INFO: rcu detected stall in sock_write

Date	Name	Commit	Repro	Result
2025/03/22	linux-5.15.y (ToT)	0c935c049b5c	C	[report] INFO: rcu detected stall in neigh_periodic_work
2025/03/22	upstream (ToT)	183601b78a9b	C	Didn't crash

Date

Name

Commit

Repro

Result

2025/03/22

linux-5.15.y (ToT)

0c935c049b5c

[report] INFO: rcu detected stall in neigh_periodic_work

2025/03/22

upstream (ToT)

183601b78a9b

Didn't crash

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in sock_write_iter kernel			1	1991d	1991d	0/28	closed as invalid on 2019/12/04 14:04
linux-5.15	INFO: rcu detected stall in sock_write_iter (3)			1	206d	206d	0/3	auto-obsoleted due to no activity on 2025/01/31 00:48
upstream	INFO: rcu detected stall in sock_write_iter (3) net	C	done	152	13d	375d	0/28	upstream: reported C repro on 2024/05/07 12:14
linux-5.15	INFO: rcu detected stall in sock_write_iter			1	575d	575d	0/3	auto-obsoleted due to no activity on 2024/01/28 05:21
linux-5.15	INFO: rcu detected stall in sock_write_iter (2)			1	393d	393d	0/3	auto-obsoleted due to no activity on 2024/07/28 08:46
linux-6.1	INFO: rcu detected stall in sock_write_iter			1	408d	408d	0/3	auto-obsoleted due to no activity on 2024/07/13 13:13
upstream	INFO: rcu detected stall in sock_write_iter (2) netfilter			1	560d	560d	0/28	auto-obsoleted due to no activity on 2024/01/03 00:51
android-5-10	BUG: soft lockup in sock_write_iter			1	66d	66d	0/2	premoderation: reported on 2025/03/12 11:52
android-5-15	BUG: soft lockup in sock_write_iter			24	276d	412d	0/2	auto-obsoleted due to no activity on 2024/11/03 03:04

Created	Duration	User	Patch	Repo	Result
2025/04/29 07:27	9h30m	fix candidate		upstream	OK (1) job log

Created

Duration

User

Patch

Repo

Result

2025/04/29 07:27

9h30m

fix candidate

upstream

OK (1) job log

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 ticks this GP) idle=30d/1/0x4000000000000000 softirq=6647/6647 fqs=5247 (detected by 1, t=10502 jiffies, g=7109, q=1377) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4169 Comm: syz-execprog Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:task_irq_context kernel/locking/lockdep.c:4521 [inline] RIP: 0010:__lock_acquire+0x3d6/0x1ff0 kernel/locking/lockdep.c:4950 Code: 80 00 00 00 48 89 03 65 8b 05 7a 8b 9f 7e 31 db 85 c0 0f 95 c3 01 db 48 8d bd d4 0a 00 00 48 89 f8 48 c1 e8 03 48 89 44 24 68 <0f> b6 04 10 84 c0 4c 8b 74 24 38 48 89 f9 48 89 7c 24 10 0f 85 5c RSP: 0018:ffffc900000079e0 EFLAGS: 00000807 RAX: 1ffff110033778ca RBX: 0000000000000002 RCX: ffff888019bbc670 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff888019bbc654 RBP: ffff888019bbbb80 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 000000000000000f R14: 000000000000000f R15: 0000000000000000 FS: 000000c004a28a98(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f750ad6dfd4 CR3: 0000000079a3b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <IRQ> lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 debug_object_activate+0x63/0x4e0 lib/debugobjects.c:694 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline] debug_activate kernel/time/hrtimer.c:475 [inline] enqueue_hrtimer+0x30/0x390 kernel/time/hrtimer.c:1084 __run_hrtimer kernel/time/hrtimer.c:1705 [inline] __hrtimer_run_queues+0x6b6/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:unwind_next_frame+0xd5/0x1fa0 arch/x86/kernel/unwind_orc.c:436 Code: 50 48 89 5c 24 38 bf 01 00 00 00 e8 25 e4 1e 00 48 ba 00 00 00 00 00 fc ff df 49 8d 5f 50 48 89 d8 48 c1 e8 03 48 89 44 24 30 <80> 3c 10 00 74 12 48 89 df e8 3d d5 91 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc90002e3ef08 EFLAGS: 00000a02 RAX: 1ffff920005c7e02 RBX: ffffc90002e3f010 RCX: ffffffff8a49ab00 RDX: dffffc0000000000 RSI: ffffffff884de13b RDI: ffffffff8138b9ab RBP: ffffc90002e3eff8 R08: 000000000000000c R09: ffffc90002e3f0b0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90002e3fb60 R13: ffffffff816e2db0 R14: ffffffff884de13b R15: ffffc90002e3efc0 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 save_stack+0xf6/0x1e0 mm/page_owner.c:119 __reset_page_owner+0x52/0x180 mm/page_owner.c:140 reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 do_slab_free mm/slub.c:3487 [inline] ___cache_free+0xe3/0x100 mm/slub.c:3506 qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] __kmalloc_node_track_caller+0x14d/0x390 mm/slub.c:4958 kmalloc_reserve net/core/skbuff.c:356 [inline] __alloc_skb+0x12c/0x590 net/core/skbuff.c:427 alloc_skb_fclone include/linux/skbuff.h:1212 [inline] sk_stream_alloc_skb+0x1fc/0xac0 net/ipv4/tcp.c:889 tcp_sendmsg_locked+0xd34/0x3a90 net/ipv4/tcp.c:1314 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1457 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] sock_write_iter+0x39b/0x530 net/socket.c:1079 call_write_iter include/linux/fs.h:2172 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xacd/0xe50 fs/read_write.c:594 ksys_write+0x1a2/0x2c0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x47f4ce Code: 24 28 44 8b 44 24 2c e9 70 ff ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48 RSP: 002b:000000c0001e73b0 EFLAGS: 00000216 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000047f4ce RDX: 00000000000003d0 RSI: 000000c0002bb030 RDI: 0000000000000006 RBP: 000000c0001e73f0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 000000c0001e7520 R13: 000000000000014e R14: 000000c004a52a80 R15: 000000c0002baf00 </TASK>

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/03/16 07:13	linux-5.15.y	0c935c049b5c	e2826670	.config	console log	report	syz / log			[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: rcu detected stall in sock_write_iter

Crashes (1):

Assets (help?)