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Posted to commits@nuttx.apache.org by "husong2 (via GitHub)" <gi...@apache.org> on 2025/12/02 06:31:59 UTC
[I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h1><pre>
husong2 opened a new issue, #17418:
URL: https://github.com/apache/nuttx/issues/17418
### Description / Steps to reproduce the issue
If there is a sleep call in a child thread, a crash will occur. The test case is as follows:
```c
#define TIMEOUT 5 /* Timeout value of 5 seconds. */
#define INTHREAD 0 /* Control going to or is already for Thread */
#define INMAIN 1 /* Control going to or is already for Main */
static int sem1; /* Manual semaphore */
static void *a_thread_func(void *arg)
{
printf("a_thread_func entry \n");
/* Indicate to main() that the thread was created. */
sem1 = INTHREAD;
/* Wait for main to detach change the attribute object and try and detach this thread.
* Wait for a timeout value of 10 seconds before timing out if the thread was not able
* to be detached. */
// sleep(TIMEOUT);
printf("a_thread_func entry 2222\n");
printf
("Test FAILED: Did not detach the thread, main still waiting for it to end execution.\n");
pthread_exit((void *)PTS_FAIL);
return NULL;
}
int main(void)
{
pthread_t new_th;
pthread_attr_t new_attr;
int ret_val;
/* Initializing */
sem1 = INMAIN;
if (pthread_attr_init(&new_attr) != 0) {
perror("Cannot initialize attribute object\n");
return PTS_UNRESOLVED;
}
/* Create a new thread passing it the new attribute object */
if (pthread_create(&new_th, &new_attr, a_thread_func, NULL) != 0) {
perror("Error creating thread\n");
return PTS_UNRESOLVED;
}
/* Wait for thread to indicate that the start routine for the thread has started. */
while (sem1 == INMAIN)
sleep(1);
/* If pthread_detach fails, that means that the test fails as well. */
ret_val = pthread_detach(new_th);
if (ret_val != 0) {
/* Thread is already detached. */
if (ret_val == EINVAL) {
printf("Test FAILED\n");
return PTS_FAIL;
}
/* pthread_detach() failed for another reason. */
else {
printf("Error in pthread_detach(), error: %d\n",
ret_val);
return PTS_UNRESOLVED;
}
}
printf("Test PASSED\n");
printf("Test PASSED 2222 \n");
return PTS_PASS;
}
```
The specific logic is as follows: When the process starts to exit by calling exit(), the main thread will be removed from the group. The call chain is as follows:
```text
#0 group_leave (tcb=tcb@entry=0x412a1470) at ../../nuttx/sched/group/group_leave.c:195
#1 0x0012a32e in nxtask_exithook (tcb=tcb@entry=0x412a1470, status=status@entry=0) at ../../nuttx/sched/task/task_exithook.c:481
#2 0x0012ad78 in _exit (status=112, status@entry=1093276784) at ../../nuttx/sched/task/exit.c:106
#3 0x001bb22c in exit (status=1093276784) at ../../nuttx/libs/libc/stdlib/lib_exit.c:126
#4 0x001b92bc in nxtask_startup (entrypt=entrypt@entry=0x412a1470, argc=<optimized out>, argv=<optimized out>) at ../../nuttx/libs/libc/sched/task_startup.c:66
#5 0x00129e14 in nxtask_start () at ../../nuttx/sched/task/task_start.c:104
#6 0x00000000 in ?? ()
```
Then, when the child thread executes sleep(), it will also trigger the exit process: the child thread is removed from the group and its TCB is deleted. At this point, since the TCB and the group are allocated together in memory, the memory space of the group will be deleted along with the TCB. The call chain is as follows:
```text
#0 group_leave (tcb=tcb@entry=0x412a1a28) at ../../nuttx/sched/group/group_leave.c:195
#1 0x0012a32e in nxtask_exithook (tcb=tcb@entry=0x412a1a28, status=status@entry=0) at ../../nuttx/sched/task/task_exithook.c:481
#2 0x001209b0 in nx_pthread_exit (exit_value=exit_value@entry=0xffffffff) at ../../nuttx/sched/pthread/pthread_exit.c:123
#3 0x00116726 in pthread_exit (exit_value=exit_value@entry=0xffffffff) at ../../nuttx/libs/libc/pthread/pthread_exit.c:71
#4 0x00111084 in leave_cancellation_point () at ../../nuttx/libs/libc/sched/task_cancelpt.c:200
#5 0x00134238 in clock_nanosleep (clockid=clockid@entry=0, flags=flags@entry=0, rqtp=rqtp@entry=0x412a2ec8, rmtp=rmtp@entry=0x412a2ed8)
at ../../nuttx/sched/signal/sig_nanosleep.c:208
#6 0x004256c0 in sleep (seconds=seconds@entry=5) at ../../nuttx/libs/libc/unistd/lib_sleep.c:112
#7 0x00211d0e in a_thread_func (arg=<error reading variable: value has been optimized out>)
at ../../apps/testing/ltp/ltp/testcases/open_posix_testsuite/conformance/interfaces/pthread_attr_init/2-1.c:46
#8 0x004089e0 in pthread_startup (entry=<optimized out>, arg=<optimized out>) at ../../nuttx/libs/libc/pthread/pthread_create.c:61
#9 0x00445baa in pthread_start () at ../../nuttx/sched/pthread/pthread_create.c:147
#10 0x00000000 in ?? ()
```
```text
#0 umm_delayfree (mem=mem@entry=0x4129fa28) at ../../nuttx/mm/umm_heap/umm_free.c:69
#1 0x00122c7e in nxsched_release_tcb (tcb=tcb@entry=0x4129fa28, ttype=1)
at ../../nuttx/sched/sched/sched_releasetcb.c:213
#2 0x001d3a70 in nxtask_exit () at ../../nuttx/sched/task/task_exit.c:128
#3 0x0013b568 in up_exit (status=status@entry=0) at ../../nuttx/arch/arm/src/common/arm_exit.c:59
#4 0x00120808 in nx_pthread_exit (exit_value=exit_value@entry=0xffffffff)
at ../../nuttx/sched/pthread/pthread_exit.c:131
#5 0x00116636 in pthread_exit (exit_value=exit_value@entry=0xffffffff)
at ../../nuttx/libs/libc/pthread/pthread_exit.c:71
#6 0x00110f94 in leave_cancellation_point () at ../../nuttx/libs/libc/sched/task_cancelpt.c:204
#7 0x001340c0 in clock_nanosleep (clockid=clockid@entry=0, flags=flags@entry=0, rqtp=rqtp@entry=0x412a0ec8,
rmtp=rmtp@entry=0x412a0ed8) at ../../nuttx/sched/signal/sig_nanosleep.c:208
#8 0x00424ef0 in sleep (seconds=seconds@entry=5) at ../../nuttx/libs/libc/unistd/lib_sleep.c:112
#9 0x0021153e in a_thread_func (arg=<error reading variable: value has been optimized out>)
at ../../apps/testing/ltp/ltp/testcases/open_posix_testsuite/conformance/interfaces/pthread_attr_init/2-1.c:46
#10 0x00408210 in pthread_startup (entry=<optimized out>, arg=<optimized out>)
at ../../nuttx/libs/libc/pthread/pthread_create.c:61
#11 0x004453da in pthread_start () at ../../nuttx/sched/pthread/pthread_create.c:147
#12 0x00000000 in ?? ()
```
Finally, the process starts to exit by calling up_exit(). The exit process still contains an operation to delete the TCB, resulting in a double free. The call chain is as follows:
```text
#0 __assert (filename=filename@entry=0x4d1504 "../../nuttx/mm/mm_heap/mm_free.c", linenum=linenum@entry=67, msg=msg@entry=0x0) at ../../nuttx/libs/libc/assert/lib_assert.c:39
