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On GICv2 and later, level triggered interrupts are pending when either
the interrupt line is asserted or the interrupt was made pending by a
GICD_ISPENDRn write. Making a level triggered interrupt pending by
software persists until either the interrupt is acknowledged or cleared
by writing GICD_ICPENDRn. As long as the interrupt line is asserted,
the interrupt is pending in any case.
This logic is transparently implemented in gic_test_pending() for
GICv1 and GICv2. The function combines the "pending" irq_state flag
(used for edge triggered interrupts and software requests) and the
line status (tracked in the "level" field). However, we also
incorrectly set the pending flag on a guest write to GICD_ISENABLERn
if the line of a level triggered interrupt was asserted. This keeps
the interrupt pending even if the line is de-asserted after some
time.
This incorrect logic is a leftover of the initial 11MPCore GIC
implementation. That handles things slightly differently to the
architected GICv1 and GICv2. The 11MPCore TRM does not give a lot of
detail on the corner cases of its GIC's behaviour, and historically
we have not wanted to investigate exactly what it does in reality, so
QEMU's GIC model takes the approach of "retain our existing behaviour
for 11MPCore, and implement the architectural standard for later GIC
revisions".
On that basis, commit 8d999995e45c10 in 2013 is where we added the
"level-triggered interrupt with the line asserted" handling to
gic_test_pending(), and we deliberately kept the old behaviour of
gic_test_pending() for REV_11MPCORE. That commit should have added
the "only if 11MPCore" condition to the setting of the pending bit on
writes to GICD_ISENABLERn, but forgot it.
Add the missing "if REV_11MPCORE" condition, so that our behaviour
on GICv1 and GICv2 matches the GIC architecture requirements.
Cc: qemu-stable@nongnu.org
Fixes: 8d999995e45c10 ("arm_gic: Fix GIC pending behavior")
Signed-off-by: Jan Klötzke <jan.kloetzke@kernkonzept.com>
Message-id: 20240911114826.3558302-1-jan.kloetzke@kernkonzept.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: expanded comment a little and converted to coding-style form;
expanded commit message with the historical backstory]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 110684c9a69a02cbabfbddcd3afa921826ad565c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Currently, the guest may write to the device configuration space,
whereas the virtio sound device specification in chapter 5.14.4
clearly states that the fields in the device configuration space
are driver-read-only.
Remove the set_config function from the virtio_snd class.
This also prevents a heap buffer overflow. See QEMU issue #2296.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2296
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20240901130112.8242-1-vr_qemu@t-online.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 7fc6611cad3e9627b23ce83e550b668abba6c886)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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fix vhost_user_gpu_chr_read() where `size` was incorrectly passed to `msg->flags`.
Fixes: 267f664658 ("hw/display: add vhost-user-vga & gpu-pci")
Signed-off-by: Haoran Zhang <wh1sper@zju.edu.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit d6192f3f7593536a4285e8ab6c6cf3f34973ce62)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Commit 9b6083465f ("virtio-snd: check for invalid param shift
operands") tries to prevent invalid parameters specified by the
guest. However, the code is not correct.
Change the code so that the parameters format and rate, which are
a bit numbers, are compared with the bit size of the data type.
Fixes: 9b6083465f ("virtio-snd: check for invalid param shift operands")
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20240802071805.7123-1-vr_qemu@t-online.de>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 7d14471a121878602cb4e748c4707f9ab9a9e3e2)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The crash was reported in MAC OS and NixOS, here is the link for this bug
https://gitlab.com/qemu-project/qemu/-/issues/2334
https://gitlab.com/qemu-project/qemu/-/issues/2321
In this bug, they are using the virtio_input device. The guest notifier was
not supported for this device, The function virtio_pci_set_guest_notifiers()
was not called, and the vector_irqfd was not initialized.
So the fix is adding the check for vector_irqfd in virtio_pci_get_notifier()
The function virtio_pci_get_notifier() can be used in various devices.
It could also be called when VIRTIO_CONFIG_S_DRIVER_OK is not set. In this situation,
the vector_irqfd being NULL is acceptable. We can allow the device continue to boot
If the vector_irqfd still hasn't been initialized after VIRTIO_CONFIG_S_DRIVER_OK
is set, it means that the function set_guest_notifiers was not called before the
driver started. This indicates that the device is not using the notifier.
At this point, we will let the check fail.
This fix is verified in vyatta,MacOS,NixOS,fedora system.
The bt tree for this bug is:
Thread 6 "CPU 0/KVM" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7c817be006c0 (LWP 1269146)]
kvm_virtio_pci_vq_vector_use () at ../qemu-9.0.0/hw/virtio/virtio-pci.c:817
817 if (irqfd->users == 0) {
(gdb) thread apply all bt
...
Thread 6 (Thread 0x7c817be006c0 (LWP 1269146) "CPU 0/KVM"):
0 kvm_virtio_pci_vq_vector_use () at ../qemu-9.0.0/hw/virtio/virtio-pci.c:817
1 kvm_virtio_pci_vector_use_one () at ../qemu-9.0.0/hw/virtio/virtio-pci.c:893
2 0x00005983657045e2 in memory_region_write_accessor () at ../qemu-9.0.0/system/memory.c:497
3 0x0000598365704ba6 in access_with_adjusted_size () at ../qemu-9.0.0/system/memory.c:573
4 0x0000598365705059 in memory_region_dispatch_write () at ../qemu-9.0.0/system/memory.c:1528
5 0x00005983659b8e1f in flatview_write_continue_step.isra.0 () at ../qemu-9.0.0/system/physmem.c:2713
6 0x000059836570ba7d in flatview_write_continue () at ../qemu-9.0.0/system/physmem.c:2743
7 flatview_write () at ../qemu-9.0.0/system/physmem.c:2774
8 0x000059836570bb76 in address_space_write () at ../qemu-9.0.0/system/physmem.c:2894
9 0x0000598365763afe in address_space_rw () at ../qemu-9.0.0/system/physmem.c:2904
10 kvm_cpu_exec () at ../qemu-9.0.0/accel/kvm/kvm-all.c:2917
11 0x000059836576656e in kvm_vcpu_thread_fn () at ../qemu-9.0.0/accel/kvm/kvm-accel-ops.c:50
12 0x0000598365926ca8 in qemu_thread_start () at ../qemu-9.0.0/util/qemu-thread-posix.c:541
13 0x00007c8185bcd1cf in ??? () at /usr/lib/libc.so.6
14 0x00007c8185c4e504 in clone () at /usr/lib/libc.so.6
Fixes: 2ce6cff94d ("virtio-pci: fix use of a released vector")
Cc: qemu-stable@nongnu.org
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20240806093715.65105-1-lulu@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit a8e63ff289d137197ad7a701a587cc432872d798)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Yutaro Shimizu from the Cyber Defense Institute discovered a bug in the
NVMe emulation that leaks contents of an uninitialized heap buffer if
subsystem and FDP emulation are enabled.
