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Some more bug fixes and just some general hygiene.

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Add 2 conditions to boot-success timer and service:
  Don't run it for system users
  Resolves: rhbz#1592201
  Don't run it when pkexec isn't available
  Resolves: rhbz#1619445
Use -Wsign-compare -Wconversion -Wextra in the build.
  Related: rhbz#1624532
  Related: rhbz#1626844

Signed-off-by: Peter Jones <pjones@redhat.com>
This commit is contained in:
Peter Jones 2018-09-12 10:34:10 -04:00
parent 98536ecf37
commit c4e6bf30f6
5 changed files with 496 additions and 1 deletions
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392
0240-Attempt-to-fix-up-all-the-places-Wsign-compare-error.patch Normal file
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@ -0,0 +1,392 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Tue, 11 Sep 2018 16:41:30 -0400
Subject: [PATCH] Attempt to fix up all the places -Wsign-compare=error finds.
Signed-off-by: Peter Jones <pjones@redhat.com>
---
grub-core/gnulib/regcomp.c | 4 ++--
grub-core/gnulib/regex_internal.c | 6 +++---
grub-core/gnulib/regexec.c | 20 ++++++++++----------
grub-core/kern/emu/misc.c | 2 +-
grub-core/lib/reed_solomon.c | 4 ++--
grub-core/osdep/linux/blocklist.c | 2 +-
grub-core/osdep/linux/getroot.c | 2 +-
grub-core/osdep/linux/hostdisk.c | 2 +-
util/grub-fstest.c | 2 +-
util/grub-menulst2cfg.c | 2 +-
util/grub-mkfont.c | 13 +++++++------
util/grub-probe.c | 2 +-
util/grub-rpm-sort.c | 2 +-
util/setup.c | 2 +-
grub-core/gnulib/regex.h | 2 +-
grub-core/gnulib/regex_internal.h | 4 ++--
16 files changed, 36 insertions(+), 35 deletions(-)
diff --git a/grub-core/gnulib/regcomp.c b/grub-core/gnulib/regcomp.c
index 596e0cf3ef7..e0ebd8d497a 100644
--- a/grub-core/gnulib/regcomp.c
+++ b/grub-core/gnulib/regcomp.c
@@ -334,7 +334,7 @@ re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
*p++ = dfa->nodes[node].opr.c;
memset (&state, '\0', sizeof (state));
if (__mbrtowc (&wc, (const char *) buf, p - buf,
- &state) == p - buf
+ &state) == (size_t)(p - buf)
&& (__wcrtomb ((char *) buf, towlower (wc), &state)
!= (size_t) -1))
re_set_fastmap (fastmap, false, buf[0]);
@@ -3760,7 +3760,7 @@ fetch_number (re_string_t *input, re_token_t *token, reg_syntax_t syntax)
|| num == REG_ERROR)
? REG_ERROR
: num == REG_MISSING
- ? c - '0'
+ ? (Idx)(c - '0')
: MIN (RE_DUP_MAX + 1, num * 10 + c - '0'));
}
return num;
diff --git a/grub-core/gnulib/regex_internal.c b/grub-core/gnulib/regex_internal.c
index 899b0ae67e1..836ea5d0ca7 100644
--- a/grub-core/gnulib/regex_internal.c
+++ b/grub-core/gnulib/regex_internal.c
@@ -224,7 +224,7 @@ build_wcs_buffer (re_string_t *pstr)
/* Apply the translation if we need. */
if (BE (pstr->trans != NULL, 0))
{
- int i, ch;
+ unsigned int i, ch;
for (i = 0; i < pstr->mb_cur_max && i < remain_len; ++i)
