** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2054362
Title:
ftrace:test.d--kprobe--kprobe_non_uniq_symbol.tc from
ubuntu_kselftests_ftrace failed on 5.4
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
New
Status in linux source package in Focal:
New
Bug description:
Issue found on B-hwe-5.4.0-173.191~18.04.1
This kprobe_non_uniq_symbol.tc test case came from stable update (bug
2049024) and landed in our Focal kernel since Ubuntu-5.4.0-173.191
So this is not a regression, but a new test case.
Test log:
Running './ftracetest -vvv test.d/kprobe/kprobe_non_uniq_symbol.tc'
=== Ftrace unit tests ===
+ initialize_ftrace
+ disable_tracing
+ echo 0
+ reset_tracer
+ echo nop
+ reset_trigger
+ [ -d events/synthetic ]
...
+ read line
...
+ read line
...
+ reset_events_filter
+ read line
...
+ reset_ftrace_filter
+ [ ! -f set_ftrace_filter ]
+ echo
+ grep -v ^# set_ftrace_filter
+ read t
+ disable_events
+ echo 0
+ [ -f set_event_pid ]
+ echo
+ [ -f set_ftrace_pid ]
+ echo
+ [ -f set_ftrace_notrace ]
+ echo
+ [ -f set_graph_function ]
[1] Test failure of registering kprobe on non unique symbol
+ echo
+ tee set_graph_function set_graph_notrace
+ [ -f stack_trace_filter ]
+ echo
+ [ -f kprobe_events ]
+ echo
+ [ -f uprobe_events ]
+ echo
+ [ -f synthetic_events ]
+ echo
+ [ -f snapshot ]
+ echo 0
+ clear_trace
+ echo
+ enable_tracing
+ echo 1
+ .
/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_ftrace/src/linux/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc
+ SYMBOL=name_show
+ grep -c -E [[:alnum:]]+ t name_show /proc/kallsyms
+ [ 14 -le 1 ]
+ echo p:test_non_unique name_show
[FAIL]
# of passed: 0
# of failed: 1
# of unresolved: 0
# of untested: 0
# of unsupported: 0
# of xfailed: 0
# of undefined(test bug): 0
I think we're probably missing
https://github.com/torvalds/linux/commit/b022f0c7e404887a7c5229788fc99eff9f9a80d5
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