Cc: qemu-stable@nongnu.org
Reported-by: Yutaro Shimizu <shimizu@cyberdefense.jp>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
(cherry picked from commit 6a22121c4f25b181e99479f65958ecde65da1c92)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The real period is zero when both period and period_frac are zero.
Check the method ptimer_set_freq, if freq is larger than 1000 MHz,
the period is zero, but the period_frac is not, in this case, the
ptimer will work but the current code incorrectly recognizes that
the ptimer is disabled.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2306
Signed-off-by: JianZhou Yue <JianZhou.Yue@verisilicon.com>
Message-id: 3DA024AEA8B57545AF1B3CAA37077D0FB75E82C8@SHASXM03.verisilicon.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 446e5e8b4515e9a7be69ef6a29852975289bb6f0)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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We neglected to clear the @data_count index on ADMA error,
allowing to trigger assertion in sdhci_read_dataport() or
sdhci_write_dataport().
Cc: qemu-stable@nongnu.org
Fixes: d7dfca0807 ("hw/sdhci: introduce standard SD host controller")
Reported-by: Zheyu Ma <zheyuma97@gmail.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2455
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240730092138.32443-4-philmd@linaro.org>
(cherry picked from commit ed5a159c3de48a581f46de4c8c02b4b295e6c52d)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Patch 06b12970174 ("virtio-net: fix network stall under load")
added double-check to test whether the available buffer size
can satisfy the request or not, in case the guest has added
some buffers to the avail ring simultaneously after the first
check. It will be lucky if the available buffer size becomes
okay after the double-check, then the host can send the packet
to the guest. If the buffer size still can't satisfy the request,
even if the guest has added some buffers, viritio-net would
stall at the host side forever.
The patch enables notification and checks whether the guest has
added some buffers since last check of available buffers when
the available buffers are insufficient. If no buffer is added,
return false, else recheck the available buffers in the loop.
If the available buffers are sufficient, disable notification
and return true.
Changes:
1. Change the return type of virtqueue_get_avail_bytes() from void
to int, it returns an opaque that represents the shadow_avail_idx
of the virtqueue on success, else -1 on error.
2. Add a new API: virtio_queue_enable_notification_and_check(),
it takes an opaque as input arg which is returned from
virtqueue_get_avail_bytes(). It enables notification firstly,
then checks whether the guest has added some buffers since
last check of available buffers or not by virtio_queue_poll(),
return ture if yes.
The patch also reverts patch "06b12970174".
The case below can reproduce the stall.
Guest 0
+--------+
| iperf |
---------------> | server |
Host | +--------+
+--------+ | ...
| iperf |----
| client |---- Guest n
+--------+ | +--------+
| | iperf |
---------------> | server |
+--------+
Boot many guests from qemu with virtio network:
qemu ... -netdev tap,id=net_x \
-device virtio-net-pci-non-transitional,\
iommu_platform=on,mac=xx:xx:xx:xx:xx:xx,netdev=net_x
Each guest acts as iperf server with commands below:
iperf3 -s -D -i 10 -p 8001
iperf3 -s -D -i 10 -p 8002
The host as iperf client:
iperf3 -c guest_IP -p 8001 -i 30 -w 256k -P 20 -t 40000
iperf3 -c guest_IP -p 8002 -i 30 -w 256k -P 20 -t 40000
After some time, the host loses connection to the guest,
the guest can send packet to the host, but can't receive
packet from the host.
It's more likely to happen if SWIOTLB is enabled in the guest,
allocating and freeing bounce buffer takes some CPU ticks,
copying from/to bounce buffer takes more CPU ticks, compared
with that there is no bounce buffer in the guest.
Once the rate of producing packets from the host approximates
the rate of receiveing packets in the guest, the guest would
loop in NAPI.
receive packets ---
| |
v |
free buf virtnet_poll
| |
v |
add buf to avail ring ---
|
| need kick the host?
| NAPI continues
v
receive packets ---
| |
v |
free buf virtnet_poll
| |
v |
add buf to avail ring ---
|
v
... ...
On the other hand, the host fetches free buf from avail
ring, if the buf in the avail ring is not enough, the
host notifies the guest the event by writing the avail
idx read from avail ring to the event idx of used ring,
then the host goes to sleep, waiting for the kick signal
from the guest.
Once the guest finds the host is waiting for kick singal
(in virtqueue_kick_prepare_split()), it kicks the host.
The host may stall forever at the sequences below:
Host Guest
------------ -----------
fetch buf, send packet receive packet ---
... ... |
fetch buf, send packet add buf |
... add buf virtnet_poll
buf not enough avail idx-> add buf |
read avail idx add buf |
add buf ---
receive packet ---
write event idx ... |
wait for kick add buf virtnet_poll
... |
---
no more packet, exit NAPI
In the first loop of NAPI above, indicated in the range of
virtnet_poll above, the host is sending packets while the
guest is receiving packets and adding buffers.
step 1: The buf is not enough, for example, a big packet
needs 5 buf, but the available buf count is 3.
The host read current avail idx.
step 2: The guest adds some buf, then checks whether the
host is waiting for kick signal, not at this time.
The used ring is not empty, the guest continues
the second loop of NAPI.
step 3: The host writes the avail idx read from avail
ring to used ring as event idx via
virtio_queue_set_notification(q->rx_vq, 1).
step 4: At the end of the second loop of NAPI, recheck
whether kick is needed, as the event idx in the
used ring written by the host is beyound the
range of kick condition, the guest will not
send kick signal to the host.
Fixes: 06b12970174 ("virtio-net: fix network stall under load")
Cc: qemu-stable@nongnu.org
Signed-off-by: Wencheng Yang <east.moutain.yang@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit f937309fbdbb48c354220a3e7110c202ae4aa7fa)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: context fixup in include/hw/virtio/virtio.h)
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Ensure the queue index points to a valid queue when software RSS
enabled. The new calculation matches with the behavior of Linux's TAP
device with the RSS eBPF program.
Fixes: 4474e37a5b3a ("virtio-net: implement RX RSS processing")
Reported-by: Zhibin Hu <huzhibin5@huawei.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit f1595ceb9aad36a6c1da95bcb77ab9509b38822d)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Fixes: CVE-2024-6505
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The order of the RX and TX interrupts are swapped.
