diff options
Diffstat (limited to 'kernels/linux-libre-xen')
| -rw-r--r-- | kernels/linux-libre-xen/0001-fix-btrfs-mount-deadlock.patch | 43 | ||||
| -rw-r--r-- | kernels/linux-libre-xen/0001-fixup-drm.patch | 70 | ||||
| -rw-r--r-- | kernels/linux-libre-xen/PKGBUILD | 13 |
3 files changed, 125 insertions, 1 deletions
diff --git a/kernels/linux-libre-xen/0001-fix-btrfs-mount-deadlock.patch b/kernels/linux-libre-xen/0001-fix-btrfs-mount-deadlock.patch new file mode 100644 index 000000000..9430d5833 --- /dev/null +++ b/kernels/linux-libre-xen/0001-fix-btrfs-mount-deadlock.patch @@ -0,0 +1,43 @@ +From 9c4f61f01d269815bb7c37be3ede59c5587747c6 Mon Sep 17 00:00:00 2001 +From: David Sterba <dsterba@suse.cz> +Date: Fri, 2 Jan 2015 19:12:57 +0100 +Subject: btrfs: simplify insert_orphan_item + +We can search and add the orphan item in one go, +btrfs_insert_orphan_item will find out if the item already exists. + +Signed-off-by: David Sterba <dsterba@suse.cz> + +diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c +index 5be45c1..25a1c36 100644 +--- a/fs/btrfs/tree-log.c ++++ b/fs/btrfs/tree-log.c +@@ -1254,21 +1254,13 @@ out: + } + + static int insert_orphan_item(struct btrfs_trans_handle *trans, +- struct btrfs_root *root, u64 offset) ++ struct btrfs_root *root, u64 ino) + { + int ret; +- struct btrfs_path *path; +- +- path = btrfs_alloc_path(); +- if (!path) +- return -ENOMEM; + +- ret = btrfs_find_item(root, path, BTRFS_ORPHAN_OBJECTID, +- offset, BTRFS_ORPHAN_ITEM_KEY, NULL); +- if (ret > 0) +- ret = btrfs_insert_orphan_item(trans, root, offset); +- +- btrfs_free_path(path); ++ ret = btrfs_insert_orphan_item(trans, root, ino); ++ if (ret == -EEXIST) ++ ret = 0; + + return ret; + } +-- +cgit v0.10.2 + diff --git a/kernels/linux-libre-xen/0001-fixup-drm.patch b/kernels/linux-libre-xen/0001-fixup-drm.patch new file mode 100644 index 000000000..2acfb1ea6 --- /dev/null +++ b/kernels/linux-libre-xen/0001-fixup-drm.patch @@ -0,0 +1,70 @@ +From 8218c3f4df3bb1c637c17552405039a6dd3c1ee1 Mon Sep 17 00:00:00 2001 +From: Daniel Vetter <daniel.vetter@ffwll.ch> +Date: Fri, 27 Feb 2015 12:58:13 +0100 +Subject: drm: Fixup racy refcounting in plane_force_disable + +Originally it was impossible to be dropping the last refcount in this +function since there was always one around still from the idr. But in + +commit 83f45fc360c8e16a330474860ebda872d1384c8c +Author: Daniel Vetter <daniel.vetter@ffwll.ch> +Date: Wed Aug 6 09:10:18 2014 +0200 + + drm: Don't grab an fb reference for the idr + +we've switched to weak references, broke that assumption but forgot to +fix it up. + +Since we still force-disable planes it's only possible to hit this +when racing multiple rmfb with fbdev restoring or similar evil things. +As long as userspace is nice it's impossible to hit the BUG_ON. + +But the BUG_ON would most likely be hit from fbdev code, which usually +invovles the console_lock besides all modeset locks. So very likely +we'd never get the bug reports if this was hit in the wild, hence +better be safe than sorry and backport. + +Spotted by Matt Roper while reviewing other patches. + +[airlied: pull this back into 4.0 - the oops happens there] + +Cc: stable@vger.kernel.org +Cc: