From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Joerg Roedel <jroedel@suse.de>
Subject: [PATCH 3.14 14/30] iommu/amd: Handle large pages correctly in free_pagetable
Date: Wed, 8 Jul 2015 00:34:13 -0700 [thread overview]
Message-ID: <20150708073159.645349728@linuxfoundation.org> (raw)
In-Reply-To: <20150708073155.841723465@linuxfoundation.org>
3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joerg Roedel <jroedel@suse.de>
commit 0b3fff54bc01e8e6064d222a33e6fa7adabd94cd upstream.
Make sure that we are skipping over large PTEs while walking
the page-table tree.
Fixes: 5c34c403b723 ("iommu/amd: Fix memory leak in free_pagetable")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iommu/amd_iommu.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1922,9 +1922,15 @@ static void free_pt_##LVL (unsigned long
pt = (u64 *)__pt; \
\
for (i = 0; i < 512; ++i) { \
+ /* PTE present? */ \
if (!IOMMU_PTE_PRESENT(pt[i])) \
continue; \
\
+ /* Large PTE? */ \
+ if (PM_PTE_LEVEL(pt[i]) == 0 || \
+ PM_PTE_LEVEL(pt[i]) == 7) \
+ continue; \
+ \
p = (unsigned long)IOMMU_PTE_PAGE(pt[i]); \
FN(p); \
} \
next prev parent reply other threads:[~2015-07-08 7:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-08 7:33 [PATCH 3.14 00/30] 3.14.48-stable review Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 01/30] sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in softirq context Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 02/30] bridge: fix multicast router rlist endless loop Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 03/30] net: dont wait for order-3 page allocation Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 04/30] sctp: fix ASCONF list handling Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 05/30] bridge: fix br_stp_set_bridge_priority race conditions Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 06/30] packet: read num_members once in packet_rcv_fanout() Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 07/30] packet: avoid out of bounds read in round robin fanout Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 08/30] neigh: do not modify unlinked entries Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 09/30] tcp: Do not call tcp_fastopen_reset_cipher from interrupt context Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 10/30] net: phy: fix phy link up when limiting speed via device tree Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 11/30] sctp: Fix race between OOTB responce and route removal Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 12/30] crypto: talitos - avoid memleak in talitos_alg_alloc() Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 13/30] Revert "crypto: talitos - convert to use be16_add_cpu()" Greg Kroah-Hartman
2015-07-08 7:34 ` Greg Kroah-Hartman [this message]
2015-07-08 7:34 ` [PATCH 3.14 15/30] intel_pstate: set BYT MSR with wrmsrl_on_cpu() Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 16/30] arm: KVM: force execution of HCPTR access on VM exit Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 17/30] powerpc/perf: Fix book3s kernel to userspace backtraces Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 18/30] x86/PCI: Use host bridge _CRS info on systems with >32 bit addressing Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 19/30] x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 20/30] MIPS: Fix KVM guest fixmap address Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 22/30] fs: Fix S_NOSEC handling Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 23/30] vfs: Remove incorrect debugging WARN in prepend_path Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 24/30] vfs: Ignore unlocked mounts in fs_fully_visible Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 25/30] arm/arm64: KVM: Require in-kernel vgic for the arch timers Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 26/30] arm64: KVM: Fix TLB invalidation by IPA/VMID Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 27/30] arm64: KVM: Fix HCR setting for 32bit guests Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 28/30] arm64: KVM: Do not use pgd_index to index stage-2 pgd Greg Kroah-Hartman
2015-07-08 7:34 ` [PATCH 3.14 30/30] x86/iosf: Add Kconfig prompt for IOSF_MBI selection Greg Kroah-Hartman
2015-07-08 14:07 ` [PATCH 3.14 00/30] 3.14.48-stable review Guenter Roeck
2015-07-08 14:57 ` Sudip Mukherjee
2015-07-08 16:33 ` Shuah Khan
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