[lttng-dev] SIGABRT using lttng-relayd in lttng_ht_destroy ()

[Julien Desfossez]

Hi,

The fix has been backported up to the stable-2.4 branch, you should try
to update and make sure it does not happen anymore.
If it still happens, please file a bug report with the exact condition
on how/when it is triggered with the full log of "lttng-relayd -vvv
>relayd.log 2>&1" and "lttng-sessiond -vvv --verbose-consumer
>sessiond.log 2>&1".

Thanks,

Julien

On 14-11-18 02:06 AM, Anand Neeli wrote:
> Hi All,
> I'm using 2.4.1 and all of a sudden i see relayd getting coredumped.
> I see that its backtrace(shown below) is similar to that
> of https://bugs.lttng.org/issues/722 [SIGABRT using lttng-relayd
> (assertion failed)]
> 
> I'm not sure what is the trigger for this, but it happens randomly.
> Can anyone tell me if these issues are same?
> Also i see the fix is targeted for 2.6
> 
> Core was generated by `/usr/bin/lttng-relayd -o /var/tmp/lttng-traces -d'.
> Program terminated with signal 6, Aborted.
> #0  0xf755de2d in __GI_raise (sig=sig at entry=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
> 56        return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
> #0  0xf755de2d in __GI_raise (sig=sig at entry=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
> #1  0xf7561327 in __GI_abort () at abort.c:90
> #2  0xf7556e14 in __assert_fail_base (fmt=0xf7664464 "%s%s%s:%u:
> %s%sAssertion `%s' failed.\n%n", assertion=assertion at entry=0xf76f4beb
> "!ret", file=file at entry=0xf76f4f7b "hashtable.c", line=line at entry=143,
> function=function at entry=0xf76f508e "lttng_ht_destroy") at assert.c:92
> #3  0xf7556ed7 in __GI___assert_fail (assertion=0xf76f4beb "!ret",
> file=0xf76f4f7b "hashtable.c", line=143, function=0xf76f508e
> "lttng_ht_destroy") at assert.c:101
> #4  0xf76e7ee2 in lttng_ht_destroy () from /usr/lib/liblttng-ctl.so.0
> #5  0x0804d379 in ?? ()
> #6  0xf76aeaf7 in start_thread (arg=0xf650fb40) at pthread_create.c:311
> #7  0xf7609dde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131
> 
> 
> Thanks,
> Anand Neeli