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Message #183323
[Bug 1248289] Re: Missing libunwind support in perf
This bug was fixed in the package linux - 4.4.0-24.43
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linux (4.4.0-24.43) xenial; urgency=low
[ Kamal Mostafa ]
* CVE-2016-1583 (LP: #1588871)
- ecryptfs: fix handling of directory opening
- SAUCE: proc: prevent stacking filesystems on top
- SAUCE: ecryptfs: forbid opening files without mmap handler
- SAUCE: sched: panic on corrupted stack end
* arm64: statically link rtc-efi (LP: #1583738)
- [Config] Link rtc-efi statically on arm64
-- Kamal Mostafa <kamal@xxxxxxxxxxxxx> Fri, 03 Jun 2016 10:02:16 -0700
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https://bugs.launchpad.net/bugs/1248289
Title:
Missing libunwind support in perf
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Status in linux source package in Yakkety:
Fix Released
Bug description:
Hi,
I'm trying to use perf's libunwind support in 13.04 with kernel
3.11.0-12-generic on amd64. Typically you can do this by using the
"-g dwarf" flag, but it appears the perf command included in linux-
tools-3.11.0-12-generic was not compiled with libunwind. This may be
as simple as the build machine didn't have libunwind installed.
Having dwarf support in perf with default Ubuntu kernels would be very
useful as it provides a way to get profiling information when
-fomitframepointer is used.
Relevant upstream code:
https://github.com/torvalds/linux/blob/v3.11/tools/perf/Makefile#L459
https://github.com/torvalds/linux/blob/v3.11/tools/perf/builtin-record.c#L758
Let me know if I can provide any other information.
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References