From: Takashi Iwai Date: Tue, 2 Jun 2009 06:40:51 +0000 (+0200) Subject: ALSA: ctxfi - Fix Oops at mmapping X-Git-Tag: v2.6.31-rc1~363^2~23^2~20^2~6 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a4259bf89d23bfd58d87e275ef6da29cea6b3c5;p=pandora-kernel.git ALSA: ctxfi - Fix Oops at mmapping Replace a spinlock with a mutex protecting the vm block list at mmap / munmap calls, which caused Oops like below: BUG: sleeping function called from invalid context at mm/slub.c:1599 in_atomic(): 0, irqs_disabled(): 1, pid: 32065, name: xine Pid: 32065, comm: xine Tainted: P 2.6.29.4-75.fc10.x86_64 #1 Call Trace: [] __might_sleep+0x105/0x10a [] kmem_cache_alloc+0x32/0xe2 [] ct_vm_map+0xfa/0x19e [snd_ctxfi] [] ct_map_audio_buffer+0x4c/0x76 [snd_ctxfi] [] atc_pcm_playback_prepare+0x1d7/0x2a8 [snd_ctxfi] [] ? up_read+0x9/0xb [] ? __up_read+0x7c/0x87 [] ct_pcm_playback_prepare+0x39/0x60 [snd_ctxfi] [] snd_pcm_do_prepare+0x16/0x28 [snd_pcm] [] snd_pcm_action_single+0x2d/0x5b [snd_pcm] [] snd_pcm_action_nonatomic+0x52/0x6a [snd_pcm] [] snd_pcm_common_ioctl1+0x404/0xc79 [snd_pcm] [] ? alloc_pages_current+0xb9/0xc2 [] ? new_slab+0x1a5/0x1cb [] ? vma_prio_tree_insert+0x23/0xc1 [] snd_pcm_playback_ioctl1+0x213/0x230 [snd_pcm] [] ? mmap_region+0x397/0x4c9 [] snd_pcm_playback_ioctl+0x2e/0x36 [snd_pcm] [] vfs_ioctl+0x2a/0x78 [] do_vfs_ioctl+0x462/0x4a2 [] ? default_spin_lock_flags+0x9/0xe [] ? trace_hardirqs_off_thunk+0x3a/0x6c [] sys_ioctl+0x55/0x77 [] system_call_fastpath+0x16/0x1b Signed-off-by: Takashi Iwai --- Reading git-diff-tree failed