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4dc06bb816
qemu/hw
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David Hoppenbrouwers 4dc06bb816 hw/intc/sifive_clint: Fix muldiv64 overflow in sifive_clint_write_timecmp() 
`muldiv64` would overflow in cases where the final 96-bit value does not
fit in a `uint64_t`. This would result in small values that cause an
interrupt to be triggered much sooner than intended.

The overflow can be detected in most cases by checking if the new value is
smaller than the previous value. If the final result is larger than
`diff` it is either correct or it doesn't matter as it is effectively
infinite anyways.

`next` is an `uint64_t` value, but `timer_mod` takes an `int64_t`. This
resulted in high values such as `UINT64_MAX` being converted to `-1`,
which caused an immediate timer interrupt.

By limiting `next` to `INT64_MAX` no overflow will happen while the
timer will still be effectively set to "infinitely" far in the future.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/493
Signed-off-by: David Hoppenbrouwers <david@salt-inc.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210827152324.5201-1-david@salt-inc.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-09-01 11:59:12 +10:00
..
9pfs 9pfs: reduce latency of Twalk 2021-07-05 13:03:16 +02:00
acpi hw/acpi/Kconfig: Add missing Kconfig dependencies (build error) 2021-07-20 15:29:27 +02:00
adc adc: Move the max111x driver to the adc directory 2021-06-17 07:10:32 -05:00
alpha hw/alpha: Provide a PCI-ISA bridge device node 2021-06-28 07:27:32 -07:00
arm hw/arm/xlnx-zynqmp: Add unimplemented APU mmio 2021-08-26 17:02:01 +01:00
audio hw/audio/adlib: Remove unused variable in adlib_callback 2021-07-26 07:07:07 -10:00
avr hw/avr/atmega.c: use the avr51 cpu for atmega1280 2021-05-13 19:11:42 +02:00
block pc,pci,virtio: bugfixes, improvements 2021-07-09 14:30:01 +01:00
char hw/char: Add config for shakti uart 2021-09-01 11:59:12 +10:00
core hw/core/loader: In gunzip(), check index is in range before use, not after 2021-08-26 17:02:00 +01:00
cpu cpu/core: Fix "help" of CPU core device types 2021-04-09 16:05:16 -04:00
cris Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
display hw/display: fix virgl reset regression 2021-07-22 15:46:54 +02:00
dma hw/dma/xlnx-zdma Always expect 'dma' link property to be set 2021-08-26 17:01:59 +01:00
gpio hw: aspeed_gpio: Fix memory size 2021-07-27 11:00:00 +01:00
hppa docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
hyperv vmbus: Don't make QOM property registration conditional 2021-07-06 18:04:38 -04:00
i2c i2c/smbus_eeprom: Add feature bit to SPD data 2021-07-29 10:59:49 +10:00
i386 Error reporting patches for 2021-08-26 2021-08-27 09:57:28 +01:00
ide hw/ide/Kconfig: Add missing dependency PCI -> IDE_QDEV 2021-07-20 15:30:42 +02:00
input Some qemu updates for IPMI and I2C 2021-07-11 14:32:49 +01:00
intc hw/intc/sifive_clint: Fix muldiv64 overflow in sifive_clint_write_timecmp() 2021-09-01 11:59:12 +10:00
ipack Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ipmi ipmi/sim: fix watchdog_expired data type error in IPMIBmcSim struct 2021-07-08 14:15:01 -05:00
isa hw/isa/vt82c686: Add missing Kconfig dependency (runtime error) 2021-07-20 20:10:20 +02:00
m68k bitops.h: revert db1ffc32dd ("qemu/bitops.h: add bitrev8 implementation") 2021-07-26 06:56:41 -10:00
mem docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
microblaze Do not include sysemu/sysemu.h if it's not really necessary 2021-05-02 17:24:50 +02:00
mips arch_init.h: Don't include arch_init.h unnecessarily 2021-08-26 17:02:00 +01:00
misc Some qemu updates for IPMI and I2C 2021-07-11 14:32:49 +01:00
net hw/net: e1000e: Don't zero out the VLAN tag in the legacy RX descriptor 2021-08-02 12:19:18 +08:00
nios2 Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
nubus hw: Do not include hw/sysbus.h if it is not necessary 2021-05-02 17:24:50 +02:00
nvme hw/nvme: fix missing variable initializers 2021-08-09 12:52:16 +02:00
nvram docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
openrisc Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
pci hw/pci: Add pci_bus_range() to get PCI bus number range 2021-07-16 11:10:45 -04:00
pci-bridge hw/pcie-root-port: Fix hotplug for PCI devices requiring IO 2021-08-03 16:31:07 -04:00
pci-host Revert "acpi/gpex: Inform os to keep firmware resource map" 2021-08-03 16:32:34 -04:00
pcmcia hw/pcmcia: Do not register PCMCIA type if not required 2021-05-02 17:24:50 +02:00
ppc ppc patch queue 2021-08-27 2021-08-27 11:34:12 +01:00
rdma pvrdma: Fix the ring init error flow (CVE-2021-3608) 2021-07-04 22:47:51 +03:00
remote Remove superfluous ERRP_GUARD() 2021-08-26 17:15:28 +02:00
riscv hw/riscv/virt.c: Assemble plic_hart_config string with g_strjoinv() 2021-09-01 11:59:12 +10:00
rtc docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
rx hw/rx/rx-gdbsim: Do not accept invalid memory size 2021-05-03 10:07:41 +02:00
s390x error: Use error_fatal to simplify obvious fatal errors (again) 2021-08-26 17:15:28 +02:00
scsi vhost-scsi: Plug memory leak on migrate_add_blocker() failure 2021-08-26 17:15:28 +02:00
sd hw/sd/sdcard: Fix assertion accessing out-of-range addresses with CMD30 2021-08-03 19:34:51 +02:00
sensor hw/misc: add MAX34451 device 2021-07-08 14:42:00 -05:00
sh4 Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
smbios hw/smbios: support for type 41 (onboard devices extended information) 2021-05-14 10:26:18 -04:00
sparc hw/block/fdc: Extract SysBus floppy controllers to fdc-sysbus.c 2021-06-25 08:53:28 -04:00
sparc64 hw/block/fdc: Extract ISA floppy controllers to fdc-isa.c 2021-06-25 08:53:28 -04:00
ssi Trivial patches pull request 20210503 2021-05-05 13:52:00 +01:00
timer hw/timer: Initial commit of Ibex Timer 2021-06-24 05:00:12 -07:00
tpm docs: fix references to docs/specs/tpm.rst 2021-06-02 06:51:09 +02:00
tricore hw/tricore: fix inclusion of tricore_testboard 2021-07-20 20:10:21 +02:00
usb chardev: mark explicitly first argument as poisoned 2021-08-05 16:15:33 +04:00
vfio vfio: Avoid error_propagate() after migrate_add_blocker() 2021-08-26 17:15:28 +02:00
virtio vhost: Clean up how VhostOpts method vhost_backend_init() fails 2021-08-26 17:15:28 +02:00
watchdog docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
xen docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
xenpv meson: convert hw/arch* 2020-08-21 06:30:33 -04:00
xtensa Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
Kconfig sensor: Move hardware sensors from misc to a sensor directory 2021-06-17 07:10:32 -05:00
meson.build sensor: Move hardware sensors from misc to a sensor directory 2021-06-17 07:10:32 -05:00