41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
# HG changeset patch
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# User Maxim Dounin <mdounin@mdounin.ru>
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# Date 1309187571 -14400
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# Node ID 283a416b2235d5383c12a975edc8866f007fb628
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# Parent f5fc40783ddcbf4db33859ee2a9bce54cf32c350
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Core: protect from subrequest loops.
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Without protection subrequest loop results in r->count overflow and
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SIGSEGV. Protection was broken in 0.7.25.
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Note that this also limits number of parallel subrequests. This
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wasn't exactly the case before 0.7.25 as local subrequests were
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completed directly.
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See here for details:
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http://nginx.org/pipermail/nginx-ru/2010-February/032184.html
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diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
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--- a/src/http/ngx_http_core_module.c
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+++ b/src/http/ngx_http_core_module.c
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@@ -2287,7 +2287,6 @@ ngx_http_subrequest(ngx_http_request_t *
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sr->start_sec = tp->sec;
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sr->start_msec = tp->msec;
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- r->main->subrequests++;
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r->main->count++;
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*psr = sr;
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diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
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--- a/src/http/ngx_http_request.c
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+++ b/src/http/ngx_http_request.c
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@@ -1981,6 +1981,7 @@ ngx_http_finalize_request(ngx_http_reque
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if (r == c->data) {
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r->main->count--;
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+ r->main->subrequests++;
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if (!r->logged) {
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