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fs/xfs: Sync with latest xfs upstream

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Resolves: #RHEL-85960
Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>
This commit is contained in:
Nicolas Frayer 2025-04-03 17:30:37 +02:00
parent 12da33fad6
commit 6b93e67189
9 changed files with 2193 additions and 1 deletions
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1684
0458-fs-Remove-trailing-whitespaces.patch Normal file
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File diff suppressed because it is too large Load Diff

50
0459-fs-xfs-Fix-memory-leaks-in-XFS-module.patch Normal file
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@ -0,0 +1,50 @@
From 1ff9d36ec874d5702be3815e74a71db7764c56ee Mon Sep 17 00:00:00 2001
From: "t.feng" <fengtao40@huawei.com>
Date: Tue, 29 Nov 2022 17:14:15 +0800
Subject: [PATCH 459/464] fs/xfs: Fix memory leaks in XFS module
Signed-off-by: t.feng <fengtao40@huawei.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
grub-core/fs/xfs.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index 17bf01f31ddb..8cf41d07c2ee 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -599,7 +599,10 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
if (grub_disk_read (node->data->disk,
GRUB_XFS_FSB_TO_BLOCK (node->data, get_fsb (keys, i - 1 + recoffset)) << (node->data->sblock.log2_bsize - GRUB_DISK_SECTOR_BITS),
0, node->data->bsize, leaf))
- return 0;
+ {
+ grub_free (leaf);
+ return 0;
+ }
if ((!node->data->hascrc &&
grub_strncmp ((char *) leaf->magic, "BMAP", 4)) ||
@@ -790,6 +793,7 @@ static int iterate_dir_call_hook (grub_uint64_t ino, const char *filename,
if (err)
{
grub_print_error ();
+ grub_free (fdiro);
return 0;
}
@@ -907,7 +911,10 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
blk << dirblk_log2,
dirblk_size, dirblock, 0);
if (numread != dirblk_size)
- return 0;
+ {
+ grub_free (dirblock);
+ return 0;
+ }
entries = (grub_be_to_cpu32 (tail->leaf_count)
- grub_be_to_cpu32 (tail->leaf_stale));
--
2.46.1

51
0460-fs-xfs-Incorrect-short-form-directory-data-boundary-.patch Normal file
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@ -0,0 +1,51 @@
From 270099a784d7dc0d251a8be1fed57e55f4dd4f8f Mon Sep 17 00:00:00 2001
From: Lidong Chen <lidong.chen@oracle.com>
Date: Thu, 28 Sep 2023 22:33:44 +0000
Subject: [PATCH 460/464] fs/xfs: Incorrect short form directory data boundary
check
After parsing of the current entry, the entry pointer is advanced
to the next entry at the end of the "for" loop. In case where the
last entry is at the end of the data boundary, the advanced entry
pointer can point off the data boundary. The subsequent boundary
check for the advanced entry pointer can cause a failure.
The fix is to include the boundary check into the "for" loop
condition.
Signed-off-by: Lidong Chen <lidong.chen@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Tested-by: Marta Lewandowska <mlewando@redhat.com>
---
grub-core/fs/xfs.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index 8cf41d07c2ee..a779eb6b8334 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -836,7 +836,8 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
if (iterate_dir_call_hook (parent, "..", &ctx))
return 1;
- for (i = 0; i < head->count; i++)
+ for (i = 0; i < head->count &&
+ (grub_uint8_t *) de < ((grub_uint8_t *) dir + grub_xfs_fshelp_size (dir->data)); i++)
{
grub_uint64_t ino;
grub_uint8_t *inopos = grub_xfs_inline_de_inopos(dir->data, de);
@@ -871,10 +872,6 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
de->name[de->len] = c;
de = grub_xfs_inline_next_de(dir->data, head, de);
-
- if ((grub_uint8_t *) de >= (grub_uint8_t *) dir + grub_xfs_fshelp_size (dir->data))
- return grub_error (GRUB_ERR_BAD_FS, "invalid XFS directory entry");
-
}
break;
}
--
2.46.1

