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Accepting request 481686 from home:michael-chang:branches:Base:System

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- Fix out of memory error on lvm detection (bsc#1016536) (bsc#1027401)
  * grub2-lvm-allocate-metadata-buffer-from-raw-contents.patch
- Fix boot failure if /boot is separate btrfs partition (bsc#1023160)
  * grub2-btrfs-06-subvol-mount.patch

OBS-URL: https://build.opensuse.org/request/show/481686
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=266
This commit is contained in:
Andrei Borzenkov 2017-03-21 10:35:03 +00:00 committed by Git OBS Bridge
parent 2b76639968
commit e1ec6a007e
4 changed files with 167 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
grub2-btrfs-06-subvol-mount.patch
View File

@ -1,7 +1,7 @@
Index: grub-2.02~rc1/grub-core/fs/btrfs.c
Index: grub-2.02~rc2/grub-core/fs/btrfs.c
===================================================================
--- grub-2.02~rc1.orig/grub-core/fs/btrfs.c
+++ grub-2.02~rc1/grub-core/fs/btrfs.c
--- grub-2.02~rc2.orig/grub-core/fs/btrfs.c
+++ grub-2.02~rc2/grub-core/fs/btrfs.c
@@ -32,6 +32,7 @@
#include <grub/command.h>
#include <grub/env.h>
@ -264,10 +264,10 @@ Index: grub-2.02~rc1/grub-core/fs/btrfs.c
cmd_list_subvols = grub_register_extcmd("btrfs-list-subvols",
grub_cmd_btrfs_list_subvols, 0,
"[-p|-n] [-o var] DEVICE",
Index: grub-2.02~rc1/grub-core/osdep/linux/getroot.c
Index: grub-2.02~rc2/grub-core/osdep/linux/getroot.c
===================================================================
--- grub-2.02~rc1.orig/grub-core/osdep/linux/getroot.c
+++ grub-2.02~rc1/grub-core/osdep/linux/getroot.c
--- grub-2.02~rc2.orig/grub-core/osdep/linux/getroot.c
+++ grub-2.02~rc2/grub-core/osdep/linux/getroot.c
@@ -107,6 +107,14 @@ struct btrfs_ioctl_search_key
grub_uint32_t unused[9];
};
@ -412,7 +412,7 @@ Index: grub-2.02~rc1/grub-core/osdep/linux/getroot.c
}
}
else if (!retry && grub_strcmp (entries[i].fstype, "autofs") == 0)
@@ -1144,6 +1258,34 @@ grub_util_get_grub_dev_os (const char *o
@@ -1148,6 +1262,34 @@ grub_util_get_grub_dev_os (const char *o
return grub_dev;
}
@ -447,11 +447,11 @@ Index: grub-2.02~rc1/grub-core/osdep/linux/getroot.c
char *
grub_make_system_path_relative_to_its_root_os (const char *path)
{
Index: grub-2.02~rc1/util/grub-install.c
Index: grub-2.02~rc2/util/grub-install.c
===================================================================
--- grub-2.02~rc1.orig/util/grub-install.c
+++ grub-2.02~rc1/util/grub-install.c
@@ -1560,6 +1560,42 @@ main (int argc, char *argv[])
--- grub-2.02~rc2.orig/util/grub-install.c
+++ grub-2.02~rc2/util/grub-install.c
@@ -1560,6 +1560,55 @@ main (int argc, char *argv[])
prefix_drive = xasprintf ("(%s)", grub_drives[0]);
}
@ -462,11 +462,16 @@ Index: grub-2.02~rc1/util/grub-install.c
+ {
+ char *subvol = NULL;
+ char *mount_path = NULL;
+ char **rootdir_devices = NULL;
+ char *rootdir_path = grub_util_path_concat (2, "/", rootdir);
+
+ if (!load_cfg_f)
+ load_cfg_f = grub_util_fopen (load_cfg, "wb");
+ have_load_cfg = 1;
+ if (grub_util_is_directory (rootdir_path))
+ rootdir_devices = grub_guess_root_devices (rootdir_path);
+
+ free (rootdir_path);
+
+ if (rootdir_devices && rootdir_devices[0])
+ if (grub_strcmp (rootdir_devices[0], grub_devices[0]) == 0)
+ subvol = grub_util_get_btrfs_subvol (platdir, &mount_path);
+
+ if (subvol && mount_path)
@ -477,12 +482,20 @@ Index: grub-2.02~rc1/util/grub-install.c
+
+ if (def_subvol)
+ {
+ if (!load_cfg_f)
+ load_cfg_f = grub_util_fopen (load_cfg, "wb");
+ have_load_cfg = 1;
+
+ if (grub_strcmp (subvol, def_subvol) != 0)
+ fprintf (load_cfg_f, "btrfs-mount-subvol ($root) %s %s\n", mount_path, subvol);
+ free (def_subvol);
+ }
+ }
+
+ for (curdev = rootdir_devices; *curdev; curdev++)
+ free (*curdev);
+ if (rootdir_devices)
+ free (rootdir_devices);
+ if (subvol)
+ free (subvol);
+ if (mount_path)
@ -494,10 +507,10 @@ Index: grub-2.02~rc1/util/grub-install.c
char mkimage_target[200];
const char *core_name = NULL;
Index: grub-2.02~rc1/include/grub/emu/getroot.h
Index: grub-2.02~rc2/include/grub/emu/getroot.h
===================================================================
--- grub-2.02~rc1.orig/include/grub/emu/getroot.h
+++ grub-2.02~rc1/include/grub/emu/getroot.h
--- grub-2.02~rc2.orig/include/grub/emu/getroot.h
+++ grub-2.02~rc2/include/grub/emu/getroot.h
@@ -53,6 +53,11 @@ char **
grub_find_root_devices_from_mountinfo (const char *dir, char **relroot);
#endif

