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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: 675d, last: 11h47m
▶ ▼ 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 (21)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: rcu detected stall in corrupted origin:upstream missing-backport 1 C inconclusive 3932 5d14h 899d 0/3 upstream: reported C repro on 2023/03/13 04:03
android-414 INFO: rcu detected stall in corrupted 1 C 3 2258d 2331d 0/1 public: reported C repro on 2019/04/10 16:04
android-49 INFO: rcu detected stall in corrupted 1 C 27 2143d 2328d 0/3 public: reported C repro on 2019/04/14 00:00
upstream INFO: rcu detected stall in corrupted (3) kernel 1 C done 1 2347d 2343d 0/29 closed as invalid on 2019/03/30 00:13
linux-4.14 INFO: rcu detected stall in corrupted (2) 1 C error 4 1901d 2062d 0/1 upstream: reported C repro on 2020/01/04 08:54
linux-6.6 INFO: rcu detected stall in corrupted origin:lts-only 1 C done 44 7d05h 65d 0/2 upstream: reported C repro on 2025/06/23 09:19
upstream INFO: rcu detected stall in corrupted (4) tipc 1 C done inconclusive 676 5d12h 1818d 0/29 upstream: reported C repro on 2020/09/04 18:49
upstream INFO: rcu detected stall in corrupted net 1 syz 1 2655d 2655d 8/29 fixed on 2018/07/09 18:05
linux-4.14 INFO: rcu detected stall in corrupted 1 C done 3 2176d 2197d 1/1 fixed on 2019/12/05 23:59
linux-4.19 INFO: rcu detected stall in corrupted 1 C error 2 1315d 2023d 0/1 upstream: reported C repro on 2020/02/13 05:06
upstream INFO: rcu detected stall in corrupted (2) kernel 1 syz 1 2587d 2587d 0/29 closed as invalid on 2018/07/29 11:55
upstream INFO: task hung in exit_aio (4) fs 1 6 258d 323d 0/29 auto-obsoleted due to no activity on 2025/03/13 05:51
android-5-15 BUG: soft lockup in corrupted origin:upstream 1 C error 33 347d 503d 0/2 upstream: reported C repro on 2024/04/11 09:01
upstream BUG: workqueue lockup (5) net 1 C done 13192 12h04m 2052d 0/29 upstream: reported C repro on 2020/01/14 22:04
upstream INFO: task hung in nsim_destroy (4) net 1 429 33d 453d 0/29 upstream: reported on 2024/05/31 11:16
upstream INFO: task hung in reg_process_self_managed_hints wireless 1 C done 836 3d01h 737d 0/29 upstream: reported C repro on 2023/08/21 16:36
linux-4.14 BUG: soft lockup in corrupted 1 C error 12 1123d 1607d 0/1 upstream: reported C repro on 2021/04/04 06:30
upstream INFO: task hung in reg_check_chans_work (7) wireless 1 C error 684 19h19m 338d 0/29 upstream: reported C repro on 2024/09/23 08:39
upstream INFO: task hung in linkwatch_event (4) net 1 C done 3293 5h16m 397d 0/29 upstream: reported C repro on 2024/07/27 06:21
upstream INFO: task hung in uevent_show (2) kernel 1 C inconclusive 8325 53d 291d 29/29 fixed on 2025/07/17 21:22
linux-4.19 BUG: soft lockup in corrupted 1 C error 3 1152d 1340d 0/1 upstream: reported C repro on 2021/12/26 20:46
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/07/03 08:32 13m retest repro linux-5.15.y report log
2025/07/03 08:32 11m retest repro linux-5.15.y report log
2025/07/03 08:32 14m retest repro linux-5.15.y report log
2025/07/03 08:32 13m retest repro linux-5.15.y report log
2025/07/03 08:32 13m retest repro linux-5.15.y report log
2025/06/19 02:01 16m retest repro linux-5.15.y report log
2025/06/19 02:01 41m retest repro linux-5.15.y report log
2025/06/19 02:01 14m retest repro linux-5.15.y report log
2025/06/19 02:01 15m retest repro linux-5.15.y report log
2025/06/19 02:01 18m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (11)
Created Duration User Patch Repo Result
2025/05/30 08:00 21m fix candidate upstream error job log
2025/04/07 17:07 18m fix candidate upstream error job log
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=945/1/0x4000000000000002 softirq=6202/6203 fqs=5250 
	(detected by 1, t=10502 jiffies, g=5769, q=144)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4348 Comm: syz-executor339 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x32/0x60 kernel/kcov.c:206
Code: 94 ab 8a 7e 65 8b 15 95 ab 8a 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 34 16 00 00 00 74 2c 8b 91 10 16 00 00 <83> fa 02 75 21 48 8b 91 18 16 00 00 48 8b 32 48 8d 7e 01 8b 89 14
RSP: 0018:ffffc900032ff220 EFLAGS: 00000046
RAX: ffffffff8196e746 RBX: 0000000000000005 RCX: ffff8880291b5940
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001
RBP: ffff8880b90350d0 R08: dffffc0000000000 R09: ffffed1005236b29
R10: ffffed1005236b29 R11: 1ffff11005236b28 R12: 0000000000000001
R13: ffff888074e637a8 R14: 1ffff1100e9cc6f5 R15: 0000000000000005
