syzbot


general protection fault in vsock_poll
Status: fixed on 2020/09/16 22:51
Reported-by: syzbot+a61bac2fcc1a7c6623fe@syzkaller.appspotmail.com
Fix commit: 1980c0584483 vsock: fix potential null pointer dereference in vsock_poll()
First crash: 502d, last: 486d

Cause bisection: introduced by (bisect log) :
commit 408624af4c89989117bb2c6517bd50b7708a2fcd
Author: Stefano Garzarella <sgarzare@redhat.com>
Date: Tue Dec 10 10:43:06 2019 +0000

  vsock: use local transport when it is loaded

Crash: general protection fault in virtio_transport_send_pkt_info (log)
Repro: syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2020/08/12 07:56 16m sgarzare@redhat.com https://github.com/stefano-garzarella/linux.git vsock-fix-poll-null-transport OK
2020/08/11 07:59 16m sgarzare@redhat.com https://github.com/stefano-garzarella/linux.git vsock-fix-poll-null-transport OK
2020/08/07 17:40 16m sgarzare@redhat.com https://github.com/stefano-garzarella/linux.git vsock-fix-poll-null-transport OK
2020/08/07 13:04 16m sgarzare@redhat.com https://github.com/stefano-garzarella/linux.git vsock-fix-poll-null-transport OK

Sample crash report:

Crashes (15):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/07/27 07:39 upstream 92ed30191993 51265195 .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/07/26 14:30 upstream 04300d66f0a0 51265195 .config log report syz
ci-upstream-kasan-gce-smack-root 2020/07/24 18:59 upstream f37e99aca03f 554af388 .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/07/18 15:38 upstream 6a70f89cc58f 9c812472 .config log report syz
ci-upstream-kasan-gce-root 2020/07/18 09:12 upstream 8882572675c1 9c812472 .config log report syz
ci-upstream-kasan-gce-smack-root 2020/07/18 02:10 upstream 8882572675c1 9c812472 .config log report syz
ci-upstream-net-this-kasan-gce 2020/07/23 05:03 net 2c4dc3148603 340ea530 .config log report syz
ci-upstream-net-this-kasan-gce 2020/07/17 23:33 net 473309fb8372 9c812472 .config log report syz
ci-upstream-net-kasan-gce 2020/07/23 04:35 net-next a6c0d0934f0d 340ea530 .config log report syz
ci-upstream-net-kasan-gce 2020/07/18 05:57 net-next 4291dc1a5608 9c812472 .config log report syz
ci-upstream-linux-next-kasan-gce-root 2020/07/26 08:20 linux-next 26027945c94a 1f7cc1ca .config log report syz
ci-upstream-linux-next-kasan-gce-root 2020/07/18 08:10 linux-next 4c43049f19a2 9c812472 .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/08/03 08:35 upstream 5a30a78924ec 196277c4 .config log report
ci-upstream-net-this-kasan-gce 2020/07/17 22:40 net 473309fb8372 9c812472 .config log report
ci-upstream-net-kasan-gce 2020/07/23 03:44 net-next a6c0d0934f0d 340ea530 .config log report