kernel BUG at fs/ocfs2/alloc.c:5581!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 8300 Comm: syz.4.209 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_remove_extent+0x1ecf/0x2020
Code: fa ff ff 48 8b 4c 24 08 80 e1 07 fe c1 38 c1 0f 8c 95 fa ff ff 48 8b 7c 24 08 e8 1c 45 8d fe e9 86 fa ff ff e8 22 dc 29 fe 90 <0f> 0b f3 0f 1e fa 44 89 6c 24 10 65 8b 1d 13 81 0a 0f bf 07 00 00
RSP: 0018:ffffc90003de6600 EFLAGS: 00010293
RAX: ffffffff8395cf0e RBX: ffffc90003de6df8 RCX: ffff888107419cc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: ffffc90003de6950 R08: ffff888107419cc0 R09: 0000000000000006
R10: 00000000fffffffc R11: 0000000000000000 R12: 1ffff1100755ae9a
R13: 0000000000000004 R14: ffff88803aad74d0 R15: dffffc0000000000
FS:  00007fd53e1b76c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc79dd74a8 CR3: 0000000028b62000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_remove_btree_range+0xdef/0x1540
 ocfs2_commit_truncate+0xb64/0x21d0
 ocfs2_evict_inode+0x1138/0x40e0
 evict+0x504/0x9c0
 ocfs2_dentry_iput+0x247/0x370
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 __fput+0x68e/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x6b5/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd53d3c14a5
Code: Unable to access opcode bytes at 0x7fd53d3c147b.
RSP: 002b:00007fd53e1b6f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fd53d5b5fa0 RCX: 00007fd53d3c14a5
RDX: 00007fd53e1b6fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd53d411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fd53d5b6038 R14: 00007fd53d5b5fa0 R15: 00007ffc7d02a998
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_remove_extent+0x1ecf/0x2020
Code: fa ff ff 48 8b 4c 24 08 80 e1 07 fe c1 38 c1 0f 8c 95 fa ff ff 48 8b 7c 24 08 e8 1c 45 8d fe e9 86 fa ff ff e8 22 dc 29 fe 90 <0f> 0b f3 0f 1e fa 44 89 6c 24 10 65 8b 1d 13 81 0a 0f bf 07 00 00
RSP: 0018:ffffc90003de6600 EFLAGS: 00010293
RAX: ffffffff8395cf0e RBX: ffffc90003de6df8 RCX: ffff888107419cc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: ffffc90003de6950 R08: ffff888107419cc0 R09: 0000000000000006
R10: 00000000fffffffc R11: 0000000000000000 R12: 1ffff1100755ae9a
R13: 0000000000000004 R14: ffff88803aad74d0 R15: dffffc0000000000
FS:  00007fd53e1b76c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc79dd74a8 CR3: 000000010b21a000 CR4: 00000000000006f0
