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qemu-irix/hw
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Maxime Coquelin 0bc76c8d08 vhost: restore avail index from vring used index on disconnection 
vhost_virtqueue_stop() gets avail index value from the backend,
except if the backend is not responding.

It happens when the backend crashes, and in this case, internal
state of the virtio queue is inconsistent, making packets
to corrupt the vring state.

With a Linux guest, it results in following error message on
backend reconnection:

[   22.444905] virtio_net virtio0: output.0:id 0 is not a head!
[   22.446746] net enp0s3: Unexpected TXQ (0) queue failure: -5
[   22.476360] net enp0s3: Unexpected TXQ (0) queue failure: -5

Fixes: 283e2c2adc ("net: virtio-net discards TX data after link down")
Cc: qemu-stable@nongnu.org
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 2ae39a113a)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
 		2017-12-06 09:55:22 -06:00
..
9pfs 9pfs: check the size of transport buffer before marshaling 2017-09-22 18:23:16 -05:00
acpi Revert "ACPI: don't call acpi_pcihp_device_plug_cb on xen" 2017-09-28 16:53:20 -05:00
adc
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alpha docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
arm memory: Get rid of address_space_init_shareable 2017-12-04 22:32:11 -06:00
audio trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
block virtio-blk: handle blk_getlength() errors 2017-08-10 14:33:43 +01:00
bt bt: stop the sdp memory allocation craziness 2017-08-01 17:27:33 +02:00
char trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
core loader: check get_image_size() return value 2017-07-31 13:06:38 +03:00
cpu cpu: don't allow negative core id 2017-08-02 18:30:13 -03:00
cris hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
display vga: stop passing pointers to vga_draw_line* functions 2017-09-22 18:11:23 -05:00
dma trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
gpio qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
i2c migration/next for 20170601 2017-06-02 14:07:53 +01:00
i386 kvmclock: use the updated system_timer_msr 2017-12-04 20:42:20 -06:00
ide ide: ahci: unparent children buses before freeing their memory 2017-09-22 18:12:41 -05:00
input trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
intc hw/intc/arm_gicv3_its: Don't abort on table save failure 2017-12-06 09:42:12 -06:00
ipack
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ipmi qom: enforce readonly nature of link's check callback 2017-07-14 12:04:42 +02:00
isa trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
lm32
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m68k hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
mem hw/ppc/spapr: Fix segfault when instantiating a 'pc-dimm' without 'memdev' 2017-08-22 21:26:46 +10:00
microblaze hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
mips mips: Add KVM T&E segment support for TCG 2017-08-02 22:18:06 +01:00
misc mmio-interface: Mark as not user creatable 2017-08-15 17:42:02 +01:00
moxie hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
net trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
nios2 hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
nvram trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
openrisc hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
pci trace-events: fix code style: %# -> 0x% 2017-08-01 12:13:07 +01:00
pci-bridge pci: Convert shpc_init() to Error 2017-07-03 22:29:49 +03:00
pci-host memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate() 2017-07-14 17:59:42 +01:00
pcmcia
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ppc hw/ppc: CAS reset on early device hotplug 2017-10-03 17:40:40 -05:00
s390x s390x/ipl: The s390-ipl device is not hot-pluggable 2017-09-22 18:12:09 -05:00
scsi scsi-bus: correct responses for INQUIRY and REQUEST SENSE 2017-09-19 17:44:14 -05:00
sd hw/sd: fix out-of-bounds check for multi block reads 2017-12-05 19:39:35 -06:00
sh4 hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
smbios
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sparc docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
sparc64 memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate() 2017-07-14 17:59:42 +01:00
ssi xlnx-qspi: add a property for mmio-execution 2017-08-14 14:17:18 +01:00
timer mc146818rtc: implement UIP latching as intended 2017-08-01 17:27:34 +02:00
tpm
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tricore hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
unicore32 fix qemu-system-unicore32 crashing when calling without -kernel 2017-07-31 13:05:49 +03:00
usb hw/usb/bus: Remove bad object_unparent() from usb_try_create_simple() 2017-12-04 20:37:19 -06:00
vfio trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
virtio vhost: restore avail index from vring used index on disconnection 2017-12-06 09:55:22 -06:00
watchdog watchdog/wdt_diag288: Mark diag288 watchdog as non-hotpluggable 2017-09-22 18:12:04 -05:00
xen trace-events: fix code style: %# -> 0x% 2017-08-01 12:13:07 +01:00
xenpv xenfb: remove xen_init_display "temporary" hack 2017-07-07 11:10:03 -07:00
xtensa hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
Makefile.objs
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