Unable to handle kernel paging request at virtual address dfff800000000000 KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000000] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 26929 Comm: syz-executor.1 Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : nla_get_u8 include/net/netlink.h:1658 [inline] pc : nl802154_trigger_scan+0x150/0xbd0 net/ieee802154/nl802154.c:1415 lr : nl802154_trigger_scan+0xb4/0xbd0 net/ieee802154/nl802154.c:1410 sp : ffff80001e617210 x29: ffff80001e617220 x28: ffff700003cc2e58 x27: ffff0000cdd60c90 x26: 1ffff00003cc2e7e x25: dfff800000000000 x24: ffff0001593e8c00 x23: ffff80001e6173d0 x22: ffff80001e6173f0 x21: 0000000000000000 x20: ffff0000cdd56000 x19: 0000000000000004 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800008511520 x15: 0000000000000000 x14: 1ffff00002b9c0b2 x13: dfff800000000000 x12: 0000000000040000 x11: ff808000120915c0 x10: 0000000000000002 x9 : ffff00013d700000 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff80000adce07c x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: nla_get_u8 include/net/netlink.h:1658 [inline] nl802154_trigger_scan+0x150/0xbd0 net/ieee802154/nl802154.c:1415 genl_family_rcv_msg_doit net/netlink/genetlink.c:968 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline] genl_rcv_msg+0x938/0xc1c net/netlink/genetlink.c:1065 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2574 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:722 [inline] sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x568/0x81c net/socket.c:2504 ___sys_sendmsg net/socket.c:2558 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2587 __do_sys_sendmsg net/socket.c:2596 [inline] __se_sys_sendmsg net/socket.c:2594 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2594 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: 977a6905 f9400268 91001113 d343fe68 (38f96908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 977a6905 bl 0xfffffffffde9a414 4: f9400268 ldr x8, [x19] 8: 91001113 add x19, x8, #0x4 c: d343fe68 lsr x8, x19, #3 * 10: 38f96908 ldrsb w8, [x8, x25] <-- trapping instruction