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[PATCH 4.4 000/146] 4.4.16-stable review

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  [PATCH 4.4 000/146] 4.4.16-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:10 +0200
    [PATCH 4.4 060/146] iommu/amd: Fix unity mapping initialization race Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 134/146] ovl: verify upper dentry in ovl_remove_and_whiteout() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 139/146] cifs: dynamic allocation of ntlmssp blob Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 145/146] drm/i915: Revert DisplayPort fast link training feature Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 097/146] iio: Fix error handling in iio_trigger_attach_poll_func Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 054/146] HID: hiddev: validate num_values for HIDIOCGUSAGES, HIDIOCSUSAGES commands Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 116/146] ALSA: dummy: Fix a use-after-free at closing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 096/146] xen/balloon: Fix declared-but-not-defined warning Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 146/146] ovl: verify upper dentry before unlink and rename Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 143/146] tmpfs: dont undo fallocate past its last page Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 144/146] tmpfs: fix regression hang in fallocate undo Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 072/146] drm/amdkfd: unbind only existing processes Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 4.4 105/146] iio: hudmidity: hdc100x: fix incorrect shifting and scaling Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 119/146] ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 141/146] xen/acpi: allow xen-acpi-processor driver to load on Xen 4.7 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 102/146] iio: proximity: as3935: fix buffer stack trashing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 110/146] iio:ad7266: Fix probe deferral for vref Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 132/146] ARM: mvebu: fix HW I/O coherency related deadlocks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 099/146] iio: light apds9960: Add the missing dev.parent Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 137/146] 53c700: fix BUG on untagged commands Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 138/146] Fix reconnect to not defer smb3 session reconnect long after socket reconnect Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 142/146] crypto: qat - make qat_asym_algs.o depend on asn1 headers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 129/146] ALSA: hda: add AMD Stoney PCI ID with proper driver caps Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 123/146] ALSA: hda - Add PCI ID for Kabylake-H Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 117/146] ALSA: hda - Fix the headset mic jack detection on Dell machine Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 135/146] scsi: fix race between simultaneous decrements of ->host_failed Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 100/146] iio: proximity: as3935: correct IIO_CHAN_INFO_RAW output Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 121/146] ALSA: timer: Fix negative queue usage by racy accesses Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 062/146] ipmi: Remove smi_msg from waiting_rcv_msgs list before handle_one_recv_msg() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 120/146] ALSA: echoaudio: Fix memory allocation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 064/146] vfs: add d_real_inode() helper Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 106/146] staging: iio: accel: fix error check Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to overlay inode Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
      Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to  overlay inode Eryu Guan <eguan@redhat.com> - 2016-08-03 09:40 +0200
        Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to  overlay inode Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-08-03 10:00 +0200
          Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to  overlay inode Eryu Guan <eguan@redhat.com> - 2016-08-03 10:20 +0200
            Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to  overlay inode Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-08-03 13:20 +0200
    [PATCH 4.4 090/146] drm/vmwgfx: Work around mode set failure in 2D VMs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 130/146] ARM: sunxi/dt: make the CHIP inherit from allwinner,sun5i-a13 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 126/146] ALSA: pcm: Free chmap at PCM free callback, too Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 103/146] iio: humidity: hdc100x: correct humidity integration time mask Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 122/146] ALSA: hda/realtek: Add Lenovo L460 to docking unit fixup Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 124/146] ALSA: hda - fix read before array start Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 128/146] ALSA: hda - fix use-after-free after module unload Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 104/146] iio: humidity: hdc100x: fix IIO_TEMP channel reporting Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 140/146] File names with trailing period or space need special case conversion Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 111/146] tty: vt: Fix soft lockup in fbcon cursor blink timer. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 118/146] ALSA: hda / realtek - add two more Thinkpad IDs (5050,5053) for tpt460 fixup Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 127/146] ALSA: ctl: Stop notification after disconnection Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 131/146] ARM: dts: armada-38x: fix MBUS_ID for crypto SRAM on Armada 385 Linksys Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 101/146] iio: proximity: as3935: remove triggered buffer processing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 125/146] ALSA: hda/realtek - add new pin definition in alc225 pin quirk table Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 136/146] s390: fix test_fp_ctl inline assembly contraints Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:30 +0200
