Oops: general protection fault, probably for non-canonical address 0xdffffc0000000013: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f]
CPU: 1 UID: 0 PID: 5899 Comm: kworker/1:6 Not tainted 6.15.0-rc3-syzkaller-00019-gbc3372351d0c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: mld mld_ifc_work
RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1445 [inline]
RIP: 0010:ip6_pol_route+0x4e0/0x15f0 net/ipv6/route.c:2299
Code: 6a f7 48 8b 03 65 4c 8b 30 31 ff 4c 89 f6 e8 d7 41 03 f7 4d 85 f6 0f 84 da 00 00 00 49 8d 9e 98 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 26 0f 00 00 44 8b 3b 31 ff 44 89 fe e8
RSP: 0018:ffffc90000a08380 EFLAGS: 00010202
RAX: 0000000000000013 RBX: 0000000000000099 RCX: ffff8880409e1e00
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000a084d0 R08: ffffffff8abf7f69 R09: ffff888055671000
R10: dffffc0000000000 R11: fffffbfff20bd76f R12: ffffc90000a08450
R13: 1ffff9200014108a R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881250cf000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f83c2806000 CR3: 000000007e040000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x590/0x7a0 net/ipv6/fib6_rules.c:120
ip6_route_input_lookup net/ipv6/route.c:2335 [inline]
ip6_route_input+0x85b/0xda0 net/ipv6/route.c:2631
ip6_rcv_finish+0x140/0x3d0 net/ipv6/ip6_input.c:77
NF_HOOK+0x3a0/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5887 [inline]
__netif_receive_skb+0x1ef/0x670 net/core/dev.c:6000
process_backlog+0x664/0x15c0 net/core/dev.c:6352
__napi_poll+0xcb/0x480 net/core/dev.c:7324
napi_poll net/core/dev.c:7388 [inline]
net_rx_action+0x89d/0x1240 net/core/dev.c:7510
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
do_softirq+0x11f/0x1e0 kernel/softirq.c:480
__local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:407
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
__dev_queue_xmit+0x1780/0x3f60 net/core/dev.c:4656
neigh_output include/net/neighbour.h:539 [inline]
ip6_finish_output2+0x1296/0x1750 net/ipv6/ip6_output.c:141
__ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
ip6_finish_output+0x421/0x840 net/ipv6/ip6_output.c:226
NF_HOOK+0xa0/0x440 include/linux/netfilter.h:314
mld_sendpack+0x84a/0xdc0 net/ipv6/mcast.c:1868
mld_send_cr net/ipv6/mcast.c:2169 [inline]
mld_ifc_work+0x7d9/0xd90 net/ipv6/mcast.c:2702
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1445 [inline]
RIP: 0010:ip6_pol_route+0x4e0/0x15f0 net/ipv6/route.c:2299
Code: 6a f7 48 8b 03 65 4c 8b 30 31 ff 4c 89 f6 e8 d7 41 03 f7 4d 85 f6 0f 84 da 00 00 00 49 8d 9e 98 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 26 0f 00 00 44 8b 3b 31 ff 44 89 fe e8
RSP: 0018:ffffc90000a08380 EFLAGS: 00010202
RAX: 0000000000000013 RBX: 0000000000000099 RCX: ffff8880409e1e00
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000a084d0 R08: ffffffff8abf7f69 R09: ffff888055671000
R10: dffffc0000000000 R11: fffffbfff20bd76f R12: ffffc90000a08450
R13: 1ffff9200014108a R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881250cf000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f83c2806000 CR3: 000000007e040000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 6a f7 push $0xfffffffffffffff7
2: 48 8b 03 mov (%rbx),%rax
5: 65 4c 8b 30 mov %gs:(%rax),%r14
9: 31 ff xor %edi,%edi
b: 4c 89 f6 mov %r14,%rsi
e: e8 d7 41 03 f7 call 0xf70341ea
13: 4d 85 f6 test %r14,%r14
16: 0f 84 da 00 00 00 je 0xf6
1c: 49 8d 9e 98 00 00 00 lea 0x98(%r14),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 26 0f 00 00 jne 0xf5d
37: 44 8b 3b mov (%rbx),%r15d
3a: 31 ff xor %edi,%edi
3c: 44 89 fe mov %r15d,%esi
3f: e8 .byte 0xe8