#1 0x00117e8e in add_delaylist (heap=heap@entry=0x4129e000, mem=mem@entry=0x4129f470, asan_check=false) at ../../nuttx/mm/mm_heap/mm_free.c:67
#2 0x001186e4 in mm_delayfree (heap=0x4129e000, mem=mem@entry=0x4129f470) at ../../nuttx/mm/mm_heap/mm_free.c:249
#3 0x00117c1e in umm_delayfree (mem=mem@entry=0x4129f470) at ../../nuttx/mm/umm_heap/umm_free.c:70
#4 0x00122cae in nxsched_release_tcb (tcb=tcb@entry=0x4129f470, ttype=0) at ../../nuttx/sched/sched/sched_releasetcb.c:213
#5 0x001d3aa0 in nxtask_exit () at ../../nuttx/sched/task/task_exit.c:128
#6 0x0013b598 in up_exit (status=status@entry=0) at ../../nuttx/arch/arm/src/common/arm_exit.c:59
#7 0x0012ac00 in _exit (status=112, status@entry=1093268592) at ../../nuttx/sched/task/exit.c:114
#8 0x001bb0e4 in exit (status=1093268592) at ../../nuttx/libs/libc/stdlib/lib_exit.c:126
#9 0x001b9174 in nxtask_startup (entrypt=entrypt@entry=0x4129f470, argc=<optimized out>, argv=<optimized out>) at ../../nuttx/libs/libc/sched/task_startup.c:66
#10 0x00129c74 in nxtask_start () at ../../nuttx/sched/task/task_start.c:104
#11 0x00000000 in ?? ()
```
### On which OS does this issue occur?
[OS: Linux]
### What is the version of your OS?
vela
### NuttX Version
latest version
### Issue Architecture
[Arch: arm64], [Arch: arm]
### Issue Area
[Area: Other]
### Host information
_No response_
### Verification
- [x] I have verified before submitting the report.
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</pre><hr/>
<h2>Re: [I] [BUG] <title>Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "husong2 (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
husong2 commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3600409627
https://github.com/apache/nuttx/pull/11832#issuecomment-3591055544
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</pre><hr/>
<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "wangzhi16 (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
wangzhi16 commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3663210064
@anchao hi, I suspect you might not have CONFIG_SCHED_HAVE_PARENT or CONFIG_CANCELLATION_POINTS enabled.
Configuration that needs to be opened:
```
CONFIG_SCHED_HAVE_PARENT=y
CONFIG_CANCELLATION_POINTS=y
```
test on sim:
build: `tools/configure.sh sim:nsh; make -j16`
result:
<img width="1308" height="367" alt="Image" src="https://github.com/user-attachments/assets/fad6d06a-d79b-4cfd-86e4-1f9f9212f2c5" />
test on qemu-armv7a:
build: `tools/configure.sh qemu-armv7a:nsh; make -j16`
result:
<img width="1307" height="364" alt="Image" src="https://github.com/user-attachments/assets/7d73bc74-91f2-412f-a8b2-75a1b0de8e35" />
The crash mentioned above was caused by the execution flow described below.
```
thread_parent ---------------------------------thread_child
detach()
group_leave()
nxsig_cleanup()
free()---->block!
---------------------------------------------------group_leave()
---------------------------------------------------check no member in group, release thread_parent.
---------------------------------------------------exit()
release_tcb()--->double free!!!
```
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</pre><hr/>
<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "wangzhi16 (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
wangzhi16 commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3645451458
thread_parent ---------------------------------thread_child
detach()
group_leave()
nxsig_cleanup()
free()---->block!
---------------------------------------------------group_leave()
---------------------------------------------------check no member in group, release thread_parent.
---------------------------------------------------exit()
release_tcb()--->double free!!!
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<h2>Re: [I] [BUG] <title>Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3601532636
> > [@anchao](https://github.com/anchao) do you have method to fix this issue? or let [@husong2](https://github.com/husong2) revert your patch first.
>
> Have you guys run this demo on the community code? I tested it locally and it worked fine.
>
> ```
> nsh> hello
> a_thread_func entry
> a_thread_func entry 2222
> Test FAILED: Did not detach the thread, main still waiting for it to end execution.
> Test PASSED
> Test PASSED 2222
> ```
>
> Furthermore, the back reference design of the tcb group is flawless because all threads maintain a linked list reference count for tg_members, and the group's lifecycle is also maintained by this count. I suspect your issue only manifests in internal branches, right? Please check if you have changed the group logic.
also verified on qemu arm64
<img width="693" height="407" alt="Image" src="https://github.com/user-attachments/assets/6cc596c6-5a9d-4f6e-bc32-4233a603b841" />
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<h2>Re: [I] [BUG] <title>Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "xiaoxiang781216 (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
xiaoxiang781216 commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3600418657
@anchao do you have method to fix this issue? or let @husong2 revert your patch first.
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3680153314
> [@anchao](https://github.com/anchao) Why close this issue before your patch merged ?
Because the revert commit was merged, GitHub assumes the current issue is now closed and resolved:
https://github.com/apache/nuttx/pull/17564
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "GUIDINGLI (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
GUIDINGLI commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3660628117
@anchao
Please see this reproduce testcase.
If you don't have any questions about the issue, we will revert the following PR:
https://github.com/apache/nuttx/pull/11832
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "wangzhi16 (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
wangzhi16 commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3645445239
@anchao hi, here are two patches that can reproduce the problem mentioned above.
https://github.com/apache/nuttx/compare/master...wangzhi16:nuttx:master
https://github.com/apache/nuttx-apps/compare/master...wangzhi16:nuttx-apps:dev
Since this is an intermittent issue, blocking during the free process will free up the CPU. Therefore, we use `usleep` to create a scenario that is guaranteed to occur.
