syzbot


BUG: unable to handle kernel paging request in check_preempt_wakeup (2)

Status: auto-closed as invalid on 2019/12/20 04:22
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+644702ab8c16c3e6cf3f@syzkaller.appspotmail.com
First crash: 1673d, last: 1673d
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 kernel 1 1939d 1935d 0/26 auto-closed as invalid on 2019/06/27 13:36

Sample crash report:
BUG: unable to handle page fault for address: fffffffe00000017
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8e70067 P4D 8e70067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preempt_wakeup+0xaa/0x850 kernel/sched/fair.c:6677
Code: bd d8 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 18 48 89 f9 48 c1 e9 03 0f b6 04 01 84 c0 74 08 3c 03 0f 8e 87 06 00 00 <41> 8b 47 18 be 08 00 00 00 4c 89 ef 48 89 55 d0 89 45 cc e8 4e 35
RSP: 0018:ffff8880a990f9c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880a98b8300 RCX: 1fffffffc0000002
RDX: ffff8880a98b8280 RSI: ffff8880a98b8280 RDI: fffffffe00000017
RBP: ffff8880a990fa00 R08: ffff8880ae836220 R09: 1ffffffff0f57bd1
R10: fffffbfff138cfd0 R11: ffffffff89c67e87 R12: ffff8880a98a62c0
R13: ffff8880a98a6240 R14: ffff8880ae835840 R15: fffffffdffffffff
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffe00000017 CR3: 00000000a13a2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 check_preempt_curr+0x153/0x3a0 kernel/sched/core.c:1421
 ttwu_do_wakeup+0x1f/0x580 kernel/sched/core.c:2219
 ttwu_do_activate+0xe1/0x130 kernel/sched/core.c:2265
 ttwu_queue kernel/sched/core.c:2409 [inline]
 try_to_wake_up+0xb23/0x1a80 kernel/sched/core.c:2643
 wake_up_process+0x10/0x20 kernel/sched/core.c:2667
 swake_up_locked.part.0+0x5d/0x190 kernel/sched/swait.c:30
 swake_up_locked kernel/sched/swait.c:26 [inline]
 swake_up_one+0x42/0x60 kernel/sched/swait.c:40
 rcu_gp_kthread_wake kernel/rcu/tree.c:1241 [inline]
 rcu_gp_kthread_wake+0x6d/0xa0 kernel/rcu/tree.c:1232
 rcu_report_qs_rsp+0x6d/0xa0 kernel/rcu/tree.c:1825
 rcu_report_qs_rnp+0x2cd/0x400 kernel/rcu/tree.c:1896
 rcu_report_qs_rdp kernel/rcu/tree.c:1982 [inline]
 rcu_check_quiescent_state kernel/rcu/tree.c:2019 [inline]
 rcu_core+0xe59/0x1560 kernel/rcu/tree.c:2361
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2386
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:603 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595
 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: fffffffe00000017
---[ end trace 1bdfb380ce19435e ]---
RIP: 0010:check_preempt_wakeup+0xaa/0x850 kernel/sched/fair.c:6677
Code: bd d8 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 18 48 89 f9 48 c1 e9 03 0f b6 04 01 84 c0 74 08 3c 03 0f 8e 87 06 00 00 <41> 8b 47 18 be 08 00 00 00 4c 89 ef 48 89 55 d0 89 45 cc e8 4e 35
RSP: 0018:ffff8880a990f9c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880a98b8300 RCX: 1fffffffc0000002
RDX: ffff8880a98b8280 RSI: ffff8880a98b8280 RDI: fffffffe00000017
RBP: ffff8880a990fa00 R08: ffff8880ae836220 R09: 1ffffffff0f57bd1
R10: fffffbfff138cfd0 R11: ffffffff89c67e87 R12: ffff8880a98a62c0
R13: ffff8880a98a6240 R14: ffff8880ae835840 R15: fffffffdffffffff
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffe00000017 CR3: 00000000a13a2000 CR4: 00000000001406e0
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
2019/09/21 04:21 net-next-old b41dae061bbd d96e88f3 .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.