(syz.3.122,4297,1):ocfs2_read_blocks:240 ERROR: status = -12
=====================================
WARNING: bad unlock balance detected!
6.1.112-syzkaller #0 Not tainted
-------------------------------------
syz.3.122/4297 is trying to release lock (&oi->ip_io_mutex) at:
[<ffffffff835bbe6f>] ocfs2_read_blocks+0x11ef/0x16e0 fs/ocfs2/buffer_head_io.c:394
but there are no more locks to release!
other info that might help us debug this:
3 locks held by syz.3.122/4297:
#0: ffff88806614a0e0 (&type->s_umount_key#57/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228
#1: ffff88805d175488 (&osb->system_file_mutex){+.+.}-{3:3}, at: ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101
#2: ffff8880606f14a0 (&ocfs2_file_ip_alloc_sem_key){.+.+}-{3:3}, at: ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976
stack backtrace:
CPU: 1 PID: 4297 Comm: syz.3.122 Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_unlock_imbalance_bug+0x24e/0x2c0 kernel/locking/lockdep.c:5102
__lock_release kernel/locking/lockdep.c:5339 [inline]
lock_release+0x5ad/0xa20 kernel/locking/lockdep.c:5682
__mutex_unlock_slowpath+0xde/0x750 kernel/locking/mutex.c:907
ocfs2_read_blocks+0x11ef/0x16e0 fs/ocfs2/buffer_head_io.c:394
ocfs2_read_block fs/ocfs2/buffer_head_io.h:52 [inline]
ocfs2_read_extent_block fs/ocfs2/alloc.c:934 [inline]
__ocfs2_find_path+0x2f9/0x7e0 fs/ocfs2/alloc.c:1835
ocfs2_find_leaf+0xcb/0x220 fs/ocfs2/alloc.c:1931
ocfs2_get_clusters_nocache+0x1a9/0xbe0 fs/ocfs2/extent_map.c:418
ocfs2_get_clusters+0x5b5/0xbc0 fs/ocfs2/extent_map.c:621
ocfs2_extent_map_get_blocks+0x248/0x7d0 fs/ocfs2/extent_map.c:668
ocfs2_read_virt_blocks+0x313/0xab0 fs/ocfs2/extent_map.c:977
ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline]
ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline]
ocfs2_find_entry+0x436/0x28c0 fs/ocfs2/dir.c:1080
ocfs2_find_files_on_disk+0x10d/0x3a0 fs/ocfs2/dir.c:1982
ocfs2_lookup_ino_from_name+0xad/0x1e0 fs/ocfs2/dir.c:2004
_ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline]
ocfs2_get_system_file_inode+0x314/0x7b0 fs/ocfs2/sysfile.c:112
ocfs2_init_global_system_inodes+0x328/0x720 fs/ocfs2/super.c:457
ocfs2_initialize_super fs/ocfs2/super.c:2250 [inline]
ocfs2_fill_super+0x2f82/0x5730 fs/ocfs2/super.c:994
mount_bdev+0x2c9/0x3f0 fs/super.c:1443
legacy_get_tree+0xeb/0x180 fs/fs_context.c:632
vfs_get_tree+0x88/0x270 fs/super.c:1573
do_new_mount+0x2ba/0xb40 fs/namespace.c:3051
do_mount fs/namespace.c:3394 [inline]
__do_sys_mount fs/namespace.c:3602 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1e4017f79a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f1e40f5be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1e40f5bef0 RCX: 00007f1e4017f79a
RDX: 0000000020004440 RSI: 0000000020000780 RDI: 00007f1e40f5beb0
RBP: 0000000020004440 R08: 00007f1e40f5bef0 R09: 0000000001000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000020000780
R13: 00007f1e40f5beb0 R14: 000000000000444a R15: 00000000200005c0
</TASK>
(syz.3.122,4297,0):__ocfs2_find_path:1837 ERROR: status = -12
(syz.3.122,4297,0):ocfs2_find_leaf:1933 ERROR: status = -12
(syz.3.122,4297,0):ocfs2_get_clusters_nocache:421 ERROR: status = -12
(syz.3.122,4297,0):ocfs2_get_clusters:624 ERROR: status = -12
(syz.3.122,4297,0):ocfs2_extent_map_get_blocks:671 ERROR: status = -12
(syz.3.122,4297,0):ocfs2_read_virt_blocks:981 ERROR: status = -12
(syz.3.122,4297,0):ocfs2_read_dir_block:511 ERROR: status = -12
(syz.3.122,4297,0):ocfs2_init_global_system_inodes:461 ERROR: status = -22
(syz.3.122,4297,0):ocfs2_init_global_system_inodes:463 ERROR: Unable to load system inode 1, possibly corrupt fs?
(syz.3.122,4297,0):ocfs2_init_global_system_inodes:472 ERROR: status = -22
(syz.3.122,4297,0):ocfs2_initialize_super:2252 ERROR: status = -22
(syz.3.122,4297,0):ocfs2_fill_super:1176 ERROR: status = -22