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-rw-r--r--lib/Kconfig.debug12
-rw-r--r--lib/decompress_bunzip2.c6
-rw-r--r--lib/decompress_unlz4.c8
-rw-r--r--lib/decompress_unlzo.c3
-rw-r--r--lib/decompress_unxz.c2
-rw-r--r--lib/decompress_unzstd.c4
-rw-r--r--lib/kstrtox.c5
-rw-r--r--lib/lz4/lz4_decompress.c2
-rw-r--r--lib/math/Makefile1
-rw-r--r--lib/math/rational-test.c56
-rw-r--r--lib/math/rational.c16
-rw-r--r--lib/mpi/longlong.h4
-rw-r--r--lib/mpi/mpicoder.c6
-rw-r--r--lib/mpi/mpiutil.c2
-rw-r--r--lib/parser.c1
-rw-r--r--lib/string.c2
-rw-r--r--lib/string_helpers.c102
-rw-r--r--lib/test-string_helpers.c157
-rw-r--r--lib/test_hmm.c127
-rw-r--r--lib/test_hmm_uapi.h2
-rw-r--r--lib/test_string.c5
-rw-r--r--lib/vsprintf.c1
-rw-r--r--lib/xz/xz_dec_bcj.c2
-rw-r--r--lib/xz/xz_dec_lzma2.c8
-rw-r--r--lib/zlib_inflate/inffast.c2
-rw-r--r--lib/zstd/huf.h2
26 files changed, 450 insertions, 88 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1c9857fdb1a0..ae62debfd8bf 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2446,6 +2446,18 @@ config SLUB_KUNIT_TEST
If unsure, say N.
+config RATIONAL_KUNIT_TEST
+ tristate "KUnit test for rational.c" if !KUNIT_ALL_TESTS
+ depends on KUNIT
+ select RATIONAL
+ default KUNIT_ALL_TESTS
+ help
+ This builds the rational math unit test.
+ For more information on KUnit and unit tests in general please refer
+ to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+ If unsure, say N.
+
config TEST_UDELAY
tristate "udelay test driver"
help
diff --git a/lib/decompress_bunzip2.c b/lib/decompress_bunzip2.c
index c72c865032fa..3518e7394eca 100644
--- a/lib/decompress_bunzip2.c
+++ b/lib/decompress_bunzip2.c
@@ -80,7 +80,7 @@
/* This is what we know about each Huffman coding group */
struct group_data {
- /* We have an extra slot at the end of limit[] for a sentinal value. */
+ /* We have an extra slot at the end of limit[] for a sentinel value. */
int limit[MAX_HUFCODE_BITS+1];
int base[MAX_HUFCODE_BITS];
int permute[MAX_SYMBOLS];
@@ -337,7 +337,7 @@ static int INIT get_next_block(struct bunzip_data *bd)
pp <<= 1;
base[i+1] = pp-(t += temp[i]);
}
- limit[maxLen+1] = INT_MAX; /* Sentinal value for
+ limit[maxLen+1] = INT_MAX; /* Sentinel value for
* reading next sym. */
limit[maxLen] = pp+temp[maxLen]-1;
base[minLen] = 0;
@@ -385,7 +385,7 @@ static int INIT get_next_block(struct bunzip_data *bd)
bd->inbufBits =
(bd->inbufBits << 8)|bd->inbuf[bd->inbufPos++];
bd->inbufBitCount += 8;
- };
+ }
bd->inbufBitCount -= hufGroup->maxLen;
j = (bd->inbufBits >> bd->inbufBitCount)&
((1 << hufGroup->maxLen)-1);
diff --git a/lib/decompress_unlz4.c b/lib/decompress_unlz4.c
index c0cfcfd486be..e6327391b6b6 100644
--- a/lib/decompress_unlz4.c
+++ b/lib/decompress_unlz4.c
@@ -112,6 +112,9 @@ STATIC inline int INIT unlz4(u8 *input, long in_len,
error("data corrupted");
goto exit_2;
}
+ } else if (size < 4) {
+ /* empty or end-of-file */
+ goto exit_3;
}
chunksize = get_unaligned_le32(inp);
@@ -125,6 +128,10 @@ STATIC inline int INIT unlz4(u8 *input, long in_len,
continue;
}
+ if (!fill && chunksize == 0) {
+ /* empty or end-of-file */
+ goto exit_3;
+ }
if (posp)
*posp += 4;
@@ -184,6 +191,7 @@ STATIC inline int INIT unlz4(u8 *input, long in_len,
}
}
+exit_3:
ret = 0;
exit_2:
if (!input)
diff --git a/lib/decompress_unlzo.c b/lib/decompress_unlzo.c
index 1f439a622076..64c1358500ce 100644
--- a/lib/decompress_unlzo.c
+++ b/lib/decompress_unlzo.c
@@ -43,7 +43,6 @@ STATIC inline long INIT parse_header(u8 *input, long *skip, long in_len)
int l;
u8 *parse = input;
u8 *end = input + in_len;
- u8 level = 0;
u16 version;
/*
@@ -65,7 +64,7 @@ STATIC inline long INIT parse_header(u8 *input, long *skip, long in_len)
version = get_unaligned_be16(parse);
parse += 7;
if (version >= 0x0940)
- level = *parse++;
+ parse++;
if (get_unaligned_be32(parse) & HEADER_HAS_FILTER)
parse += 8; /* flags + filter info */
else
diff --git a/lib/decompress_unxz.c b/lib/decompress_unxz.c
index 25d59a95bd66..a2f38e23004a 100644
--- a/lib/decompress_unxz.c
+++ b/lib/decompress_unxz.c
@@ -23,7 +23,7 @@
* uncompressible. Thus, we must look for worst-case expansion when the
* compressor is encoding uncompressible data.
