syzbot


kernel BUG in ocfs2_dio_wr_get_block

Status: upstream: reported on 2024/09/12 09:36
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+f8b081be889b639423bb@syzkaller.appspotmail.com
First crash: 6d05h, last: 5d04h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] kernel BUG in ocfs2_dio_wr_get_block 0 (1) 2024/09/12 09:36

Sample crash report:
(syz.0.0,5110,0):__ocfs2_journal_access:705 ERROR: Error -30 getting 1 access to buffer!
(syz.0.0,5110,0):ocfs2_write_end_nolock:1967 ERROR: status = -30
(syz.0.0,5110,0):ocfs2_commit_trans:382 ERROR: status = -5
------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:2279!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5110 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
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_dio_wr_get_block+0x18bd/0x18d0 fs/ocfs2/aops.c:2279
Code: e1 8e 4c 89 f2 e8 23 f7 6b 01 e9 3a f6 ff ff e8 19 3d 39 08 e8 54 30 13 fe 90 0f 0b e8 4c 30 13 fe 90 0f 0b e8 44 30 13 fe 90 <0f> 0b e8 3c 30 13 fe 90 0f 0b 66 0f 1f 84 00 00 00 00 00 90 90 90
RSP: 0018:ffffc90002f4f060 EFLAGS: 00010246
RAX: ffffffff83805c6c RBX: 0000000000002000 RCX: 0000000000040000
RDX: ffffc9000b9fa000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90002f4f250 R08: ffffffff8380570b R09: 1ffffffff283c928
R10: dffffc0000000000 R11: fffffbfff283c929 R12: 1ffff110096fc90d
R13: dffffc0000000000 R14: 00000000ffffffe2 R15: ffff88804b5f2b10
FS:  00007f071ed946c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000dc00000000 CR3: 0000000040d04000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 get_more_blocks fs/direct-io.c:649 [inline]
 do_direct_IO fs/direct-io.c:937 [inline]
 __blockdev_direct_IO+0x1c90/0x4890 fs/direct-io.c:1249
 ocfs2_direct_IO+0x257/0x2c0 fs/ocfs2/aops.c:2465
 generic_file_direct_write+0x130/0x350 mm/filemap.c:3941
 __generic_file_write_iter+0x129/0x230 mm/filemap.c:4107
 ocfs2_file_write_iter+0x17b4/0x1f60 fs/ocfs2/file.c:2455
 do_iter_readv_writev+0x60a/0x890
 vfs_writev+0x37c/0xbb0 fs/read_write.c:971
 do_pwritev fs/read_write.c:1072 [inline]
 __do_sys_pwritev2 fs/read_write.c:1131 [inline]
 __se_sys_pwritev2+0x1ca/0x2d0 fs/read_write.c:1122
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f071df7def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f071ed94038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f071e136058 RCX: 00007f071df7def9
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000004
RBP: 00007f071dff0b76 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000001400 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f071e136058 R15: 00007ffc88f3e3c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_dio_wr_get_block+0x18bd/0x18d0 fs/ocfs2/aops.c:2279
Code: e1 8e 4c 89 f2 e8 23 f7 6b 01 e9 3a f6 ff ff e8 19 3d 39 08 e8 54 30 13 fe 90 0f 0b e8 4c 30 13 fe 90 0f 0b e8 44 30 13 fe 90 <0f> 0b e8 3c 30 13 fe 90 0f 0b 66 0f 1f 84 00 00 00 00 00 90 90 90
RSP: 0018:ffffc90002f4f060 EFLAGS: 00010246
RAX: ffffffff83805c6c RBX: 0000000000002000 RCX: 0000000000040000
RDX: ffffc9000b9fa000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90002f4f250 R08: ffffffff8380570b R09: 1ffffffff283c928
R10: dffffc0000000000 R11: fffffbfff283c929 R12: 1ffff110096fc90d
R13: dffffc0000000000 R14: 00000000ffffffe2 R15: ffff88804b5f2b10
FS:  00007f071ed946c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000dc00000000 CR3: 0000000040d04000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/12 16:25 upstream 77f587896757 60e1a995 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] 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.