syzbot has bisected this bug to:
commit d97bd23c2d7d866e99eb3a927c742715c85a90ef
Author: Ondrej Mosnacek <omosnace@xxxxxxxxxx>
Date: Tue Nov 26 13:57:00 2019 +0000
selinux: cache the SID -> context string translation
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13fe5f69e00000
start commit: b0be0eff Merge tag 'x86-pti-2020-01-28' of git://git.kerne..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=10015f69e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=17fe5f69e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9784e57c96a92f20
dashboard link: https://syzkaller.appspot.com/bug?extid=61cba5033e2072d61806
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10088e95e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13fa605ee00000
Reported-by: syzbot+61cba5033e2072d61806@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: d97bd23c2d7d ("selinux: cache the SID -> context string translation")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