This commit fixes the order as per the following documents:
* https://developer.arm.com/documentation/dai0505/latest/
* https://developer.arm.com/documentation/dai0521/latest/
* https://developer.arm.com/documentation/dai0524/latest/
* https://developer.arm.com/documentation/dai0547/latest/
Cc: qemu-stable@nongnu.org
Signed-off-by: Marco Palumbi <Marco.Palumbi@tii.ae>
Message-id: 20240730073123.72992-1-marco@palumbi.it
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 5a558be93ad628e5bed6e0ee062870f49251725c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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In amdvi_update_iotlb() we will only put a new entry in the hash
table if to_cache.perm is not IOMMU_NONE. However we allocate the
memory for the new AMDVIIOTLBEntry and for the hash table key
regardless. This means that in the IOMMU_NONE case we will leak the
memory we alloacted.
Move the allocations into the if() to the point where we know we're
going to add the item to the hash table.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2452
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20240731170019.3590563-1-peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 9a45b0761628cc59267b3283a85d15294464ac31)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The documentation of the "Set palette" mailbox property at
https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface#set-palette
says it has the form:
Length: 24..1032
Value:
u32: offset: first palette index to set (0-255)
u32: length: number of palette entries to set (1-256)
u32...: RGBA palette values (offset to offset+length-1)
We get this wrong in a couple of ways:
* we aren't checking the offset and length are in range, so the guest
can make us spin for a long time by providing a large length
* the bounds check on our loop is wrong: we should iterate through
'length' palette entries, not 'length - offset' entries
Fix the loop to implement the bounds checks and get the loop
condition right. In the process, make the variables local to
this switch case, rather than function-global, so it's clearer
what type they are when reading the code.
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240723131029.1159908-2-peter.maydell@linaro.org
(cherry picked from commit 0892fffc2abaadfb5d8b79bb0250ae1794862560)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: context fix due to lack of
v9.0.0-1812-g5d5f1b60916a "hw/misc: Implement mailbox properties for customer OTP and device specific private keys"
also remove now-unused local `n' variable which gets removed in the next change in this file,
v9.0.0-2720-g32f1c201eedf "hw/misc/bcm2835_property: Avoid overflow in OTP access properties")
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When a bare-metal application on the raspi3 board reads the
AUX_MU_STAT_REG MMIO register while the device's buffer is
at full receive FIFO capacity
(i.e. `s->read_count == BCM2835_AUX_RX_FIFO_LEN`) the
assertion `assert(s->read_count < BCM2835_AUX_RX_FIFO_LEN)`
fails.
Reported-by: Cryptjar <cryptjar@junk.studio>
Suggested-by: Cryptjar <cryptjar@junk.studio>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/459
Signed-off-by: Frederik van Hövell <frederik@fvhovell.nl>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
[PMM: commit message tweaks]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 546d574b11e02bfd5b15cdf1564842c14516dfab)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Loongson IPI is only available in little-endian,
so use that to access the guest memory (in case
we run on a big-endian host).
Cc: qemu-stable@nongnu.org
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Fixes: f6783e3438 ("hw/loongarch: Add LoongArch ipi interrupt support")
[PMD: Extracted from bigger commit, added commit description]
Co-Developed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Tested-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20240718133312.10324-3-philmd@linaro.org>
(cherry picked from commit 2465c89fb983eed670007742bd68c7d91b6d6f85)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: fixups for 8.2, for lack of:
v9.0.0-583-g91d0b151de4c "hw/intc/loongson_ipi: Implement IOCSR address space for MIPS"
v9.0.0-582-gb4a12dfc2132 "hw/intc/loongarch_ipi: Rename as loongson_ipi"
v8.2.0-545-gfdd6ee0b7653 "hw/intc/loongarch_ipi: Use MemTxAttrs interface for ipi ops")
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sgx_epc_get_section assumes a PC platform is in use:
bool sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size)
{
PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
However, sgx_epc_get_section is called by CPUID regardless of whether
SGX state has been initialized or which platform is in use. Check
whether the machine has the right QOM class and if not behave as if
there are no EPC sections.
Fixes: 1dec2e1f19f ("i386: Update SGX CPUID info according to hardware/KVM/user input", 2021-09-30)
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2142
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 13be929aff804581b21e69087a9caf3698fd5c3c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The constant must be unsigned, otherwise the two's complement
overrides the other fields when a PASID is present.
Fixes: 1b2b12376c8a ("intel-iommu: PASID support")
Signed-off-by: Clément Mathieu--Drif <clement.mathieu--drif@eviden.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Minwoo Im <minwoo.im@samsung.com>
Message-Id: <20240709142557.317271-2-clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit a3c8d7e38550c3d5a46e6fa94ffadfa625a4861d)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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When setting the parameters of a PCM stream, we compute the bit flag
with the format and rate values as shift operand to check if they are
set in supported_formats and supported_rates.
If the guest provides a format/rate value which when shifting 1 results
in a value bigger than the number of bits in
supported_formats/supported_rates, we must report an error.
Previously, this ended up triggering the not reached assertions later
when converting to internal QEMU values.
Reported-by: Zheyu Ma <zheyuma97@gmail.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2416
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <virtio-snd-fuzz-2416-fix-v1-manos.pitsidianakis@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 9b6083465fb8311f2410615f8303a41f580a2a20)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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When reading input audio in the virtio-snd input callback,
virtio_snd_pcm_in_cb(), we do not check whether the iov can actually fit
the data buffer. This is because we use the buffer->size field as a
total-so-far accumulator instead of byte-size-left like in TX buffers.
This triggers an out of bounds write if the size of the virtio queue
element is equal to virtio_snd_pcm_status, which makes the available
space for audio data zero. This commit adds a check for reaching the
maximum buffer size before attempting any writes.
Reported-by: Zheyu Ma <zheyuma97@gmail.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2427
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <virtio-snd-fuzz-2427-fix-v1-manos.pitsidianakis@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 98e77e3dd8dd6e7aa9a7dffa60f49c8c8a49d4e3)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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QEMU crashes (Segmentation fault) when getting cxl-fmw property via
qmp:
(QEMU) qom-get path=machine property=cxl-fmw
This issue is caused by accessing wrong callback (opaque) type in
machine_get_cfmw().
cxl_machine_init() sets the callback as `CXLState *` type but
machine_get_cfmw() treats the callback as
`CXLFixedMemoryWindowOptionsList **`.
Fix this error by casting opaque to `CXLState *` type in
machine_get_cfmw().
Fixes: 03b39fcf64bc ("hw/cxl: Make the CXL fixed memory window setup a machine parameter.")
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Reviewed-by: Xingtao Yao <yaoxt.fnst@fujitsu.com>
Link: https://lore.kernel.org/r/20240704093404.1848132-1-zhao1.liu@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20240705113956.941732-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit a207d5f87d66f7933b50677e047498fc4af63e1f)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The allocated memory to hold LBA ranges leaks in the nvme_dsm function. This
happens because the allocated memory for iocb->range is not freed in all
error handling paths.
