rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=faa/1/0x4000000000000004 softirq=485700/485701 fqs=5209 
rcu: 	 (t=10501 jiffies g=661413 q=8596)
NMI backtrace for cpu 1
CPU: 1 PID: 25149 Comm: syz-executor.5 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
RIP: 0010:set_track mm/kasan/kasan.c:461 [inline]
RIP: 0010:kasan_kmalloc+0x13c/0x160 mm/kasan/kasan.c:553
Code: 2e 8d 41 01 85 c0 89 44 24 08 74 0e 8d 50 ff 48 83 3c d6 ff 75 04 89 54 24 08 48 8d 7c 24 08 44 89 e6 e8 f7 2d d2 01 89 45 04 <e9> 4a ff ff ff 48 81 fa 00 00 60 87 72 09 48 81 fa a0 09 60 87 72
RSP: 0018:ffff8880ae707938 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 000000009080038d RBX: ffff8880242a6868 RCX: 0000000000000000
RDX: ffffffff8760026c RSI: 0000000000000009 RDI: 0000000000000000
RBP: ffff8880242a6868 R08: 0000000000480020 R09: 0000000000000003
R10: 0000000026802b75 R11: 0000000009d5f81e R12: 0000000000480020
R13: 0000000000000000 R14: ffff88821b685e40 R15: 00000000000000e8
 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
 </IRQ>
RIP: 0010:check_memory_region+0x25/0x170 mm/kasan/kasan.c:266
Code: 00 00 00 00 00 48 85 f6 0f 84 3f 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 44 0f b6 c2 48 39 c7 0f 86 20 01 00 00 4c 8d 54 37 ff <41> 54 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 55 48 89 fd 49 c1 e9
RSP: 0018:ffff888042c0fd30 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13
RAX: ffff7fffffffffff RBX: ffff88809d932a00 RCX: ffffffff81525940
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff88e4ddc0
RBP: ffffffff88e4ddc0 R08: 0000000000000000 R09: 0000000000000002
R10: ffffffff88e4ddc3 R11: 00000000013f2f9f R12: ffff88808a43a8e8
R13: ffff88802c7bb700 R14: 0000000000000000 R15: ffff88809d932a30
 atomic_read include/asm-generic/atomic-instrumented.h:21 [inline]
 queued_spin_is_locked include/asm-generic/qspinlock.h:35 [inline]
 debug_spin_unlock kernel/locking/spinlock_debug.c:98 [inline]
 do_raw_spin_unlock+0x50/0x230 kernel/locking/spinlock_debug.c:134
 __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock+0x1f/0x40 kernel/locking/spinlock.c:176
 spin_unlock include/linux/spinlock.h:369 [inline]
 fasync_insert_entry+0x21d/0x2a0 fs/fcntl.c:940
 fasync_add_entry fs/fcntl.c:964 [inline]
 fasync_helper+0x5f/0xab fs/fcntl.c:982
 perf_fasync+0x7e/0xb0 kernel/events/core.c:5802
 setfl fs/fcntl.c:73 [inline]
 do_fcntl+0x65e/0x1050 fs/fcntl.c:347
 __do_sys_fcntl fs/fcntl.c:463 [inline]
 __se_sys_fcntl+0xfc/0x150 fs/fcntl.c:448
 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:00007f172a868c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 0000000000003480 RCX: 000000000045d5b9
RDX: 0000000000042000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffeb2d4da5f R14: 00007f172a8699c0 R15: 000000000118cf4c
rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
rcu: 	1-....: (10549 ticks this GP) idle=faa/1/0x4000000000000004 softirq=485687/485701 fqs=5180 
rcu: 	(detected by 0, t=10502 jiffies, g=44057, q=10)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25149 Comm: syz-executor.5 Not tainted 4.19.142-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:784 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:806 [inline]
RIP: 0010:lock_release+0xd2/0x8b0 kernel/locking/lockdep.c:3922
Code: d2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 c3 06 00 00 48 83 3d 96 d1 80 07 00 0f 84 1b 05 00 00 9c 58 <0f> 1f 44 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 04 24 48 c7 c0
RSP: 0018:ffff8880ae7077a0 EFLAGS: 00000082
RAX: 0000000000000082 RBX: ffff888027b3e700 RCX: 0000000000007f07