<img width="1273" height="316" alt="Image" src="https://github.com/user-attachments/assets/116dd175-025b-434b-a6b3-e5fe864c47c9" />
thread_parent thread_child
detach()
group_leave()
nxsig_cleanup()
free()------------>block
group_leave()
check no member in group, release thread_parent.
exit()
release_tcb()------->double free!!!
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "GUIDINGLI (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
GUIDINGLI closed issue #17418: [BUG] Premature exit of a process will cause the group to be released ahead of schedule.
URL: https://github.com/apache/nuttx/issues/17418
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3671318234
@wangzhi16 @GUIDINGLI @husong2 @xiaoxiang781216
I have a fix based on PR #17545 that I've tested locally and can resolve your current case and simplify group lifecycle management. Please check this change:
https://github.com/apache/nuttx/pull/17545
https://github.com/anchao/nuttx/commit/68ce1b83280a721fc275ac94a299007d01aa6bc2
here is test log:
```
$ ./nuttx
NuttShell (NSH) NuttX-10.4.0
nsh>
nsh>
nsh> hello
Test PASSED
nsh> hello
Test PASSED
nsh>
nsh>
nsh>
nsh>
nsh> free
total used free maxused maxfree nused nfree name
67108864 1787624 65321240 1923912 65321096 66 2 Umem
nsh> ostest
stdio_test: write fd=1
stdio_test: Standard I/O Check: printf
stdio_test: write fd=2
ostest_main: putenv(Variable1=BadValue3)
ostest_main: setenv(Variable1, GoodValue1, TRUE)
ostest_main: setenv(Variable2, BadValue1, FALSE)
ostest_main: setenv(Variable2, GoodValue2, TRUE)
ostest_main: setenv(Variable3, GoodValue3, FALSE)
ostest_main: setenv(Variable3, BadValue2, FALSE)
show_variable: Variable=Variable1 has value=GoodValue1
show_variable: Variable=Variable2 has value=GoodValue2
show_variable: Variable=Variable3 has value=GoodValue3
ostest_main: Started user_main at PID=9
user_main: Begin argument test
user_main: Started with argc=5
user_main: argv[0]="ostest"
user_main: argv[1]="Arg1"
user_main: argv[2]="Arg2"
user_main: argv[3]="Arg3"
user_main: argv[4]="Arg4"
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 1 1
mxordblk 3e289b0 3e289b0
uordblks 1d7650 1d7650
fordblks 3e289b0 3e289b0
user_main: getopt() test
getopt(): Simple test
getopt(): Invalid argument
getopt(): Missing optional argument
getopt_long(): Simple test
getopt_long(): No short options
getopt_long(): Argument for --option=argument
getopt_long(): Invalid long option
getopt_long(): Mixed long and short options
getopt_long(): Invalid short option
getopt_long(): Missing optional arguments
getopt_long_only(): Mixed long and short options
getopt_long_only(): Single hyphen long options
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 1 1
mxordblk 3e289b0 3e289b0
uordblks 1d7650 1d7650
fordblks 3e289b0 3e289b0
user_main: libc tests
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 1 1
mxordblk 3e289b0 3e289b0
uordblks 1d7650 1d7650
fordblks 3e289b0 3e289b0
show_variable: Variable=Variable1 has value=GoodValue1
show_variable: Variable=Variable2 has value=GoodValue2
show_variable: Variable=Variable3 has value=GoodValue3
show_variable: Variable=Variable1 has no value
show_variable: Variable=Variable2 has value=GoodValue2
show_variable: Variable=Variable3 has value=GoodValue3
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 1 2
mxordblk 3e289b0 3e289b0
uordblks 1d7650 1d7630
fordblks 3e289b0 3e289d0
show_variable: Variable=Variable1 has no value
show_variable: Variable=Variable2 has no value
show_variable: Variable=Variable3 has no value
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 2 2
mxordblk 3e289b0 3e289b0
uordblks 1d7630 1d7558
fordblks 3e289d0 3e28aa8
user_main: setvbuf test
setvbuf_test: Test NO buffering
setvbuf_test: Using NO buffering
setvbuf_test: Test default FULL buffering
setvbuf_test: Using default FULL buffering
setvbuf_test: Test FULL buffering, buffer size 64
setvbuf_test: Using FULL buffering, buffer size 64
setvbuf_test: Test FULL buffering, pre-allocated buffer
setvbuf_test: Using FULL buffering, pre-allocated buffer
setvbuf_test: Test LINE buffering, buffer size 64
setvbuf_test: Using LINE buffering, buffer size 64
setvbuf_test: Test FULL buffering, pre-allocated buffer
setvbuf_test: Using FULL buffering, pre-allocated buffer
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 2 2
mxordblk 3e289b0 3e289b0
uordblks 1d7558 1d7558
fordblks 3e28aa8 3e28aa8
user_main: /dev/null test
dev_null: Read 0 bytes from /dev/null
dev_null: Wrote 1024 bytes to /dev/null
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 2 2
mxordblk 3e289b0 3e289b0
uordblks 1d7558 1d7558
fordblks 3e28aa8 3e28aa8
user_main: task_restart test
Test task_restart()
restart_main: setenv(VarName, VarValue, TRUE)
restart_main: Started restart_main at PID=10
restart_main: Started with argc=4
restart_main: argv[0]="ostest"
restart_main: argv[1]="This is argument 1"
restart_main: argv[2]="Argument 2 here"
restart_main: argv[3]="Lastly, the 3rd argument"
restart_main: Variable=VarName has value=VarValue
restart_main: I am still here
restart_main: I am still here
restart_main: Started restart_main at PID=10
restart_main: Started with argc=4
restart_main: argv[0]="ostest"
restart_main: argv[1]="This is argument 1"
restart_main: argv[2]="Argument 2 here"
restart_main: argv[3]="Lastly, the 3rd argument"
restart_main: Variable=VarName has value=VarValue
restart_main: Started with argc=4
restart_main: argv[0]="ostest"
restart_main: argv[1]="This is argument 1"
restart_main: argv[2]="Argument 2 here"
restart_main: argv[3]="Lastly, the 3rd argument"
restart_main: Variable=VarName has value=VarValue
restart_main: Exiting
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 2 3
mxordblk 3e289b0 3e163c0
uordblks 1d7558 1e95b8
fordblks 3e28aa8 3e16a48
user_main: waitpid test
Test waitpid()
waitpid_start_child: Started waitpid_main at PID=11
waitpid_start_child: Started waitpid_main at PID=12
waitpid_start_child: Started waitpid_main at PID=13
waitpid_test: Waiting for PID=11 with waitpid()
waitpid_main: PID 11 Started
waitpid_main: PID 12 Started
waitpid_main: PID 13 Started
waitpid_main: PID 11 exitting with result=14
waitpid_main: PID 12 exitting with result=14
waitpid_main: PID 13 exitting with result=14
waitpid_test: PID 11 waitpid succeeded with stat_loc=0e00
waitpid_last: Waiting for PID=13 with waitpid()
waitpid_last: PASS: PID 13 waitpid failed with ECHILD. That may be
acceptable because child status is disabled on this thread.
