Paolo Abeni ec9bc89a01 tcp: allow again tcp_disconnect() when threads are waiting ... [ Upstream commit 419ce133ab ] As reported by Tom, .NET and applications build on top of it rely on connect(AF_UNSPEC) to async cancel pending I/O operations on TCP socket. The blamed commit below caused a regression, as such cancellation can now fail. As suggested by Eric, this change addresses the problem explicitly causing blocking I/O operation to terminate immediately (with an error) when a concurrent disconnect() is executed. Instead of tracking the number of threads blocked on a given socket, track the number of disconnect() issued on such socket. If such counter changes after a blocking operation releasing and re-acquiring the socket lock, error out the current operation. Fixes: 4faeee0cf8 ("tcp: deny tcp_disconnect() when threads are waiting") Reported-by: Tom Deseyn <tdeseyn@redhat.com> Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1886305 Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/f3b95e47e3dbed840960548aebaa8d954372db41.1697008693.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-10-25 12:03:12 +02:00
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Kconfig	net/tls: Select SOCK_RX_QUEUE_MAPPING from TLS_DEVICE	2021-02-11 19:08:06 -08:00
Makefile	tls: rx: async: hold onto the input skb	2022-07-18 11:24:11 +01:00
tls.h	tls: rx: strp: preserve decryption status of skbs when needed	2023-06-05 09:26:18 +02:00
tls_device.c	net: tls: avoid discarding data on record close	2023-08-16 18:27:27 +02:00
tls_device_fallback.c	net/tls: Fix memory leak in tls_enc_skb() and tls_sw_fallback_init()	2022-11-11 20:08:17 -08:00
tls_main.c	tcp: allow again tcp_disconnect() when threads are waiting	2023-10-25 12:03:12 +02:00
tls_proc.c	tls: rx: add counter for NoPad violations	2022-07-11 19:48:33 -07:00
tls_strp.c	tls: improve lockless access safety of tls_err_abort()	2023-06-09 10:34:01 +02:00
tls_sw.c	tcp: allow again tcp_disconnect() when threads are waiting	2023-10-25 12:03:12 +02:00
tls_toe.c	tls: create an internal header	2022-07-08 18:38:45 -07:00
trace.c	net/tls: add tracing for device/offload events	2019-10-05 16:29:00 -07:00
trace.h	net/tls: add device decrypted trace point	2019-10-05 16:29:00 -07:00