INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 8810 Comm: syz-executor.2 Not tainted 5.10.0-rc5-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+0x77/0x97 lib/dump_stack.c:118
 assign_lock_key kernel/locking/lockdep.c:935 [inline]
 register_lock_class+0x66d/0x680 kernel/locking/lockdep.c:1247
 __lock_acquire+0x83/0x22a0 kernel/locking/lockdep.c:4711
 lock_acquire+0xd0/0x420 kernel/locking/lockdep.c:5437
 __raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline]
 _raw_read_lock_bh+0x3b/0x70 kernel/locking/spinlock.c:247
 ipv6_get_lladdr+0x8c/0x210 net/ipv6/addrconf.c:1859
 addrconf_rs_timer+0xb9/0x220 net/ipv6/addrconf.c:3872
 call_timer_fn+0xa5/0x340 kernel/time/timer.c:1410
 expire_timers kernel/time/timer.c:1455 [inline]
 __run_timers kernel/time/timer.c:1747 [inline]
 run_timer_softirq+0x259/0x680 kernel/time/timer.c:1760
 __do_softirq+0xf0/0x5f1 kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0xc9/0xf0 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x57/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:199
Code: 0f 1f 44 00 00 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 3e 9b 88 fd 48 89 df e8 f6 e9 88 fd e8 61 2c 94 fd fb bf 01 00 00 00 <e8> 36 34 84 fd 65 8b 05 ff 33 63 7c 85 c0 74 02 5b c3 e8 8b ed 61
RSP: 0018:ffffc90000e53d68 EFLAGS: 00000202
RAX: 00000000017b23b9 RBX: ffff88813bc2c740 RCX: ffffc90000e53d2c
RDX: 0000000000000000 RSI: ffffffff84b10071 RDI: 0000000000000001
RBP: ffffc90000e53dc0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88813bc2c740
R13: 0000000000000000 R14: ffff8881015c4bc0 R15: 0000000000000001
 finish_lock_switch kernel/sched/core.c:3518 [inline]
 finish_task_switch+0xc4/0x3b0 kernel/sched/core.c:3618
 context_switch kernel/sched/core.c:3782 [inline]
 __schedule+0x3b7/0x9d0 kernel/sched/core.c:4528
 schedule+0x38/0xe0 kernel/sched/core.c:4606
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0xa7/0x1b0 kernel/time/hrtimer.c:1878
 hrtimer_nanosleep+0x8c/0x130 kernel/time/hrtimer.c:1931
 __do_sys_nanosleep kernel/time/hrtimer.c:1965 [inline]
 __se_sys_nanosleep kernel/time/hrtimer.c:1952 [inline]
 __x64_sys_nanosleep+0x91/0xd0 kernel/time/hrtimer.c:1952
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c6e1
Code: 75 14 b8 23 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 cf fb ff c3 48 83 ec 08 e8 0a 47 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 47 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffd69a13780 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 0000000000000bb8 RCX: 000000000045c6e1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffd69a13790
RBP: 0000000000049547 R08: 0000000000000000 R09: 0000000001aee940
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000004432
R13: 0000000000000000 R14: 0000000000000032 R15: 0000000000049547
BUG: unable to handle page fault for address: ffffffffffffff1a
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 4e8b067 P4D 4e8b067 PUD 4e8d067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 8810 Comm: syz-executor.2 Not tainted 5.10.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__ipv6_get_lladdr net/ipv6/addrconf.c:1838 [inline]
RIP: 0010:ipv6_get_lladdr+0xb5/0x210 net/ipv6/addrconf.c:1860
Code: 00 49 8b 45 10 49 8d 4d 08 48 8d 90 a8 fe ff ff 48 39 c1 75 15 eb 3f 48 8b 82 60 01 00 00 48 8d 90 a8 fe ff ff 48 39 c1 74 2c <0f> b7 80 1a ff ff ff 66 83 f8 20 77 1f 66 83 f8 20 75 da 85 5a 6c
RSP: 0018:ffffc90000003df8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffff88811e002c08
