Andy Lutomirski c876eeab64 signals/sigaltstack: If SS_AUTODISARM, bypass on_sig_stack() ... If a signal stack is set up with SS_AUTODISARM, then the kernel inherently avoids incorrectly resetting the signal stack if signals recurse: the signal stack will be reset on the first signal delivery. This means that we don't need check the stack pointer when delivering signals if SS_AUTODISARM is set. This will make segmented x86 programs more robust: currently there's a hole that could be triggered if ESP/RSP appears to point to the signal stack but actually doesn't due to a nonzero SS base. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Amanieu d'Antras <amanieu@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Jason Low <jason.low2@hp.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Moore <pmoore@redhat.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Richard Weinberger <richard@nod.at> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Stas Sergeev <stsp@list.ru> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: linux-api@vger.kernel.org Link: http://lkml.kernel.org/r/c46bee4654ca9e68c498462fd11746e2bd0d98c8.1462296606.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2016-05-04 08:34:13 +02:00
..
acpi	Merge branches 'acpi-processor' and 'acpi-cppc'	2016-03-14 14:20:33 +01:00
asm-generic	asm-generic/futex: Re-enable preemption in futex_atomic_cmpxchg_inatomic()	2016-04-21 11:06:09 +02:00
clocksource
crypto	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2016-03-17 11:33:45 -07:00
drm	drm: Loongson-3 doesn't fully support wc memory	2016-04-22 10:24:11 +10:00
dt-bindings	The clk changes for this release cycle are mostly dominated by	2016-03-23 06:06:45 -07:00
keys
kvm
linux	signals/sigaltstack: If SS_AUTODISARM, bypass on_sig_stack()	2016-05-04 08:34:13 +02:00
math-emu
media	[media] media: vb2: Fix regression on poll() for RW mode	2016-04-25 10:21:23 -03:00
memory
misc
net	switchdev: Adding complete operation to deferred switchdev ops	2016-04-24 14:23:32 -04:00
pcmcia
ras
rdma	IB/security: Restrict use of the write() interface	2016-04-28 12:03:16 -04:00
rxrpc
scsi	Merge branch 'fixes-base' into fixes	2016-04-05 06:56:47 -04:00
soc	IOMMU Updates for Linux v4.6	2016-03-22 11:57:43 -07:00
sound	ALSA: hda - Update BCLK also at hotplug for i915 HSW/BDW	2016-04-26 10:11:11 +02:00
target	target: add a new add_wwn_groups fabrics method	2016-03-30 20:06:44 -07:00
trace	Merge branch 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2016-04-09 10:41:34 -07:00
uapi	signals/sigaltstack: Implement SS_AUTODISARM flag	2016-05-03 08:37:59 +02:00
video	gpu: ipu-v3: ipu-dmfc: Rename ipu_dmfc_init_channel to ipu_dmfc_config_wait4eot	2016-03-31 11:24:33 +02:00
xen	xen-netback: re-import canonical netif header	2016-03-13 22:08:01 -04:00
Kbuild