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powerpc/boot: Fix missing check of lseek() return value

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[ 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>
This commit is contained in:
Bo YU
2018-10-30 09:21:55 -04:00
committed by Greg Kroah-Hartman
parent da8db898f9
commit bfcbe50579
1 changed files with 5 additions and 1 deletions
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6
arch/powerpc/boot/addnote.c
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@@ -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");