Worker process core dumped

Maxim Dounin mdounin at
Wed Sep 9 13:01:55 UTC 2020


On Tue, Sep 08, 2020 at 10:49:44PM -0400, allenhe wrote:

> I found most times using "r" after ngx_http_free_request() won't have any
> problem. the core dump would happen once for a while in the high load.

That's because use-after-free errors not always result in 
segmentation faults as long as the memory isn't yet returned to 
the OS by the memory allocator.  To get consistent errors, consider using 
AddressSanitizer (

Maxim Dounin

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