syzbot


general protection fault in xsk_release
Status: upstream: reported C repro on 2020/09/25 14:47
Reported-by: syzbot+ddc7b4944bc61da19b81@syzkaller.appspotmail.com
Fix commit: 1fd17c8c xsk: Fix possible crash in socket_release when out-of-memory
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 31d, last: 31d

Cause bisection: introduced by (bisect log) :
commit 1c1efc2af158869795d3334a12fed2afd9c51539
Author: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Fri Aug 28 08:26:17 2020 +0000

  xsk: Create and free buffer pool independently from umem

Crash: BUG: unable to handle kernel NULL pointer dereference in xp_set_fq (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2020/09/28 19:23 17m daniel@iogearbox.net bpf-next OK

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-net-kasan-gce 2020/09/25 07:23 net-next 3fc826f1 54289b08 .config log report syz C ast@kernel.org, bjorn.topel@intel.com, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, jonathan.lemon@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, magnus.karlsson@intel.com, netdev@vger.kernel.org
ci-upstream-net-kasan-gce 2020/09/25 06:56 net-next 3fc826f1 54289b08 .config log report info ast@kernel.org, bjorn.topel@intel.com, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, jonathan.lemon@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, magnus.karlsson@intel.com, netdev@vger.kernel.org