general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 8438 Comm: syz-executor098 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nla_len include/net/netlink.h:1148 [inline] RIP: 0010:nla_parse_nested_deprecated include/net/netlink.h:1231 [inline] RIP: 0010:hwsim_del_edge_nl+0xf4/0x7c0 drivers/net/ieee802154/mac802154_hwsim.c:487 Code: 00 0f 85 80 06 00 00 4d 85 ed 48 8b 5b 10 0f 84 87 05 00 00 e8 8d e4 4a fc 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 cd RSP: 0018:ffffc9000111f570 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8529f7f3 RDI: ffff888017673d10 RBP: ffffc9000111f678 R08: 0000000000000001 R09: ffffc9000111f6a8 R10: fffff52000223ed6 R11: 0000000000000000 R12: ffffc9000111f698 R13: ffff88802a378014 R14: ffff8880135be780 R15: 0000000000000000 FS: 00000000021dc300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000002abb4000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2337 ___sys_sendmsg+0xf3/0x170 net/socket.c:2391 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2420 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43ef59 Code: 28 c3 e8 2a 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:00007fff0ab80248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ef59 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 0000000000402f40 R08: 0000000000000000 R09: 0000000000400488 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402fd0 R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 Modules linked in: ---[ end trace 70bc8381c1572d71 ]--- RIP: 0010:nla_len include/net/netlink.h:1148 [inline] RIP: 0010:nla_parse_nested_deprecated include/net/netlink.h:1231 [inline] RIP: 0010:hwsim_del_edge_nl+0xf4/0x7c0 drivers/net/ieee802154/mac802154_hwsim.c:487 Code: 00 0f 85 80 06 00 00 4d 85 ed 48 8b 5b 10 0f 84 87 05 00 00 e8 8d e4 4a fc 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 cd RSP: 0018:ffffc9000111f570 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8529f7f3 RDI: ffff888017673d10 RBP: ffffc9000111f678 R08: 0000000000000001 R09: ffffc9000111f6a8 R10: fffff52000223ed6 R11: 0000000000000000 R12: ffffc9000111f698 R13: ffff88802a378014 R14: ffff8880135be780 R15: 0000000000000000 FS: 00000000021dc300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5b4e249000 CR3: 000000002abb4000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400