*
- * The structure of the .xz file in case of a compresed kernel is as follows.
+ * The structure of the .xz file in case of a compressed kernel is as follows.
* Sizes (as bytes) of the fields are in parenthesis.
*
* Stream Header (12)
diff --git a/lib/decompress_unzstd.c b/lib/decompress_unzstd.c
index 790abc472f5b..6b629ab31c1e 100644
--- a/lib/decompress_unzstd.c
+++ b/lib/decompress_unzstd.c
@@ -16,7 +16,7 @@
* uncompressible. Thus, we must look for worst-case expansion when the
* compressor is encoding uncompressible data.
*
- * The structure of the .zst file in case of a compresed kernel is as follows.
+ * The structure of the .zst file in case of a compressed kernel is as follows.
* Maximum sizes (as bytes) of the fields are in parenthesis.
*
* Frame Header: (18)
@@ -56,7 +56,7 @@
/*
* Preboot environments #include "path/to/decompress_unzstd.c".
* All of the source files we depend on must be #included.
- * zstd's only source dependeny is xxhash, which has no source
+ * zstd's only source dependency is xxhash, which has no source
* dependencies.
*
* When UNZSTD_PREBOOT is defined we declare __decompress(), which is
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index 0b5fe8b41173..059b8b00dc53 100644
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -14,11 +14,12 @@
*/
#include <linux/ctype.h>
#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/math64.h>
#include <linux/export.h>
+#include <linux/kstrtox.h>
+#include <linux/math64.h>
#include <linux/types.h>
#include <linux/uaccess.h>
+
#include "kstrtox.h"
const char *_parse_integer_fixup_radix(const char *s, unsigned int *base)
diff --git a/lib/lz4/lz4_decompress.c b/lib/lz4/lz4_decompress.c
index 8a7724a6ce2f..926f4823d5ea 100644
--- a/lib/lz4/lz4_decompress.c
+++ b/lib/lz4/lz4_decompress.c
@@ -481,7 +481,7 @@ int LZ4_decompress_fast(const char *source, char *dest, int originalSize)
/* ===== Instantiate a few more decoding cases, used more than once. ===== */
-int LZ4_decompress_safe_withPrefix64k(const char *source, char *dest,
+static int LZ4_decompress_safe_withPrefix64k(const char *source, char *dest,
int compressedSize, int maxOutputSize)
{
return LZ4_decompress_generic(source, dest,
diff --git a/lib/math/Makefile b/lib/math/Makefile
index 7456edb864fc..bfac26ddfc22 100644
--- a/lib/math/Makefile
+++ b/lib/math/Makefile
@@ -6,3 +6,4 @@ obj-$(CONFIG_PRIME_NUMBERS) += prime_numbers.o
obj-$(CONFIG_RATIONAL) += rational.o
obj-$(CONFIG_TEST_DIV64) += test_div64.o
+obj-$(CONFIG_RATIONAL_KUNIT_TEST) += rational-test.o
diff --git a/lib/math/rational-test.c b/lib/math/rational-test.c
new file mode 100644
index 000000000000..01611ddff420
--- /dev/null
+++ b/lib/math/rational-test.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <kunit/test.h>
+
+#include <linux/rational.h>
+
+struct rational_test_param {
+ unsigned long num, den;
+ unsigned long max_num, max_den;
+ unsigned long exp_num, exp_den;
+
+ const char *name;
+};
+
+static const struct rational_test_param test_parameters[] = {
+ { 1230, 10, 100, 20, 100, 1, "Exceeds bounds, semi-convergent term > 1/2 last term" },
+ { 34567,100, 120, 20, 120, 1, "Exceeds bounds, semi-convergent term < 1/2 last term" },
+ { 1, 30, 100, 10, 0, 1, "Closest to zero" },
+ { 1, 19, 100, 10, 1, 10, "Closest to smallest non-zero" },
+ { 27,32, 16, 16, 11, 13, "Use convergent" },
+ { 1155, 7735, 255, 255, 33, 221, "Exact answer" },
+ { 87, 32, 70, 32, 68, 25, "Semiconvergent, numerator limit" },
+ { 14533, 4626, 15000, 2400, 7433, 2366, "Semiconvergent, denominator limit" },
+};
+
+static void get_desc(const struct rational_test_param *param, char *desc)
+{
+ strscpy(desc, param->name, KUNIT_PARAM_DESC_SIZE);
+}
+
+/* Creates function rational_gen_params */
+KUNIT_ARRAY_PARAM(rational, test_parameters, get_desc);
+
+static void rational_test(struct kunit *test)
+{
+ const struct rational_test_param *param = (const struct rational_test_param *)test->param_value;
+ unsigned long n = 0, d = 0;
+
+ rational_best_approximation(param->num, param->den, param->max_num, param->max_den, &n, &d);
+ KUNIT_EXPECT_EQ(test, n, param->exp_num);
+ KUNIT_EXPECT_EQ(test, d, param->exp_den);
+}
+
+static struct kunit_case rational_test_cases[] = {
+ KUNIT_CASE_PARAM(rational_test, rational_gen_params),
+ {}
+};
+
+static struct kunit_suite rational_test_suite = {
+ .name = "rational",
+ .test_cases = rational_test_cases,
+};
+
+kunit_test_suites(&rational_test_suite);
+
+MODULE_LICENSE("GPL v2");
diff --git a/lib/math/rational.c b/lib/math/rational.c
index 9781d521963d..c0ab51d8fbb9 100644
--- a/lib/math/rational.c
+++ b/lib/math/rational.c
@@ -12,6 +12,7 @@
#include <linux/compiler.h>
#include <linux/export.h>
#include <linux/minmax.h>
+#include <linux/limits.h>
/*
* calculate best rational approximation for a given fraction
@@ -78,13 +79,18 @@ void rational_best_approximation(
* found below as 't'.
