Unable to handle kernel paging request at virtual address dfff800000000018 KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000018] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 10078 Comm: syz.6.786 Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __in6_dev_get include/net/addrconf.h:347 [inline] pc : ip6_ignore_linkdown include/net/addrconf.h:443 [inline] pc : find_match+0xa0/0xacc net/ipv6/route.c:781 lr : find_match+0x74/0xacc net/ipv6/route.c:778 sp : ffff8000800066c0 x29: ffff8000800066e0 x28: 1fffe0001a55f686 x27: 1fffe0001a55f684 x26: 00000000000000c0 x25: ffff0000d2afb437 x24: 0000000000000201 x23: 0000000000000002 x22: ffff0000d2afb420 x21: 0000000000000000 x20: dfff800000000000 x19: 0000000000000000 x18: 0000000009000f0f x17: 0000000000000000 x16: ffff80008051eb44 x15: 0000000000000002 x14: 1ffff00010000d1c x13: 0000000000000000 x12: 0000000000000000 x11: ffff700010000d1e x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000018 x7 : ffff800080006a70 x6 : 0000000000000002 x5 : ffff800080006a70 x4 : ffff800080006a60 x3 : 0000000000000002 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __in6_dev_get include/net/addrconf.h:347 [inline] (P) ip6_ignore_linkdown include/net/addrconf.h:443 [inline] (P) find_match+0xa0/0xacc net/ipv6/route.c:781 (P) rt6_nh_find_match+0xcc/0x138 net/ipv6/route.c:821 nexthop_for_each_fib6_nh+0x1a8/0x3d0 net/ipv4/nexthop.c:1516 __find_rr_leaf+0x3b8/0x5c8 net/ipv6/route.c:862 find_rr_leaf net/ipv6/route.c:890 [inline] rt6_select net/ipv6/route.c:934 [inline] fib6_table_lookup+0x308/0x8b8 net/ipv6/route.c:2232 ip6_pol_route+0x1f8/0x1014 net/ipv6/route.c:2268 ip6_pol_route_output+0x60/0x94 net/ipv6/route.c:2650 pol_lookup_func include/net/ip6_fib.h:617 [inline] fib6_rule_lookup+0x258/0x45c net/ipv6/fib6_rules.c:125 ip6_route_output_flags_noref net/ipv6/route.c:2683 [inline] ip6_route_output_flags+0x2e4/0x578 net/ipv6/route.c:2695 ip6_route_output include/net/ip6_route.h:93 [inline] ip6_dst_lookup_tail+0x168/0x12e4 net/ipv6/ip6_output.c:1128 ip6_dst_lookup_flow+0x54/0xe0 net/ipv6/ip6_output.c:1259 udp_tunnel6_dst_lookup+0x1e8/0x354 net/ipv6/ip6_udp_tunnel.c:165 geneve6_xmit_skb drivers/net/geneve.c:957 [inline] geneve_xmit+0xd28/0x2afc drivers/net/geneve.c:1043 __netdev_start_xmit include/linux/netdevice.h:5215 [inline] netdev_start_xmit include/linux/netdevice.h:5224 [inline] xmit_one net/core/dev.c:3830 [inline] dev_hard_start_xmit+0x2b0/0x890 net/core/dev.c:3846 __dev_queue_xmit+0x15a4/0x31f0 net/core/dev.c:4713 dev_queue_xmit include/linux/netdevice.h:3355 [inline] neigh_hh_output include/net/neighbour.h:523 [inline] neigh_output include/net/neighbour.h:537 [inline] ip6_finish_output2+0x1510/0x1c7c net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x418/0x7b4 net/ipv6/ip6_output.c:226 NF_HOOK_COND include/linux/netfilter.h:306 [inline] ip6_output+0x274/0x504 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:459 [inline] NF_HOOK include/linux/netfilter.h:317 [inline] ndisc_send_skb+0xb48/0x1524 net/ipv6/ndisc.c:513 ndisc_send_rs+0x378/0x514 net/ipv6/ndisc.c:723 addrconf_rs_timer+0x2f4/0x580 net/ipv6/addrconf.c:4041 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x51c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __el1_irq arch/arm64/kernel/entry-common.c:584 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:598 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:603 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) raw_spin_rq_unlock_irq kernel/sched/sched.h:1544 [inline] (P) finish_lock_switch+0xb4/0x1c0 kernel/sched/core.c:5144 (P) finish_task_switch+0x120/0x5a4 kernel/sched/core.c:5262 context_switch kernel/sched/core.c:5399 [inline] __schedule+0x1418/0x2a28 kernel/sched/core.c:6785 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7108 arm64_preempt_schedule_irq+0x44/0x58 arch/arm64/kernel/entry-common.c:301 __el1_irq arch/arm64/kernel/entry-common.c:586 [inline] el1_interrupt+0x3c/0x54 arch/arm64/kernel/entry-common.c:598 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:603 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 preempt_count arch/arm64/include/asm/preempt.h:-1 [inline] (P) preempt_schedule kernel/sched/core.c:6987 [inline] (P) ct_state include/linux/context_tracking_state.h:137 [inline] (P) schedule_debug kernel/sched/core.c:5983 [inline] (P) schedule+0x0/0x230 kernel/sched/core.c:6682 (P) exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_interrupt+0xcc/0x1d4 arch/arm64/kernel/entry-common.c:856 __el0_irq_handler_common+0x18/0x24 arch/arm64/kernel/entry-common.c:861 el0t_64_irq_handler+0x10/0x1c arch/arm64/kernel/entry-common.c:866 el0t_64_irq+0x198/0x19c arch/arm64/kernel/entry.S:601 Code: 979282cb f94002c8 9103011a d343ff48 (38746908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 979282cb bl 0xfffffffffe4a0b2c 4: f94002c8 ldr x8, [x22] 8: 9103011a add x26, x8, #0xc0 c: d343ff48 lsr x8, x26, #3 * 10: 38746908 ldrb w8, [x8, x20] <-- trapping instruction