171
0461-fs-xfs-Fix-XFS-directory-extent-parsing.patch Normal file
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@ -0,0 +1,171 @@
From e5d18ae1b2b0ff58ce720dad90b3539aa2f28ee1 Mon Sep 17 00:00:00 2001
From: Jon DeVree <nuxi@vault24.org>
Date: Tue, 17 Oct 2023 23:03:47 -0400
Subject: [PATCH 461/464] fs/xfs: Fix XFS directory extent parsing
The XFS directory entry parsing code has never been completely correct
for extent based directories. The parser correctly handles the case
where the directory is contained in a single extent, but then mistakenly
assumes the data blocks for the multiple extent case are each identical
to the single extent case. The difference in the format of the data
blocks between the two cases is tiny enough that its gone unnoticed for
a very long time.
A recent change introduced some additional bounds checking into the XFS
parser. Like GRUB's existing parser, it is correct for the single extent
case but incorrect for the multiple extent case. When parsing a directory
with multiple extents, this new bounds checking is sometimes (but not
always) tripped and triggers an "invalid XFS directory entry" error. This
probably would have continued to go unnoticed but the /boot/grub/<arch>
directory is large enough that it often has multiple extents.
The difference between the two cases is that when there are multiple
extents, the data blocks do not contain a trailer nor do they contain
any leaf information. That information is stored in a separate set of
extents dedicated to just the leaf information. These extents come after
the directory entry extents and are not included in the inode size. So
the existing parser already ignores the leaf extents.
The only reason to read the trailer/leaf information at all is so that
the parser can avoid misinterpreting that data as directory entries. So
this updates the parser as follows:
For the single extent case the parser doesn't change much:
1. Read the size of the leaf information from the trailer
2. Set the end pointer for the parser to the start of the leaf
information. (The previous bounds checking set the end pointer to the
start of the trailer, so this is actually a small improvement.)
3. Set the entries variable to the expected number of directory entries.
For the multiple extent case:
1. Set the end pointer to the end of the block.
2. Do not set up the entries variable. Figuring out how many entries are
in each individual block is complex and does not seem worth it when
it appears to be safe to just iterate over the entire block.
The bounds check itself was also dependent upon the faulty XFS parser
because it accidentally used "filename + length - 1". Presumably this
was able to pass the fuzzer because in the old parser there was always
8 bytes of slack space between the tail pointer and the actual end of
the block. Since this is no longer the case the bounds check needs to be
updated to "filename + length + 1" in order to prevent a regression in
the handling of corrupt fliesystems.
Notes:
* When there is only one extent there will only ever be one block. If
more than one block is required then XFS will always switch to holding
leaf information in a separate extent.
* B-tree based directories seems to be parsed properly by the same code
that handles multiple extents. This is unlikely to ever occur within
/boot though because its only used when there are an extremely large
number of directory entries.
Fixes: ef7850c75 (fs/xfs: Fix issues found while fuzzing the XFS filesystem)
Fixes: b2499b29c (Adds support for the XFS filesystem.)
Fixes: https://savannah.gnu.org/bugs/?64376
Signed-off-by: Jon DeVree <nuxi@vault24.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Tested-by: Marta Lewandowska <mlewando@redhat.com>
---
grub-core/fs/xfs.c | 52 +++++++++++++++++++++++++++++++++-------------
1 file changed, 38 insertions(+), 14 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index a779eb6b8334..e178ffcdc290 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -223,6 +223,12 @@ struct grub_xfs_inode
/* Size of struct grub_xfs_inode v2, up to unused4 member included. */
#define XFS_V2_INODE_SIZE (XFS_V3_INODE_SIZE - 76)
+struct grub_xfs_dir_leaf_entry
+{
+ grub_uint32_t hashval;
+ grub_uint32_t address;
+} GRUB_PACKED;
+
struct grub_xfs_dirblock_tail
{
grub_uint32_t leaf_count;
@@ -900,9 +906,8 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
{
struct grub_xfs_dir2_entry *direntry =
grub_xfs_first_de(dir->data, dirblock);
- int entries;
- struct grub_xfs_dirblock_tail *tail =
- grub_xfs_dir_tail(dir->data, dirblock);
+ int entries = -1;
+ char *end = dirblock + dirblk_size;
numread = grub_xfs_read_file (dir, 0, 0,
blk << dirblk_log2,
@@ -913,14 +918,27 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
return 0;
}
- entries = (grub_be_to_cpu32 (tail->leaf_count)
- - grub_be_to_cpu32 (tail->leaf_stale));
+ /*
+ * Leaf and tail information are only in the data block if the number
+ * of extents is 1.
+ */
+ if (dir->inode.nextents == grub_cpu_to_be32_compile_time (1))
+ {
+ struct grub_xfs_dirblock_tail *tail = grub_xfs_dir_tail (dir->data, dirblock);
+
+ end = (char *) tail;
+
+ /* Subtract the space used by leaf nodes. */
+ end -= grub_be_to_cpu32 (tail->leaf_count) * sizeof (struct grub_xfs_dir_leaf_entry);
- if (!entries)
- continue;
+ entries = grub_be_to_cpu32 (tail->leaf_count) - grub_be_to_cpu32 (tail->leaf_stale);
+
+ if (!entries)
+ continue;
+ }
/* Iterate over all entries within this block. */
- while ((char *)direntry < (char *)tail)
+ while ((char *) direntry < (char *) end)
{
grub_uint8_t *freetag;
char *filename;
@@ -940,7 +958,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
}
filename = (char *)(direntry + 1);
- if (filename + direntry->len - 1 > (char *) tail)
+ if (filename + direntry->len + 1 > (char *) end)
return grub_error (GRUB_ERR_BAD_FS, "invalid XFS directory entry");
/* The byte after the filename is for the filetype, padding, or
@@ -954,11 +972,17 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
return 1;
}
- /* Check if last direntry in this block is
- reached. */
- entries--;
- if (!entries)
- break;
+ /*
+ * The expected number of directory entries is only tracked for the
+ * single extent case.
+ */
+ if (dir->inode.nextents == grub_cpu_to_be32_compile_time (1))
+ {
+ /* Check if last direntry in this block is reached. */
+ entries--;
+ if (!entries)
+ break;
+ }
/* Select the next directory entry. */
direntry = grub_xfs_next_de(dir->data, direntry);
--
2.46.1

119
0462-fs-xfs-Add-large-extent-counters-incompat-feature-su.patch Normal file
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@ -0,0 +1,119 @@
From 16ff7f17e65503ed53758ccc0245c1fabd444fb2 Mon Sep 17 00:00:00 2001
From: Anthony Iliopoulos <ailiop@suse.com>
Date: Thu, 26 Oct 2023 11:53:39 +0200
Subject: [PATCH 462/464] fs/xfs: Add large extent counters incompat feature
support
XFS introduced 64-bit extent counters for inodes via a series of
upstream commits and the feature was marked as stable in v6.5 via
commit 61d7e8274cd8 (xfs: drop EXPERIMENTAL tag for large extent
counts).
Further, xfsprogs release v6.5.0 switched this feature on by default
in mkfs.xfs via commit e5b18d7d1d96 (mkfs: enable large extent counts
by default).
Filesystems formatted with large extent count support, nrext64=1, are
thus currently not recognizable by GRUB, since this is an incompat
feature. Add the required support so that those filesystems and inodes
with large extent counters can be read by GRUB.
Signed-off-by: Anthony Iliopoulos <ailiop@suse.com>
Reviewed-by: Andrey Albershteyn <aalbersh@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Marta Lewandowska <mlewando@redhat.com>
Tested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
---
grub-core/fs/xfs.c | 30 +++++++++++++++++++++++++-----
1 file changed, 25 insertions(+), 5 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index e178ffcdc290..70c9f449b133 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -79,6 +79,8 @@ GRUB_MOD_LICENSE ("GPLv3+");
/* Inode flags2 flags */
#define XFS_DIFLAG2_BIGTIME_BIT 3
#define XFS_DIFLAG2_BIGTIME (1 << XFS_DIFLAG2_BIGTIME_BIT)
+#define XFS_DIFLAG2_NREXT64_BIT 4
+#define XFS_DIFLAG2_NREXT64 (1 << XFS_DIFLAG2_NREXT64_BIT)
/* incompat feature flags */
#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */
@@ -86,6 +88,7 @@ GRUB_MOD_LICENSE ("GPLv3+");
#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2) /* metadata UUID */
#define XFS_SB_FEAT_INCOMPAT_BIGTIME (1 << 3) /* large timestamps */
#define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */
+#define XFS_SB_FEAT_INCOMPAT_NREXT64 (1 << 5) /* large extent counters */
/*
* Directory entries with ftype are explicitly handled by GRUB code.
@@ -101,7 +104,8 @@ GRUB_MOD_LICENSE ("GPLv3+");
XFS_SB_FEAT_INCOMPAT_SPINODES | \
XFS_SB_FEAT_INCOMPAT_META_UUID | \
XFS_SB_FEAT_INCOMPAT_BIGTIME | \
- XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR)
+ XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR | \
+ XFS_SB_FEAT_INCOMPAT_NREXT64)
struct grub_xfs_sblock
{
@@ -203,7 +207,8 @@ struct grub_xfs_inode
grub_uint16_t mode;
grub_uint8_t version;
grub_uint8_t format;
- grub_uint8_t unused2[26];
+ grub_uint8_t unused2[18];
+ grub_uint64_t nextents_big;
grub_uint64_t atime;
grub_uint64_t mtime;
grub_uint64_t ctime;
@@ -547,11 +552,26 @@ get_fsb (const void *keys, int idx)
return grub_be_to_cpu64 (grub_get_unaligned64 (p));
}
+static int
+grub_xfs_inode_has_large_extent_counts (const struct grub_xfs_inode *inode)
+{
+ return inode->version >= 3 &&
+ (inode->flags2 & grub_cpu_to_be64_compile_time (XFS_DIFLAG2_NREXT64));
+}
+
+static grub_uint64_t
+grub_xfs_get_inode_nextents (struct grub_xfs_inode *inode)
+{
+ return (grub_xfs_inode_has_large_extent_counts (inode)) ?
+ grub_be_to_cpu64 (inode->nextents_big) :
+ grub_be_to_cpu32 (inode->nextents);
+}
+
static grub_disk_addr_t
grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
{
struct grub_xfs_btree_node *leaf = 0;
- int ex, nrec;
+ grub_uint64_t ex, nrec;
struct grub_xfs_extent *exts;
grub_uint64_t ret = 0;
@@ -576,7 +596,7 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
/ (2 * sizeof (grub_uint64_t));
do
{
- int i;
+ grub_uint64_t i;
grub_addr_t keys_end, data_end;
if (grub_mul (sizeof (grub_uint64_t), nrec, &keys_end) ||
@@ -634,7 +654,7 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
grub_addr_t exts_end = 0;
grub_addr_t data_end = 0;
- nrec = grub_be_to_cpu32 (node->inode.nextents);
+ nrec = grub_xfs_get_inode_nextents (&node->inode);
exts = (struct grub_xfs_extent *) grub_xfs_inode_data(&node->inode);
if (grub_mul (sizeof (struct grub_xfs_extent), nrec, &exts_end) ||
--
2.46.1

