linux/arch/x86
Boris Ostrovsky 28b92e09e2 x86, vdso, time: Cast tv_nsec to u64 for proper shifting in update_vsyscall()
With tk->wall_to_monotonic.tv_nsec being a 32-bit value on 32-bit
systems, (tk->wall_to_monotonic.tv_nsec << tk->shift) in update_vsyscall()
may lose upper bits or, worse, add them since compiler will do this:
	(u64)(tk->wall_to_monotonic.tv_nsec << tk->shift)
instead of
	((u64)tk->wall_to_monotonic.tv_nsec << tk->shift)

So if, for example, tv_nsec is 0x800000 and shift is 8 we will end up
with 0xffffffff80000000 instead of 0x80000000. And then we are stuck in
the subsequent 'while' loop.

We need an explicit cast.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: http://lkml.kernel.org/r/1399648287-15178-1-git-send-email-boris.ostrovsky@oracle.com
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: <stable@vger.kernel.org> # v3.14
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-05-09 08:45:52 -07:00
..
boot asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
configs ACPI: Remove Kconfig symbol ACPI_PROCFS 2014-02-19 00:27:37 +01:00
crypto crypto: ghash-clmulni-intel - use C implementation for setkey() 2014-04-01 17:22:47 +08:00
ia32 constify copy_siginfo_to_user{,32}() 2013-11-09 00:16:29 -05:00
include x86: Fix typo in MSR_IA32_MISC_ENABLE_LIMIT_CPUID macro 2014-05-09 08:42:47 -07:00
kernel x86, vdso, time: Cast tv_nsec to u64 for proper shifting in update_vsyscall() 2014-05-09 08:45:52 -07:00
kvm asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
lguest asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
lib x86: Fix typo preventing msr_set/clear_bit from having an effect 2014-05-09 08:42:32 -07:00
math-emu asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
mm arch/x86/mm/kmemcheck/kmemcheck.c: use kstrtoint() instead of sscanf() 2014-04-08 16:48:52 -07:00
net net: filter: add jited flag to indicate jit compiled filters 2014-03-31 00:45:08 -04:00
oprofile x86, oprofile, nmi: Fix CPU hotplug callback registration 2014-03-20 13:43:43 +01:00
pci CPU hotplug notifiers registration fixes for 3.15-rc1 2014-04-07 14:55:46 -07:00
platform asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
power asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
realmode Merge commit 'f4bcd8ccddb02833340652e9f46f5127828eb79d' into x86/build 2014-01-29 09:07:00 -08:00
syscalls x86/build: Supress "Nothing to be done for ..." messages 2014-04-14 11:44:36 +02:00
tools x86/build: Supress "Nothing to be done for ..." messages 2014-04-14 11:44:36 +02:00
um x86: Remove CONFIG_X86_OOSTORE 2014-03-11 10:16:18 -07:00
vdso Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-04-22 09:09:06 -07:00
video
xen asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
.gitignore
Kbuild
Kconfig Merge git://git.infradead.org/users/eparis/audit 2014-04-12 12:38:53 -07:00
Kconfig.cpu Merge branch 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-04-02 13:15:58 -07:00
Kconfig.debug x86/efi: Dump the EFI page table 2014-03-04 16:17:17 +00:00
Makefile x86-64, build: Fix stack protector Makefile breakage with 32-bit userland 2014-05-07 14:14:44 -07:00
Makefile.um
Makefile_32.cpu