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Date: Fri, 5 Sep 2008 13:36:06 +0800 From: <sasin@...omon-systech.com> To: <drzeus-list@...eus.cx>, <akpm@...ux-foundation.org> Cc: <linux-kernel@...r.kernel.org> Subject: RE: mmc/card/block.c : mmc_blk_open readonly mount bug? Guess nobody tests with readonly? We had a socket on our board that flipped the write protect signal, and the rest you know :-) -----Original Message----- From: Pierre Ossman [mailto:drzeus-list@...eus.cx] Sent: Friday, September 05, 2008 1:07 PM To: Andrew Morton Cc: Sasi Nair; linux-kernel@...r.kernel.org Subject: Re: mmc/card/block.c : mmc_blk_open readonly mount bug? On Thu, 4 Sep 2008 16:08:08 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote: > From: Andrew Morton <akpm@...ux-foundation.org> > > mmc_block_open() increments md->usage although it returns with -EROFS when > default mounting a MMC/SD card with write protect switch on. This > reference counting bug prevents /dev/mmcblkX from being released on card > removal, and situation worsen with reinsertion until the minor number > range runs out. > > Reported-by: <sasin@...omon-systech.com> > Cc: Pierre Ossman <drzeus-list@...eus.cx> > Cc: <stable@...nel.org> [2.6.25.x, 2.6.26.x] > Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> > --- I wonder how that bug has been able to go unnoticed for so long... Acked-by: Pierre Ossman <drzeus@...eus.cx> -- -- Pierre Ossman Linux kernel, MMC maintainer http://www.kernel.org rdesktop, core developer http://www.rdesktop.org WARNING: This correspondence is being monitored by the Swedish government. Make sure your server uses encryption for SMTP traffic and consider using PGP for end-to-end encryption. -- 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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