From: syzbot <syzbot+f0e0fcf3cd1047ae60ad@syzkaller.appspotmail.com>
To: jfs-discussion@lists.sourceforge.net,
linux-kernel@vger.kernel.org, shaggy@kernel.org,
syzkaller-bugs@googlegroups.com
Subject: [syzbot] UBSAN: array-index-out-of-bounds in dbDiscardAG
Date: Tue, 18 Oct 2022 22:40:35 -0700 [thread overview]
Message-ID: <000000000000dd7d5a05eb5ca523@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=114e4eaa880000
kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
dashboard link: https://syzkaller.appspot.com/bug?extid=f0e0fcf3cd1047ae60ad
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f1ff6481e26f/disk-493ffd66.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/101bd3c7ae47/vmlinux-493ffd66.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f0e0fcf3cd1047ae60ad@syzkaller.appspotmail.com
ERROR: (device loop2): dbAllocAG: allocation request is larger than the allocation group size
ERROR: (device loop2): dbDiscardAG: -EIO
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:1567:12
index 128 is out of range for type 's64 [128]'
CPU: 1 PID: 26571 Comm: syz-executor.2 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283
dbDiscardAG+0x9d6/0xa50 fs/jfs/jfs_dmap.c:1567
jfs_ioc_trim+0x433/0x660 fs/jfs/jfs_discard.c:100
jfs_ioctl+0x2bd/0x3d0 fs/jfs/ioctl.c:131
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa60c68b5a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa60d808168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa60c7abf80 RCX: 00007fa60c68b5a9
RDX: 0000000020000140 RSI: 00000000c0185879 RDI: 0000000000000003
RBP: 00007fa60c6e6580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc54dd4dbf R14: 00007fa60d808300 R15: 0000000000022000
</TASK>
================================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
next reply other threads:[~2022-10-19 5:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 5:40 syzbot [this message]
2022-10-19 5:59 ` [syzbot] UBSAN: array-index-out-of-bounds in dbDiscardAG syzbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000dd7d5a05eb5ca523@google.com \
--to=syzbot+f0e0fcf3cd1047ae60ad@syzkaller.appspotmail.com \
--cc=jfs-discussion@lists.sourceforge.net \
--cc=linux-kernel@vger.kernel.org \
--cc=shaggy@kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.