lkml.org 
[lkml]   [2008]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] ath5k : ath5k_config_interface deadlock fix
Dave Young napsal(a):
> In the drivers/net/wireless/ath5k/base.c, there's recursive locking of sc->lock
> This casue the kernel stuck
>
> Bug report please see:
> http://lkml.org/lkml/2008/7/29/32
>
> Fixed it by remove the lock in sub routine "ath5k_beacon_update",
> The ath5k_config_interface is the only caller to it.
>
> [ 171.430207] =============================================
> [ 171.432140] [ INFO: possible recursive locking detected ]
> [ 171.433113] 2.6.27-rc1-smp #4
> [ 171.434079] ---------------------------------------------
> [ 171.435039] ath5k_pci/2447 is trying to acquire lock:
> [ 171.435990] (&sc->lock){--..}, at: [<f89ee9b5>] ath5k_config_interface+0xd5/0x340 [ath5k]
> [ 171.437046]
> [ 171.437048] but task is already holding lock:
> [ 171.438903] (&sc->lock){--..}, at: [<f89ee91d>] ath5k_config_interface+0x3d/0x340 [ath5k]
> [ 171.439953]
> [ 171.439954] other info that might help us debug this:
> [ 171.441795] 3 locks held by ath5k_pci/2447:
> [ 171.442729] #0: ((name)){--..}, at: [<c013a122>] run_workqueue+0x102/0x1d0
> [ 171.443800] #1: (&(&local->scan_work)->work){--..}, at: [<c013a122>] run_workqueue+0x102/0x1d0
> [ 171.444859] #2: (&sc->lock){--..}, at: [<f89ee91d>] ath5k_config_interface+0x3d/0x340 [ath5k]

Should be fixed already:
http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git;a=commitdiff_plain;h=bc05116ab33d30342e2b4b1bcc6d6e1184e9df97


\
 
 \ /
  Last update: 2008-08-01 10:03    [W:0.211 / U:0.512 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site