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| author | Zenghui Yu <yuzenghui@huawei.com> | 2020-04-14 11:03:48 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 13:14:42 +0200 |
| commit | 7c451f583f547536854e9647fa9582e698bc111c (patch) | |
| tree | 582ed75c502d7c905474aacbb0654188f6d11c18 /virt/kvm | |
| parent | 82be3d65f4198d3958bd54de1cba193368a4b1a2 (diff) | |
| download | linux-stable-7c451f583f547536854e9647fa9582e698bc111c.tar.gz linux-stable-7c451f583f547536854e9647fa9582e698bc111c.tar.bz2 linux-stable-7c451f583f547536854e9647fa9582e698bc111c.zip | |
KVM: arm64: vgic-its: Fix memory leak on the error path of vgic_add_lpi()
[ Upstream commit 57bdb436ce869a45881d8aa4bc5dac8e072dd2b6 ]
If we're going to fail out the vgic_add_lpi(), let's make sure the
allocated vgic_irq memory is also freed. Though it seems that both
cases are unlikely to fail.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200414030349.625-3-yuzenghui@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-its.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 9295addea7ec..f139b1c62ca3 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -107,14 +107,21 @@ out_unlock: * We "cache" the configuration table entries in our struct vgic_irq's. * However we only have those structs for mapped IRQs, so we read in * the respective config data from memory here upon mapping the LPI. + * + * Should any of these fail, behave as if we couldn't create the LPI + * by dropping the refcount and returning the error. */ ret = update_lpi_config(kvm, irq, NULL, false); - if (ret) + if (ret) { + vgic_put_irq(kvm, irq); return ERR_PTR(ret); + } ret = vgic_v3_lpi_sync_pending_status(kvm, irq); - if (ret) + if (ret) { + vgic_put_irq(kvm, irq); return ERR_PTR(ret); + } return irq; } |