* general protection fault in cpuacct_charge
@ 2018-07-24 7:27 syzbot
2018-07-24 7:29 ` Dmitry Vyukov
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2018-07-24 7:27 UTC (permalink / raw)
To: linux-kernel, syzkaller-bugs, tglx
Hello,
syzbot found the following crash on:
HEAD commit: 8ae71e76cf1f Merge branch 'bpf-offload-sharing'
git tree: bpf-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1645f978400000
kernel config: https://syzkaller.appspot.com/x/.config?x=89129667b46496c3
dashboard link: https://syzkaller.appspot.com/bug?extid=a22ee0b9ff4d252439f4
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+a22ee0b9ff4d252439f4@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
CPU: 1 PID: 0 Comm: �G+�\x01���0x������ Not tainted 4.18.0-rc3+ #58
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:task_css include/linux/cgroup.h:477 [inline]
RIP: 0010:task_ca kernel/sched/cpuacct.c:43 [inline]
RIP: 0010:cpuacct_charge+0x1b8/0x5d0 kernel/sched/cpuacct.c:349
Code: 68 ff ff ff 85 c0 74 0d 80 3d 45 31 3c 08 00 0f 84 04 02 00 00 48 b8
00 00 00 00 00 fc ff df 49 8d 7d 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
85 65 03 00 00 4d 8b 65 10 4d 85 e4 0f 84 0a 01 00
RSP: 0018:ffff8801daf072b0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffff8801c72b40c0 RCX: 0000000000000000
RDX: 00000000000009f3 RSI: 00000000ffff8801 RDI: 0000000000004f99
RBP: ffff8801daf07348 R08: 0000000000000000 R09: 0000000000000000
R10: 0000780baf52484d R11: 0000000000000000 R12: 1ffff1003b5e0e5c
R13: 0000000000004f89 R14: dffffc0000000000 R15: 1ffff1003b5e0e58
FS: 00007f4ba8413700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000340 CR3: 00000001cf0ac000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
cgroup_account_cputime include/linux/cgroup.h:724 [inline]
update_curr+0x389/0xc00 kernel/sched/fair.c:832
enqueue_entity+0x40d/0x2130 kernel/sched/fair.c:4195
enqueue_task_fair+0x22d/0x910 kernel/sched/fair.c:5408
enqueue_task kernel/sched/core.c:751 [inline]
activate_task+0x123/0x2e0 kernel/sched/core.c:770
ttwu_activate kernel/sched/core.c:1659 [inline]
ttwu_do_activate+0xd5/0x1f0 kernel/sched/core.c:1718
ttwu_queue kernel/sched/core.c:1863 [inline]
try_to_wake_up+0x948/0x12b0 kernel/sched/core.c:2076
wake_up_process+0x10/0x20 kernel/sched/core.c:2149
hrtimer_wakeup+0x48/0x60 kernel/time/hrtimer.c:1647
__run_hrtimer kernel/time/hrtimer.c:1398 [inline]
__hrtimer_run_queues+0x3eb/0x10c0 kernel/time/hrtimer.c:1460
hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
smp_apic_timer_interrupt+0x165/0x730 arch/x86/kernel/apic/apic.c:1050
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
</IRQ>
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace 63a513d0f55cc290 ]---
RIP: 0010:task_css include/linux/cgroup.h:477 [inline]
RIP: 0010:task_ca kernel/sched/cpuacct.c:43 [inline]
RIP: 0010:cpuacct_charge+0x1b8/0x5d0 kernel/sched/cpuacct.c:349
Code: 68 ff ff ff 85 c0 74 0d 80 3d 45 31 3c 08 00 0f 84 04 02 00 00 48 b8
00 00 00 00 00 fc ff df 49 8d 7d 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
85 65 03 00 00 4d 8b 65 10 4d 85 e4 0f 84 0a 01 00
RSP: 0018:ffff8801daf072b0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffff8801c72b40c0 RCX: 0000000000000000
RDX: 00000000000009f3 RSI: 00000000ffff8801 RDI: 0000000000004f99
RBP: ffff8801daf07348 R08: 0000000000000000 R09: 0000000000000000
R10: 0000780baf52484d R11: 0000000000000000 R12: 1ffff1003b5e0e5c
R13: 0000000000004f89 R14: dffffc0000000000 R15: 1ffff1003b5e0e58
FS: 00007f4ba8413700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000340 CR3: 00000001cf0ac000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
syzbot.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: general protection fault in cpuacct_charge
2018-07-24 7:27 general protection fault in cpuacct_charge syzbot
@ 2018-07-24 7:29 ` Dmitry Vyukov
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry Vyukov @ 2018-07-24 7:29 UTC (permalink / raw)
To: syzbot; +Cc: LKML, syzkaller-bugs, Thomas Gleixner, Daniel Borkmann
On Tue, Jul 24, 2018 at 9:27 AM, syzbot
<syzbot+a22ee0b9ff4d252439f4@syzkaller.appspotmail.com> wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 8ae71e76cf1f Merge branch 'bpf-offload-sharing'
