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-rw-r--r--fs/pipe.c5
-rw-r--r--include/linux/pipe_fs_i.h2
-rw-r--r--kernel/sysctl.c3
3 files changed, 5 insertions, 5 deletions
diff --git a/fs/pipe.c b/fs/pipe.c
index 46c30ac777da..817393d36244 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1020,10 +1020,13 @@ const struct file_operations pipefifo_fops = {
* Currently we rely on the pipe array holding a power-of-2 number
* of pages. Returns 0 on error.
*/
-unsigned int round_pipe_size(unsigned int size)
+unsigned int round_pipe_size(unsigned long size)
{
unsigned long nr_pages;
+ if (size > UINT_MAX)
+ return 0;
+
/* Minimum pipe size, as required by POSIX */
if (size < PAGE_SIZE)
size = PAGE_SIZE;
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 5028bd4b2c96..5a3bb3b7c9ad 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -190,6 +190,6 @@ long pipe_fcntl(struct file *, unsigned int, unsigned long arg);
struct pipe_inode_info *get_pipe_info(struct file *file);
int create_pipe_files(struct file **, int);
-unsigned int round_pipe_size(unsigned int size);
+unsigned int round_pipe_size(unsigned long size);
#endif
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 59f09ea3ca3e..f98f28c12020 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2623,9 +2623,6 @@ static int do_proc_dopipe_max_size_conv(unsigned long *lvalp,
if (write) {
unsigned int val;
- if (*lvalp > UINT_MAX)
- return -EINVAL;
-
val = round_pipe_size(*lvalp);
if (val == 0)
return -EINVAL;