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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88805908d118, owner = 0x0, curr 0xffff888034721e00, list empty
WARNING: CPU: 0 PID: 7488 at kernel/locking/rwsem.c:1368 __up_write kernel/locking/rwsem.c:1367 [inline]
WARNING: CPU: 0 PID: 7488 at kernel/locking/rwsem.c:1368 up_write+0x502/0x590 kernel/locking/rwsem.c:1630
Modules linked in:
CPU: 0 UID: 0 PID: 7488 Comm: syz.6.300 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__up_write kernel/locking/rwsem.c:1367 [inline]
RIP: 0010:up_write+0x502/0x590 kernel/locking/rwsem.c:1630
Code: c7 c7 c0 8d 0a 8c 48 c7 c6 e0 8f 0a 8c 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 c3 16 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 94 e4 1a 90 80 e1 07 80 c1 03
RSP: 0018:ffffc900042efc60 EFLAGS: 00010296
RAX: ac65ebb7c2669500 RBX: ffffffff8c0a8ea0 RCX: 0000000000080000
RDX: ffffc9000f5a5000 RSI: 00000000000084b9 RDI: 00000000000084ba
RBP: ffffc900042efd30 R08: ffffffff817feaa2 R09: fffffbfff1cfa1a8
R10: dffffc0000000000 R11: fffffbfff1cfa1a8 R12: 0000000000000000
R13: ffff88805908d118 R14: 1ffff9200085df94 R15: dffffc0000000000
FS: 00007fca62c436c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca62c42f98 CR3: 0000000032334000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
inode_unlock include/linux/fs.h:868 [inline]
unlock_mount fs/namespace.c:2710 [inline]
do_move_mount+0x273/0x800 fs/namespace.c:3405
__do_sys_move_mount fs/namespace.c:4324 [inline]
__se_sys_move_mount+0x26b/0xd20 fs/namespace.c:4276
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fca61d85d29
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:00007fca62c43038 EFLAGS: 00000246 ORIG_RAX: 00000000000001ad
RAX: ffffffffffffffda RBX: 00007fca61f76080 RCX: 00007fca61d85d29
RDX: ffffffffffffff9c RSI: 0000000020000140 RDI: 000000000000000a
RBP: 00007fca61e01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fca61f76080 R15: 00007ffc668265f8
</TASK>