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc05c8d40f0 CR3: 000000001f165000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 perf_swevent_event+0x306/0x530 kernel/events/core.c:9609
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10033
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10007
 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 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+0x84/0x480 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 7d 16 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900032ff760 EFLAGS: 00000206
RAX: 0ac63532071cda00 RBX: 1ffff9200065fef0 RCX: 0ac63532071cda00
RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340
RBP: ffffc900032ff830 R08: dffffc0000000000 R09: fffffbfff1ff6e19
R10: fffffbfff1ff6e19 R11: 1ffffffff1ff6e18 R12: ffffffff8c120800
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 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+0xfbc/0x2520 mm/memory.c:1576
 unmap_vmas+0x11b/0x230 mm/memory.c:1653
 exit_mmap+0x38f/0x5f0 mm/mmap.c:3212
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x567/0x6c0 kernel/exit.c:550
 do_exit+0x5a1/0x20a0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 __do_sys_exit_group kernel/exit.c:1008 [inline]
 __se_sys_exit_group kernel/exit.c:1006 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc05c857ef9
Code: Unable to access opcode bytes at RIP 0x7fc05c857ecf.
RSP: 002b:00007fff5c2dc358 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc05c857ef9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007fc05c8d3290 R08: ffffffffffffffb8 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fc05c8d3290
R13: 0000000000000000 R14: 00007fc05c8d3ce0 R15: 00007fc05c829090
 </TASK>

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/27 19:00 linux-5.15.y c79648372d02 e12e5ba4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/25 04:22 linux-5.15.y c79648372d02 bf27483f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/24 05:20 linux-5.15.y c79648372d02 bf27483f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/17 19:46 linux-5.15.y c79648372d02 1804e95e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/07/11 18:04 linux-5.15.y 2f693b607545 3cda49cf .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in corrupted
2025/03/28 13:12 linux-5.15.y 0c935c049b5c 6c09fb82 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in corrupted
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
2025/07/28 13:10 linux-5.15.y c79648372d02 fb8f743d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/07/05 04:18 linux-5.15.y 3dea0e7f549e d869b261 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/05/21 09:35 linux-5.15.y a68c15152131 b47f9e02 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/04/28 03:23 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/04/27 08:04 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/04/26 21:04 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/04/26 17:14 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/04/25 02:17 linux-5.15.y f7347f400572 9882047a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2024/11/10 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
2025/08/26 00:56 linux-5.15.y c79648372d02 bf27483f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/24 19:43 linux-5.15.y c79648372d02 bf27483f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/23 23:02 linux-5.15.y c79648372d02 bf27483f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/23 04:08 linux-5.15.y c79648372d02 bf27483f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/20 19:13 linux-5.15.y c79648372d02 0b9605c8 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/17 07:09 linux-5.15.y c79648372d02 1804e95e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/17 00:46 linux-5.15.y c79648372d02 1804e95e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/10 08:51 linux-5.15.y c79648372d02 32a0e5ed .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2025/08/02 18:36 linux-5.15.y c79648372d02 7368264b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in corrupted
2024/10/01 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
2025/08/03 07:49 linux-5.15.y c79648372d02 7368264b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/07/27 09:49 linux-5.15.y c79648372d02 fb8f743d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/07/25 13:19 linux-5.15.y c79648372d02 fb8f743d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/07/07 11:04 linux-5.15.y 3dea0e7f549e 4f67c4ae .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in corrupted
2025/04/26 09:55 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 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.