Re: [syzbot] [erofs?] general protection fault in erofs_bread (2)

From: Gao Xiang
Date: Wed May 17 2023 - 14:15:24 EST




On 2023/5/18 10:35, syzbot wrote:
Hello,

syzbot found the following issue on:

HEAD commit: f1fcbaa18b28 Linux 6.4-rc2
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=114aa029280000
kernel config: https://syzkaller.appspot.com/x/.config?x=6beb6ffe4f59ef2a
dashboard link: https://syzkaller.appspot.com/bug?extid=bbb353775d51424087f2
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13dd834e280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167ef106280000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4adf207e9d5e/disk-f1fcbaa1.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9e7cce92f611/vmlinux-f1fcbaa1.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cfd911b80f89/bzImage-f1fcbaa1.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/a2583fbaaf14/mount_2.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bbb353775d51424087f2@xxxxxxxxxxxxxxxxxxxxxxxxx

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git fixes