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I'm seeing the following divergence while replaying a tcmalloc-utilizing program on arm64:
[FATAL src/ReplaySession.cc:1226:check_ticks_consistency()]
(task 2944657 (rec:2944634) at time 424)
-> Assertion `ticks_now == trace_ticks' failed to hold. ticks mismatch for 'SIGNAL: SIGSEGV(det)'; expected 10014507, got 10014509
I suspect this to be caused by accesses to CNTVCT_EL0 in the tcmalloc code. Unfortunately the kernel does not support trapping on count register access on arm64:
I'm seeing the following divergence while replaying a tcmalloc-utilizing program on arm64:
I suspect this to be caused by accesses to
CNTVCT_EL0
in the tcmalloc code. Unfortunately the kernel does not support trapping on count register access on arm64:It would be possible for the kernel to configure the CPU to trap on this access by clearing
CNTKCTL_EL1.EL0VCTEN
.The text was updated successfully, but these errors were encountered: