syzbot

 sign-in | mailing list | source | docs
🐞 Open [681]
🐞 Fixed [69]
🐞 Invalid [841]
⬇ Missing Backports [102]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

BUG: soft lockup in do_idle

Status: upstream: reported C repro on 2023/05/29 19:14
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+633b0e027cd92402692b@syzkaller.appspotmail.com
First crash: 693d, last: 5h51m
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2023/05/30 upstream (ToT) 8b817fded42d C [report] BUG: soft lockup in gc_worker
▶ ▼ Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in do_idle acpi C done error 3023 now 2382d 0/28 upstream: reported C repro on 2018/10/13 07:31
linux-6.1 BUG: soft lockup in do_idle origin:upstream C 40 3d07h 681d 0/3 upstream: reported C repro on 2023/06/10 08:51
linux-4.19 INFO: rcu detected stall in do_idle (2) 2 1091d 1091d 0/1 auto-closed as invalid on 2022/08/24 07:48
linux-4.14 INFO: rcu detected stall in do_idle (2) C error 4 966d 1095d 0/1 upstream: reported C repro on 2022/04/22 10:09
android-414 INFO: rcu detected stall in do_idle 1 2411d 2411d 0/1 auto-closed as invalid on 2019/03/13 10:31
linux-4.19 INFO: rcu detected stall in do_idle 1 1950d 1950d 0/1 auto-closed as invalid on 2020/04/18 00:25
linux-4.14 INFO: rcu detected stall in do_idle 4 2044d 2050d 0/1 auto-closed as invalid on 2020/01/14 08:59
▶ ▼ Last patch testing requests (8)
Created Duration User Patch Repo Result
2025/01/19 17:06 31m retest repro linux-5.15.y report log
2025/01/19 17:06 11m retest repro linux-5.15.y report log
2025/01/19 17:06 12m retest repro linux-5.15.y report log
2025/01/19 17:06 20m retest repro linux-5.15.y report log
2025/01/19 17:06 12m retest repro linux-5.15.y report log
2025/01/19 13:57 14m retest repro linux-5.15.y report log
2025/01/19 13:57 12m retest repro linux-5.15.y report log
2025/01/19 13:57 11m retest repro linux-5.15.y report log

Sample crash report:
hrtimer: interrupt took 1326000 ns
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:0]
Modules linked in:
irq event stamp: 783146
hardirqs last  enabled at (783145): [<ffff800011a70304>] default_idle_call+0xb8/0x4a8 kernel/sched/idle.c:109
hardirqs last disabled at (783146): [<ffff80001199ab70>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (783128): [<ffff800008021c64>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (783128): [<ffff800008021c64>] __do_softirq+0xb5c/0xdb0 kernel/softirq.c:587
softirqs last disabled at (783095): [<ffff8000081b6568>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (783095): [<ffff8000081b6568>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (783095): [<ffff8000081b6568>] __irq_exit_rcu+0x264/0x4d4 kernel/softirq.c:637
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:44
lr : arch_cpu_idle+0x14/0x20 arch/arm64/kernel/idle.c:45
sp : ffff8000148c7cb0
x29: ffff8000148c7cb0 x28: dfff800000000000 x27: 1ffff00002918fa4
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000001
x23: 1ffff00002929a62 x22: 0000000000000000 x21: dfff800000000000
x20: ffff80001494d310 x19: ffff800014973e00 x18: 1fffe000368fd38e
x17: 1fffe000368fd38e x16: ffff800008060f5c x15: ffff8000149eec00
x14: 1ffff0000292a06a x13: dfff800000000000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80001199bcd4
x2 : 0000000000000001 x1 : ffff800011aead00 x0 : ffff80019ff47000
Call trace:
 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35
 default_idle_call+0xcc/0x4a8 kernel/sched/idle.c:112
 cpuidle_idle_call kernel/sched/idle.c:194 [inline]
 do_idle+0x1d4/0x4dc kernel/sched/idle.c:306
 cpu_startup_entry+0x24/0x28 kernel/sched/idle.c:403
 rest_init+0x364/0x38c init/main.c:741
 arch_call_rest_init+0x14/0x20 init/main.c:893
 start_kernel+0x440/0x600 init/main.c:1140
 __primary_switched+0xa8/0xb0 arch/arm64/kernel/head.S:468

