syzbot


INFO: rcu detected stall in corrupted

Status: upstream: reported C repro on 2023/10/23 02:41
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+db961afbd39afc2637c9@syzkaller.appspotmail.com
First crash: 474d, last: 6d18h
Bug presence (2)
Date Name Commit Repro Result
2023/11/07 linux-5.15.y (ToT) 12952a23a5da C [report] INFO: rcu detected stall in corrupted
2023/11/07 upstream (ToT) 13d88ac54ddd C Didn't crash
Similar bugs (18)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: rcu detected stall in corrupted origin:upstream missing-backport C 3866 6d07h 698d 0/3 upstream: reported C repro on 2023/03/13 04:03
android-414 INFO: rcu detected stall in corrupted C 3 2058d 2131d 0/1 public: reported C repro on 2019/04/10 16:04
android-49 INFO: rcu detected stall in corrupted C 27 1943d 2127d 0/3 public: reported C repro on 2019/04/14 00:00
upstream INFO: rcu detected stall in corrupted (3) kernel C done 1 2146d 2142d 0/28 closed as invalid on 2019/03/30 00:13
linux-4.14 INFO: rcu detected stall in corrupted (2) C error 4 1701d 1862d 0/1 upstream: reported C repro on 2020/01/04 08:54
upstream INFO: rcu detected stall in corrupted (4) net mm C done inconclusive 637 2d13h 1618d 0/28 upstream: reported C repro on 2020/09/04 18:49
upstream INFO: rcu detected stall in corrupted net syz 1 2455d 2455d 8/28 fixed on 2018/07/09 18:05
linux-4.14 INFO: rcu detected stall in corrupted C done 3 1975d 1997d 1/1 fixed on 2019/12/05 23:59
linux-4.19 INFO: rcu detected stall in corrupted C error 2 1115d 1822d 0/1 upstream: reported C repro on 2020/02/13 05:06
upstream INFO: rcu detected stall in corrupted (2) kernel syz 1 2386d 2386d 0/28 closed as invalid on 2018/07/29 11:55
android-5-15 BUG: soft lockup in corrupted origin:upstream C error 33 146d 303d 0/2 upstream: reported C repro on 2024/04/11 09:01
upstream BUG: workqueue lockup (5) kernel C done 11355 25m 1851d 0/28 upstream: reported C repro on 2020/01/14 22:04
upstream INFO: task hung in nsim_destroy (4) net 418 10d 253d 0/28 upstream: reported on 2024/05/31 11:16
upstream INFO: task hung in reg_process_self_managed_hints wireless C done 205 6h50m 537d 0/28 upstream: reported C repro on 2023/08/21 16:36
linux-4.14 BUG: soft lockup in corrupted C error 12 923d 1406d 0/1 upstream: reported C repro on 2021/04/04 06:30
upstream INFO: task hung in reg_check_chans_work (7) wireless C error 376 13h31m 138d 0/28 upstream: reported C repro on 2024/09/23 08:39
upstream INFO: task hung in uevent_show (2) kernel C inconclusive 5836 7m 91d 0/28 upstream: reported C repro on 2024/11/09 14:37
linux-4.19 BUG: soft lockup in corrupted C error 3 952d 1139d 0/1 upstream: reported C repro on 2021/12/26 20:46
Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/02/02 01:36 11m retest repro linux-5.15.y report log
2025/02/02 01:36 15m retest repro linux-5.15.y OK log
2025/01/31 16:14 11m retest repro linux-5.15.y report log
2025/01/31 16:14 12m retest repro linux-5.15.y report log
2025/01/31 16:14 57m retest repro linux-5.15.y report log
2025/01/17 13:43 15m retest repro linux-5.15.y report log
2025/01/17 13:43 1h05m retest repro linux-5.15.y report log
2025/01/17 13:43 17m retest repro linux-5.15.y report log
2024/12/22 06:42 16m retest repro linux-5.15.y report log
2024/12/22 06:42 13m retest repro linux-5.15.y report log
Fix bisection attempts (9)
Created Duration User Patch Repo Result
2025/02/03 02:39 21m fix candidate upstream error job log
2024/12/29 07:29 21m fix candidate upstream error job log
2024/09/17 22:19 17m fix candidate upstream error job log
2024/08/04 13:17 17m fix candidate upstream error job log
2024/03/14 15:27 17m fix candidate upstream error job log
2024/01/14 22:18 17m fix candidate upstream error job log
2023/12/15 21:59 17m fix candidate upstream error job log
2023/11/15 07:07 17m fix candidate upstream error job log
2023/10/25 04:15 14m fix candidate upstream error job log

