Oops: general protection fault, probably for non-canonical address 0xdffffc0000000017: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000000b8-0x00000000000000bf]
CPU: 2 PID: 13 Comm: kworker/u32:1 Not tainted 6.10.0-rc4-syzkaller-00301-g5f583a3162ff #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1410 [inline]
RIP: 0010:ip6_pol_route+0x3bc/0x1150 net/ipv6/route.c:2266
Code: f8 48 85 ed 0f 84 52 03 00 00 e8 df ae 04 f8 48 8d bd 98 00 00 00 49 89 ec 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a3 08 00 00 8b 85 98 00 00 00
RSP: 0018:ffffc900005407f8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888020353980 RCX: ffffffff8989e103
RDX: 0000000000000017 RSI: ffffffff8989e111 RDI: 00000000000000bb
RBP: 0000000000000023 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000023 R11: 0000000000000006 R12: 0000000000000023
R13: 1ffff920000a8103 R14: 0000000000000080 R15: ffffc90000540878
FS: 0000000000000000(0000) GS:ffff88802c200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ee888000 CR3: 000000004b2e8000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x536/0x720 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2302 [inline]
ip6_route_input+0x60b/0xc10 net/ipv6/route.c:2598
ip6_rcv_finish_core.constprop.0+0x1a0/0x5d0 net/ipv6/ip6_input.c:66
ip6_rcv_finish net/ipv6/ip6_input.c:77 [inline]
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ipv6_rcv+0x1e4/0x680 net/ipv6/ip6_input.c:310
__netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5625
__netif_receive_skb+0x1d/0x160 net/core/dev.c:5739
process_backlog+0x133/0x760 net/core/dev.c:6068
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6722
napi_poll net/core/dev.c:6791 [inline]
net_rx_action+0x9b6/0xf10 net/core/dev.c:6907
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
do_softirq kernel/softirq.c:455 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:442
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:851 [inline]
__dev_queue_xmit+0x872/0x4130 net/core/dev.c:4420
dev_queue_xmit include/linux/netdevice.h:3095 [inline]
neigh_resolve_output net/core/neighbour.c:1565 [inline]
neigh_resolve_output+0x5bc/0x950 net/core/neighbour.c:1545
neigh_output include/net/neighbour.h:542 [inline]
ip6_finish_output2+0x673/0x1880 net/ipv6/ip6_output.c:137
__ip6_finish_output net/ipv6/ip6_output.c:211 [inline]
ip6_finish_output+0x3f9/0x1300 net/ipv6/ip6_output.c:222
NF_HOOK_COND include/linux/netfilter.h:303 [inline]
ip6_output+0x1f8/0x540 net/ipv6/ip6_output.c:243
dst_output include/net/dst.h:450 [inline]
NF_HOOK include/linux/netfilter.h:314 [inline]
ndisc_send_skb+0xa2d/0x1c30 net/ipv6/ndisc.c:509
ndisc_send_ns+0xc7/0x150 net/ipv6/ndisc.c:667
addrconf_dad_work+0xca5/0x1500 net/ipv6/addrconf.c:4281
process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1410 [inline]
RIP: 0010:ip6_pol_route+0x3bc/0x1150 net/ipv6/route.c:2266
Code: f8 48 85 ed 0f 84 52 03 00 00 e8 df ae 04 f8 48 8d bd 98 00 00 00 49 89 ec 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a3 08 00 00 8b 85 98 00 00 00
RSP: 0018:ffffc900005407f8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888020353980 RCX: ffffffff8989e103
RDX: 0000000000000017 RSI: ffffffff8989e111 RDI: 00000000000000bb
RBP: 0000000000000023 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000023 R11: 0000000000000006 R12: 0000000000000023
R13: 1ffff920000a8103 R14: 0000000000000080 R15: ffffc90000540878
FS: 0000000000000000(0000) GS:ffff88802c200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ee888000 CR3: 000000004b2e8000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: f8 clc
1: 48 85 ed test %rbp,%rbp
4: 0f 84 52 03 00 00 je 0x35c
a: e8 df ae 04 f8 call 0xf804aeee
f: 48 8d bd 98 00 00 00 lea 0x98(%rbp),%rdi
16: 49 89 ec mov %rbp,%r12
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 08 je 0x3a
32: 3c 03 cmp $0x3,%al
34: 0f 8e a3 08 00 00 jle 0x8dd
3a: 8b 85 98 00 00 00 mov 0x98(%rbp),%eax