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INFO: rcu detected stall in batadv_purge_orig

Status: auto-obsoleted due to no activity on 2022/11/10 10:36
Subsystems: batman
[Documentation on labels]
First crash: 1062d, last: 1062d
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: rcu detected stall in batadv_purge_orig 1 2 491d 580d 0/3 auto-obsoleted due to no activity on 2024/06/13 05:20
upstream INFO: rcu detected stall in batadv_purge_orig (2) batman 1 4 606d 818d 0/29 auto-obsoleted due to no activity on 2024/02/09 00:50
linux-6.1 INFO: rcu detected stall in batadv_purge_orig 1 1 466d 466d 0/3 auto-obsoleted due to no activity on 2024/07/07 19:31
upstream BUG: soft lockup in batadv_purge_orig batman 1 1 466d 466d 25/29 fixed on 2024/06/05 19:57

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=bddc/1/0x4000000000000000 softirq=153778/153783 fqs=3
	(detected by 0, t=10502 jiffies, g=214453, q=101 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 88 Comm: kworker/u4:4 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: bat_events batadv_purge_orig
RIP: 0010:__lock_acquire+0x1ae/0x1f60 kernel/locking/lockdep.c:4963
Code: 0f 84 24 01 00 00 83 fd 31 0f 83 5e 1b 00 00 48 8d 44 ad 00 48 8b 0c 24 48 8d ac c1 70 0a 00 00 48 89 eb 48 c1 eb 03 8a 04 13 <84> c0 0f 85 7f 16 00 00 44 8b 65 00 44 89 e0 25 ff 1f 00 00 44 39
RSP: 0018:ffffc900001e09c8 EFLAGS: 00000802
RAX: 0000000000000000 RBX: 1ffff110031bcc6d RCX: ffff888018de5880
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff91aacd98
RBP: ffff888018de6368 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1c4ace6 R11: 1ffffffff1c4ace5 R12: 0000000000000001
R13: ffffffff91aacd98 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556831708 CR3: 0000000033197000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5666
 __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+0x97/0x6a0 lib/debugobjects.c:658
 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
 debug_activate kernel/time/hrtimer.c:475 [inline]
 enqueue_hrtimer kernel/time/hrtimer.c:1084 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1702 [inline]
 __hrtimer_run_queues+0x595/0xa60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x16b/0x1f0 kernel/softirq.c:403
Code: 8a e8 e9 59 e5 08 65 66 8b 05 01 a1 b0 7e 66 85 c0 75 57 bf 01 00 00 00 e8 92 7e 0a 00 e8 9d 62 3d 00 fb 65 8b 05 2d 7e af 7e <85> c0 75 05 e8 4c 9b ad ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc90001cdfa00 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff9200039bf44 RCX: ffffffff8169af8a
RDX: dffffc0000000000 RSI: ffffffff8aad75c0 RDI: ffffffff8b0a5460
RBP: ffffc90001cdfab0 R08: dffffc0000000000 R09: fffffbfff1ff3826
R10: fffffbfff1ff3826 R11: 1ffffffff1ff3825 R12: dffffc0000000000
R13: 1ffff9200039bf48 R14: ffffc90001cdfa40 R15: 0000000000000201
 spin_unlock_bh include/linux/spinlock.h:394 [inline]
 batadv_purge_orig_ref+0x15f2/0x16e0 net/batman-adv/originator.c:1259
 batadv_purge_orig+0x15/0x60 net/batman-adv/originator.c:1272
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>
rcu: rcu_preempt kthread starved for 10496 jiffies! g214453 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:26424 pid:   16 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0x957/0xe20 kernel/sched/core.c:6494
 schedule+0xcb/0x190 kernel/sched/core.c:6570
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935
 rcu_gp_fqs_loop+0x309/0x1070 kernel/rcu/tree.c:1657
 rcu_gp_kthread+0xa5/0x390 kernel/rcu/tree.c:1854
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 6699 Comm: kworker/0:12 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: events bpf_map_free_deferred
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x47c/0x4b0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x169/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_check_gp_kthread_starvation+0x1da/0x250 kernel/rcu/tree_stall.h:514
 print_other_cpu_stall+0x1554/0x1690 kernel/rcu/tree_stall.h:619
 check_cpu_stall kernel/rcu/tree_stall.h:762 [inline]
 rcu_pending kernel/rcu/tree.c:3660 [inline]
 rcu_sched_clock_irq+0xa17/0x1950 kernel/rcu/tree.c:2342
 update_process_times+0x148/0x1b0 kernel/time/timer.c:1839
 tick_sched_handle kernel/time/tick-sched.c:243 [inline]
 tick_sched_timer+0x377/0x540 kernel/time/tick-sched.c:1480
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20
RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline]
RIP: 0010:smp_call_function_single+0x402/0x760 kernel/smp.c:777
Code: 04 2b 84 c0 0f 85 4c 01 00 00 45 8b 26 44 89 e6 83 e6 01 31 ff e8 be 19 0b 00 41 83 e4 01 75 08 e8 93 15 0b 00 eb 3f 90 f3 90 <42> 0f b6 04 2b 84 c0 75 10 41 f7 06 01 00 00 00 74 25 e8 77 15 0b
RSP: 0018:ffffc90014f079c0 EFLAGS: 00000293
RAX: ffffffff817e7d59 RBX: 1ffff920029e0f41 RCX: ffff888023270000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90014f07b08 R08: ffffffff817e7d32 R09: fffffbfff1ff381c
R10: fffffbfff1ff381c R11: 1ffffffff1ff381b R12: 0000000000000001
R13: dffffc0000000000 R14: ffffc90014f07a08 R15: 0000000000000000
 rcu_barrier+0x39a/0x670 kernel/rcu/tree.c:3840
 htab_map_free+0x25/0xb90 kernel/bpf/hashtab.c:1481
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>
vkms_vblank_simulate: vblank timer overrun

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/08/12 10:31 upstream 7ebfc85e2cd7 402cd70d .config console log report info ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in batadv_purge_orig
* Struck through repros no longer work on HEAD.