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[PATCH 3.13.y-ckt 001/122] Btrfs: make xattr replace operations atomic

From Kamal Mostafa <kamal@canonical.com>
Newsgroups linux.kernel
Subject [PATCH 3.13.y-ckt 001/122] Btrfs: make xattr replace operations atomic
Date 2015-06-18 01:10 +0200
Message-ID <pCuD2-7ml-61@gated-at.bofh.it> (permalink)
References <pCu0j-6mo-39@gated-at.bofh.it>
Organization linux.* mail to news gateway

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3.13.11-ckt22 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Filipe Manana <fdmanana@suse.com>

commit 5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339 upstream.

Replacing a xattr consists of doing a lookup for its existing value, delete
the current value from the respective leaf, release the search path and then
finally insert the new value. This leaves a time window where readers (getxattr,
listxattrs) won't see any value for the xattr. Xattrs are used to store ACLs,
so this has security implications.

This change also fixes 2 other existing issues which were:

*) Deleting the old xattr value without verifying first if the new xattr will
   fit in the existing leaf item (in case multiple xattrs are packed in the
   same item due to name hash collision);

*) Returning -EEXIST when the flag XATTR_CREATE is given and the xattr doesn't
   exist but we have have an existing item that packs muliple xattrs with
   the same name hash as the input xattr. In this case we should return ENOSPC.

A test case for xfstests follows soon.

Thanks to Alexandre Oliva for reporting the non-atomicity of the xattr replace
implementation.

Reported-by: Alexandre Oliva <oliva@gnu.org>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
[ luis: backported to 3.13 ]
Reference: CVE-2014-9710
BugLink: https://bugs.launchpad.net/bugs/1438501
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 fs/btrfs/ctree.c    |   2 +-
 fs/btrfs/ctree.h    |   5 ++
 fs/btrfs/dir-item.c |  10 ++--
 fs/btrfs/xattr.c    | 150 ++++++++++++++++++++++++++++++++--------------------
 4 files changed, 102 insertions(+), 65 deletions(-)

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 3de01b4..7ac74d8 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2925,7 +2925,7 @@ done:
 	 */
 	if (!p->leave_spinning)
 		btrfs_set_path_blocking(p);
-	if (ret < 0)
+	if (ret < 0 && !p->skip_release_on_error)
 		btrfs_release_path(p);
 	return ret;
 }
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 54ab861..0f8c095 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -597,6 +597,7 @@ struct btrfs_path {
 	unsigned int skip_locking:1;
 	unsigned int leave_spinning:1;
 	unsigned int search_commit_root:1;
+	unsigned int skip_release_on_error:1;
 };
 
 /*
@@ -3546,6 +3547,10 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
 int verify_dir_item(struct btrfs_root *root,
 		    struct extent_buffer *leaf,
 		    struct btrfs_dir_item *dir_item);
+struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+						 struct btrfs_path *path,
+						 const char *name,
+						 int name_len);
 
 /* orphan.c */
 int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c
index c031ea3..d4185b1 100644
--- a/fs/btrfs/dir-item.c
+++ b/fs/btrfs/dir-item.c
@@ -21,10 +21,6 @@
 #include "hash.h"
 #include "transaction.h"
 
-static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
-			      struct btrfs_path *path,
-			      const char *name, int name_len);
-
 /*
  * insert a name into a directory, doing overflow properly if there is a hash
  * collision.  data_size indicates how big the item inserted should be.  On
@@ -383,9 +379,9 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
  * this walks through all the entries in a dir item and finds one
  * for a specific name.
  */
-static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
-			      struct btrfs_path *path,
-			      const char *name, int name_len)
+struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+						 struct btrfs_path *path,
+						 const char *name, int name_len)
 {
 	struct btrfs_dir_item *dir_item;
 	unsigned long name_ptr;
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 7e21b2b..42c6b2c 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -27,6 +27,7 @@
 #include "transaction.h"
 #include "xattr.h"
 #include "disk-io.h"
+#include "locking.h"
 
