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Paolo Bonzini 6b49809c59 cpus: fix deadlock and segfault in qemu_mutex_lock_iothread 
When two threads (other than the low-priority TCG VCPU thread)
are competing for the iothread lock, a deadlock can happen.  This
is because iothread_requesting_mutex is set to false by the first
thread that gets the mutex, and then the VCPU thread might never
yield from the execution loop.  If iothread_requesting_mutex is
changed from a bool to a counter, the deadlock is fixed.

However, there is another bug in qemu_mutex_lock_iothread that
can be triggered by the new call_rcu thread.  The bug happens
if qemu_mutex_lock_iothread is called before the CPUs are
created.  In that case, first_cpu is NULL and the caller
segfaults in qemu_mutex_lock_iothread.  To fix this, just
do not do the kick if first_cpu is NULL.

Reported-by: Leon Alrae <leon.alrae@imgtec.com>
Reported-by: Andreas Gustafsson <gson@gson.org>
Tested-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-03-02 10:57:07 +01:00
audio
audio: Don't free hw resources until after hw backend is stopped
2014-12-22 23:12:25 +00:00
backends
Drop superfluous conditionals around g_strdup()
2014-12-10 11:30:55 +03:00
block
iscsi: Handle write protected case in reopen
2015-02-27 18:26:31 +01:00
bsd-user
bsd-user/elfload.c: Don't use ldl() or ldq_raw()
2015-01-20 15:19:33 +00:00
default-configs
Give ivshmem its own config option
2015-02-27 15:17:46 +01:00
disas
disas/sh4: Fix warning caused by missing 'static' attribute
2015-02-10 10:26:05 +03:00
docs
rcu: add g_free_rcu
2015-02-16 17:30:19 +01:00
dtc @ bc895d6d09
dtc: add submodule
2013-04-18 13:50:53 +02:00
fpu
softfloat: expand out STATUS macro
2015-02-06 16:11:38 +00:00
fsdev
virtfs-proxy-helper: Fix possible socket leak.
2015-02-10 09:27:20 +03:00
gdb-xml
s390x/gdb: add the feature xml files for s390x
2014-09-01 09:45:19 +02:00
hw
virtio-scsi: Allocate op blocker reason before blocking
2015-03-02 10:57:07 +01:00
include
block: Forbid bdrv_set_aio_context outside BQL
2015-02-27 14:43:45 +01:00
libcacard
libcacard: stop linking against every single 3rd party library
2015-02-10 09:27:20 +03:00
libdecnumber
libdecnumber: Fix warnings from smatch (missing static, boolean operations)
2014-08-24 13:21:06 +04:00
linux-headers
linux-headers: update to 3.18-rc5
2014-11-18 11:24:31 +00:00
linux-user
linux-user: correct stat structure in MIPS N32
2015-02-13 14:11:29 +00:00
migration
migration: Fix warnings caused by missing 'static' attribute
2015-02-10 10:26:05 +03:00
net
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' into staging
2015-02-26 07:01:08 +00:00
pc-bios
seabios: update to 1.8.0 release
2015-02-19 09:33:03 +01:00
pixman @ 87eea99e44
pixman: update internal copy to pixman-0.32.6
2014-09-15 08:14:19 +02:00
po
po: fix conflict with %.mo rule in rules.mak
2014-09-26 13:35:08 +02:00
qapi
block: add event when disk usage exceeds threshold
2015-02-06 17:24:21 +01:00
qga
qemu-ga-win: Fail loudly on bare 'set-time'
2015-02-17 16:21:50 -06:00
qobject
qjson: Drop trailing space for pretty formatting
2014-12-10 10:25:30 +01:00
qom
error: Use error_report_err() where appropriate
2015-02-18 10:51:09 +01:00
roms
seabios: update to 1.8.0 release
2015-02-19 09:33:03 +01:00
scripts
Makefile: don't silence mak file test with V=1
2015-02-27 19:42:45 +01:00
slirp
slirp: udp: fix NULL pointer dereference because of uninitialized socket
2014-09-23 19:15:05 +01:00
stubs
stubs: Fix warning caused by missing include statement
2015-02-10 10:26:05 +03:00
sysconfigs/target
Eliminate cpus-x86_64.conf file
2012-09-21 15:12:58 +02:00
target-alpha
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-arm
Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20150212' into staging
2015-02-13 11:44:50 +00:00
target-cris
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-i386
error: Use error_report_err() where appropriate
2015-02-18 10:51:09 +01:00
target-lm32
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-m68k
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-microblaze
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-mips
target-mips: pass 0 instead of -1 as rs in microMIPS LUI instruction
