linux/net/xdp
Björn Töpel 044175a067 xsk: fix umem memory leak on cleanup
When the umem is cleaned up, the task that created it might already be
gone. If the task was gone, the xdp_umem_release function did not free
the pages member of struct xdp_umem.

It turned out that the task lookup was not needed at all; The code was
a left-over when we moved from task accounting to user accounting [1].

This patch fixes the memory leak by removing the task lookup logic
completely.

[1] https://lore.kernel.org/netdev/20180131135356.19134-3-bjorn.topel@gmail.com/

Link: https://lore.kernel.org/netdev/c1cb2ca8-6a14-3980-8672-f3de0bb38dfd@suse.cz/
Fixes: c0c77d8fb7 ("xsk: add user memory registration support sockopt")
Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-16 01:27:51 +01:00
..
Kconfig xsk: add sock_diag interface for AF_XDP 2019-01-25 01:50:03 +01:00
Makefile xsk: add sock_diag interface for AF_XDP 2019-01-25 01:50:03 +01:00
xdp_umem.c xsk: fix umem memory leak on cleanup 2019-03-16 01:27:51 +01:00
xdp_umem.h xsk: fix bug when trying to use both copy and zero-copy on one queue id 2018-10-05 09:31:00 +02:00
xsk.c xsk: fix to reject invalid flags in xsk_bind 2019-03-08 21:17:06 +01:00
xsk.h xsk: add sock_diag interface for AF_XDP 2019-01-25 01:50:03 +01:00
xsk_diag.c xsk: fix potential crash in xsk_diag_put_umem() 2019-03-07 10:36:37 +01:00
xsk_queue.c net: xsk: add a simple buffer reuse queue 2018-09-25 13:13:15 -07:00
xsk_queue.h xsk: fix to reject invalid options in Tx descriptor 2019-03-08 21:17:06 +01:00