 
 ssize_t __btrfs_getxattr(struct inode *inode, const char *name,
@@ -89,7 +90,7 @@ static int do_setxattr(struct btrfs_trans_handle *trans,
 		       struct inode *inode, const char *name,
 		       const void *value, size_t size, int flags)
 {
-	struct btrfs_dir_item *di;
+	struct btrfs_dir_item *di = NULL;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct btrfs_path *path;
 	size_t name_len = strlen(name);
@@ -101,84 +102,119 @@ static int do_setxattr(struct btrfs_trans_handle *trans,
 	path = btrfs_alloc_path();
 	if (!path)
 		return -ENOMEM;
+	path->skip_release_on_error = 1;
+
+	if (!value) {
+		di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode),
+					name, name_len, -1);
+		if (!di && (flags & XATTR_REPLACE))
+			ret = -ENODATA;
+		else if (di)
+			ret = btrfs_delete_one_dir_name(trans, root, path, di);
+		goto out;
+	}
 
+	/*
+	 * For a replace we can't just do the insert blindly.
+	 * Do a lookup first (read-only btrfs_search_slot), and return if xattr
+	 * doesn't exist. If it exists, fall down below to the insert/replace
+	 * path - we can't race with a concurrent xattr delete, because the VFS
+	 * locks the inode's i_mutex before calling setxattr or removexattr.
+	 */
 	if (flags & XATTR_REPLACE) {
-		di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode), name,
-					name_len, -1);
-		if (IS_ERR(di)) {
-			ret = PTR_ERR(di);
-			goto out;
-		} else if (!di) {
+		ASSERT(mutex_is_locked(&inode->i_mutex));
+		di = btrfs_lookup_xattr(NULL, root, path, btrfs_ino(inode),
+					name, name_len, 0);
+		if (!di) {
 			ret = -ENODATA;
 			goto out;
 		}
-		ret = btrfs_delete_one_dir_name(trans, root, path, di);
-		if (ret)
-			goto out;
 		btrfs_release_path(path);
+		di = NULL;
+	}
 
+	ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
+				      name, name_len, value, size);
+	if (ret == -EOVERFLOW) {
 		/*
-		 * remove the attribute
+		 * We have an existing item in a leaf, split_leaf couldn't
+		 * expand it. That item might have or not a dir_item that
+		 * matches our target xattr, so lets check.
 		 */
-		if (!value)
-			goto out;
-	} else {
-		di = btrfs_lookup_xattr(NULL, root, path, btrfs_ino(inode),
-					name, name_len, 0);
-		if (IS_ERR(di)) {
-			ret = PTR_ERR(di);
+		ret = 0;
+		btrfs_assert_tree_locked(path->nodes[0]);
+		di = btrfs_match_dir_item_name(root, path, name, name_len);
+		if (!di && !(flags & XATTR_REPLACE)) {
+			ret = -ENOSPC;
 			goto out;
 		}
-		if (!di && !value)
-			goto out;
-		btrfs_release_path(path);
+	} else if (ret == -EEXIST) {
+		ret = 0;
+		di = btrfs_match_dir_item_name(root, path, name, name_len);
+		ASSERT(di); /* logic error */
+	} else if (ret) {
+		goto out;
 	}
 
-again:
-	ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
-				      name, name_len, value, size);
-	/*
-	 * If we're setting an xattr to a new value but the new value is say
-	 * exactly BTRFS_MAX_XATTR_SIZE, we could end up with EOVERFLOW getting
-	 * back from split_leaf.  This is because it thinks we'll be extending
-	 * the existing item size, but we're asking for enough space to add the
-	 * item itself.  So if we get EOVERFLOW just set ret to EEXIST and let
-	 * the rest of the function figure it out.
-	 */
-	if (ret == -EOVERFLOW)
+	if (di && (flags & XATTR_CREATE)) {
 		ret = -EEXIST;
+		goto out;
+	}
 
