EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. ===================================== WARNING: bad unlock balance detected! 6.2.0-next-20230303-syzkaller #0 Not tainted ------------------------------------- syz-executor.1/5899 is trying to release lock (&type->i_mutex_dir_key) at: [] inode_unlock include/linux/fs.h:763 [inline] [] ext4_rename+0x14aa/0x26d0 fs/ext4/namei.c:4017 but there are no more locks to release! other info that might help us debug this: 2 locks held by syz-executor.1/5899: #0: ffff888082d7c460 (sb_writers#4){.+.+}-{0:0}, at: do_renameat2+0x37f/0xc90 fs/namei.c:4859 #1: ffff888096f44a38 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff888096f44a38 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename+0x229/0x280 fs/namei.c:2991 stack backtrace: CPU: 1 PID: 5899 Comm: syz-executor.1 Not tainted 6.2.0-next-20230303-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 __lock_release kernel/locking/lockdep.c:5346 [inline] lock_release+0x55c/0x780 kernel/locking/lockdep.c:5689 up_write+0x2a/0x520 kernel/locking/rwsem.c:1625 inode_unlock include/linux/fs.h:763 [inline] ext4_rename+0x14aa/0x26d0 fs/ext4/namei.c:4017 ext4_rename2+0x1c7/0x270 fs/ext4/namei.c:4193 vfs_rename+0xef6/0x17a0 fs/namei.c:4772 do_renameat2+0xb62/0xc90 fs/namei.c:4923 __do_sys_rename fs/namei.c:4969 [inline] __se_sys_rename fs/namei.c:4967 [inline] __x64_sys_rename+0x81/0xa0 fs/namei.c:4967 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa47e08c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa47ecfe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fa47e1abf80 RCX: 00007fa47e08c0f9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 00000000200000c0 RBP: 00007fa47e0e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd22ceadcf R14: 00007fa47ecfe300 R15: 0000000000022000 ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888098fb2bb0, owner = 0x0, curr 0xffff888020453a80, list empty WARNING: CPU: 0 PID: 5899 at kernel/locking/rwsem.c:1369 __up_write kernel/locking/rwsem.c:1369 [inline] WARNING: CPU: 0 PID: 5899 at kernel/locking/rwsem.c:1369 up_write+0x425/0x520 kernel/locking/rwsem.c:1626 Modules linked in: CPU: 0 PID: 5899 Comm: syz-executor.1 Not tainted 6.2.0-next-20230303-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline] RIP: 0010:up_write+0x425/0x520 kernel/locking/rwsem.c:1626 Code: 3c 02 00 0f 85 da 00 00 00 48 8b 55 00 4d 89 f1 53 4d 89 f8 4c 89 e9 48 c7 c6 00 64 4c 8a 48 c7 c7 20 63 4c 8a e8 db 72 e7 ff <0f> 0b 59 e9 dd fc ff ff 48 89 df e8 eb 6a 72 00 e9 1a fc ff ff 48 RSP: 0018:ffffc900055979b8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffffff8a4c6260 RCX: ffffc90006c63000 RDX: 0000000000040000 RSI: ffffffff814c2c27 RDI: 0000000000000001 RBP: ffff888098fb2bb0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 57525f4755424544 R12: ffff888098fb2bb8 R13: ffff888098fb2bb0 R14: ffff888020453a80 R15: 0000000000000000 FS: 00007fa47ecfe700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4e4d785058 CR3: 000000007977b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_unlock include/linux/fs.h:763 [inline] ext4_rename+0x14aa/0x26d0 fs/ext4/namei.c:4017 ext4_rename2+0x1c7/0x270 fs/ext4/namei.c:4193 vfs_rename+0xef6/0x17a0 fs/namei.c:4772 do_renameat2+0xb62/0xc90 fs/namei.c:4923 __do_sys_rename fs/namei.c:4969 [inline] __se_sys_rename fs/namei.c:4967 [inline] __x64_sys_rename+0x81/0xa0 fs/namei.c:4967 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa47e08c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa47ecfe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fa47e1abf80 RCX: 00007fa47e08c0f9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 00000000200000c0 RBP: 00007fa47e0e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd22ceadcf R14: 00007fa47ecfe300 R15: 0000000000022000