[Bug 235783] Repeated ZFS-related kernel panic

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235783

--- Comment #10 from Andriy Gapon <avg at FreeBSD.org> ---
(In reply to Jurij Kovacic from comment #9)
Okay, compare the value of r13 (and this is the original db pointer) to the
value in rcx. They differ by a single bit:
(gdb) p/x 0xfffff8028de9cae0 ^ 0xffff78028de9cae0
$1 = 0x800000000000

The values in rbx and rax are derived from the value in rcx.  And the crash
happens when accessing the address stored in rax.

This was a long way to say that most likely you got a single bit flip on the
hardware level.  I assume that the RAM is not ECC.

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