57
0463-fs-xfs-Handle-non-continuous-data-blocks-in-director.patch Normal file
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@ -0,0 +1,57 @@
From 300b38fdf7036bf3b2f6244456e1adb3f9c1c359 Mon Sep 17 00:00:00 2001
From: Jon DeVree <nuxi@vault24.org>
Date: Sun, 11 Feb 2024 10:34:58 -0500
Subject: [PATCH 463/464] fs/xfs: Handle non-continuous data blocks in
directory extents
The directory extent list does not have to be a continuous list of data
blocks. When GRUB tries to read a non-existant member of the list,
grub_xfs_read_file() will return a block of zero'ed memory. Checking for
a zero'ed magic number is sufficient to skip this non-existant data block.
Prior to commit 07318ee7e (fs/xfs: Fix XFS directory extent parsing)
this was handled as a subtle side effect of reading the (non-existant)
tail data structure. Since the block was zero'ed the computation of the
number of directory entries in the block would return 0 as well.
Fixes: 07318ee7e (fs/xfs: Fix XFS directory extent parsing)
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2254370
Signed-off-by: Jon DeVree <nuxi@vault24.org>
Reviewed-By: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
grub-core/fs/xfs.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index 70c9f449b133..ab1281497472 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -928,6 +928,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
grub_xfs_first_de(dir->data, dirblock);
int entries = -1;
char *end = dirblock + dirblk_size;
+ grub_uint32_t magic;
numread = grub_xfs_read_file (dir, 0, 0,
blk << dirblk_log2,
@@ -938,6 +939,15 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
return 0;
}
+ /*
+ * If this data block isn't actually part of the extent list then
+ * grub_xfs_read_file() returns a block of zeros. So, if the magic
+ * number field is all zeros then this block should be skipped.
+ */
+ magic = *(grub_uint32_t *)(void *) dirblock;
+ if (!magic)
+ continue;
+
/*
* Leaf and tail information are only in the data block if the number
* of extents is 1.
--
2.46.1

