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| author | Peter Maydell <peter.maydell@linaro.org> | 2013-02-08 07:58:41 +0000 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2013-03-11 14:34:05 +0200 |
| commit | dfae8e00f8ddeedcda24bd28f71d4fd2a9f988b8 (patch) | |
| tree | 0b20f25353cc5cfa637fdfd7c6eb66203800a4c3 /linux-user | |
| parent | 63ec54d7b319824df8b60cfe25afdfb607ce3905 (diff) | |
| download | qemu-dfae8e00f8ddeedcda24bd28f71d4fd2a9f988b8.zip qemu-dfae8e00f8ddeedcda24bd28f71d4fd2a9f988b8.tar.gz qemu-dfae8e00f8ddeedcda24bd28f71d4fd2a9f988b8.tar.bz2 | |
linux-user: make bogus negative iovec lengths fail EINVAL
If the guest passes us a bogus negative length for an iovec, fail
EINVAL rather than proceeding blindly forward. This fixes some of
the error cases tests for readv and writev in the LTP.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 1729446..bab9ab5 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -1776,7 +1776,7 @@ static struct iovec *lock_iovec(int type, abi_ulong target_addr, errno = 0; return NULL; } - if (count > IOV_MAX) { + if (count < 0 || count > IOV_MAX) { errno = EINVAL; return NULL; } |