Re: [syzbot] [fs?] KASAN: use-after-free Read in kill_fasync

From: syzbot
Date: Fri Mar 03 2023 - 19:24:35 EST


syzbot suspects this issue was fixed by commit:

commit 69d4c0d3218692ffa56b0e1b9c76c50c699d7044
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Thu Jan 12 19:43:58 2023 +0000

entry, kasan, x86: Disallow overriding mem*() functions

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17adfae4c80000
start commit: 972a278fe60c Merge tag 'for-5.19-rc7-tag' of git://git.ker..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=3cc990589d31f8d6
dashboard link: https://syzkaller.appspot.com/bug?extid=382c8824777dca2812fe
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141c2dac080000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1590cfa4080000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: entry, kasan, x86: Disallow overriding mem*() functions

For information about bisection process see: https://goo.gl/tpsmEJ#bisection