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: 1 UID: 0 PID: 7819 Comm: syz.4.237 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 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 : ffff80009d776720 x29: ffff80009d776740 x28: 1fffe0001ab54886 x27: 1fffe0001ab54884 x26: 00000000000000c0 x25: ffff0000d5aa4437 x24: 0000000000000201 x23: 0000000000000003 x22: ffff0000d5aa4420 x21: 0000000000000001 x20: dfff800000000000 x19: 0000000000000000 x18: 0000000000000000 x17: ffff8000807d496c x16: ffff80008051c10c x15: 0000000000000002 x14: 1ffff00013aeed28 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 0000000000ff0100 x9 : 0000000000000002 x8 : 0000000000000018 x7 : ffff80009d776ad0 x6 : 0000000000000003 x5 : ffff80009d776ad0 x4 : ffff80009d776ac0 x3 : 0000000000000003 x2 : 0000000000000001 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_input+0x74/0x94 net/ipv6/route.c:2323 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x258/0x45c net/ipv6/fib6_rules.c:125 ip6_route_input_lookup net/ipv6/route.c:2335 [inline] ip6_route_input+0x5d0/0x8d4 net/ipv6/route.c:2631 ip6_rcv_finish_core+0x218/0x3c8 net/ipv6/ip6_input.c:66 ip6_list_rcv_finish net/ipv6/ip6_input.c:130 [inline] ip6_sublist_rcv+0x5c4/0xf08 net/ipv6/ip6_input.c:319 ipv6_list_rcv+0x37c/0x3d0 net/ipv6/ip6_input.c:353 __netif_receive_skb_list_ptype net/core/dev.c:5930 [inline] __netif_receive_skb_list_core+0x4e4/0x67c net/core/dev.c:5977 __netif_receive_skb_list net/core/dev.c:6029 [inline] netif_receive_skb_list_internal+0x74c/0x9e0 net/core/dev.c:6120 netif_receive_skb_list+0x64/0x5a4 net/core/dev.c:6172 xdp_recv_frames net/bpf/test_run.c:280 [inline] xdp_test_run_batch net/bpf/test_run.c:361 [inline] bpf_test_run_xdp_live+0x138c/0x1694 net/bpf/test_run.c:390 bpf_prog_test_run_xdp+0x534/0xce8 net/bpf/test_run.c:1316 bpf_prog_test_run+0x294/0x33c kernel/bpf/syscall.c:4427 __sys_bpf+0x4b0/0x614 kernel/bpf/syscall.c:5852 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline] __se_sys_bpf kernel/bpf/syscall.c:5939 [inline] __arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:5939 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: 97978776 f94002c8 9103011a d343ff48 (38746908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97978776 bl 0xfffffffffe5e1dd8 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