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Leak memory in fbembed.dll [CORE4143] #4470

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firebird-automations opened this issue Jul 18, 2013 · 9 comments
Closed

Leak memory in fbembed.dll [CORE4143] #4470

firebird-automations opened this issue Jul 18, 2013 · 9 comments
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@hvlad
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affect-version: 2.5.2 component: engine fix-version: 2.5.3 priority: major qa: cannot be tested type: bug

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Submitted by: Maxim Kuzmin (cybermax)

Attachments:
test.dpr

Votes: 2

After multiply calls isc_attach_database, isc_detachDatabase and FreeLibrary(), embedded server crashes with various errors, examples:

 Access violation\.
	The code attempted to access a virtual
	address without privilege to do so\.
This exception will cause the Firebird server
to terminate abnormally\.

Database: F:\\D2010\\PROJECTS\\EMB\\DATA\.FDB
lock manager error
operating system directive \_beginthreadex failed
Недостаточно памяти для обработки команды\.

Commits: bf3009d FirebirdSQL/fbt-repository@a1e8407
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Commented by: @ibaseru

need to say that on some systems there are no access violation.
Application just stops after ~32k pairs of attach/detach calls, with error in firebird.log
IBASE Wed Jul 17 21:30:14 2013
Operating system call _beginthreadex failed. Error code 8

IBASE Wed Jul 17 21:30:14 2013
Database: F:\D2010\PROJECTS\EMB\DATA.FDB
lock manager error
operating system directive _beginthreadex failed
Not enough storage is available to process this command.

At that time attach/detach pair after ~32k iterations takes up to 62516 handles and 138mb of RAM.

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Commented by: @paulbeach

Please read CORE2978

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Modified by: @hvlad

assignee: Vlad Khorsun [ hvlad ]

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Commented by: @hvlad

Test application, big thanks for the initial version to the NickDee

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Modified by: @hvlad

Attachment: test.dpr [ 12354 ]

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Modified by: @hvlad

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 2.5.3 [ 10461 ]

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Modified by: @pcisar

status: Resolved [ 5 ] => Closed [ 6 ]

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Modified by: @pavel-zotov

status: Closed [ 6 ] => Closed [ 6 ]

QA Status: No test

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Modified by: @pavel-zotov

status: Closed [ 6 ] => Closed [ 6 ]

QA Status: No test => Cannot be tested

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affect-version: 2.5.2 component: engine fix-version: 2.5.3 priority: major qa: cannot be tested type: bug
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