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powerpc/boot: Fix missing check of lseek() return value
author
Bo YU
<tsu.yubo@gmail.com>
Tue, 30 Oct 2018 13:21:55 +0000
(09:21 -0400)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Fri, 31 May 2019 13:46:11 +0000
(06:46 -0700)
[ Upstream commit
5d085ec04a000fefb5182d3b03ee46ca96d8389b
]
This is detected by Coverity scan: CID:
1440481
Signed-off-by: Bo YU <tsu.yubo@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/powerpc/boot/addnote.c
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diff --git
a/arch/powerpc/boot/addnote.c
b/arch/powerpc/boot/addnote.c
index
9d9f6f3
..
3da3e2b
100644
(file)
--- a/
arch/powerpc/boot/addnote.c
+++ b/
arch/powerpc/boot/addnote.c
@@
-223,7
+223,11
@@
main(int ac, char **av)
PUT_16(E_PHNUM, np + 2);
/* write back */
- lseek(fd, (long) 0, SEEK_SET);
+ i = lseek(fd, (long) 0, SEEK_SET);
+ if (i < 0) {
+ perror("lseek");
+ exit(1);
+ }
i = write(fd, buf, n);
if (i < 0) {
perror("write");