126
grub2-lvm-allocate-metadata-buffer-from-raw-contents.patch Normal file
View File

@ -0,0 +1,126 @@
From 87636b6eb33d10fad13739c39128029cde076c03 Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Mon, 20 Mar 2017 14:59:41 +0800
Subject: [PATCH] Allocate LVM metadata buffer from raw contents
The size reserved for on disk LVM metadata area can be exceedingly large that
may trigger out of memory error for allocating buffer based on it. Refine the
buffer allocation to use size of raw LVM metadata contents and read them from
within the metadata area as we only need to parse the JSON formatted contents
rather than the entire metadata area. This reduced the size significantly and
the likelihood to out of memory error.
---
grub-core/disk/lvm.c | 65 ++++++++++++++++++++++++++++++++++++----------------
1 file changed, 45 insertions(+), 20 deletions(-)
diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
index 7b265c7..47aae05 100644
--- a/grub-core/disk/lvm.c
+++ b/grub-core/disk/lvm.c
@@ -102,9 +102,11 @@ grub_lvm_detect (grub_disk_t disk,
{
grub_err_t err;
grub_uint64_t mda_offset, mda_size;
+ grub_uint64_t mda_raw_offset, mda_raw_size;
char buf[GRUB_LVM_LABEL_SIZE];
char vg_id[GRUB_LVM_ID_STRLEN+1];
char pv_id[GRUB_LVM_ID_STRLEN+1];
+ char mdah_buf[sizeof (struct grub_lvm_mda_header) + sizeof (struct grub_lvm_raw_locn)];
char *metadatabuf, *p, *q, *vgname;
struct grub_lvm_label_header *lh = (struct grub_lvm_label_header *) buf;
struct grub_lvm_pv_header *pvh;
@@ -167,21 +169,15 @@ grub_lvm_detect (grub_disk_t disk,
dlocn++;
mda_offset = grub_le_to_cpu64 (dlocn->offset);
- mda_size = grub_le_to_cpu64 (dlocn->size);
/* It's possible to have multiple copies of metadata areas, we just use the
first one. */
-
- /* Allocate buffer space for the circular worst-case scenario. */
- metadatabuf = grub_malloc (2 * mda_size);
- if (! metadatabuf)
+ err = grub_disk_read (disk, 0, mda_offset, sizeof (mdah_buf), mdah_buf);
+ if (err)
goto fail;
- err = grub_disk_read (disk, 0, mda_offset, mda_size, metadatabuf);
- if (err)
- goto fail2;
+ mdah = (struct grub_lvm_mda_header *) mdah_buf;
- mdah = (struct grub_lvm_mda_header *) metadatabuf;
if ((grub_strncmp ((char *)mdah->magic, GRUB_LVM_FMTT_MAGIC,
sizeof (mdah->magic)))
|| (grub_le_to_cpu32 (mdah->version) != GRUB_LVM_FMTT_VERSION))
@@ -191,26 +187,55 @@ grub_lvm_detect (grub_disk_t disk,
#ifdef GRUB_UTIL
grub_util_info ("unknown LVM metadata header");
#endif
- goto fail2;
+ goto fail;
}
rlocn = mdah->raw_locns;
- if (grub_le_to_cpu64 (rlocn->offset) + grub_le_to_cpu64 (rlocn->size) >