Test waitid(P_PID)
waitpid_start_child: Started waitpid_main at PID=14
waitpid_start_child: Started waitpid_main at PID=15
waitpid_start_child: Started waitpid_main at PID=20
waitpid_test: Waiting for PID=14 with waitid()
waitpid_main: PID 14 Started
waitpid_main: PID 15 Started
waitpid_main: PID 20 Started
waitpid_main: PID 14 exitting with result=14
waitpid_main: PID 15 exitting with result=14
waitpid_main: PID 20 exitting with result=14
waitpid_test: waitid PID 14 succeeded with si_status=14
waitpid_last: Waiting for PID=20 with waitpid()
waitpid_last: PASS: PID 20 waitpid failed with ECHILD. That may be
acceptable because child status is disabled on this thread.
Test waitid(P_ALL)
waitpid_start_child: Started waitpid_main at PID=21
waitpid_start_child: Started waitpid_main at PID=22
waitpid_start_child: Started waitpid_main at PID=23
waitpid_test: Waiting for any child with waitid()
waitpid_main: PID 21 Started
waitpid_main: PID 22 Started
waitpid_main: PID 23 Started
waitpid_main: PID 21 exitting with result=14
waitpid_main: PID 22 exitting with result=14
waitpid_main: PID 23 exitting with result=14
waitpid_test: PID 21 waitid succeeded with si_status=14
waitpid_last: Waiting for PID=23 with waitpid()
waitpid_last: PASS: PID 23 waitpid failed with ECHILD. That may be
acceptable because child status is disabled on this thread.
Test wait()
waitpid_start_child: Started waitpid_main at PID=26
waitpid_start_child: Started waitpid_main at PID=27
waitpid_start_child: Started waitpid_main at PID=28
waitpid_test: Waiting for any child with wait()
waitpid_main: PID 26 Started
waitpid_main: PID 27 Started
waitpid_main: PID 28 Started
waitpid_main: PID 26 exitting with result=14
waitpid_main: PID 27 exitting with result=14
waitpid_main: PID 28 exitting with result=14
waitpid_test: PID 26 wait succeeded with stat_loc=0e00
waitpid_last: Waiting for PID=28 with waitpid()
waitpid_last: PASS: PID 28 waitpid failed with ECHILD. That may be
acceptable because child status is disabled on this thread.
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 5
mxordblk 3e163c0 3df1768
uordblks 1e95b8 20d5c8
fordblks 3e16a48 3df2a38
user_main: mutex test
Initializing mutex
Starting thread 1
Starting thread 2
Thread1 Thread2
Loops 32 32
Errors 0 0
Testing moved mutex
Starting moved mutex thread 1
Starting moved mutex thread 2
Thread1 Thread2
Moved Loops 32 32
Moved Errors 0 0
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 5 2
mxordblk 3df1768 3de62f0
uordblks 20d5c8 219c70
fordblks 3df2a38 3de6390
user_main: timed mutex test
mutex_test: Initializing mutex
mutex_test: Starting thread
pthread: Started
pthread: Waiting for lock or timeout
mutex_test: Unlocking
pthread: Got the lock
pthread: Waiting for lock or timeout
pthread: Got the timeout. Terminating
mutex_test: PASSED
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 2 2
mxordblk 3de62f0 3e18000
uordblks 219c70 1e7f60
fordblks 3de6390 3e180a0
user_main: cancel test
cancel_test: Test 1a: Normal Cancellation
cancel_test: Starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
start_thread: Yielding
sem_waiter: Taking mutex
sem_waiter: Starting wait for condition
cancel_test: Canceling thread
cancel_test: Joining
cancel_test: waiter exited with result=0xffffffffffffffff
cancel_test: PASS thread terminated with PTHREAD_CANCELED
cancel_test: Test 2: Asynchronous Cancellation
cancel_test: Starting thread
restart_thread: Destroying cond
restart_thread: Destroying mutex
restart_thread: Re-starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
start_thread: Yielding
asynch_waiter: Setting non-cancelable
asynch_waiter: Setting synchronous cancellation type
cancel_test: Canceling thread
cancel_test: Joining
asynch_waiter: Restoring cancelable state
asynch_waiter: Setting cancelable
cancel_test: waiter exited with result=0xffffffffffffffff
cancel_test: PASS thread terminated with PTHREAD_CANCELED
cancel_test: Test 3: Cancellation of detached thread
cancel_test: Re-starting thread
restart_thread: Destroying cond
restart_thread: Destroying mutex
restart_thread: Re-starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
start_thread: Yielding
sem_waiter: Taking mutex
sem_waiter: Starting wait for condition
cancel_test: Canceling thread
cancel_test: Joining
cancel_test: PASS pthread_join failed with status=ESRCH
cancel_test: Test 5: Non-cancelable threads
cancel_test: Re-starting thread (non-cancelable)
restart_thread: Destroying cond
restart_thread: Destroying mutex
restart_thread: Re-starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
start_thread: Yielding
sem_waiter: Taking mutex
sem_waiter: Starting wait for condition
sem_waiter: Setting non-cancelable
cancel_test: Canceling thread
cancel_test: Joining
sem_waiter: Releasing mutex
sem_waiter: Setting cancelable
cancel_test: waiter exited with result=0xffffffffffffffff
cancel_test: PASS thread terminated with PTHREAD_CANCELED
cancel_test: Test 6: Cancel message queue wait
cancel_test: Starting thread (cancelable)
restart_thread: Destroying cond
restart_thread: Destroying mutex
restart_thread: Re-starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
start_thread: Yielding
mqueue_waiter: Waiting to receive a message...
cancel_test: Canceling thread
cancel_test: Joining
cancel_test: waiter exited with result=0xffffffffffffffff
cancel_test: PASS thread terminated with PTHREAD_CANCELED
cancel_test: Test 7: Cancel signal wait
cancel_test: Starting thread (cancelable)
restart_thread: Destroying cond
restart_thread: Destroying mutex
restart_thread: Re-starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
start_thread: Yielding
sig_waiter: Waiting to receive signal...
cancel_test: Canceling thread
cancel_test: Joining
cancel_test: waiter exited with result=0xffffffffffffffff
cancel_test: PASS thread terminated with PTHREAD_CANCELED
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 2 3
mxordblk 3e18000 3e043c0
uordblks 1e7f60 1fbbc8
fordblks 3e180a0 3e04438
user_main: robust test
robust_test: Initializing mutex
robust_test: Starting thread
robust_waiter: Taking mutex
robust_waiter: Exiting with mutex
robust_test: Take the lock again
robust_test: Make the mutex consistent again.