Matt Roper <matthew.d.roper@intel.com> +Reviewed-by: Matt Roper <matthew.d.roper@intel.com> +Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> +Signed-off-by: Dave Airlie <airlied@redhat.com> + +diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c +index f6d04c7..679b10e 100644 +--- a/drivers/gpu/drm/drm_crtc.c ++++ b/drivers/gpu/drm/drm_crtc.c +@@ -525,17 +525,6 @@ void drm_framebuffer_reference(struct drm_framebuffer *fb) + } + EXPORT_SYMBOL(drm_framebuffer_reference); + +-static void drm_framebuffer_free_bug(struct kref *kref) +-{ +- BUG(); +-} +- +-static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) +-{ +- DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount)); +- kref_put(&fb->refcount, drm_framebuffer_free_bug); +-} +- + /** + * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr + * @fb: fb to unregister +@@ -1320,7 +1309,7 @@ void drm_plane_force_disable(struct drm_plane *plane) + return; + } + /* disconnect the plane from the fb and crtc: */ +- __drm_framebuffer_unreference(plane->old_fb); ++ drm_framebuffer_unreference(plane->old_fb); + plane->old_fb = NULL; + plane->fb = NULL; + plane->crtc = NULL; +-- +cgit v0.10.2 + diff --git a/kernels/linux-libre-xen/PKGBUILD b/kernels/linux-libre-xen/PKGBUILD index 14b6e9902..a7428abd6 100644 --- a/kernels/linux-libre-xen/PKGBUILD +++ b/kernels/linux-libre-xen/PKGBUILD @@ -18,7 +18,7 @@ _replacesoldmodules=() # '%' gets replaced with _kernelname _srcname=linux-${_pkgbasever%-*} _archpkgver=${_pkgver%-*} pkgver=${_pkgver//-/_} -pkgrel=1.1 +pkgrel=3 arch=('i686') url="http://linux-libre.fsfla.org/" license=('GPL2') @@ -34,6 +34,8 @@ source=("http://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgbasever}/li 'linux.preset' 'logo_linux_'{clut224.ppm,vga16.ppm,mono.pbm} 'change-default-console-loglevel.patch' + '0001-fix-btrfs-mount-deadlock.patch' + '0001-fixup-drm.patch' '0001-drm-i915-Dont-enable-CS_PARSER_ERROR-interrupts-at-all.patch') sha256sums=('2a60ec99ae498e7cdafac63ecca1c0ca07643eaa6c9a1a83f19e4daa3e75b9d9' 'SKIP' @@ -45,6 +47,8 @@ sha256sums=('2a60ec99ae498e7cdafac63ecca1c0ca07643eaa6c9a1a83f19e4daa3e75b9d9' '6de8a8319271809ffdb072b68d53d155eef12438e6d04ff06a5a4db82c34fa8a' '13bd7a8d9ed6b6bc971e4cd162262c5a20448a83796af39ce394d827b0e5de74' '1256b241cd477b265a3c2d64bdc19ffe3c9bbcee82ea3994c590c2c76e767d99' + '5967cf53cb9db9f070e8f346c3d7045748e4823a7fe2ee330acd18c9d02bbb77' + '911872ef7000af471e649aaeb3490094a0b4c1514ca1024757ca2e90ac1d2a3d' '66cb2d859b253bc4e793baa3c0b95523d647a773b957dbc79b3eaacccf8692b5') validpgpkeys=( '474402C8C582DAFBE389C427BCB7CF877E7D47A7' # Alexandre Oliva @@ -75,6 +79,13 @@ prepare() { # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227) patch -p1 -i "${srcdir}/change-default-console-loglevel.patch" + # fix #44495 and #44385 deadlock on btrfs mount + # https://btrfs.wiki.kernel.org/index.php/Gotchas + patch -Np1 -i "${srcdir}/0001-fix-btrfs-mount-deadlock.patch" + + # fix #44491 + patch -Np1 -i "${srcdir}/0001-fixup-drm.patch" + # drm/i915: Stop gathering error states for CS error interrupts # https://bugzilla.kernel.org/show_bug.cgi?id=93171 patch -p1 -i "${srcdir}/0001-drm-i915-Dont-enable-CS_PARSER_ERROR-interrupts-at-all.patch" |