Paulo Zanoni b6ae3c7c60 drm/i915: don't reference null pointer at i915_sink_crc ... Reproducible by runtime suspending a Haswell machine with eDP + HDMI outputs connected. [ 209.600086] [drm:i915_runtime_suspend], Suspending device [ 209.688435] BUG: unable to handle kernel NULL pointer dereference at 0000000000000060 [ 209.688500] IP: [<ffffffffa0109d4e>] i915_sink_crc+0x6e/0xf0 [i915] [ 209.688577] PGD 36aba067 PUD 35d7f067 PMD 0 [ 209.688613] Oops: 0000 [#1] SMP [ 209.688641] Modules linked in: fuse ip6table_filter ip6_tables ebtable_nat ebtables iTCO_wdt iTCO_vendor_support x86_pkg_temp_thermal coretemp microcode serio_raw e1000e pcspkr i2c_i801 ptp mei_me mei lpc_ich mfd_core pps_core dm_crypt i915 i2c_algo_bit crc32_pclmul drm_kms_helper crc32c_intel drm ghash_clmulni_intel video [ 209.688893] CPU: 1 PID: 1797 Comm: pm_pc8 Not tainted 3.13.0+ #118 [ 209.688937] Hardware name: Intel Corporation Shark Bay Client platform/WhiteTip Mountain 1, BIOS HSWLPTU1.86C.0133.R00.1309172123 09/17/2013 [ 209.689023] task: ffff88007fb4b690 ti: ffff88007d9d2000 task.ti: ffff88007d9d2000 [ 209.689074] RIP: 0010:[<ffffffffa0109d4e>] [<ffffffffa0109d4e>] i915_sink_crc+0x6e/0xf0 [i915] [ 209.689169] RSP: 0018:ffff88007d9d3e68 EFLAGS: 00010246 [ 209.689205] RAX: 0000000000000000 RBX: ffff880036a03478 RCX: ffff8800366c9770 [ 209.689252] RDX: ffff88014325cf38 RSI: ffff88007fb4bd08 RDI: ffff88007fb4b690 [ 209.689299] RBP: ffff88007d9d3e98 R08: 0000000000000000 R09: 0000000000000000 [ 209.689346] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8800366c9148 [ 209.689393] R13: 00000000ffffffed R14: ffff88007d9d3f50 R15: ffff880036a03478 [ 209.689441] FS: 00007f5a74bc29c0(0000) GS:ffff88014f240000(0000) knlGS:0000000000000000 [ 209.689494] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 209.689533] CR2: 0000000000000060 CR3: 0000000079d7e000 CR4: 00000000001407e0 [ 209.689580] Stack: [ 209.689594] 0000000000001000 ffff880146083980 ffff880146083980 0000000000000000 [ 209.689649] ffff880146083980 0000000000000001 ffff88007d9d3f00 ffffffff811d0744 [ 209.689702] 0000000000000046 00007fff7949fe20 ffff880036a034b8 0000000000000080 [ 209.689756] Call Trace: [ 209.689778] [<ffffffff811d0744>] seq_read+0x164/0x3e0 [ 209.689816] [<ffffffff811ab165>] vfs_read+0x95/0x160 [ 209.689851] [<ffffffff811abc79>] SyS_read+0x49/0xa0 [ 209.689888] [<ffffffff810ef64c>] ? __audit_syscall_entry+0x9c/0xf0 [ 209.689933] [<ffffffff81659412>] system_call_fastpath+0x16/0x1b Testcase: igt/pm_pc8 (do a full run, it will fail at the debugfs-read subtest) Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Flip around NULL check for robustness.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2014-02-13 22:33:28 +01:00
..
