loop0: detected capacity change from 0 to 32768 JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. (syz.0.0,5107,0):ocfs2_read_blocks:240 ERROR: status = -12 ===================================== WARNING: bad unlock balance detected! 6.11.0-syzkaller-03917-ga940d9a43e62 #0 Not tainted ------------------------------------- syz.0.0/5107 is trying to release lock (&oi->ip_io_mutex) at: [] ocfs2_read_blocks+0x11c6/0x1620 fs/ocfs2/buffer_head_io.c:394 but there are no more locks to release! other info that might help us debug this: 2 locks held by syz.0.0/5107: #0: ffff888041c34420 (sb_writers#10){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x200 fs/namespace.c:559 #1: ffff8880232cd100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff8880232cd100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_group_extend+0x229/0xb30 fs/ocfs2/resize.c:296 stack backtrace: CPU: 0 UID: 0 PID: 5107 Comm: syz.0.0 Not tainted 6.11.0-syzkaller-03917-ga940d9a43e62 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_unlock_imbalance_bug+0x25b/0x2d0 kernel/locking/lockdep.c:5260 __lock_release kernel/locking/lockdep.c:5499 [inline] lock_release+0x5cb/0xa30 kernel/locking/lockdep.c:5843 __mutex_unlock_slowpath+0xe2/0x750 kernel/locking/mutex.c:912 ocfs2_read_blocks+0x11c6/0x1620 fs/ocfs2/buffer_head_io.c:394 ocfs2_read_block fs/ocfs2/buffer_head_io.h:52 [inline] ocfs2_read_group_descriptor+0xe7/0x240 fs/ocfs2/suballoc.c:303 ocfs2_group_extend+0x387/0xb30 fs/ocfs2/resize.c:323 ocfs2_ioctl+0x771/0x7d0 fs/ocfs2/ioctl.c:873 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 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: 0033:0x7fc70db7def9 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:00007fc70e90b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc70dd35f80 RCX: 00007fc70db7def9 RDX: 00000000200000c0 RSI: 0000000040046f01 RDI: 0000000000000004 RBP: 00007fc70dbf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc70dd35f80 R15: 00007ffec5d7fad8 (syz.0.0,5107,0):ocfs2_group_extend:326 ERROR: status = -12