Oops: general protection fault, probably for non-canonical address 0xe81ffbf1100cd9e9: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: maybe wild-memory-access in range [0x40ffff888066cf48-0x40ffff888066cf4f] CPU: 0 UID: 0 PID: 28 Comm: kworker/u8:2 Not tainted 6.13.0-rc4-syzkaller-00004-gf07044dd0df0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:read_pnet include/net/net_namespace.h:393 [inline] RIP: 0010:dev_net include/linux/netdevice.h:2635 [inline] RIP: 0010:rt6_is_valid net/ipv6/route.c:1401 [inline] RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1411 [inline] RIP: 0010:ip6_pol_route+0x531/0x15d0 net/ipv6/route.c:2264 Code: 08 00 74 08 4c 89 f7 e8 6d 53 9e f7 bb 08 01 00 00 49 03 1e e8 40 d4 5b 01 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 41 53 9e f7 41 bc cc 0e 00 00 4c 03 RSP: 0018:ffffc90000007380 EFLAGS: 00010202 RAX: 081ffff1100cd9e9 RBX: 40ffff888066cf48 RCX: dffffc0000000000 RDX: ffff88801dae9e00 RSI: 00000000ff000000 RDI: 0000000000000000 RBP: ffffc900000074d0 R08: ffffffff8a64fceb R09: ffff88801ff42dc0 R10: dffffc0000000000 R11: fffffbfff2030a4f R12: ffffc90000007450 R13: 1ffff92000000e8a R14: ffff88802fb8c641 R15: 00000000ff000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f371ae2a000 CR3: 0000000064c0e000 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+0x58c/0x790 net/ipv6/fib6_rules.c:117 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x859/0xd90 net/ipv6/route.c:2596 ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5672 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5785 process_backlog+0x662/0x15b0 net/core/dev.c:6117 __napi_poll+0xcb/0x490 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7074 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 do_softirq+0x11b/0x1e0 kernel/softirq.c:462 __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:4461 neigh_output include/net/neighbour.h:539 [inline] ip6_finish_output2+0x12c7/0x17b0 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 ndisc_send_ns+0xcc/0x160 net/ipv6/ndisc.c:669 addrconf_dad_work+0xb45/0x16f0 net/ipv6/addrconf.c:4303 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/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:read_pnet include/net/net_namespace.h:393 [inline] RIP: 0010:dev_net include/linux/netdevice.h:2635 [inline] RIP: 0010:rt6_is_valid net/ipv6/route.c:1401 [inline] RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1411 [inline] RIP: 0010:ip6_pol_route+0x531/0x15d0 net/ipv6/route.c:2264 Code: 08 00 74 08 4c 89 f7 e8 6d 53 9e f7 bb 08 01 00 00 49 03 1e e8 40 d4 5b 01 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 41 53 9e f7 41 bc cc 0e 00 00 4c 03 RSP: 0018:ffffc90000007380 EFLAGS: 00010202 RAX: 081ffff1100cd9e9 RBX: 40ffff888066cf48 RCX: dffffc0000000000 RDX: ffff88801dae9e00 RSI: 00000000ff000000 RDI: 0000000000000000 RBP: ffffc900000074d0 R08: ffffffff8a64fceb R09: ffff88801ff42dc0 R10: dffffc0000000000 R11: fffffbfff2030a4f R12: ffffc90000007450 R13: 1ffff92000000e8a R14: ffff88802fb8c641 R15: 00000000ff000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f371ae2a000 CR3: 0000000064c0e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 08 00 or %al,(%rax) 2: 74 08 je 0xc 4: 4c 89 f7 mov %r14,%rdi 7: e8 6d 53 9e f7 call 0xf79e5379 c: bb 08 01 00 00 mov $0x108,%ebx 11: 49 03 1e add (%r14),%rbx 14: e8 40 d4 5b 01 call 0x15bd459 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 41 53 9e f7 call 0xf79e5379 38: 41 bc cc 0e 00 00 mov $0xecc,%r12d 3e: 4c rex.WR 3f: 03 .byte 0x3