BUG: unable to handle page fault for address: ffffff06e9c48959
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 131e1067 P4D 131e1067 PUD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 56 Comm: kworker/u4:4 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:find_stack lib/stackdepot.c:553 [inline]
RIP: 0010:stack_depot_save_flags+0x1b4/0x940 lib/stackdepot.c:618
Code: 00 31 f6 48 89 d5 4c 89 cb e8 28 2c c8 ff 49 89 d9 8b 5c 24 04 48 89 ea 4c 8b 44 24 08 45 85 e4 75 67 4d 8b 3f 49 39 d7 74 5c <45> 39 77 10 75 f2 45 39 4f 14 75 ec 31 c0 49 8b 0c c0 49 3b 4c c7
RSP: 0018:ffffc90000007370 EFLAGS: 00010206
RAX: ffff88805e200000 RBX: 0000000000000001 RCX: 0000000000c30250
RDX: ffff88805ee30250 RSI: 0000000000000001 RDI: 00000000af132f4f
RBP: 000000005456f12f R08: ffffc900000073e0 R09: 0000000000000017
R10: ffffc900000072b0 R11: ffffffff81ab0e90 R12: ffffea00007ee100
R13: 0000000000000017 R14: 00000000213c3025 R15: ffffff06e9c48949
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffff06e9c48959 CR3: 0000000011dda000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x51/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kmem_cache_free+0x195/0x410 mm/slub.c:4711
 kfree_skb_reason include/linux/skbuff.h:1271 [inline]
 __netif_receive_skb_core+0x3eea/0x4540 net/core/dev.c:5802
 __netif_receive_skb_one_core net/core/dev.c:5826 [inline]
 __netif_receive_skb+0x12f/0x650 net/core/dev.c:5941
 process_backlog+0x662/0x15b0 net/core/dev.c:6289
 __napi_poll+0xcb/0x490 net/core/dev.c:7106
 napi_poll net/core/dev.c:7175 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:7297
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 do_softirq+0x11b/0x1e0 kernel/softirq.c:462
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
 __dev_queue_xmit+0x1775/0x3f50 net/core/dev.c:4611
 neigh_output include/net/neighbour.h:539 [inline]
 ip6_finish_output2+0x12ad/0x1780 net/ipv6/ip6_output.c:141
 ip6_finish_output+0x41e/0x840 net/ipv6/ip6_output.c:226
 NF_HOOK include/linux/netfilter.h:314 [inline]
 ndisc_send_skb+0xb30/0x1450 net/ipv6/ndisc.c:511
 addrconf_dad_completed+0x76c/0xcd0 net/ipv6/addrconf.c:4356
 addrconf_dad_work+0xdbc/0x16a0
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
CR2: ffffff06e9c48959
---[ end trace 0000000000000000 ]---
RIP: 0010:find_stack lib/stackdepot.c:553 [inline]
RIP: 0010:stack_depot_save_flags+0x1b4/0x940 lib/stackdepot.c:618
Code: 00 31 f6 48 89 d5 4c 89 cb e8 28 2c c8 ff 49 89 d9 8b 5c 24 04 48 89 ea 4c 8b 44 24 08 45 85 e4 75 67 4d 8b 3f 49 39 d7 74 5c <45> 39 77 10 75 f2 45 39 4f 14 75 ec 31 c0 49 8b 0c c0 49 3b 4c c7
RSP: 0018:ffffc90000007370 EFLAGS: 00010206
RAX: ffff88805e200000 RBX: 0000000000000001 RCX: 0000000000c30250
RDX: ffff88805ee30250 RSI: 0000000000000001 RDI: 00000000af132f4f
RBP: 000000005456f12f R08: ffffc900000073e0 R09: 0000000000000017
R10: ffffc900000072b0 R11: ffffffff81ab0e90 R12: ffffea00007ee100
R13: 0000000000000017 R14: 00000000213c3025 R15: ffffff06e9c48949
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffff06e9c48959 CR3: 0000000011dda000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 31                	add    %dh,(%rcx)
   2:	f6 48 89 d5          	testb  $0xd5,-0x77(%rax)
   6:	4c 89 cb             	mov    %r9,%rbx
   9:	e8 28 2c c8 ff       	call   0xffc82c36
   e:	49 89 d9             	mov    %rbx,%r9
  11:	8b 5c 24 04          	mov    0x4(%rsp),%ebx
  15:	48 89 ea             	mov    %rbp,%rdx
  18:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1d:	45 85 e4             	test   %r12d,%r12d
  20:	75 67                	jne    0x89
  22:	4d 8b 3f             	mov    (%r15),%r15
  25:	49 39 d7             	cmp    %rdx,%r15
  28:	74 5c                	je     0x86
* 2a:	45 39 77 10          	cmp    %r14d,0x10(%r15) <-- trapping instruction
  2e:	75 f2                	jne    0x22
  30:	45 39 4f 14          	cmp    %r9d,0x14(%r15)
  34:	75 ec                	jne    0x22
  36:	31 c0                	xor    %eax,%eax
  38:	49 8b 0c c0          	mov    (%r8,%rax,8),%rcx
  3c:	49                   	rex.WB
  3d:	3b                   	.byte 0x3b
  3e:	4c                   	rex.WR
  3f:	c7                   	.byte 0xc7