------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1443!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5338 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~bpo12+1 04/01/2014
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996
Code: c2 fb ff ff e8 c5 ba 11 fe 90 0f 0b e8 bd ba 11 fe 90 0f 0b e8 b5 ba 11 fe 90 0f 0b e8 ad ba 11 fe 90 0f 0b e8 a5 ba 11 fe 90 <0f> 0b e8 9d ba 11 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0000:ffffc9000d45d4e0 EFLAGS: 00010293
RAX: ffffffff83ae5b8b RBX: 0000000000000000 RCX: ffff888000f74900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d45d770 R08: ffffc9000d45d800 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880426cfc88
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff110084d9f91
FS:  0000000000000000(0000) GS:ffff88808d732000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f66b885d880 CR3: 000000005257d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __ocfs2_claim_clusters+0x303/0x8f0 fs/ocfs2/suballoc.c:2421
 ocfs2_local_alloc_new_window fs/ocfs2/localalloc.c:1166 [inline]
 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1295 [inline]
 ocfs2_reserve_local_alloc_bits+0x12be/0x24e0 fs/ocfs2/localalloc.c:669
 ocfs2_reserve_clusters_with_limit+0x1be/0xba0 fs/ocfs2/suballoc.c:1168
 ocfs2_convert_inline_data_to_extents+0x1c9/0x1230 fs/ocfs2/alloc.c:7097
 ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1542 [inline]
 ocfs2_write_begin_nolock+0x178d/0x4340 fs/ocfs2/aops.c:1649
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1884
 generic_perform_write+0x2c5/0x900 mm/filemap.c:4242
 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469
 __kernel_write_iter+0x428/0x910 fs/read_write.c:619
 __kernel_write+0xef/0x150 fs/read_write.c:639
 __dump_emit+0x206/0x310 fs/coredump.c:1220
 elf_core_dump+0x2d05/0x3960 fs/binfmt_elf.c:2090
 coredump_write+0x116c/0x1900 fs/coredump.c:1049
 vfs_coredump+0x1db5/0x2a60 fs/coredump.c:1170
 get_signal+0x1108/0x1340 kernel/signal.c:3019
 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 irqentry_exit_to_user_mode+0x7e/0x110 kernel/entry/common.c:73
 exc_page_fault+0xab/0x100 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f66b784f6b7
Code: 88 15 42 60 ec 00 88 05 3f 60 ec 00 c3 50 48 8d 35 e9 28 1c 00 48 8d 3d ef 28 1c 00 31 c0 e8 20 f7 ff ff 53 89 fb 48 83 ec 10 <64> 8b 04 25 94 ff ff ff 85 c0 74 2a 89 fe 31 c0 bf 3c 00 00 00 e8
RSP: 002b:00007f66b885e1a0 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007f66b798f6c9
RDX: 00007f66b885e1c0 RSI: 00007f66b885e2f0 RDI: 000000000000000b
RBP: 00007f66b7a11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f66b7be6128 R14: 00007f66b7be6090 R15: 00007ffc30bb40f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996
Code: c2 fb ff ff e8 c5 ba 11 fe 90 0f 0b e8 bd ba 11 fe 90 0f 0b e8 b5 ba 11 fe 90 0f 0b e8 ad ba 11 fe 90 0f 0b e8 a5 ba 11 fe 90 <0f> 0b e8 9d ba 11 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0000:ffffc9000d45d4e0 EFLAGS: 00010293
RAX: ffffffff83ae5b8b RBX: 0000000000000000 RCX: ffff888000f74900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d45d770 R08: ffffc9000d45d800 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880426cfc88
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff110084d9f91
FS:  0000000000000000(0000) GS:ffff88808d732000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f66b885d880 CR3: 000000005257d000 CR4: 0000000000352ef0