[PATCH] [nfs/nfs-utils] rpcdebug: avoid buffer underflow if read() returns 0
From: Zhi Li <hidden>
Date: 2023-03-09 06:21:18
Subsystem:
the rest · Maintainer:
Linus Torvalds
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2176740 Signed-off-by: Zhi Li <redacted> --- tools/rpcdebug/rpcdebug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/rpcdebug/rpcdebug.c b/tools/rpcdebug/rpcdebug.c
index 68206cc5..ec05179e 100644
--- a/tools/rpcdebug/rpcdebug.c
+++ b/tools/rpcdebug/rpcdebug.c@@ -257,7 +257,7 @@ get_flags(char *module) perror(filename); exit(1); } - if ((len = read(sysfd, buffer, sizeof(buffer))) < 0) { + if ((len = read(sysfd, buffer, sizeof(buffer))) <= 0) { perror("read"); exit(1); }
--
2.39.0