Magnus Karlsson df551058f7 xsk: Fix crash in poll when device does not support ndo_xsk_wakeup ... Fixes a crash in poll() when an AF_XDP socket is opened in copy mode and the bound device does not have ndo_xsk_wakeup defined. Avoid trying to call the non-existing ndo and instead call the internal xsk sendmsg function to send packets in the same way (from the application's point of view) as calling sendmsg() in any mode or poll() in zero-copy mode would have done. The application should behave in the same way independent on if zero-copy mode or copy mode is used. Fixes: 77cd0d7b3f ("xsk: add support for need_wakeup flag in AF_XDP rings") Reported-by: syzbot+a5765ed8cdb1cca4d249@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/1569997919-11541-1-git-send-email-magnus.karlsson@intel.com		2019-10-03 16:34:27 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
xdp_umem.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-09-28 17:47:33 -07:00
xdp_umem.h	xdp: fix hang while unregistering device bound to xdp socket	2019-07-03 15:10:55 +02:00
xsk_diag.c	xsk: lock the control mutex in sock_diag interface	2019-09-05 14:11:52 +02:00
xsk_queue.c	net: xsk: add a simple buffer reuse queue	2018-09-25 13:13:15 -07:00
xsk_queue.h	xsk: add support to allow unaligned chunk placement	2019-08-31 01:08:26 +02:00
xsk.c	xsk: Fix crash in poll when device does not support ndo_xsk_wakeup	2019-10-03 16:34:27 +02:00
xsk.h	xsk: add support for need_wakeup flag in AF_XDP rings	2019-08-17 23:07:32 +02:00