Fix this by adding a free to ensure that the allocated memory is properly freed.
ASAN log:
==3075137==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 480 byte(s) in 6 object(s) allocated from:
#0 0x55f1f8a0eddd in malloc llvm/compiler-rt/lib/asan/asan_malloc_linux.cpp:129:3
#1 0x7f531e0f6738 in g_malloc (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x5e738)
#2 0x55f1faf1f091 in blk_aio_get block/block-backend.c:2583:12
#3 0x55f1f945c74b in nvme_dsm hw/nvme/ctrl.c:2609:30
#4 0x55f1f945831b in nvme_io_cmd hw/nvme/ctrl.c:4470:16
#5 0x55f1f94561b7 in nvme_process_sq hw/nvme/ctrl.c:7039:29
Cc: qemu-stable@nongnu.org
Fixes: d7d1474fd85d ("hw/nvme: reimplement dsm to allow cancellation")
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
(cherry picked from commit c510fe78f1b7c966524489d6ba752107423b20c8)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The number of PIDs is in the upper 16 bits of cdw10. So we need to
right-shift by 16 bits instead of only a single bit.
Fixes: 73064edfb864 ("hw/nvme: flexible data placement emulation")
Cc: qemu-stable@nongnu.org
Signed-off-by: Vincent Fu <vincent.fu@samsung.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
(cherry picked from commit 3936bbdf9a2e9233875f850c7576c79d06add261)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Commit d152cdd6f6 ("virtio: use virtio accessor to access packed event")
switched using of address_space_read_cached() to virito_lduw_phys_cached()
to access packed descriptor event.
When we used address_space_read_cached(), we needed to call
virtio_tswap16s() to handle the endianess of the field, but
virito_lduw_phys_cached() already handles it internally, so we no longer
need to call virtio_tswap16s() (as the commit had done for `off_wrap`,
but forgot for `flags`).
Fixes: d152cdd6f6 ("virtio: use virtio accessor to access packed event")
Cc: jasowang@redhat.com
Cc: qemu-stable@nongnu.org
Reported-by: Xoykie <xoykie@gmail.com>
Link: https://lore.kernel.org/qemu-devel/CAFU8RB_pjr77zMLsM0Unf9xPNxfr_--Tjr49F_eX32ZBc5o2zQ@mail.gmail.com
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20240701075208.19634-1-sgarzare@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 7aa6492401e95fb296dec7cda81e67d91f6037d7)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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In function kvm_virtio_pci_vector_use_one(), the function will only use
the irqfd/vector for itself. Therefore, in the undo label, the failing
process is incorrect.
To fix this, we can just remove this label.
Fixes: f9a09ca3ea ("vhost: add support for configure interrupt")
Cc: qemu-stable@nongnu.org
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20240528084840.194538-1-lulu@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit a113d041e8d0b152d72a7c2bf47dd09aabf9ade2)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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In case the display surface uses a shared buffer (i.e. uses vga vram
directly instead of a shadow) go unshare the buffer before clearing it.
This avoids vga memory corruption, which in turn fixes unblanking not
working properly with X11.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2067
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20240605131444.797896-2-kraxel@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit b1cf266c82cb1211ee2785f1813a6a3f3e693390)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The VIRTIO Sound Device conforms with the Virtio spec v1.2,
thus only use little endianness.
Remove the suspicious target_words_bigendian() noticed during
code review.
Cc: qemu-stable@nongnu.org
Fixes: eb9ad377bb ("virtio-sound: handle control messages and streams")
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20240422211830.25606-1-philmd@linaro.org>
(cherry picked from commit a276ec8e2632c9015d0f9b4e47194e4e91dfa8bb)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Reproducer from https://gitlab.com/qemu-project/qemu/-/issues/1451
creates small packet (1 segment, len = 10 == n->guest_hdr_len),
then destroys queue.
"if (n->host_hdr_len != n->guest_hdr_len)" is triggered, if body creates
zero length/zero segment packet as there is nothing after guest header.
qemu_sendv_packet_async() tries to send it.
slirp discards it because it is smaller than Ethernet header,
but returns 0 because tx hooks are supposed to return total length of data.
0 is propagated upwards and is interpreted as "packet has been sent"
which is terrible because queue is being destroyed, nobody is waiting for TX
to complete and assert it triggered.
Fix is discard such empty packets instead of sending them.
Length 1 packets will go via different codepath:
virtqueue_push(q->tx_vq, elem, 0);
virtio_notify(vdev, q->tx_vq);
g_free(elem);
and aren't problematic.
Signed-off-by: Alexey Dobriyan <adobriyan@yandex-team.ru>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 2c3e4e2de699cd4d9f6c71f30a22d8f125cd6164)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Since only root APLICs can have hw IRQ lines, aplic->parent should
be initialized first.
Fixes: e8f79343cf ("hw/intc: Add RISC-V AIA APLIC device emulation")
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: yang.zhang <yang.zhang@hexintek.com>
Cc: qemu-stable <qemu-stable@nongnu.org>
Message-ID: <20240409014445.278-1-gaoshanliukou@163.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit c76b121840c6ca79dc6305a5f4bcf17c72217d9c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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In gic_cpu_read() and gic_cpu_write(), we delegate the handling of
reading and writing the Non-Secure view of the GICC_APR<n> registers
to functions gic_apr_ns_view() and gic_apr_write_ns_view().
Unfortunately we got the order of the arguments wrong, swapping the
CPU number and the register number (which the compiler doesn't catch
because they're both integers).
Most guests probably didn't notice this bug because directly
accessing the APR registers is typically something only done by
firmware when it is doing state save for going into a sleep mode.
Correct the mismatched call arguments.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Cc: qemu-stable@nongnu.org
Fixes: 51fd06e0ee ("hw/intc/arm_gic: Fix handling of GICC_APR<n>, GICC_NSAPR<n> registers")
Signed-off-by: Andrey Shumilin <shum.sdl@nppct.ru>
[PMM: Rewrote commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée<alex.bennee@linaro.org>
(cherry picked from commit daafa78b297291fea36fb4daeed526705fa7c035)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Higher bits for memory nodes were omitted at qemu_fdt_setprop_cells.
