Unable to handle kernel paging request at virtual address dfff80000000000c KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] 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 [dfff80000000000c] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 1 UID: 100 PID: 6200 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : dummy_queue+0x16c/0x748 drivers/usb/gadget/udc/dummy_hcd.c:737 lr : gadget_to_dummy_hcd drivers/usb/gadget/udc/dummy_hcd.c:318 [inline] lr : dummy_queue+0x138/0x748 drivers/usb/gadget/udc/dummy_hcd.c:736 sp : ffff8000973a6ed0 x29: ffff8000973a6f00 x28: ffff0000d5d88500 x27: 1fffe000191c401b x26: ffff0000c8e20c00 x25: dfff800000000000 x24: ffff0000c8e200d8 x23: dfff800000000000 x22: 1fffe0001abb10a0 x21: 0000000000000060 x20: ffff0000c8e200e0 x19: ffff0000d5d88510 x18: 0000000000000000 x17: 0000000000020010 x16: 0024000800000000 x15: 0000000000000000 x14: 00000000868e5610 x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a590e28 x10: 0000000000000203 x9 : 00000000000006a8 x8 : 000000000000000c x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000835b961c x2 : 0000000000000003 x1 : ffff0000cd558000 x0 : 0000000000000000 Call trace: dummy_queue+0x16c/0x748 drivers/usb/gadget/udc/dummy_hcd.c:737 (P) usb_ep_queue+0xe4/0x578 drivers/usb/gadget/udc/core.c:305 eth_start_xmit+0x78c/0xe14 drivers/usb/gadget/function/u_ether.c:579 __netdev_start_xmit include/linux/netdevice.h:5400 [inline] netdev_start_xmit include/linux/netdevice.h:5409 [inline] xmit_one net/core/dev.c:3889 [inline] dev_hard_start_xmit+0x1dc/0x9d4 net/core/dev.c:3905 sch_direct_xmit+0x1ac/0x3b0 net/sched/sch_generic.c:372 __dev_xmit_skb net/core/dev.c:4214 [inline] __dev_queue_xmit+0x1130/0x2bc0 net/core/dev.c:4836 dev_queue_xmit include/linux/netdevice.h:3446 [inline] packet_xmit+0x6c/0x314 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3082 [inline] packet_sendmsg+0x319c/0x4110 net/packet/af_packet.c:3114 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg+0xc8/0x17c net/socket.c:790 sock_write_iter+0x220/0x310 net/socket.c:1241 do_iter_readv_writev+0x48c/0x6f8 fs/read_write.c:-1 vfs_writev+0x2a8/0x630 fs/read_write.c:1058 do_writev+0x134/0x2a8 fs/read_write.c:1104 __do_sys_writev fs/read_write.c:1172 [inline] __se_sys_writev fs/read_write.c:1169 [inline] __arm64_sys_writev+0x80/0x94 fs/read_write.c:1169 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x19c/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 Code: 97578ce0 f94002a8 91018115 d343fea8 (38f96908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97578ce0 bl 0xfffffffffd5e3380 4: f94002a8 ldr x8, [x21] 8: 91018115 add x21, x8, #0x60 c: d343fea8 lsr x8, x21, #3 * 10: 38f96908 ldrsb w8, [x8, x25] <-- trapping instruction