> git tree: bpf-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=1645f978400000
> kernel config: https://syzkaller.appspot.com/x/.config?x=89129667b46496c3
> dashboard link: https://syzkaller.appspot.com/bug?extid=a22ee0b9ff4d252439f4
> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+a22ee0b9ff4d252439f4@syzkaller.appspotmail.com
#syz fix: bpf: sockhash, disallow bpf_tcp_close and update in parallel
> kasan: CONFIG_KASAN_INLINE enabled
> kasan: GPF could be caused by NULL-ptr deref or user memory access
> general protection fault: 0000 [#1] SMP KASAN
> CPU: 1 PID: 0 Comm: �G+� ���0x������ Not tainted 4.18.0-rc3+ #58
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> RIP: 0010:task_css include/linux/cgroup.h:477 [inline]
> RIP: 0010:task_ca kernel/sched/cpuacct.c:43 [inline]
> RIP: 0010:cpuacct_charge+0x1b8/0x5d0 kernel/sched/cpuacct.c:349
> Code: 68 ff ff ff 85 c0 74 0d 80 3d 45 31 3c 08 00 0f 84 04 02 00 00 48 b8
> 00 00 00 00 00 fc ff df 49 8d 7d 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85
> 65 03 00 00 4d 8b 65 10 4d 85 e4 0f 84 0a 01 00
> RSP: 0018:ffff8801daf072b0 EFLAGS: 00010006
> RAX: dffffc0000000000 RBX: ffff8801c72b40c0 RCX: 0000000000000000
> RDX: 00000000000009f3 RSI: 00000000ffff8801 RDI: 0000000000004f99
> RBP: ffff8801daf07348 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000780baf52484d R11: 0000000000000000 R12: 1ffff1003b5e0e5c
> R13: 0000000000004f89 R14: dffffc0000000000 R15: 1ffff1003b5e0e58
> FS: 00007f4ba8413700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000020000340 CR3: 00000001cf0ac000 CR4: 00000000001406e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
> <IRQ>
> cgroup_account_cputime include/linux/cgroup.h:724 [inline]
> update_curr+0x389/0xc00 kernel/sched/fair.c:832
> enqueue_entity+0x40d/0x2130 kernel/sched/fair.c:4195
> enqueue_task_fair+0x22d/0x910 kernel/sched/fair.c:5408
> enqueue_task kernel/sched/core.c:751 [inline]
> activate_task+0x123/0x2e0 kernel/sched/core.c:770
> ttwu_activate kernel/sched/core.c:1659 [inline]
> ttwu_do_activate+0xd5/0x1f0 kernel/sched/core.c:1718
> ttwu_queue kernel/sched/core.c:1863 [inline]
> try_to_wake_up+0x948/0x12b0 kernel/sched/core.c:2076
> wake_up_process+0x10/0x20 kernel/sched/core.c:2149
> hrtimer_wakeup+0x48/0x60 kernel/time/hrtimer.c:1647
> __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
> __hrtimer_run_queues+0x3eb/0x10c0 kernel/time/hrtimer.c:1460
> hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518
> local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
> smp_apic_timer_interrupt+0x165/0x730 arch/x86/kernel/apic/apic.c:1050
> apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
> </IRQ>
> Modules linked in:
> Dumping ftrace buffer:
> (ftrace buffer empty)
> ---[ end trace 63a513d0f55cc290 ]---
> RIP: 0010:task_css include/linux/cgroup.h:477 [inline]
> RIP: 0010:task_ca kernel/sched/cpuacct.c:43 [inline]
> RIP: 0010:cpuacct_charge+0x1b8/0x5d0 kernel/sched/cpuacct.c:349
> Code: 68 ff ff ff 85 c0 74 0d 80 3d 45 31 3c 08 00 0f 84 04 02 00 00 48 b8
> 00 00 00 00 00 fc ff df 49 8d 7d 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85
> 65 03 00 00 4d 8b 65 10 4d 85 e4 0f 84 0a 01 00
> RSP: 0018:ffff8801daf072b0 EFLAGS: 00010006
> RAX: dffffc0000000000 RBX: ffff8801c72b40c0 RCX: 0000000000000000
> RDX: 00000000000009f3 RSI: 00000000ffff8801 RDI: 0000000000004f99
> RBP: ffff8801daf07348 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000780baf52484d R11: 0000000000000000 R12: 1ffff1003b5e0e5c
> R13: 0000000000004f89 R14: dffffc0000000000 R15: 1ffff1003b5e0e58
> FS: 00007f4ba8413700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000020000340 CR3: 00000001cf0ac000 CR4: 00000000001406e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
> syzbot.
>
> --
> You received this message because you are subscribed to the Google Groups
> "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/syzkaller-bugs/0000000000002a222a0571b9b069%40google.com.
> For more options, visit https://groups.google.com/d/optout.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2018-07-24 7:29 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-07-24 7:27 general protection fault in cpuacct_charge syzbot
2018-07-24 7:29 ` Dmitry Vyukov
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®