{
@@ -367,7 +367,7 @@ build_wcs_upper_buffer (re_string_t *pstr)
prev_st = pstr->cur_state;
if (BE (pstr->trans != NULL, 0))
{
- int i, ch;
+ unsigned int i, ch;
for (i = 0; i < pstr->mb_cur_max && i < remain_len; ++i)
{
@@ -751,7 +751,7 @@ re_string_reconstruct (re_string_t *pstr, Idx idx, int eflags)
memset (&cur_state, 0, sizeof (cur_state));
mbclen = __mbrtowc (&wc2, (const char *) pp, mlen,
&cur_state);
- if (raw + offset - p <= mbclen
+ if ((size_t)(raw + offset - p) <= mbclen
&& mbclen < (size_t) -2)
{
memset (&pstr->cur_state, '\0',
diff --git a/grub-core/gnulib/regexec.c b/grub-core/gnulib/regexec.c
index a7776f088f2..402a85c9c6a 100644
--- a/grub-core/gnulib/regexec.c
+++ b/grub-core/gnulib/regexec.c
@@ -490,7 +490,7 @@ re_search_stub (struct re_pattern_buffer *bufp,
{
if (ret_len)
{
- assert (pmatch[0].rm_so == start);
+ assert (pmatch[0].rm_so == (long)start);
rval = pmatch[0].rm_eo - start;
}
else
@@ -928,11 +928,11 @@ re_search_internal (const regex_t *preg,
if (BE (mctx.input.offsets_needed != 0, 0))
{
pmatch[reg_idx].rm_so =
- (pmatch[reg_idx].rm_so == mctx.input.valid_len
+ (pmatch[reg_idx].rm_so == (long)mctx.input.valid_len
? mctx.input.valid_raw_len
: mctx.input.offsets[pmatch[reg_idx].rm_so]);
pmatch[reg_idx].rm_eo =
- (pmatch[reg_idx].rm_eo == mctx.input.valid_len
+ (pmatch[reg_idx].rm_eo == (long)mctx.input.valid_len
? mctx.input.valid_raw_len
: mctx.input.offsets[pmatch[reg_idx].rm_eo]);
}
@@ -1472,11 +1472,11 @@ set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
}
memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
- for (idx = pmatch[0].rm_so; idx <= pmatch[0].rm_eo ;)
+ for (idx = pmatch[0].rm_so; idx <= (long)pmatch[0].rm_eo ;)
{
update_regs (dfa, pmatch, prev_idx_match, cur_node, idx, nmatch);
- if (idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
+ if (idx == (long)pmatch[0].rm_eo && cur_node == mctx->last_node)
{
Idx reg_idx;
if (fs)
@@ -1575,7 +1575,7 @@ update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
if (reg_num < nmatch)
{
/* We are at the last node of this sub expression. */
- if (pmatch[reg_num].rm_so < cur_idx)
+ if (pmatch[reg_num].rm_so < (long)cur_idx)
{
pmatch[reg_num].rm_eo = cur_idx;
/* This is a non-empty match or we are not inside an optional
@@ -3006,7 +3006,7 @@ check_arrival (re_match_context_t *mctx, state_array_t *path, Idx top_node,
mctx->state_log[str_idx] = cur_state;
}
- for (null_cnt = 0; str_idx < last_str && null_cnt <= mctx->max_mb_elem_len;)
+ for (null_cnt = 0; str_idx < last_str && null_cnt <= (long)mctx->max_mb_elem_len;)
{
re_node_set_empty (&next_nodes);
if (mctx->state_log[str_idx + 1])
@@ -3786,7 +3786,7 @@ check_node_accept_bytes (const re_dfa_t *dfa, Idx node_idx,
const re_string_t *input, Idx str_idx)
{
const re_token_t *node = dfa->nodes + node_idx;
- int char_len, elem_len;
