Comments (7)
vitalybuka
commented on May 18, 2024
This happens after upgrade to glibc 2.38
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vitalybuka
commented on May 18, 2024
Does this look familiar @ramosian-glider @dvyukov ?
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vitalybuka
commented on May 18, 2024
git log glibc-2.37...glibc-2.38 -- /usr/local/google/home/vitalybuka/src/glibc/libio/genops.c
commit bminor/glibc@af130d2
Author: Andreas Schwab [email protected]
Date: Tue Jan 30 10:16:00 2018 +0100
Always do locking when accessing streams (bug 15142, bug 14697)
Now that abort no longer calls fflush there is no reason to avoid locking
the stdio streams anywhere. This fixes a conformance issue and potential
heap corruption during exit.
commit bminor/glibc@8867734
Author: Adhemerval Zanella Netto [email protected]
Date: Tue Dec 27 18:11:42 2022 -0300
Move libc_freeres_ptrs and libc_subfreeres to hidden/weak functions
They are both used by __libc_freeres to free all library malloc
allocated resources to help tooling like mtrace or valgrind with
memory leak tracking.
The current scheme uses assembly markers and linker script entries
to consolidate the free routine function pointers in the RELRO segment
and to be freed buffers in BSS.
This patch changes it to use specific free functions for
libc_freeres_ptrs buffers and call the function pointer array directly
with call_function_static_weak.
It allows the removal of both the internal macros and the linker
script sections.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Carlos O'Donell <[email protected]>
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vitalybuka
commented on May 18, 2024
Probably bminor/glibc@af130d2
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vitalybuka
commented on May 18, 2024
I believe the test is invalid after this changes.
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dvyukov
commented on May 18, 2024
It hangs w/o tsan as well, right?
Does this mean a program generally cannot exit if any of the threads/libraries doing blocking stream calls (e.g. reading from stdio)? This looks restrictive.
Asked in the issue: https://sourceware.org/bugzilla/show_bug.cgi?id=15142
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vitalybuka
commented on May 18, 2024
It hangs w/o tsan as well, right?
Does this mean a program generally cannot exit if any of the threads/libraries doing blocking stream calls (e.g. reading from stdio)? This looks restrictive.
Asked in the issue: https://sourceware.org/bugzilla/show_bug.cgi?id=15142
Actually it does not hang without tsan.
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