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| author | Dmitry V. Levin <ldv@altlinux.org> | 2016-02-19 04:27:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-19 23:49:23 -0500 |
| commit | b5f0549231ffb025337be5a625b0ff9f52b016f0 (patch) | |
| tree | 03efe8e30d488d9ef17671c578b2fcc07a96ffde | |
| parent | 5a0e2f2622eb65b59bcefb01c5c475af4fab0e6d (diff) | |
| download | linux-b5f0549231ffb025337be5a625b0ff9f52b016f0.tar.gz linux-b5f0549231ffb025337be5a625b0ff9f52b016f0.tar.bz2 linux-b5f0549231ffb025337be5a625b0ff9f52b016f0.zip | |
unix_diag: fix incorrect sign extension in unix_lookup_by_ino
The value passed by unix_diag_get_exact to unix_lookup_by_ino has type
__u32, but unix_lookup_by_ino's argument ino has type int, which is not
a problem yet.
However, when ino is compared with sock_i_ino return value of type
unsigned long, ino is sign extended to signed long, and this results
to incorrect comparison on 64-bit architectures for inode numbers
greater than INT_MAX.
This bug was found by strace test suite.
Fixes: 5d3cae8bc39d ("unix_diag: Dumping exact socket core")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/unix/diag.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/unix/diag.c b/net/unix/diag.c index c512f64d5287..4d9679701a6d 100644 --- a/net/unix/diag.c +++ b/net/unix/diag.c @@ -220,7 +220,7 @@ done: return skb->len; } -static struct sock *unix_lookup_by_ino(int ino) +static struct sock *unix_lookup_by_ino(unsigned int ino) { int i; struct sock *sk; |