Nobody can block/ignore SIGSTOP, no need to use force_sig_specific() in
ptrace_attach. Use the "regular" send_sig_info().
With this patch stracing of /sbin/init doesn't clear its SIGNAL_UNKILLABLE,
but not that this makes ptracing of init safe.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
__ptrace_link(task, current);
- force_sig_specific(SIGSTOP, task);
-
+ send_sig_info(SIGSTOP, SEND_SIG_FORCED, task);
bad:
write_unlock_irqrestore(&tasklist_lock, flags);
task_unlock(task);