+ unsigned int char_len, elem_len;
Idx i;
if (BE (node->type == OP_UTF8_PERIOD, 0))
@@ -4144,7 +4144,7 @@ extend_buffers (re_match_context_t *mctx, int min_len)
/* Double the lengths of the buffers, but allocate at least MIN_LEN. */
ret = re_string_realloc_buffers (pstr,
MAX (min_len,
- MIN (pstr->len, pstr->bufs_len * 2)));
+ MIN ((long)pstr->len, (long)(pstr->bufs_len * 2))));
if (BE (ret != REG_NOERROR, 0))
return ret;
@@ -4316,7 +4316,7 @@ match_ctx_add_entry (re_match_context_t *mctx, Idx node, Idx str_idx, Idx from,
= (from == to ? -1 : 0);
mctx->bkref_ents[mctx->nbkref_ents++].more = 0;
- if (mctx->max_mb_elem_len < to - from)
+ if (mctx->max_mb_elem_len < (long)(to - from))
mctx->max_mb_elem_len = to - from;
return REG_NOERROR;
}
diff --git a/grub-core/kern/emu/misc.c b/grub-core/kern/emu/misc.c
index 3d3a4a4a975..9367caf763c 100644
--- a/grub-core/kern/emu/misc.c
+++ b/grub-core/kern/emu/misc.c
@@ -175,7 +175,7 @@ grub_util_get_image_size (const char *path)
sz = ftello (f);
if (sz < 0)
grub_util_error (_("cannot open `%s': %s"), path, strerror (errno));
- if (sz != (size_t) sz)
+ if (sz > (off_t)(GRUB_SIZE_MAX >> 1))
grub_util_error (_("file `%s' is too big"), path);
ret = (size_t) sz;
diff --git a/grub-core/lib/reed_solomon.c b/grub-core/lib/reed_solomon.c
index ee9fa7b4feb..19c20085279 100644
--- a/grub-core/lib/reed_solomon.c
+++ b/grub-core/lib/reed_solomon.c
@@ -156,7 +156,7 @@ static void
rs_encode (gf_single_t *data, grub_size_t s, grub_size_t rs)
{
gf_single_t *rs_polynomial;
- int i, j;
+ unsigned int i, j;
gf_single_t *m;
m = xmalloc ((s + rs) * sizeof (gf_single_t));
grub_memcpy (m, data, s * sizeof (gf_single_t));
@@ -325,7 +325,7 @@ static void
encode_block (gf_single_t *ptr, grub_size_t s,
gf_single_t *rptr, grub_size_t rs)
{
- int i, j;
+ unsigned int i, j;
for (i = 0; i < SECTOR_SIZE; i++)
{
grub_size_t ds = (s + SECTOR_SIZE - 1 - i) / SECTOR_SIZE;
diff --git a/grub-core/osdep/linux/blocklist.c b/grub-core/osdep/linux/blocklist.c
index c77d6085ccb..42a315031ff 100644
--- a/grub-core/osdep/linux/blocklist.c
+++ b/grub-core/osdep/linux/blocklist.c
@@ -109,7 +109,7 @@ grub_install_get_blocklist (grub_device_t root_dev,
else
{
struct fiemap *fie2;
- int i;
+ unsigned int i;
fie2 = xmalloc (sizeof (*fie2)
+ fie1.fm_mapped_extents
* sizeof (fie1.fm_extents[1]));
diff --git a/grub-core/osdep/linux/getroot.c b/grub-core/osdep/linux/getroot.c
index 4c5a13022dc..2b7a626d5ea 100644
--- a/grub-core/osdep/linux/getroot.c
+++ b/grub-core/osdep/linux/getroot.c
@@ -236,7 +236,7 @@ grub_find_root_devices_from_btrfs (const char *dir)
{
int fd;
struct btrfs_ioctl_fs_info_args fsi;
- int i, j = 0;
+ unsigned int i, j = 0;
char **ret;
fd = open (dir, 0);
diff --git a/grub-core/osdep/linux/hostdisk.c b/grub-core/osdep/linux/hostdisk.c
index 06179fca725..bee732c2133 100644
--- a/grub-core/osdep/linux/hostdisk.c
