loop0: detected capacity change from 0 to 32768
(syz.0.0,5318,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC.
(syz.0.0,5318,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC.
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:922!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5318 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_reserve_suballoc_bits+0x40c8/0x4850 fs/ocfs2/suballoc.c:922
Code: 00 00 e9 28 f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ca da ff ff 48 89 df e8 f3 f0 61 fe e9 bd da ff ff e8 69 c7 f2 fd 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 60 dc ff ff 4c 89 f7
RSP: 0018:ffffc9000cc4dce0 EFLAGS: 00010287
RAX: ffffffff83d379d7 RBX: 0000000000000001 RCX: 0000000000100000
RDX: ffffc9000f51a000 RSI: 00000000000db48c RDI: 00000000000db48d
RBP: ffffc9000cc4e1b0 R08: ffffffff9032d3f7 R09: 1ffffffff2065a7e
R10: dffffc0000000000 R11: fffffbfff2065a7f R12: ffff8880441cdc60
R13: ffff8880535a1e00 R14: dffffc0000000000 R15: fffff52001989bc8
FS:  00007f0237c226c0(0000) GS:ffff88808c821000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcbe2194000 CR3: 00000000439cc000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_reserve_cluster_bitmap_bits+0xc4/0x1d0 fs/ocfs2/suballoc.c:1250
 ocfs2_local_alloc_reserve_for_window fs/ocfs2/localalloc.c:1106 [inline]
 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1242 [inline]
 ocfs2_reserve_local_alloc_bits+0x8d0/0x2680 fs/ocfs2/localalloc.c:669
 ocfs2_reserve_clusters_with_limit+0x1b9/0xc20 fs/ocfs2/suballoc.c:1284
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1345 [inline]
 ocfs2_lock_allocators+0x2d1/0x5f0 fs/ocfs2/suballoc.c:3120
 ocfs2_write_begin_nolock+0x1b7b/0x41f0 fs/ocfs2/aops.c:1720
 ocfs2_dio_wr_get_block+0xbab/0x17c0 fs/ocfs2/aops.c:2215
 get_more_blocks fs/direct-io.c:644 [inline]
 do_direct_IO fs/direct-io.c:932 [inline]
 __blockdev_direct_IO+0x1590/0x3380 fs/direct-io.c:1236
 ocfs2_direct_IO+0x249/0x2c0 fs/ocfs2/aops.c:2460
 generic_file_direct_write+0x1d0/0x3f0 mm/filemap.c:4297
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4466
 ocfs2_file_write_iter+0x1706/0x1f10 fs/ocfs2/file.c:2481
 iter_file_splice_write+0xa31/0x1240 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x57b/0xcb0 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x52e/0x7c0 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1432 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1418
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0236d9ce59
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:00007f0237c21fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f0237015fa0 RCX: 00007f0236d9ce59
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f0236e32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0237016038 R14: 00007f0237015fa0 R15: 00007ffc332d7808
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_reserve_suballoc_bits+0x40c8/0x4850 fs/ocfs2/suballoc.c:922
Code: 00 00 e9 28 f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ca da ff ff 48 89 df e8 f3 f0 61 fe e9 bd da ff ff e8 69 c7 f2 fd 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 60 dc ff ff 4c 89 f7
RSP: 0018:ffffc9000cc4dce0 EFLAGS: 00010287
RAX: ffffffff83d379d7 RBX: 0000000000000001 RCX: 0000000000100000
RDX: ffffc9000f51a000 RSI: 00000000000db48c RDI: 00000000000db48d
RBP: ffffc9000cc4e1b0 R08: ffffffff9032d3f7 R09: 1ffffffff2065a7e
R10: dffffc0000000000 R11: fffffbfff2065a7f R12: ffff8880441cdc60
R13: ffff8880535a1e00 R14: dffffc0000000000 R15: fffff52001989bc8
FS:  00007f0237c226c0(0000) GS:ffff88808c821000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f807e199b50 CR3: 00000000439cc000 CR4: 0000000000352ef0