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Potential bug in ngx_event.c

Rian Hunter
August 23, 2019 02:02PM
Hello,

While browsing the source I noticed something that seemed wrong, even
though I haven't observed any buggy behavior or have reproduced this bug
myself. In ngx_event.c there is a line:

if (ngx_shmtx_create(&ngx_accept_mutex, (ngx_shmtx_sh_t *) shared,
cycle->lock_file.data)
!= NGX_OK)
{
return NGX_ERROR;
}

ngx_shmtx_create() is passed &ngx_accept_mutex, but this must be a
pointer to a shared memory region otherwise the sem_wait()/sem_post()
calls in ngx_shmtx.c will not function correctly. &ngx_accept_mutex is a
pointer to BSS, ngx_accept_mutex_ptr is a pointer to shared memory. Is
this intentional?

Rian
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Subject Author Views Posted

Potential bug in ngx_event.c

Rian Hunter 591 August 23, 2019 02:02PM

Re: Potential bug in ngx_event.c

Maxim Dounin 265 August 30, 2019 10:20AM

Re: Potential bug in ngx_event.c

Rian Hunter 267 August 30, 2019 09:28PM

Re: Potential bug in ngx_event.c

Maxim Dounin 265 August 31, 2019 02:30PM

Re: Potential bug in ngx_event.c

Rian Hunter 258 September 01, 2019 02:46PM

Re: Potential bug in ngx_event.c

Maxim Dounin 260 September 02, 2019 12:24PM

Re: Potential bug in ngx_event.c

Rian Hunter 289 September 02, 2019 12:50PM



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