Oleg Nesterov ceca3c193e tile: do_hardwall_trap: do not play with task->sighand ... 1. do_hardwall_trap() checks ->sighand != NULL and then takes ->siglock. This is unsafe even if the task can't run (I assume it is pinned to the same CPU), its parent can reap the task and set ->sighand = NULL right after this check. Even if the compiler dosn't read ->sighand twice and this memory can't to away __group_send_sig_info() is wrong after that. Use do_send_sig_info(). 2. Send SIGILL to the thread, not to the whole process. Unless it has the handler or blocked this kills the whole thread-group as before. IIUC, different threads can be bound to different rect's. 3. Check PF_EXITING instead of ->sighand. A zombie thread can go away but its ->sighand can be !NULL. Reported-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>		2011-05-04 14:41:53 -04:00
..
configs	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
include	tile: replace mm->cpu_vm_mask with mm_cpumask()	2011-05-04 14:41:44 -04:00
kernel	tile: do_hardwall_trap: do not play with task->sighand	2011-05-04 14:41:53 -04:00
kvm	arch/tile: parameterize system PLs to support KVM port	2010-10-15 15:38:09 -04:00
lib	arch/tile: disable GX prefetcher during cache flush	2011-05-04 14:40:46 -04:00
mm	arch/tile: support TIF_NOTIFY_RESUME	2011-05-02 18:53:35 -04:00
Kbuild	arch/tile: core support for Tilera 32-bit chips.	2010-06-04 17:11:18 -04:00
Kconfig	arch/tile: improve support for PCI hotplug	2011-05-04 14:39:53 -04:00
Kconfig.debug	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
Makefile	arch/tile: parameterize system PLs to support KVM port	2010-10-15 15:38:09 -04:00