+++ b/grub-core/osdep/linux/hostdisk.c
@@ -83,7 +83,7 @@ grub_util_get_fd_size_os (grub_util_fd_t fd, const char *name, unsigned *log_sec
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
- (1 << log_sector_size) < sector_size;
+ (1U << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
diff --git a/util/grub-fstest.c b/util/grub-fstest.c
index a358ae47152..f82f9504054 100644
--- a/util/grub-fstest.c
+++ b/util/grub-fstest.c
@@ -323,7 +323,7 @@ cmd_cmp (char *src, char *dest)
read_file (src, cmp_hook, ff);
{
- grub_uint64_t pre;
+ long long pre;
pre = ftell (ff);
fseek (ff, 0, SEEK_END);
if (pre != ftell (ff))
diff --git a/util/grub-menulst2cfg.c b/util/grub-menulst2cfg.c
index a39f8693947..358d604210b 100644
--- a/util/grub-menulst2cfg.c
+++ b/util/grub-menulst2cfg.c
@@ -34,7 +34,7 @@ main (int argc, char **argv)
char *buf = NULL;
size_t bufsize = 0;
char *suffix = xstrdup ("");
- int suffixlen = 0;
+ size_t suffixlen = 0;
const char *out_fname = 0;
grub_util_host_init (&argc, &argv);
diff --git a/util/grub-mkfont.c b/util/grub-mkfont.c
index 0fe45a6103d..3e09240b99f 100644
--- a/util/grub-mkfont.c
+++ b/util/grub-mkfont.c
@@ -138,7 +138,8 @@ add_glyph (struct grub_font_info *font_info, FT_UInt glyph_idx, FT_Face face,
int width, height;
int cuttop, cutbottom, cutleft, cutright;
grub_uint8_t *data;
- int mask, i, j, bitmap_size;
+ int mask, i, bitmap_size;
+ unsigned int j;
FT_GlyphSlot glyph;
int flag = FT_LOAD_RENDER | FT_LOAD_MONOCHROME;
FT_Error err;
@@ -183,7 +184,7 @@ add_glyph (struct grub_font_info *font_info, FT_UInt glyph_idx, FT_Face face,
cuttop = cutbottom = cutleft = cutright = 0;
else
{
- for (cuttop = 0; cuttop < glyph->bitmap.rows; cuttop++)
+ for (cuttop = 0; cuttop < (long)glyph->bitmap.rows; cuttop++)
{
for (j = 0; j < glyph->bitmap.width; j++)
if (glyph->bitmap.buffer[j / 8 + cuttop * glyph->bitmap.pitch]
@@ -203,10 +204,10 @@ add_glyph (struct grub_font_info *font_info, FT_UInt glyph_idx, FT_Face face,
break;
}
cutbottom = glyph->bitmap.rows - 1 - cutbottom;
- if (cutbottom + cuttop >= glyph->bitmap.rows)
+ if (cutbottom + cuttop >= (long)glyph->bitmap.rows)
cutbottom = 0;
- for (cutleft = 0; cutleft < glyph->bitmap.width; cutleft++)
+ for (cutleft = 0; cutleft < (long)glyph->bitmap.width; cutleft++)
{
for (j = 0; j < glyph->bitmap.rows; j++)
if (glyph->bitmap.buffer[cutleft / 8 + j * glyph->bitmap.pitch]
@@ -225,7 +226,7 @@ add_glyph (struct grub_font_info *font_info, FT_UInt glyph_idx, FT_Face face,
break;
}
cutright = glyph->bitmap.width - 1 - cutright;
- if (cutright + cutleft >= glyph->bitmap.width)
+ if (cutright + cutleft >= (long)glyph->bitmap.width)
cutright = 0;
}
@@ -262,7 +263,7 @@ add_glyph (struct grub_font_info *font_info, FT_UInt glyph_idx, FT_Face face,
mask = 0;
data = &glyph_info->bitmap[0] - 1;
- for (j = cuttop; j < height + cuttop; j++)
