#21721: Trunk: kernel tracing: trace-cmd causes segmentation fault
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Reporter: DerMc | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: packages | Version: Trunk
Keywords: |
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I made a build of trunk this morning with kernel tracing enabled. I ssh to
the router and try to run trace-cmd:
root@OWRT:/mnt/usb# trace-cmd record -e mac80211
/sys/kernel/tracing/events/mac80211/filter
/sys/kernel/tracing/events/*/mac80211/filter
Segmentation fault
root@OWRT:/mnt/usb#
Syslog shows:
Wed Jan 27 10:57:48 2016 kern.info kernel: [ 993.563810]
Wed Jan 27 10:57:48 2016 kern.info kernel: [ 993.563810] do_page_fault():
sending SIGSEGV to trace-cmd for invalid read access from 00000000
Wed Jan 27 10:57:48 2016 kern.info kernel: [ 993.573115] epc = 777419e0
in libc.so[776cc000+90000]
Wed Jan 27 10:57:48 2016 kern.info kernel: [ 993.578501] ra = 00406f38
in trace-cmd[400000+37000]
Wed Jan 27 10:57:48 2016 kern.info kernel: [ 993.583697]
Any ideas how to get ftrace or trace-cmd working??
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Ticket URL: <https://dev.openwrt.org/ticket/21721>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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