================================================================================
UBSAN: Undefined behaviour in net/mac80211/cfg.c:491:9
index 255 is out of range for type 'ieee80211_key *[6]'
CPU: 0 PID: 13937 Comm: syz-executor.2 Not tainted 4.19.150-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_out_of_bounds.cold+0x63/0x6f lib/ubsan.c:383
 ieee80211_del_key+0x48a/0x490 net/mac80211/cfg.c:491
 rdev_del_key net/wireless/rdev-ops.h:106 [inline]
 nl80211_del_key+0x41e/0xc50 net/wireless/nl80211.c:3650
 genl_family_rcv_msg+0x6bf/0xd50 net/netlink/genetlink.c:602
 genl_rcv_msg+0xdf/0x1b0 net/netlink/genetlink.c:627
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638
 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: 0033:0x45de59
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f95ad305c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002b140 RCX: 000000000045de59
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007fff675dc47f R14: 00007f95ad3069c0 R15: 000000000118bf2c
================================================================================
FAT-fs (loop5): bogus number of reserved sectors
FAT-fs (loop5): Can't find a valid FAT filesystem
atomic_op 000000000ccdb720 conn xmit_atomic           (null)
netlink: 'syz-executor.5': attribute type 3 has an invalid length.
atomic_op 000000005a760a78 conn xmit_atomic           (null)
netlink: 'syz-executor.5': attribute type 3 has an invalid length.
UDF-fs: warning (device loop5): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: warning (device loop5): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: warning (device loop5): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 2048 failed
UDF-fs: warning (device loop5): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 4096 failed
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
kauditd_printk_skb: 1 callbacks suppressed
audit: type=1326 audit(1602414907.834:90): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=14630 comm="syz-executor.5" exe="/root/syz-executor.5" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0