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Message-Id: <20140424214450.962461525@linuxfoundation.org> Date: Thu, 24 Apr 2014 14:48:23 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Richard Cochran <richardcochran@...il.com>, "Eric W. Biederman" <ebiederm@...ssion.com> Subject: [PATCH 3.14 10/33] kernfs: fix off by one error. 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Richard Cochran <richardcochran@...il.com> commit 88391d49abb7d8dee91d405f96bd9e003cb6798d upstream. The hash values 0 and 1 are reserved for magic directory entries, but the code only prevents names hashing to 0. This patch fixes the test to also prevent hash value 1. Signed-off-by: Richard Cochran <richardcochran@...il.com> Reviewed-by: "Eric W. Biederman" <ebiederm@...ssion.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- fs/kernfs/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -37,7 +37,7 @@ static unsigned int kernfs_name_hash(con hash = (end_name_hash(hash) ^ hash_ptr((void *)ns, 31)); hash &= 0x7fffffffU; /* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */ - if (hash < 1) + if (hash < 2) hash += 2; if (hash >= INT_MAX) hash = INT_MAX - 1; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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