Mercurial > hg > nginx
annotate docs/html/50x.html @ 7048:80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Resolving an SRV record includes resolving its host names in subrequests.
Previously, if memory allocation failed while reporting a subrequest result
after receiving a response from a DNS server, the SRV resolve handler was
called immediately with the NGX_ERROR state. However, if the SRV record
included another copy of the resolved name, it was reported once again.
This could trigger the use-after-free memory access after SRV resolve
handler freed the resolve context by calling ngx_resolve_name_done().
Now the SRV resolve handler is called only when all its subrequests are
completed.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Tue, 04 Jul 2017 18:07:29 +0300 |
parents | b5ba6f22a0fc |
children | 1cd63ae46243 |
rev | line source |
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4840
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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1 <!DOCTYPE html> |
657 | 2 <html> |
3 <head> | |
4840
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Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
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4 <title>Error</title> |
657 | 5 <style> |
4840
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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6 body { |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
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7 width: 35em; |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
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8 margin: 0 auto; |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
|
9 font-family: Tahoma, Verdana, Arial, sans-serif; |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
|
10 } |
657 | 11 </style> |
12 </head> | |
4840
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
|
13 <body> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
|
14 <h1>An error occurred.</h1> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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15 <p>Sorry, the page you are looking for is currently unavailable.<br/> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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16 Please try again later.</p> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
|
17 <p>If you are the system administrator of this resource then you should check |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
|
18 the <a href="http://nginx.org/r/error_log">error log</a> for details.</p> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
|
19 <p><em>Faithfully yours, nginx.</em></p> |
657 | 20 </body> |
21 </html> |