Mark Rutland 0bb1fbffc6 arm64: mm: kfence: only handle translation faults ... Alexander noted that KFENCE only expects to handle faults from invalid page table entries (i.e. translation faults), but arm64's fault handling logic will call kfence_handle_page_fault() for other types of faults, including alignment faults caused by unaligned atomics. This has the unfortunate property of causing those other faults to be reported as "KFENCE: use-after-free", which is misleading and hinders debugging. Fix this by only forwarding unhandled translation faults to the KFENCE code, similar to what x86 does already. Alexander has verified that this passes all the tests in the KFENCE test suite and avoids bogus reports on misaligned atomics. Link: https://lore.kernel.org/all/20221102081620.1465154-1-zhongbaisong@huawei.com/ Fixes: 840b239863 ("arm64, kfence: enable KFENCE for ARM64") Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Alexander Potapenko <glider@google.com> Tested-by: Alexander Potapenko <glider@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Marco Elver <elver@google.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20221114104411.2853040-1-mark.rutland@arm.com Signed-off-by: Will Deacon <will@kernel.org>		2022-11-15 13:29:05 +00:00
..
boot	Armv8 Juno fix for v6.1	2022-11-02 21:58:46 +01:00
configs	This update includes the following changes:	2022-10-10 13:04:25 -07:00
crypto	This update includes the following changes:	2022-10-10 13:04:25 -07:00
hyperv	hyperv: simplify and rename generate_guest_id	2022-09-28 13:36:56 +00:00
include	arm64/mm: Simplify and document pte_to_phys() for 52 bit addresses	2022-11-09 18:13:18 +00:00
kernel	arm64 fixes:	2022-11-04 19:52:24 -07:00
kvm	KVM: arm64: Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE	2022-11-01 15:56:52 +00:00
lib	Networking changes for 6.0.	2022-08-03 16:29:08 -07:00
mm	arm64: mm: kfence: only handle translation faults	2022-11-15 13:29:05 +00:00
net	bpf: arm64: No support of struct argument in trampoline programs	2022-09-06 19:51:14 -07:00
tools	arm64/sysreg: Fix typo in SCTR_EL1.SPINTMASK	2022-10-07 14:30:11 +01:00
xen
Kbuild
Kconfig	arm64 fixes:	2022-10-14 12:38:03 -07:00
Kconfig.debug
Kconfig.platforms	ARM: SoC code changes for 6.1	2022-10-06 11:22:25 -07:00
Makefile	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00