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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-26 23:12:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-26 23:12:12 -0700
commit5e608a027082ae426e100a582031e0ff40becc83 (patch)
tree7696ef52b7ea1e873dc367dbc2843bedcc09c6b1 /kernel
parent65fc7d54efb6b03dcf61d98aa0fd68fe968c211c (diff)
parent11bd969fdefea3ac0cb9791224f1e09784e21e58 (diff)
downloadlinux-stericsson-5e608a027082ae426e100a582031e0ff40becc83.tar.gz
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton: "11 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: silently skip readahead for DAX inodes dax: fix device-dax region base fs/seq_file: fix out-of-bounds read mm: memcontrol: avoid unused function warning mm: clarify COMPACTION Kconfig text treewide: replace config_enabled() with IS_ENABLED() (2nd round) printk: fix parsing of "brl=" option soft_dirty: fix soft_dirty during THP split sysctl: handle error writing UINT_MAX to u32 fields get_maintainer: quiet noisy implicit -f vcs_file_exists checking byteswap: don't use __builtin_bswap*() with sparse
Diffstat (limited to 'kernel')
-rw-r--r--kernel/printk/braille.c4
-rw-r--r--kernel/sysctl.c45
2 files changed, 45 insertions, 4 deletions
diff --git a/kernel/printk/braille.c b/kernel/printk/braille.c
index 276762f3a460..d5760c42f042 100644
--- a/kernel/printk/braille.c
+++ b/kernel/printk/braille.c
@@ -9,10 +9,10 @@
char *_braille_console_setup(char **str, char **brl_options)
{
- if (!memcmp(*str, "brl,", 4)) {
+ if (!strncmp(*str, "brl,", 4)) {
*brl_options = "";
*str += 4;
- } else if (!memcmp(str, "brl=", 4)) {
+ } else if (!strncmp(*str, "brl=", 4)) {
*brl_options = *str + 4;
*str = strchr(*brl_options, ',');
if (!*str)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b43d0b27c1fe..a13bbdaab47d 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2140,6 +2140,21 @@ static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp,
return 0;
}
+static int do_proc_douintvec_conv(bool *negp, unsigned long *lvalp,
+ int *valp,
+ int write, void *data)
+{
+ if (write) {
+ if (*negp)
+ return -EINVAL;
+ *valp = *lvalp;
+ } else {
+ unsigned int val = *valp;
+ *lvalp = (unsigned long)val;
+ }
+ return 0;
+}
+
static const char proc_wspace_sep[] = { ' ', '\t', '\n' };
static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
@@ -2259,8 +2274,27 @@ static int do_proc_dointvec(struct ctl_table *table, int write,
int proc_dointvec(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
- return do_proc_dointvec(table,write,buffer,lenp,ppos,
- NULL,NULL);
+ return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL);
+}
+
+/**
+ * proc_douintvec - read a vector of unsigned integers
+ * @table: the sysctl table
+ * @write: %TRUE if this is a write to the sysctl file
+ * @buffer: the user buffer
+ * @lenp: the size of the user buffer
+ * @ppos: file position
+ *
+ * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer
+ * values from/to the user buffer, treated as an ASCII string.
+ *
+ * Returns 0 on success.
+ */
+int proc_douintvec(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return do_proc_dointvec(table, write, buffer, lenp, ppos,
+ do_proc_douintvec_conv, NULL);
}
/*
@@ -2858,6 +2892,12 @@ int proc_dointvec(struct ctl_table *table, int write,
return -ENOSYS;
}
+int proc_douintvec(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
+
int proc_dointvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
@@ -2903,6 +2943,7 @@ int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
* exception granted :-)
*/
EXPORT_SYMBOL(proc_dointvec);
+EXPORT_SYMBOL(proc_douintvec);
EXPORT_SYMBOL(proc_dointvec_jiffies);
EXPORT_SYMBOL(proc_dointvec_minmax);
EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);