INFO: rcu detected stall in corrupted

Status: upstream: reported C repro on 2023/03/13 04:03
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+675efd00db19530582a5@syzkaller.appspotmail.com
First crash: 1265d, last: 18d
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2024/10/26 linux-6.1.y (ToT) 7ec6f9fa3d97 C [report] INFO: rcu detected stall in batadv_nc_worker
2023/12/09 upstream (ToT) f2e8a57ee903 C [report] INFO: rcu detected stall in corrupted
2024/10/26 upstream (ToT) 850925a8133c C Didn't crash
▶ ▼ Similar bugs (24)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 INFO: rcu detected stall in corrupted 1 syz, C 3 2625d 2698d 0/1 public: reported C repro on 2019/04/10 16:04
android-49 INFO: rcu detected stall in corrupted 1 syz, C 27 2510d 2694d 0/3 public: reported C repro on 2019/04/14 00:00
upstream INFO: rcu detected stall in corrupted (3) kernel 1 syz, C done 1 2714d 2709d 0/29 closed as invalid on 2019/03/30 00:13
linux-4.14 INFO: rcu detected stall in corrupted (2) 1 syz, C error 4 2268d 2429d 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 syz, C done 119 11d 432d 0/2 upstream: reported C repro on 2025/06/23 09:19
upstream INFO: rcu detected stall in corrupted (4) prio:low tipc 1 syz, C done inconclusive 842 2d17h 2185d 0/29 upstream: reported C repro on 2020/09/04 18:49
android-6-12 INFO: rcu detected stall in corrupted origin:lts 1 syz 2 187d 307d 0/1 auto-obsoleted due to no activity on 2026/05/24 04:58
upstream INFO: rcu detected stall in corrupted net 1 syz 1 3022d 3022d 8/29 fixed on 2018/07/09 18:05
linux-4.14 INFO: rcu detected stall in corrupted 1 syz, C done 3 2542d 2564d 1/1 fixed on 2019/12/05 23:59
linux-4.19 INFO: rcu detected stall in corrupted 1 syz, C error 2 1682d 2389d 0/1 upstream: reported C repro on 2020/02/13 05:06
upstream INFO: rcu detected stall in corrupted (2) kernel 1 syz 1 2953d 2953d 0/29 closed as invalid on 2018/07/29 11:55
linux-5.15 INFO: rcu detected stall in corrupted origin:lts-only 1 syz, C error 157 13h49m 1041d 0/3 upstream: reported C repro on 2023/10/23 02:41
upstream INFO: task hung in inet_rtm_newaddr prio:normal net 1 syz, C done 167 2h36m 611d 0/29 upstream: reported C repro on 2024/12/26 09:45
upstream INFO: task hung in exit_aio (4) fs 1 6 624d 690d 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 syz, C error 33 713d 870d 0/2 upstream: reported C repro on 2024/04/11 09:01
upstream BUG: workqueue lockup (5) prio:low kernel 1 syz, C done 17643 1h58m 2418d 0/29 upstream: reported C repro on 2020/01/14 22:04
upstream INFO: task hung in nsim_destroy (4) prio:high net 1 syz, C error error 456 3h05m 820d 0/29 upstream: reported C repro on 2024/05/31 11:16
upstream INFO: task hung in hub_port_init (3) prio:low usb 1 syz, C error 1157 22h33m 1250d 0/29 upstream: reported C repro on 2023/03/28 12:23
upstream INFO: task hung in reg_process_self_managed_hints prio:high wireless 1 syz, C done 1332 2h17m 1104d 0/29 upstream: reported C repro on 2023/08/21 16:36
linux-4.14 BUG: soft lockup in corrupted 1 syz, C error 12 1490d 1973d 0/1 upstream: reported C repro on 2021/04/04 06:30
upstream INFO: task hung in reg_check_chans_work (7) prio:normal wireless 1 syz, C error 1263 1h34m 705d 0/29 upstream: reported C repro on 2024/09/23 08:39
upstream INFO: task hung in linkwatch_event (4) prio:low net 1 syz, C done 3822 now 763d 0/29 upstream: reported C repro on 2024/07/27 06:21
upstream INFO: task hung in uevent_show (2) kernel 1 syz, C inconclusive 8325 419d 658d 29/29 fixed on 2025/07/17 21:22
linux-4.19 BUG: soft lockup in corrupted 1 syz, C error 3 1519d 1707d 0/1 upstream: reported C repro on 2021/12/26 20:46
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/05/14 00:00 1h54m fix candidate upstream OK (0) job log