    [PATCH 4.4 112/146] tty/vt/keyboard: fix OOB access in do_compute_shiftstate() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:40 +0200
    [PATCH 4.4 063/146] arm64: Rework valid_user_regs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:40 +0200
    [PATCH 4.4 109/146] iio:ad7266: Fix support for optional regulators Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:40 +0200
    [PATCH 4.4 108/146] iio:ad7266: Fix broken regulator error handling Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:30 +0200
    [PATCH 4.4 079/146] drm/nouveau: fix for disabled fbdev emulation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 078/146] drm/nouveau/fbcon: fix out-of-bounds memory accesses Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 022/146] locking/static_key: Fix concurrent static_key_slow_inc() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 083/146] drm/i915: Update ifdeffery for mutex->owner Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 059/146] iommu/vt-d: Enable QI on all IOMMUs before setting root entry Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 093/146] drm/vmwgfx: Fix error paths when mapping framebuffer Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 107/146] iio: accel: kxsd9: fix the usage of spi_w8r8() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 098/146] iio:st_pressure: fix sampling gains (bring inline with ABI) Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 089/146] drm/vmwgfx: Add an option to change assumed FB bpp Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 058/146] iommu/arm-smmu: Wire up map_sg for arm-smmu-v3 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 088/146] drm/ttm: Make ttm_bo_mem_compat available Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 086/146] drm: make drm_atomic_set_mode_prop_for_crtc() more reliable Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 061/146] drm/mgag200: Black screen fix for G200e rev 4 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 087/146] drm: atmel-hlcdc: actually disable scaling when no scaling is required Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 092/146] drm/vmwgfx: Delay pinning fbdev framebuffer until after mode set Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 091/146] drm/vmwgfx: Check pin count before attempting to move a buffer Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 085/146] drm: add missing drm_mode_set_crtcinfo call Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 095/146] perf/x86: Fix undefined shift on 32-bit kernels Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 077/146] drm/nouveau/gr/gf100-: update sm error decoding from gk20a nvgpu headers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 055/146] HID: multitouch: enable palm rejection for Windows Precision Touchpad Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 080/146] drm/nouveau/disp/sor/gf119: select correct sor when poking training pattern Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:40 +0200
    [PATCH 4.4 066/146] percpu: fix synchronization between chunk->map_extend_work and chunk destruction Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 068/146] btrfs: account for non-CoWd blocks in btrfs_abort_transaction Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 023/146] x86, build: copy ldlinux.c32 to image.iso Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 065/146] af_unix: fix hard linked sockets on overlay Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 019/146] of: irq: fix of_irq_get[_byname]() kernel-doc Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 073/146] drm/amdkfd: destroy dbgmgr in notifier release Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 075/146] virtio_balloon: fix PFN format for virtio-1 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 018/146] of: fix autoloading due to broken modalias with no compatible Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 074/146] drm/dp/mst: Always clear proposed vcpi table for port. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 056/146] tracing: Handle NULL formats in hold_module_trace_bprintk_format() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 014/146] usb: common: otg-fsm: add license to usb-otg-fsm Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 020/146] locking/ww_mutex: Report recursive ww_mutex locking early Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 070/146] drm/amdgpu/gfx7: fix broken condition check Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 021/146] locking/qspinlock: Fix spin_unlock_wait() some more Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 057/146] base: make module_create_drivers_dir race-free Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 076/146] drm/nouveau/disp/sor/gf119: both links use the same training register Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 067/146] percpu: fix synchronization between synchronous map extension and chunk destruction Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 4.4 069/146] drm/radeon: fix asic initialization for virtualized environments Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    Re: [PATCH 4.4 000/146] 4.4.16-stable review Shuah Khan <shuah.kh@samsung.com> - 2016-07-26 04:10 +0200
    Re: [PATCH 4.4 000/146] 4.4.16-stable review Guenter Roeck <linux@roeck-us.net> - 2016-07-26 16:00 +0200
    Re: [PATCH 4.4 000/146] 4.4.16-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-27 06:50 +0200

