Re: [syzbot] KASAN: use-after-free Read in xfs_qm_dqfree_one

From: syzbot
Date: Mon Dec 05 2022 - 12:06:21 EST


Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in corrupted

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P4111 } 2640 jiffies s: 2849 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):


Tested on:

commit: 0ba09b17 Revert "mm: align larger anonymous mappings o..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=135dc11d880000
kernel config: https://syzkaller.appspot.com/x/.config?x=2325e409a9a893e1
dashboard link: https://syzkaller.appspot.com/bug?extid=912776840162c13db1a3
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
patch: https://syzkaller.appspot.com/x/patch.diff?x=1551f50f880000