linux/arch/arm64/kvm
Marc Zyngier 9eb18136af KVM: arm64: vgic: Hold config_lock while tearing down a CPU interface
Tearing down a vcpu CPU interface involves freeing the private interrupt
array. If we don't hold the lock, we may race against another thread
trying to configure it. Yeah, fuzzers do wonderful things...

Taking the lock early solves this particular problem.

Fixes: 03b3d00a70 ("KVM: arm64: vgic: Allocate private interrupts on demand")
Reported-by: Alexander Potapenko <glider@google.com>
Tested-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240808091546.3262111-1-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-08-08 16:58:22 +00:00
..
hyp KVM: arm64: Tidying up PAuth code in KVM 2024-08-07 19:11:05 +00:00
vgic KVM: arm64: vgic: Hold config_lock while tearing down a CPU interface 2024-08-08 16:58:22 +00:00
.gitignore KVM: arm64: Generate hyp_constants.h for the host 2021-12-06 08:37:03 +00:00
arch_timer.c KVM: arm64: Fix typos 2024-02-24 09:13:33 +00:00
arm.c KVM: arm64: Tidying up PAuth code in KVM 2024-08-07 19:11:05 +00:00
debug.c KVM: arm64: debug: fix kernel-doc warnings 2024-02-01 20:25:41 +00:00
emulate-nested.c Merge branch kvm-arm64/nv-tcr2 into kvmarm/next 2024-07-14 00:28:37 +00:00
fpsimd.c KVM: arm64: nv: Ensure correct VL is loaded before saving SVE state 2024-06-20 19:02:40 +00:00
guest.c KVM: arm64: Allow AArch32 PSTATE.M to be restored as System mode 2024-05-27 17:45:35 +01:00
handle_exit.c Merge branch kvm-arm64/nv-sve into kvmarm/next 2024-07-14 00:27:06 +00:00
hypercalls.c Merge branch kvm-arm64/smccc-filter-cleanups into kvmarm/next 2023-10-30 20:18:37 +00:00
inject_fault.c KVM: arm64: Fix typos 2024-02-24 09:13:33 +00:00
Kconfig KVM: arm64: Enforce dependency on an ARMv8.4-aware toolchain 2024-08-07 19:09:35 +00:00
Makefile KVM: arm64: fix override-init warnings in W=1 builds 2024-08-02 18:58:03 +00:00
mmio.c KVM: arm64: Force injection of a data abort on NISV MMIO exit 2024-05-01 16:48:15 +01:00
mmu.c KVM: arm64: nv: Tag shadow S2 entries with guest's leaf S2 level 2024-06-19 08:14:38 +00:00
nested.c KVM: arm64: free kvm->arch.nested_mmus with kvfree() 2024-08-02 18:57:30 +00:00
pauth.c KVM: arm64: nv: Work around lack of pauth support in old toolchains 2024-04-23 19:27:11 +01:00
pkvm.c KVM: arm64: Prevent kmemleak from accessing .hyp.data 2024-05-01 16:48:14 +01:00
pmu-emul.c ARM: 2024-07-20 12:41:03 -07:00
pmu.c KVM: arm64: Add accessor for per-CPU state 2024-04-12 13:57:30 +01:00
psci.c Merge branch kvm-arm64/smccc-filtering into kvmarm-master/next 2023-04-21 09:44:32 +01:00
pvtime.c KVM: MMU: Make the definition of 'INVALID_GPA' common 2023-01-19 21:48:38 +00:00
reset.c KVM: arm64: nv: Support multiple nested Stage-2 mmu structures 2024-06-19 08:13:49 +00:00
stacktrace.c arm64: stacktrace: track hyp stacks in unwinder's address space 2022-09-09 12:30:08 +01:00
sys_regs.c Merge branch kvm-arm64/nv-tcr2 into kvmarm/next 2024-07-14 00:28:37 +00:00
sys_regs.h KVM: arm64: Rename __check_nv_sr_forward() to triage_sysreg_trap() 2024-02-19 17:13:01 +00:00
trace_arm.h KVM: arm64: Add tracepoint for MMIO accesses where ISV==0 2023-10-30 20:17:22 +00:00
trace_handle_exit.h KVM: arm64: Upgrade trace_kvm_arm_set_dreg32() to 64bit 2021-08-20 11:12:18 +01:00
trace.h KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
trng.c KVM: arm64: Implement the TRNG hypervisor call 2021-01-25 22:19:31 +00:00
va_layout.c arm64: alternatives: kvm: prepare for cap changes 2022-09-16 17:15:02 +01:00
vgic-sys-reg-v3.c KVM: arm64: vgic-v3: Convert userspace accessors over to FIELD_GET/FIELD_PREP 2022-07-17 11:55:33 +01:00
vmid.c KVM: arm64: Reload stage-2 for VMID change on VHE 2023-10-20 17:52:01 +00:00