Crashes (341):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/26 17:15 linux-5.15.y c61bd26ae81a a10a183e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2024/05/16 11:09 linux-5.15.y 284087d4f7d5 ef5d53ed .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2024/03/26 17:52 linux-5.15.y b95c01af2113 bcd9b39f .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2024/03/20 06:51 linux-5.15.y b95c01af2113 a485f239 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2024/03/14 20:29 linux-5.15.y 574362648507 8d8ee116 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2024/03/06 03:43 linux-5.15.y 80efc6265290 f39a7eed .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2023/05/29 19:13 linux-5.15.y 1fe619a7d252 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2023/06/11 10:58 linux-5.15.y 7349e40704a0 49519f06 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2025/01/31 07:02 linux-5.15.y 003148680b79 4c6ac32f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/11/04 14:42 linux-5.15.y 72244eab0dad f00eed24 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/11/04 06:09 linux-5.15.y 72244eab0dad f00eed24 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/11/03 04:32 linux-5.15.y 72244eab0dad f00eed24 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/10/31 20:59 linux-5.15.y 74cdd62cb470 96eb609f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/09/01 04:32 linux-5.15.y fa93fa65db6e 1eda0d14 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/08/04 22:37 linux-5.15.y 7e89efd3ae1c 1786a2a8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/06/06 18:35 linux-5.15.y c61bd26ae81a 121701b6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/05/26 14:50 linux-5.15.y c61bd26ae81a a10a183e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/04/26 03:18 linux-5.15.y c52b9710c83d 8bdc0f22 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in do_idle
2024/04/19 21:10 linux-5.15.y c52b9710c83d af24b050 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2024/04/19 16:30 linux-5.15.y c52b9710c83d af24b050 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2023/11/22 04:19 linux-5.15.y 2a910f4af54d cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2023/08/23 09:04 linux-5.15.y f6f7927ac664 b81ca3f6 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2023/07/16 13:12 linux-5.15.y d54cfc420586 35d9ecc5 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2023/06/02 21:02 linux-5.15.y 0ab06468cbd1 a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2023/06/24 12:34 linux-5.15.y f67653019430 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in do_idle
2023/06/06 23:13 linux-5.15.y d7af3e5ba454 a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in do_idle
2023/06/03 05:54 linux-5.15.y 0ab06468cbd1 a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in do_idle
2025/04/19 15:26 linux-5.15.y f7347f400572 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in do_idle
2025/02/12 07:08 linux-5.15.y c16c81c81336 f2baddf5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in do_idle
2025/04/21 19:50 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/20 23:30 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/18 02:06 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/17 20:53 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/17 19:14 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/16 02:48 linux-5.15.y f7347f400572 a95239b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/15 16:53 linux-5.15.y f7347f400572 23b969b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/14 19:56 linux-5.15.y f7347f400572 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/13 01:46 linux-5.15.y f7347f400572 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/10 20:50 linux-5.15.y f7347f400572 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/10 02:34 linux-5.15.y 0c935c049b5c 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/09 14:12 linux-5.15.y 0c935c049b5c 47d015b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/08 15:41 linux-5.15.y 0c935c049b5c a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/07 21:30 linux-5.15.y 0c935c049b5c a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/06 09:21 linux-5.15.y 0c935c049b5c 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/05 11:38 linux-5.15.y 0c935c049b5c c53ea9c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/05 10:48 linux-5.15.y 0c935c049b5c c53ea9c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/04/04 14:26 linux-5.15.y 0c935c049b5c 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/31 18:15 linux-5.15.y 0c935c049b5c d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/31 03:34 linux-5.15.y 0c935c049b5c d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/27 19:03 linux-5.15.y 0c935c049b5c 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/27 06:38 linux-5.15.y 0c935c049b5c 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/22 21:44 linux-5.15.y 0c935c049b5c c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/22 00:48 linux-5.15.y 0c935c049b5c c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/20 18:22 linux-5.15.y 0c935c049b5c 9209bc22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/20 12:48 linux-5.15.y 0c935c049b5c 9209bc22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/20 09:13 linux-5.15.y 0c935c049b5c 9209bc22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/19 13:44 linux-5.15.y 0c935c049b5c 8d0a2921 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/19 10:31 linux-5.15.y 0c935c049b5c 8d0a2921 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/18 20:37 linux-5.15.y 0c935c049b5c 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/18 02:51 linux-5.15.y 0c935c049b5c ce3352cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/18 01:25 linux-5.15.y 0c935c049b5c ce3352cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/15 16:18 linux-5.15.y 0c935c049b5c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/10 18:44 linux-5.15.y c16c81c81336 16256247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/08 19:24 linux-5.15.y c16c81c81336 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/07 19:12 linux-5.15.y c16c81c81336 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/06 20:35 linux-5.15.y c16c81c81336 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/03/02 14:38 linux-5.15.y c16c81c81336 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/02/28 12:49 linux-5.15.y c16c81c81336 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/02/28 11:20 linux-5.15.y c16c81c81336 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/02/26 13:06 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
2025/02/24 15:34 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in do_idle
* Struck through repros no longer work on HEAD.