xml memory leak

[chongwick]

Description

The following code:

<?php
$v_847 = STDOUT;
$v_848 = fclose($v_847,);
$v_2964 = new SoapServer($v_848,);

Resulted in this output:

=================================================================
==2545344==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 343 byte(s) in 1 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a27fe6b3 in xmlStrndup (/lib/x86_64-linux-gnu/libxml2.so.2+0xe36b3)

Indirect leak of 600 byte(s) in 5 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a277d5f4 in xmlNewNode (/lib/x86_64-linux-gnu/libxml2.so.2+0x625f4)

Indirect leak of 176 byte(s) in 1 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a277d217 in xmlNewDoc (/lib/x86_64-linux-gnu/libxml2.so.2+0x62217)

Indirect leak of 121 byte(s) in 6 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a27fe6b3 in xmlStrndup (/lib/x86_64-linux-gnu/libxml2.so.2+0xe36b3)

Indirect leak of 120 byte(s) in 1 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a277d87b in xmlNewText (/lib/x86_64-linux-gnu/libxml2.so.2+0x6287b)

Indirect leak of 120 byte(s) in 1 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a277e9eb in xmlNewTextLen (/lib/x86_64-linux-gnu/libxml2.so.2+0x639eb)

Indirect leak of 63 byte(s) in 3 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a27fe7c2 in xmlStrdup (/lib/x86_64-linux-gnu/libxml2.so.2+0xe37c2)

Indirect leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a277cb0d in xmlNewNs (/lib/x86_64-linux-gnu/libxml2.so.2+0x61b0d)

Indirect leak of 6 byte(s) in 1 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a27fe962 in xmlCharStrdup (/lib/x86_64-linux-gnu/libxml2.so.2+0xe3962)

Indirect leak of 5 byte(s) in 1 object(s) allocated from:
    #0 0x6829fd in malloc (/home/w023dtc/nightly_php/php-src/sapi/cli/php+0x6829fd)
    #1 0x14a4a280142b in xmlBufResize (/lib/x86_64-linux-gnu/libxml2.so.2+0xe642b)

SUMMARY: AddressSanitizer: 1602 byte(s) leaked in 21 allocation(s).

PHP Version

nightly

Operating System

ubuntu 22.04

[chongwick]

I assume this is invalid, but just to be sure...

[devnexen]

it seems to me a leak (solved since ?) in libxml2/xmlDocDumpFormatMemoryEnc failure, on xmlAllocOutputBuffer part more specifically maybe. I see a fix back from 2023 though.

[Girgias]

Probably can be reduced to:

<?php
fclose(STDOUT);
new SoapServer();

[chongwick]

Has anyone else been able to reproduce this? If I move the file, I trigger #17164

[devnexen]

Yes I was able to, but to me it is not a php bug.

[ndossche]

Essentially a duplicate to #19876 combined with conceptually the same issue as #14044

(...) I trigger #17164

I still haven't been able to trigger this, and should not be possible to fail this assert from my understanding of the manpages :/