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#1449916 — [PATCH 4.4 137/146] 53c700: fix BUG on untagged commands

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: James Bottomley <jejb@linux.vnet.ibm.com>

commit 8beb330044d0d1878c7b92290e91c0b889e92633 upstream.

The untagged command case in the 53c700 driver has been broken since
host wide tags were enabled because the replaced scsi_find_tag()
function had a special case for the tag value SCSI_NO_TAG to retrieve
sdev->current_cmnd.  The replacement function scsi_host_find_tag() has
no such special case and returns NULL causing untagged commands to
trigger a BUG() in the driver.  Inspection shows that the 53c700 is the
only driver using this SCSI_NO_TAG case, so a local fix in the driver
suffices to fix this problem globally.

Fixes: 64d513ac31b - "scsi: use host wide tags by default"
Reported-by: Helge Deller <deller@gmx.de>
Tested-by: Helge Deller <deller@gmx.de>
Signed-off-by: James Bottomley <jejb@linux.vnet.ibm.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/53c700.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/scsi/53c700.c
+++ b/drivers/scsi/53c700.c
@@ -1122,7 +1122,7 @@ process_script_interrupt(__u32 dsps, __u
 		} else {
 			struct scsi_cmnd *SCp;
 
-			SCp = scsi_host_find_tag(SDp->host, SCSI_NO_TAG);
+			SCp = SDp->current_cmnd;
 			if(unlikely(SCp == NULL)) {
 				sdev_printk(KERN_ERR, SDp,
 					"no saved request for untagged cmd\n");
@@ -1826,7 +1826,7 @@ NCR_700_queuecommand_lck(struct scsi_cmn
 		       slot->tag, slot);
 	} else {
 		slot->tag = SCSI_NO_TAG;
-		/* must populate current_cmnd for scsi_host_find_tag to work */
+		/* save current command for reselection */
 		SCp->device->current_cmnd = SCp;
 	}
 	/* sanity check: some of the commands generated by the mid-layer

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#1449917 — [PATCH 4.4 138/146] Fix reconnect to not defer smb3 session reconnect long after socket reconnect

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Steve French <smfrench@gmail.com>

commit 4fcd1813e6404dd4420c7d12fb483f9320f0bf93 upstream.

Azure server blocks clients that open a socket and don't do anything on it.
In our reconnect scenarios, we can reconnect the tcp session and
detect the socket is available but we defer the negprot and SMB3 session
setup and tree connect reconnection until the next i/o is requested, but
this looks suspicous to some servers who expect SMB3 negprog and session
setup soon after a socket is created.

In the echo thread, reconnect SMB3 sessions and tree connections
that are disconnected.  A later patch will replay persistent (and
resilient) handle opens.

Signed-off-by: Steve French <steve.french@primarydata.com>
Acked-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/cifs/connect.c |    4 +++-
 fs/cifs/smb2pdu.c |   27 +++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -425,7 +425,9 @@ cifs_echo_request(struct work_struct *wo
 	 * server->ops->need_neg() == true. Also, no need to ping if
 	 * we got a response recently.
 	 */
-	if (!server->ops->need_neg || server->ops->need_neg(server) ||
+
+	if (server->tcpStatus == CifsNeedReconnect ||
+	    server->tcpStatus == CifsExiting || server->tcpStatus == CifsNew ||
 	    (server->ops->can_echo && !server->ops->can_echo(server)) ||
 	    time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
 		goto requeue_echo;
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1820,6 +1820,33 @@ SMB2_echo(struct TCP_Server_Info *server
 
 	cifs_dbg(FYI, "In echo request\n");
 
+	if (server->tcpStatus == CifsNeedNegotiate) {
+		struct list_head *tmp, *tmp2;
+		struct cifs_ses *ses;
+		struct cifs_tcon *tcon;
+
+		cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n");
+		spin_lock(&cifs_tcp_ses_lock);
+		list_for_each(tmp, &server->smb_ses_list) {
+			ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
+			list_for_each(tmp2, &ses->tcon_list) {
+				tcon = list_entry(tmp2, struct cifs_tcon,
+						  tcon_list);
+				/* add check for persistent handle reconnect */
+				if (tcon && tcon->need_reconnect) {
+					spin_unlock(&cifs_tcp_ses_lock);
+					rc = smb2_reconnect(SMB2_ECHO, tcon);
+					spin_lock(&cifs_tcp_ses_lock);
+				}
+			}
+		}
+		spin_unlock(&cifs_tcp_ses_lock);
+	}
+
+	/* if no session, renegotiate failed above */
+	if (server->tcpStatus == CifsNeedNegotiate)
+		return -EIO;
+
 	rc = small_smb2_init(SMB2_ECHO, NULL, (void **)&req);
 	if (rc)
 		return rc;

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#1449918 — [PATCH 4.4 142/146] crypto: qat - make qat_asym_algs.o depend on asn1 headers

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jan Stancek <jstancek@redhat.com>

commit 81dc0365cfa7bc7c08a0e44d9ee04964df782e19 upstream.

