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Re: kern/47312: ACPI crash on Thinkpad T61

The following reply was made to PR kern/47312; it has been noted by GNATS.

From: Taylor R Campbell <>
Subject: Re: kern/47312: ACPI crash on Thinkpad T61
Date: Tue, 18 Jul 2023 10:30:08 +0000

 > Date: Tue, 11 Dec 2012 16:09:54 +0000 (UTC)
 > From:
 > Not on every boot, but many times the kernel hangs after printing:
 > ACPI Warning: 32/64X length mismatch in Gpe1Block: 0/32 (20110623/tbfadt-=
 > ACPI Warning: Optional field Gpe1Block has zero address or length: 0x0000=
 00000000102C/0x0 (20110623/tbfatd-586)
 I suspect this this is probably a red herring, like this one, where
 there was an ACPI warning message that had nothing to do with the
 silent hanging thread:
 We really need to know what's hanging here, e.g. by entering ddb and
 getting a stack trace.
 Can this still be reproduced?

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