------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff8880622c5450, owner = 0x0, curr 0xffff888022088000, list empty WARNING: CPU: 1 PID: 5441 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline] WARNING: CPU: 1 PID: 5441 at kernel/locking/rwsem.c:1370 up_write+0x502/0x590 kernel/locking/rwsem.c:1632 Modules linked in: CPU: 1 PID: 5441 Comm: syz-executor.4 Not tainted 6.9.0-rc2-next-20240404-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline] RIP: 0010:up_write+0x502/0x590 kernel/locking/rwsem.c:1632 Code: c7 c7 c0 c9 ca 8b 48 c7 c6 40 cc ca 8b 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 33 d1 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 c0 2f ac 8f 80 e1 07 80 c1 03 RSP: 0018:ffffc90005adfc60 EFLAGS: 00010296 RAX: a811c0ffc5ac9200 RBX: ffffffff8bcacaa0 RCX: 0000000000040000 RDX: ffffc9000c25b000 RSI: 0000000000006ea4 RDI: 0000000000006ea5 RBP: ffffc90005adfd30 R08: ffffffff81581632 R09: 1ffff110172a519a R10: dffffc0000000000 R11: ffffed10172a519b R12: 0000000000000000 R13: ffff8880622c5450 R14: 1ffff92000b5bf94 R15: dffffc0000000000 FS: 00007fada23606c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe6d8f6098 CR3: 000000002436a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_unlock include/linux/fs.h:791 [inline] unlock_mount fs/namespace.c:2514 [inline] do_new_mount_fc fs/namespace.c:3295 [inline] do_new_mount+0x88e/0xb40 fs/namespace.c:3354 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a RIP: 0033:0x7fada167de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fada23600c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fada17ac050 RCX: 00007fada167de69 RDX: 0000000020000040 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00007fada16ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fada17ac050 R15: 00007ffff2cf6dc8