+ for (j = cuttop; j < (long)height + cuttop; j++)
for (i = cutleft; i < width + cutleft; i++)
add_pixel (&data, &mask,
glyph->bitmap.buffer[i / 8 + j * glyph->bitmap.pitch] &
diff --git a/util/grub-probe.c b/util/grub-probe.c
index e45dbf9e049..e50bd43699d 100644
--- a/util/grub-probe.c
+++ b/util/grub-probe.c
@@ -798,7 +798,7 @@ argp_parser (int key, char *arg, struct argp_state *state)
case 't':
{
- int i;
+ unsigned int i;
for (i = PRINT_FS; i < ARRAY_SIZE (targets); i++)
if (strcmp (arg, targets[i]) == 0)
diff --git a/util/grub-rpm-sort.c b/util/grub-rpm-sort.c
index f33bd1ed568..8345944105f 100644
--- a/util/grub-rpm-sort.c
+++ b/util/grub-rpm-sort.c
@@ -232,7 +232,7 @@ main (int argc, char *argv[])
struct arguments arguments;
char **package_names = NULL;
size_t n_package_names = 0;
- int i;
+ unsigned int i;
grub_util_host_init (&argc, &argv);
diff --git a/util/setup.c b/util/setup.c
index 9c1e1b7da6a..b0bb71eaaed 100644
--- a/util/setup.c
+++ b/util/setup.c
@@ -407,7 +407,7 @@ SETUP (const char *dir,
int is_ldm;
grub_err_t err;
grub_disk_addr_t *sectors;
- int i;
+ unsigned int i;
grub_fs_t fs;
unsigned int nsec, maxsec;
diff --git a/grub-core/gnulib/regex.h b/grub-core/gnulib/regex.h
index 854c6edaf75..9e754c637e6 100644
--- a/grub-core/gnulib/regex.h
+++ b/grub-core/gnulib/regex.h
@@ -58,7 +58,7 @@ typedef size_t __re_long_size_t;
/* The traditional GNU regex implementation mishandles strings longer
than INT_MAX. */
-typedef int __re_idx_t;
+typedef unsigned int __re_idx_t;
typedef unsigned int __re_size_t;
typedef unsigned long int __re_long_size_t;
diff --git a/grub-core/gnulib/regex_internal.h b/grub-core/gnulib/regex_internal.h
index c467b290708..c3103844eda 100644
--- a/grub-core/gnulib/regex_internal.h
+++ b/grub-core/gnulib/regex_internal.h
@@ -399,7 +399,7 @@ struct re_string_t
unsigned char offsets_needed;
unsigned char newline_anchor;
unsigned char word_ops_used;
- int mb_cur_max;
+ unsigned int mb_cur_max;
};
typedef struct re_string_t re_string_t;
@@ -691,7 +691,7 @@ struct re_dfa_t
unsigned int is_utf8 : 1;
unsigned int map_notascii : 1;
unsigned int word_ops_used : 1;
- int mb_cur_max;
+ unsigned int mb_cur_max;
bitset_t word_char;
reg_syntax_t syntax;
Idx *subexp_map;

59
0241-Don-t-use-Wno-sign-compare-Wno-conversion-Wno-error-.patch Normal file
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@ -0,0 +1,59 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Tue, 11 Sep 2018 15:59:39 -0400
Subject: [PATCH] Don't use -Wno-sign-compare -Wno-conversion -Wno-error, do
use -Wextra.
Signed-off-by: Peter Jones <pjones@redhat.com>
---
configure.ac | 14 +++++++++++---
conf/Makefile.common | 2 +-
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/configure.ac b/configure.ac
index 61c4683cb76..40fcf567ae7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1396,11 +1396,11 @@ fi
