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Uninitialized local variables in sched_on_fork_calc_prev_burst_from_siblings #5

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raykzhao opened this issue Dec 9, 2022 · 2 comments
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Uninitialized local variables in sched_on_fork_calc_prev_burst_from_siblings #5

raykzhao opened this issue Dec 9, 2022 · 2 comments

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@raykzhao
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raykzhao commented Dec 9, 2022

Hi there,

The local variables sum, avg, and cnt in sched_on_fork_calc_prev_burst_from_siblings are not initialized. I get kernel panic in sched_fork after booting the kernel compiled with clang. Initializing these variables with 0 fix the issue.
@firelzrd
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firelzrd commented Dec 9, 2022

Thank you for reporting. I appreciate your contribution.
I have just pushed "clang-avgcalc-initvar" branch that includes your proposed fix.
Please try and see if the problem is gone.

@firelzrd
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Now that I haven't observed any failure reports after the fixed new version was released, I'm closing the issue.

@fsyy fsyy mentioned this issue Sep 19, 2023
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@raykzhao @firelzrd