robust_test: Take the lock again
robust_test: Joining
robust_test: waiter exited with result=0
robust_test: Test complete with nerrors=0
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 3
mxordblk 3e043c0 3e16570
uordblks 1fbbc8 1e9a18
fordblks 3e04438 3e165e8
user_main: semaphore test
sem_test: Initializing semaphore to 0
sem_test: Starting waiter thread 1
sem_test: Set thread 1 priority to 191
waiter_func: Thread 1 Started
waiter_func: Thread 1 initial semaphore value = 0
waiter_func: Thread 1 waiting on semaphore
sem_test: Starting waiter thread 2
sem_test: Set thread 2 priority to 128
waiter_func: Thread 2 Started
waiter_func: Thread 2 initial semaphore value = -1
waiter_func: Thread 2 waiting on semaphore
sem_test: Starting poster thread 3
sem_test: Set thread 3 priority to 64
poster_func: Thread 3 started
poster_func: Thread 3 semaphore value = -2
poster_func: Thread 3 posting semaphore
waiter_func: Thread 1 awakened
waiter_func: Thread 1 new semaphore value = -1
waiter_func: Thread 1 done
poster_func: Thread 3 new semaphore value = -1
poster_func: Thread 3 semaphore value = -1
poster_func: Thread 3 posting semaphore
waiter_func: Thread 2 awakened
waiter_func: Thread 2 new semaphore value = 0
waiter_func: Thread 2 done
poster_func: Thread 3 new semaphore value = 0
poster_func: Thread 3 done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 4
mxordblk 3e16570 3df5560
uordblks 1e9a18 209578
fordblks 3e165e8 3df6a88
user_main: timed semaphore test
semtimed_test: Initializing semaphore to 0
semtimed_test: Waiting for two second timeout
semtimed_test: PASS: first test returned timeout
BEFORE: (1212278453 sec, 390682501 nsec)
AFTER: (1212278455 sec, 400147663 nsec)
semtimed_test: Starting poster thread
semtimed_test: Set thread 1 priority to 191
semtimed_test: Starting poster thread 3
semtimed_test: Set thread 3 priority to 64
semtimed_test: Waiting for two second timeout
poster_func: Waiting for 1 second
poster_func: Posting
semtimed_test: PASS: sem_timedwait succeeded
BEFORE: (1212278455 sec, 400631500 nsec)
AFTER: (1212278456 sec, 410215789 nsec)
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 4 4
mxordblk 3df5560 3e16570
uordblks 209578 1e8218
fordblks 3df6a88 3e17de8
user_main: condition variable test
cond_test: Initializing mutex
cond_test: Initializing cond
cond_test: Starting waiter
cond_test: Set thread 1 priority to 128
waiter_thread: Started
cond_test: Starting signaler
cond_test: Set thread 2 priority to 64
thread_signaler: Started
thread_signaler: Terminating
cond_test: signaler terminated, now cancel the waiter
cond_test: Waiter Signaler
cond_test: Loops 32 32
cond_test: Errors 0 0
cond_test:
cond_test: 0 times, waiter did not have to wait for data
cond_test: 0 times, data was already available when the signaler run
cond_test: 0 times, the waiter was in an unexpected state when the signaler ran
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 4 4
mxordblk 3e16570 3e05d68
uordblks 1e8218 1f8bc8
fordblks 3e17de8 3e07438
user_main: pthread_exit() test
pthread_exit_test: Started pthread_exit_main at PID=59
pthread_exit_main 59: Starting pthread_exit_thread
pthread_exit_main 59: Sleeping for 5 seconds
pthread_exit_thread 60: Sleeping for 10 second
pthread_exit_main 59: Calling pthread_exit()
pthread_exit_thread 60: Still running...
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 4 3
mxordblk 3e05d68 3e05bc0
uordblks 1f8bc8 1fa3c8
fordblks 3e07438 3e05c38
user_main: pthread_rwlock test
pthread_rwlock: Initializing rwlock
pthread_exit_thread 60: Exiting
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 3
mxordblk 3e05bc0 3e05bc0
uordblks 1fa3c8 1e8240
fordblks 3e05c38 3e17dc0
user_main: pthread_rwlock_cancel test
pthread_rwlock_cancel: Starting test
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 3
mxordblk 3e05bc0 3e05d68
uordblks 1e8240 1f8bf0
fordblks 3e17dc0 3e07410
user_main: timed wait test
thread_waiter: Initializing mutex
timedwait_test: Initializing cond
timedwait_test: Starting waiter
timedwait_test: Set thread 2 priority to 177
thread_waiter: Taking mutex
thread_waiter: Starting 5 second wait for condition
timedwait_test: Joining
thread_waiter: pthread_cond_timedwait timed out
thread_waiter: Releasing mutex
thread_waiter: Exit with status 0x12345678
timedwait_test: waiter exited with result=0x12345678
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 3
mxordblk 3e05d68 3e16570
uordblks 1f8bf0 1e8240
fordblks 3e07410 3e17dc0
user_main: message queue test
mqueue_test: Starting receiver
mqueue_test: Set receiver priority to 128
receiver_thread: Starting
mqueue_test: Starting sender
mqueue_test: Set sender thread priority to 64
mqueue_test: Waiting for sender to complete
sender_thread: Starting
receiver_thread: mq_receive succeeded on msg 0
sender_thread: mq_send succeeded on msg 0
receiver_thread: mq_receive succeeded on msg 1
sender_thread: mq_send succeeded on msg 1
receiver_thread: mq_receive succeeded on msg 2
sender_thread: mq_send succeeded on msg 2
receiver_thread: mq_receive succeeded on msg 3
sender_thread: mq_send succeeded on msg 3
receiver_thread: mq_receive succeeded on msg 4
sender_thread: mq_send succeeded on msg 4
receiver_thread: mq_receive succeeded on msg 5
sender_thread: mq_send succeeded on msg 5
receiver_thread: mq_receive succeeded on msg 6
sender_thread: mq_send succeeded on msg 6
receiver_thread: mq_receive succeeded on msg 7
sender_thread: mq_send succeeded on msg 7
receiver_thread: mq_receive succeeded on msg 8
sender_thread: mq_send succeeded on msg 8
receiver_thread: mq_receive succeeded on msg 9
sender_thread: mq_send succeeded on msg 9
sender_thread: returning nerrors=0
mqueue_test: Killing receiver
receiver_thread: mq_receive interrupted!
