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kernel BUG at fs/ocfs2/suballoc.c:1383!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ocfs2_block_group_set_bits+0x863/0x990 fs/ocfs2/suballoc.c:1383
Code: 07 fe c1 38 c1 0f 8c b8 fe ff ff 4c 89 e7 89 f3 e8 d2 82 6e fe 89 de e9 a7 fe ff ff e8 96 a5 04 fe 90 0f 0b e8 8e a5 04 fe 90 <0f> 0b 65 8b 1d c8 7e 33 0f bf 07 00 00 00 89 de e8 b8 a9 04 fe 83
RSP: 0018:ffffc9000d4973e0 EFLAGS: 00010246
RAX: ffffffff83bfe162 RBX: 000000000000006b RCX: 0000000000100000
RDX: ffffc90021003000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: ffffc9000d497500 R08: 0000000000000007 R09: 00000000000000dc
R10: 00000000fffffffc R11: 0000000000000002 R12: 1ffff11002494c01
R13: 00000000000000dc R14: ffff888012bdcfb8 R15: dffffc0000000000
FS:  00007f67ce5166c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa27d568b50 CR3: 000000001f7ac000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_move_extent fs/ocfs2/move_extents.c:693 [inline]
 __ocfs2_move_extents_range fs/ocfs2/move_extents.c:865 [inline]
 ocfs2_move_extents+0x2ae2/0x3aa0 fs/ocfs2/move_extents.c:937
 ocfs2_ioctl_move_extents+0x5bb/0x760 fs/ocfs2/move_extents.c:1069
 ocfs2_ioctl+0x195/0x7e0 fs/ocfs2/ioctl.c:942
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f67cd59aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f67ce516028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f67cd816090 RCX: 00007f67cd59aeb9
RDX: 00002000000000c0 RSI: 0000000040406f06 RDI: 0000000000000004
RBP: 00007f67cd608c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f67cd816128 R14: 00007f67cd816090 R15: 00007ffe8faab7b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_block_group_set_bits+0x863/0x990 fs/ocfs2/suballoc.c:1383
Code: 07 fe c1 38 c1 0f 8c b8 fe ff ff 4c 89 e7 89 f3 e8 d2 82 6e fe 89 de e9 a7 fe ff ff e8 96 a5 04 fe 90 0f 0b e8 8e a5 04 fe 90 <0f> 0b 65 8b 1d c8 7e 33 0f bf 07 00 00 00 89 de e8 b8 a9 04 fe 83
RSP: 0018:ffffc9000d4973e0 EFLAGS: 00010246
RAX: ffffffff83bfe162 RBX: 000000000000006b RCX: 0000000000100000
RDX: ffffc90021003000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: ffffc9000d497500 R08: 0000000000000007 R09: 00000000000000dc
R10: 00000000fffffffc R11: 0000000000000002 R12: 1ffff11002494c01
R13: 00000000000000dc R14: ffff888012bdcfb8 R15: dffffc0000000000
FS:  00007f67ce5166c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557af18808 CR3: 000000001f7ac000 CR4: 0000000000352ef0