bisecting fixing commit since 811218eceeaa7618652e1b8d11caeff67ab42072 building syzkaller on 624dad51316f9973e1349b6c71e789737d1e00d9 testing commit 811218eceeaa7618652e1b8d11caeff67ab42072 with gcc (GCC) 8.4.1 20210217 kernel signature: b036fed4adccdcddb89831ee3516526b4a41f86765db96b88d594f238cea91e5 all runs: crashed: WARNING in sta_info_alloc testing current HEAD eb575cd5d7f60241d016fdd13a9e86d962093c9b testing commit eb575cd5d7f60241d016fdd13a9e86d962093c9b with gcc (GCC) 8.4.1 20210217 kernel signature: 8fcae8bb0f492d1954333a9df50b55073f8efc0ca44c0cff51315c8ef43e3794 all runs: crashed: WARNING in sta_info_alloc revisions tested: 2, total time: 24m35.823404544s (build: 17m14.36441844s, test: 6m51.109886342s) the crash still happens on HEAD commit msg: Linux 4.19.195 crash: WARNING in sta_info_alloc wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready WARNING: CPU: 0 PID: 9884 at net/mac80211/ieee80211_i.h:1401 rcu_read_lock include/linux/rcupdate.h:628 [inline] WARNING: CPU: 0 PID: 9884 at net/mac80211/ieee80211_i.h:1401 ieee80211_get_sband net/mac80211/ieee80211_i.h:1398 [inline] WARNING: CPU: 0 PID: 9884 at net/mac80211/ieee80211_i.h:1401 sta_info_alloc+0x1196/0x15b0 net/mac80211/sta_info.c:418 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9884 Comm: syz-executor.5 Not tainted 4.19.195-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:183 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:1401 [inline] RIP: 0010:sta_info_alloc+0x1196/0x15b0 net/mac80211/sta_info.c:418 Code: 0f 85 02 fc ff ff 48 c7 c2 a0 6d f6 88 be 75 02 00 00 48 c7 c7 00 6e f6 88 c6 05 0b a6 76 03 01 e8 a2 07 57 00 e9 de fb ff ff <0f> 0b e8 93 81 20 fa 85 c0 74 09 80 3d ee a5 76 03 00 74 2f e8 71 RSP: 0018:ffff8880af1a7458 EFLAGS: 00010246 RAX: 0000000000000001 RBX: ffff88809768e2c0 RCX: ffffed1012faa9d8 RDX: 1ffffffff1322499 RSI: 0000000000000000 RDI: 0000000000000286 RBP: ffff8880af1a74b0 R08: 1ffff11012faa9d8 R09: ffffed1017444552 R10: ffffed1017444552 R11: ffff8880ba222a93 R12: 0000000000000000 R13: ffff88809d321ba0 R14: dffffc0000000000 R15: ffff88809768e848 ieee80211_add_station+0x1fe/0x500 net/mac80211/cfg.c:1435 rdev_add_station net/wireless/rdev-ops.h:176 [inline] nl80211_new_station+0x8db/0x15a0 net/wireless/nl80211.c:5602 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:2457 genl_rcv+0x23/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x443/0x660 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x667/0xc60 net/netlink/af_netlink.c:1911 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 Bluetooth: hci0: command 0x0419 tx timeout Bluetooth: hci3: command 0x0419 tx timeout __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: 0033:0x465b09 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:00007f80a5111188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465b09 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004 RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007fffa01028ff R14: 00007f80a5111300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..