- grub_le_to_cpu64 (mdah->size))
+
+ mda_size = grub_le_to_cpu64 (mdah->size);
+ mda_raw_size = grub_le_to_cpu64 (rlocn->size);
+ mda_raw_offset = grub_le_to_cpu64 (rlocn->offset);
+
+ metadatabuf = grub_malloc (mda_raw_size);
+
+ if (! metadatabuf)
+ goto fail;
+
+ if (mda_raw_offset > mda_size)
+ goto fail2;
+
+ if (mda_raw_offset + mda_raw_size > mda_size)
{
+ err = grub_disk_read (disk, 0,
+ mda_offset + mda_raw_offset,
+ mda_size - mda_raw_offset,
+ metadatabuf);
+ if (err)
+ goto fail2;
+
/* Metadata is circular. Copy the wrap in place. */
- grub_memcpy (metadatabuf + mda_size,
- metadatabuf + GRUB_LVM_MDA_HEADER_SIZE,
- grub_le_to_cpu64 (rlocn->offset) +
- grub_le_to_cpu64 (rlocn->size) -
- grub_le_to_cpu64 (mdah->size));
+ err = grub_disk_read (disk, 0,
+ mda_offset + GRUB_LVM_MDA_HEADER_SIZE,
+ mda_raw_offset + mda_raw_size - mda_size,
+ metadatabuf + mda_size - mda_raw_offset);
+ if (err)
+ goto fail2;
+ }
+ else
+ {
+ err = grub_disk_read (disk, 0,
+ mda_offset + mda_raw_offset,
+ mda_raw_size,
+ metadatabuf);
+ if (err)
+ goto fail2;
}
- p = q = metadatabuf + grub_le_to_cpu64 (rlocn->offset);
+ p = q = metadatabuf;
- while (*q != ' ' && q < metadatabuf + mda_size)
+ while (*q != ' ' && q < metadatabuf + mda_raw_size)
q++;
- if (q == metadatabuf + mda_size)
+ if (q == metadatabuf + mda_raw_size)
{
#ifdef GRUB_UTIL
grub_util_info ("error parsing metadata");
--
2.6.6

8
grub2.changes
View File

@ -1,3 +1,11 @@
-------------------------------------------------------------------
Mon Mar 20 09:43:58 UTC 2017 - mchang@suse.com
- Fix out of memory error on lvm detection (bsc#1016536) (bsc#1027401)
* grub2-lvm-allocate-metadata-buffer-from-raw-contents.patch
- Fix boot failure if /boot is separate btrfs partition (bsc#1023160)
* grub2-btrfs-06-subvol-mount.patch
-------------------------------------------------------------------
Fri Mar 17 06:22:42 UTC 2017 - mchang@suse.com

2
grub2.spec
View File

@ -207,6 +207,7 @@ Patch77: grub2-s390x-08-workaround-part-to-disk.patch
Patch78: grub2-commands-introduce-read_file-subcommand.patch
Patch79: grub2-efi-chainload-harder.patch
Patch80: grub2-emu-4-all.patch
Patch81: grub2-lvm-allocate-metadata-buffer-from-raw-contents.patch
# Btrfs snapshot booting related patches
Patch101: grub2-btrfs-01-add-ability-to-boot-from-subvolumes.patch
Patch102: grub2-btrfs-02-export-subvolume-envvars.patch
@ -468,6 +469,7 @@ swap partition while in resuming
%patch78 -p1
%patch79 -p1
%patch80 -p1
%patch81 -p1
%patch101 -p1
%patch102 -p1
%patch103 -p1