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INFO: rcu detected stall in corrupted

Status: premoderation: reported syz repro on 2025/10/26 00:18
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+6e6401f532693645ef7a@syzkaller.appspotmail.com
First crash: 144d, last: 24d
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/10/27 lts (merge base) b0c51e95f54e syz [report] INFO: task hung in rtnl_lock
2025/10/27 upstream (ToT) dcb6fa37fd7b syz Didn't crash
▶ ▼ Similar bugs (22)
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 4018 10d 1102d 0/3 upstream: reported C repro on 2023/03/13 04:03
android-414 INFO: rcu detected stall in corrupted 1 C 3 2461d 2534d 0/1 public: reported C repro on 2019/04/10 16:04
android-49 INFO: rcu detected stall in corrupted 1 C 27 2346d 2531d 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 2550d 2546d 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 2104d 2265d 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 110 11d 268d 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 802 2d11h 2021d 0/29 upstream: reported C repro on 2020/09/04 18:49
upstream INFO: rcu detected stall in corrupted net 1 syz 1 2859d 2858d 8/29 fixed on 2018/07/09 18:05
linux-4.14 INFO: rcu detected stall in corrupted 1 C done 3 2379d 2401d 1/1 fixed on 2019/12/05 23:59
linux-4.19 INFO: rcu detected stall in corrupted 1 C error 2 1518d 2226d 0/1 upstream: reported C repro on 2020/02/13 05:06
upstream INFO: rcu detected stall in corrupted (2) kernel 1 syz 1 2790d 2790d 0/29 closed as invalid on 2018/07/29 11:55
linux-5.15 INFO: rcu detected stall in corrupted origin:lts-only 1 C error 118 1d02h 878d 0/3 upstream: reported C repro on 2023/10/23 02:41
upstream INFO: task hung in exit_aio (4) fs 1 6 461d 526d 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 550d 706d 0/2 upstream: reported C repro on 2024/04/11 09:01
upstream BUG: workqueue lockup (5) kernel 1 C done 15135 48m 2255d 0/29 upstream: reported C repro on 2020/01/14 22:04
upstream INFO: task hung in nsim_destroy (4) net 1 syz error error 436 28d 656d 0/29 upstream: reported syz repro on 2024/05/31 11:16
upstream INFO: task hung in reg_process_self_managed_hints wireless 1 C done 1046 5d05h 940d 0/29 upstream: reported C repro on 2023/08/21 16:36
linux-4.14 BUG: soft lockup in corrupted 1 C error 12 1326d 1810d 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 869 2d18h 541d 0/29 upstream: reported C repro on 2024/09/23 08:39
upstream INFO: task hung in linkwatch_event (4) net 1 C done 3477 3d10h 600d 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 256d 494d 29/29 fixed on 2025/07/17 21:22
linux-4.19 BUG: soft lockup in corrupted 1 C error 3 1355d 1543d 0/1 upstream: reported C repro on 2021/12/26 20:46
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2026/03/09 06:27 13m retest repro android16-6.12 OK log
2026/01/18 02:59 3m retest repro android16-6.12 error
2025/11/09 02:43 3m retest repro android16-6.12 error

Sample crash report:
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 1-....
 } 10250 jiffies s: 2929 root: 0x0/.
rcu: blocking rcu_node structures (internal RCU debug):

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/26 00:17 android16-6.12 0d6730ee6542 c0460fcd .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: rcu detected stall in corrupted
2026/02/23 04:57 android16-6.12 c190014704c7 6e7b5511 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: rcu detected stall in corrupted
* Struck through repros no longer work on HEAD.