Cc: qemu-stable@nongnu.org
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240520-loongarch-fdt-memnode-v1-1-5ea9be93911e@flygoat.com>
Signed-off-by: Song Gao <gaosong@loongson.cn>
(cherry picked from commit 6204af704a071ea68d3af55c0502b112a7af9546)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The right fdt memory node like [1], not [2]
[1]
memory@0 {
device_type = "memory";
reg = <0x00 0x00 0x00 0x10000000>;
};
[2]
memory@0 {
device_type = "memory";
reg = <0x02 0x00 0x02 0x10000000>;
};
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240426091551.2397867-10-gaosong@loongson.cn>
(cherry picked from commit b11f9814526b833b3a052be2559457b1affad7f5)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Migration from an 8.2 or 9.0 binary to an 8.1 binary with machine
version 8.1 can fail with:
> kvm: Features 0x1c0010130afffa7 unsupported. Allowed features: 0x10179bfffe7
> kvm: Failed to load virtio-net:virtio
> kvm: error while loading state for instance 0x0 of device '0000:00:12.0/virtio-net'
> kvm: load of migration failed: Operation not permitted
The series
53da8b5a99 virtio-net: Add support for USO features
9da1684954 virtio-net: Add USO flags to vhost support.
f03e0cf63b tap: Add check for USO features
2ab0ec3121 tap: Add USO support to tap device.
only landed in QEMU 8.2, so the compatibility flags should be part of
machine version 8.1.
Moving the flags unfortunately breaks forward migration with machine
version 8.1 from a binary without this patch to a binary with this
patch.
Fixes: 53da8b5a99 ("virtio-net: Add support for USO features")
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
(cherry picked from commit 9710401276a0eb2fc6d467d9abea1f5e3fe2c362)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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PCI config space is little-endian, so on a big-endian host we need to
perform byte swaps for values as they are passed to and received from
the generic PCI config space access machinery.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: Mattias Nissler <mnissler@rivosinc.com>
Message-ID: <20240507094210.300566-6-mnissler@rivosinc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit e6578f1f68a0e90789a841ada532c3e494c9a04c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The char pointer 'ramName' point to a block of memory,
but never free it. Use 'g_autofree' to automatically free it.
Resolves: Coverity CID 1544773
Fixes: 0cf1478d6 ("hw/loongarch: Add numa support")
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240507022239.3113987-1-gaosong@loongson.cn>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit 54c52ec719fb8c83bbde54cb87b58688ab27c166)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: context fixup in hw/loongarch/virt.c due to missing-in-8.2
v9.0.0-266-gd771ca1c10 "hw/loongarch: Move boot functions to boot.c")
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Use little endian for derivative OTP fuse key.
Cc: qemu-stable@nongnu.org
Fixes: c752bb079b ("hw/nvram: NPCM7xx OTP device model")
Suggested-by: Avi Fishman <Avi.Fishman@nuvoton.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240422125813.1403-1-philmd@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit eb656a60fd93262b1e519b3162888bf261df7f68)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The DMA descriptor structures for this device have
a set of "address extension" fields which extend the 32
bit source addresses with an extra 16 bits to give a
48 bit address:
https://docs.amd.com/r/en-US/ug1085-zynq-ultrascale-trm/ADDR_EXT-Field
However, we misimplemented this address extension in several ways:
* we only extracted 12 bits of the extension fields, not 16
* we didn't shift the extension field up far enough
* we accidentally did the shift as 32-bit arithmetic, which
meant that we would have an overflow instead of setting
bits [47:32] of the resulting 64-bit address
Add a type cast and use extract64() instead of extract32()
to avoid integer overflow on addition. Fix bit fields
extraction according to documentation.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Cc: qemu-stable@nongnu.org
Fixes: d3c6369a96 ("introduce xlnx-dpdma")
Signed-off-by: Alexandra Diupina <adiupina@astralinux.ru>
Message-id: 20240428181131.23801-1-adiupina@astralinux.ru
[PMM: adjusted commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 4b00855f0ee2e2eee8fd2500ffef27c108be6dc3)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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It fixes the buffer overflow vulnerability in the ufs device.
The bug was detected by sanitizers.
You can reproduce it by:
cat << EOF |\
qemu-system-x86_64 \
-display none -machine accel=qtest -m 512M -M q35 -nodefaults -drive \
file=null-co://,if=none,id=disk0 -device ufs,id=ufs_bus -device \
ufs-lu,drive=disk0,bus=ufs_bus -qtest stdio
outl 0xcf8 0x80000810
outl 0xcfc 0xe0000000
outl 0xcf8 0x80000804
outw 0xcfc 0x06
write 0xe0000058 0x1 0xa7
write 0xa 0x1 0x50
EOF
Resolves: #2299
Fixes: 329f16624499 ("hw/ufs: Support for Query Transfer Requests")
Reported-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Jeuk Kim <jeuk20.kim@samsung.com>
(cherry picked from commit f2c8aeb1afefcda92054c448b21fc59cdd99db30)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Initialize the machine specific max_cpus limit as per the maximum range
of CPU IPIs available. Keeping between 4096 to 8192 will throw IRQ not
free error due to XIVE/XICS limitation and keeping beyond 8192 will hit
assert in tcg_region_init or spapr_xive_claim_irq.
Logs:
Without patch fix:
[root@host build]# qemu-system-ppc64 -accel tcg -smp 10,maxcpus=4097
qemu-system-ppc64: IRQ 4096 is not free
[root@host build]#
On LPAR:
[root@host build]# qemu-system-ppc64 -accel tcg -smp 10,maxcpus=8193
**
ERROR:../tcg/region.c:774:tcg_region_init: assertion failed:
(region_size >= 2 * page_size)
Bail out! ERROR:../tcg/region.c:774:tcg_region_init: assertion failed:
(region_size >= 2 * page_size)
Aborted (core dumped)
[root@host build]#
On x86:
[root@host build]# qemu-system-ppc64 -accel tcg -smp 10,maxcpus=8193
qemu-system-ppc64: ../hw/intc/spapr_xive.c:596: spapr_xive_claim_irq:
Assertion `lisn < xive->nr_irqs' failed.
Aborted (core dumped)
[root@host build]#
With patch fix:
[root@host build]# qemu-system-ppc64 -accel tcg -smp 10,maxcpus=4097
qemu-system-ppc64: Invalid SMP CPUs 4097. The max CPUs supported by
machine 'pseries-8.2' is 4096
[root@host build]#
Reported-by: Kowshik Jois <kowsjois@linux.ibm.com>
Tested-by: Kowshik Jois <kowsjois@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
(cherry picked from commit c4f91d7b7be76c47015521ab0109c6e998a369b0)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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spapr_irq_init currently uses existing macro SPAPR_XIRQ_BASE to refer to
the range of CPU IPIs during initialization of nr-irqs property.
It is more appropriate to have its own define which can be further
reused as appropriate for correct interpretation.
Suggested-by: Cedric Le Goater <clg@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Kowshik Jois <kowsjois@linux.ibm.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
(cherry picked from commit 2df5c1f5b014126595a26c6797089d284a3b211c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Real 460EX SoC apparently does not expose a bridge device and having
it appear on PCI bus confuses an AmigaOS file system driver that uses
this to detect which machine it is running on.
