Re[32]: Warning: Got signal 14 from thread X

[Heikki Tuuri]

Monty and Alex,

maybe Monty discovered the source of the problem: Innobase indeed
modifies the sigmask of the thread which does the database intialization.
Maybe other threads then inherit the modified sigmask.

I had disabled the use of native Unix aio from Innobase, but forgot
the following segment of code into /innobase/os/os0file.c,
about line 920 in function os_aio_init:
.................................
        }

#ifdef POSIX_ASYNC_IO
        /* Block aio signals from the current thread and its children:
        for this to work, the current thread must be the first created
        in the database, so that all its children will inherit its
        signal mask */

        sigemptyset(&sigset);
        sigaddset(&sigset, SIGRTMIN + 1 + 0);
        sigaddset(&sigset, SIGRTMIN + 1 + 1);
        sigaddset(&sigset, SIGRTMIN + 1 + 2);
        sigaddset(&sigset, SIGRTMIN + 1 + 3);

        pthread_sigmask(SIG_BLOCK, &sigset, NULL);
#endif
}
.................................

Alex, try commenting out those lines, and check if the signal 14 error
still occurs.

Regards,

Heikki