accessibility	…
acpi	Revert "ACPI: Add BayTrail SoC GPIO and LPSS ACPI IDs"	2014-01-18 14:04:58 +01:00
amba	DMA-API: amba: get rid of separate dma_mask	2013-10-31 14:48:38 +00:00
ata	Merge branch 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata	2014-01-09 09:08:23 +08:00
atm	atm: idt77252: fix dev refcnt leak	2013-11-19 15:53:02 -05:00
auxdisplay	framebuffer: Use fb_<level>	2013-10-29 12:53:07 +02:00
base	Revert "cpufreq: suspend governors on system suspend/hibernate"	2013-12-08 01:04:17 +01:00
bcma	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2013-11-13 17:40:34 +09:00
block	block: null_blk: fix queue leak inside removing device	2014-01-12 16:22:42 +07:00
bluetooth	Bluetooth: Add support for Toshiba Bluetooth device [0930:0220]	2013-12-04 11:11:49 -02:00
bus	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2013-11-14 08:51:29 +09:00
cdrom	…
char	Merge commit origin/master into drm-intel-next	2014-01-16 22:06:30 +01:00
clk	Merge branch 'drm-intel-next' of git://people.freedesktop.org/~danvet/drm-intel into drm-next	2014-01-20 10:21:54 +10:00
clocksource	clocksource: cadence_ttc: Fix mutex taken inside interrupt context	2013-12-30 11:32:24 +01:00
connector	connector: improved unaligned access error fix	2013-11-14 17:19:20 -05:00
cpufreq	intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters.	2014-01-06 22:16:14 +01:00
cpuidle	ARM/cpuidle: remove __init tag from Calxeda cpuidle probe function	2013-12-30 11:55:20 +01:00
crypto	crypto: ixp4xx - Fix kernel compile error	2014-01-01 14:06:23 +08:00
dca	…
devfreq	Merge branch 'pm-devfreq'	2013-11-07 19:24:20 +01:00
dio	…
dma	Merge branch 'drm-intel-next' of git://people.freedesktop.org/~danvet/drm-intel into drm-next	2014-01-20 10:21:54 +10:00
edac	sb_edac: Shut up compiler warning when EDAC_DEBUG is enabled	2013-11-30 12:26:36 +01:00
eisa	…
extcon	extcon: remove freed groups caused the panic or warning in unregister flow	2013-11-26 15:17:23 +09:00
firewire	firewire: sbp2: bring back WRITE SAME support	2013-12-15 16:32:32 +01:00
firmware	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-12-29 13:35:04 -08:00
fmc	…
gpio	GPIO fixes for the v3.13 development cycle:	2013-12-17 11:47:40 -08:00
gpu	drm/i915: don't reference null pointer at i915_sink_crc	2014-02-13 22:33:28 +01:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2013-12-13 13:21:28 -08:00
hsi	…
hv	…
hwmon	hwmon: (coretemp) Fix truncated name of alarm attributes	2014-01-14 09:47:52 -08:00
hwspinlock	…
i2c	ARM: tegra: implement common DMA and resets DT bindings	2013-12-17 18:09:16 +01:00
ide	More ACPI and power management updates for 3.13-rc1	2013-11-20 13:25:04 -08:00
idle	intel_idle: close avn_cstates array with correct marker	2014-01-10 03:06:06 +01:00
iio	iio:adc:ad7887 Fix channel reported endianness from cpu to big endian	2013-12-17 20:37:14 +00:00
infiniband	infiniband: make sure the src net is infiniband when create new link	2014-01-03 20:38:56 -05:00
input	Merge branch 'drm-intel-next' of git://people.freedesktop.org/~danvet/drm-intel into drm-next	2014-01-20 10:21:54 +10:00
iommu	iommu/arm-smmu: fix error return code in arm_smmu_device_dt_probe()	2013-12-06 16:44:25 +00:00
ipack	…
irqchip	Renesas ARM based SoC fixes for v3.13	2013-12-20 11:28:30 -08:00
isdn	isdn: Drop big endian cpp checks from telespci and hfc_pci drivers	2014-01-06 15:50:51 -05:00
leds	leds: lp5521/5523: Remove duplicate mutex	2014-01-10 14:48:07 -08:00
lguest	x86, asmlinkage, lguest: Pass in globals into assembler statement	2013-11-07 12:13:05 +10:30
macintosh	powerpc/windfarm: Fix XServe G5 fan control Makefile issue	2013-11-27 11:35:47 +11:00
mailbox	…
md	md: half a dozen bug fixes for 3.13	2014-01-15 15:07:36 +07:00
media	[media] videobuf2-dma-sg: fix possible memory leak	2013-12-10 05:40:57 -02:00
memory	…
