netlink: 4 bytes leftover after parsing attributes in process `syz-executor264'. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9748 Comm: syz-executor264 Not tainted 5.2.0+ #62 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nla_parse_nested_deprecated /./include/net/netlink.h:1167 [inline] RIP: 0010:tcf_ife_init+0x25c/0x1850 /net/sched/act_ife.c:484 Code: 00 00 48 c7 c7 40 c2 da 88 e8 f0 8c a2 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 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 e2 RSP: 0018:ffff88808badeeb8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101338b9d0 RDX: 0000000000000000 RSI: 1ffff1101338b9d7 RDI: 0000000000000282 RBP: ffff88808badf060 R08: 0000000000000002 R09: ffff888099c5ce88 R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 R13: ffff888215c15b00 R14: ffff88808badf8c0 R15: 0000000000000000 FS: 0000555555624880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 000000008fff8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcf_action_init_1+0x6f2/0xa80 /net/sched/act_api.c:915 tcf_action_init+0x241/0x360 /net/sched/act_api.c:971 tcf_action_add+0xe8/0x370 /net/sched/act_api.c:1356 tc_ctl_action+0x3b5/0x4bc /net/sched/act_api.c:1408 rtnetlink_rcv_msg+0x463/0xb00 /net/core/rtnetlink.c:5223 netlink_rcv_skb+0x177/0x450 /net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1d/0x30 /net/core/rtnetlink.c:5241 netlink_unicast_kernel /net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 /net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 /net/netlink/af_netlink.c:1917 sock_sendmsg_nosec /net/socket.c:633 [inline] sock_sendmsg+0xd7/0x130 /net/socket.c:653 ___sys_sendmsg+0x803/0x920 /net/socket.c:2307 __sys_sendmsg+0x105/0x1d0 /net/socket.c:2352 __do_sys_sendmsg /net/socket.c:2361 [inline] __se_sys_sendmsg /net/socket.c:2359 [inline] __x64_sys_sendmsg+0x78/0xb0 /net/socket.c:2359 do_syscall_64+0xfd/0x6a0 /arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4401d9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffe62d17388 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 4e9f9043a4780fff ]--- RIP: 0010:nla_parse_nested_deprecated /./include/net/netlink.h:1167 [inline] RIP: 0010:tcf_ife_init+0x25c/0x1850 /net/sched/act_ife.c:484 Code: 00 00 48 c7 c7 40 c2 da 88 e8 f0 8c a2 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 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 e2 RSP: 0018:ffff88808badeeb8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101338b9d0 RDX: 0000000000000000 RSI: 1ffff1101338b9d7 RDI: 0000000000000282 RBP: ffff88808badf060 R08: 0000000000000002 R09: ffff888099c5ce88 R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 R13: ffff888215c15b00 R14: ffff88808badf8c0 R15: 0000000000000000 FS: 0000555555624880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 000000008fff8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400