Re: [stable 4.19] [PANIC]: tracing: Centralize preemptirq tracepoints and unify their usage

On Fri, Sep 25, 2020 at 10:13:05AM +0530, Naresh Kamboju wrote:

...

From stable rc 4.18.1 onwards to today's stable rc 4.19.147

There are two problems while running LTP tracing tests

1. kernel panic on i386, qemu_i386, x86_64 and qemu_x86_64 [1]
2. " segfault at 0 ip " and "Code: Bad RIP value" on x86_64 and qemu_x86_64 [2]

Please refer to the full test logs from below links.

The first bad commit found by git bisect. commit: c3bc8fd637a9623f5c507bd18f9677effbddf584 tracing: Centralize preemptirq tracepoints and unify their usage

Reported-by: Naresh Kamboju naresh.kamboju@linaro.org

So this also is reproducable in 5.4 and Linus's tree right now?

Or are newer kernels working fine?

thanks,

greg k-h