*/
if ((n2 > max_numerator) || (d2 > max_denominator)) {
- unsigned long t = min((max_numerator - n0) / n1,
- (max_denominator - d0) / d1);
+ unsigned long t = ULONG_MAX;
- /* This tests if the semi-convergent is closer
- * than the previous convergent.
+ if (d1)
+ t = (max_denominator - d0) / d1;
+ if (n1)
+ t = min(t, (max_numerator - n0) / n1);
+
+ /* This tests if the semi-convergent is closer than the previous
+ * convergent. If d1 is zero there is no previous convergent as this
+ * is the 1st iteration, so always choose the semi-convergent.
*/
- if (2u * t > a || (2u * t == a && d0 * dp > d1 * d)) {
+ if (!d1 || 2u * t > a || (2u * t == a && d0 * dp > d1 * d)) {
n1 = n0 + t * n1;
d1 = d0 + t * d1;
}
diff --git a/lib/mpi/longlong.h b/lib/mpi/longlong.h
index afbd99987cf8..b6fa1d08fb55 100644
--- a/lib/mpi/longlong.h
+++ b/lib/mpi/longlong.h
@@ -48,8 +48,8 @@
/* Define auxiliary asm macros.
*
- * 1) umul_ppmm(high_prod, low_prod, multipler, multiplicand) multiplies two
- * UWtype integers MULTIPLER and MULTIPLICAND, and generates a two UWtype
+ * 1) umul_ppmm(high_prod, low_prod, multiplier, multiplicand) multiplies two
+ * UWtype integers MULTIPLIER and MULTIPLICAND, and generates a two UWtype
* word product in HIGH_PROD and LOW_PROD.
*
* 2) __umulsidi3(a,b) multiplies two UWtype integers A and B, and returns a
diff --git a/lib/mpi/mpicoder.c b/lib/mpi/mpicoder.c
index 7ea225b2204f..39c4c6731094 100644
--- a/lib/mpi/mpicoder.c
+++ b/lib/mpi/mpicoder.c
@@ -234,11 +234,11 @@ static int count_lzeros(MPI a)
}
/**
- * mpi_read_buffer() - read MPI to a bufer provided by user (msb first)
+ * mpi_read_buffer() - read MPI to a buffer provided by user (msb first)
*
* @a: a multi precision integer
- * @buf: bufer to which the output will be written to. Needs to be at
- * leaset mpi_get_size(a) long.
+ * @buf: buffer to which the output will be written to. Needs to be at
+ * least mpi_get_size(a) long.
* @buf_len: size of the buf.
* @nbytes: receives the actual length of the data written on success and
* the data to-be-written on -EOVERFLOW in case buf_len was too
diff --git a/lib/mpi/mpiutil.c b/lib/mpi/mpiutil.c
index 3c63710c20c6..9a75ca3f7edf 100644
--- a/lib/mpi/mpiutil.c
+++ b/lib/mpi/mpiutil.c
@@ -80,7 +80,7 @@ EXPORT_SYMBOL_GPL(mpi_const);
/****************
* Note: It was a bad idea to use the number of limbs to allocate
* because on a alpha the limbs are large but we normally need
- * integers of n bits - So we should chnage this to bits (or bytes).
+ * integers of n bits - So we should change this to bits (or bytes).
*
* But mpi_alloc is used in a lot of places :-)
*/
diff --git a/lib/parser.c b/lib/parser.c
index f1a6d90b8c34..bcb23484100e 100644
--- a/lib/parser.c
+++ b/lib/parser.c
@@ -6,6 +6,7 @@
#include <linux/ctype.h>
#include <linux/types.h>
#include <linux/export.h>
+#include <linux/kstrtox.h>
#include <linux/parser.h>
#include <linux/slab.h>
#include <linux/string.h>
diff --git a/lib/string.c b/lib/string.c
index 7548eb715ddb..77bd0b1d3296 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -977,7 +977,7 @@ void *memscan(void *addr, int c, size_t size)
unsigned char *p = addr;
while (size) {
- if (*p == c)
+ if (*p == (unsigned char)c)
return (void *)p;
p++;
size--;
diff --git a/lib/string_helpers.c b/lib/string_helpers.c
index 7f2d5fbaf243..5a35c7e16e96 100644
--- a/lib/string_helpers.c
+++ b/lib/string_helpers.c
@@ -452,18 +452,20 @@ static bool escape_hex(unsigned char c, char **dst, char *end)
* The process of escaping byte buffer includes several parts. They are applied
* in the following sequence.
