https://github.com/torvalds/linux
Revision bf708cfb2f4811d1948a88c41ab96587e84ad344 authored by Jerry Snitselaar on 22 January 2020, 00:34:26 UTC, committed by Joerg Roedel on 24 January 2020, 14:23:50 UTC
It is possible for archdata.iommu to be set to
DEFER_DEVICE_DOMAIN_INFO or DUMMY_DEVICE_DOMAIN_INFO so check for
those values before calling __dmar_remove_one_dev_info. Without a
check it can result in a null pointer dereference. This has been seen
while booting a kdump kernel on an HP dl380 gen9.

Cc: Joerg Roedel <joro@8bytes.org>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: stable@vger.kernel.org # 5.3+
Cc: linux-kernel@vger.kernel.org
Fixes: ae23bfb68f28 ("iommu/vt-d: Detach domain before using a private one")
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
1 parent def9d27
History
Tip revision: bf708cfb2f4811d1948a88c41ab96587e84ad344 authored by Jerry Snitselaar on 22 January 2020, 00:34:26 UTC
iommu/vt-d: Call __dmar_remove_one_dev_info with valid pointer
Tip revision: bf708cf
File Mode Size
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LICENSES
arch
block
certs
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 15.0 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 62 bytes
.gitignore -rw-r--r-- 1.7 KB
.mailmap -rw-r--r-- 14.1 KB
COPYING -rw-r--r-- 423 bytes
CREDITS -rw-r--r-- 97.3 KB
Kbuild -rw-r--r-- 1.3 KB
Kconfig -rw-r--r-- 595 bytes
MAINTAINERS -rw-r--r-- 526.7 KB
Makefile -rw-r--r-- 59.4 KB
README -rw-r--r-- 727 bytes

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