INFO: rcu detected stall in wg_ratelimiter_gc

Title	Replies (including bot)	Last reply
[syzbot] [wireguard?] INFO: rcu detected stall in wg_ratelimiter_gc_entries (2)	0 (2)	2023/09/29 19:45
[syzbot] Monthly wireguard report (Aug 2023)	0 (1)	2023/08/21 20:40

Title

Replies (including bot)

Last reply

[syzbot] [wireguard?] INFO: rcu detected stall in wg_ratelimiter_gc_entries (2)

0 (2)

2023/09/29 19:45

[syzbot] Monthly wireguard report (Aug 2023)

0 (1)

2023/08/21 20:40

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	INFO: rcu detected stall in wg_ratelimiter_gc_entries				1	384d	384d	0/3	auto-obsoleted due to no activity on 2023/08/18 11:48
upstream	INFO: rcu detected stall in wg_ratelimiter_gc_entries wireguard				1	361d	361d	0/26	auto-obsoleted due to no activity on 2023/08/11 08:26

linux-6.1

INFO: rcu detected stall in wg_ratelimiter_gc_entries

384d

0/3

auto-obsoleted due to no activity on 2023/08/18 11:48

upstream

INFO: rcu detected stall in wg_ratelimiter_gc_entries wireguard

361d

0/26

auto-obsoleted due to no activity on 2023/08/11 08:26


Created	Duration	User	Patch	Repo	Result
2023/08/30 01:53	24m	retest repro		net	OK log
2023/08/30 01:53	25m	retest repro		net	OK log
2023/08/18 11:26	44m	hdanton@sina.com	patch	https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git ace0ab3a4b54	OK log
2023/08/17 10:28	47m	hdanton@sina.com	patch	https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git ace0ab3a4b54	report log

rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=a14c/1/0x4000000000000000 softirq=9048/9050 fqs=4461 rcu: hardirqs softirqs csw/system rcu: number: 1 0 0 rcu: cputime: 26363 26111 22 ==> 52480(ms) rcu: (t=10500 jiffies g=6745 q=571 ncpus=2) CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.5.0-rc5-syzkaller-00202-g8a519a572598 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: events_power_efficient wg_ratelimiter_gc_entries RIP: 0010:taprio_dequeue_tc_priority+0x266/0x4b0 net/sched/sch_taprio.c:798 Code: 10 89 ef 44 89 f6 e8 39 b6 2c f9 44 39 f5 0f 84 40 ff ff ff e8 3b bb 2c f9 49 83 ff 0f 0f 87 e1 01 00 00 48 8b 04 24 0f b6 00 <38> 44 24 36 7c 08 84 c0 0f 85 bf 01 00 00 8b 33 8b 4c 24 30 48 8b RSP: 0018:ffffc900001e0d60 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff88806f214394 RCX: 0000000000000100 RDX: ffff888018a61dc0 RSI: ffffffff88594d65 RDI: 0000000000000004 RBP: 000000000000000a R08: 0000000000000004 R09: 000000000000000a R10: 0000000000000000 R11: 000000000000004e R12: 0000000000000010 R13: ffff88802cbfab60 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff88e4d3d8 CR3: 0000000018ed8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> taprio_dequeue+0x12e/0x5f0 net/sched/sch_taprio.c:868 dequeue_skb net/sched/sch_generic.c:292 [inline] qdisc_restart net/sched/sch_generic.c:397 [inline] __qdisc_run+0x1c4/0x19d0 net/sched/sch_generic.c:415 qdisc_run include/net/pkt_sched.h:125 [inline] qdisc_run include/net/pkt_sched.h:122 [inline] net_tx_action+0x71e/0xc80 net/core/dev.c:5049 __do_softirq+0x218/0x965 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5729 Code: c1 05 d5 6e 9b 7e 83 f8 01 0f 85 b0 02 00 00 9c 58 f6 c4 02 0f 85 9b 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc90000a1fb98 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff92000143f75 RCX: 0000000000000001 RDX: 1ffff1100314c510 RSI: ffffffff8a6c83a0 RDI: ffffffff8ac811a0 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2309dea R10: ffffffff9184ef57 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: ffffffff8d89afb8 R15: 0000000000000000 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] wg_ratelimiter_gc_entries+0xc6/0x520 drivers/net/wireguard/ratelimiter.c:63 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600 worker_thread+0x687/0x1110 kernel/workqueue.c:2751 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 </TASK>

Crashes (3):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/08/15 21:08	net	8a519a572598	39990d51	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-net-this-kasan-gce	INFO: rcu detected stall in wg_ratelimiter_gc_entries
2023/08/14 18:27	net	ace0ab3a4b54	39990d51	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-net-this-kasan-gce	INFO: rcu detected stall in wg_ratelimiter_gc_entries
2023/08/15 06:21	upstream	2ccdd1b13c59	39990d51	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-386	INFO: rcu detected stall in wg_ratelimiter_gc_entries

Crashes (3):

Assets (help?)