*
- * 1. The character is matched to the printable class, if asked, and in
- * case of match it passes through to the output.
- * 2. The character is not matched to the one from @only string and thus
+ * 1. The character is not matched to the one from @only string and thus
* must go as-is to the output.
- * 3. The character is checked if it falls into the class given by @flags.
+ * 2. The character is matched to the printable and ASCII classes, if asked,
+ * and in case of match it passes through to the output.
+ * 3. The character is matched to the printable or ASCII class, if asked,
+ * and in case of match it passes through to the output.
+ * 4. The character is checked if it falls into the class given by @flags.
* %ESCAPE_OCTAL and %ESCAPE_HEX are going last since they cover any
* character. Note that they actually can't go together, otherwise
* %ESCAPE_HEX will be ignored.
*
* Caller must provide valid source and destination pointers. Be aware that
* destination buffer will not be NULL-terminated, thus caller have to append
- * it if needs. The supported flags are::
+ * it if needs. The supported flags are::
*
* %ESCAPE_SPACE: (special white space, not space itself)
* '\f' - form feed
@@ -482,11 +484,27 @@ static bool escape_hex(unsigned char c, char **dst, char *end)
* %ESCAPE_ANY:
* all previous together
* %ESCAPE_NP:
- * escape only non-printable characters (checked by isprint)
+ * escape only non-printable characters, checked by isprint()
* %ESCAPE_ANY_NP:
* all previous together
* %ESCAPE_HEX:
* '\xHH' - byte with hexadecimal value HH (2 digits)
+ * %ESCAPE_NA:
+ * escape only non-ascii characters, checked by isascii()
+ * %ESCAPE_NAP:
+ * escape only non-printable or non-ascii characters
+ * %ESCAPE_APPEND:
+ * append characters from @only to be escaped by the given classes
+ *
+ * %ESCAPE_APPEND would help to pass additional characters to the escaped, when
+ * one of %ESCAPE_NP, %ESCAPE_NA, or %ESCAPE_NAP is provided.
+ *
+ * One notable caveat, the %ESCAPE_NAP, %ESCAPE_NP and %ESCAPE_NA have the
+ * higher priority than the rest of the flags (%ESCAPE_NAP is the highest).
+ * It doesn't make much sense to use either of them without %ESCAPE_OCTAL
+ * or %ESCAPE_HEX, because they cover most of the other character classes.
+ * %ESCAPE_NAP can utilize %ESCAPE_SPACE or %ESCAPE_SPECIAL in addition to
+ * the above.
*
* Return:
* The total size of the escaped output that would be generated for
@@ -500,67 +518,69 @@ int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz,
char *p = dst;
char *end = p + osz;
bool is_dict = only && *only;
+ bool is_append = flags & ESCAPE_APPEND;
while (isz--) {
unsigned char c = *src++;
+ bool in_dict = is_dict && strchr(only, c);
/*
* Apply rules in the following sequence:
- * - the character is printable, when @flags has
- * %ESCAPE_NP bit set
* - the @only string is supplied and does not contain a
* character under question
+ * - the character is printable and ASCII, when @flags has
+ * %ESCAPE_NAP bit set
+ * - the character is printable, when @flags has
+ * %ESCAPE_NP bit set
+ * - the character is ASCII, when @flags has
+ * %ESCAPE_NA bit set
* - the character doesn't fall into a class of symbols
* defined by given @flags
* In these cases we just pass through a character to the
* output buffer.
+ *
+ * When %ESCAPE_APPEND is passed, the characters from @only
+ * have been excluded from the %ESCAPE_NAP, %ESCAPE_NP, and
+ * %ESCAPE_NA cases.