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff888027b3ef84
RBP: ffffffff88da5848 R08: ffffffff8b42a0b8 R09: 0000000000000005
R10: 0000000000000000 R11: ffffffff8ad3805b R12: 1ffff11015ce0ef7
R13: ffffffff815b5cbb R14: 0000000000000000 R15: 0000000000000000
FS:  00007f172a869700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f726000 CR3: 0000000033569000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 seqcount_lockdep_reader_access include/linux/seqlock.h:82 [inline]
 read_seqcount_begin include/linux/seqlock.h:164 [inline]
 ktime_get_update_offsets_now+0xe3/0x460 kernel/time/timekeeping.c:2226
 hrtimer_update_base kernel/time/hrtimer.c:587 [inline]
 hrtimer_interrupt+0x13b/0x930 kernel/time/hrtimer.c:1503
 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:kfree+0x123/0x210 mm/slab.c:3823
Code: 89 ea 48 89 ee 4c 89 e7 e8 da ee ff ff f6 c7 02 74 ca e8 d0 3f cf ff 48 83 3d 20 b7 32 07 00 0f 84 eb 00 00 00 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d 41 5c 41 5d c3 65 8b 05 ea dc 61 7e 83 f8 3f
RSP: 0018:ffff8880ae707a60 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000282 RCX: 1ffff11004f67dff
RDX: 0000000000000000 RSI: ffff888027b3f000 RDI: 0000000000000282
RBP: ffff8880169d45c0 R08: 0000000000400000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88812c39cc40
R13: ffffffff85b33ece R14: 0000000000000000 R15: ffff8880169d4cb0
 skb_free_head net/core/skbuff.c:554 [inline]
 skb_release_data+0x6de/0x920 net/core/skbuff.c:574
 skb_release_all net/core/skbuff.c:631 [inline]
 __kfree_skb net/core/skbuff.c:645 [inline]
 kfree_skb+0x11a/0x3d0 net/core/skbuff.c:663
 kfree_skb_list+0x3f/0x60 net/core/skbuff.c:672
 __dev_xmit_skb net/core/dev.c:3506 [inline]
 __dev_queue_xmit+0x2973/0x2e00 net/core/dev.c:3807
 mrp_queue_xmit net/802/mrp.c:354 [inline]
 mrp_join_timer+0x8a/0xc0 net/802/mrp.c:598
 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
 </IRQ>
RIP: 0010:check_memory_region+0x25/0x170 mm/kasan/kasan.c:266
Code: 00 00 00 00 00 48 85 f6 0f 84 3f 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 44 0f b6 c2 48 39 c7 0f 86 20 01 00 00 4c 8d 54 37 ff <41> 54 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 55 48 89 fd 49 c1 e9
RSP: 0018:ffff888042c0fd30 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13
RAX: ffff7fffffffffff RBX: ffff88809d932a00 RCX: ffffffff81525940
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff88e4ddc0
RBP: ffffffff88e4ddc0 R08: 0000000000000000 R09: 0000000000000002
R10: ffffffff88e4ddc3 R11: 00000000013f2f9f R12: ffff88808a43a8e8
R13: ffff88802c7bb700 R14: 0000000000000000 R15: ffff88809d932a30
 atomic_read include/asm-generic/atomic-instrumented.h:21 [inline]
 queued_spin_is_locked include/asm-generic/qspinlock.h:35 [inline]
 debug_spin_unlock kernel/locking/spinlock_debug.c:98 [inline]
 do_raw_spin_unlock+0x50/0x230 kernel/locking/spinlock_debug.c:134
 __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock+0x1f/0x40 kernel/locking/spinlock.c:176
 spin_unlock include/linux/spinlock.h:369 [inline]
 fasync_insert_entry+0x21d/0x2a0 fs/fcntl.c:940
 fasync_add_entry fs/fcntl.c:964 [inline]
 fasync_helper+0x5f/0xab fs/fcntl.c:982
 perf_fasync+0x7e/0xb0 kernel/events/core.c:5802
 setfl fs/fcntl.c:73 [inline]
 do_fcntl+0x65e/0x1050 fs/fcntl.c:347
 __do_sys_fcntl fs/fcntl.c:463 [inline]
 __se_sys_fcntl+0xfc/0x150 fs/fcntl.c:448
 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:00007f172a868c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 0000000000003480 RCX: 000000000045d5b9
RDX: 0000000000042000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffeb2d4da5f R14: 00007f172a8699c0 R15: 000000000118cf4c