netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 Unable to handle kernel paging request at virtual address dfff80000000000e KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] 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 [dfff80000000000e] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6102 Comm: syz-executor427 Not tainted 6.7.0-rc5-syzkaller-gd5b235ec8eab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_segment+0x20f0/0x3394 net/core/skbuff.c:4551 lr : skb_segment+0x20e4/0x3394 net/core/skbuff.c:4551 sp : ffff800096f16dc0 x29: ffff800096f17000 x28: dfff800000000000 x27: 0000000000000001 x26: 0000000000000046 x25: 0000000000000000 x24: 0000000000000002 x23: 000000000000003e x22: 0000000000000000 x21: 0000000000010046 x20: 000000000000ffff x19: 0000000000000070 x18: ffff800096f16a80 x17: 000000000000e9c8 x16: ffff80008051ebec x15: 0000000000000001 x14: 0000000000000000 x13: 000000000000a888 x12: ffff0000d2725a00 x11: ffff0000dbb1d500 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 000000000000000e x7 : ffff80008395db2c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0000d2725a00 x1 : 000000000000ffff x0 : 000000000000ffff Call trace: skb_segment+0x20f0/0x3394 net/core/skbuff.c:4551 udp6_ufo_fragment+0x768/0xc4c net/ipv6/udp_offload.c:109 ipv6_gso_segment+0x5cc/0x1760 net/ipv6/ip6_offload.c:120 skb_mac_gso_segment+0x2d0/0x5bc net/core/gso.c:53 __skb_gso_segment+0x250/0x3cc net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0x3cc/0xd10 net/core/dev.c:3626 __dev_queue_xmit+0x10e8/0x31d8 net/core/dev.c:4338 dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x6c/0x318 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x3784/0x4ca8 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x3bc/0x540 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2198 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: 97d55317 f940cbe8 9101c113 d343fe68 (38fc6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97d55317 bl 0xffffffffff554c5c 4: f940cbe8 ldr x8, [sp, #400] 8: 9101c113 add x19, x8, #0x70 c: d343fe68 lsr x8, x19, #3 * 10: 38fc6908 ldrsb w8, [x8, x28] <-- trapping instruction