diff mbox series

[next] net/sunrpc: fix unsigned size_t comparison to less than zero

Message ID 20201028114410.108759-1-colin.king@canonical.com
State Not Applicable
Delegated to: David Miller
Headers show
Series [next] net/sunrpc: fix unsigned size_t comparison to less than zero | expand

Checks

Context Check Description
jkicinski/cover_letter success Link
jkicinski/fixes_present success Link
jkicinski/patch_count success Link
jkicinski/tree_selection success Guessed tree name to be net-next
jkicinski/subject_prefix warning Target tree name not specified in the subject
jkicinski/source_inline success Was 0 now: 0
jkicinski/verify_signedoff success Link
jkicinski/module_param success Was 0 now: 0
jkicinski/build_32bit fail Errors and warnings before: 4 this patch: 4
jkicinski/kdoc success Errors and warnings before: 0 this patch: 0
jkicinski/verify_fixes success Link
jkicinski/checkpatch fail Link
jkicinski/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
jkicinski/header_inline success Link
jkicinski/stable success Stable not CCed

Commit Message

Colin Ian King Oct. 28, 2020, 11:44 a.m. UTC 
From: Colin Ian King <colin.king@canonical.com>

Currently the check for *lenp < 0 is always true since the type is a size_t
and can never be negative. Fix this by casting it to ssize_t.

Addresses-Coverity: ("Unsigned compared against 0")
Fixes: c09f56b8f68d ("net/sunrpc: Fix return value for sysctl sunrpc.transports")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 net/sunrpc/sysctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c
index a18b36b5422d..bb62badef6bc 100644
--- a/net/sunrpc/sysctl.c
+++ b/net/sunrpc/sysctl.c
@@ -72,7 +72,7 @@  static int proc_do_xprt(struct ctl_table *table, int write,
 	len = svc_print_xprts(tmpbuf, sizeof(tmpbuf));
 	*lenp = memory_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len);
 
-	if (*lenp < 0) {
+	if ((ssize_t)*lenp < 0) {
 		*lenp = 0;
 		return -EINVAL;
 	}