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authorEric Dumazet <edumazet@google.com>2019-10-09 14:51:20 -0700
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-10-09 21:34:31 -0700
commit60b173ca3d1cd1782bd0096dc17298ec242f6fb1 (patch)
tree63dcac48023790e1acfb33271d47d5d4132ca55c /include/net/tcp.h
parentnet: avoid possible false sharing in sk_leave_memory_pressure() (diff)
downloadlinux-dev-60b173ca3d1cd1782bd0096dc17298ec242f6fb1.tar.xz
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net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head
reqsk_queue_empty() is called from inet_csk_listen_poll() while other cpus might write ->rskq_accept_head value. Use {READ|WRITE}_ONCE() to avoid compiler tricks and potential KCSAN splats. Fixes: fff1f3001cc5 ("tcp: add a spinlock to protect struct request_sock_queue") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
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