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=cbb/1/0x4000000000000002 softirq=10334/10335 fqs=2099 
	(detected by 1, t=10505 jiffies, g=16101, q=104672)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11445 Comm: syz-executor334 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:202
Code: 1f 84 00 00 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 dd 89 0c 48 89 de 5b e9 07 05 49 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0d d4 ea 81 7e 65 8b 15 d5 ea 81 7e 81 e2 00
RSP: 0018:ffffc900104971d8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff8a600e46 RCX: ffffffff81870407
RDX: ffff888077d6bb80 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8187044f R09: fffffbfff1c14c0e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe086cc2e78 CR3: 0000000073875000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 trace_irq_enable_rcuidle+0xb0/0x190 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x520 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 6d 82 96 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a
RSP: 0018:ffffc900104972c0 EFLAGS: 00000206
RAX: 20722b8475af1200 RBX: 1ffff92002092e60 RCX: ffffffff81633db8
RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: ffffffff8af9f000
RBP: ffffc90010497398 R08: dffffc0000000000 R09: fffffbfff2131221
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8cb23d00
R13: ffff888077d6bfd8 R14: ffffc90010497300 R15: 1ffff92002092e5c
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __unlock_page_memcg+0xfd/0x110 mm/memcontrol.c:2090
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xffa/0x2630 mm/memory.c:1576
 unmap_vmas+0x1f8/0x390 mm/memory.c:1653
 exit_mmap+0x3b6/0x620 mm/mmap.c:3204
 __mmput+0x112/0x3b0 kernel/fork.c:1127
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 get_signal+0xc66/0x14e0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe086c6c819
Code: Unable to access opcode bytes at RIP 0x7fe086c6c7ef.
RSP: 002b:00007fe086c2d238 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fe086cf6308 RCX: 00007fe086c6c819
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe086cf630c
RBP: 00007fe086cf6300 R08: 00007fe086c2d6c0 R09: 00007fe086c2d6c0
R10: 00007fe086c2d6c0 R11: 0000000000000246 R12: 00007fe086cc3270
R13: 0000000000000000 R14: 00007ffedb917270 R15: 00007ffedb917358
 </TASK>

Crashes (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/03 11:51 linux-5.15.y 91786f140358 d3ccff63 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2024/10/08 02:00 linux-5.15.y 3a5928702e71 d7906eff .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2024/08/31 09:19 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 corrupted
2024/06/24 07:42 linux-5.15.y 4878aadf2d15 edc5149a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in corrupted
2024/03/15 19:00 linux-5.15.y 574362648507 d615901c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in corrupted
2024/02/02 07:20 linux-5.15.y 6139f2a02fe0 d61103fc .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2023/11/07 21:03 linux-5.15.y 12952a23a5da 83211397 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2024/11/10 00:20 linux-5.15.y 3c17fc483905 6b856513 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2024/10/20 01:39 linux-5.15.y 584a40a22cb9 cd6fc0a3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2024/09/18 15:17 linux-5.15.y 3a5928702e71 c673ca06 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2024/10/01 01:20 linux-5.15.y 3a5928702e71 bbd4e0a4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2024/09/29 05:45 linux-5.15.y 3a5928702e71 ba29ff75 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2024/10/11 03:21 linux-5.15.y 3a5928702e71 8fbfc0c8 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2023/10/23 02:41 linux-5.15.y 00c03985402e 361b23dc .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2024/12/07 10:29 linux-5.15.y 0a51d2d4527b 9ac0fdc6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
* Struck through repros no longer work on HEAD.