INFO: rcu detected stall in wb_workfn (2)

Status: upstream: reported C repro on 2025/02/13 22:15
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+78333376e548748b2b68@syzkaller.appspotmail.com
First crash: 610d, last: 8h17m
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/11/18 linux-5.15.y (ToT) cc5ec8769306 C [report] INFO: rcu detected stall in corrupted
2025/11/18 upstream (ToT) 5bebe8de1926 C Didn't crash
▶ ▼ Similar bugs (9)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in wb_workfn (2) fs 1 1 1572d 1572d 0/29 auto-closed as invalid on 2022/09/25 22:53
upstream INFO: rcu detected stall in wb_workfn mm 1 2 1815d 1822d 0/29 auto-closed as invalid on 2022/01/25 21:50
linux-4.19 INFO: rcu detected stall in wb_workfn 1 1 1521d 1521d 0/1 auto-obsoleted due to no activity on 2022/12/16 09:39
linux-6.1 BUG: soft lockup in wb_workfn origin:upstream 1 syz, C error 7 125d 722d 0/3 upstream: reported C repro on 2024/10/24 21:18
upstream INFO: rcu detected stall in wb_workfn (3) ext4 block hfs 1 3 1153d 1236d 0/29 auto-obsoleted due to no activity on 2023/11/18 21:40
linux-5.15 INFO: rcu detected stall in wb_workfn origin:lts-only 1 syz error 4 738d 809d 0/3 auto-obsoleted due to no activity on 2025/01/21 00:06
upstream INFO: rcu detected stall in wb_workfn (4) prio:normal ext4 1 syz, C error error 78 6d14h 463d 0/29 upstream: reported C repro on 2025/07/11 13:28
linux-4.14 INFO: rcu detected stall in wb_workfn 1 1 2554d 2554d 0/1 auto-closed as invalid on 2020/02/17 08:22
upstream BUG: soft lockup in wb_workfn kernel 1 1 2622d 2618d 0/29 auto-closed as invalid on 2019/11/11 12:45
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/04/17 04:06 16m retest repro linux-5.15.y report log
2026/04/17 04:06 17m retest repro linux-5.15.y report log
2026/04/17 04:06 24m retest repro linux-5.15.y report log
2026/04/17 04:06 15m retest repro linux-5.15.y report log
2026/04/17 02:19 17m retest repro linux-5.15.y report log
2026/04/17 02:19 16m retest repro linux-5.15.y report log
2026/04/17 02:19 18m retest repro linux-5.15.y report log
2026/04/17 02:19 24m retest repro linux-5.15.y report log
2026/04/17 02:19 15m retest repro linux-5.15.y no crash log
2026/04/16 19:38 16m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (7)
Created Duration User Patch Repo Result
2026/07/25 16:16 37m fix candidate upstream error job log
2026/05/25 13:44 18m fix candidate upstream error job log
2026/03/27 04:43 1m fix candidate upstream error job log
2026/02/24 00:27 1m fix candidate upstream error job log
2026/01/24 06:13 1m fix candidate upstream error job log
2025/06/29 19:05 1m fix candidate upstream error job log
2025/03/27 02:48 16m fix candidate upstream error job log

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P155/1:b..l
	(detected by 1, t=10503 jiffies, g=8185, q=231)
task:kworker/u4:3    state:R  running task     stack:21216 pid:  155 ppid:     2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 kernel/sched/core.c:6395
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799
 irqentry_exit+0x63/0x70 kernel/entry/common.c:435
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:71 [inline]
RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
RIP: 0010:lock_page_memcg+0x240/0x440 mm/memcontrol.c:2062
Code: 00 00 9c 8f 44 24 40 f7 44 24 40 00 02 00 00 c6 44 01 04 f8 0f 85 ff 00 00 00 f7 c3 00 02 00 00 74 01 fb 4d 8d af 80 10 00 00 <4c> 89 ef be 04 00 00 00 e8 b3 8b fb ff 4c 89 e8 48 c1 e8 03 48 b9
RSP: 0018:ffffc90002026c40 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 1ffff92000404d8c
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a48c0
RBP: ffffc90002026d10 R08: ffffffff901f116f R09: 1ffffffff203e22d
R10: dffffc0000000000 R11: fffffbfff203e22e R12: ffff88814077c670
R13: ffff88814077d080 R14: ffffea0001bc5a78 R15: ffff88814077c000
 __test_set_page_writeback+0xa2/0xec0 mm/page-writeback.c:2844
 ext4_bio_write_page+0x298/0x1f20 fs/ext4/page-io.c:-1
 mpage_submit_page+0x17a/0x210 fs/ext4/inode.c:2115
 mpage_map_and_submit_buffers fs/ext4/inode.c:2363 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2502 [inline]
 ext4_writepages+0x1970/0x2d40 fs/ext4/inode.c:2831
 do_writepages+0x493/0x700 mm/page-writeback.c:2386
 __writeback_single_inode+0x153/0xda0 fs/fs-writeback.c:1657
 writeback_sb_inodes+0xaaa/0x1750 fs/fs-writeback.c:1940
 __writeback_inodes_wb+0x12a/0x3f0 fs/fs-writeback.c:2011
 wb_writeback+0x45e/0xbc0 fs/fs-writeback.c:2116
 wb_check_old_data_flush fs/fs-writeback.c:2216 [inline]
 wb_do_writeback fs/fs-writeback.c:2269 [inline]
 wb_workfn+0xb15/0xf20 fs/fs-writeback.c:2298
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: rcu_preempt kthread starved for 10542 jiffies! g8185 f0x0 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:27440 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
 rcu_gp_fqs_loop+0x2be/0x11f0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9a/0x370 kernel/rcu/tree.c:2145
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4384 Comm: syz.1.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rcu_is_watching+0x63/0xa0 kernel/rcu/tree.c:1124
