----- Original Message -----
> From: "Jan Stancek" <[email protected]>
> To: "zenglg.jy" <[email protected]>
> Cc: "ltp-list" <[email protected]>
> Sent: Monday, 9 December, 2013 5:15:32 PM
> Subject: Re: [LTP] [PATCH v3 2/2] clone/clone08.c: Add new flags
>
>
>
> I was running v3 with only "CLONE_THREAD" testcase enabled:
> - {"CLONE_PARENT", CLONE_PARENT | CLONE_VM | SIGCHLD, NULL,
> - child_clone_parent},
> - {"CLONE_CHILD_SETTID", CLONE_CHILD_SETTID | CLONE_VM | SIGCHLD, NULL,
> - child_clone_child_settid},
> - {"CLONE_PARENT_SETTID", CLONE_PARENT_SETTID | CLONE_VM | SIGCHLD,
> NULL,
> - child_clone_parent_settid},
> -#ifdef CLONE_STOPPED
> - {"CLONE_STOPPED", CLONE_STOPPED | CLONE_VM | SIGCHLD,
> - test_clone_stopped, child_clone_stopped},
> -#endif
>
> and I see it failing/crashing sometimes. I usually see one of these failures:
>
> 1. clone08 4 TBROK : Failed to read from pipe at clone08.c:168:
> errno=EAGAIN(11): Resource temporarily unavailable
> 2. clone08 1 TBROK : The other end of the pipe was closed unexpectedly
> at clone08.c:168
> 3. clone08 4 TPASS : test CLONE_THREAD success
> clone08 1 TBROK : unexpected signal 11 received (pid = 8234).
> clone08 2 TBROK : Remaining cases broken
> clone08 1 TFAIL : son process exits error
> 4. no error, but test doesn't execute as many times as specified on command
> line
> 5. clone08 1 TBROK : unexpected signal 4 received (pid = 28936).
Some of above are caused by multiple threads reusing same stack area.
Trouble is that with single master child you can't be sure when
CLONE_THREAD child finished using its stack.
The idea I mentioned in v2 was basically what you did, but the loop for
testcases
would be outside master child - which means spawning master_child for each
testcase.
I'm travelling these days, but I can have a look at idea above later this week
and see how viable it is.
Regards,
Jan
>
> Regards,
> Jan
>
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