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Date: Mon, 12 Aug 2013 22:47:12 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: Minchan Kim <minchan@...nel.org> Cc: Thomas Backlund <tmb@...eia.org>, Jordi Pujol <jordipujolp@...il.com>, stable@...r.kernel.org, Jiang Liu <jiang.liu@...wei.com>, linux-kernel@...r.kernel.org Subject: Re: ZRAM 3.10.6 Buffer I/O error On Tue, Aug 13, 2013 at 02:18:29PM +0900, Minchan Kim wrote: > On Tue, Aug 13, 2013 at 08:01:11AM +0300, Thomas Backlund wrote: > > Minchan Kim skrev 13.8.2013 07:33: > > >Hello Greg, > > > > > >On Mon, Aug 12, 2013 at 08:58:02PM -0700, Greg Kroah-Hartman wrote: > > >>On Tue, Aug 13, 2013 at 10:39:00AM +0900, Minchan Kim wrote: > > >>>Hello, > > >>> > > >>>On Mon, Aug 12, 2013 at 07:39:46PM +0300, Thomas Backlund wrote: > > >>>>12.08.2013 17:27, Jordi Pujol skrev: > > >>>>>Hello, > > >>>>> > > >>>>>zram shows an error when mounting a swap partition, > > >>>>>current version Linux kernel 3.10.6, > > >>>>>previous versions worked, I suppose that latest zram patches have some > > >>>>>problem, > > >>>>> > > >>>>>machine is an AMD64 dual core, 4GB RAM > > >>>>> > > >>>>>+ modprobe -qb zram num_devices=2 > > >>>>>+ echo 104857600 > /sys/block/zram0/disksize > > >>>>> > > >>>>># mkswap /dev/zram0 > > >>>>>Setting up swapspace version 1, size = 102396 KiB > > >>>>>no label, UUID=6c249930-2ba0-46cf-a8c6-766481942b7d > > >>>>> > > >>>>># pager /var/log/dmesg > > >>>>>(no more errors shown) > > >>>>> > > >>>>># swapon /dev/zram0 > > >>>>> > > >>>>># pager /var/log/dmesg > > >>>>>... > > >>>>>[ 309.300479] Buffer I/O error on device zram0, logical block 25599 > > >>>>>[ 309.300491] Buffer I/O error on device zram0, logical block 25599 > > >>>>>[ 309.300514] Buffer I/O error on device zram0, logical block 25599 > > >>>>>[ 345.205887] Adding 102396k swap on /dev/zram0. Priority:-2 extents:1 > > >>>>>across:102396k SSFS > > >>>>> > > >>>>>full log files and the kernel source are stored in the address: > > >>>>> > > >>>>>http://livenet.selfip.com/ftp/debian/zram_3.10.6_IO_error/ > > >>>>> > > >>>> > > >>>> > > >>>>I think this one should fix it and belongs in 3.10 stable too: > > >>> > > >>>Very true. Let's Cc Greg, explicitely. > > >> > > >>-ENOCONTEXT > > > > > >https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/staging/zram?id=75c7caf5a052ffd8db3312fa7864ee2d142890c4 > > > > > >It seems you already merge "zram:allow request end to conincide with disksize" to stable. > > >So there is no concern any more. > > > > Nope... > > > > thats master branch wich tracks upstream tree... > > > > it's not in the 3.10 stable as of 3.10.6 (or current stable queue) > > > > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/log/drivers/staging/zram?h=linux-3.10.y > > Okay, Then, we should explain it to Greg. > > While Jiang was fixing a BUG A with [1], [1] made another BUG B. > So, Sergey fixed BUG B with [2]. But unfortunately, [1] was in stable > now but [2] wasn't so [2] should go to the stable to fix BUG B. > > [1] 12a7ad3b8, zram: avoid access beyond the zram device > [2] 75c7caf5a, zram: allow request end to coincide with disksize Ok, but that's what Thomas's original email to stable@...r.kernel.org asked for, to apply the 2nd patch above to the stable tree, which I've already done... Emailing me directly, with half-of-a-thread causes me nothing but confusion, as I'm sure you can imagine. thanks, greg k-h -- 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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