*/
- if ((flags & ESCAPE_NP && isprint(c)) ||
- (is_dict && !strchr(only, c))) {
- /* do nothing */
- } else {
- if (flags & ESCAPE_SPACE && escape_space(c, &p, end))
- continue;
+ if (!(is_append || in_dict) && is_dict &&
+ escape_passthrough(c, &p, end))
+ continue;
- if (flags & ESCAPE_SPECIAL && escape_special(c, &p, end))
- continue;
+ if (!(is_append && in_dict) && isascii(c) && isprint(c) &&
+ flags & ESCAPE_NAP && escape_passthrough(c, &p, end))
+ continue;
- if (flags & ESCAPE_NULL && escape_null(c, &p, end))
- continue;
+ if (!(is_append && in_dict) && isprint(c) &&
+ flags & ESCAPE_NP && escape_passthrough(c, &p, end))
+ continue;
- /* ESCAPE_OCTAL and ESCAPE_HEX always go last */
- if (flags & ESCAPE_OCTAL && escape_octal(c, &p, end))
- continue;
+ if (!(is_append && in_dict) && isascii(c) &&
+ flags & ESCAPE_NA && escape_passthrough(c, &p, end))
+ continue;
- if (flags & ESCAPE_HEX && escape_hex(c, &p, end))
- continue;
- }
+ if (flags & ESCAPE_SPACE && escape_space(c, &p, end))
+ continue;
- escape_passthrough(c, &p, end);
- }
+ if (flags & ESCAPE_SPECIAL && escape_special(c, &p, end))
+ continue;
- return p - dst;
-}
-EXPORT_SYMBOL(string_escape_mem);
+ if (flags & ESCAPE_NULL && escape_null(c, &p, end))
+ continue;
-int string_escape_mem_ascii(const char *src, size_t isz, char *dst,
- size_t osz)
-{
- char *p = dst;
- char *end = p + osz;
+ /* ESCAPE_OCTAL and ESCAPE_HEX always go last */
+ if (flags & ESCAPE_OCTAL && escape_octal(c, &p, end))
+ continue;
- while (isz--) {
- unsigned char c = *src++;
+ if (flags & ESCAPE_HEX && escape_hex(c, &p, end))
+ continue;
- if (!isprint(c) || !isascii(c) || c == '"' || c == '\\')
- escape_hex(c, &p, end);
- else
- escape_passthrough(c, &p, end);
+ escape_passthrough(c, &p, end);
}
return p - dst;
}
-EXPORT_SYMBOL(string_escape_mem_ascii);
+EXPORT_SYMBOL(string_escape_mem);
/*
* Return an allocated string that has been escaped of special characters
diff --git a/lib/test-string_helpers.c b/lib/test-string_helpers.c
index 10360d4ea273..2185d71704f0 100644
--- a/lib/test-string_helpers.c
+++ b/lib/test-string_helpers.c
@@ -19,7 +19,7 @@ static __init bool test_string_check_buf(const char *name, unsigned int flags,
if (q_real == q_test && !memcmp(out_test, out_real, q_test))
return true;
- pr_warn("Test '%s' failed: flags = %u\n", name, flags);
+ pr_warn("Test '%s' failed: flags = %#x\n", name, flags);
print_hex_dump(KERN_WARNING, "Input: ", DUMP_PREFIX_NONE, 16, 1,
in, p, true);
@@ -136,7 +136,7 @@ static const struct test_string_2 escape0[] __initconst = {{
.flags = ESCAPE_SPACE | ESCAPE_HEX,
},{
/* terminator */
- }},
+ }}
},{
.in = "\\h\\\"\a\e\\",
.s1 = {{
@@ -150,7 +150,7 @@ static const struct test_string_2 escape0[] __initconst = {{
.flags = ESCAPE_SPECIAL | ESCAPE_HEX,
},{
/* terminator */
- }},
+ }}
},{
.in = "\eb \\C\007\"\x90\r]",
.s1 = {{
@@ -201,12 +201,26 @@ static const struct test_string_2 escape0[] __initconst = {{
.flags = ESCAPE_NP | ESCAPE_HEX,
},{
/* terminator */
- }},
+ }}
+},{
+ .in = "\007 \eb\"\x90\xCF\r",
+ .s1 = {{
+ .out = "\007 \eb\"\\220\\317\r",
+ .flags = ESCAPE_OCTAL | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\\x90\\xcf\r",
+ .flags = ESCAPE_HEX | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\xCF\r",
+ .flags = ESCAPE_NA,
+ },{
+ /* terminator */
+ }}
},{
/* terminator */
}};
-#define TEST_STRING_2_DICT_1 "b\\ \t\r"
+#define TEST_STRING_2_DICT_1 "b\\ \t\r\xCF"
static const struct test_string_2 escape1[] __initconst = {{
.in = "\f\\ \n\r\t\v",
.s1 = {{
@@ -216,16 +230,40 @@ static const struct test_string_2 escape1[] __initconst = {{
.out = "\f\\x5c\\x20\n\\x0d\\x09\v",
.flags = ESCAPE_HEX,
},{
+ .out = "\f\\134\\040\n\\015\\011\v",
+ .flags = ESCAPE_ANY | ESCAPE_APPEND,
+ },{
+ .out = "\\014\\134\\040\\012\\015\\011\\013",
+ .flags = ESCAPE_OCTAL | ESCAPE_APPEND | ESCAPE_NAP,
+ },{
+ .out = "\\x0c\\x5c\\x20\\x0a\\x0d\\x09\\x0b",
+ .flags = ESCAPE_HEX | ESCAPE_APPEND | ESCAPE_NAP,
+ },{
+ .out = "\f\\134\\040\n\\015\\011\v",
+ .flags = ESCAPE_OCTAL | ESCAPE_APPEND | ESCAPE_NA,
+ },{
+ .out = "\f\\x5c\\x20\n\\x0d\\x09\v",
+ .flags = ESCAPE_HEX | ESCAPE_APPEND | ESCAPE_NA,
+ },{
/* terminator */
- }},
+ }}
},{
- .in = "\\h\\\"\a\e\\",
+ .in = "\\h\\\"\a\xCF\e\\",
.s1 = {{
- .out = "\\134h\\134\"\a\e\\134",
+ .out = "\\134h\\134\"\a\\317\e\\134",
.flags = ESCAPE_OCTAL,
},{
+ .out = "\\134h\\134\"\a\\317\e\\134",
+ .flags = ESCAPE_ANY | ESCAPE_APPEND,
+ },{
+ .out = "\\134h\\134\"\\007\\317\\033\\134",
+ .flags = ESCAPE_OCTAL | ESCAPE_APPEND | ESCAPE_NAP,
+ },{
+ .out = "\\134h\\134\"\a\\317\e\\134",
+ .flags = ESCAPE_OCTAL | ESCAPE_APPEND | ESCAPE_NA,
+ },{
/* terminator */
- }},
