Oops: general protection fault, probably for non-canonical address 0xf81ffbf1100c1d95: 0000 [#1] SMP KASAN PTI KASAN: maybe wild-memory-access in range [0xc0ffff888060eca8-0xc0ffff888060ecaf] CPU: 1 UID: 0 PID: 5898 Comm: kworker/1:5 Not tainted 6.15.0-rc7-syzkaller-00152-gd0c22de9995b #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: mld mld_ifc_work RIP: 0010:read_pnet include/net/net_namespace.h:409 [inline] RIP: 0010:dev_net include/linux/netdevice.h:2708 [inline] RIP: 0010:rt6_is_valid net/ipv6/route.c:1435 [inline] RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1445 [inline] RIP: 0010:ip6_pol_route+0x497/0x1180 net/ipv6/route.c:2299 Code: e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 4f e6 18 f8 41 bf 08 01 00 00 4d 03 3c 24 e8 30 ae 48 01 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 2a e6 18 f8 41 be 0c 0f 00 00 4d RSP: 0018:ffffc90000a08540 EFLAGS: 00010a06 RAX: 181ffff1100c1d95 RBX: 00000000ff000000 RCX: ffff88807cf41e00 RDX: ffff88807cf41e00 RSI: 00000000ff000000 RDI: 0000000000000000 RBP: ffffc90000a08650 R08: 0000000000000000 R09: ffff888068250280 R10: dffffc0000000000 R11: fffffbfff1efc16f R12: ffff888033c48501 R13: ffffffff8a06dcf2 R14: dffffc0000000000 R15: c0ffff888060eca8 FS: 0000000000000000(0000) GS:ffff8881261f6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdf35e2ade5 CR3: 000000007ed1c000 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+0x52f/0x6f0 net/ipv6/fib6_rules.c:120 ip6_route_input_lookup net/ipv6/route.c:2335 [inline] ip6_route_input+0x6ce/0xa50 net/ipv6/route.c:2631 ip6_rcv_finish+0x141/0x2d0 net/ipv6/ip6_input.c:77 NF_HOOK+0x30c/0x3a0 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5887 [inline] __netif_receive_skb+0xd3/0x380 net/core/dev.c:6000 process_backlog+0x60e/0x14f0 net/core/dev.c:6352 __napi_poll+0xc7/0x480 net/core/dev.c:7324 napi_poll net/core/dev.c:7388 [inline] net_rx_action+0x6ea/0xdf0 net/core/dev.c:7510 handle_softirqs+0x283/0x870 kernel/softirq.c:579 do_softirq+0xec/0x180 kernel/softirq.c:480 __local_bh_enable_ip+0x17d/0x1c0 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+0x1cd7/0x3a70 net/core/dev.c:4656 dev_queue_xmit include/linux/netdevice.h:3350 [inline] neigh_hh_output include/net/neighbour.h:523 [inline] neigh_output include/net/neighbour.h:537 [inline] ip6_finish_output2+0x11bc/0x16a0 net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x234/0x7d0 net/ipv6/ip6_output.c:226 NF_HOOK+0x9e/0x380 include/linux/netfilter.h:314 mld_sendpack+0x800/0xd80 net/ipv6/mcast.c:1868 mld_send_cr net/ipv6/mcast.c:2169 [inline] mld_ifc_work+0x835/0xde0 net/ipv6/mcast.c:2702 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xade/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 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:read_pnet include/net/net_namespace.h:409 [inline] RIP: 0010:dev_net include/linux/netdevice.h:2708 [inline] RIP: 0010:rt6_is_valid net/ipv6/route.c:1435 [inline] RIP: 0010:rt6_get_pcpu_route net/ipv6/route.c:1445 [inline] RIP: 0010:ip6_pol_route+0x497/0x1180 net/ipv6/route.c:2299 Code: e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 4f e6 18 f8 41 bf 08 01 00 00 4d 03 3c 24 e8 30 ae 48 01 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 2a e6 18 f8 41 be 0c 0f 00 00 4d RSP: 0018:ffffc90000a08540 EFLAGS: 00010a06 RAX: 181ffff1100c1d95 RBX: 00000000ff000000 RCX: ffff88807cf41e00 RDX: ffff88807cf41e00 RSI: 00000000ff000000 RDI: 0000000000000000 RBP: ffffc90000a08650 R08: 0000000000000000 R09: ffff888068250280 R10: dffffc0000000000 R11: fffffbfff1efc16f R12: ffff888033c48501 R13: ffffffff8a06dcf2 R14: dffffc0000000000 R15: c0ffff888060eca8 FS: 0000000000000000(0000) GS:ffff8881261f6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdf35e2ade5 CR3: 000000007ed1c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e0 48 loopne 0x4a 2: c1 e8 03 shr $0x3,%eax 5: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) a: 74 08 je 0x14 c: 4c 89 e7 mov %r12,%rdi f: e8 4f e6 18 f8 call 0xf818e663 14: 41 bf 08 01 00 00 mov $0x108,%r15d 1a: 4d 03 3c 24 add (%r12),%r15 1e: e8 30 ae 48 01 call 0x148ae53 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 2a e6 18 f8 call 0xf818e663 39: 41 be 0c 0f 00 00 mov $0xf0c,%r14d 3f: 4d rex.WRB