Cc: qemu-stable@nongnu.org
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240411192443.B4D644E6026@zero.eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit 6e4aceba2079e3df42edc89d44f4ee02343bb09e)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Move calculation of mask after the switch which sets the function
number for PIRQ/PINT pins to make sure the state of these pins are
kept track of separately and IRQ is raised if any of them is active.
Cc: qemu-stable@nongnu.org
Fixes: 7e01bd80c1 hw/isa/vt82c686: Bring back via_isa_set_irq()
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240410222543.0EA534E6005@zero.eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit f33274265a242df5d9fdb00915fe72fbb1b2a3c4)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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During the booting process of the non-standard image, the behavior of the
called function in qemu is as follows:
1. vhost_net_stop() was triggered by guest image. This will call the function
virtio_pci_set_guest_notifiers() with assgin= false,
virtio_pci_set_guest_notifiers() will release the irqfd for vector 0
2. virtio_reset() was triggered, this will set configure vector to VIRTIO_NO_VECTOR
3.vhost_net_start() was called (at this time, the configure vector is
still VIRTIO_NO_VECTOR) and then call virtio_pci_set_guest_notifiers() with
assgin=true, so the irqfd for vector 0 is still not "init" during this process
4. The system continues to boot and sets the vector back to 0. After that
msix_fire_vector_notifier() was triggered to unmask the vector 0 and meet the crash
To fix the issue, we need to support changing the vector after VIRTIO_CONFIG_S_DRIVER_OK is set.
(gdb) bt
0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0)
at pthread_kill.c:44
1 0x00007fc87148ec53 in __pthread_kill_internal (signo=6, threadid=<optimized out>) at pthread_kill.c:78
2 0x00007fc87143e956 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
3 0x00007fc8714287f4 in __GI_abort () at abort.c:79
4 0x00007fc87142871b in __assert_fail_base
(fmt=0x7fc8715bbde0 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x5606413efd53 "ret == 0", file=0x5606413ef87d "../accel/kvm/kvm-all.c", line=1837, function=<optimized out>) at assert.c:92
5 0x00007fc871437536 in __GI___assert_fail
(assertion=0x5606413efd53 "ret == 0", file=0x5606413ef87d "../accel/kvm/kvm-all.c", line=1837, function=0x5606413f06f0 <__PRETTY_FUNCTION__.19> "kvm_irqchip_commit_routes") at assert.c:101
6 0x0000560640f884b5 in kvm_irqchip_commit_routes (s=0x560642cae1f0) at ../accel/kvm/kvm-all.c:1837
7 0x0000560640c98f8e in virtio_pci_one_vector_unmask
(proxy=0x560643c65f00, queue_no=4294967295, vector=0, msg=..., n=0x560643c6e4c8)
at ../hw/virtio/virtio-pci.c:1005
8 0x0000560640c99201 in virtio_pci_vector_unmask (dev=0x560643c65f00, vector=0, msg=...)
at ../hw/virtio/virtio-pci.c:1070
9 0x0000560640bc402e in msix_fire_vector_notifier (dev=0x560643c65f00, vector=0, is_masked=false)
at ../hw/pci/msix.c:120
10 0x0000560640bc40f1 in msix_handle_mask_update (dev=0x560643c65f00, vector=0, was_masked=true)
at ../hw/pci/msix.c:140
11 0x0000560640bc4503 in msix_table_mmio_write (opaque=0x560643c65f00, addr=12, val=0, size=4)
at ../hw/pci/msix.c:231
12 0x0000560640f26d83 in memory_region_write_accessor
(mr=0x560643c66540, addr=12, value=0x7fc86b7bc628, size=4, shift=0, mask=4294967295, attrs=...)
at ../system/memory.c:497
13 0x0000560640f270a6 in access_with_adjusted_size
(addr=12, value=0x7fc86b7bc628, size=4, access_size_min=1, access_size_max=4, access_fn=0x560640f26c8d <memory_region_write_accessor>, mr=0x560643c66540, attrs=...) at ../system/memory.c:573
14 0x0000560640f2a2b5 in memory_region_dispatch_write (mr=0x560643c66540, addr=12, data=0, op=MO_32, attrs=...)
at ../system/memory.c:1521
15 0x0000560640f37bac in flatview_write_continue
(fv=0x7fc65805e0b0, addr=4273803276, attrs=..., ptr=0x7fc871e9c028, len=4, addr1=12, l=4, mr=0x560643c66540)
at ../system/physmem.c:2714
16 0x0000560640f37d0f in flatview_write
(fv=0x7fc65805e0b0, addr=4273803276, attrs=..., buf=0x7fc871e9c028, len=4) at ../system/physmem.c:2756
17 0x0000560640f380bf in address_space_write
(as=0x560642161ae0 <address_space_memory>, addr=4273803276, attrs=..., buf=0x7fc871e9c028, len=4)
at ../system/physmem.c:2863
18 0x0000560640f3812c in address_space_rw
(as=0x560642161ae0 <address_space_memory>, addr=4273803276, attrs=..., buf=0x7fc871e9c028, len=4, is_write=true) at ../system/physmem.c:2873
--Type <RET> for more, q to quit, c to continue without paging--
19 0x0000560640f8aa55 in kvm_cpu_exec (cpu=0x560642f205e0) at ../accel/kvm/kvm-all.c:2915
20 0x0000560640f8d731 in kvm_vcpu_thread_fn (arg=0x560642f205e0) at ../accel/kvm/kvm-accel-ops.c:51
21 0x00005606411949f4 in qemu_thread_start (args=0x560642f292b0) at ../util/qemu-thread-posix.c:541
22 0x00007fc87148cdcd in start_thread (arg=<optimized out>) at pthread_create.c:442
23 0x00007fc871512630 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
(gdb)
MST: coding style and typo fixups
Fixes: f9a09ca3ea ("vhost: add support for configure interrupt")
Cc: qemu-stable@nongnu.org
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-ID: <2321ade5f601367efe7380c04e3f61379c59b48f.1713173550.git.mst@redhat.com>
Cc: Lei Yang <leiyang@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Cindy Lu <lulu@redhat.com>
(cherry picked from commit 2ce6cff94df2650c460f809e5ad263f1d22507c0)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Coverity reported:
>>> CID 1542933: Code maintainability issues (UNUSED_VALUE)
>>> CID 1542934: Code maintainability issues (UNUSED_VALUE)
>>> Assigning value "NULL" to "stream" here, but that stored
value is overwritten before it can be used.
Simply remove the unused assignments.