Code: 89 f7 e8 20 93 59 00 48 c7 c3 08 b3 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 2b 8b 03 65 ff 0d 65 ba 9d 7e <74> 08 24 01 5b 41 5e 41 5f c3 e8 b6 c7 9b ff eb f1 48 c7 c7 e0 3b
RSP: 0018:ffffc9000344fa40 EFLAGS: 00000286
RAX: 000000000000c169 RBX: ffff8880b903b308 RCX: fdae85b5233abf00
RDX: 0000000000000000 RSI: ffffffff8a7a48a0 RDI: ffffffff8a7a4860
RBP: ffffc9000344fb80 R08: ffffffff8d8b1eef R09: 1ffffffff1b163dd
R10: dffffc0000000000 R11: fffffbfff1b163de R12: ffff888023d7f828
R13: 1ffff92000689f58 R14: ffffffff8be3f820 R15: dffffc0000000000
FS:  000055557352d500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 00000000755c8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0xc8/0x400 kernel/locking/lockdep.c:5596
 __might_fault+0xb3/0x110 mm/memory.c:5357
 _copy_from_user+0x29/0x170 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:192 [inline]
 restore_altstack+0xa8/0x380 kernel/signal.c:4265
 __ia32_sys_rt_sigreturn+0x624/0x750 arch/x86/kernel/signal.c:677
 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: 0033:0x7f1f81358157
Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 <0f> 05 48 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89
RSP: 002b:00007fff070c60c8 EFLAGS: 00000246
RAX: 0000000000000028 RBX: 00007f1f815dffa0 RCX: 00007f1f81358159
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00007f1f813ef06b R08: 0000000000000000 R09: 0000000000000000
R10: 0000020000023896 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1f815dffac R14: 00007f1f815dffa0 R15: 00007f1f815dffa0
 </TASK>

Crashes (144):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/27 03:46 linux-5.15.y 0248c33e835e a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in wb_workfn
2025/11/17 09:37 linux-5.15.y cc5ec8769306 f7988ea4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/04/21 10:45 linux-5.15.y f7347f400572 2a20f901 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in wb_workfn
2026/10/17 07:35 linux-5.15.y 792fbe1537d8 432c0077 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/04 01:45 linux-5.15.y a051a4bf909f 57bbd979 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/28 20:58 linux-5.15.y 0248c33e835e a3c7249d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/21 21:24 linux-5.15.y 0248c33e835e 853b104b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/20 10:09 linux-5.15.y 0248c33e835e 853b104b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/11 05:03 linux-5.15.y 0996e0926f6b 1fe56c0a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/27 02:39 linux-5.15.y 945fa863f02c a2b77b9e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/25 07:56 linux-5.15.y 945fa863f02c 614e416a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/22 03:39 linux-5.15.y 0eb903b5b519 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/16 02:10 linux-5.15.y aabd761612db 746171ee .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/07/27 06:24 linux-5.15.y 674f684f7c61 492bab15 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/07/25 18:07 linux-5.15.y 674f684f7c61 492bab15 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/24 19:49 linux-5.15.y eceeec79dbc6 302586aa .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/24 03:34 linux-5.15.y eceeec79dbc6 042555ff .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/04 18:20 linux-5.15.y dc027a595035 197909be .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/02 07:30 linux-5.15.y dc027a595035 1095583b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/05/18 06:31 linux-5.15.y 93741761e5e3 de5aae85 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/05/17 17:24 linux-5.15.y 93741761e5e3 de5aae85 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/02/15 16:43 linux-5.15.y e45d5d41c134 1e62d198 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/02/09 05:23 linux-5.15.y 7b232985052f 4c131dc4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/01/25 10:34 linux-5.15.y 9eec9a14ee10 40acda8a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/01/23 00:53 linux-5.15.y 9eec9a14ee10 82c9c083 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/01/10 22:53 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/01/09 08:34 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/01/03 20:02 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/12/30 10:18 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/12/29 09:29 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/12/19 10:20 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/12/12 13:48 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/11/26 00:39 linux-5.15.y cc5ec8769306 64219f15 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/11/16 12:17 linux-5.15.y cc5ec8769306 f7988ea4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/11/15 21:15 linux-5.15.y cc5ec8769306 f7988ea4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/11/09 16:01 linux-5.15.y cc5ec8769306 4e1406b4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/10/27 23:59 linux-5.15.y ac56c046adf4 fd2207e7 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/09/18 23:34 linux-5.15.y 43bb85222e53 e2beed91 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/09/17 20:11 linux-5.15.y 43bb85222e53 e2beed91 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/07/05 18:50 linux-5.15.y 3dea0e7f549e 4f67c4ae .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/05/29 23:52 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in wb_workfn
