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kernel BUG at fs/ocfs2/suballoc.c:2595!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5447 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:_ocfs2_free_suballoc_bits+0x1186/0x1330 fs/ocfs2/suballoc.c:2595
Code: 50 63 76 fe 49 8b 3c 24 4c 89 f6 48 8b 54 24 18 48 8b 4c 24 50 4c 8b 44 24 10 e8 95 9f 00 00 e9 0d 01 00 00 e8 8b b8 0e fe 90 <0f> 0b e8 83 b8 0e fe 90 0f 0b f3 0f 1e fa 65 8b 1d 49 71 ce 0e bf
RSP: 0018:ffffc900026a72e0 EFLAGS: 00010293
RAX: ffffffff83b24ed5 RBX: 0000000000000000 RCX: ffff88801fb60000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900026a7488 R08: ffffffff8f824677 R09: 1ffffffff1f048ce
R10: dffffc0000000000 R11: fffffbfff1f048cf R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88803823dae0 R15: 0000000000000002
FS:  0000555564f39500(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ad49a8a10 CR3: 00000000426ad000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_free_suballoc_bits fs/ocfs2/suballoc.c:2635 [inline]
 ocfs2_free_dinode+0xb1/0xe0 fs/ocfs2/suballoc.c:2650
 ocfs2_remove_inode fs/ocfs2/inode.c:774 [inline]
 ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline]
 ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]
 ocfs2_evict_inode+0x1d84/0x4040 fs/ocfs2/inode.c:1299
 evict+0x5f4/0xae0 fs/inode.c:837
 d_delete_notify include/linux/fsnotify.h:377 [inline]
 vfs_rmdir+0x3ee/0x660 fs/namei.c:5249
 do_rmdir+0x27f/0x4a0 fs/namei.c:5291
 __do_sys_unlinkat fs/namei.c:5468 [inline]
 __se_sys_unlinkat fs/namei.c:5462 [inline]
 __x64_sys_unlinkat+0xc2/0xf0 fs/namei.c:5462
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f56d3b8eda7
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 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:00007ffe8d887168 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f56d3b8eda7
RDX: 0000000000000200 RSI: 00007ffe8d888310 RDI: 00000000ffffff9c
RBP: 00007f56d3c13d7d R08: 0000555564f5c66b R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000207 R12: 00007ffe8d888310
R13: 00007f56d3c13d7d R14: 0000000000019e67 R15: 00007ffe8d88a4d0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0x1186/0x1330 fs/ocfs2/suballoc.c:2595
Code: 50 63 76 fe 49 8b 3c 24 4c 89 f6 48 8b 54 24 18 48 8b 4c 24 50 4c 8b 44 24 10 e8 95 9f 00 00 e9 0d 01 00 00 e8 8b b8 0e fe 90 <0f> 0b e8 83 b8 0e fe 90 0f 0b f3 0f 1e fa 65 8b 1d 49 71 ce 0e bf
RSP: 0018:ffffc900026a72e0 EFLAGS: 00010293
RAX: ffffffff83b24ed5 RBX: 0000000000000000 RCX: ffff88801fb60000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900026a7488 R08: ffffffff8f824677 R09: 1ffffffff1f048ce
R10: dffffc0000000000 R11: fffffbfff1f048cf R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88803823dae0 R15: 0000000000000002
FS:  0000555564f39500(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005611b14da160 CR3: 00000000426ad000 CR4: 0000000000352ef0