If I do
trace-cmd record -T -O userstacktrace -e all -F lxc-execute -n fedora
/bin/bash
the userstacktrace entries all show up as all zeros, like this:
lxc-execute-4020 [001] 4365.325591: user_stack: =>
(00000000)
=> (00000000)
=> (00000000)
=> (00000000)
=> (00000000)
=> (00000000)
=> (00000000)
=> (00000000)
in trace-report.
According to /boot/config-`uname -r`
CONFIG_USER_STACKTRACE_SUPPORT=y
In my last email to the list I was fooled by a kernel config option that
showed as enabled in /boot/config-`uname r`, but actually couldn't have
been enabled because it was incompatible with another config option. But
Kconfig doesn't show this option being incompatible with anything.
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