Li Qiang ba42ebb863 9pfs: allocate space for guest originated empty strings ... If a guest sends an empty string paramater to any 9P operation, the current code unmarshals it into a V9fsString equal to { .size = 0, .data = NULL }. This is unfortunate because it can cause NULL pointer dereference to happen at various locations in the 9pfs code. And we don't want to check str->data everywhere we pass it to strcmp() or any other function which expects a dereferenceable pointer. This patch enforces the allocation of genuine C empty strings instead, so callers don't have to bother. Out of all v9fs_iov_vunmarshal() users, only v9fs_xattrwalk() checks if the returned string is empty. It now uses v9fs_string_size() since name.data cannot be NULL anymore. Signed-off-by: Li Qiang <liqiang6-s@360.cn> [groug, rewritten title and changelog, fix empty string check in v9fs_xattrwalk()] Signed-off-by: Greg Kurz <groug@kaod.org>		2016-10-17 14:13:58 +02:00
..
9pfs	9pfs: allocate space for guest originated empty strings	2016-10-17 14:13:58 +02:00
acpi	acpi: provide _PXM method for CPU devices if QEMU is started numa enabled	2016-10-10 01:16:57 +03:00
adc	STM32F2xx: Add the ADC device	2016-10-04 13:28:07 +01:00
alpha	trace-events: fix first line comment in trace-events	2016-08-12 10:36:01 +01:00
arm	virtio, pc: fixes and features	2016-10-10 16:23:40 +01:00
audio	pcspk: adding vmstate for save/restore	2016-09-15 15:10:06 +02:00
block	virtio, pc: fixes and features	2016-10-10 16:23:40 +01:00
bt	bt-hci-csr: drop unused argument	2016-10-08 09:02:19 +03:00
char	virtio: cleanup VMSTATE_VIRTIO_DEVICE	2016-10-10 02:21:43 +03:00
core	generic-loader: Add a generic loader	2016-10-04 13:28:09 +01:00
cpu
cris	cris: Fix broken header guard in hw/cris/boot.h	2016-07-12 16:20:46 +02:00
display	virtio, pc: fixes and features	2016-10-10 16:23:40 +01:00
dma	hw/dma: vmstateify rc4030	2016-09-29 12:07:51 +01:00
gpio
i2c	i2c: fix migration regression introduced by broadcast support	2016-08-03 18:44:56 +02:00
i386	virtio, pc: fixes and features	2016-10-10 16:23:40 +01:00
ide	Block layer patches	2016-10-04 14:25:08 +01:00
input	virtio: cleanup VMSTATE_VIRTIO_DEVICE	2016-10-10 02:21:43 +03:00
intc	* Thread Sanitizer fixes (Alex)	2016-10-10 10:39:29 +01:00
ipack
ipmi	vl: Switch qemu_uuid to QemuUUID	2016-09-23 11:42:52 +08:00
isa	portio: keep references on portio	2016-09-08 18:05:21 +04:00
lm32	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
m68k	m68k: change default system clock for m5208evb	2016-10-08 11:25:29 +03:00
mem	trace: move hw/mem/pc-dimm.c trace points into correct file	2016-09-28 19:17:54 +01:00
microblaze	Clean up ill-advised or unusual header guards	2016-07-12 16:20:46 +02:00
mips	error: Strip trailing '\n' from error string arguments (again)	2016-08-08 09:00:44 +02:00
misc	hw/misc/edu: support MSI interrupt	2016-10-04 10:00:25 +02:00
moxie
net	virtio: cleanup VMSTATE_VIRTIO_DEVICE	2016-10-10 02:21:43 +03:00
nvram	vl: Switch qemu_uuid to QemuUUID	2016-09-23 11:42:52 +08:00
openrisc
pci	trace-events: fix first line comment in trace-events	2016-08-12 10:36:01 +01:00
pci-bridge	hw/pci-bridge: Convert pxb initialization functions to Error	2016-07-29 00:07:09 +03:00
pci-host	apb: convert init to realize	2016-07-29 00:07:09 +03:00
pcmcia
ppc	numa: reduce code duplication by adding helper numa_get_node_for_cpu()	2016-10-10 01:16:57 +03:00
s390x	s390x/css: {c,h,t,r,x}sch: require enable AND device number valid	2016-09-28 13:24:51 +02:00
scsi	virtio: cleanup VMSTATE_VIRTIO_DEVICE	2016-10-10 02:21:43 +03:00
sd	vmstateify ssi-sd	2016-09-22 18:13:08 +01:00
sh4	sh4: fix broken link to documentation	2016-09-15 15:32:22 +03:00
smbios	smbios: fix uuid copy	2016-09-29 11:43:22 +08:00
sparc	intc: make HMP 'info irq' and 'info pic' commands use InterruptStatsProvider interface	2016-10-04 10:00:25 +02:00
sparc64
ssi	STM32F2xx: Add the SPI device	2016-10-04 13:28:07 +01:00
timer	* Thread Sanitizer fixes (Alex)	2016-10-10 10:39:29 +01:00
tpm	Clean up header guards that don't match their file name	2016-07-12 16:19:16 +02:00
tricore	tricore: remove useless cast	2016-09-15 15:32:22 +03:00
unicore32
usb	usb-redir: allocate buffers before waking up the host adapter	2016-10-12 14:37:24 +02:00
vfio	memory: introduce IOMMUNotifier and its caps	2016-09-27 08:59:16 +02:00
virtio	virtio, pc: fixes and features	2016-10-10 16:23:40 +01:00
watchdog
xen	Xen: fix converity warning of xen_pt_config_init()	2016-08-12 16:38:18 -07:00
xenpv	xenpv: Fix qemu_uuid compiling error	2016-09-29 11:43:17 +08:00
xtensa	target-xtensa: xtfpga: fix FLASH interface width	2016-07-14 13:59:44 +03:00
Makefile.objs	STM32F2xx: Add the ADC device	2016-10-04 13:28:07 +01:00