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| author | Heyi Guo <guoheyi@huawei.com> | 2019-08-27 12:26:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-06 10:22:22 +0200 |
| commit | ab8ecc278dc8f6a63bd7a34387c65c600b2ab77a (patch) | |
| tree | ada005ad7a71f05418ecac875ef991650466a312 /fs/cifs/nterr.h | |
| parent | db1841a2dd4c84f390c3e0ed15d6a4ea601433e9 (diff) | |
| download | linux-stable-ab8ecc278dc8f6a63bd7a34387c65c600b2ab77a.tar.gz linux-stable-ab8ecc278dc8f6a63bd7a34387c65c600b2ab77a.tar.bz2 linux-stable-ab8ecc278dc8f6a63bd7a34387c65c600b2ab77a.zip | |
KVM: arm/arm64: vgic: Fix potential deadlock when ap_list is long
[ Upstream commit d4a8061a7c5f7c27a2dc002ee4cb89b3e6637e44 ]
If the ap_list is longer than 256 entries, merge_final() in list_sort()
will call the comparison callback with the same element twice, causing
a deadlock in vgic_irq_cmp().
Fix it by returning early when irqa == irqb.
Cc: stable@vger.kernel.org # 4.7+
Fixes: 8e4447457965 ("KVM: arm/arm64: vgic-new: Add IRQ sorting")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Heyi Guo <guoheyi@huawei.com>
[maz: massaged commit log and patch, added Fixes and Cc-stable]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/cifs/nterr.h')
0 files changed, 0 insertions, 0 deletions