Kal Conley 0b0e450f45 xsk: Fix unaligned descriptor validation ... [ Upstream commit d769ccaf95 ] Make sure unaligned descriptors that straddle the end of the UMEM are considered invalid. Currently, descriptor validation is broken for zero-copy mode which only checks descriptors at page granularity. For example, descriptors in zero-copy mode that overrun the end of the UMEM but not a page boundary are (incorrectly) considered valid. The UMEM boundary check needs to happen before the page boundary and contiguity checks in xp_desc_crosses_non_contig_pg(). Do this check in xp_unaligned_validate_desc() instead like xp_check_unaligned() already does. Fixes: 2b43470add ("xsk: Introduce AF_XDP buffer allocation API") Signed-off-by: Kal Conley <kal.conley@dectris.com> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/r/20230405235920.7305-2-kal.conley@dectris.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-11 23:11:12 +09:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	xsk: Introduce AF_XDP buffer allocation API	2020-05-21 17:31:26 -07:00
xdp_umem.c	xsk: Add missing overflow check in xdp_umem_reg	2023-03-30 12:50:52 +02:00
xdp_umem.h	xsk: Fix umem cleanup bug at socket destruct	2020-11-20 15:52:39 +01:00
xsk.c	xsk: check IFF_UP earlier in Tx path	2023-03-10 09:28:23 +01:00
xsk.h	xdp: Add proper __rcu annotations to redirect map entries	2021-06-24 19:41:15 +02:00
xsk_buff_pool.c	xsk: Inherit need_wakeup flag for shared sockets	2022-09-22 17:16:22 +02:00
xsk_diag.c	xsk: Fix possible segfault in xsk umem diagnostics	2020-09-02 16:49:40 +02:00
xsk_queue.c	xsk: Remove MEM_TYPE_ZERO_COPY and corresponding code	2020-05-21 17:31:27 -07:00
xsk_queue.h	xsk: Fix unaligned descriptor validation	2023-05-11 23:11:12 +09:00
xskmap.c	bpf: return long from bpf_map_ops funcs	2023-05-11 23:11:09 +09:00