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view src/os/unix/ngx_setaffinity.h @ 6574:7eb19447b2de
Core: skip special buffers on writing (ticket #981).
A special last buffer with cl->buf->pos set to NULL can be present in
a chain when writing request body if chunked encoding was used. This
resulted in a NULL pointer dereference if it happened to be the only
buffer left after a do...while loop iteration in ngx_write_chain_to_file().
The problem originally appeared in nginx 1.3.9 with chunked encoding
support. Additionally, rev. 3832b608dc8d (nginx 1.9.13) changed the
minimum number of buffers to trigger this from IOV_MAX (typically 1024)
to NGX_IOVS_PREALLOCATE (typically 64).
Fix is to skip such buffers in ngx_chain_to_iovec(), much like it is
done in other places.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 31 May 2016 05:13:30 +0300 |
parents | 7296b38f6416 |
children |
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/* * Copyright (C) Nginx, Inc. */ #ifndef _NGX_SETAFFINITY_H_INCLUDED_ #define _NGX_SETAFFINITY_H_INCLUDED_ #if (NGX_HAVE_SCHED_SETAFFINITY || NGX_HAVE_CPUSET_SETAFFINITY) #define NGX_HAVE_CPU_AFFINITY 1 #if (NGX_HAVE_SCHED_SETAFFINITY) typedef cpu_set_t ngx_cpuset_t; #elif (NGX_HAVE_CPUSET_SETAFFINITY) #include <sys/cpuset.h> typedef cpuset_t ngx_cpuset_t; #endif void ngx_setaffinity(ngx_cpuset_t *cpu_affinity, ngx_log_t *log); #else #define ngx_setaffinity(cpu_affinity, log) typedef uint64_t ngx_cpuset_t; #endif #endif /* _NGX_SETAFFINITY_H_INCLUDED_ */