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* [Bug dynamic-link/30619] New: Support dlopen after multi-threaded fork in more cases
@ 2023-07-06 17:24 fweimer at redhat dot com
2023-07-06 17:25 ` [Bug dynamic-link/30619] " fweimer at redhat dot com
0 siblings, 1 reply; 2+ messages in thread
From: fweimer at redhat dot com @ 2023-07-06 17:24 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=30619
Bug ID: 30619
Summary: Support dlopen after multi-threaded fork in more cases
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
The dlopen function is used internally in various places (backtrace, iconv,
pthread_exit, NSS). It would be preferable if it worked after a multi-threaded
fork.
Right now, we get various hangs, or an assertion failure:
Inconsistency detected by ld.so: dl-open.c: 583: dl_open_worker_begin:
Assertion `r_state == RT_CONSISTENT' failed!
Bug 24941 is an example of a surprising use of NSS. There might be others.
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* [Bug dynamic-link/30619] Support dlopen after multi-threaded fork in more cases
2023-07-06 17:24 [Bug dynamic-link/30619] New: Support dlopen after multi-threaded fork in more cases fweimer at redhat dot com
@ 2023-07-06 17:25 ` fweimer at redhat dot com
0 siblings, 0 replies; 2+ messages in thread
From: fweimer at redhat dot com @ 2023-07-06 17:25 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=30619
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Created attachment 14955
--> https://sourceware.org/bugzilla/attachment.cgi?id=14955&action=edit
Patch with test case
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2023-07-06 17:24 [Bug dynamic-link/30619] New: Support dlopen after multi-threaded fork in more cases fweimer at redhat dot com
2023-07-06 17:25 ` [Bug dynamic-link/30619] " fweimer at redhat dot com
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