syzbot


BUG: unable to handle kernel paging request in check_preempt_wakeup

Status: auto-closed as invalid on 2019/06/27 13:36
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+b0483343ade2f0865c48@syzkaller.appspotmail.com
First crash: 1937d, last: 1937d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in check_preempt_wakeup (2) kernel 1 1671d 1667d 0/26 auto-closed as invalid on 2019/12/20 04:22

Sample crash report:
BUG: unable to handle kernel paging request at ffffdd42000000c4
#PF error: [normal kernel read fault]
PGD 0 P4D 0 
Thread overran stack, or stack corrupted
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: -2124138558 Comm:  Not tainted 4.20.0+ #298
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preempt_wakeup+0x193/0x1280 kernel/sched/fair.c:6819
Code: c1 eb 03 41 80 3c 03 00 0f 85 29 0b 00 00 4c 8b ba d8 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 18 49 89 fb 49 c1 eb 03 <41> 0f b6 04 03 84 c0 74 08 3c 03 0f 8e 40 0a 00 00 41 8b 47 18 48
RSP: 0018:ffff8880ae707678 EFLAGS: 00010802
RAX: dffffc0000000000 RBX: ffff88808dc820c0 RCX: ffff8880ae72ce00
RDX: ffff8880a947e440 RSI: ffff88808dc82040 RDI: ffff0a1000000621
RBP: ffff8880ae707778 R08: ffff8880ae7076d0 R09: ffff8880ae707710
R10: ffff8880ae72cec0 R11: 1fffe142000000c4 R12: ffff8880a947e4c0
R13: ffff8880ae707750 R14: 1ffff11015ce0ed6 R15: ffff0a1000000609
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffdd42000000c4 CR3: 000000005d248000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 check_preempt_curr+0x1ec/0x3a0 kernel/sched/core.c:846
 ttwu_do_wakeup+0x8a/0x6f0 kernel/sched/core.c:1657
 ttwu_do_activate+0x146/0x1f0 kernel/sched/core.c:1703
 ttwu_queue kernel/sched/core.c:1847 [inline]
 try_to_wake_up+0x9a3/0x1460 kernel/sched/core.c:2057
 wake_up_process+0x10/0x20 kernel/sched/core.c:2129
 hrtimer_wakeup+0x48/0x60 kernel/time/hrtimer.c:1637
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1060
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
Modules linked in:
CR2: ffffdd42000000c4
---[ end trace 30948c938efa3e24 ]---
RIP: 0010:check_preempt_wakeup+0x193/0x1280 kernel/sched/fair.c:6819
Code: c1 eb 03 41 80 3c 03 00 0f 85 29 0b 00 00 4c 8b ba d8 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 18 49 89 fb 49 c1 eb 03 <41> 0f b6 04 03 84 c0 74 08 3c 03 0f 8e 40 0a 00 00 41 8b 47 18 48
RSP: 0018:ffff8880ae707678 EFLAGS: 00010802
RAX: dffffc0000000000 RBX: ffff88808dc820c0 RCX: ffff8880ae72ce00
RDX: ffff8880a947e440 RSI: ffff88808dc82040 RDI: ffff0a1000000621
RBP: ffff8880ae707778 R08: ffff8880ae7076d0 R09: ffff8880ae707710
R10: ffff8880ae72cec0 R11: 1fffe142000000c4 R12: ffff8880a947e4c0
R13: ffff8880ae707750 R14: 1ffff11015ce0ed6 R15: ffff0a1000000609
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffdd42000000c4 CR3: 000000005d248000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/12/29 13:35 upstream 903b77c63167 a40793d7 .config console log report ci-upstream-kasan-gce-386
* Struck through repros no longer work on HEAD.