Public bug reported:
[Impact]
perf crashes when monitoring an application for non-system-wide uncore events.
[Test Case]
Before fix:
ubuntu@starbuck:~$ sudo perf stat -e l1d_cache_rd -- sleep 1
*** Error in `/usr/lib/linux-tools/4.13.0-31.34-generic/perf': free(): invalid
next size (fast): 0x00000000315f6e80 ***
Aborted
After fix:
ubuntu@starbuck:~$ sudo perf stat -e l1d_cache_rd -- sleep 1
Performance counter stats for 'sleep 1':
159,004 l1d_cache_rd
1.001223072 seconds time elapsed
[Regression Risk]
The fix involves 2 clean cherry picks from upstream to the perf utility, so any
regressions introduced by them should have a straightforward support path w/
upstream.
** Affects: linux (Ubuntu)
Importance: Medium
Assignee: dann frazier (dannf)
Status: Fix Released
** Affects: linux (Ubuntu Artful)
Importance: Medium
Assignee: dann frazier (dannf)
Status: In Progress
** Also affects: linux (Ubuntu Artful)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Artful)
Status: New => In Progress
** Changed in: linux (Ubuntu Artful)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Artful)
Assignee: (unassigned) => dann frazier (dannf)
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https://bugs.launchpad.net/bugs/1745246
Title:
perf stat segfaults on uncore events w/o -a
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Artful:
In Progress
Bug description:
[Impact]
perf crashes when monitoring an application for non-system-wide uncore events.
[Test Case]
Before fix:
ubuntu@starbuck:~$ sudo perf stat -e l1d_cache_rd -- sleep 1
*** Error in `/usr/lib/linux-tools/4.13.0-31.34-generic/perf': free():
invalid next size (fast): 0x00000000315f6e80 ***
Aborted
After fix:
ubuntu@starbuck:~$ sudo perf stat -e l1d_cache_rd -- sleep 1
Performance counter stats for 'sleep 1':
159,004 l1d_cache_rd
1.001223072 seconds time elapsed
[Regression Risk]
The fix involves 2 clean cherry picks from upstream to the perf utility, so
any regressions introduced by them should have a straightforward support path
w/ upstream.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1745246/+subscriptions
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