syzbot


WARNING in __switch_to (2)

Status: closed as invalid on 2018/01/31 05:42
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+1d7d9ce4ce4a23cb7d3b@syzkaller.appspotmail.com
First crash: 2242d, last: 2239d
Discussions (1)
Title Replies (including bot) Last reply
WARNING in __switch_to (2) 1 (2) 2018/01/31 05:42
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-49 WARNING in __switch_to C 54 2330d 2398d 1/3 fixed on 2017/10/23 20:15
upstream WARNING in __switch_to kernel C 535 2337d 2384d 3/26 fixed on 2017/10/24 07:07

Sample crash report:
WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 paravirt_write_msr arch/x86/include/asm/paravirt.h:21 [inline]
WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 wrmsrl arch/x86/include/asm/paravirt.h:149 [inline]
WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 load_seg_legacy arch/x86/kernel/process_64.c:255 [inline]
WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 __switch_to+0x10bd/0x13c0 arch/x86/kernel/process_64.c:455
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3582 Comm: syzkaller749144 Not tainted 4.15.0-rc6+ #245
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Shutting down cpus with NMI
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user m[ emo r y3 3.ac1c17es59s7
]
Kernel Offset: disabled
---[ end trace f3dd3601839eaae9 ]---
Rebooting in 86400 seconds..

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/01/01 08:18 upstream 30a7acd57389 00193447 .config console log report syz C ci-upstream-kasan-gce
2018/01/03 08:02 mmots ad036b63ee57 00193447 .config console log report syz C ci-upstream-mmots-kasan-gce
2018/01/03 08:01 linux-next 73005e1a35fd 00193447 .config console log report syz C ci-upstream-next-kasan-gce
2018/01/01 04:32 mmots 37759fa6d0fa 00193447 .config console log report syz C ci-upstream-mmots-kasan-gce
* Struck through repros no longer work on HEAD.