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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1769027
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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1769027
Title:
perf record crash: refcount_inc assertion failed
Status in linux package in Ubuntu:
Incomplete
Bug description:
Trying to run perf record ... --cgroup=mycgroup causes an immediate assertion
failure:
refcount_inc: Assertion `!(!refcount_inc_not_zero(r))' failed.
Confirmed fixed by patching my linux-tools package with this upstream
commit (on top of the commit in bug #1767204):
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-
stable.git/commit/tools/perf/util/cgroup.c?id=cd8dd032f61abeb08d2c03bab4968a9de231a1be
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