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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2020-07-17 11:34:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-05 11:06:02 +0300 |
| commit | 8b2a6581c88f277d99ff6a530d590603c68426b2 (patch) | |
| tree | d7e95a075d0131dfe87676dfc64c4d4a0264ce97 /include | |
| parent | 9a5e3aba2c1ce1055a04b70b26e86c28d5eada82 (diff) | |
| download | linux-8b2a6581c88f277d99ff6a530d590603c68426b2.tar.xz | |
xfrm: Fix crash when the hold queue is used.
[ Upstream commit 101dde4207f1daa1fda57d714814a03835dccc3f ]
The commits "xfrm: Move dst->path into struct xfrm_dst"
and "net: Create and use new helper xfrm_dst_child()."
changed xfrm bundle handling under the assumption
that xdst->path and dst->child are not a NULL pointer
only if dst->xfrm is not a NULL pointer. That is true
with one exception. If the xfrm hold queue is used
to wait until a SA is installed by the key manager,
we create a dummy bundle without a valid dst->xfrm
pointer. The current xfrm bundle handling crashes
in that case. Fix this by extending the NULL check
of dst->xfrm with a test of the DST_XFRM_QUEUE flag.
Fixes: 0f6c480f23f4 ("xfrm: Move dst->path into struct xfrm_dst")
Fixes: b92cf4aab8e6 ("net: Create and use new helper xfrm_dst_child().")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/xfrm.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h index f087c8d125b8..3a0b5de742e9 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -1016,7 +1016,7 @@ struct xfrm_dst { static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) { #ifdef CONFIG_XFRM - if (dst->xfrm) { + if (dst->xfrm || (dst->flags & DST_XFRM_QUEUE)) { const struct xfrm_dst *xdst = (const struct xfrm_dst *) dst; return xdst->path; @@ -1028,7 +1028,7 @@ static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) static inline struct dst_entry *xfrm_dst_child(const struct dst_entry *dst) { #ifdef CONFIG_XFRM - if (dst->xfrm) { + if (dst->xfrm || (dst->flags & DST_XFRM_QUEUE)) { struct xfrm_dst *xdst = (struct xfrm_dst *) dst; return xdst->child; } |