Magnus Karlsson 53ea2076d8 xsk: Fix possible segfault in xsk umem diagnostics ... Fix possible segfault in the xsk diagnostics code when dumping information about the umem. This can happen when a umem has been created, but the socket has not been bound yet. In this case, the xsk buffer pool does not exist yet and we cannot dump the information that was moved from the umem to the buffer pool. Fix this by testing for the existence of the buffer pool and if not there, do not dump any of that information. Fixes: c2d3d6a474 ("xsk: Move queue_id, dev and need_wakeup to buffer pool") Fixes: 7361f9c3d7 ("xsk: Move fill and completion rings to buffer pool") Reported-by: syzbot+3f04d36b7336f7868066@syzkaller.appspotmail.com Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/1599036743-26454-1-git-send-email-magnus.karlsson@intel.com		2020-09-02 16:49:40 +02:00
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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: Enable sharing of dma mappings	2020-08-31 21:15:04 +02:00
xdp_umem.h	xsk: Move xsk_tx_list and its lock to buffer pool	2020-08-31 21:15:04 +02:00
xsk.c	xsk: Add shared umem support between devices	2020-08-31 21:15:04 +02:00
xsk.h	xsk: Move queue_id, dev and need_wakeup to buffer pool	2020-08-31 21:15:04 +02:00
xsk_buff_pool.c	xsk: Add shared umem support between queue ids	2020-08-31 21:15:04 +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: Create and free buffer pool independently from umem	2020-08-31 21:15:04 +02:00
xskmap.c	bpf: Relax max_entries check for most of the inner map types	2020-08-28 15:41:30 +02:00