Date: Sun, 18 Feb 2018 16:03:50 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r329521 - head/sys/x86/iommu Message-ID: <201802181603.w1IG3oYd035923@repo.freebsd.org>
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Author: markj Date: Sun Feb 18 16:03:50 2018 New Revision: 329521 URL: https://svnweb.freebsd.org/changeset/base/329521 Log: Don't include DMAR map entry zone items in kernel dumps. Such items may be allocated in the I/O path used by the dumper, potentially causing the dump to fail. Since there is some precedent in the DMAR driver for avoiding this problem using _NODUMP, apply this workaround to the zone as well. Reported and tested by: mmacy Reviewed by: kib MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D14422 Modified: head/sys/x86/iommu/intel_gas.c Modified: head/sys/x86/iommu/intel_gas.c ============================================================================== --- head/sys/x86/iommu/intel_gas.c Sun Feb 18 15:27:24 2018 (r329520) +++ head/sys/x86/iommu/intel_gas.c Sun Feb 18 16:03:50 2018 (r329521) @@ -81,7 +81,7 @@ intel_gas_init(void) dmar_map_entry_zone = uma_zcreate("DMAR_MAP_ENTRY", sizeof(struct dmar_map_entry), NULL, NULL, - NULL, NULL, UMA_ALIGN_PTR, 0); + NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NODUMP); } SYSINIT(intel_gas, SI_SUB_DRIVERS, SI_ORDER_FIRST, intel_gas_init, NULL);
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