INFO: rcu detected stall in mrp_join

INFO: rcu detected stall in mrp_join_timer (2)
Status: upstream: reported on 2020/02/16 10:49
Reported-by: syzbot+67edf33871a80247d3c0@syzkaller.appspotmail.com
First crash: 287d, last: 11d

similar bugs (3):
Kernel	Title	Count	Last	Reported	Patched	Status
linux-4.14	INFO: rcu detected stall in mrp_join_timer	7	127d	292d	0/1	auto-closed as invalid on 2020/10/17 01:22
upstream	INFO: rcu detected stall in mrp_join_timer	1	289d	289d	0/17	closed as invalid on 2020/01/09 08:13
linux-4.19	INFO: rcu detected stall in mrp_join_timer	26	54d	289d	0/1	upstream: reported on 2020/01/08 08:04

Sample crash report:

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10673 at kernel/sched/core.c:3013 rq_unlock kernel/sched/sched.h:1326 [inline]
WARNING: CPU: 0 PID: 10673 at kernel/sched/core.c:3013 try_invoke_on_locked_down_task+0x21d/0x2f0 kernel/sched/core.c:3019
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 10673 Comm: syz-executor.4 Not tainted 5.9.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 panic+0x382/0x7fb kernel/panic.c:231
 __warn.cold+0x20/0x4b kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:try_invoke_on_locked_down_task+0x21d/0x2f0 kernel/sched/core.c:3013
Code: 45 31 f6 49 39 c0 74 3a 8b 74 24 38 49 8d 78 18 4c 89 04 24 e8 a4 e7 08 00 4c 8b 04 24 4c 89 c7 e8 b8 09 d7 06 e9 20 ff ff ff <0f> 0b e9 7d fe ff ff 4c 89 ee 48 89 ef 41 ff d4 41 89 c6 e9 08 ff
RSP: 0018:ffffc900000077c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff92000000efa RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8162da90 RDI: ffff8880362ce000
RBP: ffff8880362ce000 R08: 0000000000000033 R09: ffffffff8a05ad83
R10: 0000000000001cad R11: 0000000000000001 R12: ffffffff8162da90
R13: ffffc900000078e8 R14: ffff8880362ce000 R15: 0000000000000000
 rcu_print_task_stall kernel/rcu/tree_stall.h:267 [inline]
 print_other_cpu_stall kernel/rcu/tree_stall.h:475 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:634 [inline]
 rcu_pending kernel/rcu/tree.c:3639 [inline]
 rcu_sched_clock_irq.cold+0x97e/0xdfd kernel/rcu/tree.c:2521
 update_process_times+0x25/0xa0 kernel/time/timer.c:1710
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176
 tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328
 __run_hrtimer kernel/time/hrtimer.c:1524 [inline]
 __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1588
 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1650
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x147/0x5f0 arch/x86/kernel/apic/apic.c:1097
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
 sysvec_apic_timer_interrupt+0x4c/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x4d/0x90 kernel/locking/spinlock.c:191
Code: 48 c7 c0 68 6b fc 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 3c 48 83 3d 92 21 d3 01 00 74 29 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 c4 ab 27 f9 65 8b 05 8d b4 d8 77
RSP: 0018:ffffc90000007ca8 EFLAGS: 00000286
RAX: 1ffffffff13f8d6d RBX: 0000000000000286 RCX: ffffffff815b7f72
RDX: dffffc0000000000 RSI: 0000000000000101 RDI: 0000000000000286
RBP: ffff8880613b3908 R08: 0000000000000001 R09: ffffffff8d0c3aaf
R10: fffffbfff1a18755 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880613b3908 R14: 1ffff92000000fa7 R15: ffff8880ae4255c0
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 skb_dequeue+0x125/0x180 net/core/skbuff.c:3042
 mrp_queue_xmit net/802/mrp.c:350 [inline]
 mrp_join_timer+0x97/0xc0 net/802/mrp.c:595
 call_timer_fn+0x1ac/0x760 kernel/time/timer.c:1413
 expire_timers kernel/time/timer.c:1458 [inline]
 __run_timers.part.0+0x67c/0xaa0 kernel/time/timer.c:1755
 __run_timers kernel/time/timer.c:1736 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1768
 __do_softirq+0x1f8/0xb23 kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x9b/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0x235/0x280 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:__sanitizer_cov_trace_pc+0x52/0x60 kernel/kcov.c:205
Code: 74 2b 8b 82 08 14 00 00 83 f8 02 75 20 48 8b 8a 10 14 00 00 8b 92 0c 14 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 34 c1 <48> 89 01 c3 66 2e 0f 1f 84 00 00 00 00 00 41 55 41 54 49 89 fc 55
RSP: 0018:ffffc9001754f3e8 EFLAGS: 00000212
RAX: 000000000000d069 RBX: 0000000000000004 RCX: ffffc90011230000
RDX: 0000000000040000 RSI: ffffffff838a1b1a RDI: 0000000000000005
RBP: ffff88809e4f1480 R08: 0000000000000001 R09: ffffffff8d5faa07
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000149 R14: dffffc0000000000 R15: 0000000000000000
 tomoyo_domain_quota_is_ok+0x31a/0x550 security/tomoyo/util.c:1070
 tomoyo_supervisor+0x2f2/0xef0 security/tomoyo/common.c:2089
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x419/0x590 security/tomoyo/file.c:734
 tomoyo_path_mknod+0x10d/0x190 security/tomoyo/tomoyo.c:240
 security_path_mknod+0xf9/0x170 security/security.c:1077
 may_o_create fs/namei.c:2927 [inline]
 lookup_open.isra.0+0x431/0x1350 fs/namei.c:3068
 open_last_lookups fs/namei.c:3177 [inline]
 path_openat+0x96d/0x2730 fs/namei.c:3365
 do_filp_open+0x17e/0x3c0 fs/namei.c:3395
 do_sys_openat2+0x16d/0x420 fs/open.c:1168
 do_sys_open fs/open.c:1184 [inline]
 __do_sys_open fs/open.c:1192 [inline]
 __se_sys_open fs/open.c:1188 [inline]
 __x64_sys_open+0x119/0x1c0 fs/open.c:1188
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45de59
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f39e2924c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000022140 RCX: 000000000045de59