2015-02-13 14:11:29 +00:00
target-moxie
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-openrisc
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-ppc
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-s390x
s390x/helper: Remove s390_cpu_physical_memory_map
2015-02-18 09:37:15 +01:00
target-sh4
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-sparc
error: Use error_report_err() where appropriate
2015-02-18 10:51:09 +01:00
target-tricore
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-unicore32
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
target-xtensa
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
2015-02-12 21:21:38 -08:00
tcg
tcg: Remove unused opcodes
2015-02-12 21:21:38 -08:00
tests
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
2015-02-24 13:58:18 +00:00
trace
trace: [hmp] Reimplement "trace-event" and "info trace-events" using QMP
2014-09-26 09:34:38 +01:00
ui
Merge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2015-02-18' into staging
2015-02-25 13:14:37 +00:00
util
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' into staging
2015-02-26 07:01:08 +00:00
.exrc
qemu: add .exrc
2012-09-07 09:02:44 +03:00
.gitignore
.gitignore: Ignore generated "common.env"
2015-01-13 13:43:28 +00:00
.gitmodules
PPC: Add u-boot firmware for e500
2014-06-16 13:24:35 +02:00
.mailmap
Update mailmap
2013-09-05 09:40:31 -05:00
.travis.yml
.travis.yml: Add "--enable-modules"
2015-01-26 12:27:05 +01:00
accel.c
accel: Create accel object when initializing machine
2014-10-09 15:36:14 +02:00
aio-posix.c
block: Use g_new0() for a bit of extra type checking
2014-12-10 10:31:21 +01:00
aio-win32.c
block: Use g_new0() for a bit of extra type checking
2014-12-10 10:31:21 +01:00
arch_init.c
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' into staging
2015-02-26 07:01:08 +00:00
async.c
block: replace g_new0 with g_new for bottom half allocation.
2015-01-13 11:47:56 +00:00
balloon.c
balloon: Fix typo
2015-02-23 10:56:09 -05:00
block.c
block: Keep bdrv_check*_request()'s return value
2015-02-16 15:07:19 +00:00
blockdev-nbd.c
nbd: Change external interface to BlockBackend
2014-12-10 10:31:12 +01:00
blockdev.c
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' into staging
2015-02-26 07:01:08 +00:00
blockjob.c
block: declare blockjobs and dataplane friends!
2014-11-03 11:41:49 +00:00
bootdevice.c
bootdevice: fix segment fault when booting guest with '-kernel' and '-initrd'
2015-02-27 15:15:56 +01:00
bt-host.c
sysemu: avoid proliferation of include/ subdirectories
2013-04-15 18:19:25 +02:00
bt-vhci.c
sysemu: avoid proliferation of include/ subdirectories
2013-04-15 18:19:25 +02:00
Changelog
Use qemu-project.org domain name
2013-10-11 09:34:56 -07:00
CODING_STYLE
CODING_STYLE: Section about conditional statement
2014-08-15 18:54:06 +04:00
configure
block/dmg: support bzip2 block entry types
2015-02-06 17:24:21 +01:00
COPYING
…
COPYING.LIB
…
coroutine-gthread.c
glib-compat.h: add new thread API emulation on top of pre-2.31 API
2014-06-10 07:44:01 +02:00
coroutine-sigaltstack.c
coroutine-sigaltstack: Change jmp_buf to sigjmp_buf
2014-11-11 11:07:55 +03:00
coroutine-ucontext.c
coroutine-ucontext: use __thread
2015-01-13 13:43:28 +00:00
coroutine-win32.c
coroutine-win32.c: Add noinline attribute to work around gcc bug
2014-06-26 14:08:14 +01:00
cpu-exec.c
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
2015-02-24 13:58:18 +00:00
cpus.c
cpus: fix deadlock and segfault in qemu_mutex_lock_iothread
2015-03-02 10:57:07 +01:00
cputlb.c
exec: RCUify AddressSpaceDispatch
2015-02-16 17:30:19 +01:00
device_tree.c
device-tree: fix memory leak
2015-01-07 16:16:26 +01:00
device-hotplug.c
hmp: Name HMP command handler functions hmp_COMMAND()
2015-02-18 11:58:30 +01:00
disas.c
monitor: QEMU Monitor Instruction Disassembly Incorrect for PowerPC LE Mode
2014-06-16 13:24:26 +02:00
dma-helpers.c
hw: Convert from BlockDriverState to BlockBackend, mostly
2014-10-20 14:02:25 +02:00
dump.c
dump: Fix dump-guest-memory termination and use-after-close
2014-11-02 10:04:34 +03:00
exec.c
Convert ram_list to RCU
2015-02-16 17:31:55 +01:00
gdbstub.c
Add the "-semihosting-config" option.
