Dave Watson 32da12216e tls: Stricter error checking in zerocopy sendmsg path ... In the zerocopy sendmsg() path, there are error checks to revert the zerocopy if we get any error code. syzkaller has discovered that tls_push_record can return -ECONNRESET, which is fatal, and happens after the point at which it is safe to revert the iter, as we've already passed the memory to do_tcp_sendpages. Previously this code could return -ENOMEM and we would want to revert the iter, but AFAIK this no longer returns ENOMEM after a447da7d00 ("tls: fix waitall behavior in tls_sw_recvmsg"), so we fail for all error codes. Reported-by: syzbot+c226690f7b3126c5ee04@syzkaller.appspotmail.com Reported-by: syzbot+709f2810a6a05f11d4d3@syzkaller.appspotmail.com Signed-off-by: Dave Watson <davejwatson@fb.com> Fixes: 3c4d755915 ("tls: kernel TLS support") Signed-off-by: David S. Miller <davem@davemloft.net>		2018-07-16 13:31:31 -07:00
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Kconfig	net/tls: Add generic NIC offload infrastructure	2018-05-01 09:42:47 -04:00
Makefile	net/tls: Add generic NIC offload infrastructure	2018-05-01 09:42:47 -04:00
tls_device.c	tls: Fix tls_device initialization	2018-05-10 17:54:20 -04:00
tls_device_fallback.c	net/tls: Add generic NIC offload infrastructure	2018-05-01 09:42:47 -04:00
tls_main.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00
tls_sw.c	tls: Stricter error checking in zerocopy sendmsg path	2018-07-16 13:31:31 -07:00