This is still broken in 20.04.
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https://bugs.launchpad.net/bugs/1875274
Title:
usrmerge breaks perf symbol lookup
Status in linux package in Ubuntu:
Confirmed
Bug
apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362136/+files/UdevDb.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362137/+files/WifiSyslog.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362131/+files/ProcEnviron.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362126/+files/IwConfig.txt
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apport information
** Tags added: apport-collected eoan
** Description changed:
In 19.10, perf cannot find the symbols for libc even after installing
libc-dbg.
The symbols for libc are in:
/usr/lib/debug/lib/x86_64-linux-gnu/
but libc is in:
/usr/lib/x86_64-linux-gnu/
apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362132/+files/ProcInterrupts.txt
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apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362124/+files/CRDA.txt
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apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362135/+files/RfKill.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362130/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362127/+files/Lspci.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362125/+files/CurrentDmesg.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362128/+files/Lsusb.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362133/+files/ProcModules.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362129/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1875274/+attachment/5362134/+files/PulseList.txt
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Public bug reported:
In 19.10, perf cannot find the symbols for libc even after installing
libc-dbg.
The symbols for libc are in:
/usr/lib/debug/lib/x86_64-linux-gnu/
but libc is in:
/usr/lib/x86_64-linux-gnu/
so applications expect to find the corresponding symbols at:
This is the same issue as:
https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1808508
... where the fix was to manually path the Valgrind debug info lookup
path, but this doesn't seem feasible for every application that might
care about symbols. Better to put the symbols in the right place
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