NOHZ: local_softirq_pending 08 rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (1 GPs behind) idle=a72/1/0x4000000000000004 softirq=354613/354614 fqs=4895 rcu: (t=10500 jiffies g=523821 q=7158) NMI backtrace for cpu 0 CPU: 0 PID: 18822 Comm: syz-executor.5 Not tainted 4.19.139-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __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 RIP: 0010:in_exception_stack arch/x86/kernel/dumpstack_64.c:65 [inline] RIP: 0010:get_stack_info+0x10d/0x145 arch/x86/kernel/dumpstack_64.c:121 Code: 00 00 48 89 53 08 48 89 43 10 48 8b 40 f8 48 89 43 18 eb 9b 65 4c 8b 24 25 40 ee 01 00 e9 1f ff ff ff 48 8b 14 cd 00 0c 85 87 44 ff ff ff 48 89 de 48 89 ef e8 53 0b 00 00 84 c0 0f 85 6d ff RSP: 0018:ffff8880ae6077b8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: fffffe0000009000 RBX: ffff8880ae6078a8 RCX: 0000000000000001 RDX: 0000000000002000 RSI: 0000000000000000 RDI: fffffe0000007000 RBP: ffff8880ae6077e0 R08: 000000000001ede0 R09: ffff8880ae6078d0 R10: ffff8880ae607907 R11: 00000000db770b7f R12: ffff88818223a680 R13: ffff8880ae6078c8 R14: dffffc0000000000 R15: ffff8880ae6078a8 __unwind_start+0x540/0x950 arch/x86/kernel/unwind_orc.c:643 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x72/0x190 arch/x86/kernel/stacktrace.c:43 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] mrp_pdu_init net/802/mrp.c:303 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:402 mrp_attr_event+0x15d/0x220 net/802/mrp.c:497 mrp_mad_event net/802/mrp.c:577 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:594 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1703 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1716 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:149 [inline] RIP: 0010:unwind_next_frame+0x231/0x1c60 arch/x86/kernel/unwind_orc.c:429 Code: ff 39 d6 0f 83 df 10 00 00 48 ba 00 00 00 00 00 fc ff df 41 89 f0 4a 8d 3c 85 ec d2 85 8a 49 89 f9 49 c1 e9 03 45 0f b6 0c 11 <48> 89 fa 83 e2 07 83 c2 03 44 38 ca 7c 32 45 84 c9 74 2d 4c 89 44 RSP: 0018:ffff8881826d68d0 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff110304dad22 RCX: ffffffff85e3d5ff RDX: dffffc0000000000 RSI: 000000000004e3d5 RDI: ffffffff8a996240 RBP: 0000000000000001 R08: 000000000004e3d5 R09: 0000000000000000 R10: 0000000000066061 R11: 0000000000000001 R12: ffff8881826d6a00 R13: ffff8881826d69ed R14: ffff8881826d69f0 R15: ffff8881826d69b8 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc_node mm/slab.c:3340 [inline] kmem_cache_alloc_node_trace+0x13c/0x3b0 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] pskb_expand_head+0x159/0xf20 net/core/skbuff.c:1464 netlink_trim+0x200/0x250 net/netlink/af_netlink.c:1300 netlink_broadcast_filtered+0x61/0xbc0 net/netlink/af_netlink.c:1497 netlink_broadcast net/netlink/af_netlink.c:1542 [inline] nlmsg_multicast include/net/netlink.h:591 [inline] nlmsg_notify+0x157/0x1a0 net/netlink/af_netlink.c:2498 rtnl_notify net/core/rtnetlink.c:736 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:3377 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3392 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3380 [inline] rtnetlink_event+0x193/0x1d0 net/core/rtnetlink.c:4829 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 __netdev_upper_dev_link+0x44a/0x980 net/core/dev.c:7172 register_vlan_dev+0x31b/0x7d0 net/8021q/vlan.c:176 vlan_newlink+0x477/0x6d0 net/8021q/vlan_netlink.c:189 rtnl_newlink+0x1027/0x15b0 net/core/rtnetlink.c:3141 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45d189 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:00007f3febc05c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002c0c0 RCX: 000000000045d189 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000007 RBP: 000000000118d200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118d1cc R13: 00007fff4462f53f R14: 00007f3febc069c0 R15: 000000000118d1cc