+ }}
},{
.in = "\eb \\C\007\"\x90\r]",
.s1 = {{
@@ -233,7 +271,89 @@ static const struct test_string_2 escape1[] __initconst = {{
.flags = ESCAPE_OCTAL,
},{
/* terminator */
- }},
+ }}
+},{
+ .in = "\007 \eb\"\x90\xCF\r",
+ .s1 = {{
+ .out = "\007 \eb\"\x90\xCF\r",
+ .flags = ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\xCF\r",
+ .flags = ESCAPE_SPACE | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\xCF\r",
+ .flags = ESCAPE_SPECIAL | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\xCF\r",
+ .flags = ESCAPE_SPACE | ESCAPE_SPECIAL | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\317\r",
+ .flags = ESCAPE_OCTAL | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\317\r",
+ .flags = ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\317\r",
+ .flags = ESCAPE_SPECIAL | ESCAPE_OCTAL | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\317\r",
+ .flags = ESCAPE_ANY | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\r",
+ .flags = ESCAPE_HEX | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\r",
+ .flags = ESCAPE_SPACE | ESCAPE_HEX | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\r",
+ .flags = ESCAPE_SPECIAL | ESCAPE_HEX | ESCAPE_NA,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\r",
+ .flags = ESCAPE_SPACE | ESCAPE_SPECIAL | ESCAPE_HEX | ESCAPE_NA,
+ },{
+ /* terminator */
+ }}
+},{
+ .in = "\007 \eb\"\x90\xCF\r",
+ .s1 = {{
+ .out = "\007 \eb\"\x90\xCF\r",
+ .flags = ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\xCF\\r",
+ .flags = ESCAPE_SPACE | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\xCF\r",
+ .flags = ESCAPE_SPECIAL | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\xCF\\r",
+ .flags = ESCAPE_SPACE | ESCAPE_SPECIAL | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\317\\015",
+ .flags = ESCAPE_OCTAL | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\317\\r",
+ .flags = ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\317\\015",
+ .flags = ESCAPE_SPECIAL | ESCAPE_OCTAL | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\317\r",
+ .flags = ESCAPE_ANY | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\\x0d",
+ .flags = ESCAPE_HEX | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\\r",
+ .flags = ESCAPE_SPACE | ESCAPE_HEX | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\\x0d",
+ .flags = ESCAPE_SPECIAL | ESCAPE_HEX | ESCAPE_NAP,
+ },{
+ .out = "\007 \eb\"\x90\\xcf\\r",
+ .flags = ESCAPE_SPACE | ESCAPE_SPECIAL | ESCAPE_HEX | ESCAPE_NAP,
+ },{
+ /* terminator */
+ }}
},{
/* terminator */
}};
@@ -290,7 +410,7 @@ test_string_escape_overflow(const char *in, int p, unsigned int flags, const cha
q_real = string_escape_mem(in, p, NULL, 0, flags, esc);
if (q_real != q_test)
- pr_warn("Test '%s' failed: flags = %u, osz = 0, expected %d, got %d\n",
+ pr_warn("Test '%s' failed: flags = %#x, osz = 0, expected %d, got %d\n",
name, flags, q_test, q_real);
}
@@ -315,8 +435,13 @@ static __init void test_string_escape(const char *name,
/* NULL injection */
if (flags & ESCAPE_NULL) {
in[p++] = '\0';
- out_test[q_test++] = '\\';
- out_test[q_test++] = '0';
+ /* '\0' passes isascii() test */
+ if (flags & ESCAPE_NA && !(flags & ESCAPE_APPEND && esc)) {
+ out_test[q_test++] = '\0';
+ } else {
+ out_test[q_test++] = '\\';
+ out_test[q_test++] = '0';
+ }
}
/* Don't try strings that have no output */
@@ -459,17 +584,17 @@ static int __init test_string_helpers_init(void)
unsigned int i;
pr_info("Running tests...\n");
- for (i = 0; i < UNESCAPE_ANY + 1; i++)
+ for (i = 0; i < UNESCAPE_ALL_MASK + 1; i++)
test_string_unescape("unescape", i, false);
test_string_unescape("unescape inplace",
get_random_int() % (UNESCAPE_ANY + 1), true);
/* Without dictionary */
- for (i = 0; i < (ESCAPE_ANY_NP | ESCAPE_HEX) + 1; i++)
+ for (i = 0; i < ESCAPE_ALL_MASK + 1; i++)
test_string_escape("escape 0", escape0, i, TEST_STRING_2_DICT_0);
/* With dictionary */
- for (i = 0; i < (ESCAPE_ANY_NP | ESCAPE_HEX) + 1; i++)
+ for (i = 0; i < ESCAPE_ALL_MASK + 1; i++)
test_string_escape("escape 1", escape1, i, TEST_STRING_2_DICT_1);
/* Test string_get_size() */
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 15f2e2db77bc..8c55c4723692 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -25,6 +25,7 @@
#include <linux/swapops.h>
#include <linux/sched/mm.h>
#include <linux/platform_device.h>
+#include <linux/rmap.h>
#include "test_hmm_uapi.h"
@@ -46,6 +47,7 @@ struct dmirror_bounce {
unsigned long cpages;
};
+#define DPT_XA_TAG_ATOMIC 1UL
#define DPT_XA_TAG_WRITE 3UL
/*
@@ -218,7 +220,7 @@ static bool dmirror_interval_invalidate(struct mmu_interval_notifier *mni,
* the invalidation is handled as part of the migration process.
