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Message-ID: <20140901224224.GA3885@linux-g29b.site> Date: Mon, 1 Sep 2014 23:42:24 +0100 From: "Carlos R. Mafra" <crmafra@...il.com> To: LKML <linux-kernel@...r.kernel.org> Cc: Johannes Berg <johannes@...solutions.net>, "John W. Linville" <linville@...driver.com>, linux-wireless@...r.kernel.org Subject: [3.17-rc3] Warning in ieee80211_can_queue_work I am using the kernel 3.17-rc3 which I compiled today and I get the warning below right before suspending to RAM: [ 37.856537] ------------[ cut here ]------------ [ 37.856559] WARNING: CPU: 3 PID: 43 at /home/mafra/linux-2.6/net/mac80211/util.c:716 ieee80211_can_queue_work.isra.38+0x2d/0x40 [mac80211]() [ 37.856559] queueing ieee80211 work while going to suspend [ 37.856575] Modules linked in: ctr ccm nls_iso8859_1 nls_cp437 vfat fat arc4 b43 mac80211 snd_hda_codec_hdmi snd_hda_codec_cirrus snd_hda_codec_generic snd_hda_intel snd_hda_controller cfg80211 snd_hda_codec snd_hwdep x86_pkg_temp_thermal snd_pcm crc32c_intel ghash_clmulni_intel uvcvideo rfkill videobuf2_core bcm5974 ssb videobuf2_vmalloc videobuf2_memops snd_timer rtc_cmos [ 37.856577] CPU: 3 PID: 43 Comm: kworker/3:1 Not tainted 3.17.0-rc3 #44 [ 37.856578] Hardware name: Apple Inc. MacBookPro10,2/Mac-AFD8A9D944EA4843, BIOS MBP102.88Z.0106.B01.1208311637 08/31/2012 [ 37.856583] Workqueue: events led_work_function [ 37.856586] 0000000000000009 ffff88026409fd18 ffffffff816f6176 ffff88026409fd60 [ 37.856587] ffff88026409fd50 ffffffff81067343 ffff880263920660 ffff8802639222f0 [ 37.856589] 0000000000000000 0000000000000000 ffff88026f391300 ffff88026409fdb0 [ 37.856589] Call Trace: [ 37.856594] [<ffffffff816f6176>] dump_stack+0x4d/0x6f [ 37.856598] [<ffffffff81067343>] warn_slowpath_common+0x73/0x90 [ 37.856600] [<ffffffff810673a7>] warn_slowpath_fmt+0x47/0x50 [ 37.856604] [<ffffffff81091abc>] ? put_prev_entity+0x2c/0x3b0 [ 37.856606] [<ffffffff81094957>] ? pick_next_task_fair+0x1f7/0x8a0 [ 37.856615] [<ffffffffa015a75d>] ieee80211_can_queue_work.isra.38+0x2d/0x40 [mac80211] [ 37.856622] [<ffffffffa015a790>] ieee80211_queue_work+0x20/0x40 [mac80211] [ 37.856630] [<ffffffffa01e4947>] b43_led_brightness_set+0x27/0x30 [b43] [ 37.856632] [<ffffffff815d0d93>] led_work_function+0x113/0x130 [ 37.856634] [<ffffffff8107bf46>] process_one_work+0x166/0x390 [ 37.856636] [<ffffffff8107c51b>] worker_thread+0x11b/0x490 [ 37.856638] [<ffffffff8107c400>] ? rescuer_thread+0x290/0x290 [ 37.856641] [<ffffffff81080f1d>] kthread+0xcd/0xf0 [ 37.856643] [<ffffffff81080e50>] ? kthread_create_on_node+0x170/0x170 [ 37.856645] [<ffffffff816fe62c>] ret_from_fork+0x7c/0xb0 [ 37.856647] [<ffffffff81080e50>] ? kthread_create_on_node+0x170/0x170 [ 37.856649] ---[ end trace 01a2610015279813 ]--- The reason for such an early suspend (37 seconds after booting) is related to another issue which I hope to describe in another email but which is "fixed" by a suspend cycle. The wireless seems to be working fine right now though, using the 'b43' module. I'm not sure if the warning is new in 3.17-rcX since I haven't tested the previous releases for a while (sorry), but I can test patches. The kernel config and dmesg are here: http://damtp.cam.ac.uk/user/crm66/dmesg-3.17-rc3.txt http://damtp.cam.ac.uk/user/crm66/config-3.17-rc2+ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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