On 4/11/22 07:20, zhangfei....@foxmail.com wrote:
>> Is there nothing before this call trace? Usually there will be at least
>> some warning text.
> I added dump_stack() in ioasid_free.
Hold on a sec, though...
What's the *problem* here? Did something break or are you just saying
that something looks weird to _you_?
For instance, if we have:
nginx: ioasid_alloc()==1
fork(); // spawn the daemon
exit();
ioasid_free(1);
and then a moment later:
lynx: ioasid_alloc()==1
fork();
exit();
ioasid_free(1);
There's no problem. The original nginx process with ioasid==1 exited.
The fact that *some* process called nginx is still running doesn't mean
that it still has a reference to asid==1.
Are you sure the nginx process that allocated the ASID is the same
process you see in ps?
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