netlink: 32 bytes leftover after parsing attributes in process `syz-executor809'.
netlink: 32 bytes leftover after parsing attributes in process `syz-executor809'.
netlink: 32 bytes leftover after parsing attributes in process `syz-executor809'.
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
Modules linked in:
CPU: 1 PID: 6370 Comm: syz-executor809 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880972e0480 task.stack: ffff888097a18000
RIP: 0010:__tcf_idr_release+0x17d/0x260 net/sched/act_api.c:100
RSP: 0018:ffff888097a1f4f0 EFLAGS: 00010297
RAX: ffff8880972e0480 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88808f8bf7a0
RBP: ffff88808f8bf7a0 R08: ffffffff8a096f08 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880972e0480 R12: e801000000beffff
R13: 00000000850ca675 R14: ffffffff81856373 R15: 0000000000000000
FS:  00007f7675640700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc21661dac CR3: 000000009b735000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tcf_action_destroy+0xed/0x170 net/sched/act_api.c:527
 tcf_action_init+0x294/0x400 net/sched/act_api.c:769
 tcf_action_add net/sched/act_api.c:1079 [inline]
 tc_ctl_action+0x2e3/0x50f net/sched/act_api.c:1131
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x446c19
RSP: 002b:00007f767563fd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446c19
RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003
RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c
R13: 0001008400000000 R14: 0000000000e60000 R15: 053b003000000098
Code: 49 8d 7c 24 48 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c7 00 00 00 4d 8b 64 24 48 4d 85 e4 74 0e e8 39 4e 38 fc 0f b6 f3 48 89 ef <41> ff d4 e8 2b 4e 38 fc 48 8d 7d 20 48 b8 00 00 00 00 00 fc ff 
RIP: __tcf_idr_release+0x17d/0x260 net/sched/act_api.c:100 RSP: ffff888097a1f4f0
---[ end trace 4816c45cc30af74c ]---