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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 19:39:53 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 19:39:53 +0200 |
| commit | dee4dcba78baf712cab403d47d9db319ab7f95d6 (patch) | |
| tree | 418478faf06786701a56268672f73d6b0b4eb239 /results/classifier/semantic-bugs/instruction/1204 | |
| parent | 4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff) | |
| download | qemu-analysis-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz qemu-analysis-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip | |
restructure results
Diffstat (limited to 'results/classifier/semantic-bugs/instruction/1204')
| -rw-r--r-- | results/classifier/semantic-bugs/instruction/1204 | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/results/classifier/semantic-bugs/instruction/1204 b/results/classifier/semantic-bugs/instruction/1204 deleted file mode 100644 index e47ce874a..000000000 --- a/results/classifier/semantic-bugs/instruction/1204 +++ /dev/null @@ -1,42 +0,0 @@ -instruction: 0.457 -device: 0.406 -graphic: 0.397 -semantic: 0.357 -network: 0.356 -socket: 0.345 -assembly: 0.330 -vnc: 0.306 -mistranslation: 0.284 -other: 0.165 -boot: 0.147 -KVM: 0.125 - -AArch64 unaligned accesses are allowed by QEMU when SCTLR_EL3.A is 0, but SCTLR_EL3.M is also 0 -Description of problem: -As per the ARM ARM, when address translation is disabled and the access is not done from EL1/0 with HCR_EL2.DC set to 1, data accesses receive the 'Device-nGnRnE' memory attribute (D.8.2.10 The effects of disabling an address translation stage - DDi0487I.a, Page D8-5119). -Memory regions marked as Device do not support unaligned access. -Steps to reproduce: -Run the following snippet under EL3, and notice the last load instruction completes successfully (doesn't raise an alignment fault) -``` -.balign 8 -.global first_variable -first_variable: - .word 0x1 -.balign 4 -.global second_variable -second_variable: - .word 0x2 - -no_mmu_sctlr: .dword 0x0000000030C51834 - -.globl reproducer -reproducer: - ldr x1, no_mmu_sctlr // A=0,M=0 - msr sctlr_el3, x1 - dsb sy - isb - - ldr x0, =first_variable - ldr x1, [x0, #0] // Aligned - Success - ldr x1, [x0, #4] // Unaligned - Success??? (Should be failure) -``` |