------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x0, magic = 0xffff88808fa9d450, owner = 0x0, curr 0xffff888027480000, list empty WARNING: CPU: 0 PID: 22615 at kernel/locking/rwsem.c:1343 __up_read+0x5f1/0x750 kernel/locking/rwsem.c:1343 Modules linked in: CPU: 0 PID: 22615 Comm: syz-executor.4 Not tainted 6.5.0-rc7-syzkaller-00168-g7d2f353b2682 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:__up_read+0x5f1/0x750 kernel/locking/rwsem.c:1343 Code: 80 3c 02 00 0f 85 bd 00 00 00 48 8b 13 41 57 4c 89 f1 48 c7 c6 a0 79 6c 8a 4c 8b 4c 24 10 48 c7 c7 40 78 6c 8a e8 5f 2b e7 ff <0f> 0b 59 e9 08 fb ff ff 48 c7 c7 ec db ab 8e 48 89 04 24 e8 87 92 RSP: 0018:ffffc90016677b48 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88808fa9d450 RCX: 0000000000000000 RDX: ffff888027480000 RSI: ffffffff814ccc86 RDI: 0000000000000001 RBP: ffffffff8eabdbec R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 00000000001101b0 R12: ffff88808fa9d458 R13: 1ffff92002ccef6d R14: ffff88808fa9d450 R15: ffffffff8a6c7780 FS: 00007fe1951bc6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0ec630642e CR3: 0000000075fb7000 CR4: 0000000000350ef0 Call Trace: inode_unlock_shared include/linux/fs.h:786 [inline] lookup_slow fs/namei.c:1708 [inline] walk_component+0x354/0x5a0 fs/namei.c:1998 lookup_last fs/namei.c:2455 [inline] path_lookupat+0x17f/0x770 fs/namei.c:2479 filename_lookup+0x1e7/0x5b0 fs/namei.c:2508 user_path_at_empty+0x42/0x60 fs/namei.c:2907 user_path_at include/linux/namei.h:57 [inline] do_mount fs/namespace.c:3672 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x1ff/0x310 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe19e87cae9 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:00007fe1951bc0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fe19e99c120 RCX: 00007fe19e87cae9 RDX: 0000000020000100 RSI: 00000000200001c0 RDI: 00000000200000c0 RBP: 00007fe19e8c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fe19e99c120 R15: 00007ffe142a1c48