[syzbot] [ocfs2?] kernel BUG in ocfs2_dio_wr_get_block

syzbot
2024-09-12T09:36:26Z

Hello,

syzbot found the following issue on:

HEAD commit: 8d8d276ba2fb Merge tag 'trace-v6.11-rc6' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=160d07c7980000
kernel config: https://syzkaller.appspot.com/x/.config?x=61d235cb8d15001c
dashboard link: https://syzkaller.appspot.com/bug?extid=f8b081be889b639423bb
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-8d8d276b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d23708af23a4/vmlinux-8d8d276b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1aed2837c105/bzImage-8d8d276b.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f8b081be889b639423bb@syzkaller.appspotmail.com

(syz.0.0,5118,0):__ocfs2_journal_access:705 ERROR: Error -30 getting 1 access to buffer!
(syz.0.0,5118,0):ocfs2_write_end_nolock:1967 ERROR: status = -30
(syz.0.0,5118,0):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: 5118 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #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:ffffc90002d6f060 EFLAGS: 00010287
RAX: ffffffff83805c6c RBX: 0000000000002000 RCX: 0000000000040000
RDX: ffffc9000b8c1000 RSI: 000000000001881d RDI: 000000000001881e
RBP: ffffc90002d6f250 R08: ffffffff8380570b R09: 1ffffffff283c928
R10: dffffc0000000000 R11: fffffbfff283c929 R12: 1ffff11006b8d50d
R13: dffffc0000000000 R14: 00000000ffffffe2 R15: ffff888040c68710
FS: 00007f1e355396c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000dc00000000 CR3: 000000003ca5a000 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: 0033:0x7f1e3477def9
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:00007f1e35539038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f1e34936058 RCX: 00007f1e3477def9
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000004
RBP: 00007f1e347f0b56 R08: 0000000000000030 R09: 0000000000000003
R10: 0000000000001400 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f1e34936058 R15: 00007ffd191ac778
</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:ffffc90002d6f060 EFLAGS: 00010287
RAX: ffffffff83805c6c RBX: 0000000000002000 RCX: 0000000000040000
RDX: ffffc9000b8c1000 RSI: 000000000001881d RDI: 000000000001881e
RBP: ffffc90002d6f250 R08: ffffffff8380570b R09: 1ffffffff283c928
R10: dffffc0000000000 R11: fffffbfff283c929 R12: 1ffff11006b8d50d
R13: dffffc0000000000 R14: 00000000ffffffe2 R15: ffff888040c68710
FS: 00007f1e355396c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000dc00000000 CR3: 000000003ca5a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

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