Shawn Lin 6fa92e2bcf staging: ion: fix corruption of ion_import_dma_buf ... we found this issue but still exit in lastest kernel. Simply keep ion_handle_create under mutex_lock to avoid this race. WARNING: CPU: 2 PID: 2648 at drivers/staging/android/ion/ion.c:512 ion_handle_add+0xb4/0xc0() ion_handle_add: buffer already found. Modules linked in: iwlmvm iwlwifi mac80211 cfg80211 compat CPU: 2 PID: 2648 Comm: TimedEventQueue Tainted: G W 3.14.0 #7 00000000 00000000 9a3efd2c 80faf273 9a3efd6c 9a3efd5c 80935dc9 811d7fd3 9a3efd88 00000a58 812208a0 00000200 80e128d4 80e128d4 8d4ae00c a8cd8600 a8cd8094 9a3efd74 80935e0e 00000009 9a3efd6c 811d7fd3 9a3efd88 9a3efd9c Call Trace: [<80faf273>] dump_stack+0x48/0x69 [<80935dc9>] warn_slowpath_common+0x79/0x90 [<80e128d4>] ? ion_handle_add+0xb4/0xc0 [<80e128d4>] ? ion_handle_add+0xb4/0xc0 [<80935e0e>] warn_slowpath_fmt+0x2e/0x30 [<80e128d4>] ion_handle_add+0xb4/0xc0 [<80e144cc>] ion_import_dma_buf+0x8c/0x110 [<80c517c4>] reg_init+0x364/0x7d0 [<80993363>] ? futex_wait+0x123/0x210 [<80992e0e>] ? get_futex_key+0x16e/0x1e0 [<8099308f>] ? futex_wake+0x5f/0x120 [<80c51e19>] vpu_service_ioctl+0x1e9/0x500 [<80994aec>] ? do_futex+0xec/0x8e0 [<80971080>] ? prepare_to_wait_event+0xc0/0xc0 [<80c51c30>] ? reg_init+0x7d0/0x7d0 [<80a22562>] do_vfs_ioctl+0x2d2/0x4c0 [<80b198ad>] ? inode_has_perm.isra.41+0x2d/0x40 [<80b199cf>] ? file_has_perm+0x7f/0x90 [<80b1a5f7>] ? selinux_file_ioctl+0x47/0xf0 [<80a227a8>] SyS_ioctl+0x58/0x80 [<80fb45e8>] syscall_call+0x7/0x7 [<80fb0000>] ? mmc_do_calc_max_discard+0xab/0xe4 Fixes: 83271f626 ("ion: hold reference to handle...") Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Reviewed-by: Laura Abbott <labbott@redhat.com> Cc: stable <stable@vger.kernel.org> # 3.14+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2015-09-17 06:11:04 -07:00
..
accessibility
acpi	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
amba
android	mm: mark most vm_operations_struct const	2015-09-10 13:29:01 -07:00
ata	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2015-09-03 16:55:55 -07:00
atm
auxdisplay
base	Additional power management and ACPI material for v4.3-rc1	2015-09-11 19:11:06 -07:00
bcma
block	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2015-09-11 12:33:03 -07:00
bluetooth	Bluetooth: hci_bcm: Fix crash on suspend	2015-08-28 21:09:14 +02:00
bus	regmap: Changes for v4.3	2015-09-08 16:48:55 -07:00
cdrom
char	IPMI updates for 4.3	2015-09-08 18:19:17 -07:00
clk	ARM: SoC: late fixes and dependencies	2015-09-10 17:59:04 -07:00
clocksource	- New Device Support	2015-09-04 11:35:03 -07:00
connector
cpufreq	Additional power management and ACPI material for v4.3-rc1	2015-09-11 19:11:06 -07:00
cpuidle	Additional power management and ACPI material for v4.3-rc1	2015-09-11 19:11:06 -07:00
crypto	drivers/crypto/qat: use seq_hex_dump() to dump buffers	2015-09-10 13:29:01 -07:00
dca
devfreq
dio
dma	dmaengine updates for 4.3-rc1	2015-09-04 11:10:18 -07:00
dma-buf
edac	edac updates for v4.3-rc1	2015-09-11 16:21:12 -07:00
eisa
extcon	regulator: Updates for v4.3	2015-08-31 15:49:19 -07:00
firewire
firmware	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
fmc
gpio	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2015-09-04 15:49:32 -07:00
gpu	media updates for v4.3-rc1	2015-09-11 16:42:39 -07:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-09-04 12:02:11 -07:00
hsi	mm: mark most vm_operations_struct const	2015-09-10 13:29:01 -07:00
hv
hwmon	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
hwspinlock
hwtracing/coresight
i2c	Merge branch 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2015-09-08 16:16:26 -07:00
ide
idle
iio	This is the bulk of GPIO changes for the v4.3 kernel cycle:	2015-09-04 10:07:45 -07:00
infiniband	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-09-11 19:00:42 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-09-11 19:17:28 -07:00
