9582d5bdef
Fix the following kernel warning adding an adhoc interface to a mt7663e device [ 233.363394] WARNING: CPU: 0 PID: 2345 at drivers/net/wireless/mt76/mt7615/mcu.c:1449 mt7615_mcu_uni_add_bss+0x15f/0x24e [mt7615_common] [ 233.363432] CPU: 0 PID: 2345 Comm: iw Tainted: G W 4.14.171 #12 [ 233.363434] Hardware name: HP Meep/Meep, BIOS Google_Meep.11297.75.0 06/17/2019 [ 233.363436] task: ffff9a1a4020e3c0 task.stack: ffffb9124113c000 [ 233.363441] RIP: 0010:mt7615_mcu_uni_add_bss+0x15f/0x24e [mt7615_common] [ 233.363443] RSP: 0018:ffffb9124113f730 EFLAGS: 00010246 [ 233.363446] RAX: 0000000000000024 RBX: ffff9a1a788c74e8 RCX: 41826d413aea9200 [ 233.363448] RDX: 0000000000000007 RSI: 0000000000000006 RDI: ffff9a1a7fc15418 [ 233.363450] RBP: ffffb9124113f7c0 R08: 0000000000000356 R09: 00000000ffff0a10 [ 233.363452] R10: 0000001000000000 R11: ffffffff93f2a4be R12: 0000000000000000 [ 233.363454] R13: ffff9a1a7383bd48 R14: ffffb9124113f77a R15: 0000000000000000 [ 233.363456] FS: 00007f203314ab80(0000) GS:ffff9a1a7fc00000(0000) knlGS:0000000000000000 [ 233.363458] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 233.363460] CR2: 00005a13d647c950 CR3: 0000000171238000 CR4: 00000000003406f0 [ 233.363462] Call Trace: [ 233.363470] mt7615_bss_info_changed+0x98/0xf4 [mt7615_common] [ 233.363484] ieee80211_bss_info_change_notify+0x139/0x1d4 [mt76_mac80211] [ 233.363496] ieee80211_ibss_disconnect+0x183/0x1bb [mt76_mac80211] [ 233.363507] ieee80211_ibss_leave+0x14/0xa0 [mt76_mac80211] [ 233.363519] __cfg80211_leave_ibss+0xa6/0x13a [cfg80211] [ 233.363528] cfg80211_netdev_notifier_call+0x8b/0x631 [cfg80211] [ 233.363535] ? packet_notifier+0x196/0x1a3 [ 233.363540] raw_notifier_call_chain+0x39/0x58 [ 233.363544] __dev_close_many+0x6b/0xf0 [ 233.363548] dev_close_many+0x62/0xe8 [ 233.363552] ? _raw_spin_unlock_irq+0xe/0x21 [ 233.363555] rollback_registered_many+0xf6/0x35c [ 233.363560] ? __rcu_read_unlock+0x4a/0x4a [ 233.363563] unregister_netdevice_queue+0x7f/0x105 [ 233.363573] ieee80211_del_iface+0x12/0x16 [mt76_mac80211] [ 233.363582] nl80211_del_interface+0xa8/0x124 [cfg80211] [ 233.363588] genl_rcv_msg+0x40b/0x481 [ 233.363592] ? genl_unbind+0xb8/0xb8 [ 233.363595] netlink_rcv_skb+0x85/0xf8 [ 233.363598] genl_rcv+0x28/0x36 [ 233.363601] netlink_unicast+0x165/0x1f8 [ 233.363604] netlink_sendmsg+0x35f/0x3a6 [ 233.363608] sock_sendmsg+0x38/0x48 [ 233.363611] ___sys_sendmsg+0x1bf/0x267 [ 233.363615] ? __inode_wait_for_writeback+0x72/0xd7 [ 233.363619] ? dentry_kill+0x69/0x76 [ 233.363622] ? dput+0xd1/0x170 [ 233.363624] __sys_sendmsg+0x52/0x8f [ 233.363628] do_syscall_64+0x6b/0xf7 [ 233.363632] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 233.363635] RIP: 0033:0x7f2032ca1264 [ 233.363637] RSP: 002b:00007ffec3668e38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 233.363639] RAX: ffffffffffffffda RBX: 000058f7175e7880 RCX: 00007f2032ca1264 [ 233.363641] RDX: 0000000000000000 RSI: 00007ffec3668e98 RDI: 0000000000000003 [ 233.363643] RBP: 00007ffec3668e70 R08: 0000000000000001 R09: 00007f2032ce1fd0 [ 233.363645] R10: 000058f7175e2010 R11: 0000000000000246 R12: 000058f7175e7740 [ 233.363646] R13: 00007ffec3668ff0 R14: 000058f7175e2350 R15: 00007ffec3668e98 Fixes: f40ac0f3d3c0 ("mt76: mt7615: introduce mt7663e support") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.