syzbot


KASAN: null-ptr-deref Read in insert_char
Status: upstream: reported C repro on 2020/01/09 08:09
Reported-by: syzbot+7416b988c249396c5e2c@syzkaller.appspotmail.com
First crash: 140d, last: 12d

Cause bisection: the bug happens on the oldest tested release
Crash: general protection fault in insert_char (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.14 KASAN: null-ptr-deref Read in insert_char C 1 20d 140d 0/1 upstream: reported C repro on 2020/01/09 20:28
linux-4.19 KASAN: null-ptr-deref Read in insert_char C 3 15d 150d 0/1 upstream: reported C repro on 2019/12/30 16:36

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci-upstream-kasan-gce-root 2020/05/16 07:48 upstream 12bf0b63 ddc3e859 .config log report syz C
ci-upstream-kasan-gce-root 2020/04/16 07:28 upstream 00086336 ddc3e859 .config log report syz C
ci-upstream-kasan-gce-root 2020/03/16 20:59 upstream fb33c651 ddc3e859 .config log report syz C
Crashes (12):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2020/01/09 15:31 upstream b07f636f ddc3e859 .config log report syz C daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce 2020/01/09 09:43 upstream b07f636f ddc3e859 .config log report syz C daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-selinux-root 2020/01/09 09:04 upstream b07f636f ddc3e859 .config log report syz C daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-386 2020/01/09 09:43 upstream b07f636f ddc3e859 .config log report syz C daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-root 2020/01/15 10:50 upstream 95e20af9 fa12bd3c .config log report daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-root 2020/01/15 10:18 upstream 95e20af9 fa12bd3c .config log report daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-root 2020/01/15 10:05 upstream 95e20af9 fa12bd3c .config log report daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-root 2020/01/15 09:57 upstream 95e20af9 fa12bd3c .config log report daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-selinux-root 2020/01/09 07:07 upstream b07f636f ddc3e859 .config log report daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-386 2020/01/12 03:55 upstream ac61145a 4c04afaa .config log report daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-kasan-gce-386 2020/01/11 12:17 upstream bef1d882 4c04afaa .config log report daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, nico@fluxnic.net, sam@ravnborg.org, textshell@uchuujin.de
ci-upstream-linux-next-kasan-gce-root 2020/02/09 07:49 linux-next 6dff1565 06150bf1 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, ghalat@redhat.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, lukas@wunner.de, nico@fluxnic.net, sam@ravnborg.org