2014-12-11 12:07:48 +00:00
HACKING
HACKING: Document vaddr type usage
2013-07-23 02:41:31 +02:00
hmp-commands.hx
hmp: Name HMP command handler functions hmp_COMMAND()
2015-02-18 11:58:30 +01:00
hmp.c
Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging
2015-02-26 12:16:46 +00:00
hmp.h
hmp: Name HMP command handler functions hmp_COMMAND()
2015-02-18 11:58:30 +01:00
iohandler.c
iohandler.c: Properly initialize sigaction struct
2014-05-24 00:07:29 +04:00
ioport.c
memory: convert memory_region_destroy to object_unparent
2014-08-18 12:06:20 +02:00
iothread.c
async: aio_context_new(): Handle event_notifier_init failure
2014-09-22 11:39:48 +01:00
kvm-all.c
kvm: g_malloc() can't fail, bury dead error handling
2015-02-10 09:27:20 +03:00
kvm-stub.c
pc: kvm: check if KVM has free memory slots to avoid abort()
2014-11-23 12:11:29 +02:00
LICENSE
vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio
2014-12-19 15:24:06 -07:00
main-loop.c
Revert "main-loop.c: Handle SIGINT, SIGHUP and SIGTERM synchronously"
2014-10-27 15:05:09 +00:00
MAINTAINERS
Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging
2015-02-06 14:35:52 +00:00
Makefile
Makefile: don't silence mak file test with V=1
2015-02-27 19:42:45 +01:00
Makefile.objs
QJSON: Add JSON writer
2015-02-05 17:16:14 +01:00
Makefile.target
Makefile.target: binary depends on config-devices
2015-02-27 19:42:45 +01:00
memory_mapping.c
Add skip_dump flag to ignore memory region during dump
2014-10-31 11:29:01 +01:00
memory.c
memory: keep the owner of the AddressSpace alive until do_address_space_destroy
2015-02-11 21:48:44 +01:00
module-common.c
module: implement module loading
2014-02-20 13:14:18 +01:00
monitor.c
Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging
2015-02-26 12:16:46 +00:00
nbd.c
nbd: Drop BDS backpointer
2015-02-16 14:36:03 +00:00
numa.c
numa: Avoid qerror_report_err() outside QMP command handlers
2015-02-18 10:51:37 +01:00
os-posix.c
os-posix: reorder parent notification for -daemonize
2014-11-02 10:04:34 +03:00
os-win32.c
pidfile: stop making pidfile error a special case
2014-11-02 10:04:34 +03:00
page_cache.c
xbzrle: rebuild the cache_is_cached function
2015-01-15 17:49:43 +05:30
qapi-schema.json
Merge remote-tracking branch 'remotes/kraxel/tags/pull-input-20150122-1' into staging
2015-01-22 17:41:59 +00:00
qdev-monitor.c
hmp: Name HMP info handler functions hmp_info_SUBCOMMAND()
2015-02-18 11:58:50 +01:00
qdict-test-data.txt
…
qemu-bridge-helper.c
qemu-bridge-helper: Fix fd leak in main()
2014-06-27 10:39:10 +02:00
qemu-char.c
qemu-char: Avoid qerror_report_err() outside QMP command handlers
2015-02-18 10:51:40 +01:00
qemu-coroutine-io.c
qemu-coroutine-io: fix for Win32
2014-08-29 10:46:58 +01:00
qemu-coroutine-lock.c
coroutine: remove qemu_co_queue_wait_insert_head
2013-12-02 17:11:49 +01:00
qemu-coroutine-sleep.c
coroutine: Drop co_sleep_ns
2014-08-29 10:46:58 +01:00
qemu-coroutine.c
coroutine: try harder not to delete coroutines
2015-01-13 13:43:29 +00:00
qemu-doc.texi
block: vhdx - change .vhdx_create default block state to ZERO
2014-12-12 15:42:49 +00:00
qemu-img-cmds.hx
qemu-img: Add progress output for amend
2014-11-03 11:41:48 +00:00
qemu-img.c
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' into staging
2015-02-26 07:01:08 +00:00
qemu-img.texi
qemu-img: Add progress output for amend
2014-11-03 11:41:48 +00:00
qemu-io-cmds.c
qemu-io: Use BlockBackend
2015-02-16 15:07:19 +00:00
qemu-io.c
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' into staging
2015-02-26 07:01:08 +00:00
qemu-log.c
qemu-log: Correct help text of 'log cpu_reset'
2015-02-10 09:27:20 +03:00
qemu-nbd.c
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' into staging
2015-02-26 07:01:08 +00:00
qemu-nbd.texi
nbd: Miscellaneous typo fixes.
