• Bhavesh P. Davda's avatar
    [PATCH] NPTL signal delivery deadlock fix · dd12f48d
    Bhavesh P. Davda authored
    This bug is quite subtle and only happens in a very interesting
    situation where a real-time threaded process is in the middle of a
    coredump when someone whacks it with a SIGKILL.  However, this deadlock
    leaves the system pretty hosed and you have to reboot to recover.
    
    Not good for real-time priority-preemption applications like our
    telephony application, with 90+ real-time (SCHED_FIFO and SCHED_RR)
    processes, many of them multi-threaded, interacting with each other for
    high volume call processing.
    Acked-by: default avatarRoland McGrath <roland@redhat.com>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    dd12f48d
signal.c 69.3 KB