bisecting fixing commit since b94de4d19498b454645b72d08a05d32fa9074fb5 building syzkaller on cba33199be220cbf61f7c0c8223d88a25a913d6f testing commit b94de4d19498b454645b72d08a05d32fa9074fb5 with gcc (GCC) 8.4.1 20210217 kernel signature: be4ef0c3f080d424adaa66fdf419a7353fe98ce6bb6382ccb25582ae944071c4 all runs: crashed: WARNING in sta_apply_parameters testing current HEAD 255b58a2b3af0baa0ee11507390349217b8b73b0 testing commit 255b58a2b3af0baa0ee11507390349217b8b73b0 with gcc (GCC) 8.4.1 20210217 kernel signature: 60cefc46fab0e6917e5d7899de5080da7b5d681d180800c507a2a1519a49c464 all runs: crashed: WARNING in sta_apply_parameters revisions tested: 2, total time: 22m15.565204894s (build: 14m44.182717685s, test: 6m38.583305957s) the crash still happens on HEAD commit msg: Linux 4.19.176 crash: WARNING in sta_apply_parameters device wlan0 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready device wlan0 left promiscuous mode device wlan0 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready WARNING: CPU: 0 PID: 9776 at net/mac80211/ieee80211_i.h:1414 sta_apply_mesh_params net/mac80211/cfg.c:1216 [inline] WARNING: CPU: 0 PID: 9776 at net/mac80211/ieee80211_i.h:1414 sta_apply_parameters+0x1062/0x1880 net/mac80211/cfg.c:1393 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9776 Comm: syz-executor.2 Not tainted 4.19.176-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/0x226 lib/dump_stack.c:118 panic+0x1cd/0x375 kernel/panic.c:186 __warn.cold.7+0x1b/0x36 kernel/panic.c:541 report_bug+0x1a1/0x200 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [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_get_sband net/mac80211/ieee80211_i.h:1414 [inline] RIP: 0010:sta_apply_parameters+0x1062/0x1880 net/mac80211/cfg.c:1229 Code: c0 03 38 d0 7c 08 84 d2 0f 85 da 05 00 00 41 8b 76 3c 85 f6 0f 85 e0 00 00 00 44 89 c6 48 89 df e8 93 8f 10 00 e9 b3 f9 ff ff <0f> 0b e8 d7 40 1b fa 85 c0 74 0d 80 3d 2f 82 71 03 00 0f 84 09 01 RSP: 0018:ffff8881c6687440 EFLAGS: 00010246 RAX: 0000000000000001 RBX: ffff8881d1b81a40 RCX: ffffed103af0bd80 RDX: 1ffffffff1322471 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff8881c66874b0 R08: 1ffff1103af0bd80 R09: ffffed103ec84552 R10: ffffed103ec84552 R11: ffff8881f6422a93 R12: 0000000000000000 R13: ffff8881ee279a60 R14: ffff8881c6687560 R15: ffff8881d7b36d00 ieee80211_add_station+0x276/0x500 net/mac80211/cfg.c:1442 rdev_add_station net/wireless/rdev-ops.h:176 [inline] nl80211_new_station+0x8db/0x15a0 net/wireless/nl80211.c:5601 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+0x667/0xc60 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: 0033:0x465889 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9b8c25d188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000055bf00 RCX: 0000000000465889 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 00000000004af68d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055bf00 R13: 00007fff834a5b2f R14: 00007f9b8c25d300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..