superpmi-asmdiffs-checked-release: ASM diffs found in libraries.crossgen2.linux.arm.checked.mch

[JulieLeeMSFT]

Found in runtime-coreclr superpmi-asmdiffs-checked-release/20260714.1

• SuperPMI asmdiffs checked release windows x86

Console Log: Link

Error Message

[17:26:59] Running asm diffs of C:\h\w\B87809FF\p\artifacts\spmi\mch\3ff14624-7bec-4037-b0c0-c75d03d6433c.linux.arm\libraries.crossgen2.linux.arm.checked.mch

[17:26:59] Invoking: C:\h\w\B87809FF\p\superpmi.exe -a -v ewi -f C:\h\w\B87809FF\t\tmpws5mg78j\libraries.crossgen2.linux.arm.checked.mch_fail.mcl -details C:\h\w\B87809FF\t\tmpws5mg78j\libraries.crossgen2.linux.arm.checked.mch_details.csv -target arm -jitoption force JitEnableNoWayAssert=1 -jitoption force JitNoForceFallback=1 -jitoption force JitAlignLoops=0 -jit2option force JitEnableNoWayAssert=1 -jit2option force JitNoForceFallback=1 -jit2option force JitAlignLoops=0 -p -failureLimit 100 -ignoreStoredConfig C:\h\w\B87809FF\p\base\clrjit_universal_arm_x86.dll C:\h\w\B87809FF\p\diff\clrjit_universal_arm_x86.dll C:\h\w\B87809FF\p\artifacts\spmi\mch\3ff14624-7bec-4037-b0c0-c75d03d6433c.linux.arm\libraries.crossgen2.linux.arm.checked.mch

[17:28:14] ISSUE: <ASM_DIFF> main method 74425 of size 57 differs

[17:28:14] ISSUE: <ASM_DIFF> main method 74423 of size 84 differs

[17:28:17] Asm diffs found

[17:28:17] Method numbers with compilation failures:

[17:28:17] 85333

[17:28:17] 85432

[17:28:17] 85440

[17:28:17] 85544

[17:28:17] 100007

[17:28:17] 127553

[17:28:17] 127606

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[AndyAyersMS]

Looks like a problem with the near differ reporting false positives, depending on where the replay code buffers get allocated (intermittent, can shift from one method to another in consecutive runs).