audit: type=1400 audit(1600752379.624:8): avc:  denied  { execmem } for  pid=6489 comm="syz-executor817" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
================================================================================
UBSAN: Undefined behaviour in net/sched/cls_tcindex.c:238:29
shift exponent 44 is too large for 32-bit type 'int'
CPU: 0 PID: 6491 Comm: syz-executor817 Not tainted 4.19.146-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x22c/0x33e lib/dump_stack.c:118
 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
 valid_perfect_hash net/sched/cls_tcindex.c:238 [inline]
 tcindex_set_parms.cold+0x170/0x22f net/sched/cls_tcindex.c:398
 tcindex_change+0x220/0x2f3 net/sched/cls_tcindex.c:518
 tc_new_tfilter+0xb38/0x1570 net/sched/cls_api.c:1320
 rtnetlink_rcv_msg+0x498/0xc10 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x717/0xcc0 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc7/0x130 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8f0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441629
Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdf6c12348 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441629
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 000000000000a1c1 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000020000080 R11: 0000000000000246 R12: 00000000004023d0
R13: 0000000000402460 R14: 0000000000000000 R15: 0000000000000000
================================================================================
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
nla_parse: 830 callbacks suppressed
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'.
------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: work_struct hint: tcindex_destroy_rexts_work+0x0/0x20 include/net/pkt_cls.h:301
WARNING: CPU: 1 PID: 46 at lib/debugobjects.c:325 debug_print_object+0x194/0x2b0 lib/debugobjects.c:325