Parallel build can sporadically fail because asn1 headers may
not be built yet by the time qat_asym_algs.o is compiled:
  drivers/crypto/qat/qat_common/qat_asym_algs.c:55:32: fatal error: qat_rsapubkey-asn1.h: No such file or directory
   #include "qat_rsapubkey-asn1.h"

Signed-off-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/qat/qat_common/Makefile |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/crypto/qat/qat_common/Makefile
+++ b/drivers/crypto/qat/qat_common/Makefile
@@ -2,6 +2,7 @@ $(obj)/qat_rsapubkey-asn1.o: $(obj)/qat_
 			     $(obj)/qat_rsapubkey-asn1.h
 $(obj)/qat_rsaprivkey-asn1.o: $(obj)/qat_rsaprivkey-asn1.c \
 			      $(obj)/qat_rsaprivkey-asn1.h
+$(obj)/qat_asym_algs.o: $(obj)/qat_rsapubkey-asn1.h $(obj)/qat_rsaprivkey-asn1.h
 
 clean-files += qat_rsapubkey-asn1.c qat_rsapubkey-asn1.h
 clean-files += qat_rsaprivkey-asn1.c qat_rsapvivkey-asn1.h

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#1449919 — [PATCH 4.4 129/146] ALSA: hda: add AMD Stoney PCI ID with proper driver caps

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Awais Belal <awais_belal@mentor.com>

commit d716fb03f76411fc7e138692e33b749cada5c094 upstream.

This allows the device to correctly show up as ATI HDMI
rather than a generic one and allows the driver to use
the available caps.

Signed-off-by: Awais Belal <awais_belal@mentor.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/hda_intel.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2292,6 +2292,8 @@ static const struct pci_device_id azx_id
 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 	{ PCI_DEVICE(0x1002, 0x157a),
 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+	{ PCI_DEVICE(0x1002, 0x15b3),
+	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 	{ PCI_DEVICE(0x1002, 0x793b),
 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 	{ PCI_DEVICE(0x1002, 0x7919),

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#1449920 — [PATCH 4.4 123/146] ALSA: hda - Add PCI ID for Kabylake-H

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vinod Koul <vinod.koul@intel.com>

commit 6858107e78b4ecb9f244db814ffbdba1b5ce759b upstream.

Kabylake-H shows up as PCI ID 0xa2f0. We missed adding this
earlier with other KBL IDs.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/hda_intel.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -361,9 +361,10 @@ enum {
 #define IS_SKL_LP(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9d70)
 #define IS_KBL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa171)
 #define IS_KBL_LP(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9d71)
+#define IS_KBL_H(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa2f0)
 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
 #define IS_SKL_PLUS(pci) (IS_SKL(pci) || IS_SKL_LP(pci) || IS_BXT(pci)) || \
-			IS_KBL(pci) || IS_KBL_LP(pci)
+			IS_KBL(pci) || IS_KBL_LP(pci) || IS_KBL_H(pci)
 
 static char *driver_short_names[] = {
 	[AZX_DRIVER_ICH] = "HDA Intel",
@@ -2213,6 +2214,9 @@ static const struct pci_device_id azx_id
 	/* Kabylake-LP */
 	{ PCI_DEVICE(0x8086, 0x9d71),
 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
+	/* Kabylake-H */
+	{ PCI_DEVICE(0x8086, 0xa2f0),
+	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
 	/* Broxton-P(Apollolake) */
 	{ PCI_DEVICE(0x8086, 0x5a98),
 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },

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#1449921 — [PATCH 4.4 117/146] ALSA: hda - Fix the headset mic jack detection on Dell machine

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Woodrow Shen <woodrow.shen@gmail.com>

commit f83c32925d45926cd0e0f18bf28e6039116c4486 upstream.

The new Dell laptop with codec 3246 can't detect headset mic when
headset was inserted on the machine. So adding pin configurations
into quirk table makes headset mic work correctly.

