Khalid Aziz f27af42b1f sparc64: Use arch_validate_flags() to validate ADI flag ... [ Upstream commit 147d8622f2a26ef34beacc60e1ed8b66c2fa457f ] When userspace calls mprotect() to enable ADI on an address range, do_mprotect_pkey() calls arch_validate_prot() to validate new protection flags. arch_validate_prot() for sparc looks at the first VMA associated with address range to verify if ADI can indeed be enabled on this address range. This has two issues - (1) Address range might cover multiple VMAs while arch_validate_prot() looks at only the first VMA, (2) arch_validate_prot() peeks at VMA without holding mmap lock which can result in race condition. arch_validate_flags() from commit c462ac288f ("mm: Introduce arch_validate_flags()") allows for VMA flags to be validated for all VMAs that cover the address range given by user while holding mmap lock. This patch updates sparc code to move the VMA check from arch_validate_prot() to arch_validate_flags() to fix above two issues. Suggested-by: Jann Horn <jannh@google.com> Suggested-by: Christoph Hellwig <hch@infradead.org> Suggested-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-03-17 17:06:24 +01:00
..
boot	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
configs	scsi: sr: remove references to BLK_DEV_SR_VENDOR, leave it enabled	2020-02-24 14:59:01 -05:00
crypto	crypto: sparc - rename sha256 to sha256_alg	2020-07-16 21:49:04 +10:00
include	sparc64: Use arch_validate_flags() to validate ADI flag	2021-03-17 17:06:24 +01:00
kernel	sparc: fix led.c driver when PROC_FS is not enabled	2021-03-04 11:38:10 +01:00
lib	sparc32: fix a user-triggerable oops in clear_user()	2021-03-04 11:38:43 +01:00
math-emu	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mm	sparc32: Limit memblock allocation to low memory	2021-03-17 17:06:24 +01:00
net	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
oprofile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
power	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
prom	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vdso	treewide: remove DISABLE_LTO	2020-10-21 00:28:53 +09:00
Kbuild	treewide: Add SPDX license identifier - Kbuild	2019-05-30 11:32:33 -07:00
Kconfig	sparc64: only select COMPAT_BINFMT_ELF if BINFMT_ELF is set	2021-03-04 11:38:10 +01:00
Kconfig.debug	Kconfig: consolidate the "Kernel hacking" menu	2018-08-02 08:06:48 +09:00
Makefile	sparc: generate uapi header and system call table files	2018-11-18 18:52:22 -08:00