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kernel BUG at fs/ocfs2/suballoc.c:2871!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5815 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:_ocfs2_free_suballoc_bits+0x2689/0x27a0
Code: fe 48 8b 74 24 18 e9 41 ea ff ff 89 f9 80 e1 07 fe c1 38 c1 0f 8c 22 f5 ff ff e8 42 60 66 fe e9 18 f5 ff ff e8 78 13 fc fd 90 <0f> 0b e8 70 13 fc fd e9 e8 00 00 00 44 89 f1 80 e1 07 fe c1 38 c1
RSP: 0018:ffffc9000676f600 EFLAGS: 00010293
RAX: ffffffff83c99b78 RBX: 00000000000001ff RCX: ffff888104718000
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000000000256
RBP: ffffc9000676f868 R08: ffffffff9011ccb7 R09: 1ffffffff2023996
R10: dffffc0000000000 R11: fffffbfff2023997 R12: 0000000000000256
R13: ffff888011ca3a00 R14: ffff88801be99000 R15: dffffc0000000000
FS:  0000555571984500(0000) GS:ffff88818de57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f824b03f000 CR3: 000000011b9b8000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 _ocfs2_free_clusters+0x5c2/0xab0
 __ocfs2_flush_truncate_log+0x77f/0x12f0
 ocfs2_flush_truncate_log+0x4f/0x70
 ocfs2_sync_fs+0x11c/0x340
 sync_filesystem+0x1cf/0x230
 generic_shutdown_super+0x77/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff60999e017
Code: a2 c7 05 dc 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffef334a6d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007ff60999e017
RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffef334b880
RBP: 00007ff609a32120 R08: 00000000000105a0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffef334b880
R13: 00007ff609a32120 R14: 00005555719844e8 R15: 00007ffef334c950
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0x2689/0x27a0
Code: fe 48 8b 74 24 18 e9 41 ea ff ff 89 f9 80 e1 07 fe c1 38 c1 0f 8c 22 f5 ff ff e8 42 60 66 fe e9 18 f5 ff ff e8 78 13 fc fd 90 <0f> 0b e8 70 13 fc fd e9 e8 00 00 00 44 89 f1 80 e1 07 fe c1 38 c1
RSP: 0018:ffffc9000676f600 EFLAGS: 00010293
RAX: ffffffff83c99b78 RBX: 00000000000001ff RCX: ffff888104718000
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000000000256
RBP: ffffc9000676f868 R08: ffffffff9011ccb7 R09: 1ffffffff2023996
R10: dffffc0000000000 R11: fffffbfff2023997 R12: 0000000000000256
R13: ffff888011ca3a00 R14: ffff88801be99000 R15: dffffc0000000000
FS:  0000555571984500(0000) GS:ffff8882a9457000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555588150a28 CR3: 000000011b9b8000 CR4: 00000000000006f0