48
0464-fs-xfs-fix-large-extent-counters-incompat-feature-su.patch Normal file
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@ -0,0 +1,48 @@
From 6c6b8bebde2261aac2fbe7abd6d03008a5e06ce9 Mon Sep 17 00:00:00 2001
From: Eric Sandeen <sandeen@redhat.com>
Date: Wed, 4 Dec 2024 07:50:28 -0600
Subject: [PATCH 464/464] fs/xfs: fix large extent counters incompat feature
support
When large extent counter / NREXT64 support was added to grub, it missed
a couple of direct reads of nextents which need to be changed to the new
NREXT64-aware helper as well. Without this, we'll have mis-reads of some
directories with this feature enabled.
(The large extent counter fix likely raced on merge with
07318ee7e ("fs/xfs: Fix XFS directory extent parsing") which added the new
direct nextents reads just prior, causing this issue.)
Fixes: aa7c1322671e ("fs/xfs: Add large extent counters incompat feature support")
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Anthony Iliopoulos <ailiop@suse.com>
Reviewed-by: Jon DeVree <nuxi@vault24.org>
---
grub-core/fs/xfs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index ab1281497472..c60db73613c5 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -952,7 +952,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
* Leaf and tail information are only in the data block if the number
* of extents is 1.
*/
- if (dir->inode.nextents == grub_cpu_to_be32_compile_time (1))
+ if (grub_xfs_get_inode_nextents(&dir->inode) == 1)
{
struct grub_xfs_dirblock_tail *tail = grub_xfs_dir_tail (dir->data, dirblock);
@@ -1006,7 +1006,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
* The expected number of directory entries is only tracked for the
* single extent case.
*/
- if (dir->inode.nextents == grub_cpu_to_be32_compile_time (1))
+ if (grub_xfs_get_inode_nextents(&dir->inode) == 1)
{
/* Check if last direntry in this block is reached. */
entries--;
--
2.46.1

7
grub.patches
View File

@ -454,3 +454,10 @@ Patch0454: 0454-fs-ext2-Rework-out-of-bounds-read-for-inline-and-ext.patch
Patch0455: 0455-tpm-Disable-the-tpm-verifier-if-the-TPM-device-is-no.patch
Patch0456: 0456-powerpc-increase-MIN-RMA-size-for-CAS-negotiation.patch
Patch0457: 0457-ieee1275-ofnet-Fix-grub_malloc-removed-after-added-s.patch
Patch0458: 0458-fs-Remove-trailing-whitespaces.patch
Patch0459: 0459-fs-xfs-Fix-memory-leaks-in-XFS-module.patch
Patch0460: 0460-fs-xfs-Incorrect-short-form-directory-data-boundary-.patch
Patch0461: 0461-fs-xfs-Fix-XFS-directory-extent-parsing.patch
Patch0462: 0462-fs-xfs-Add-large-extent-counters-incompat-feature-su.patch
Patch0463: 0463-fs-xfs-Handle-non-continuous-data-blocks-in-director.patch
Patch0464: 0464-fs-xfs-fix-large-extent-counters-incompat-feature-su.patch

7
grub2.spec
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@ -16,7 +16,7 @@
Name: grub2
Epoch: 1
Version: 2.06
Release: 100%{?dist}
Release: 104%{?dist}
Summary: Bootloader with support for Linux, Multiboot and more
License: GPLv3+
URL: http://www.gnu.org/software/grub/
@ -547,6 +547,11 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
%endif
%changelog
* Thu Apr 3 2025 Nicolas Frayer <nfrayer@redhat.com> 2.06-104
- fs/xfs: Sync with latest xfs upstream
- Resolves: #RHEL-85960
- (NVR bump to catch up with zstream)
* Tue Mar 25 2025 Nicolas Frayer <nfrayer@redhat.com> 2.06-100
- ieee1275/ofnet: Fix grub_malloc() removed after added safe
- Resolves: #RHEL-83117