==================================================================
BUG: KASAN: use-after-free in hlist_move_list include/linux/list.h:852 [inline]
BUG: KASAN: use-after-free in __collect_expired_timers kernel/time/timer.c:1484 [inline]
BUG: KASAN: use-after-free in collect_expired_timers kernel/time/timer.c:1719 [inline]
BUG: KASAN: use-after-free in __run_timers+0x4a8/0x6b0 kernel/time/timer.c:1783
Write of size 8 at addr ffff8881e41531c8 by task syz-executor.1/14051

CPU: 0 PID: 14051 Comm: syz-executor.1 Not tainted 5.4.210-syzkaller-00030-g871bb50ab5b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18e/0x1d5 lib/dump_stack.c:118
 print_address_description+0x8c/0x630 mm/kasan/report.c:384
 __kasan_report+0xf6/0x130 mm/kasan/report.c:516
 kasan_report+0x30/0x60 mm/kasan/common.c:653
 hlist_move_list include/linux/list.h:852 [inline]
 __collect_expired_timers kernel/time/timer.c:1484 [inline]
 collect_expired_timers kernel/time/timer.c:1719 [inline]
 __run_timers+0x4a8/0x6b0 kernel/time/timer.c:1783
 run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
 __do_softirq+0x23e/0x643 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x195/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:538 [inline]
 smp_apic_timer_interrupt+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
 </IRQ>
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x4d/0x80 kernel/locking/spinlock.c:191
Code: 74 0c 48 c7 c7 d0 cd aa 85 e8 ff 15 6d fd 48 83 3d d7 d8 8a 01 00 74 36 48 89 df e8 ed 87 29 fd 66 90 4c 89 34 24 ff 34 24 9d <bf> 01 00 00 00 e8 09 fa 22 fd 65 8b 05 6e 98 e2 7b 85 c0 74 08 48
RSP: 0018:ffff8881e8257ae0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffffffff86bcdc80 RCX: dffffc0000000000
RDX: ffffc90000948000 RSI: 0000000000000246 RDI: ffffffff86bcdc80
RBP: 0000000000000002 R08: ffffffff818177b7 R09: fffff5200001583c
R10: fffff5200001583c R11: 1ffff9200001583b R12: ffff8881f09f1400
R13: 00000000000e3bb8 R14: 0000000000000246 R15: 0000000000000002
 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline]
 pcpu_alloc+0x6dc/0x1060 mm/percpu.c:1701
 prealloc_init kernel/bpf/hashtab.c:154 [inline]
 htab_map_alloc+0x88c/0x11f0 kernel/bpf/hashtab.c:378
 find_and_alloc_map kernel/bpf/syscall.c:122 [inline]
 map_create kernel/bpf/syscall.c:573 [inline]
 __do_sys_bpf kernel/bpf/syscall.c:2871 [inline]
 __se_sys_bpf+0x301e/0xba40 kernel/bpf/syscall.c:2847
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fb793f955a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb79310a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fb7940b6f80 RCX: 00007fb793f955a9
RDX: 0000000000000048 RSI: 00000000200002c0 RDI: 0000000000000000
RBP: 00007fb793ff0580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca198e27f R14: 00007fb79310a300 R15: 0000000000022000

The buggy address belongs to the page:
page:ffffea00079054c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x8000000000000000()
raw: 8000000000000000 0000000000000000 ffffea0007905488 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x146dc0(GFP_USER|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_COMP|__GFP_ZERO)
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook mm/page_alloc.c:2165 [inline]
 prep_new_page+0x194/0x380 mm/page_alloc.c:2171
 get_page_from_freelist+0x524/0x560 mm/page_alloc.c:3794
 __alloc_pages_nodemask+0x2ab/0x6f0 mm/page_alloc.c:4857
 __alloc_pages include/linux/gfp.h:503 [inline]
 __alloc_pages_node include/linux/gfp.h:516 [inline]
 alloc_pages_node include/linux/gfp.h:530 [inline]
 kmalloc_order mm/slab_common.c:1342 [inline]
 kmalloc_order_trace+0x2a/0xf0 mm/slab_common.c:1358
 __kmalloc_node include/linux/slab.h:422 [inline]
 kmalloc_node include/linux/slab.h:599 [inline]
 kvmalloc_node+0x7e/0xf0 mm/util.c:596
 kvmalloc include/linux/mm.h:759 [inline]
 kvzalloc include/linux/mm.h:767 [inline]
 alloc_netdev_mqs+0x86/0xc30 net/core/dev.c:9597
 tun_set_iff+0x4f9/0x1050 drivers/net/tun.c:2825
 __tun_chr_ioctl+0x6c7/0x1b70 drivers/net/tun.c:3160
 do_vfs_ioctl+0x6d1/0x15b0 fs/ioctl.c:47
 ksys_ioctl fs/ioctl.c:742 [inline]
 __do_sys_ioctl fs/ioctl.c:749 [inline]
 __se_sys_ioctl fs/ioctl.c:747 [inline]
 __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1176 [inline]
 __free_pages_ok+0x7ee/0x920 mm/page_alloc.c:1438
 free_the_page mm/page_alloc.c:4919 [inline]
 __free_pages+0x45/0x1e0 mm/page_alloc.c:4925
 kfree+0x1ef/0x260 mm/slub.c:4068
 device_release+0x70/0x1a0 drivers/base/core.c:1776
 kobject_cleanup lib/kobject.c:708 [inline]
 kobject_release+0x20c/0x330 lib/kobject.c:739
 tun_set_iff+0xc0b/0x1050 drivers/net/tun.c:2917
 __tun_chr_ioctl+0x6c7/0x1b70 drivers/net/tun.c:3160
 do_vfs_ioctl+0x6d1/0x15b0 fs/ioctl.c:47
 ksys_ioctl fs/ioctl.c:742 [inline]
 __do_sys_ioctl fs/ioctl.c:749 [inline]
 __se_sys_ioctl fs/ioctl.c:747 [inline]
 __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Memory state around the buggy address:
 ffff8881e4153080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881e4153100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881e4153180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff8881e4153200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881e4153280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
----------------
Code disassembly (best guess):
   0:	74 0c                	je     0xe
   2:	48 c7 c7 d0 cd aa 85 	mov    $0xffffffff85aacdd0,%rdi
   9:	e8 ff 15 6d fd       	callq  0xfd6d160d
   e:	48 83 3d d7 d8 8a 01 	cmpq   $0x0,0x18ad8d7(%rip)        # 0x18ad8ed
  15:	00
  16:	74 36                	je     0x4e
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 ed 87 29 fd       	callq  0xfd29880d
  20:	66 90                	xchg   %ax,%ax
  22:	4c 89 34 24          	mov    %r14,(%rsp)
  26:	ff 34 24             	pushq  (%rsp)
  29:	9d                   	popfq
* 2a:	bf 01 00 00 00       	mov    $0x1,%edi <-- trapping instruction
  2f:	e8 09 fa 22 fd       	callq  0xfd22fa3d
  34:	65 8b 05 6e 98 e2 7b 	mov    %gs:0x7be2986e(%rip),%eax        # 0x7be298a9
  3b:	85 c0                	test   %eax,%eax
  3d:	74 08                	je     0x47
  3f:	48                   	rex.W