diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/flex_array.c | 24 | ||||
| -rw-r--r-- | lib/vsprintf.c | 2 | ||||
| -rw-r--r-- | lib/xz/xz_dec_lzma2.c | 6 |
3 files changed, 22 insertions, 10 deletions
diff --git a/lib/flex_array.c b/lib/flex_array.c index c0ea40ba2082..854b57bd7d9d 100644 --- a/lib/flex_array.c +++ b/lib/flex_array.c @@ -232,10 +232,10 @@ EXPORT_SYMBOL(flex_array_clear); /** * flex_array_prealloc - guarantee that array space exists - * @fa: the flex array for which to preallocate parts - * @start: index of first array element for which space is allocated - * @end: index of last (inclusive) element for which space is allocated - * @flags: page allocation flags + * @fa: the flex array for which to preallocate parts + * @start: index of first array element for which space is allocated + * @nr_elements: number of elements for which space is allocated + * @flags: page allocation flags * * This will guarantee that no future calls to flex_array_put() * will allocate memory. It can be used if you are expecting to @@ -245,14 +245,24 @@ EXPORT_SYMBOL(flex_array_clear); * Locking must be provided by the caller. */ int flex_array_prealloc(struct flex_array *fa, unsigned int start, - unsigned int end, gfp_t flags) + unsigned int nr_elements, gfp_t flags) { int start_part; int end_part; int part_nr; + unsigned int end; struct flex_array_part *part; - if (start >= fa->total_nr_elements || end >= fa->total_nr_elements) + if (!start && !nr_elements) + return 0; + if (start >= fa->total_nr_elements) + return -ENOSPC; + if (!nr_elements) + return 0; + + end = start + nr_elements - 1; + + if (end >= fa->total_nr_elements) return -ENOSPC; if (elements_fit_in_base(fa)) return 0; @@ -343,6 +353,8 @@ int flex_array_shrink(struct flex_array *fa) int part_nr; int ret = 0; + if (!fa->total_nr_elements) + return 0; if (elements_fit_in_base(fa)) return ret; for (part_nr = 0; part_nr < FLEX_ARRAY_NR_BASE_PTRS; part_nr++) { diff --git a/lib/vsprintf.c b/lib/vsprintf.c index bc0ac6b333dc..dfd60192bc2e 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -797,7 +797,7 @@ char *uuid_string(char *buf, char *end, const u8 *addr, return string(buf, end, uuid, spec); } -int kptr_restrict = 1; +int kptr_restrict __read_mostly; /* * Show a '%p' thing. A kernel extension is that the '%p' is followed diff --git a/lib/xz/xz_dec_lzma2.c b/lib/xz/xz_dec_lzma2.c index ea5fa4fe9d67..a6cdc969ea42 100644 --- a/lib/xz/xz_dec_lzma2.c +++ b/lib/xz/xz_dec_lzma2.c @@ -969,6 +969,9 @@ XZ_EXTERN enum xz_ret xz_dec_lzma2_run(struct xz_dec_lzma2 *s, */ tmp = b->in[b->in_pos++]; + if (tmp == 0x00) + return XZ_STREAM_END; + if (tmp >= 0xE0 || tmp == 0x01) { s->lzma2.need_props = true; s->lzma2.need_dict_reset = false; @@ -1001,9 +1004,6 @@ XZ_EXTERN enum xz_ret xz_dec_lzma2_run(struct xz_dec_lzma2 *s, lzma_reset(s); } } else { - if (tmp == 0x00) - return XZ_STREAM_END; - if (tmp > 0x02) return XZ_DATA_ERROR; |