2014-05-24 00:07:29 +04:00
qemu-options-wrapper.h
vl.c: In qemu -h output, only print options for the arch we are running as
2011-12-19 10:27:33 -06:00
qemu-options.h
vl.c: Move option generation logic into a wrapper file
2011-12-19 10:27:33 -06:00
qemu-options.hx
spice: add unix address support
2015-01-22 11:18:41 +01:00
qemu-seccomp.c
seccomp: add mlockall to whitelist
2015-01-23 14:07:08 +01:00
qemu-tech.texi
qemu-tech.texi: update implemented xtensa features list
2012-11-29 13:00:52 -06:00
qemu-timer.c
qemu-timer.c: Trim list of included headers
2015-01-26 18:15:54 +00:00
qemu.nsi
nsis: Improved support for parallel installation of 32 and 64 bit code
2013-11-07 07:02:44 +01:00
qemu.sasl
sasl: Avoid 'Could not find keytab file' in syslog
2014-03-15 13:54:18 +04:00
qjson.c
QJSON: fix typo in author's email address
2015-02-10 09:27:20 +03:00
qmp-commands.hx
block: add event when disk usage exceeds threshold
2015-02-06 17:24:21 +01:00
qmp.c
vnc: auto assian an id when calling change vnc qmp interface
2015-02-16 08:47:59 +01:00
qtest.c
qtest: fix qtest log fd should be initialized before qtest chardev
2014-10-23 16:41:27 +02:00
README
Use qemu-project.org domain name
2013-10-11 09:34:56 -07:00
rules.mak
rules.mak: Fix module build
2015-01-14 10:38:57 +01:00
savevm.c
Merge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2015-02-18' into staging
2015-02-25 13:14:37 +00:00
softmmu_template.h
exec: make iotlb RCU-friendly
2015-02-16 17:30:19 +01:00
spice-qemu-char.c
spice: Add missing 'static' attribute
2015-02-10 10:26:05 +03:00
tcg-runtime.c
tcg: Push tcg-runtime routines into exec/helper-*
2014-05-28 09:33:54 -07:00
tci.c
tcg: Remove unused opcodes
2015-02-12 21:21:38 -08:00
thread-pool.c
block: Rename BlockDriverCompletionFunc to BlockCompletionFunc
2014-10-20 13:41:27 +02:00
thunk.c
exec: move include files to include/exec/
2012-12-19 08:31:31 +01:00
tpm.c
tpm: Avoid qerror_report_err() outside QMP command handlers
2015-02-18 10:51:37 +01:00
trace-events
Convert some debugging printfs to trace calls in pcnet.c.
2015-02-10 09:27:20 +03:00
translate-all.c
translate-all: Use g_try_malloc() for dynamic translator buffer
2015-02-10 09:27:21 +03:00
translate-all.h
translate-all: Change tb_check_watchpoint() argument to CPUState
2014-03-13 19:20:48 +01:00
user-exec.c
softmmu: introduce cpu_ldst.h
2014-06-05 16:10:33 +02:00
VERSION
Open 2.3 development tree
2014-12-09 21:48:34 +00:00
version.rc
Use qemu-project.org domain name
2013-10-11 09:34:56 -07:00
vl.c
timer: replace time() with QEMU_CLOCK_HOST
2015-02-27 15:15:50 +01:00
xen-common-stub.c
accel: Move Xen registration code to xen-common.c
2014-10-04 08:59:15 +02:00
xen-common.c
accel: Pass MachineState object to accel init functions
2014-10-09 12:57:10 +02:00
xen-hvm-stub.c
xen-hvm: Fix xen_hvm_init() to adjust pc memory layout
2014-06-23 17:50:04 +03:00
xen-hvm.c
Xen: Use the ioreq-server API when available
2015-01-20 14:24:10 +00:00
xen-mapcache.c
xen: add a lock for the mapcache
2015-01-20 14:24:17 +00:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team
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