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xdp: unpin xdp umem pages in error path

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[ Upstream commit fb89c39455 ]

Fix mem leak caused by missed unpin routine for umem pages.

Fixes: 8aef7340ae ("xsk: introduce xdp_umem_page")
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ivan Khoronzhuk 2019-08-15 23:56:35 +03:00 committed by Greg Kroah-Hartman
parent 55ed0ad502
commit 30881d79de
1 changed files with 3 additions and 1 deletions
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4
net/xdp/xdp_umem.c
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@ -322,7 +322,7 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr)
umem->pages = kcalloc(umem->npgs, sizeof(*umem->pages), GFP_KERNEL);
if (!umem->pages) {
err = -ENOMEM;
goto out_account;
goto out_pin;
}
for (i = 0; i < umem->npgs; i++)
@ -330,6 +330,8 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr)
return 0;
out_pin:
xdp_umem_unpin_pages(umem);
out_account:
xdp_umem_unaccount_pages(umem);
return err;