syzbot

rcu: INFO: rcu_preempt detected sResetting rate control (733898 samples)
rcu: 	3-....: (1 GPs behind) idle=08e/1/0x4000000000000002 softirq=7735/7736 fqs=2847 
	(detected by 1, t=10622 jiffies, g=9377, q=538)
Sending NMI from CPU 1 to CPUs 3:
NMI backtrace for cpu 3
CPU: 3 PID: 16837 Comm: syz-executor.1 Not tainted 5.7.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:unwind_next_frame+0x935/0x1df0 arch/x86/kernel/unwind_orc.c:469
Code: fc ff df 48 8b 14 24 48 c1 ea 03 80 3c 02 00 0f 85 0f 13 00 00 4c 89 c0 49 8b 57 38 48 b9 00 00 00 00 00 fc ff df 48 c1 e8 03 <0f> b6 34 08 49 8d 40 01 48 89 c7 48 c1 ef 03 0f b6 0c 0f 4c 89 c7
RSP: 0018:ffffc900005985e8 EFLAGS: 00000a06
RAX: 1ffffffff15fd7a5 RBX: 1ffff920000b30c5 RCX: dffffc0000000000
RDX: ffffc90000598ac0 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000002 R08: ffffffff8afebd2a R09: ffffffff8afebd2e
R10: 0000000000028f09 R11: 000000000007001e R12: ffffc90000598708
R13: ffffc900005986f5 R14: ffffc90000598710 R15: ffffc900005986c0
FS:  0000000000000000(0000) GS:ffff88802d100000(0063) knlGS:00000000f5cfab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007fe701035518 CR3: 000000004e4e1000 CR4: 0000000000340ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc mm/kasan/common.c:494 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc_node mm/slab.c:3263 [inline]
 kmem_cache_alloc_node_trace+0x14b/0x790 mm/slab.c:3593
 __do_kmalloc_node mm/slab.c:3615 [inline]
 __kmalloc_node_track_caller+0x38/0x60 mm/slab.c:3630
 __kmalloc_reserve.isra.0+0x39/0xe0 net/core/skbuff.c:142
 __alloc_skb+0xef/0x5a0 net/core/skbuff.c:210
 alloc_skb include/linux/skbuff.h:1083 [inline]
 ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:418
 ndisc_send_rs+0x37b/0x6f0 net/ipv6/ndisc.c:684
 addrconf_rs_timer+0x30f/0x6e0 net/ipv6/addrconf.c:3848
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1786
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x192/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1107
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:759 [inline]
RIP: 0010:generic_exec_single kernel/smp.c:172 [inline]
RIP: 0010:generic_exec_single+0x2ae/0x410 kernel/smp.c:158
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 5b 01 00 00 48 83 3d b2 92 2b 08 00 0f 84 df 00 00 00 e8 87 d9 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 45 31 e4 e9 f3 fd ff ff e8 70 d9 0a 00 0f 0b e9 99
RSP: 0018:ffffc9000340faf0 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 0000000000000212 RCX: ffffc90020403000
RDX: 0000000000031b41 RSI: ffffffff81692199 RDI: 0000000000000212
RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8c349aa7 R11: fffffbfff1869354 R12: ffffc9000340fb60
R13: ffffffff818cb310 R14: ffffc9000340fc20 R15: ffff88805c38c080
 smp_call_function_single+0x186/0x4f0 kernel/smp.c:379
 task_function_call+0xe2/0x160 kernel/events/core.c:116
 perf_install_in_context+0x2ee/0x570 kernel/events/core.c:2880
 __do_sys_perf_event_open+0x1b8d/0x2900 kernel/events/core.c:11873
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x270/0xe90 arch/x86/entry/common.c:396
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139