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[Bug 1808565] Re: Reading /proc/self/task/<pid>/maps is not remapped to
From: |
Peter Maydell |
Subject: |
[Bug 1808565] Re: Reading /proc/self/task/<pid>/maps is not remapped to the target |
Date: |
Tue, 20 Apr 2021 09:22:57 -0000 |
Code inspection shows we still don't handle /proc/self/task.
** Changed in: qemu
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1808565
Title:
Reading /proc/self/task/<pid>/maps is not remapped to the target
Status in QEMU:
Confirmed
Bug description:
Seeing this in qemu-user 3.1.0
The code in is_proc_myself which supports remapping of /proc/self/maps
and /proc/<pid>/maps does not support remapping of
/proc/self/task/<pid>/maps or /proc/<pid>/task/<pid>/maps. Extending
is_proc_myself to cover these cases causes the maps to be rewritten
correctly.
These are useful in multithreaded programs to avoid freezing the
entire program to capture the maps for a single tid.
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