memstick	tree-wide: use reinit_completion instead of INIT_COMPLETION	2013-11-15 09:32:21 +09:00
message	drivers/message/i2o/driver.c: add missing destroy_workqueue() on error in i2o_driver_register()	2013-11-13 12:09:26 +09:00
mfd	This is the 2nd MFD pull request for 3.13	2014-01-11 06:23:57 +07:00
misc	Char/Misc driver fixes for 3.13-rc3	2013-12-08 18:47:25 -08:00
mmc	mmc: omap: Fix I2C dependency and make driver usable with device tree	2013-11-26 15:51:16 -08:00
mtd	Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm	2014-01-06 12:20:45 +11:00
net	e1000e: Fix compilation warning when !CONFIG_PM_SLEEP	2014-01-16 15:36:26 -08:00
nfc	…
ntb	NTB driver bug fixes to address a missed call to pci_enable_msix,	2013-11-26 11:15:12 -08:00
nubus	…
of	Merge remote-tracking branch 'grant/devicetree/merge' into dt-fixes	2013-12-30 12:09:47 -06:00
oprofile	…
parisc	…
parport	Kconfig cleanups for v3.13	2013-11-15 14:05:15 -08:00
pci	Merge branch 'drm-intel-next' of git://people.freedesktop.org/~danvet/drm-intel into drm-next	2014-01-20 10:21:54 +10:00
pcmcia	DeviceTree updates for 3.13. This is a bit larger pull request than	2013-11-12 16:52:17 +09:00
phy	phy: kconfig: add depends on "USB_PHY" to OMAP_USB2 and TWL4030_USB	2013-12-10 12:53:30 -08:00
pinctrl	Revert "ACPI: Add BayTrail SoC GPIO and LPSS ACPI IDs"	2014-01-18 14:04:58 +01:00
platform	sony-laptop: do not scribble keyboard backlight registers on resume	2013-11-26 13:03:36 +09:00
pnp	PNP: fix restoring devices after hibernation	2013-12-05 02:01:55 +01:00
power	max17042_battery: Fix build errors caused by missing REGMAP_I2C config	2013-12-01 14:25:03 -08:00
powercap	powercap / RAPL: add support for ValleyView Soc	2013-12-22 01:27:51 +01:00
pps	drivers/pps/clients/pps-gpio.c: remove redundant of_match_ptr	2013-11-13 12:09:35 +09:00
ps3	…
ptp	…
pwm	pwm: samsung: Fix kernel warning while unexporting a channel	2013-11-01 11:17:57 +01:00
rapidio	…
regulator	mfd: s2mps11: Fix build after regmap field rename in sec-core.c	2013-12-16 11:30:39 +00:00
remoteproc	virtio_ring: change host notification API	2013-10-29 11:28:11 +10:30
reset	…
rpmsg	…
rtc	mfd/rtc: s5m: fix register updating by adding regmap for RTC	2013-12-12 18:19:26 -08:00
s390	s390/3270: fix allocation of tty3270_screen structure	2013-12-18 17:35:30 +01:00
sbus	…
scsi	qla2xxx: Fix scsi_host leak on qlt_lport_register callback failure	2013-12-19 14:50:17 -08:00
sfi	…
sh	…
sn	…
spi	spi: tegra: checking for ERR_PTR instead of NULL	2013-12-16 09:51:58 -07:00
ssb	…
staging	Merge branch 'drm-intel-next' of git://people.freedesktop.org/~danvet/drm-intel into drm-next	2014-01-20 10:21:54 +10:00
target	target: Remove extra percpu_ref_init	2013-12-19 14:49:54 -08:00
tc	…
thermal	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-11-19 15:50:47 -08:00
tty	Merge branch 'drm-intel-next' of git://people.freedesktop.org/~danvet/drm-intel into drm-next	2014-01-20 10:21:54 +10:00
uio	uio: we cannot mmap unaligned page contents	2013-12-02 11:50:37 -08:00
usb	Merge branch 'drm-intel-next' of git://people.freedesktop.org/~danvet/drm-intel into drm-next	2014-01-20 10:21:54 +10:00
uwb	Driver Core / sysfs patches for 3.13-rc1	2013-11-07 11:42:15 +09:00
vfio	…
vhost	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
video	omapdrm patches for 3.14	2014-01-29 09:37:47 +10:00
virt	…
virtio	virtio_balloon: update_balloon_size(): update correct field	2013-12-05 13:12:39 +10:30
vlynq	…
vme	…
w1	drivers/w1/masters/w1-gpio.c: use dev_get_platdata()	2013-11-15 09:32:21 +09:00
watchdog	sc1200_wdt: Fix oops	2013-12-10 08:48:15 +01:00
xen	Bug-fixes:	2013-12-20 09:34:54 -08:00
zorro	…
Kconfig	ACPI and power management updates for 3.13-rc1	2013-11-14 13:41:48 +09:00
Makefile	ACPI and power management updates for 3.13-rc1	2013-11-14 13:41:48 +09:00