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=7221, q=77 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294955218-4294944717), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g7221 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27888 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1350 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4310 Comm: syz-executor382 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0033:0x7fc14d513710
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 92 b1 06 00 e8 65 ae fd ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007ffd75347f38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fc14d500409
RDX: 00007ffd75347f40 RSI: 00007ffd75348070 RDI: 0000000000000021
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc14d57e0b2
R13: 00007fc14d57c12a R14: 00007ffd75348520 R15: 0000000000000000
FS:  000055555c8803c0 GS:  0000000000000000

Crashes (4055):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/05 16:47 linux-6.1.y fb28aa725e05 52aa2820 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/08/03 04:26 linux-6.1.y fb28aa725e05 e611ffe1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/07/26 14:53 linux-6.1.y dc5c83b7f5f8 492bab15 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/07/25 19:18 linux-6.1.y dc5c83b7f5f8 492bab15 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/07/19 21:58 linux-6.1.y 090666d3cc90 72524a66 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/07/19 02:02 linux-6.1.y 090666d3cc90 72524a66 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/07/19 01:54 linux-6.1.y 090666d3cc90 72524a66 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/07/18 22:26 linux-6.1.y 090666d3cc90 72524a66 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/29 10:38 linux-6.1.y fdb6fcb41cc7 fb92f11c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/06/29 01:46 linux-6.1.y fdb6fcb41cc7 fb92f11c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/22 05:04 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/21 00:44 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/06/20 16:08 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/19 01:12 linux-6.1.y 228da13e907e a776b0d0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/06/15 07:43 linux-6.1.y 228da13e907e 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/15 03:05 linux-6.1.y 228da13e907e 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/15 00:14 linux-6.1.y 228da13e907e 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/14 21:22 linux-6.1.y 228da13e907e 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/14 18:31 linux-6.1.y 228da13e907e 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/06/09 04:15 linux-6.1.y 228da13e907e 656e94c6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/05/30 13:51 linux-6.1.y dcbcab9d7079 6b4a8443 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/04/26 12:51 linux-6.1.y 7c87defbd336 9c2d0995 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/04/03 12:56 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/03/29 23:34 linux-6.1.y 1989cd3d56e2 b5ceaad2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/03/29 19:43 linux-6.1.y 1989cd3d56e2 b5ceaad2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/03/29 11:48 linux-6.1.y 1989cd3d56e2 b5ceaad2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/03/29 09:30 linux-6.1.y 1989cd3d56e2 b5ceaad2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/03/28 23:45 linux-6.1.y 1989cd3d56e2 b5ceaad2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/03/08 15:04 linux-6.1.y f2ddafa93a25 5cb44a80 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/02/23 05:11 linux-6.1.y 779f9571ac3e 6e7b5511 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/22 11:47 linux-6.1.y 779f9571ac3e 6e7b5511 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/21 19:06 linux-6.1.y 779f9571ac3e 6e7b5511 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/14 22:53 linux-6.1.y 8ce36b2849ef 1e62d198 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/14 22:22 linux-6.1.y 8ce36b2849ef 1e62d198 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/08 13:39 linux-6.1.y 0182cb5b74ee 4c131dc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/08 12:05 linux-6.1.y 0182cb5b74ee 4c131dc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2023/12/09 00:13 linux-6.1.y 6c6a6c7e211c 28b24332 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/01/10 13:21 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in corrupted
2023/08/27 05:06 linux-6.1.y cd363bb9548e 7ba13a15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2023/08/01 08:17 linux-6.1.y d2a6dc4eaf6d 2a0d0f29 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/08/11 03:40 linux-6.1.y e4f7d8be268e 508909ea .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/08/01 18:36 linux-6.1.y fb28aa725e05 e611ffe1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/07/19 18:14 linux-6.1.y 090666d3cc90 72524a66 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/07/06 02:58 linux-6.1.y 090666d3cc90 fcece630 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/05/24 07:38 linux-6.1.y dcbcab9d7079 c69befb3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/05/14 16:55 linux-6.1.y ad16b162f21d 6ccb967e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/05/02 17:10 linux-6.1.y 4931e0e1673d a0d91488 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2026/04/22 06:56 linux-6.1.y 7c87defbd336 0b6ab7ec .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/04/13 10:02 linux-6.1.y 8e8fc038cad5 38c8e246 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/22 22:28 linux-6.1.y 779f9571ac3e 6e7b5511 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/21 14:02 linux-6.1.y 779f9571ac3e 6e7b5511 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2023/05/19 01:12 linux-6.1.y fa74641fb6b9 3bb7af1d .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2023/03/13 04:02 linux-6.1.y 1cc3fcf63192 5205ef30 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
* Struck through repros no longer work on HEAD.