4a 8c 48 c7 c6 20 e0 4a 8c 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 df 01 e4 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 64 6b 60 90 80 e1 07 80 c1 03
RSP: 0018:ffffc90003f5fbe0 EFLAGS: 00010292
RAX: 5101ff3992684300 RBX: ffffffff8c4adee0 RCX: 0000000000080000
RDX: ffffc9001bfea000 RSI: 0000000000006ea0 RDI: 0000000000006ea1
RBP: ffffc90003f5fcb0 R08: ffffffff818291d2 R09: fffffbfff1d7ab00
R10: dffffc0000000000 R11: fffffbfff1d7ab00 R12: 0000000000000000
R13: ffff88804dcb80d8 R14: 1ffff920007ebf84 R15: dffffc0000000000
FS: 00007f8e152776c0(0000) GS:ffff888125080000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a4f039f98 CR3: 0000000069c4e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
inode_unlock include/linux/fs.h:871 [inline]
chmod_common+0x2ba/0x4c0 fs/open.c:647
do_fchmodat fs/open.c:690 [inline]
__do_sys_chmod fs/open.c:714 [inline]
__se_sys_chmod fs/open.c:712 [inline]
__x64_sys_chmod+0x100/0x1a0 fs/open.c:712
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8e1438d169
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:00007f8e15277038 EFLAGS: 00000246 ORIG_RAX: 000000000000005a
RAX: ffffffffffffffda RBX: 00007f8e145a6080 RCX: 00007f8e1438d169
RDX: 0000000000000000 RSI: 000000000000023f RDI: 0000200000000180
RBP: 00007f8e1440e990 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8e145a6080 R15: 00007ffe3b28f998
</TASK>