Dan Williams cd066f3622 nospec: Kill array_index_nospec_mask_check() ... commit 1d91c1d2c8 upstream. There are multiple problems with the dynamic sanity checking in array_index_nospec_mask_check(): * It causes unnecessary overhead in the 32-bit case since integer sized @index values will no longer cause the check to be compiled away like in the 64-bit case. * In the 32-bit case it may trigger with user controllable input when the expectation is that should only trigger during development of new kernel enabling. * The macro reuses the input parameter in multiple locations which is broken if someone passes an expression like 'index++' to array_index_nospec(). Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arch@vger.kernel.org Link: http://lkml.kernel.org/r/151881604278.17395.6605847763178076520.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-04-08 11:52:01 +02:00
..
acpi
asm-generic	mm/vmalloc: add interfaces to free unmapped page table	2018-03-28 18:40:14 +02:00
clocksource
crypto	crypto: poly1305 - remove ->setkey() method	2018-02-16 20:09:43 +01:00
drm	drm: Allow determining if current task is output poll worker	2018-03-18 11:17:48 +01:00
dt-bindings	ARM: dts: Fix omap3 off mode pull defines	2017-11-21 09:21:19 +01:00
keys
kvm
linux	nospec: Kill array_index_nospec_mask_check()	2018-04-08 11:52:01 +02:00
math-emu
media	videobuf2-core: Check user space planes array in dqbuf	2016-05-04 14:48:50 -07:00
memory
misc
net	tcp: sysctl: Fix a race to avoid unexpected 0 window from space	2018-03-22 09:23:22 +01:00
pcmcia
ras
rdma	RDMA/ucma: Introduce safer rdma_addr_size() variants	2018-04-08 11:51:59 +02:00
rxrpc
scsi	scsi: sg: disable SET_FORCE_LOW_DMA	2018-01-23 19:50:14 +01:00
soc	ARM: at91: define LPDDR types	2017-03-12 06:37:24 +01:00
sound	ALSA: seq: Avoid invalid lockdep class warning	2017-11-15 17:13:12 +01:00
target	target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK	2018-01-17 09:35:31 +01:00
trace	clk: fix a panic error caused by accessing NULL pointer	2018-02-25 11:03:41 +01:00
uapi	PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant	2018-04-08 11:51:57 +02:00
video	drm/imx: Match imx-ipuv3-crtc components using device node in platform data	2016-06-07 18:14:37 -07:00
xen	fix xen_swiotlb_dma_mmap prototype	2017-10-05 09:41:48 +02:00
Kbuild