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Baptiste Lepers c213d85cae rxrpc: Call state should be read with READ_ONCE() under some circumstances
[ Upstream commit a95d25dd7b94a5ba18246da09b4218f132fed60e ]

The call state may be changed at any time by the data-ready routine in
response to received packets, so if the call state is to be read and acted
upon several times in a function, READ_ONCE() must be used unless the call
state lock is held.

As it happens, we used READ_ONCE() to read the state a few lines above the
unmarked read in rxrpc_input_data(), so use that value rather than
re-reading it.

Fixes: a158bdd324 ("rxrpc: Fix call timeouts")
Signed-off-by: Baptiste Lepers <baptiste.lepers@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/161046715522.2450566.488819910256264150.stgit@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-23 15:57:59 +01:00
arch ARM: picoxcell: fix missing interrupt-parent properties 2021-01-19 18:26:16 +01:00
block bfq: Fix computation of shallow depth 2021-01-19 18:26:15 +01:00
certs
crypto crypto: asym_tpm: correct zero out potential secrets 2021-01-12 20:16:17 +01:00
Documentation
drivers rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM request 2021-01-23 15:57:58 +01:00
fs nfsd4: readdirplus shouldn't return parent of export 2021-01-23 15:57:56 +01:00
include net: skbuff: disambiguate argument and member for skb_list_walk_safe helper 2021-01-23 15:57:57 +01:00
init
ipc
kernel bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback 2021-01-23 15:57:56 +01:00
lib lib/raid6: Let $(UNROLL) rules work with macOS userland 2021-01-19 18:26:15 +01:00
LICENSES
mm mm, slub: consider rest of partial list if acquire_slab() fails 2021-01-19 18:26:18 +01:00
net rxrpc: Call state should be read with READ_ONCE() under some circumstances 2021-01-23 15:57:59 +01:00
samples
scripts
security dump_common_audit_data(): fix racy accesses to ->d_name 2021-01-19 18:26:16 +01:00
sound ALSA: firewire-tascam: Fix integer overflow in midi_port_work() 2021-01-19 18:26:19 +01:00
tools perf intel-pt: Fix 'CPU too large' error 2021-01-19 18:26:16 +01:00
usr
virt kvm: check tlbs_dirty directly 2021-01-12 20:16:22 +01:00
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Makefile Linux 5.4.91 2021-01-19 18:26:19 +01:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.