general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 5068 Comm: syz-executor249 Not tainted 6.2.0-syzkaller-12485-gf3a2439f20d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:nla_get_u8 include/net/netlink.h:1658 [inline] RIP: 0010:nl802154_trigger_scan+0x152/0xbd0 net/ieee802154/nl802154.c:1415 Code: 00 00 00 49 03 1f 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 1c 11 71 f7 48 8b 1b 48 83 c3 04 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 6c 07 00 00 0f b6 1b 31 ff 89 de e8 15 RSP: 0018:ffffc90003acf438 EFLAGS: 00010247 RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88801f590000 RDX: ffff88801f590000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 1ffff92000759ec6 R08: ffffffff8a724b72 R09: ffffed10043c28c1 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888021e14c90 R13: ffffc90003acf610 R14: dffffc0000000000 R15: ffffc90003acf630 FS: 0000555556b0e300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f79c14d66a8 CR3: 0000000029ae4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: genl_family_rcv_msg_doit net/netlink/genetlink.c:968 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline] genl_rcv_msg+0xc33/0xf90 net/netlink/genetlink.c:1065 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2574 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:722 [inline] sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2504 ___sys_sendmsg net/socket.c:2558 [inline] __sys_sendmsg+0x2ad/0x390 net/socket.c:2587 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd34b529e69 Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcc59648b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd34b5a2380 RCX: 00007fd34b529e69 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 001d00000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000003 R14: 00007ffcc59648d7 R15: 00007ffcc59648da Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:nla_get_u8 include/net/netlink.h:1658 [inline] RIP: 0010:nl802154_trigger_scan+0x152/0xbd0 net/ieee802154/nl802154.c:1415 Code: 00 00 00 49 03 1f 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 1c 11 71 f7 48 8b 1b 48 83 c3 04 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 6c 07 00 00 0f b6 1b 31 ff 89 de e8 15 RSP: 0018:ffffc90003acf438 EFLAGS: 00010247 RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88801f590000 RDX: ffff88801f590000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 1ffff92000759ec6 R08: ffffffff8a724b72 R09: ffffed10043c28c1 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888021e14c90 R13: ffffc90003acf610 R14: dffffc0000000000 R15: ffffc90003acf630 FS: 0000555556b0e300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f79c14d66a8 CR3: 0000000029ae4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: 49 03 1f add (%r15),%rbx 5: 48 89 d8 mov %rbx,%rax 8: 48 c1 e8 03 shr $0x3,%rax c: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) 11: 74 08 je 0x1b 13: 48 89 df mov %rbx,%rdi 16: e8 1c 11 71 f7 callq 0xf7711137 1b: 48 8b 1b mov (%rbx),%rbx 1e: 48 83 c3 04 add $0x4,%rbx 22: 48 89 d8 mov %rbx,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 6c 07 00 00 jne 0x7a2 36: 0f b6 1b movzbl (%rbx),%ebx 39: 31 ff xor %edi,%edi 3b: 89 de mov %ebx,%esi 3d: e8 .byte 0xe8 3e: 15 .byte 0x15