-	if (ret == -EEXIST) {
-		if (flags & XATTR_CREATE)
-			goto out;
+	if (di) {
 		/*
-		 * We can't use the path we already have since we won't have the
-		 * proper locking for a delete, so release the path and
-		 * re-lookup to delete the thing.
+		 * We're doing a replace, and it must be atomic, that is, at
+		 * any point in time we have either the old or the new xattr
+		 * value in the tree. We don't want readers (getxattr and
+		 * listxattrs) to miss a value, this is specially important
+		 * for ACLs.
 		 */
-		btrfs_release_path(path);
-		di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode),
-					name, name_len, -1);
-		if (IS_ERR(di)) {
-			ret = PTR_ERR(di);
-			goto out;
-		} else if (!di) {
-			/* Shouldn't happen but just in case... */
-			btrfs_release_path(path);
-			goto again;
+		const int slot = path->slots[0];
+		struct extent_buffer *leaf = path->nodes[0];
+		const u16 old_data_len = btrfs_dir_data_len(leaf, di);
+		const u32 item_size = btrfs_item_size_nr(leaf, slot);
+		const u32 data_size = sizeof(*di) + name_len + size;
+		struct btrfs_item *item;
+		unsigned long data_ptr;
+		char *ptr;
+
+		if (size > old_data_len) {
+			if (btrfs_leaf_free_space(root, leaf) <
+			    (size - old_data_len)) {
+				ret = -ENOSPC;
+				goto out;
+			}
 		}
 
-		ret = btrfs_delete_one_dir_name(trans, root, path, di);
-		if (ret)
-			goto out;
+		if (old_data_len + name_len + sizeof(*di) == item_size) {
+			/* No other xattrs packed in the same leaf item. */
+			if (size > old_data_len)
+				btrfs_extend_item(root, path,
+						  size - old_data_len);
+			else if (size < old_data_len)
+				btrfs_truncate_item(root, path, data_size, 1);
+		} else {
+			/* There are other xattrs packed in the same item. */
+			ret = btrfs_delete_one_dir_name(trans, root, path, di);
+			if (ret)
+				goto out;
+			btrfs_extend_item(root, path, data_size);
+		}
 
+		item = btrfs_item_nr(slot);
+		ptr = btrfs_item_ptr(leaf, slot, char);
+		ptr += btrfs_item_size(leaf, item) - data_size;
+		di = (struct btrfs_dir_item *)ptr;
+		btrfs_set_dir_data_len(leaf, di, size);
+		data_ptr = ((unsigned long)(di + 1)) + name_len;
+		write_extent_buffer(leaf, value, data_ptr, size);
+		btrfs_mark_buffer_dirty(leaf);
+	} else {
 		/*
-		 * We have a value to set, so go back and try to insert it now.
+		 * Insert, and we had space for the xattr, so path->slots[0] is
+		 * where our xattr dir_item is and btrfs_insert_xattr_item()
+		 * filled it.
 		 */
-		if (value) {
-			btrfs_release_path(path);
-			goto again;
-		}
 	}
 out:
 	btrfs_free_path(path);
-- 
1.9.1

