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kernel BUG in ocfs2_dio_wr_get_block

Status: upstream: reported C repro on 2024/09/12 09:36
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+f8b081be889b639423bb@syzkaller.appspotmail.com
First crash: 533d, last: 3d16h
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] kernel BUG in ocfs2_dio_wr_get_block 0 (3) 2025/04/07 01:06
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2025/09/11 16:58 19m retest repro upstream OK log
2025/09/11 16:58 20m retest repro upstream OK log
2025/09/11 16:58 19m retest repro upstream OK log

Sample crash report:
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.
(syz.0.0,5318,0):__ocfs2_journal_access:724 ERROR: Error -30 getting 1 access to buffer!
(syz.0.0,5318,0):ocfs2_write_end_nolock:1943 ERROR: status = -30
(syz.0.0,5318,0):ocfs2_commit_trans:401 ERROR: status = -5
------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:2254!
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_dio_wr_get_block+0x17ee/0x1800 fs/ocfs2/aops.c:2254
Code: 89 d7 e8 c5 10 76 fe 44 89 fa 4c 8b 7c 24 38 e9 a3 fa ff ff e8 83 5d 0a fe 90 0f 0b e8 7b 5d 0a fe 90 0f 0b e8 73 5d 0a fe 90 <0f> 0b e8 6b 5d 0a fe 90 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc9000ed66e40 EFLAGS: 00010287
RAX: ffffffff83bb3dad RBX: 00000000ffffffe2 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 0000000000076bb1 RDI: 0000000000076bb2
RBP: ffffc9000ed67010 R08: ffffffff9011a2b7 R09: 1ffffffff2023456
R10: dffffc0000000000 R11: fffffbfff2023457 R12: ffff888047a86c68
R13: dffffc0000000000 R14: 1ffff92001dacddc R15: 0000000000001000
FS:  00007f55d53eb6c0(0000) GS:ffff88808ca5b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056025fed92c0 CR3: 0000000043c7e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x15d7/0x32f0 fs/direct-io.c:1243
 ocfs2_direct_IO+0x251/0x2c0 fs/ocfs2/aops.c:2440
 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4248
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4417
 ocfs2_file_write_iter+0x1663/0x1ed0 fs/ocfs2/file.c:2476
 iter_file_splice_write+0x9a1/0x10f0 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+0x53a/0xc70 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x535/0x7d0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f55d459c629
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:00007f55d53eb028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f55d4815fa0 RCX: 00007f55d459c629
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f55d4632b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f55d4816038 R14: 00007f55d4815fa0 R15: 00007ffc77b632e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_dio_wr_get_block+0x17ee/0x1800 fs/ocfs2/aops.c:2254
Code: 89 d7 e8 c5 10 76 fe 44 89 fa 4c 8b 7c 24 38 e9 a3 fa ff ff e8 83 5d 0a fe 90 0f 0b e8 7b 5d 0a fe 90 0f 0b e8 73 5d 0a fe 90 <0f> 0b e8 6b 5d 0a fe 90 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc9000ed66e40 EFLAGS: 00010287
RAX: ffffffff83bb3dad RBX: 00000000ffffffe2 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 0000000000076bb1 RDI: 0000000000076bb2
RBP: ffffc9000ed67010 R08: ffffffff9011a2b7 R09: 1ffffffff2023456
R10: dffffc0000000000 R11: fffffbfff2023457 R12: ffff888047a86c68
R13: dffffc0000000000 R14: 1ffff92001dacddc R15: 0000000000001000
FS:  00007f55d53eb6c0(0000) GS:ffff88808ca5b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056025fed92c0 CR3: 0000000043c7e000 CR4: 0000000000352ef0

Crashes (351):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/23 15:55 upstream 6de23f81a5e0 7c9658af .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2026/02/21 14:24 upstream a95f71ad3e2e 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2026/02/20 08:53 upstream 8bf22c33e7a1 17d780d6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2026/02/19 01:17 upstream 23b0f90ba871 77d4d919 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2026/01/07 18:23 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2026/01/05 14:21 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2026/01/02 05:39 upstream b69053dd3ffb d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2026/01/01 08:31 upstream 349bd28a86f2 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/12/29 14:30 upstream 7839932417dd d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/12/14 18:39 upstream 8f0b4cce4481 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/12/11 06:45 upstream d358e5254674 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/12/10 21:49 upstream 0048fbb4011e d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/11/25 20:45 upstream 8a2bcda5e139 bf6fe8fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/11/23 02:45 upstream 89edd36fd801 4fb8ef37 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/11/07 11:30 upstream 4a0c9b339199 4e1406b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/11/06 21:02 upstream c2c2ccfd4ba7 4e1406b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/10/22 18:18 upstream dd72c8fcf6d3 c0460fcd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/10/13 02:57 upstream 3a8660878839 ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/10/12 08:27 upstream 98906f9d850e ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/10/11 20:39 upstream 0739473694c4 ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/09/27 19:50 upstream fec734e8d564 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/09/27 13:28 upstream fec734e8d564 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/09/27 07:58 upstream 083fc6d7fa0d 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/09/23 03:04 upstream cec1e6e5d1ab 0ac7291c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/09/15 20:12 upstream f83ec76bf285 e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/28 15:17 upstream 07d9df80082b bee60a83 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/27 20:13 upstream 39f90c196721 e12e5ba4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/25 22:09 upstream b6add54ba618 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/21 20:18 upstream 32b7144f806e 3e79b825 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/19 07:21 upstream be48bcf004f9 52052143 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/14 03:33 upstream dfc0f6373094 22ec1469 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/13 09:03 upstream 8742b2d8935f 22ec1469 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/12 00:50 upstream 8f5ae30d69d7 c06e8995 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/08/01 20:27 upstream 89748acdf226 40127d41 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/28 09:18 upstream b711733e89a3 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/27 17:19 upstream ec2df4364666 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/27 13:50 upstream ec2df4364666 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/26 07:51 upstream 5f33ebd2018c fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/25 04:01 upstream 94ce1ac2c9b4 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/22 03:44 upstream 89be9a83ccf1 1555463b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/21 12:38 upstream 89be9a83ccf1 56d87229 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/07/21 05:17 upstream 89be9a83ccf1 7117feec .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/06/11 19:14 upstream aef17cb3d3c4 98683f8f .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (clean fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/04/07 01:05 upstream 0af2f6be1b42 1c65791e .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2025/02/15 23:06 upstream 7ff71e6d9239 40a34ec9 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (clean fs)] [mounted in repro #3] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
2024/09/11 16:06 upstream 8d8d276ba2fb ede7a22c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_dio_wr_get_block
* Struck through repros no longer work on HEAD.