121 lines
3.8 KiB
Diff
121 lines
3.8 KiB
Diff
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(-)
|
|
|
|
--- autofs-5.1.7.orig/CHANGELOG
|
|
+++ autofs-5.1.7/CHANGELOG
|
|
@@ -79,6 +79,7 @@
|
|
- fix nonstrict offset mount fail handling.
|
|
- fix concat_options() error handling.
|
|
- eliminate some more alloca usage.
|
|
+- use default stack size for threads.
|
|
|
|
25/01/2021 autofs-5.1.7
|
|
- make bind mounts propagation slave by default.
|
|
--- autofs-5.1.7.orig/daemon/automount.c
|
|
+++ autofs-5.1.7/daemon/automount.c
|
|
@@ -84,7 +84,6 @@ 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};
|
|
@@ -2614,34 +2613,6 @@ 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();
|
|
--- autofs-5.1.7.orig/daemon/state.c
|
|
+++ autofs-5.1.7/daemon/state.c
|
|
@@ -1177,12 +1177,8 @@ 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);
|
|
|
|
--- autofs-5.1.7.orig/lib/alarm.c
|
|
+++ autofs-5.1.7/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)
|