*/
if (range->event == MMU_NOTIFY_MIGRATE &&
- range->migrate_pgmap_owner == dmirror->mdevice)
+ range->owner == dmirror->mdevice)
return true;
if (mmu_notifier_range_blockable(range))
@@ -619,6 +621,54 @@ static void dmirror_migrate_alloc_and_copy(struct migrate_vma *args,
}
}
+static int dmirror_check_atomic(struct dmirror *dmirror, unsigned long start,
+ unsigned long end)
+{
+ unsigned long pfn;
+
+ for (pfn = start >> PAGE_SHIFT; pfn < (end >> PAGE_SHIFT); pfn++) {
+ void *entry;
+ struct page *page;
+
+ entry = xa_load(&dmirror->pt, pfn);
+ page = xa_untag_pointer(entry);
+ if (xa_pointer_tag(entry) == DPT_XA_TAG_ATOMIC)
+ return -EPERM;
+ }
+
+ return 0;
+}
+
+static int dmirror_atomic_map(unsigned long start, unsigned long end,
+ struct page **pages, struct dmirror *dmirror)
+{
+ unsigned long pfn, mapped = 0;
+ int i;
+
+ /* Map the migrated pages into the device's page tables. */
+ mutex_lock(&dmirror->mutex);
+
+ for (i = 0, pfn = start >> PAGE_SHIFT; pfn < (end >> PAGE_SHIFT); pfn++, i++) {
+ void *entry;
+
+ if (!pages[i])
+ continue;
+
+ entry = pages[i];
+ entry = xa_tag_pointer(entry, DPT_XA_TAG_ATOMIC);
+ entry = xa_store(&dmirror->pt, pfn, entry, GFP_ATOMIC);
+ if (xa_is_err(entry)) {
+ mutex_unlock(&dmirror->mutex);
+ return xa_err(entry);
+ }
+
+ mapped++;
+ }
+
+ mutex_unlock(&dmirror->mutex);
+ return mapped;
+}
+
static int dmirror_migrate_finalize_and_map(struct migrate_vma *args,
struct dmirror *dmirror)
{
@@ -661,6 +711,72 @@ static int dmirror_migrate_finalize_and_map(struct migrate_vma *args,
return 0;
}
+static int dmirror_exclusive(struct dmirror *dmirror,
+ struct hmm_dmirror_cmd *cmd)
+{
+ unsigned long start, end, addr;
+ unsigned long size = cmd->npages << PAGE_SHIFT;
+ struct mm_struct *mm = dmirror->notifier.mm;
+ struct page *pages[64];
+ struct dmirror_bounce bounce;
+ unsigned long next;
+ int ret;
+
+ start = cmd->addr;
+ end = start + size;
+ if (end < start)
+ return -EINVAL;
+
+ /* Since the mm is for the mirrored process, get a reference first. */
+ if (!mmget_not_zero(mm))
+ return -EINVAL;
+
+ mmap_read_lock(mm);
+ for (addr = start; addr < end; addr = next) {
+ unsigned long mapped;
+ int i;
+
+ if (end < addr + (ARRAY_SIZE(pages) << PAGE_SHIFT))
+ next = end;
+ else
+ next = addr + (ARRAY_SIZE(pages) << PAGE_SHIFT);
+
+ ret = make_device_exclusive_range(mm, addr, next, pages, NULL);
+ mapped = dmirror_atomic_map(addr, next, pages, dmirror);
+ for (i = 0; i < ret; i++) {
+ if (pages[i]) {
+ unlock_page(pages[i]);
+ put_page(pages[i]);
+ }
+ }
+
+ if (addr + (mapped << PAGE_SHIFT) < next) {
+ mmap_read_unlock(mm);
+ mmput(mm);
+ return -EBUSY;
+ }
+ }
+ mmap_read_unlock(mm);
+ mmput(mm);
+
+ /* Return the migrated data for verification. */
+ ret = dmirror_bounce_init(&bounce, start, size);
+ if (ret)
+ return ret;
+ mutex_lock(&dmirror->mutex);
+ ret = dmirror_do_read(dmirror, start, end, &bounce);
+ mutex_unlock(&dmirror->mutex);
+ if (ret == 0) {
+ if (copy_to_user(u64_to_user_ptr(cmd->ptr), bounce.ptr,
+ bounce.size))
+ ret = -EFAULT;
+ }
+
+ cmd->cpages = bounce.cpages;
+ dmirror_bounce_fini(&bounce);
+ return ret;
+}
+
static int dmirror_migrate(struct dmirror *dmirror,
struct hmm_dmirror_cmd *cmd)
{
@@ -948,6 +1064,15 @@ static long dmirror_fops_unlocked_ioctl(struct file *filp,
ret = dmirror_migrate(dmirror, &cmd);
break;
+ case HMM_DMIRROR_EXCLUSIVE:
+ ret = dmirror_exclusive(dmirror, &cmd);
+ break;
+
+ case HMM_DMIRROR_CHECK_EXCLUSIVE:
+ ret = dmirror_check_atomic(dmirror, cmd.addr,
+ cmd.addr + (cmd.npages << PAGE_SHIFT));
+ break;
+
case HMM_DMIRROR_SNAPSHOT:
ret = dmirror_snapshot(dmirror, &cmd);
break;
diff --git a/lib/test_hmm_uapi.h b/lib/test_hmm_uapi.h
index 670b4ef2a5b6..f14dea5dcd06 100644
--- a/lib/test_hmm_uapi.h
+++ b/lib/test_hmm_uapi.h
@@ -33,6 +33,8 @@ struct hmm_dmirror_cmd {
#define HMM_DMIRROR_WRITE _IOWR('H', 0x01, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_MIGRATE _IOWR('H', 0x02, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_SNAPSHOT _IOWR('H', 0x03, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_EXCLUSIVE _IOWR('H', 0x04, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_CHECK_EXCLUSIVE _IOWR('H', 0x05, struct hmm_dmirror_cmd)
/*
* Values returned in hmm_dmirror_cmd.ptr for HMM_DMIRROR_SNAPSHOT.
