diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 11 | ||||
| -rw-r--r-- | lib/Kconfig.kcsan | 2 | ||||
| -rw-r--r-- | lib/kunit/string-stream.c | 4 | ||||
| -rw-r--r-- | lib/lockref.c | 1 | ||||
| -rw-r--r-- | lib/memcpy_kunit.c | 2 | ||||
| -rw-r--r-- | lib/nlattr.c | 3 | ||||
| -rw-r--r-- | lib/scatterlist.c | 25 | ||||
| -rw-r--r-- | lib/win_minmax.c | 2 |
8 files changed, 35 insertions, 15 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 881c3f84e88a..61a9425a311f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1917,7 +1917,7 @@ config FUNCTION_ERROR_INJECTION help Add fault injections into various functions that are annotated with ALLOW_ERROR_INJECTION() in the kernel. BPF may also modify the return - value of theses functions. This is useful to test error paths of code. + value of these functions. This is useful to test error paths of code. If unsure, say N @@ -2566,6 +2566,15 @@ config MEMCPY_KUNIT_TEST If unsure, say N. +config MEMCPY_SLOW_KUNIT_TEST + bool "Include exhaustive memcpy tests" + depends on MEMCPY_KUNIT_TEST + default y + help + Some memcpy tests are quite exhaustive in checking for overlaps + and bit ranges. These can be very slow, so they are split out + as a separate config, in case they need to be disabled. + config IS_SIGNED_TYPE_KUNIT_TEST tristate "Test is_signed_type() macro" if !KUNIT_ALL_TESTS depends on KUNIT diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan index 375575a5a0e3..4dedd61e5192 100644 --- a/lib/Kconfig.kcsan +++ b/lib/Kconfig.kcsan @@ -194,7 +194,7 @@ config KCSAN_WEAK_MEMORY Enable support for modeling a subset of weak memory, which allows detecting a subset of data races due to missing memory barriers. - Depends on KCSAN_STRICT, because the options strenghtening certain + Depends on KCSAN_STRICT, because the options strengthening certain plain accesses by default (depending on !KCSAN_STRICT) reduce the ability to detect any data races invoving reordered accesses, in particular reordered writes. diff --git a/lib/kunit/string-stream.c b/lib/kunit/string-stream.c index f5f51166d8c2..cc32743c1171 100644 --- a/lib/kunit/string-stream.c +++ b/lib/kunit/string-stream.c @@ -23,8 +23,10 @@ static struct string_stream_fragment *alloc_string_stream_fragment( return ERR_PTR(-ENOMEM); frag->fragment = kunit_kmalloc(test, len, gfp); - if (!frag->fragment) + if (!frag->fragment) { + kunit_kfree(test, frag); return ERR_PTR(-ENOMEM); + } return frag; } diff --git a/lib/lockref.c b/lib/lockref.c index 45e93ece8ba0..2afe4c5d8919 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -23,7 +23,6 @@ } \ if (!--retry) \ break; \ - cpu_relax(); \ } \ } while (0) diff --git a/lib/memcpy_kunit.c b/lib/memcpy_kunit.c index 89128551448d..887926f04731 100644 --- a/lib/memcpy_kunit.c +++ b/lib/memcpy_kunit.c @@ -309,6 +309,8 @@ static void set_random_nonzero(struct kunit *test, u8 *byte) static void init_large(struct kunit *test) { + if (!IS_ENABLED(CONFIG_MEMCPY_SLOW_KUNIT_TEST)) + kunit_skip(test, "Slow test skipped. Enable with CONFIG_MEMCPY_SLOW_KUNIT_TEST=y"); /* Get many bit patterns. */ get_random_bytes(large_src, ARRAY_SIZE(large_src)); diff --git a/lib/nlattr.c b/lib/nlattr.c index 9055e8b4d144..489e15bde5c1 100644 --- a/lib/nlattr.c +++ b/lib/nlattr.c @@ -10,6 +10,7 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/jiffies.h> +#include <linux/nospec.h> #include <linux/skbuff.h> #include <linux/string.h> #include <linux/types.h> @@ -381,6 +382,7 @@ static int validate_nla(const struct nlattr *nla, int maxtype, if (type <= 0 || type > maxtype) return 0; + type = array_index_nospec(type, maxtype + 1); pt = &policy[type]; BUG_ON(pt->type > NLA_TYPE_MAX); @@ -596,6 +598,7 @@ static int __nla_validate_parse(const struct nlattr *head, int len, int maxtype, } continue; } + type = array_index_nospec(type, maxtype + 1); if (policy) { int err = validate_nla(nla, maxtype, policy, validate, extack, depth); diff --git a/lib/scatterlist.c b/lib/scatterlist.c index a0ad2a7959b5..8d7519a8f308 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -470,22 +470,27 @@ int sg_alloc_append_table_from_pages(struct sg_append_table *sgt_append, return -EOPNOTSUPP; if (sgt_append->prv) { + unsigned long next_pfn = (page_to_phys(sg_page(sgt_append->prv)) + + sgt_append->prv->offset + sgt_append->prv->length) / PAGE_SIZE; + if (WARN_ON(offset)) return -EINVAL; /* Merge contiguous pages into the last SG */ prv_len = sgt_append->prv->length; - last_pg = sg_page(sgt_append->prv); - while (n_pages && pages_are_mergeable(last_pg, pages[0])) { - if (sgt_append->prv->length + PAGE_SIZE > max_segment) - break; - sgt_append->prv->length += PAGE_SIZE; - last_pg = pages[0]; - pages++; - n_pages--; + if (page_to_pfn(pages[0]) == next_pfn) { + last_pg = pfn_to_page(next_pfn - 1); + while (n_pages && pages_are_mergeable(pages[0], last_pg)) { + if (sgt_append->prv->length + PAGE_SIZE > max_segment) + break; + sgt_append->prv->length += PAGE_SIZE; + last_pg = pages[0]; + pages++; + n_pages--; + } + if (!n_pages) + goto out; } - if (!n_pages) - goto out; } /* compute number of contiguous chunks */ diff --git a/lib/win_minmax.c b/lib/win_minmax.c index 6bdc1cd15f76..ec10506834b6 100644 --- a/lib/win_minmax.c +++ b/lib/win_minmax.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/** +/* * lib/minmax.c: windowed min/max tracker * * Kathleen Nichols' algorithm for tracking the minimum (or maximum) |