RDX: 0000000000000000 RSI: 0000000000164142 RDI: 0000000020000100
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 000000000169fb7f R14: 00007f39e29259c0 R15: 000000000118bf2c
Shutting down cpus with NMI
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (34):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Maintainers
ci-upstream-kasan-gce	2020/10/12 23:38	upstream	bbf5c979	d32b0bbf	.config	log	report	info	fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce	2020/09/12 04:39	upstream	e8878ab8	79fb24e2	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce	2020/09/04 21:21	upstream	59126901	abf9ba4f	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-smack-root	2020/08/29 18:17	upstream	4d41ead6	d5a3ae1f	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce	2020/08/26 00:43	upstream	abb3438d	344da168	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-selinux-root	2020/08/23 08:32	upstream	c3d8f220	1da71ab0	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-root	2020/08/23 06:37	upstream	c3d8f220	1da71ab0	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-root	2020/08/21 01:44	upstream	da2968ff	1d75fe45	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-smack-root	2020/08/20 17:35	upstream	7eac66d0	ed282a3a	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-selinux-root	2020/08/16 12:06	upstream	d84835b1	424dd8e7	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-selinux-root	2020/08/16 09:07	upstream	d84835b1	424dd8e7	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce	2020/08/16 01:51	upstream	c9c9735c	424dd8e7	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce	2020/08/13 03:13	upstream	fb893de3	bc15f7db	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-root	2020/08/07 06:28	upstream	47ec5303	1f122f88	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-selinux-root	2020/08/03 07:21	upstream	5a30a789	196277c4	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-selinux-root	2020/07/21 14:45	upstream	4fa640dc	d88894e6	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce	2020/07/13 03:01	upstream	4437dd6e	9ebcc5b1	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-root	2020/07/03 16:20	upstream	cd77006e	bed10395	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce	2020/05/24 20:44	upstream	caffb99b	bd28eb9d	.config	log	report		bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mbenes@suse.cz, mingo@redhat.com, peterz@infradead.org, shile.zhang@linux.alibaba.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-root	2020/03/13 12:10	upstream	3cc6e2c5	d850e9d0	.config	log	report		davem@davemloft.net, gregkh@linuxfoundation.org, info@metux.net, keescook@chromium.org, kstewart@linuxfoundation.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce-root	2020/02/23 19:23	upstream	0a115e5f	2c36e7a7	.config	log	report		davem@davemloft.net, gregkh@linuxfoundation.org, info@metux.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce	2020/02/12 02:06	upstream	0a679e13	4d1ab643	.config	log	report		davem@davemloft.net, gregkh@linuxfoundation.org, info@metux.net, keescook@chromium.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce-root	2020/02/08 05:37	upstream	41dcd67e	06150bf1	.config	log	report		davem@davemloft.net, info@metux.net, keescook@chromium.org, kstewart@linuxfoundation.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce	2020/02/02 01:47	upstream	94f2630b	2274ad39	.config	log	report		allison@lohutok.net, davem@davemloft.net, keescook@chromium.org, kstewart@linuxfoundation.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce-smack-root	2020/01/31 21:13	upstream	ccaaaf6f	c30117b2	.config	log	report		allison@lohutok.net, davem@davemloft.net, gregkh@linuxfoundation.org, info@metux.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce-selinux-root	2020/01/30 01:33	upstream	b3a60822	5ed23f9a	.config	log	report		allison@lohutok.net, davem@davemloft.net, kstewart@linuxfoundation.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce-root	2020/01/24 05:13	upstream	4703d911	2e95ab33	.config	log	report		allison@lohutok.net, davem@davemloft.net, info@metux.net, kstewart@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce-smack-root	2020/01/19 19:03	upstream	8f8972a3	0342f8c7	.config	log	report		allison@lohutok.net, davem@davemloft.net, keescook@chromium.org, kstewart@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce	2020/01/14 09:13	upstream	b3a987b0	32881205	.config	log	report		davem@davemloft.net, info@metux.net, keescook@chromium.org, kstewart@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce	2020/01/10 06:53	upstream	e69ec487	4de4e9f0	.config	log	report		davem@davemloft.net, gregkh@linuxfoundation.org, keescook@chromium.org, kstewart@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pankaj.laxminarayan.bharadiya@intel.com, tglx@linutronix.de
ci-upstream-kasan-gce-386	2020/07/30 18:19	upstream	d3590ebf	233283a1	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-linux-next-kasan-gce-root	2020/08/23 20:50	linux-next	494d311a	cef5ae68	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-linux-next-kasan-gce-root	2020/07/22 12:40	linux-next	de2e69cf	128cd85f	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de
ci-upstream-linux-next-kasan-gce-root	2020/07/13 07:44	linux-next	d31958b3	9ebcc5b1	.config	log	report		fweisbec@gmail.com, linux-kernel@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de