RDX: fffffffffffffea8 RSI: 0000000000000000 RDI: ffff88811e002d88
RBP: ffffc90000003e20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 3030303030302052 R12: ffffc90000003e30
R13: ffff88811e002c00 R14: ffff88811e002d88 R15: ffffffff83298110
FS:  0000000001aee940(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff1a CR3: 000000010aab2000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 addrconf_rs_timer+0xb9/0x220 net/ipv6/addrconf.c:3872
 call_timer_fn+0xa5/0x340 kernel/time/timer.c:1410
 expire_timers kernel/time/timer.c:1455 [inline]
 __run_timers kernel/time/timer.c:1747 [inline]
 run_timer_softirq+0x259/0x680 kernel/time/timer.c:1760
 __do_softirq+0xf0/0x5f1 kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0xc9/0xf0 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x57/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:199
Code: 0f 1f 44 00 00 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 3e 9b 88 fd 48 89 df e8 f6 e9 88 fd e8 61 2c 94 fd fb bf 01 00 00 00 <e8> 36 34 84 fd 65 8b 05 ff 33 63 7c 85 c0 74 02 5b c3 e8 8b ed 61
RSP: 0018:ffffc90000e53d68 EFLAGS: 00000202
RAX: 00000000017b23b9 RBX: ffff88813bc2c740 RCX: ffffc90000e53d2c
RDX: 0000000000000000 RSI: ffffffff84b10071 RDI: 0000000000000001
RBP: ffffc90000e53dc0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88813bc2c740
R13: 0000000000000000 R14: ffff8881015c4bc0 R15: 0000000000000001
 finish_lock_switch kernel/sched/core.c:3518 [inline]
 finish_task_switch+0xc4/0x3b0 kernel/sched/core.c:3618
 context_switch kernel/sched/core.c:3782 [inline]
 __schedule+0x3b7/0x9d0 kernel/sched/core.c:4528
 schedule+0x38/0xe0 kernel/sched/core.c:4606
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0xa7/0x1b0 kernel/time/hrtimer.c:1878
 hrtimer_nanosleep+0x8c/0x130 kernel/time/hrtimer.c:1931
 __do_sys_nanosleep kernel/time/hrtimer.c:1965 [inline]
 __se_sys_nanosleep kernel/time/hrtimer.c:1952 [inline]
 __x64_sys_nanosleep+0x91/0xd0 kernel/time/hrtimer.c:1952
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c6e1
Code: 75 14 b8 23 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 cf fb ff c3 48 83 ec 08 e8 0a 47 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 47 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffd69a13780 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 0000000000000bb8 RCX: 000000000045c6e1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffd69a13790
RBP: 0000000000049547 R08: 0000000000000000 R09: 0000000001aee940
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000004432
R13: 0000000000000000 R14: 0000000000000032 R15: 0000000000049547
Modules linked in:
CR2: ffffffffffffff1a
---[ end trace 030e61959c57c8e8 ]---
RIP: 0010:__ipv6_get_lladdr net/ipv6/addrconf.c:1838 [inline]
RIP: 0010:ipv6_get_lladdr+0xb5/0x210 net/ipv6/addrconf.c:1860
Code: 00 49 8b 45 10 49 8d 4d 08 48 8d 90 a8 fe ff ff 48 39 c1 75 15 eb 3f 48 8b 82 60 01 00 00 48 8d 90 a8 fe ff ff 48 39 c1 74 2c <0f> b7 80 1a ff ff ff 66 83 f8 20 77 1f 66 83 f8 20 75 da 85 5a 6c
RSP: 0018:ffffc90000003df8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffff88811e002c08
RDX: fffffffffffffea8 RSI: 0000000000000000 RDI: ffff88811e002d88
RBP: ffffc90000003e20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 3030303030302052 R12: ffffc90000003e30
R13: ffff88811e002c00 R14: ffff88811e002d88 R15: ffffffff83298110
FS:  0000000001aee940(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff1a CR3: 000000010aab2000 CR4: 0000000000350ef0