Resolves: Coverity CID 1542933
Resolves: Coverity CID 1542934
Fixes: 731655f87f ("virtio-snd: rewrite invalid tx/rx message handling")
Fixes: 20cd0c8655 ("virtio-snd: rewrite invalid tx/rx message handling" in stable-8.2)
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20240410053712.34747-1-philmd@linaro.org>
(cherry picked from commit dcb0a1ac03d6b5ba6c7fcbe467f0215738006113)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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If a fragmented packet size is too short, do not try to
calculate its checksum.
Reproduced using:
$ cat << EOF | qemu-system-i386 -display none -nodefaults \
-machine q35,accel=qtest -m 32M \
-device igb,netdev=net0 \
-netdev user,id=net0 \
-qtest stdio
outl 0xcf8 0x80000810
outl 0xcfc 0xe0000000
outl 0xcf8 0x80000804
outw 0xcfc 0x06
write 0xe0000403 0x1 0x02
writel 0xe0003808 0xffffffff
write 0xe000381a 0x1 0x5b
write 0xe000381b 0x1 0x00
EOF
Assertion failed: (offset == 0), function iov_from_buf_full, file util/iov.c, line 39.
#1 0x5575e81e952a in iov_from_buf_full qemu/util/iov.c:39:5
#2 0x5575e6500768 in net_tx_pkt_update_sctp_checksum qemu/hw/net/net_tx_pkt.c:144:9
#3 0x5575e659f3e1 in igb_setup_tx_offloads qemu/hw/net/igb_core.c:478:11
#4 0x5575e659f3e1 in igb_tx_pkt_send qemu/hw/net/igb_core.c:552:10
#5 0x5575e659f3e1 in igb_process_tx_desc qemu/hw/net/igb_core.c:671:17
#6 0x5575e659f3e1 in igb_start_xmit qemu/hw/net/igb_core.c:903:9
#7 0x5575e659f3e1 in igb_set_tdt qemu/hw/net/igb_core.c:2812:5
#8 0x5575e657d6a4 in igb_core_write qemu/hw/net/igb_core.c:4248:9
Fixes: CVE-2024-3567
Cc: qemu-stable@nongnu.org
Reported-by: Zheyu Ma <zheyuma97@gmail.com>
Fixes: f199b13bc1 ("igb: Implement Tx SCTP CSO")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2273
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20240410070459.49112-1-philmd@linaro.org>
(cherry picked from commit 83ddb3dbba2ee0f1767442ae6ee665058aeb1093)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Per "SD Host Controller Standard Specification Version 3.00":
* 2.2.5 Transfer Mode Register (Offset 00Ch)
Writes to this register shall be ignored when the Command
Inhibit (DAT) in the Present State register is 1.
Do not update the TRNMOD register when Command Inhibit (DAT)
bit is set to avoid the present-status register going out of
sync, leading to malicious guest using DMA mode and overflowing
the FIFO buffer:
$ cat << EOF | qemu-system-i386 \
-display none -nographic -nodefaults \
-machine accel=qtest -m 512M \
-device sdhci-pci,sd-spec-version=3 \
-device sd-card,drive=mydrive \
-drive if=none,index=0,file=null-co://,format=raw,id=mydrive \
-qtest stdio
outl 0xcf8 0x80001013
outl 0xcfc 0x91
outl 0xcf8 0x80001001
outl 0xcfc 0x06000000
write 0x9100002c 0x1 0x05
write 0x91000058 0x1 0x16
write 0x91000005 0x1 0x04
write 0x91000028 0x1 0x08
write 0x16 0x1 0x21
write 0x19 0x1 0x20
write 0x9100000c 0x1 0x01
write 0x9100000e 0x1 0x20
write 0x9100000f 0x1 0x00
write 0x9100000c 0x1 0x00
write 0x91000020 0x1 0x00
EOF
Stack trace (part):
=================================================================
==89993==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x615000029900 at pc 0x55d5f885700d bp 0x7ffc1e1e9470 sp 0x7ffc1e1e9468
WRITE of size 1 at 0x615000029900 thread T0
#0 0x55d5f885700c in sdhci_write_dataport hw/sd/sdhci.c:564:39
#1 0x55d5f8849150 in sdhci_write hw/sd/sdhci.c:1223:13
#2 0x55d5fa01db63 in memory_region_write_accessor system/memory.c:497:5
#3 0x55d5fa01d245 in access_with_adjusted_size system/memory.c:573:18
#4 0x55d5fa01b1a9 in memory_region_dispatch_write system/memory.c:1521:16
#5 0x55d5fa09f5c9 in flatview_write_continue system/physmem.c:2711:23
#6 0x55d5fa08f78b in flatview_write system/physmem.c:2753:12
#7 0x55d5fa08f258 in address_space_write system/physmem.c:2860:18
...
0x615000029900 is located 0 bytes to the right of 512-byte region
[0x615000029700,0x615000029900) allocated by thread T0 here:
#0 0x55d5f7237b27 in __interceptor_calloc
#1 0x7f9e36dd4c50 in g_malloc0
#2 0x55d5f88672f7 in sdhci_pci_realize hw/sd/sdhci-pci.c:36:5
#3 0x55d5f844b582 in pci_qdev_realize hw/pci/pci.c:2092:9
#4 0x55d5fa2ee74b in device_set_realized hw/core/qdev.c:510:13
#5 0x55d5fa325bfb in property_set_bool qom/object.c:2358:5
#6 0x55d5fa31ea45 in object_property_set qom/object.c:1472:5
#7 0x55d5fa332509 in object_property_set_qobject om/qom-qobject.c:28:10
#8 0x55d5fa31f6ed in object_property_set_bool qom/object.c:1541:15
#9 0x55d5fa2e2948 in qdev_realize hw/core/qdev.c:292:12
#10 0x55d5f8eed3f1 in qdev_device_add_from_qdict system/qdev-monitor.c:719:10
#11 0x55d5f8eef7ff in qdev_device_add system/qdev-monitor.c:738:11
#12 0x55d5f8f211f0 in device_init_func system/vl.c:1200:11
#13 0x55d5fad0877d in qemu_opts_foreach util/qemu-option.c:1135:14
#14 0x55d5f8f0df9c in qemu_create_cli_devices system/vl.c:2638:5
#15 0x55d5f8f0db24 in qmp_x_exit_preconfig system/vl.c:2706:5
#16 0x55d5f8f14dc0 in qemu_init system/vl.c:3737:9
...
SUMMARY: AddressSanitizer: heap-buffer-overflow hw/sd/sdhci.c:564:39
in sdhci_write_dataport
Add assertions to ensure the fifo_buffer[] is not overflowed by
malicious accesses to the Buffer Data Port register.