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  [PATCH 3.13.y-ckt 096/122] KVM: MMU: fix smap permission check Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 074/122] md/raid5: don't record new size if resize_stripes fails. Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 075/122] xhci: fix isoc endpoint dequeue from advancing too far on transaction error Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 064/122] libata: Add helper to determine when PHY events should be ignored Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 062/122] mmc: core: add missing pm event in mmc_pm_notify to fix hib restore Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 084/122] ext4: check for zero length extent explicitly Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 056/122] path_openat(): fix double fput() Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 065/122] libata: Ignore spurious PHY event on LPM policy change Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 067/122] rtlwifi: rtl8192cu: Fix kernel deadlock Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 090/122] Drivers: hv: vmbus: Add support for VMBus panic notifier handler Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 073/122] ACPI / init: Fix the ordering of acpi_reserve_resources() Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 091/122] Drivers: hv: vmbus: Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 094/122] ASoC: uda1380: Avoid accessing i2c bus when codec is disabled Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 052/122] nilfs2: fix sanity check of btree level in nilfs_btree_root_broken() Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 072/122] svcrpc: fix potential GSSX_ACCEPT_SEC_CONTEXT decoding failures Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 076/122] xhci: Solve full event ring by increasing TRBS_PER_SEGMENT to 256 Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 069/122] USB: pl2303: Remove support for Samsung I330 Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 057/122] mnt: Fix fs_fully_visible to verify the root directory is visible Kamal Mostafa <kamal@canonical.com> - 2015-06-18 00:50 +0200
  [PATCH 3.13.y-ckt 026/122] 3w-9xxx: fix command completion race Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 034/122] powerpc/pseries: Correct cpu affinity for dlpar added cpus Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 018/122] ASoC: dapm: Enable autodisable on SOC_DAPM_SINGLE_TLV_AUTODISABLE Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 011/122] scripts/sortextable: suppress warning: `relocs_size' may be used uninitialized Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 043/122] ARM: dts: imx28: Fix AUART4 TX-DMA interrupt name Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 023/122] SCSI: add 1024 max sectors black list flag Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 024/122] 3w-sas: fix command completion race Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 017/122] ozwpan: unchecked signed subtraction leads to DoS Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 040/122] ARM: dts: imx23-olinuxino: Fix polarity of LED GPIO Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 020/122] ALSA: emu10k1: Fix card shortname string buffer overflow Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 044/122] gpio: sysfs: fix memory leaks and device hotplug Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 039/122] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 019/122] ALSA: hda - Fix mute-LED fixed mode Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 042/122] ARM: dts: imx25: Add #pwm-cells to pwm4 Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 036/122] efivarfs: Ensure VariableName is NUL-terminated Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 041/122] ARM: dts: imx23-olinuxino: Fix dr_mode of usb0 Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 030/122] tty/serial: at91: maxburst was missing for dma transfers Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 050/122] xen/events: Set irq_info->evtchn before binding the channel to CPU in __startup_pirq() Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 035/122] bridge/mdb: remove wrong use of NLM_F_MULTI Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 038/122] writeback: use |1 instead of +1 to protect against div by zero Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 016/122] ozwpan: Use proper check to prevent heap overflow Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 046/122] RDMA/CMA: Canonize IPv4 on IPV6 sockets properly Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 045/122] drm/radeon: disable semaphores for UVD V1 (v2) Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 027/122] cdc-acm: prevent infinite loop when parsing CDC headers. Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 028/122] serial: xilinx: Use platform_get_irq to get irq description structure Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 048/122] drm/i915: Add missing MacBook Pro models with dual channel LVDS Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 049/122] xen/console: Update console event channel on resume Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 033/122] rbd: end I/O the entire obj_request on error Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 032/122] ALSA: emu10k1: Emu10k2 32 bit DMA mode Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 015/122] ozwpan: divide-by-zero leading to panic Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 037/122] x86/efi: Store upper bits of command line buffer address in ext_cmd_line_ptr Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 014/122] ozwpan: Use unsigned ints to prevent heap overflow Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 047/122] drm/i915: Assume dual channel LVDS if pixel clock necessitates it Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 022/122] drm/radeon: add SI DPM quirk for Sapphire R9 270 Dual-X 2G GDDR5 Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:00 +0200
  [PATCH 3.13.y-ckt 007/122] qla2xxx: remove redundant declaration in 'qla_gbl.h' Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 002/122] vhost/scsi: potential memory corruption Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 008/122] staging: wlags49_h2: fix extern inline functions Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 012/122] udf: Remove repeated loads blocksize Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 021/122] ALSA: emux: Fix mutex deadlock at unloading Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 006/122] staging: rtl8712, rtl8712: avoid lots of build warnings Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 010/122] kconfig: Fix warning "‘jump’ may be used uninitialized" Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 001/122] Btrfs: make xattr replace operations atomic Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 005/122] staging, rtl8192e, LLVMLinux: Remove unused inline prototype Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 013/122] udf: Check length of extended attributes and allocation descriptors Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 009/122] ARM: 8307/1: psci: move psci firmware calls out of line Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200
  [PATCH 3.13.y-ckt 004/122] kernel: use the gnu89 standard explicitly Kamal Mostafa <kamal@canonical.com> - 2015-06-18 01:10 +0200

csiph-web