receiver_thread: returning nerrors=0
mqueue_test: Canceling receiver
mqueue_test: receiver has already terminated
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 3
mxordblk 3e16570 3e04260
uordblks 1e8240 1fbbf0
fordblks 3e17dc0 3e04410
user_main: timed message queue test
timedmqueue_test: Starting sender
timedmqueue_test: Waiting for sender to complete
sender_thread: Starting
sender_thread: mq_timedsend succeeded on msg 0
sender_thread: mq_timedsend succeeded on msg 1
sender_thread: mq_timedsend succeeded on msg 2
sender_thread: mq_timedsend succeeded on msg 3
sender_thread: mq_timedsend succeeded on msg 4
sender_thread: mq_timedsend succeeded on msg 5
sender_thread: mq_timedsend succeeded on msg 6
sender_thread: mq_timedsend succeeded on msg 7
sender_thread: mq_timedsend succeeded on msg 8
sender_thread: mq_timedsend 9 timed out as expected
sender_thread: returning nerrors=0
timedmqueue_test: Starting receiver
timedmqueue_test: Waiting for receiver to complete
receiver_thread: Starting
receiver_thread: mq_timedreceive succeed on msg 0
receiver_thread: mq_timedreceive succeed on msg 1
receiver_thread: mq_timedreceive succeed on msg 2
receiver_thread: mq_timedreceive succeed on msg 3
receiver_thread: mq_timedreceive succeed on msg 4
receiver_thread: mq_timedreceive succeed on msg 5
receiver_thread: mq_timedreceive succeed on msg 6
receiver_thread: mq_timedreceive succeed on msg 7
receiver_thread: mq_timedreceive succeed on msg 8
receiver_thread: Receive 9 timed out as expected
receiver_thread: returning nerrors=0
timedmqueue_test: Test complete
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 3
mxordblk 3e04260 3e04220
uordblks 1fbbf0 1fbbf0
fordblks 3e04410 3e04410
user_main: sigprocmask test
sigprocmask_test: SUCCESS
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 3
mxordblk 3e04220 3e04220
uordblks 1fbbf0 1fbbf0
fordblks 3e04410 3e04410
user_main: signal handler test
sighand_test: Initializing semaphore to 0
sighand_test: Unmasking SIGCHLD
sighand_test: Registering SIGCHLD handler
sighand_test: Starting waiter task
sighand_test: Started waiter_main pid=78
waiter_main: Waiter started
waiter_main: Unmasking signal 32
waiter_main: Registering signal handler
waiter_main: oact.sigaction=0 oact.sa_flags=0 oact.sa_mask=0000000000000000
waiter_main: Waiting on semaphore
sighand_test: Signaling pid=78 with signo=32 sigvalue=42
waiter_main: sem_wait() successfully interrupted by signal
waiter_main: done
sighand_test: done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 3 2
mxordblk 3e04220 3e16570
uordblks 1fbbf0 1e9a60
fordblks 3e04410 3e165a0
user_main: nested signal handler test
signest_test: Starting signal waiter task at priority 101
waiter_main: Waiter started
waiter_main: Setting signal mask
waiter_main: Registering signal handler
waiter_main: Waiting on semaphore
signest_test: Started waiter_main pid=79
signest_test: Starting interfering task at priority 102
interfere_main: Waiting on semaphore
signest_test: Started interfere_main pid=84
signest_test: Simple case:
Total signalled 1240 Odd=620 Even=620
Total handled 1240 Odd=620 Even=620
Total nested 0 Odd=0 Even=0
signest_test: With task locking
Total signalled 2480 Odd=1240 Even=1240
Total handled 2480 Odd=1240 Even=1240
Total nested 0 Odd=0 Even=0
signest_test: With intefering thread
Total signalled 3720 Odd=1860 Even=1860
Total handled 3720 Odd=1860 Even=1860
Total nested 0 Odd=0 Even=0
signest_test: done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 2 4
mxordblk 3e16570 3e036b8
uordblks 1e9a60 1fbcd0
fordblks 3e165a0 3e04330
user_main: wdog test
wdog_test start...
wdtest_once 0 ns
wdtest_once 0 ns
wdtest_once 0 ns
wdtest_once 0 ns
wdtest_once 1 ns
wdtest_once 1 ns
wdtest_once 1 ns
wdtest_once 1 ns
wdtest_once 10 ns
wdtest_once 10 ns
wdtest_once 10 ns
wdtest_once 10 ns
wdtest_once 100 ns
wdtest_once 100 ns
wdtest_once 100 ns
wdtest_once 100 ns
wdtest_once 1000 ns
wdtest_once 1000 ns
wdtest_once 1000 ns
wdtest_once 1000 ns
wdtest_once 10000 ns
wdtest_once 10000 ns
wdtest_once 10000 ns
wdtest_once 10000 ns
wdtest_once 100000 ns
wdtest_once 100000 ns
wdtest_once 100000 ns
wdtest_once 100000 ns
wdtest_once 1000000 ns
wdtest_once 1000000 ns
wdtest_once 1000000 ns
wdtest_once 1000000 ns
wd_start with maximum delay, cancel OK, rest 1073741821
wdtest_recursive 1000000ns
wd_start with maximum delay, cancel OK, rest 1073741821
wdtest_recursive 1000000ns
wd_start with maximum delay, cancel OK, rest 1073741821
wdtest_recursive 1000000ns
wd_start with maximum delay, cancel OK, rest 1073741821
wdtest_recursive 1000000ns
recursive wdog triggered 6 times, elapsed tick 12
wdtest_recursive 10000000ns
recursive wdog triggered 6 times, elapsed tick 12
wdtest_recursive 10000000ns
recursive wdog triggered 6 times, elapsed tick 12
wdtest_recursive 10000000ns
recursive wdog triggered 6 times, elapsed tick 12
wdtest_recursive 10000000ns
recursive wdog triggered 6 times, elapsed tick 12
recursive wdog triggered 6 times, elapsed tick 12
recursive wdog triggered 6 times, elapsed tick 12
recursive wdog triggered 6 times, elapsed tick 12
wdog_test end...
