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authorEric Dumazet <edumazet@google.com>2017-10-22 22:33:57 +0300
committerDavid S. Miller <davem@davemloft.net>2017-10-23 07:45:25 +0300
commita6ca7abe53633d08eea1c6756cb49c9b2d4c90bf (patch)
tree800cd8cbbd05b2d687ed7fc8d5374e318e3ba985 /Documentation/perf
parent3a91d29f20276fa7cd4d0c9c7f3e78b30708159d (diff)
downloadlinux-a6ca7abe53633d08eea1c6756cb49c9b2d4c90bf.tar.xz
tcp/dccp: fix lockdep splat in inet_csk_route_req()
This patch fixes the following lockdep splat in inet_csk_route_req() lockdep_rcu_suspicious inet_csk_route_req tcp_v4_send_synack tcp_rtx_synack inet_rtx_syn_ack tcp_fastopen_synack_time tcp_retransmit_timer tcp_write_timer_handler tcp_write_timer call_timer_fn Thread running inet_csk_route_req() owns a reference on the request socket, so we have the guarantee ireq->ireq_opt wont be changed or freed. lockdep can enforce this invariant for us. Fixes: c92e8c02fe66 ("tcp/dccp: fix ireq->opt races") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/perf')
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