INFO: rcu detected stall in dev

Kernel	Title	Count	Last	Reported	Patched	Status
linux-4.19	INFO: rcu detected stall in dev_ioctl (2)	1	964d	964d	0/1	auto-closed as invalid on 2021/12/27 14:21
upstream	INFO: rcu detected stall in dev_ioctl batman	18	739d	1607d	0/26	auto-closed as invalid on 2022/08/09 13:29
linux-4.19	INFO: rcu detected stall in dev_ioctl (3)	1	841d	841d	0/1	auto-closed as invalid on 2022/04/29 15:27

batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (1 GPs behind) idle=c8a/1/0x4000000000000002 softirq=129733/129736 fqs=26 rcu: (t=10502 jiffies g=166693 q=1032) rcu: rcu_preempt kthread starved for 10450 jiffies! g166693 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt I29208 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x4cf/0xfe0 kernel/time/timer.c:1825 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 NMI backtrace for cpu 0 CPU: 0 PID: 17337 Comm: syz-executor.4 Not tainted 4.19.142-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+0x1fc/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1340 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0x62d/0xe19 kernel/rcu/tree.c:2682 update_process_times+0x2a/0xb0 kernel/time/timer.c:1650 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1401 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 </IRQ> RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3910 Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d d9 c7 80 07 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b RSP: 0018:ffff88820cf87688 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11a4b69 RBX: ffff888094d781c0 RCX: 0000000000001dc9 RDX: dffffc0000000000 RSI: 00000000d699bbe2 RDI: 0000000000000282 RBP: ffff888081e46748 R08: ffffffff8b3f96c8 R09: 0000000000000002 R10: ffff888094d78a98 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:168 spin_lock_bh include/linux/spinlock.h:334 [inline] batadv_tt_local_purge+0x11b/0x370 net/batman-adv/translation-table.c:1452 batadv_tt_local_resize_to_mtu+0x8e/0x130 net/batman-adv/translation-table.c:4205 batadv_update_min_mtu net/batman-adv/hard-interface.c:637 [inline] batadv_hard_if_event+0xbb3/0x15c0 net/batman-adv/hard-interface.c:1059 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers_mtu net/core/dev.c:1785 [inline] dev_set_mtu_ext+0x384/0x580 net/core/dev.c:7810 dev_set_mtu+0x95/0x120 net/core/dev.c:7831 dev_ifsioc+0x30a/0x8c0 net/core/dev_ioctl.c:244 dev_ioctl+0x1ab/0xc4c net/core/dev_ioctl.c:488 sock_do_ioctl+0x148/0x2d0 net/socket.c:973 sock_ioctl+0x2ef/0x5d0 net/socket.c:1074 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45d5b9 Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fbe8c28dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000001e240 RCX: 000000000045d5b9 RDX: 0000000020000040 RSI: 0000000000008922 RDI: 0000000000000003 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffe47c3e78f R14: 00007fbe8c28e9c0 R15: 000000000118cf4c net_ratelimit: 5850 callbacks suppressed batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) net_ratelimit: 6639 callbacks suppressed batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320) batman_adv: batadv0: Forced to purge local tt entries to fit new maximum fragment MTU (-320)