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 4 6
mxordblk 3e036b8 3de26a8
uordblks 1fbcd0 209680
fordblks 3e04330 3df6980
user_main: POSIX timer test
timer_test: Initializing semaphore to 0
timer_test: Unmasking signal 32
timer_test: Registering signal handler
timer_test: oact.sigaction=0 oact.sa_flags=0 oact.sa_mask=0000000000000000
timer_test: Creating timer
timer_test: Starting timer
timer_test: Waiting on semaphore
timer_expiration: Received signal 32
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=1
timer_test: Waiting on semaphore
timer_expiration: Received signal 32
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=2
timer_test: Waiting on semaphore
timer_expiration: Received signal 32
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=3
timer_test: Waiting on semaphore
timer_expiration: Received signal 32
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=4
timer_test: Waiting on semaphore
timer_expiration: Received signal 32
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=5
timer_test: Deleting timer
timer_test: done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 6 6
mxordblk 3de26a8 3de26a8
uordblks 209680 209680
fordblks 3df6980 3df6980
user_main: barrier test
barrier_test: Initializing barrier
barrier_test: Thread 0 created
barrier_test: Thread 1 created
barrier_test: Thread 2 created
barrier_test: Thread 3 created
barrier_test: Thread 4 created
barrier_test: Thread 5 created
barrier_test: Thread 6 created
barrier_test: Thread 7 created
barrier_func: Thread 0 started
barrier_func: Thread 1 started
barrier_func: Thread 2 started
barrier_func: Thread 3 started
barrier_func: Thread 4 started
barrier_func: Thread 5 started
barrier_func: Thread 6 started
barrier_func: Thread 7 started
barrier_func: Thread 0 calling pthread_barrier_wait()
barrier_func: Thread 1 calling pthread_barrier_wait()
barrier_func: Thread 2 calling pthread_barrier_wait()
barrier_func: Thread 3 calling pthread_barrier_wait()
barrier_func: Thread 4 calling pthread_barrier_wait()
barrier_func: Thread 5 calling pthread_barrier_wait()
barrier_func: Thread 6 calling pthread_barrier_wait()
barrier_func: Thread 7 calling pthread_barrier_wait()
barrier_func: Thread 7, back with status=PTHREAD_BARRIER_SERIAL_THREAD (I AM SPECIAL)
barrier_func: Thread 0, back with status=0 (I am not special)
barrier_func: Thread 1, back with status=0 (I am not special)
barrier_func: Thread 2, back with status=0 (I am not special)
barrier_func: Thread 3, back with status=0 (I am not special)
barrier_func: Thread 4, back with status=0 (I am not special)
barrier_func: Thread 5, back with status=0 (I am not special)
barrier_func: Thread 6, back with status=0 (I am not special)
barrier_func: Thread 7 done
barrier_func: Thread 0 done
barrier_func: Thread 1 done
barrier_func: Thread 2 done
barrier_func: Thread 3 done
barrier_func: Thread 4 done
barrier_func: Thread 5 done
barrier_func: Thread 6 done
barrier_test: Thread 0 completed with result=0
barrier_test: Thread 1 completed with result=0
barrier_test: Thread 2 completed with result=0
barrier_test: Thread 3 completed with result=0
barrier_test: Thread 4 completed with result=0
barrier_test: Thread 5 completed with result=0
barrier_test: Thread 6 completed with result=0
barrier_test: Thread 7 completed with result=0
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 6 5
mxordblk 3de26a8 3da0688
uordblks 209680 25c6f0
fordblks 3df6980 3da3910
user_main: setjmp test
setjmp_test: Initializing jmp_buf
setjmp_test: Try jump
setjmp_test: About to jump, longjmp with ret val: 123
setjmp_test: Jump succeed
setjmp_test: Try jump
setjmp_test: About to jump, longjmp with ret val: 0
setjmp_test: Jump succeed
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 5 5
mxordblk 3da0688 3da0688
uordblks 25c6f0 25c6f0
fordblks 3da3910 3da3910
user_main: scheduler lock test
sched_lock: Starting lowpri_thread at 97
sched_lock: Set lowpri_thread priority to 97
sched_lock: Starting highpri_thread at 98
sched_lock: Set highpri_thread priority to 98
sched_lock: Waiting...
sched_lock: PASSED No pre-emption occurred while scheduler was locked.
sched_lock: Starting lowpri_thread at 97
sched_lock: Set lowpri_thread priority to 97
sched_lock: Starting highpri_thread at 98
sched_lock: Set highpri_thread priority to 98
sched_lock: Waiting...
sched_lock: PASSED No pre-emption occurred while scheduler was locked.
sched_lock: Finished
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 5 5
mxordblk 3da0688 3e036b8
uordblks 25c6f0 1f8cd0
fordblks 3da3910 3e07330
user_main: nxevent test
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 5 6
mxordblk 3e036b8 3df2eb0
uordblks 1f8cd0 1f8cd0
fordblks 3e07330 3e07330
Final memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 4000000 4000000
ordblks 1 6
mxordblk 3e289b0 3df2eb0
uordblks 1d7650 1f8cd0
fordblks 3e289b0 3e07330
user_main: Exiting
ostest_main: Exiting with status 0
stdio_test: Standard I/O Check: fprintf to stderr
nsh> free
total used free maxused maxfree nused nfree name
67108864 1788280 65320584 2476672 65103216 70 3 Umem
nsh> poweroff
archer@archer:~/code/nuttx/n8/nuttx$ git diff
diff --git a/boards/sim/sim/sim/configs/nsh/defconfig b/boards/sim/sim/sim/configs/nsh/defconfig
index 8517209444..77350c394d 100644
--- a/boards/sim/sim/sim/configs/nsh/defconfig
+++ b/boards/sim/sim/sim/configs/nsh/defconfig
@@ -16,6 +16,7 @@ CONFIG_BOARDCTL_POWEROFF=y
CONFIG_BOARD_LOOPSPERMSEC=0
CONFIG_BOOT_RUNFROMEXTSRAM=y
CONFIG_BUILTIN=y
+CONFIG_CANCELLATION_POINTS=y
CONFIG_COVERAGE_ALL=y
CONFIG_COVERAGE_TOOLCHAIN=y
CONFIG_DEBUG_ASSERTIONS=y
```
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</pre><hr/>
<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "wangzhi16 (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
wangzhi16 commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3673353842
@anchao Hi, there is memory leak. The tcb of thread_parent is not released.
<img width="891" height="193" alt="Image" src="https://github.com/user-attachments/assets/8250e1f7-9510-405a-92d3-3d55a4d5fa3b" />
<img width="1549" height="330" alt="Image" src="https://github.com/user-attachments/assets/d46de821-87e9-41d9-9cba-7a7f2126ef29" />
please check again, thanks.
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<h2>Re: [I] [BUG] <title>Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3601506608
> [@anchao](https://github.com/anchao) do you have method to fix this issue? or let [@husong2](https://github.com/husong2) revert your patch first.
Have you guys run this demo on the community code? I tested it locally and it worked fine.
```
nsh> hello
a_thread_func entry
a_thread_func entry 2222
Test FAILED: Did not detach the thread, main still waiting for it to end execution.
Test PASSED
Test PASSED 2222
```
Furthermore, the back reference design of the tcb group is flawless because all threads maintain a linked list reference count for tg_members, and the group's lifecycle is also maintained by this count. I suspect your issue only manifests in internal branches, right? Please check if you have changed the group logic.
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<h2>Re: [I] [BUG] <title>Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3601573080
Another point of suspicion is whether you reproduced the issue in SMP mode? If it's an internal branch, it might be related to @hujun260 previous changes from critical sections to spinlocks.
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3670591165
@wangzhi16 Thanks. I can reproduce this issue, and I will fix it today.
