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kvm: Check for read() return value in load_bzimage()

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Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Pekka Enberg
2015-06-01 16:39:40 +01:00
committed by Will Deacon
parent 34649df9e8
commit 7ada9b6b0e
1 changed files with 2 additions and 1 deletions
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kvm.c
+2 -1
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@@ -298,7 +298,8 @@ static bool load_bzimage(struct kvm *self, int fd, const char *kernel_cmdline)
if (lseek(fd, 0, SEEK_SET) < 0)
die_perror("lseek");
read(fd, &boot, sizeof(boot));
if (read(fd, &boot, sizeof(boot)) != sizeof(boot))
die_perror("read");
if (memcmp(&boot.hdr.header, BZIMAGE_MAGIC, strlen(BZIMAGE_MAGIC)) != 0)
return false;