Please find below a trivial patch that changes the sending of BUS_MCEERR_AO SIGBUS signals so that they can be handled by an arbitrary thread of the target process. The current implementation makes it impossible to create a separate, dedicated thread to handle such errors, as the signal is always sent to the main thread. Also, do I understand it correctly that "action required" faults *must* be handled by the thread that triggered the error? I guess it makes sense for it to be that way, even if it circumvents the "dedicated handling thread" idea... The patch is against the 3.12.4 kernel. --- mm/memory-failure.c.orig 2013-12-08 10:18:58.000000000 -0600 +++ mm/memory-failure.c 2013-12-12 11:43:03.973334767 -0600 @@ -219,7 +219,7 @@ static int kill_proc(struct task_struct * to SIG_IGN, but hopefully no one will do that? */ si.si_code = BUS_MCEERR_AO; - ret = send_sig_info(SIGBUS, &si, t); /* synchronous? */ + ret = group_send_sig_info(SIGBUS, &si, t); /* synchronous? */ } if (ret < 0) printk(KERN_INFO "MCE: Error sending signal to %s:%d: %d\n", Thanks, Kamil -- Kamil Iskra, PhD Argonne National Laboratory, Mathematics and Computer Science Division 9700 South Cass Avenue, Building 240, Argonne, IL 60439, USA phone: +1-630-252-7197 fax: +1-630-252-5986 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>