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(parent: 8a4b578) | patch
esp: Fix locking on page fragment allocation
authorSteffen Klassert <steffen.klassert@secunet.com>
Fri, 25 Aug 2017 05:16:07 +0000 (07:16 +0200)
committerSteffen Klassert <steffen.klassert@secunet.com>
Fri, 25 Aug 2017 07:26:12 +0000 (09:26 +0200)
commit36ff0dd39f9b88ca83e1733b735e9f22b7be893b
tree4630219935215d5488958b705ee3a84ffccf17bftree | snapshot
parent8a4b5784fac2af93ad6a8c08fb56d021e0c0416bcommit | diff
esp: Fix locking on page fragment allocation

We allocate the page fragment for the ESP trailer inside
a spinlock, but consume it outside of the lock. This
is racy as some other cou could get the same page fragment
then. Fix this by consuming the page fragment inside the
lock too.

Fixes: cac2661c53f3 ("esp4: Avoid skb_cow_data whenever possible")
Fixes: 03e2a30f6a27 ("esp6: Avoid skb_cow_data whenever possible")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
net/ipv4/esp4.c diff | blob | history
net/ipv6/esp6.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git