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: 6509 Comm: kworker/0:4 Not tainted 6.15.0-rc4-syzkaller-ge0f4c8dd9d2d #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: mld mld_ifc_work pstate: 80400005 (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 : ffff8000a3dc6500 x29: ffff8000a3dc6520 x28: 1fffe0001a482f26 x27: 1fffe0001a482f24 x26: 00000000000000c0 x25: ffff0000d2417937 x24: 0000000000000201 x23: 0000000000000002 x22: ffff0000d2417920 x21: 0000000000000000 x20: dfff800000000000 x19: 0000000000000000 x18: 1fffe0003670d276 x17: 0000000000000000 x16: ffff800080512f80 x15: 0000000000000002 x14: 1ffff000147b8ce4 x13: 0000000000000000 x12: 0000000000000000 x11: ffff7000147b8ce6 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000018 x7 : ffff8000a3dc68b0 x6 : 0000000000000002 x5 : ffff8000a3dc68b0 x4 : ffff8000a3dc68a0 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:1515 __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:2230 ip6_pol_route+0x1f8/0x1014 net/ipv6/route.c:2266 ip6_pol_route_output+0x60/0x94 net/ipv6/route.c:2641 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x258/0x45c net/ipv6/fib6_rules.c:125 ip6_route_output_flags_noref net/ipv6/route.c:2674 [inline] ip6_route_output_flags+0x2e4/0x578 net/ipv6/route.c:2686 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:5203 [inline] netdev_start_xmit include/linux/netdevice.h:5212 [inline] xmit_one net/core/dev.c:3776 [inline] dev_hard_start_xmit+0x2b0/0x8ac net/core/dev.c:3792 __dev_queue_xmit+0x15a4/0x31f0 net/core/dev.c:4629 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+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:303 [inline] ip6_output+0x274/0x504 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:459 [inline] NF_HOOK+0x15c/0x430 include/linux/netfilter.h:314 mld_sendpack+0x764/0xf50 net/ipv6/mcast.c:1868 mld_send_cr net/ipv6/mcast.c:2169 [inline] mld_ifc_work+0x770/0xce8 net/ipv6/mcast.c:2702 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Code: 9797ebfa f94002c8 9103011a d343ff48 (38746908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 9797ebfa bl 0xfffffffffe5fafe8 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