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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: 1135d, last: 8d15h
▶ ▼ 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 (22)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 INFO: rcu detected stall in corrupted 1 C 3 2495d 2568d 0/1 public: reported C repro on 2019/04/10 16:04
android-49 INFO: rcu detected stall in corrupted 1 C 27 2380d 2565d 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 2584d 2580d 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 2138d 2299d 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 112 10d 302d 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 806 10d 2055d 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 57d 178d 0/1 premoderation: reported syz repro on 2025/10/26 00:18
upstream INFO: rcu detected stall in corrupted net 1 syz 1 2892d 2892d 8/29 fixed on 2018/07/09 18:05
linux-4.14 INFO: rcu detected stall in corrupted 1 C done 3 2412d 2434d 1/1 fixed on 2019/12/05 23:59
linux-4.19 INFO: rcu detected stall in corrupted 1 C error 2 1552d 2259d 0/1 upstream: reported C repro on 2020/02/13 05:06
upstream INFO: rcu detected stall in corrupted (2) kernel 1 syz 1 2824d 2824d 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 125 5d16h 911d 0/3 upstream: reported C repro on 2023/10/23 02:41
upstream INFO: task hung in exit_aio (4) fs 1 6 494d 560d 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 584d 740d 0/2 upstream: reported C repro on 2024/04/11 09:01
upstream BUG: workqueue lockup (5) kernel 1 C done 15198 35m 2289d 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 62d 690d 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 1048 7d20h 974d 0/29 upstream: reported C repro on 2023/08/21 16:36
linux-4.14 BUG: soft lockup in corrupted 1 C error 12 1360d 1843d 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 890 9h00m 575d 0/29 upstream: reported C repro on 2024/09/23 08:39
upstream INFO: task hung in linkwatch_event (4) net 1 C done 3513 17h31m 633d 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 290d 528d 29/29 fixed on 2025/07/17 21:22
linux-4.19 BUG: soft lockup in corrupted 1 C error 3 1389d 1577d 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 expedited stalls on CPUs/tasks: { 1-.... } 2650 jiffies s: 1173 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:trace_irq_work_entry arch/x86/include/asm/trace/irq_vectors.h:64 [inline]
RIP: 0010:__sysvec_irq_work+0x53/0x350 arch/x86/kernel/irq_work.c:20
Code: 43 57 a5 00 48 8b 1d ec f4 36 0b 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 26 57 a5 00 bf b0 00 00 00 31 f6 ff 13 <0f> 1f 44 00 00 65 8b 1d 01 f1 d3 7e 48 c7 c0 f0 e0 1f 8e 48 c1 e8
RSP: 0018:ffffc900001e0fd8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff8c651b30 RCX: 000000000000080b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000b0
RBP: 0000000000000000 R08: ffffffff8fa0c048 R09: ffffffff8fa0c058
R10: ffffffff8fa0c050 R11: ffffffff8fa0c043 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5ced654510 CR3: 0000000030e8b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x98/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 d2 33 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001b7860 EFLAGS: 00000206
RAX: 3eda601ee10a7e00 RBX: 1ffff92000036f14 RCX: 3eda601ee10a7e00
RDX: dffffc0000000000 RSI: ffffffff8a8c10a0 RDI: ffffffff8adf0d20
RBP: ffffc900001b7960 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 process_backlog+0x410/0x6f0 net/core/dev.c:6050
 __napi_poll+0xc0/0x460 net/core/dev.c:6616
 napi_poll net/core/dev.c:6683 [inline]
 net_rx_action+0x5dd/0xb20 net/core/dev.c:6797
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 run_ksoftirqd+0xa4/0x100 kernel/softirq.c:968
 smpboot_thread_fn+0x64a/0xa40 kernel/smpboot.c:164
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Crashes (4025):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2026/02/02 01:16 linux-6.1.y cd9b81672742 6b8752f2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/01 21:53 linux-6.1.y cd9b81672742 6b8752f2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/02/01 19:32 linux-6.1.y cd9b81672742 6b8752f2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/01/08 07:13 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/26 13:00 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/22 01:41 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/21 16:58 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/21 06:31 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/21 03:24 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/20 19:58 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/02 18:41 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/11/30 16:12 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/11/27 22:08 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in corrupted
2025/11/25 22:09 linux-6.1.y f6e38ae624cf 64219f15 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/11/25 20:26 linux-6.1.y f6e38ae624cf 64219f15 .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
2026/04/13 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
2026/01/14 14:23 linux-6.1.y bec0e10ee67e d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/01/08 02:57 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/01/04 22:51 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2026/01/02 08:35 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/29 20:16 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/27 08:13 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/26 12:18 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/16 00:47 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/14 16:21 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/14 12:52 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/14 06:00 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/12 01:44 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/02 07:23 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/12/01 13:25 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in corrupted
2025/11/28 18:43 linux-6.1.y f6e38ae624cf d6526ea3 .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.