================================================================================
UBSAN: Undefined behaviour in net/mac80211/cfg.c:491:9
index 255 is out of range for type 'ieee80211_key *[6]'
CPU: 0 PID: 27208 Comm: syz-executor.0 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:00007feec8225c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002b140 RCX: 000000000045de59
RDX: 0000000000000000 RSI: 0000000020001100 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffef9c25c2f R14: 00007feec82269c0 R15: 000000000118bf2c
================================================================================
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
x_tables: duplicate underflow at hook 2
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
ptrace attach of "/root/syz-executor.2"[27503] was attempted by "/root/syz-executor.2"[27504]
ptrace attach of "/root/syz-executor.2"[27513] was attempted by "/root/syz-executor.2"[27515]
ptrace attach of "/root/syz-executor.2"[27529] was attempted by "/root/syz-executor.2"[27530]
audit: type=1107 audit(1602529405.586:98): pid=27616 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='G'
netlink: 76 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 76 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 76 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 76 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 76 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 76 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'.