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| author | gVisor bot <gvisor-bot@google.com> | 2020-10-21 19:56:28 +0000 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-10-21 19:56:28 +0000 |
| commit | 96a310bd32f1baa795a6d0303713f96f6fbcfedb (patch) | |
| tree | 8c2c3f243eb3de2530e70ec4372b9c29cccd70eb /pkg | |
| parent | 1bb5490c643125298570fdb80c20862c367bec58 (diff) | |
| parent | 1b2097f84ed3425d4e417a92c08b36e3888b8ebb (diff) | |
Merge release-20201019.0-22-g1b2097f84 (automated)
Diffstat (limited to 'pkg')
| -rw-r--r-- | pkg/sentry/platform/kvm/machine_arm64_unsafe.go | 5 | ||||
| -rw-r--r-- | pkg/sentry/platform/ring0/entry_impl_arm64.s | 34 |
2 files changed, 18 insertions, 21 deletions
diff --git a/pkg/sentry/platform/kvm/machine_arm64_unsafe.go b/pkg/sentry/platform/kvm/machine_arm64_unsafe.go index a163f956d..84992c06d 100644 --- a/pkg/sentry/platform/kvm/machine_arm64_unsafe.go +++ b/pkg/sentry/platform/kvm/machine_arm64_unsafe.go @@ -235,8 +235,9 @@ func (c *vCPU) SwitchToUser(switchOpts ring0.SwitchOpts, info *arch.SignalInfo) return c.fault(int32(syscall.SIGSEGV), info) case ring0.Vector(bounce): // ring0.VirtualizationException return usermem.NoAccess, platform.ErrContextInterrupt - case ring0.El0Sync_undef, - ring0.El1Sync_undef: + case ring0.El0Sync_undef: + return c.fault(int32(syscall.SIGILL), info) + case ring0.El1Sync_undef: *info = arch.SignalInfo{ Signo: int32(syscall.SIGILL), Code: 1, // ILL_ILLOPC (illegal opcode). diff --git a/pkg/sentry/platform/ring0/entry_impl_arm64.s b/pkg/sentry/platform/ring0/entry_impl_arm64.s index 05ff9ebd9..19eb3d090 100644 --- a/pkg/sentry/platform/ring0/entry_impl_arm64.s +++ b/pkg/sentry/platform/ring0/entry_impl_arm64.s @@ -436,6 +436,19 @@ MOVD R4, CPU_REGISTERS+PTRACE_SP(RSV_REG); \ LOAD_KERNEL_STACK(RSV_REG); // Load the temporary stack. +// EXCEPTION_WITH_ERROR is a common exception handler function. +#define EXCEPTION_WITH_ERROR(user, vector) \ + WORD $0xd538d092; \ //MRS TPIDR_EL1, R18 + WORD $0xd538601a; \ //MRS FAR_EL1, R26 + MOVD R26, CPU_FAULT_ADDR(RSV_REG); \ + MOVD $user, R3; \ + MOVD R3, CPU_ERROR_TYPE(RSV_REG); \ // Set error type to user. + MOVD $vector, R3; \ + MOVD R3, CPU_VECTOR_CODE(RSV_REG); \ + MRS ESR_EL1, R3; \ + MOVD R3, CPU_ERROR_CODE(RSV_REG); \ + B ·kernelExitToEl1(SB); + // storeAppASID writes the application's asid value. TEXT ·storeAppASID(SB),NOSPLIT,$0-8 MOVD asid+0(FP), R1 @@ -729,21 +742,7 @@ el0_svc: el0_da: el0_ia: - WORD $0xd538d092 //MRS TPIDR_EL1, R18 - WORD $0xd538601a //MRS FAR_EL1, R26 - - MOVD R26, CPU_FAULT_ADDR(RSV_REG) - - MOVD $1, R3 - MOVD R3, CPU_ERROR_TYPE(RSV_REG) // Set error type to user. - - MOVD $PageFault, R3 - MOVD R3, CPU_VECTOR_CODE(RSV_REG) - - MRS ESR_EL1, R3 - MOVD R3, CPU_ERROR_CODE(RSV_REG) - - B ·kernelExitToEl1(SB) + EXCEPTION_WITH_ERROR(1, PageFault) el0_fpsimd_acc: B ·Shutdown(SB) @@ -758,10 +757,7 @@ el0_sp_pc: B ·Shutdown(SB) el0_undef: - MOVD $El0Sync_undef, R3 - MOVD R3, CPU_VECTOR_CODE(RSV_REG) - - B ·kernelExitToEl1(SB) + EXCEPTION_WITH_ERROR(1, El0Sync_undef) el0_dbg: B ·Shutdown(SB) |