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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88811bdaf788, owner = 0x0, curr 0xffff8881206f3880, list empty
WARNING: CPU: 0 PID: 12194 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 0 PID: 12194 at kernel/locking/rwsem.c:1372 up_write+0x173/0x180 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 0 PID: 12194 Comm: syz.6.3562 Not tainted 6.1.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__up_write kernel/locking/rwsem.c:1371 [inline]
RIP: 0010:up_write+0x173/0x180 kernel/locking/rwsem.c:1626
Code: c7 c0 70 a1 85 83 49 c7 c2 28 c4 80 83 4c 0f 44 d0 48 c7 c7 2e a0 9f 83 48 c7 c6 16 e7 96 83 41 52 e8 51 1c 8f 01 48 83 c4 08 <0f> 0b e9 fa fe ff ff 66 0f 1f 44 00 00 41 57 41 56 53 48 83 ec 18
RSP: 0018:ffffc9000254fe20 EFLAGS: 00010292
RAX: de35238a028bfb00 RBX: ffff88811bdaf788 RCX: de35238a028bfb00
RDX: 0000000000000000 RSI: 00000000ffffe39c RDI: 00000000ffffffff
RBP: 000000000000018e R08: 000000000000039c R09: ffffffff83ca4080
R10: 0000000000000ad4 R11: 00000000ffffe39c R12: 000000000000018e
R13: 0000000000000000 R14: ffff88811bdaf788 R15: ffff88811bdaf6a8
FS:  00007fc79a9336c0(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0a405a000 CR3: 0000000120508000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:763 [inline]
 chmod_common+0x138/0x1b0 fs/open.c:609
 do_fchmodat+0x59/0xd0 fs/open.c:645
 __do_sys_chmod fs/open.c:663 [inline]
 __se_sys_chmod fs/open.c:661 [inline]
 __x64_sys_chmod+0x12/0x20 fs/open.c:661
 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: 0033:0x7fc799b8d169
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:00007fc79a933038 EFLAGS: 00000246 ORIG_RAX: 000000000000005a
RAX: ffffffffffffffda RBX: 00007fc799da6080 RCX: 00007fc799b8d169
RDX: 0000000000000000 RSI: 000000000000018e RDI: 0000200000021d00
RBP: 00007fc799c0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc799da6080 R15: 00007ffcf10a19c8
 </TASK>