# Set them to their new values for the tests below.
CC="$TARGET_CC"
if test x"$platform" = xemu ; then
-CFLAGS="$TARGET_CFLAGS -Wno-error"
+CFLAGS="$TARGET_CFLAGS"
elif test "x$TARGET_APPLE_LINKER" = x1 ; then
-CFLAGS="$TARGET_CFLAGS -nostdlib -static -Wno-error"
+CFLAGS="$TARGET_CFLAGS -nostdlib -static"
else
-CFLAGS="$TARGET_CFLAGS -nostdlib -Wno-error"
+CFLAGS="$TARGET_CFLAGS -nostdlib"
fi
CPPFLAGS="$TARGET_CPPFLAGS"
@@ -1975,6 +1975,14 @@ if test x"$enable_werror" != xno ; then
HOST_CFLAGS="$HOST_CFLAGS -Werror"
fi
+AC_ARG_ENABLE([wextra],
+ [AS_HELP_STRING([--disable-wextra],
+ [do not use -Wextra when building GRUB])])
+if test x"$enable_wextra" != xno ; then
+ TARGET_CFLAGS="$TARGET_CFLAGS -Wextra"
+ HOST_CFLAGS="$HOST_CFLAGS -Wextra"
+fi
+
TARGET_CPP="$TARGET_CC -E"
TARGET_CCAS=$TARGET_CC
diff --git a/conf/Makefile.common b/conf/Makefile.common
index b93879804c0..0d9910d7875 100644
--- a/conf/Makefile.common
+++ b/conf/Makefile.common
@@ -66,7 +66,7 @@ grubconfdir = $(sysconfdir)/grub.d
platformdir = $(pkglibdir)/$(target_cpu)-$(platform)
starfielddir = $(pkgdatadir)/themes/starfield
-CFLAGS_GNULIB = -Wno-undef -Wno-sign-compare -Wno-unused -Wno-unused-parameter -Wno-redundant-decls -Wno-unreachable-code -Wno-conversion
+CFLAGS_GNULIB = -Wno-undef -Wno-unused -Wno-unused-parameter -Wno-redundant-decls -Wno-unreachable-code
CPPFLAGS_GNULIB = -I$(top_builddir)/grub-core/gnulib -I$(top_srcdir)/grub-core/gnulib
CFLAGS_POSIX = -fno-builtin

33
0242-grub-boot-success.timer-Add-a-few-Conditions-for-run.patch Normal file
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@ -0,0 +1,33 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Mon, 3 Sep 2018 13:01:58 +0200
Subject: [PATCH] grub-boot-success.timer: Add a few Conditions for running the
timer
Add 2 Conditions for running the boot-success timer / service:
1) Do not run it for system users, this fixes errors about gdm not being
allowed to use pkexec when the greeter session lasts for more then 2 minutes:
https://bugzilla.redhat.com/show_bug.cgi?id=1592201#c6
2) Do not run the timer when pkexec is not available (on minimal installs)
since then it will just lead to a bunch of errors without doing anything:
https://bugzilla.redhat.com/show_bug.cgi?id=1619445
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
docs/grub-boot-success.timer | 2 ++
1 file changed, 2 insertions(+)
diff --git a/docs/grub-boot-success.timer b/docs/grub-boot-success.timer
index 221b532781b..67bd829b795 100644
--- a/docs/grub-boot-success.timer
+++ b/docs/grub-boot-success.timer
@@ -1,5 +1,7 @@
[Unit]
Description=Mark boot as successful after the user session has run 2 minutes
+ConditionUser=!@system
+ConditionPathExists=/usr/bin/pkexec
[Timer]
OnActiveSec=2min

3
grub.patches
View File

@ -237,3 +237,6 @@ Patch0236: 0236-Add-a-version-command.patch
Patch0237: 0237-Add-more-dprintf-and-nerf-dprintf-in-script.c.patch
Patch0238: 0238-arm-arm64-loader-Better-memory-allocation-and-error-.patch
Patch0239: 0239-Try-to-pick-better-locations-for-kernel-and-initrd.patch
Patch0240: 0240-Attempt-to-fix-up-all-the-places-Wsign-compare-error.patch
Patch0241: 0241-Don-t-use-Wno-sign-compare-Wno-conversion-Wno-error-.patch
Patch0242: 0242-grub-boot-success.timer-Add-a-few-Conditions-for-run.patch

10
grub2.spec
View File

@ -7,7 +7,7 @@
Name: grub2
Epoch: 1
Version: 2.02
Release: 57%{?dist}
Release: 58%{?dist}
Summary: Bootloader with support for Linux, Multiboot and more
Group: System Environment/Base
License: GPLv3+
@ -498,6 +498,14 @@ fi
%endif
%changelog
* Wed Sep 12 2018 Peter Jones <pjones@redhat.com> - 2.02-58
- Add 2 conditions to boot-success timer and service:
- Don't run it for system users
Resolves: rhbz#1592201
- Don't run it when pkexec isn't available
Resolves: rhbz#1619445
- Use -Wsign-compare -Wconversion -Wextra in the build.
* Tue Sep 11 2018 Peter Jones <pjones@redhat.com> - 2.02-57
- Limit grub_malloc() on x86_64 to < 31bit addresses, as some devices seem to
have a colossally broken storage controller (or UEFI driver) that can't do