Fixes: CVE-2024-3447
Cc: qemu-stable@nongnu.org
Fixes: d7dfca0807 ("hw/sdhci: introduce standard SD host controller")
Buglink: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58813
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Reported-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <CAFEAcA9iLiv1XGTGKeopgMa8Y9+8kvptvsb8z2OBeuy+5=NUfg@mail.gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240409145524.27913-1-philmd@linaro.org>
(cherry picked from commit 9e4b27ca6bf4974f169bbca7f3dca117b1208b6f)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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When the MAC Interface Layer (MIL) transmit FIFO is full,
truncate the packet, and raise the Transmitter Error (TXE)
flag.
Broken since model introduction in commit 2a42499017
("LAN9118 emulation").
When using the reproducer from
https://gitlab.com/qemu-project/qemu/-/issues/2267 we get:
hw/net/lan9118.c:798:17: runtime error:
index 2048 out of bounds for type 'uint8_t[2048]' (aka 'unsigned char[2048]')
#0 0x563ec9a057b1 in tx_fifo_push hw/net/lan9118.c:798:43
#1 0x563ec99fbb28 in lan9118_writel hw/net/lan9118.c:1042:9
#2 0x563ec99f2de2 in lan9118_16bit_mode_write hw/net/lan9118.c:1205:9
#3 0x563ecbf78013 in memory_region_write_accessor system/memory.c:497:5
#4 0x563ecbf776f5 in access_with_adjusted_size system/memory.c:573:18
#5 0x563ecbf75643 in memory_region_dispatch_write system/memory.c:1521:16
#6 0x563ecc01bade in flatview_write_continue_step system/physmem.c:2713:18
#7 0x563ecc01b374 in flatview_write_continue system/physmem.c:2743:19
#8 0x563ecbff1c9b in flatview_write system/physmem.c:2774:12
#9 0x563ecbff1768 in address_space_write system/physmem.c:2894:18
...
[*] LAN9118 DS00002266B.pdf, Table 5.3.3 "INTERRUPT STATUS REGISTER"
Cc: qemu-stable@nongnu.org
Reported-by: Will Lester
Reported-by: Chuhong Yuan <hslester96@gmail.com>
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2267
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20240409133801.23503-3-philmd@linaro.org>
(cherry picked from commit ad766d603f39888309cfb1433ba2de1d0e9e4f58)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The magic 2048 is explained in the LAN9211 datasheet (DS00002414A)
in chapter 1.4, "10/100 Ethernet MAC":
The MAC Interface Layer (MIL), within the MAC, contains a
2K Byte transmit and a 128 Byte receive FIFO which is separate
from the TX and RX FIFOs. [...]
Note, the use of the constant in lan9118_receive() reveals that
our implementation is using the same buffer for both tx and rx.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20240409133801.23503-2-philmd@linaro.org>
(cherry picked from commit a45223467e4e185fff1c76a6483784fa379ded77)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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AppleSMCData is allocated with g_new0() in applesmc_add_key():
release it with g_free().
Leaked since commit 1ddda5cd36 ("AppleSMC device emulation").
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2272
Reported-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20240408095217.57239-3-philmd@linaro.org>
(cherry picked from commit fc09ff2979defdcf8d00c2db94022d5d610e36ba)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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nand_command() and nand_getio() don't check @offset points
into the block, nor the available data length (s->iolen) is
not negative.
In order to fix:
- check the offset is in range in nand_blk_load_NAND_PAGE_SIZE(),
- do not set @iolen if blk_load() failed.
Reproducer:
$ cat << EOF | qemu-system-arm -machine tosa \
-monitor none -serial none \
-display none -qtest stdio
write 0x10000111 0x1 0xca
write 0x10000104 0x1 0x47
write 0x1000ca04 0x1 0xd7
write 0x1000ca01 0x1 0xe0
write 0x1000ca04 0x1 0x71
write 0x1000ca00 0x1 0x50
write 0x1000ca04 0x1 0xd7
read 0x1000ca02 0x1
write 0x1000ca01 0x1 0x10
EOF
=================================================================
==15750==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61f000000de0
at pc 0x560e61557210 bp 0x7ffcfc4a59f0 sp 0x7ffcfc4a59e8
READ of size 1 at 0x61f000000de0 thread T0
#0 0x560e6155720f in mem_and hw/block/nand.c:101:20
#1 0x560e6155ac9c in nand_blk_write_512 hw/block/nand.c:663:9
#2 0x560e61544200 in nand_command hw/block/nand.c:293:13
#3 0x560e6153cc83 in nand_setio hw/block/nand.c:520:13
#4 0x560e61a0a69e in tc6393xb_nand_writeb hw/display/tc6393xb.c:380:13
#5 0x560e619f9bf7 in tc6393xb_writeb hw/display/tc6393xb.c:524:9
#6 0x560e647c7d03 in memory_region_write_accessor softmmu/memory.c:492:5
#7 0x560e647c7641 in access_with_adjusted_size softmmu/memory.c:554:18
#8 0x560e647c5f66 in memory_region_dispatch_write softmmu/memory.c:1514:16
#9 0x560e6485409e in flatview_write_continue softmmu/physmem.c:2825:23
#10 0x560e648421eb in flatview_write softmmu/physmem.c:2867:12
#11 0x560e64841ca8 in address_space_write softmmu/physmem.c:2963:18
#12 0x560e61170162 in qemu_writeb tests/qtest/videzzo/videzzo_qemu.c:1080:5
#13 0x560e6116eef7 in dispatch_mmio_write tests/qtest/videzzo/videzzo_qemu.c:1227:28
0x61f000000de0 is located 0 bytes to the right of 3424-byte region [0x61f000000080,0x61f000000de0)
allocated by thread T0 here:
#0 0x560e611276cf in malloc /root/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3
#1 0x7f7959a87e98 in g_malloc (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x57e98)
#2 0x560e64b98871 in object_new qom/object.c:749:12
#3 0x560e64b5d1a1 in qdev_new hw/core/qdev.c:153:19
#4 0x560e61547ea5 in nand_init hw/block/nand.c:639:11
#5 0x560e619f8772 in tc6393xb_init hw/display/tc6393xb.c:558:16
#6 0x560e6390bad2 in tosa_init hw/arm/tosa.c:250:12
SUMMARY: AddressSanitizer: heap-buffer-overflow hw/block/nand.c:101:20 in mem_and
==15750==ABORTING
Broken since introduction in commit 3e3d5815cb ("NAND Flash memory
emulation and ECC calculation helpers for use by NAND controllers").
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1445
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1446
Reported-by: Qiang Liu <cyruscyliu@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240409135944.24997-4-philmd@linaro.org>
(cherry picked from commit d39fdfff348fdf00173b7a58e935328a64db7d28)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Negative offset is meaningless, use unsigned type.
Return a boolean value indicating success.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240409135944.24997-3-philmd@linaro.org>
(cherry picked from commit 2e3e09b368001f7eaeeca7a9b49cb1f0c9092d85)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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