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- This patch increases the stack size for pthreads from 80 KB, the default
- stack size for musl libc, to 2 MB. The default stack size for glibc is 8 MB.
-
- OpenDKIM, an application that depends on libmilter, segfaults if the stack
- size for pthreads is left unchanged at the musl default value of 80 KB.
- Apparently, OpenDKIM allocates blocks of 64 KB multiple times, which causes
- libmilter and therefore OpenDKIM to crash:
- https://git.alpinelinux.org/cgit/aports/commit/?id=95724d1bd53ae87f72e6388cb7323dbd8f84be9d
-
- This patch follows the patch suggested by an Alpine Linux user in bug report
- above. Also, a bug report has been filed upstream:
- https://sourceforge.net/p/opendkim/bugs/258/
-
-
- Index: sendmail-8.15.2/libmilter/libmilter.h
- ===================================================================
- --- sendmail-8.15.2.orig/libmilter/libmilter.h
- +++ sendmail-8.15.2/libmilter/libmilter.h
- @@ -127,10 +127,10 @@ struct smfi_str
- # define MI_SOCK_READ(s, b, l) read(s, b, l)
- # define MI_SOCK_READ_FAIL(x) ((x) < 0)
- # define MI_SOCK_WRITE(s, b, l) write(s, b, l)
- -
- -# define thread_create(ptid,wr,arg) pthread_create(ptid, NULL, wr, arg)
- # define sthread_get_id() pthread_self()
-
- +extern int thread_create(pthread_t *ptid, void *(*wr) (void *), void *arg);
- +
- typedef pthread_mutex_t smutex_t;
- # define smutex_init(mp) (pthread_mutex_init(mp, NULL) == 0)
- # define smutex_destroy(mp) (pthread_mutex_destroy(mp) == 0)
- Index: sendmail-8.15.2/libmilter/main.c
- ===================================================================
- --- sendmail-8.15.2.orig/libmilter/main.c
- +++ sendmail-8.15.2/libmilter/main.c
- @@ -16,6 +16,12 @@ SM_RCSID("@(#)$Id: main.c,v 8.85 2013-11
- #include <fcntl.h>
- #include <sys/stat.h>
-
- +int thread_create(pthread_t *ptid, void *(*wr) (void *), void *arg) {
- + pthread_attr_t attr;
- + pthread_attr_init(&attr);
- + pthread_attr_setstacksize(&attr,2*1024*1024);
- + return pthread_create(ptid, &attr, wr, arg);
- +}
-
- static smfiDesc_ptr smfi = NULL;
-
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