iommu	fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void	2015-09-11 15:21:34 -07:00
ipack
irqchip	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-08 11:36:56 -07:00
isdn	libnvdimm for 4.3:	2015-09-08 14:35:59 -07:00
leds	- Stop using LP855X Platform Data to control regulators	2015-09-04 11:40:40 -07:00
lguest
macintosh	powerpc updates for 4.3	2015-09-03 16:41:38 -07:00
mailbox	Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2015-09-05 18:11:04 -07:00
mcb
md	SCSI misc on 20150911	2015-09-11 18:15:18 -07:00
media	media updates for v4.3-rc1	2015-09-11 16:42:39 -07:00
memory	IOMMU Updates for Linux v4.3	2015-09-08 17:22:35 -07:00
memstick
message
mfd	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2015-09-04 15:49:32 -07:00
misc	Merge git://www.linux-watchdog.org/linux-watchdog	2015-09-11 15:12:59 -07:00
mmc	MMC core:	2015-09-08 16:33:16 -07:00
mtd	MTD updates #2 for 4.3-rc1:	2015-09-09 11:17:33 -07:00
net	NTB bug and documentation fixes, new device IDs, performance	2015-09-11 19:29:00 -07:00
nfc	This is the bulk of GPIO changes for the v4.3 kernel cycle:	2015-09-04 10:07:45 -07:00
ntb	NTB: Fix range check on memory window index	2015-09-07 15:27:12 -04:00
nubus
nvdimm	libnvdimm for 4.3:	2015-09-08 14:35:59 -07:00
nvmem
of	Merge branch 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2015-09-08 16:16:26 -07:00
oprofile
parisc	parisc: use seq_hex_dump() to dump buffers	2015-09-10 13:29:01 -07:00
parport
pci	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
pcmcia	pcmcia: soc_common: remove skt_dev_info's clk pointer	2015-09-03 16:01:03 +01:00
perf
phy	This is the bulk of GPIO changes for the v4.3 kernel cycle:	2015-09-04 10:07:45 -07:00
pinctrl	This is the bulk of pin control changes for the v4.3 development	2015-09-04 10:22:09 -07:00
platform	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
pnp
power	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
powercap	powercap / RAPL: disable the 2nd power limit properly	2015-08-29 01:46:40 +02:00
pps
ps3
ptp
pwm	pwm: Changes for v4.3-rc1	2015-09-09 10:55:32 -07:00
rapidio
ras
regulator	regmap: Changes for v4.3	2015-09-08 16:48:55 -07:00
remoteproc
reset	reset: ath79: Fix missing spin_lock_init	2015-09-01 14:48:40 +02:00
rpmsg
rtc	rtc: abx80x: fix RTC write bit	2015-09-05 19:37:31 +02:00
s390	drivers/s390/crypto/zcrypt_api.c: use seq_hex_dump() to dump buffers	2015-09-10 13:29:01 -07:00
sbus
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-09-11 19:00:42 -07:00
sfi
sh
sn
soc	ARM: SoC: late fixes and dependencies	2015-09-10 17:59:04 -07:00
spi	Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/xcomm' and 'spi/topic/xlp' into spi-next	2015-08-31 14:45:45 +01:00
spmi	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-01 14:33:35 -07:00
ssb
staging	staging: ion: fix corruption of ion_import_dma_buf	2015-09-17 06:11:04 -07:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-09-11 19:00:42 -07:00
tc
thermal	thermal: fix intel PCH thermal driver mismerge	2015-09-11 20:06:59 -07:00
thunderbolt
tty	xen: MFN/GFN/BFN terminology changes for 4.3-rc0	2015-09-10 16:21:11 -07:00
uio
usb	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2015-09-01 18:46:42 -07:00
uwb
vfio
vhost
video	Merge branch 'akpm' (patches from Andrew)	2015-09-10 18:19:42 -07:00
virt
virtio	virtio_balloon: do not change memory amount visible via /proc/meminfo	2015-09-08 13:32:11 +03:00
vlynq
vme
w1	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2015-09-01 18:46:42 -07:00
watchdog	Merge git://www.linux-watchdog.org/linux-watchdog	2015-09-11 15:12:59 -07:00
xen	Merge branch 'akpm' (patches from Andrew)	2015-09-10 18:19:42 -07:00
zorro
Kconfig	Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm	2015-09-03 16:27:01 -07:00
Makefile	This is the bulk of pin control changes for the v4.3 development	2015-09-04 10:22:09 -07:00