diff --git a/PKGBUILD b/PKGBUILD index 976764c..65b73bc 100644 --- a/PKGBUILD +++ b/PKGBUILD @@ -5,7 +5,7 @@ pkgbase=linux # Build stock -ARCH kernel #pkgbase=linux-custom # Build kernel with a different name _srcname=linux-4.0 pkgver=4.0.4 -pkgrel=1 +pkgrel=2 arch=('i686' 'x86_64') url="http://www.kernel.org/" license=('GPL2') @@ -19,6 +19,7 @@ source=("https://www.kernel.org/pub/linux/kernel/v4.x/${_srcname}.tar.xz" 'config' 'config.x86_64' # standard config files for mkinitcpio ramdisk 'linux.preset' + 'md-raid0-fix-restore-to-sector-variable-in-raid0_mak.patch' 'change-default-console-loglevel.patch') sha256sums=('0f2f7d44979bc8f71c4fc5d3308c03499c26a824dd311fdf6eef4dee0d7d5991' 'SKIP' @@ -27,6 +28,7 @@ sha256sums=('0f2f7d44979bc8f71c4fc5d3308c03499c26a824dd311fdf6eef4dee0d7d5991' 'e8d639582697f22333a96aa1614bcf5d9bcf2e6683a3d5296f9cfc64843606f1' '5dadd75693e512b77f87f5620e470405b943373613eaf4df561037e9296453be' 'f0d90e756f14533ee67afda280500511a62465b4f76adcc5effa95a40045179c' + 'bc83293e64653d60793708a0e277741f57c018f5ea3551a8aff3a220df917ceb' '1256b241cd477b265a3c2d64bdc19ffe3c9bbcee82ea3994c590c2c76e767d99') validpgpkeys=( 'ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linus Torvalds @@ -43,7 +45,10 @@ prepare() { # add latest fixes from stable queue, if needed # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git - + + # https://bugzilla.kernel.org/show_bug.cgi?id=98501 + patch -Np1 -i "${srcdir}/md-raid0-fix-restore-to-sector-variable-in-raid0_mak.patch" + # set DEFAULT_CONSOLE_LOGLEVEL to 4 (same value as the 'quiet' kernel param) # remove this when a Kconfig knob is made available by upstream # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227) diff --git a/md-raid0-fix-restore-to-sector-variable-in-raid0_mak.patch b/md-raid0-fix-restore-to-sector-variable-in-raid0_mak.patch new file mode 100644 index 0000000..9f09102 --- /dev/null +++ b/md-raid0-fix-restore-to-sector-variable-in-raid0_mak.patch @@ -0,0 +1,50 @@ +From a81157768a00e8cf8a7b43b5ea5cac931262374f Mon Sep 17 00:00:00 2001 +From: Eric Work +Date: Mon, 18 May 2015 23:26:23 -0700 +Subject: [PATCH] md/raid0: fix restore to sector variable in + raid0_make_request + +The variable "sector" in "raid0_make_request()" was improperly updated +by a call to "sector_div()" which modifies its first argument in place. +Commit 47d68979cc968535cb87f3e5f2e6a3533ea48fbd restored this variable +after the call for later re-use. Unfortunetly the restore was done after +the referenced variable "bio" was advanced. This lead to the original +value and the restored value being different. Here we move this line to +the proper place. + +One observed side effect of this bug was discarding a file though +unlinking would cause an unrelated file's contents to be discarded. + +Signed-off-by: NeilBrown +Fixes: 47d68979cc96 ("md/raid0: fix bug with chunksize not a power of 2.") +Cc: stable@vger.kernel.org (any that received above backport) +URL: https://bugzilla.kernel.org/show_bug.cgi?id=98501 +--- + drivers/md/raid0.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c +index 6a68ef5..efb654e 100644 +--- a/drivers/md/raid0.c ++++ b/drivers/md/raid0.c +@@ -524,6 +524,9 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio) + ? (sector & (chunk_sects-1)) + : sector_div(sector, chunk_sects)); + ++ /* Restore due to sector_div */ ++ sector = bio->bi_iter.bi_sector; ++ + if (sectors < bio_sectors(bio)) { + split = bio_split(bio, sectors, GFP_NOIO, fs_bio_set); + bio_chain(split, bio); +@@ -531,7 +534,6 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio) + split = bio; + } + +- sector = bio->bi_iter.bi_sector; + zone = find_zone(mddev->private, §or); + tmp_dev = map_sector(mddev, zone, sector, §or); + split->bi_bdev = tmp_dev->bdev; +-- +2.4.1 +