bisecting fixing commit since 87335852c5d9ec629f80bb2257b9a9945962b719 building syzkaller on 3c7136c000d478908c0d17b38cf6ae8e2e2164c3 testing commit 87335852c5d9ec629f80bb2257b9a9945962b719 with gcc (GCC) 8.4.1 20210217 kernel signature: 448ebd6269964d7ac62b1e123b88967410547f7bbad9acedda97bb26a7a108a3 all runs: crashed: WARNING in cfg80211_connect testing current HEAD 670d6552eda8ff0c5f396d3d6f0174237917c66c testing commit 670d6552eda8ff0c5f396d3d6f0174237917c66c with gcc (GCC) 8.4.1 20210217 kernel signature: fc85c42e3d86cb2d417fe2914e8422f199cde5b398bf5573386f29501a2d46b7 all runs: crashed: WARNING in cfg80211_connect revisions tested: 2, total time: 22m37.209885059s (build: 15m48.576848296s, test: 6m20.83626773s) the crash still happens on HEAD commit msg: Linux 4.14.227 crash: WARNING in cfg80211_connect IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready device veth1_macvtap entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9687 at net/wireless/sme.c:533 wiphy_to_rdev net/wireless/core.h:112 [inline] WARNING: CPU: 1 PID: 9687 at net/wireless/sme.c:533 cfg80211_sme_connect net/wireless/sme.c:518 [inline] WARNING: CPU: 1 PID: 9687 at net/wireless/sme.c:533 cfg80211_connect+0x1801/0x1fa0 net/wireless/sme.c:1141 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9687 Comm: syz-executor.4 Not tainted 4.14.227-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x14b/0x1e7 lib/dump_stack.c:58 panic+0x1b0/0x358 kernel/panic.c:183 __warn.cold.7+0x25/0x25 kernel/panic.c:547 report_bug+0x1a1/0x200 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bd/0x310 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:cfg80211_sme_connect net/wireless/sme.c:533 [inline] RIP: 0010:cfg80211_connect+0x1801/0x1fa0 net/wireless/sme.c:1141 RSP: 0018:ffff88809c48f300 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: ffff888091c41790 RCX: ffff888091c418b8 RDX: 1ffff11012388317 RSI: ffff8880987420e6 RDI: ffffffff886a2878 RBP: ffff88809c48f3f0 R08: ffffed1012388313 R09: ffffed1012388312 R10: ffffed1012388312 R11: ffff888091c41895 R12: ffffffff886a2740 R13: ffff88809c48f4b0 R14: 0000000000000000 R15: ffffffff86c8d0e0 nl80211_connect+0x1334/0x1fc0 net/wireless/nl80211.c:9113 genl_family_rcv_msg+0x57f/0xfe0 net/netlink/genetlink.c:600 genl_rcv_msg+0xa7/0x140 net/netlink/genetlink.c:625 netlink_rcv_skb+0x12f/0x3b0 net/netlink/af_netlink.c:2433 genl_rcv+0x23/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x40b/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x639/0xbe0 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:656 ___sys_sendmsg+0x625/0x920 net/socket.c:2062 __sys_sendmsg+0xc1/0x140 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0xd/0x20 net/socket.c:2103 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465889 RSP: 002b:00007f74d1b1d188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000055bfa8 RCX: 0000000000465889 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00000000004af68d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055bfa8 R13: 00007ffc0b2f5bef R14: 00007f74d1b1d300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..