| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.5 121/200] IB/core: Fix oops in ib_cache_gid_set_default_gid | Date | Mon, 2 May 2016 17:12:00 -0700 |
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4.5-stable review patch. If anyone has any objections, please let me know.
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From: Doug Ledford <dledford@redhat.com>
commit f4e7de63ab273b6a5e35c82eb4fc6363c855ddd4 upstream.
When we fail to find the default gid index, we can't continue processing in this routine or else we will pass a negative index to later routines resulting in invalid memory access attempts and a kernel oops.
Fixes: 03db3a2d81e6 (IB/core: Add RoCE GID table management) Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/infiniband/core/cache.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -691,7 +691,8 @@ void ib_cache_gid_set_default_gid(struct NULL); /* Coudn't find default GID location */ - WARN_ON(ix < 0); + if (WARN_ON(ix < 0)) + goto release; zattr_type.gid_type = gid_type;
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