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authorLinus Torvalds <torvalds@linux-foundation.org>2023-06-28 06:24:18 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2023-06-28 06:24:18 +0200
commit582c161cf38cf016cd573af6f087fa5fa786949b (patch)
tree6ae83fe4acfc54fc962ac2fbc15f56746b54d528 /drivers/md
parentMerge tag 'pstore-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff)
parentnetfilter: ipset: Replace strlcpy with strscpy (diff)
downloadlinux-582c161cf38cf016cd573af6f087fa5fa786949b.tar.xz
linux-582c161cf38cf016cd573af6f087fa5fa786949b.zip
Merge tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook: "There are three areas of note: A bunch of strlcpy()->strscpy() conversions ended up living in my tree since they were either Acked by maintainers for me to carry, or got ignored for multiple weeks (and were trivial changes). The compiler option '-fstrict-flex-arrays=3' has been enabled globally, and has been in -next for the entire devel cycle. This changes compiler diagnostics (though mainly just -Warray-bounds which is disabled) and potential UBSAN_BOUNDS and FORTIFY _warning_ coverage. In other words, there are no new restrictions, just potentially new warnings. Any new FORTIFY warnings we've seen have been fixed (usually in their respective subsystem trees). For more details, see commit df8fc4e934c12b. The under-development compiler attribute __counted_by has been added so that we can start annotating flexible array members with their associated structure member that tracks the count of flexible array elements at run-time. It is possible (likely?) that the exact syntax of the attribute will change before it is finalized, but GCC and Clang are working together to sort it out. Any changes can be made to the macro while we continue to add annotations. As an example of that last case, I have a treewide commit waiting with such annotations found via Coccinelle: https://git.kernel.org/linus/adc5b3cb48a049563dc673f348eab7b6beba8a9b Also see commit dd06e72e68bcb4 for more details. Summary: - Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko) - Convert strreplace() to return string start (Andy Shevchenko) - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook) - Add missing function prototypes seen with W=1 (Arnd Bergmann) - Fix strscpy() kerndoc typo (Arne Welzel) - Replace strlcpy() with strscpy() across many subsystems which were either Acked by respective maintainers or were trivial changes that went ignored for multiple weeks (Azeem Shaikh) - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers) - Add KUnit tests for strcat()-family - Enable KUnit tests of FORTIFY wrappers under UML - Add more complete FORTIFY protections for strlcat() - Add missed disabling of FORTIFY for all arch purgatories. - Enable -fstrict-flex-arrays=3 globally - Tightening UBSAN_BOUNDS when using GCC - Improve checkpatch to check for strcpy, strncpy, and fake flex arrays - Improve use of const variables in FORTIFY - Add requested struct_size_t() helper for types not pointers - Add __counted_by macro for annotating flexible array size members" * tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (54 commits) netfilter: ipset: Replace strlcpy with strscpy uml: Replace strlcpy with strscpy um: Use HOST_DIR for mrproper kallsyms: Replace all non-returning strlcpy with strscpy sh: Replace all non-returning strlcpy with strscpy of/flattree: Replace all non-returning strlcpy with strscpy sparc64: Replace all non-returning strlcpy with strscpy Hexagon: Replace all non-returning strlcpy with strscpy kobject: Use return value of strreplace() lib/string_helpers: Change returned value of the strreplace() jbd2: Avoid printing outside the boundary of the buffer checkpatch: Check for 0-length and 1-element arrays riscv/purgatory: Do not use fortified string functions s390/purgatory: Do not use fortified string functions x86/purgatory: Do not use fortified string functions acpi: Replace struct acpi_table_slit 1-element array with flex-array clocksource: Replace all non-returning strlcpy with strscpy string: use __builtin_memcpy() in strlcpy/strlcat staging: most: Replace all non-returning strlcpy with strscpy drm/i2c: tda998x: Replace all non-returning strlcpy with strscpy ...
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/raid5.c4
-rw-r--r--drivers/md/raid5.h2
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 6615abf54d3f..85b3004594e0 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -2433,7 +2433,7 @@ static int grow_stripes(struct r5conf *conf, int num)
conf->active_name = 0;
sc = kmem_cache_create(conf->cache_name[conf->active_name],
- sizeof(struct stripe_head)+(devs-1)*sizeof(struct r5dev),
+ struct_size_t(struct stripe_head, dev, devs),
0, 0, NULL);
if (!sc)
return 1;
@@ -2559,7 +2559,7 @@ static int resize_stripes(struct r5conf *conf, int newsize)
/* Step 1 */
sc = kmem_cache_create(conf->cache_name[1-conf->active_name],
- sizeof(struct stripe_head)+(newsize-1)*sizeof(struct r5dev),
+ struct_size_t(struct stripe_head, dev, newsize),
0, 0, NULL);
if (!sc)
return -ENOMEM;
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index f19707189a7b..97a795979a35 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -268,7 +268,7 @@ struct stripe_head {
unsigned long flags;
u32 log_checksum;
unsigned short write_hint;
- } dev[1]; /* allocated with extra space depending of RAID geometry */
+ } dev[]; /* allocated depending of RAID geometry ("disks" member) */
};
/* stripe_head_state - collects and tracks the dynamic state of a stripe_head