From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
AKASHI Takahiro <takahiro.akashi@linaro.org>,
Christoffer Dall <christoffer.dall@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>
Subject: [PATCH 4.9 21/27] KVM: arm/arm64: vgic-its: Preserve the revious read from the pending table
Date: Fri, 15 Dec 2017 10:52:04 +0100 [thread overview]
Message-ID: <20171215092259.012907057@linuxfoundation.org> (raw)
In-Reply-To: <20171215092257.674368056@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marc Zyngier <marc.zyngier@arm.com>
commit 64afe6e9eb4841f35317da4393de21a047a883b3 upstream.
The current pending table parsing code assumes that we keep the
previous read of the pending bits, but keep that variable in
the current block, making sure it is discarded on each loop.
We end-up using whatever is on the stack. Who knows, it might
just be the right thing...
Fixes: 33d3bc9556a7d ("KVM: arm64: vgic-its: Read initial LPI pending table")
Cc: stable@vger.kernel.org # 4.8
Reported-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
virt/kvm/arm/vgic/vgic-its.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -322,6 +322,7 @@ static int its_sync_lpi_pending_table(st
int ret = 0;
u32 *intids;
int nr_irqs, i;
+ u8 pendmask;
nr_irqs = vgic_copy_lpi_list(vcpu->kvm, &intids);
if (nr_irqs < 0)
@@ -329,7 +330,6 @@ static int its_sync_lpi_pending_table(st
for (i = 0; i < nr_irqs; i++) {
int byte_offset, bit_nr;
- u8 pendmask;
byte_offset = intids[i] / BITS_PER_BYTE;
bit_nr = intids[i] % BITS_PER_BYTE;
next prev parent reply other threads:[~2017-12-15 9:52 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-15 9:51 [PATCH 4.9 00/27] 4.9.70-stable review Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 02/27] s390/qeth: fix early exit from error path Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 03/27] tipc: fix memory leak in tipc_accept_from_sock() Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 05/27] sit: update frag_off info Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 06/27] packet: fix crash in fanout_demux_rollover() Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 07/27] net/packet: fix a race in packet_bind() and packet_notifier() Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 10/27] stmmac: reset last TSO segment size after device open Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 12/27] s390/qeth: build max size GSO skbs on L2 devices Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 13/27] s390/qeth: fix GSO throughput regression Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 14/27] s390/qeth: fix thinko in IPv4 multicast address tracking Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 15/27] tipc: call tipc_rcv() only if bearer is up in tipc_udp_recv() Greg Kroah-Hartman
2017-12-15 9:51 ` [PATCH 4.9 16/27] Fix handling of verdicts after NF_QUEUE Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 17/27] ipmi: Stop timers before cleaning up the module Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 18/27] s390: always save and restore all registers on context switch Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 19/27] usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 20/27] fix kcm_clone() Greg Kroah-Hartman
2017-12-15 9:52 ` Greg Kroah-Hartman [this message]
2017-12-15 9:52 ` [PATCH 4.9 22/27] powerpc/64: Fix checksum folding in csum_tcpudp_nofold and ip_fast_csum_nofold Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 23/27] kbuild: do not call cc-option before KBUILD_CFLAGS initialization Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 24/27] ipvlan: fix ipv6 outbound device Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 25/27] audit: ensure that audit=1 actually enables audit for PID 1 Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 26/27] md: free unused memory after bitmap resize Greg Kroah-Hartman
2017-12-15 9:52 ` [PATCH 4.9 27/27] RDMA/cxgb4: Annotate r2 and stag as __be32 Greg Kroah-Hartman
2017-12-15 17:40 ` [PATCH 4.9 00/27] 4.9.70-stable review Guenter Roeck
2017-12-15 21:12 ` Shuah Khan
2017-12-16 5:55 ` Naresh Kamboju
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