Vineet Gupta d3b7bb5c5a ARC: entry: fix off-by-one error in syscall number validation ... commit 3433adc8bd upstream. We have NR_syscall syscalls from [0 .. NR_syscall-1]. However the check for invalid syscall number is "> NR_syscall" as opposed to >=. This off-by-one error erronesously allows "NR_syscall" to be treated as valid syscall causeing out-of-bounds access into syscall-call table ensuing a crash (holes within syscall table have a invalid-entry handler but this is beyond the array implementing the table). This problem showed up on v5.6 kernel when testing glibc 2.33 (v5.10 kernel capable, includng faccessat2 syscall 439). The v5.6 kernel has NR_syscalls=439 (0 to 438). Due to the bug, 439 passed by glibc was not handled as -ENOSYS but processed leading to a crash. Link: https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/48 Reported-by: Shahab Vahedi <shahab@synopsys.com> Cc: <stable@vger.kernel.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-22 10:57:39 +02:00
..
boot	ARC: [plat-hsdk]: Switch ethernet phy-mode to rgmii-id	2020-09-23 10:46:27 +02:00
configs	arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAM	2019-04-20 09:14:59 +02:00
include	arch/arc: add copy_user_page() to <asm/page.h> to fix build error on ARC	2021-01-23 15:48:42 +01:00
kernel	ARC: entry: fix off-by-one error in syscall number validation	2021-05-22 10:57:39 +02:00
lib	ARCv2: lib: memcpy: fix doing prefetchw outside of buffer	2019-03-23 14:35:16 +01:00
mm	ARC: fix build warnings	2019-06-25 11:36:51 +08:00
oprofile
plat-axs10x
plat-eznps	irqchip/eznps: Fix build error for !ARC700 builds	2020-09-23 10:46:27 +02:00
plat-hsdk	arc: plat-hsdk: fix kconfig dependency warning when !RESET_CONTROLLER	2020-10-29 09:07:09 +01:00
plat-sim
plat-tb10x
Kbuild
Kconfig	ARCv2: support manual regfile save on interrupts	2019-03-23 14:35:16 +01:00
Kconfig.debug
Makefile	ARC: build: add boot_targets to PHONY	2021-01-23 15:48:41 +01:00