Thread (4 messages) 4 messages, 3 authors, 2011-01-16
STALE5644d

[patch] 9p: fix min_t() casting

From: Dan Carpenter <hidden>
Date: 2011-01-15 20:36:52
Also in: kernel-janitors
Subsystem: 9p file system, the rest · Maintainers: Eric Van Hensbergen, Latchesar Ionkov, Dominique Martinet, Linus Torvalds

The intent here was to cap the length to USHRT_MAX, but what the
code actually does is it just casts the return from strlen() to
unsigned short and truncates the significant bits away.

Signed-off-by: Dan Carpenter <redacted>
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 1e308f2..0422581 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -403,7 +403,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
 				const char *sptr = va_arg(ap, const char *);
 				uint16_t len = 0;
 				if (sptr)
-					len = min_t(uint16_t, strlen(sptr),
+					len = min_t(size_t, strlen(sptr),
 								USHRT_MAX);
 
 				errcode = p9pdu_writef(pdu, proto_version,
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