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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2021-04-19 14:23:12 -0400
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2021-04-20 10:56:58 -0400
commit0e1e71d34901a633825cd5ae78efaf8abd9215c6 (patch)
tree7ac7cfdfc3ba731c4e25735355bdedaf78a596d5 /tools/perf
parent8db403b9631331ef1d5e302cdf353c48849ca9d5 (diff)
tracing: Fix checking event hash pointer logic when tp_printk is enabled
Pointers in events that are printed are unhashed if the flags allow it, and the logic to do so is called before processing the event output from the raw ring buffer. In most cases, this is done when a user reads one of the trace files. But if tp_printk is added on the kernel command line, this logic is done for trace events when they are triggered, and their output goes out via printk. The unhash logic (and even the validation of the output) did not support the tp_printk output, and would crash. Link: https://lore.kernel.org/linux-tegra/9835d9f1-8d3a-3440-c53f-516c2606ad07@nvidia.com/ Fixes: efbbdaa22bb7 ("tracing: Show real address for trace event arguments") Reported-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf')
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