syzbot


BUG: unable to handle page fault for address = ADDR
Status: fixed on 2019/05/27 12:48
Reported-by: syzbot+45474c076a4927533d2e@syzkaller.appspotmail.com
Fix commit: baf76f0c slip: make slhc_free() silently accept an error pointer
First crash: 56d, last: 55d

Bisection: introduced by (bisect log):

commit bcdd0ca8cb8730573afebcaae4138f8f4c8eaa20
Author: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Wed Apr 25 11:12:31 2018 +0000

  tty: Use __GFP_NOFAIL for tty_ldisc_get()

Tree: linux-next
Crash: BUG: unable to handle kernel paging request in slhc_free (log)
Repro: C syz .config

Sample crash report:

All crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-linux-next-kasan-gce-root 2019/04/25 09:28 linux-next c392798a 8e3c52b1 .config log report syz C davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-linux-next-kasan-gce-root 2019/04/25 03:32 linux-next c392798a 8e3c52b1 .config log report bp@alien8.de, hpa@zytor.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-linux-next-kasan-gce-root 2019/04/25 09:10 linux-next c392798a 8e3c52b1 .config log report davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org