linux

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Sabrina Dubroca 8e49da5e8f tls: don't rely on tx_work during send()

[ Upstream commit 7f846c65ca ]

With async crypto, we rely on tx_work to actually transmit records
once encryption completes. But while send() is running, both the
tx_lock and socket lock are held, so tx_work_handler cannot process
the queue of encrypted records, and simply reschedules itself. During
a large send(), this could last a long time, and use a lot of memory.

Transmit any pending encrypted records before restarting the main
loop of tls_sw_sendmsg_locked.

Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/8396631478f70454b44afb98352237d33f48d34d.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-10-23 16:24:31 +02:00

Kconfig

net: skbuff: generalize the skb->decrypted bit

2024-04-06 17:34:31 +01:00

Makefile

tls: rx: async: hold onto the input skb

2022-07-18 11:24:11 +01:00

tls_device_fallback.c

net/tls: use the new scatterwalk functions

2025-03-02 15:19:44 +08:00

tls_device.c

tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().