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "acassis (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
acassis closed issue #17418: [BUG] Premature exit of a process will cause the group to be released ahead of schedule.
URL: https://github.com/apache/nuttx/issues/17418
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "GUIDINGLI (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
GUIDINGLI commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3680136353
@anchao
Why close this issue before your patch merged ?
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3661099752
> [@anchao](https://github.com/anchao) Please see this reproduce testcase. If you don't have any questions about the issue, we will revert the following PR: [#11832](https://github.com/apache/nuttx/pull/11832)
@GUIDINGLI Hi again, work fine after apply :
https://github.com/apache/nuttx/compare/master...wangzhi16:nuttx:master
https://github.com/apache/nuttx-apps/compare/master...wangzhi16:nuttx-apps:dev
```
archer@archerc:~/code/nuttx/n4/nuttx$ ./nuttx
NuttShell (NSH) NuttX-10.4.0
nsh> hello
Test PASSED
nsh>
```
could we reproduce this issue on upstream?
patch diff:
```
archer@archerc:~/code/nuttx/n4/apps$ git diff .
diff --git a/examples/hello/hello_main.c b/examples/hello/hello_main.c
index fd194a623..1f368861e 100644
--- a/examples/hello/hello_main.c
+++ b/examples/hello/hello_main.c
@@ -26,6 +26,36 @@
#include <nuttx/config.h>
#include <stdio.h>
+#include <sys/wait.h>
+
+#define TIMEOUT 5 /* Timeout value of 5 seconds. */
+#define INTHREAD 0 /* Control going to or is already for Thread */
+#define INMAIN 1 /* Control going to or is already for Main */
+
+#define PTS_PASS 0
+#define PTS_FAIL 1
+#define PTS_UNRESOLVED 2
+#define PTS_UNSUPPORTED 4
+#define PTS_UNTESTED 5
+
+static int sem1; /* Manual semaphore */
+
+static void *a_thread_func(void *arg)
+{
+
+ /* Indicate to main() that the thread was created. */
+ sem1 = INTHREAD;
+
+ /* Wait for main to detach change the attribute object and try and detach this thread.
+ * Wait for a timeout value of 10 seconds before timing out if the thread was not able
+ * to be detached. */
+ sleep(TIMEOUT);
+
+ printf
+ ("Test FAILED: Did not detach the thread, main still waiting for it to end execution.\n");
+ pthread_exit((void *)PTS_FAIL);
+ return NULL;
+}
/****************************************************************************
* Public Functions
@@ -37,6 +67,44 @@
int main(int argc, FAR char *argv[])
{
- printf("Hello, World!!\n");
- return 0;
+ pthread_t new_th;
+ pthread_attr_t new_attr;
+ int ret_val;
+
+ /* Initializing */
+ sem1 = INMAIN;
+ if (pthread_attr_init(&new_attr) != 0) {
+ perror("Cannot initialize attribute object\n");
+ return PTS_UNRESOLVED;
+ }
+
+ /* Create a new thread passing it the new attribute object */
+ if (pthread_create(&new_th, &new_attr, a_thread_func, NULL) != 0) {
+ perror("Error creating thread\n");
+ return PTS_UNRESOLVED;
+ }
+
+ /* Wait for thread to indicate that the start routine for the thread has started. */
+ while (sem1 == INMAIN)
+ sleep(1);
+
+ /* If pthread_detach fails, that means that the test fails as well. */
+ ret_val = pthread_detach(new_th);
+
+ if (ret_val != 0) {
+ /* Thread is already detached. */
+ if (ret_val == EINVAL) {
+ printf("Test FAILED\n");
+ return PTS_FAIL;
+ }
+ /* pthread_detach() failed for another reason. */
+ else {
+ printf("Error in pthread_detach(), error: %d\n",
+ ret_val);
+ return PTS_UNRESOLVED;
+ }
+ }
+
+ printf("Test PASSED\n");
+ return PTS_PASS;
}
```
```
archer@archerc:~/code/nuttx/n4/nuttx$ git diff .
diff --git a/sched/signal/sig_cleanup.c b/sched/signal/sig_cleanup.c
index 9bb8d9a733..3eef7bb94c 100644
--- a/sched/signal/sig_cleanup.c
+++ b/sched/signal/sig_cleanup.c
@@ -61,6 +61,10 @@ void nxsig_cleanup(FAR struct tcb_s *stcb)
nxsig_release_pendingsigaction(sigq);
}
+ /* Using sleep to simulate the blocking that free might encounter. */
+
+ usleep(1);
+
/* Misc. signal-related clean-up */
sigfillset(&stcb->sigprocmask);
```
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<h2>Re: [I] [BUG] <title>Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3601603371
arm64 smp:
<img width="1110" height="559" alt="Image" src="https://github.com/user-attachments/assets/e955195d-c517-4a83-b3bb-b3044ef26336" />
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3606587254
> The test case contains main thread and a detached thread, here is the sequence which trigger used after free:
>
> 1. main thread enter exit process
> 2. main thread remove self from task group
> 3. main thread cancel test thread
> 4. test thread remove self from task group
> 5. task group is freed affer step 4 since all threads in the group exit
> 6. main thread run again and crash immediately since it's tcb(group) is freed at step 4
>
> This problem isn't related to SMP directly.
enable CONFIG_CANCELLATION_POINTS and works fine again:
<img width="741" height="307" alt="Image" src="https://github.com/user-attachments/assets/0db76655-6472-48b0-b668-96600c86ee80" />
@husong2
I couldn't find this configuration in the community code:
/nuttx/boards/arm/qemu/qemu-armv8r-aarch32/configs/smp/defconfig
I reiterate, please reproduce the issue using the community code, not Xiaomi's internal branches.
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<h2>Re: [I] [BUG] Premature exit of a process will cause the group to be released ahead of schedule. [nuttx]</h2>
<b>Posted by "anchao (via GitHub)" <gi...@apache.org>.</b><hr/><pre>
anchao commented on issue #17418:
URL: https://github.com/apache/nuttx/issues/17418#issuecomment-3606619459
> The test case contains main thread and a detached thread, here is the sequence which trigger used after free:
>
> 1. main thread enter exit process
> 2. main thread remove self from task group
> 3. main thread cancel test thread
> 4. test thread remove self from task group
> 5. task group is freed affer step 4 since all threads in the group exit
> 6. main thread run again and crash immediately since it's tcb(group) is freed at step 4
>
> This problem isn't related to SMP directly.
This process won't be triggered because the group is bound to the main thread, and its lifecycle is controlled by `tg_members`. You need to further examine the implementation details of `nxsched_release_tcb()` and `group_leave()`. The group is not immediately released when the main process exits:
<img width="1962" height="393" alt="Image" src="https://github.com/user-attachments/assets/eb0c6982-aa20-4932-8c16-d364f59e90db" />
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