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Fixed premature background subrequest finalization. When "aio" or "aio threads" is used while processing the response body of an in-memory background subrequest, the subrequest could be finalized with an aio operation still in progress. Upon aio completion either parent request is woken or the old r->write_event_handler is called again. The latter may result in request errors. In either case post_subrequest handler is never called with the full response body, which is typically expected when using in-memory subrequests. Currently in nginx background subrequests are created by the upstream module and the mirror module. The issue does not manifest itself with these subrequests because they are header-only. But it can manifest itself with third-party modules which create in-memory background subrequests.
author Dmitry Volyntsev <xeioex@nginx.com>
date Mon, 02 Mar 2020 20:07:36 +0300
parents d620f497c50f
children
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


# Compaq C V6.5-207

ngx_include_opt="-I"

# warnings

CFLAGS="$CFLAGS -msg_enable level6 -msg_fatal level6"

CFLAGS="$CFLAGS -msg_disable unknownmacro"
CFLAGS="$CFLAGS -msg_disable unusedincl"
CFLAGS="$CFLAGS -msg_disable unnecincl"
CFLAGS="$CFLAGS -msg_disable nestincl"
CFLAGS="$CFLAGS -msg_disable strctpadding"
CFLAGS="$CFLAGS -msg_disable ansialiascast"
CFLAGS="$CFLAGS -msg_disable inlinestoclsmod"
CFLAGS="$CFLAGS -msg_disable cxxkeyword"
CFLAGS="$CFLAGS -msg_disable longlongsufx"
CFLAGS="$CFLAGS -msg_disable valuepres"

# STUB
CFLAGS="$CFLAGS -msg_disable truncintcast"
CFLAGS="$CFLAGS -msg_disable trunclongcast"

CFLAGS="$CFLAGS -msg_disable truncintasn"
CFLAGS="$CFLAGS -msg_disable trunclongint"
CFLAGS="$CFLAGS -msg_disable intconcastsgn"
CFLAGS="$CFLAGS -msg_disable intconstsign"
CFLAGS="$CFLAGS -msg_disable switchlong"
CFLAGS="$CFLAGS -msg_disable subscrbounds2"

CFLAGS="$CFLAGS -msg_disable hexoctunsign"

CFLAGS="$CFLAGS -msg_disable ignorecallval"
CFLAGS="$CFLAGS -msg_disable nonstandcast"
CFLAGS="$CFLAGS -msg_disable embedcomment"
CFLAGS="$CFLAGS -msg_disable unreachcode"
CFLAGS="$CFLAGS -msg_disable questcompare2"
CFLAGS="$CFLAGS -msg_disable unusedtop"
CFLAGS="$CFLAGS -msg_disable unrefdecl"

CFLAGS="$CFLAGS -msg_disable bitnotint"