diff --git a/lib/test_string.c b/lib/test_string.c
index 7b31f4a505bf..9dfd6f52de92 100644
--- a/lib/test_string.c
+++ b/lib/test_string.c
@@ -179,6 +179,10 @@ static __init int strnchr_selftest(void)
return 0;
}
+static __exit void string_selftest_remove(void)
+{
+}
+
static __init int string_selftest_init(void)
{
int test, subtest;
@@ -216,4 +220,5 @@ fail:
}
module_init(string_selftest_init);
+module_exit(string_selftest_remove);
MODULE_LICENSE("GPL v2");
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index e5c7afbf7405..2926cc27623f 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -86,6 +86,7 @@ static unsigned long long simple_strntoull(const char *startp, size_t max_chars,
*
* This function has caveats. Please use kstrtoull instead.
*/
+noinline
unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base)
{
return simple_strntoull(cp, INT_MAX, endp, base);
diff --git a/lib/xz/xz_dec_bcj.c b/lib/xz/xz_dec_bcj.c
index 72ddac6ef2ec..ef449e97d1a1 100644
--- a/lib/xz/xz_dec_bcj.c
+++ b/lib/xz/xz_dec_bcj.c
@@ -422,7 +422,7 @@ XZ_EXTERN enum xz_ret xz_dec_bcj_run(struct xz_dec_bcj *s,
/*
* Flush pending already filtered data to the output buffer. Return
- * immediatelly if we couldn't flush everything, or if the next
+ * immediately if we couldn't flush everything, or if the next
* filter in the chain had already returned XZ_STREAM_END.
*/
if (s->temp.filtered > 0) {
diff --git a/lib/xz/xz_dec_lzma2.c b/lib/xz/xz_dec_lzma2.c
index ca2603abee08..7a6781e3f47b 100644
--- a/lib/xz/xz_dec_lzma2.c
+++ b/lib/xz/xz_dec_lzma2.c
@@ -147,8 +147,8 @@ struct lzma_dec {
/*
* LZMA properties or related bit masks (number of literal
- * context bits, a mask dervied from the number of literal
- * position bits, and a mask dervied from the number
+ * context bits, a mask derived from the number of literal
+ * position bits, and a mask derived from the number
* position bits)
*/
uint32_t lc;
@@ -484,7 +484,7 @@ static __always_inline void rc_normalize(struct rc_dec *rc)
}
/*
- * Decode one bit. In some versions, this function has been splitted in three
+ * Decode one bit. In some versions, this function has been split in three
* functions so that the compiler is supposed to be able to more easily avoid
* an extra branch. In this particular version of the LZMA decoder, this
* doesn't seem to be a good idea (tested with GCC 3.3.6, 3.4.6, and 4.3.3
@@ -761,7 +761,7 @@ static bool lzma_main(struct xz_dec_lzma2 *s)
}
/*
- * Reset the LZMA decoder and range decoder state. Dictionary is nore reset
+ * Reset the LZMA decoder and range decoder state. Dictionary is not reset
* here, because LZMA state may be reset without resetting the dictionary.
*/
static void lzma_reset(struct xz_dec_lzma2 *s)
diff --git a/lib/zlib_inflate/inffast.c b/lib/zlib_inflate/inffast.c
index ed1f3df27260..f19c4fbe1be7 100644
--- a/lib/zlib_inflate/inffast.c
+++ b/lib/zlib_inflate/inffast.c
@@ -15,7 +15,7 @@ union uu {
unsigned char b[2];
};
-/* Endian independed version */
+/* Endian independent version */
static inline unsigned short
get_unaligned16(const unsigned short *p)
{
diff --git a/lib/zstd/huf.h b/lib/zstd/huf.h
index 2143da28d952..923218d12e28 100644
--- a/lib/zstd/huf.h
+++ b/lib/zstd/huf.h
@@ -134,7 +134,7 @@ typedef enum {
HUF_repeat_none, /**< Cannot use the previous table */
HUF_repeat_check, /**< Can use the previous table but it must be checked. Note : The previous table must have been constructed by HUF_compress{1,
4}X_repeat */
- HUF_repeat_valid /**< Can use the previous table and it is asumed to be valid */
+ HUF_repeat_valid /**< Can use the previous table and it is assumed to be valid */
} HUF_repeat;
/** HUF_compress4X_repeat() :
* Same as HUF_compress4X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none.
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-24 22:47:23 +0000