bisecting fixing commit since 2c746135a12e3f329171ed168ca0078d468f6d85 building syzkaller on 0d27f508b6b35d3b12b9fafebd40a1f36950c8f3 testing commit 2c746135a12e3f329171ed168ca0078d468f6d85 with gcc (GCC) 8.1.0 kernel signature: 53b7e02eb558a1cffacf1202c72302898d9b908d4b1b26aae657469089d1dd49 all runs: crashed: WARNING in ieee80211_probe_client testing current HEAD 13d2ce42de8cb98ff952f8de6307f896203854c2 testing commit 13d2ce42de8cb98ff952f8de6307f896203854c2 with gcc (GCC) 8.1.0 kernel signature: f91253ce1e9d97cf68e4011179f0c0919a043da7765323e681152ccff3de7be5 all runs: crashed: WARNING in ieee80211_probe_client revisions tested: 2, total time: 23m55.552094835s (build: 17m32.53180684s, test: 5m43.023437704s) the crash still happens on HEAD commit msg: Linux 4.19.163 crash: WARNING in ieee80211_probe_client IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9291 at net/mac80211/cfg.c:3417 ieee80211_probe_client.cold.24+0xc/0x27 net/mac80211/cfg.c:3417 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9291 Comm: syz-executor.3 Not tainted 4.19.163-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+0x17c/0x22a lib/dump_stack.c:118 panic+0x1cd/0x375 kernel/panic.c:186 __warn.cold.7+0x1b/0x3e kernel/panic.c:541 report_bug+0x1a4/0x200 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x200/0x350 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:ieee80211_probe_client.cold.24+0xc/0x27 net/mac80211/cfg.c:3417 Code: 88 17 00 00 48 83 c0 01 48 89 83 88 17 00 00 e9 48 ea ff ff 4c 89 e7 e8 a9 a6 3e fa eb df 48 c7 c7 00 4e f6 88 e8 3b 34 fb f9 <0f> 0b bb ea ff ff ff e9 76 f0 ff ff 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff8881ec2bf4d8 EFLAGS: 00010286 RAX: 0000000000000024 RBX: ffff8881e8f34a00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff885001a0 RDI: ffffffff8bad56e0 RBP: ffff8881ec2bf530 R08: ffffed103eca4e99 R09: ffffed103eca4e98 R10: ffffed103eca4e98 R11: ffff8881f65274c7 R12: ffff8881cf951aa0 R13: ffff8881ef2f2ce0 R14: 0000000000000000 R15: ffff8881ef202680 rdev_probe_client net/wireless/rdev-ops.h:909 [inline] nl80211_probe_client+0x340/0xa60 net/wireless/nl80211.c:11600 genl_family_rcv_msg+0x599/0x1000 net/netlink/genetlink.c:602 genl_rcv_msg+0xa7/0x140 net/netlink/genetlink.c:627 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 genl_rcv+0x23/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x660 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x666/0xc50 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:632 ___sys_sendmsg+0x647/0x950 net/socket.c:2115 __sys_sendmsg+0xd9/0x180 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45deb9 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:00007f2b576a5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002bbc0 RCX: 000000000045deb9 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 000000000118c158 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118c124 R13: 00007ffc0043b69f R14: 00007f2b576a69c0 R15: 000000000118c124 Kernel Offset: disabled Rebooting in 86400 seconds..