Messages in this thread | | | From | Johannes Weiner <> | Subject | lockdep splat from fbmem | Date | Thu, 23 Oct 2008 05:23:38 +0200 |
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Hi,
fb_mmap() is called under mmap_sem and acquires fb_info->lock.
Since 3e680aae4e53ab "fb: convert lock/unlock_kernel() into local fb mutex", fb_ioctl() takes fb_info->lock and does copy_to/from_user() under it, which in turn might acquire mmap_sem.
Just noticed the trace and wanted to let you know.
Hannes
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