syzbot


kernel BUG at mm/khugepaged.c:LINE!
Status: fixed on 2020/09/16 22:51
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: f3f99d63 khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
First crash: 50d, last: 39d

Cause bisection: introduced by (bisect log):

commit bbe98f9cadff58cdd6a4acaeba0efa8565dabe65
Author: Hugh Dickins <hughd@google.com>
Date: Fri Aug 7 06:26:25 2020 +0000

  khugepaged: khugepaged_test_exit() check mmget_still_valid()

Crash: kernel BUG at mm/khugepaged.c:LINE! (log)
Repro: syz .config

Sample crash report:

Crashes (30):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce 2020/08/19 14:47 upstream 18445bf4 e1c29030 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/08/18 10:32 upstream 06a4ec1d 424dd8e7 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-root 2020/08/16 01:43 upstream c9c9735c 424dd8e7 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/08/14 20:05 upstream a1d21081 424dd8e7 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/14 10:59 upstream a1d21081 424dd8e7 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-386 2020/08/19 23:57 upstream 18445bf4 94b45706 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/08/18 02:07 linux-next 0f1fa584 424dd8e7 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/08/14 05:34 linux-next bc09acc9 54ce1ed6 .config log report syz C akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/08/18 09:41 upstream 06a4ec1d 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/08/18 06:57 upstream 06a4ec1d 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-root 2020/08/14 19:31 upstream a1d21081 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-root 2020/08/14 15:45 upstream a1d21081 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/08/13 01:33 upstream fb893de3 bc15f7db .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/12 10:11 upstream c636eef2 bb3e5fe6 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/11 23:53 upstream 00e4db51 bacaf5fa .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-386 2020/08/18 11:57 upstream 06a4ec1d 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-386 2020/08/18 07:59 upstream 06a4ec1d 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/08/16 22:21 linux-next 4993e4fe 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/08/16 17:29 linux-next 4993e4fe 424dd8e7 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/08/21 00:16 upstream da2968ff 1d75fe45 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/20 22:26 upstream da2968ff 1d75fe45 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/20 00:02 upstream 18445bf4 94b45706 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/08/16 09:59 upstream d84835b1 424dd8e7 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/08/15 03:08 upstream 7fca4dee 424dd8e7 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/12 07:32 upstream c636eef2 bb3e5fe6 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/11 22:50 upstream 00e4db51 bacaf5fa .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-qemu-upstream-386 2020/08/15 21:25 upstream 00e4db51 c2707aa5 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-qemu-upstream-386 2020/08/09 13:35 upstream 06a81c1c 70301872 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/08/17 22:03 linux-next 0f1fa584 424dd8e7 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/08/14 05:20 linux-next bc09acc9 54ce1ed6 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org