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Brendan Gregg
2015-07-02 15:27:47 -07:00
parent e203ba8c62
commit e2dc944e78
1 changed files with 2 additions and 3 deletions
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5
user/uprobe
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@@ -233,9 +233,8 @@ if (( opt_force == 0 && $maj < 4 )); then
Background: uprobes were first added in 3.5. I've tested them on 3.13,
and found them unsafe, as they can crash or lock up processes, which can
effectively lock up the system. On 4.0, uprobes seem much safer (but may
not be 100%). They may be safer (safe?) on other 3.x kernels, but I
don't know. You can use -F to force tracing, but you've been warned.
effectively lock up the system. On 4.0, uprobes seem much safer. You
can use -F to force tracing, but you've been warned.
END
exit
fi