Unable to handle kernel paging request at virtual address dfff800000000068 KASAN: null-ptr-deref in range [0x0000000000000340-0x0000000000000347] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000068] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __in6_dev_get include/net/addrconf.h:323 [inline] pc : ip6_ignore_linkdown include/net/addrconf.h:414 [inline] pc : find_match+0xa0/0xb0c net/ipv6/route.c:784 lr : find_match+0x74/0xb0c net/ipv6/route.c:781 sp : ffff8000080065e0 x29: ffff800008006600 x28: 1fffe0001880e0c4 x27: dfff800000000000 x26: 0000000000000340 x25: ffff0000c4070637 x24: 0000000000000201 x23: 0000000000000002 x22: ffff0000c4070620 x21: 0000000000000000 x20: 1fffe0001880e0c6 x19: 0000000000000000 x18: 0000000051763cb3 x17: 0000000000000000 x16: ffff8000082d0e24 x15: 0000000000000000 x14: 000000000000c0fe x13: 1ffff00002a180b1 x12: 0000000000ff0100 x11: ff008000107b6b40 x10: 0000000000000000 x9 : ffff8000150e4800 x8 : 0000000000000068 x7 : ffff800008006990 x6 : 0000000000000002 x5 : ffff800008006990 x4 : ffff800008006980 x3 : 0000000000000002 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __in6_dev_get include/net/addrconf.h:323 [inline] ip6_ignore_linkdown include/net/addrconf.h:414 [inline] find_match+0xa0/0xb0c net/ipv6/route.c:784 rt6_nh_find_match+0xcc/0x138 net/ipv6/route.c:824 nexthop_for_each_fib6_nh+0x1a8/0x3d0 net/ipv4/nexthop.c:1243 __find_rr_leaf+0x3b8/0x5c8 net/ipv6/route.c:865 find_rr_leaf net/ipv6/route.c:893 [inline] rt6_select net/ipv6/route.c:937 [inline] fib6_table_lookup+0x308/0x8b8 net/ipv6/route.c:2223 ip6_pol_route+0x1f4/0x1024 net/ipv6/route.c:2259 ip6_pol_route_output+0x60/0x94 net/ipv6/route.c:2634 pol_lookup_func include/net/ip6_fib.h:579 [inline] fib6_rule_lookup+0x258/0x4a8 net/ipv6/fib6_rules.c:121 ip6_route_output_flags_noref+0x250/0x314 net/ipv6/route.c:2666 ip6_route_output_flags+0xe4/0x368 net/ipv6/route.c:2679 ip6_route_output include/net/ip6_route.h:98 [inline] ip6_dst_lookup_tail+0x168/0x12c0 net/ipv6/ip6_output.c:1124 ip6_dst_lookup_flow+0x54/0xe0 net/ipv6/ip6_output.c:1255 geneve_get_v6_dst+0x648/0x954 drivers/net/geneve.c:901 geneve6_xmit_skb drivers/net/geneve.c:1038 [inline] geneve_xmit+0x970/0x2f18 drivers/net/geneve.c:1122 __netdev_start_xmit include/linux/netdevice.h:4896 [inline] netdev_start_xmit include/linux/netdevice.h:4910 [inline] xmit_one net/core/dev.c:3670 [inline] dev_hard_start_xmit+0x244/0x8e0 net/core/dev.c:3686 __dev_queue_xmit+0x155c/0x309c net/core/dev.c:4346 dev_queue_xmit include/linux/netdevice.h:3051 [inline] neigh_resolve_output+0x550/0x650 net/core/neighbour.c:1568 neigh_output include/net/neighbour.h:545 [inline] ip6_finish_output2+0xd60/0x1844 net/ipv6/ip6_output.c:138 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline] ip6_finish_output+0x594/0x930 net/ipv6/ip6_output.c:216 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip6_output+0x274/0x500 net/ipv6/ip6_output.c:237 dst_output include/net/dst.h:453 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xc38/0x1680 net/ipv6/ndisc.c:513 ndisc_send_rs+0x378/0x514 net/ipv6/ndisc.c:723 addrconf_rs_timer+0x2f4/0x574 net/ipv6/addrconf.c:3979 call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x460/0x6bc kernel/time/timer.c:1820 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35 default_idle_call+0x68/0xdc kernel/sched/idle.c:109 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1d8/0x4bc kernel/sched/idle.c:303 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:401 rest_init+0x2d4/0x2f0 init/main.c:733 start_kernel+0x0/0x554 init/main.c:893 start_kernel+0x4a4/0x554 init/main.c:1140 __primary_switched+0xb8/0xc0 arch/arm64/kernel/head.S:468 Code: 96047f81 f94002c8 910d011a d343ff48 (387b6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 96047f81 bl 0xfffffffff811fe04 4: f94002c8 ldr x8, [x22] 8: 910d011a add x26, x8, #0x340 c: d343ff48 lsr x8, x26, #3 * 10: 387b6908 ldrb w8, [x8, x27] <-- trapping instruction