2025/02/13 22:14 linux-5.15.y c16c81c81336 a98a8417 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/16 06:16 linux-5.15.y 792fbe1537d8 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/15 07:28 linux-5.15.y a051a4bf909f 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/14 23:58 linux-5.15.y a051a4bf909f 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/07 15:24 linux-5.15.y a051a4bf909f 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/07 01:55 linux-5.15.y a051a4bf909f f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/06 20:47 linux-5.15.y a051a4bf909f f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/10/03 09:44 linux-5.15.y 0248c33e835e 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/30 09:58 linux-5.15.y 0248c33e835e 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/28 11:31 linux-5.15.y 0248c33e835e a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/26 14:46 linux-5.15.y 0248c33e835e a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/22 14:26 linux-5.15.y 0248c33e835e e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/17 13:11 linux-5.15.y 0248c33e835e 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/10 03:56 linux-5.15.y 0996e0926f6b 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/07 10:55 linux-5.15.y 0996e0926f6b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/07 01:46 linux-5.15.y 0996e0926f6b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/09/03 15:18 linux-5.15.y 0996e0926f6b 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/30 15:52 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/30 14:50 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/26 21:47 linux-5.15.y 945fa863f02c a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/24 01:45 linux-5.15.y 945fa863f02c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/12 13:49 linux-5.15.y aabd761612db f8d35649 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/08/10 01:12 linux-5.15.y aabd761612db 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/07/27 23:02 linux-5.15.y 674f684f7c61 aae9036b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in wb_workfn
2026/07/27 16:41 linux-5.15.y 674f684f7c61 aae9036b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/30 05:38 linux-5.15.y eceeec79dbc6 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/13 02:55 linux-5.15.y dc027a595035 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/09 14:26 linux-5.15.y dc027a595035 c36c07f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/07 15:00 linux-5.15.y dc027a595035 cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/05 05:33 linux-5.15.y dc027a595035 197909be .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/06/03 16:04 linux-5.15.y dc027a595035 234057e5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/05/30 23:34 linux-5.15.y 241d66fa280c 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/05/28 20:25 linux-5.15.y 241d66fa280c 681715f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/05/28 19:21 linux-5.15.y 241d66fa280c 681715f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/05/26 00:40 linux-5.15.y 241d66fa280c c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/05/17 22:03 linux-5.15.y 93741761e5e3 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/04/30 02:42 linux-5.15.y b9d57c40a767 005438fc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/04/22 19:26 linux-5.15.y b9d57c40a767 4595e353 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/04/21 09:21 linux-5.15.y b9d57c40a767 3f2e655b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/04/20 05:21 linux-5.15.y b9d57c40a767 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/04/18 21:23 linux-5.15.y b9d57c40a767 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/04/01 18:51 linux-5.15.y 91d48252ad4b 9a1f7828 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/03/25 17:36 linux-5.15.y 91d48252ad4b 8ee77f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/03/23 11:15 linux-5.15.y 91d48252ad4b 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/03/22 15:21 linux-5.15.y 91d48252ad4b 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2026/02/14 07:26 linux-5.15.y e45d5d41c134 1e62d198 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/12/26 02:00 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/10/12 18:15 linux-5.15.y 29e53a5b1c4f ff1712fe .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in wb_workfn
2025/04/27 06:10 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in wb_workfn
* Struck through repros no longer work on HEAD.