linux_dsm_epyc7002/include
Eric Dumazet d983ea6f16 tcp: add rcu protection around tp->fastopen_rsk
Both tcp_v4_err() and tcp_v6_err() do the following operations
while they do not own the socket lock :

	fastopen = tp->fastopen_rsk;
 	snd_una = fastopen ? tcp_rsk(fastopen)->snt_isn : tp->snd_una;

The problem is that without appropriate barrier, the compiler
might reload tp->fastopen_rsk and trigger a NULL deref.

request sockets are protected by RCU, we can simply add
the missing annotations and barriers to solve the issue.

Fixes: 168a8f5805 ("tcp: TCP Fast Open Server - main code path")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-13 10:13:08 -07:00
..
acpi
asm-generic Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-09-28 08:14:15 -07:00
clocksource
crypto Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity 2019-09-27 19:37:27 -07:00
drm
dt-bindings
keys
kvm
linux tcp: add rcu protection around tp->fastopen_rsk 2019-10-13 10:13:08 -07:00
math-emu
media
misc
net net: silence KCSAN warnings about sk->sk_backlog.len reads 2019-10-09 21:43:00 -07:00
pcmcia
ras
rdma
scsi
soc
sound
target
trace rxrpc: Fix trace-after-put looking at the put call record 2019-10-07 11:05:05 +01:00
uapi copy-struct-from-user-v5.4-rc2 2019-10-04 10:36:31 -07:00
vdso
video
xen xen: fixes and cleanups for 5.4-rc2 2019-10-04 11:13:09 -07:00
Kbuild - New Drivers 2019-09-23 19:37:49 -07:00