syzbot


BUG: unable to handle kernel paging request in update_blocked_averages

Status: closed as invalid on 2018/07/08 10:08
Subsystems: kernel
[Documentation on labels]
First crash: 2613d, last: 2613d

Sample crash report:
BUG: unable to handle kernel paging request at ffff8801ae53fc40
PGD b4e1067 P4D b4e1067 PUD 1ca6b0063 PMD 19a745063 PTE ffff88019a745be0
Oops: 0000 [#1] SMP KASAN
CPU: 0 PID: 12602 Comm: udevd Not tainted 4.18.0-rc3+ #48
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:update_blocked_averages+0x2bd/0x1770 kernel/sched/fair.c:7657
Code: 00 00 00 b8 00 00 00 00 0f 45 c8 88 8d 2f fd ff ff 4d 8d a5 80 01 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 38 00 0f 85 7d 0c 00 00 <49> 8b 85 80 01 00 00 4d 89 ee 4c 89 a5 18 fd ff ff 4c 8d a8 80 fe 
RSP: 0018:ffff8801dae07838 EFLAGS: 00010046
RAX: 1ffff10035ca7f88 RBX: ffff8801dae07b60 RCX: 0000000000000000
PANIC: double fault, error_code: 0x0
RDX: 1ffff1003841fa48 RSI: 0000000000000000 RDI: ffff8801c20fd648
CPU: 1 PID: 12576 Comm: syz-executor7 Not tainted 4.18.0-rc3+ #48
RBP: ffff8801dae07b88 R08: 0000000000000000 R09: 0000000000000000
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
R10: 0000000000000195 R11: ffff8801ad7748c7 R12: ffff8801ae53fc40
RIP: 0010:__lock_acquire+0x2e/0x5020 kernel/locking/lockdep.c:3294
R13: ffff8801ae53fac0 R14: ffff8801c20fd5c0 R15: dffffc0000000000
Code: 
FS:  00007f2f199587a0(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
41 57 
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
41 
CR2: ffff8801ae53fc40 CR3: 00000001d9680000 CR4: 00000000001406f0
89 cf 
DR0: 00000000200001c0 DR1: 00000000200001c0 DR2: 0000000000000000
41 56 
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
41 55 
Call Trace:
49 
 <IRQ>
89 fd 
41 54 
45 89 
cc 53 
65 4c 
8b 34 
25 40 
ee 01 
00 48 
83 e4 
f0 48 
81 ec 
 run_rebalance_domains+0x350/0x4c0 kernel/sched/fair.c:9883
60 03 
00 00 
48 
8b 45 
 __do_softirq+0x2e8/0xb17 kernel/softirq.c:288
10 <89> 
94 24 
80 00 
00 00 
48 ba 
00 
00 00 
00 00 
fc ff 
df 48 
89 84 
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x1d1/0x200 kernel/softirq.c:408
24 98 
 exiting_irq arch/x86/include/asm/apic.h:527 [inline]
 smp_apic_timer_interrupt+0x186/0x730 arch/x86/kernel/apic/apic.c:1052
RSP: 0018:ffff8801957ffde0 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 1ffff10032b00039 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620
RBP: ffff880195800170 R08: 0000000000000000 R09: 0000000000000000
R10: ffff88019a7af1b8 R11: ffff8801daf236b3 R12: 0000000000000000
R13: ffffffff88f92620 R14: ffff8801d6f5a600 R15: 0000000000000002
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
FS:  00007f92beda4700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
==================================================================
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801957ffdd8 CR3: 00000001c02d4000 CR4: 00000000001406e0
BUG: KASAN: stack-out-of-bounds in update_stack_state+0x5db/0x690 arch/x86/kernel/unwind_frame.c:266
DR0: 0000000020000080 DR1: 0000000020000080 DR2: 0000000000000000
Read of size 8 at addr ffff880196d87150 by task udevd/12602
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/07/08 06:49 bpf-next d90c936fb318 c9a7a4dc .config console log report ci-upstream-bpf-next-kasan-gce
* Struck through repros no longer work on HEAD.