diff options
Diffstat (limited to 'meta-networking/recipes-daemons/autofs/autofs/autofs-5.1.7-use-default-stack-size-for-threads.patch')
| -rw-r--r-- | meta-networking/recipes-daemons/autofs/autofs/autofs-5.1.7-use-default-stack-size-for-threads.patch | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/meta-networking/recipes-daemons/autofs/autofs/autofs-5.1.7-use-default-stack-size-for-threads.patch b/meta-networking/recipes-daemons/autofs/autofs/autofs-5.1.7-use-default-stack-size-for-threads.patch new file mode 100644 index 0000000000..b21e7c03bf --- /dev/null +++ b/meta-networking/recipes-daemons/autofs/autofs/autofs-5.1.7-use-default-stack-size-for-threads.patch @@ -0,0 +1,110 @@ +autofs-5.1.7 - use default stack size for threads + +From: Ian Kent <raven@themaw.net> + +autofs uses PTHREAD_STACK_MIN to set the stack size for threads it +creates. + +In two cases it is used to reduce the stack size for long running +service threads while it's used to allocate a larger stack for worker +threads that can have larger memory requirements. + +In recent glibc releases PTHREAD_STACK_MIN is no longer a constant +which can lead to unexpectedly different stack sizes on different +architectures and the autofs assumption it's a constant causes a +compile failure. + +The need to alter the stack size was due to observed stack overflow +which was thought to be due the thread stack being too small for autofs +and glibc alloca(3) usage. + +Quite a bit of that alloca(3) usage has been eliminated from autofs now, +particularly those that might be allocating largish amounts of storage, +and there has been a lot of change in glibc too so using the thread +default stack should be ok. + +Signed-off-by: Ian Kent <raven@themaw.net> +--- + CHANGELOG | 1 + + daemon/automount.c | 29 ----------------------------- + daemon/state.c | 6 +----- + lib/alarm.c | 6 +----- + 4 files changed, 3 insertions(+), 39 deletions(-) + +--- a/daemon/automount.c ++++ b/daemon/automount.c +@@ -92,7 +92,6 @@ static size_t kpkt_len; + /* Attributes for creating detached and joinable threads */ + pthread_attr_t th_attr; + pthread_attr_t th_attr_detached; +-size_t detached_thread_stack_size = PTHREAD_STACK_MIN * 144; + + struct master_readmap_cond mrc = { + PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, NULL, 0, 0, 0, 0}; +@@ -2617,34 +2616,6 @@ int main(int argc, char *argv[]) + if (start_pipefd[1] != -1) { + res = write(start_pipefd[1], pst_stat, sizeof(*pst_stat)); + close(start_pipefd[1]); +- } +- release_flag_file(); +- macro_free_global_table(); +- exit(1); +- } +- +-#ifdef _POSIX_THREAD_ATTR_STACKSIZE +- if (pthread_attr_setstacksize( +- &th_attr_detached, detached_thread_stack_size)) { +- logerr("%s: failed to set stack size thread attribute!", +- program); +- if (start_pipefd[1] != -1) { +- res = write(start_pipefd[1], pst_stat, sizeof(*pst_stat)); +- close(start_pipefd[1]); +- } +- release_flag_file(); +- macro_free_global_table(); +- exit(1); +- } +-#endif +- +- if (pthread_attr_getstacksize( +- &th_attr_detached, &detached_thread_stack_size)) { +- logerr("%s: failed to get detached thread stack size!", +- program); +- if (start_pipefd[1] != -1) { +- res = write(start_pipefd[1], pst_stat, sizeof(*pst_stat)); +- close(start_pipefd[1]); + } + release_flag_file(); + macro_free_global_table(); +--- a/daemon/state.c ++++ b/daemon/state.c +@@ -1173,12 +1173,8 @@ int st_start_handler(void) + status = pthread_attr_init(pattrs); + if (status) + pattrs = NULL; +- else { ++ else + pthread_attr_setdetachstate(pattrs, PTHREAD_CREATE_DETACHED); +-#ifdef _POSIX_THREAD_ATTR_STACKSIZE +- pthread_attr_setstacksize(pattrs, PTHREAD_STACK_MIN*4); +-#endif +- } + + status = pthread_create(&thid, pattrs, st_queue_handler, NULL); + +--- a/lib/alarm.c ++++ b/lib/alarm.c +@@ -270,12 +270,8 @@ int alarm_start_handler(void) + status = pthread_attr_init(pattrs); + if (status) + pattrs = NULL; +- else { ++ else + pthread_attr_setdetachstate(pattrs, PTHREAD_CREATE_DETACHED); +-#ifdef _POSIX_THREAD_ATTR_STACKSIZE +- pthread_attr_setstacksize(pattrs, PTHREAD_STACK_MIN*4); +-#endif +- } + + status = pthread_condattr_init(&condattrs); + if (status) |