On 22:13 Tue 14 Dec 2010, Torsten Kaiser wrote: > On Tue, Dec 14, 2010 at 9:56 PM, Torsten Kaiser > <just.for.lkml@xxxxxxxxxxxxxx> wrote: > > Using the card also still works, but I think I found out what was > > causing sporadic shutdown problems with 37-rc kernels: When I try to > > exit tvtime it gets stuck in an uninterruptible D state and can't be > > killed. And that seems to mess up the shutdown. > > > > But this happens independent with or without your patch and looks like > > different problem. > > > > SysRQ+W provided this stack trace, maybe someone seens an obvious bug...: > > [ 274.772528] ffff8800dec69680 0000000000000086 ffffffff81089d73 > > ffff8800729d05a0 > > [ 274.778599] 0000000000011480 ffff8800df923fd8 0000000000011480 > > ffff8800df922000 > > [ 274.778599] ffff8800df923fd8 0000000000011480 ffff8800dec69680 > > 0000000000011480 > > [ 274.778599] Call Trace: > > [ 274.778599] [<ffffffff81089d73>] ? free_pcppages_bulk+0x343/0x3b0 > > [ 274.778599] [<ffffffff8156d0e1>] ? __mutex_lock_slowpath+0xe1/0x160 > > [ 274.778599] [<ffffffff8156cd8a>] ? mutex_lock+0x1a/0x40 > > [ 274.778599] [<ffffffff8141ab7f>] ? free_btres_lock.clone.19+0x3f/0x100 > > [ 274.778599] [<ffffffff8141d311>] ? bttv_release+0x1c1/0x1e0 > > [ 274.778599] [<ffffffff813fe4ba>] ? v4l2_release+0x4a/0x70 > > [ 274.778599] [<ffffffff810c5291>] ? fput+0xe1/0x250 > > [ 274.778599] [<ffffffff810c1d59>] ? filp_close+0x59/0x80 > > [ 274.778599] [<ffffffff810c1e0b>] ? sys_close+0x8b/0xe0 > > [ 274.778599] [<ffffffff8100253b>] ? system_call_fastpath+0x16/0x1b > > The calls to lock btv->lock in bttv_release() where added as part of > the BKL removal, but I do not understand enough to fix this. > Can this be dropped from bttv_release() completely, or would an > unlocked version of free_btres_lock() be better? I would create an unlocked version of free_btres_lock. Does that fix the issue? Cheers, Brandon -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
