==================================================================
BUG: KASAN: slab-out-of-bounds in tick_sched_handle+0x16f/0x190 kernel/time/tick-sched.c:161
kasan: CONFIG_KASAN_INLINE enabled
Read of size 8 at addr ffff8880a9dd4f20 by task syz-executor4/8394
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.20.0+ #13
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_accessed kernel/locking/lockdep.c:968 [inline]
RIP: 0010:__bfs kernel/locking/lockdep.c:1035 [inline]
RIP: 0010:__bfs+0x2ce/0x7a0 kernel/locking/lockdep.c:989
Code: 49 01 00 00 49 8d 7f 10 4c 89 f8 4c 8b 1d ea d7 ee 09 48 89 f9 48 2d 20 47 32 8b 44 8b 15 3a d6 61 09 48 c1 e9 03 48 c1 f8 06 <42> 80 3c 21 00 0f 85 2c 03 00 00 49 8b 77 10 4c 8d 46 2c 4c 89 c1
RSP: 0018:ffff8880ae707110 EFLAGS: 00010003
RAX: 0000000001d336e3 RBX: ffffed1015ce0e3b RCX: 0000000000000002
RDX: 1ffff11015ce0e37 RSI: 0000000000000001 RDI: 0000000000000010
RBP: ffff8880ae707240 R08: 0000000000000001 R09: 1ffff11015ce0e3b
R10: 000000000000ea77 R11: 0000000000002412 R12: dffffc0000000000
R13: ffffffff8b300150 R14: ffff8880ae707218 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc15e82db8 CR3: 0000000085d5b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __bfs_forwards kernel/locking/lockdep.c:1063 [inline]
 find_usage_forwards kernel/locking/lockdep.c:1363 [inline]
 check_usage_forwards+0x164/0x3e0 kernel/locking/lockdep.c:2575
 mark_lock_irq kernel/locking/lockdep.c:2690 [inline]
 mark_lock+0x519/0x1cd0 kernel/locking/lockdep.c:3062
 mark_irqflags kernel/locking/lockdep.c:2940 [inline]
 __lock_acquire+0x139c/0x4a30 kernel/locking/lockdep.c:3295
 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 __queue_work+0x2d9/0x1450 kernel/workqueue.c:1417
 delayed_work_timer_fn+0x5d/0x90 kernel/workqueue.c:1500
 call_timer_fn+0x254/0x900 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1358 [inline]
 __run_timers+0x4a2/0xd50 kernel/time/timer.c:1681
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1694
 __do_softirq+0x30b/0xb11 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:native_safe_halt+0x2/0x10 arch/x86/include/asm/irqflags.h:58
Code: ff ff ff 48 89 c7 48 89 45 d8 e8 89 ee d1 f9 48 8b 45 d8 e9 ce fe ff ff 48 89 df e8 78 ee d1 f9 eb 82 90 90 90 90 90 90 fb f4 <c3> 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f4 c3 90 90 90 90 90 90
RSP: 0018:ffff8880a9497cd0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1325001 RBX: 1ffff11015292f9d RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9486bbc
RBP: ffff8880a9497d90 R08: ffff8880a9486340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880a9497d68 R14: 0000000000000000 R15: ffffffff89927ff8
 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:555
 default_idle_call+0x36/0x90 kernel/sched/idle.c:93
 cpuidle_idle_call kernel/sched/idle.c:153 [inline]
 do_idle+0x386/0x5d0 kernel/sched/idle.c:262
 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:353
 start_secondary+0x435/0x620 arch/x86/kernel/smpboot.c:271
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
Modules linked in:
---[ end trace 3c655fbb8902ece2 ]---
RIP: 0010:lock_accessed kernel/locking/lockdep.c:968 [inline]
RIP: 0010:__bfs kernel/locking/lockdep.c:1035 [inline]
RIP: 0010:__bfs+0x2ce/0x7a0 kernel/locking/lockdep.c:989
Code: 49 01 00 00 49 8d 7f 10 4c 89 f8 4c 8b 1d ea d7 ee 09 48 89 f9 48 2d 20 47 32 8b 44 8b 15 3a d6 61 09 48 c1 e9 03 48 c1 f8 06 <42> 80 3c 21 00 0f 85 2c 03 00 00 49 8b 77 10 4c 8d 46 2c 4c 89 c1
RSP: 0018:ffff8880ae707110 EFLAGS: 00010003
RAX: 0000000001d336e3 RBX: ffffed1015ce0e3b RCX: 0000000000000002
RDX: 1ffff11015ce0e37 RSI: 0000000000000001 RDI: 0000000000000010
RBP: ffff8880ae707240 R08: 0000000000000001 R09: 1ffff11015ce0e3b
R10: 000000000000ea77 R11: 0000000000002412 R12: dffffc0000000000
R13: ffffffff8b300150 R14: ffff8880ae707218 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc15e82db8 CR3: 0000000085d5b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400