syzbot


general protection fault in x86_fsgsbase_read_task
Status: fixed on 2020/09/16 22:51
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 8ab49526 x86/fsgsbase/64: Fix NULL deref in 86_fsgsbase_read_task
First crash: 162d, last: 162d

Cause bisection: introduced by (bisect log) :
commit 208151bfb70fb7fb39959998832f7b5879be4751
Author: Helge Deller <deller@gmx.de>
Date: Sun Jun 14 08:54:10 2020 +0000

  parisc: Convert to BIT_MASK() and BIT_WORD()

Crash: WARNING in ptrace_stop (log)
Repro: C syz .config

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-386 2020/08/14 00:51 upstream 990f2273 54ce1ed6 .config log report syz C 0x7f454c46@gmail.com, bp@alien8.de, chang.seok.bae@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, luto@kernel.org, mingo@redhat.com, sashal@kernel.org, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-386 2020/08/13 23:04 upstream 990f2273 54ce1ed6 .config log report 0x7f454c46@gmail.com, bp@alien8.de, chang.seok.bae@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, luto@kernel.org, mingo@redhat.com, sashal@kernel.org, tglx@linutronix.de, x86@kernel.org