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* [Bug libc/32215] New: Signal handlers after fork may encounter missing robust list
@ 2024-09-26 9:53 fweimer at redhat dot com
2024-09-26 9:53 ` [Bug libc/32215] Signal handlers after fork may encounter missing robust mutex list fweimer at redhat dot com
2024-09-26 15:51 ` cristian at rodriguez dot im
0 siblings, 2 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2024-09-26 9:53 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=32215
Bug ID: 32215
Summary: Signal handlers after fork may encounter missing
robust list
Product: glibc
Version: 2.41
Status: NEW
Severity: normal
Priority: P3
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The fork system call in Linux does not preserve the robust list pointer from
the parent process. Linux does this to prevent double-unlocking because
userspace should clear the robust list first. We currently do not disable
signals around fork/_Fork (like we do for thread creation), so this
intermittent state (missing robust list registration) is observable by
applications.
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* [Bug libc/32215] Signal handlers after fork may encounter missing robust mutex list
2024-09-26 9:53 [Bug libc/32215] New: Signal handlers after fork may encounter missing robust list fweimer at redhat dot com
@ 2024-09-26 9:53 ` fweimer at redhat dot com
2024-09-26 15:51 ` cristian at rodriguez dot im
1 sibling, 0 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2024-09-26 9:53 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=32215
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Signal handlers after fork |Signal handlers after fork
|may encounter missing |may encounter missing
|robust list |robust mutex list
CC| |fweimer at redhat dot com
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* [Bug libc/32215] Signal handlers after fork may encounter missing robust mutex list
2024-09-26 9:53 [Bug libc/32215] New: Signal handlers after fork may encounter missing robust list fweimer at redhat dot com
2024-09-26 9:53 ` [Bug libc/32215] Signal handlers after fork may encounter missing robust mutex list fweimer at redhat dot com
@ 2024-09-26 15:51 ` cristian at rodriguez dot im
1 sibling, 0 replies; 3+ messages in thread
From: cristian at rodriguez dot im @ 2024-09-26 15:51 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=32215
Cristian Rodríguez <cristian at rodriguez dot im> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |cristian at rodriguez dot im
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end of thread, other threads:[~2024-09-26 15:51 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2024-09-26 9:53 [Bug libc/32215] New: Signal handlers after fork may encounter missing robust list fweimer at redhat dot com
2024-09-26 9:53 ` [Bug libc/32215] Signal handlers after fork may encounter missing robust mutex list fweimer at redhat dot com
2024-09-26 15:51 ` cristian at rodriguez dot im
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