Codec: Realtek ALC3246
Vendor Id: 0x10ec0256
Subsystem Id: 0x10280781

Signed-off-by: Woodrow Shen <woodrow.shen@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/patch_realtek.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5832,6 +5832,10 @@ static const struct snd_hda_pin_quirk al
 		{0x14, 0x90170120},
 		{0x21, 0x02211030}),
 	SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+		{0x12, 0x90a60170},
+		{0x14, 0x90170120},
+		{0x21, 0x02211030}),
+	SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
 		ALC256_STANDARD_PINS),
 	SND_HDA_PIN_QUIRK(0x10ec0280, 0x103c, "HP", ALC280_FIXUP_HP_GPIO4,
 		{0x12, 0x90a60130},

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#1449922 — [PATCH 4.4 135/146] scsi: fix race between simultaneous decrements of ->host_failed

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wei Fang <fangwei1@huawei.com>

commit 72d8c36ec364c82bf1bf0c64dfa1041cfaf139f7 upstream.

sas_ata_strategy_handler() adds the works of the ata error handler to
system_unbound_wq. This workqueue asynchronously runs work items, so the
ata error handler will be performed concurrently on different CPUs. In
this case, ->host_failed will be decreased simultaneously in
scsi_eh_finish_cmd() on different CPUs, and become abnormal.

It will lead to permanently inequality between ->host_failed and
->host_busy, and scsi error handler thread won't start running. IO
errors after that won't be handled.

Since all scmds must have been handled in the strategy handler, just
remove the decrement in scsi_eh_finish_cmd() and zero ->host_busy after
the strategy handler to fix this race.

Fixes: 50824d6c5657 ("[SCSI] libsas: async ata-eh")
Signed-off-by: Wei Fang <fangwei1@huawei.com>
Reviewed-by: James Bottomley <jejb@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 Documentation/scsi/scsi_eh.txt |    8 ++++++--
 drivers/ata/libata-eh.c        |    2 +-
 drivers/scsi/scsi_error.c      |    4 +++-
 3 files changed, 10 insertions(+), 4 deletions(-)

--- a/Documentation/scsi/scsi_eh.txt
+++ b/Documentation/scsi/scsi_eh.txt
@@ -263,19 +263,23 @@ scmd->allowed.
 
  3. scmd recovered
     ACTION: scsi_eh_finish_cmd() is invoked to EH-finish scmd
-	- shost->host_failed--
 	- clear scmd->eh_eflags
 	- scsi_setup_cmd_retry()
 	- move from local eh_work_q to local eh_done_q
     LOCKING: none
+    CONCURRENCY: at most one thread per separate eh_work_q to
+		 keep queue manipulation lockless
 
  4. EH completes
     ACTION: scsi_eh_flush_done_q() retries scmds or notifies upper
-	    layer of failure.
+	    layer of failure. May be called concurrently but must have
+	    a no more than one thread per separate eh_work_q to
+	    manipulate the queue locklessly
 	- scmd is removed from eh_done_q and scmd->eh_entry is cleared
 	- if retry is necessary, scmd is requeued using
           scsi_queue_insert()
 	- otherwise, scsi_finish_command() is invoked for scmd
+	- zero shost->host_failed
     LOCKING: queue or finish function performs appropriate locking
 
 
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -606,7 +606,7 @@ void ata_scsi_error(struct Scsi_Host *ho
 	ata_scsi_port_error_handler(host, ap);
 
 	/* finish or retry handled scmd's and clean up */
-	WARN_ON(host->host_failed || !list_empty(&eh_work_q));
+	WARN_ON(!list_empty(&eh_work_q));
 
 	DPRINTK("EXIT\n");
 }
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1127,7 +1127,6 @@ static int scsi_eh_action(struct scsi_cm
  */
 void scsi_eh_finish_cmd(struct scsi_cmnd *scmd, struct list_head *done_q)
 {
-	scmd->device->host->host_failed--;
 	scmd->eh_eflags = 0;
 	list_move_tail(&scmd->eh_entry, done_q);
 }
@@ -2226,6 +2225,9 @@ int scsi_error_handler(void *data)
 		else
 			scsi_unjam_host(shost);
 
+		/* All scmds have been handled */
+		shost->host_failed = 0;
+
 		/*
 		 * Note - if the above fails completely, the action is to take
 		 * individual devices offline and flush the queue of any

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#1449923 — [PATCH 4.4 100/146] iio: proximity: as3935: correct IIO_CHAN_INFO_RAW output

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matt Ranostay <mranostay@gmail.com>

commit 5138806f16c74c7cb8ac3e408a859c79eb7c9567 upstream.

IIO_CHAN_INFO_RAW was returning processed data which was incorrect.
This also adds the IIO_CHAN_INFO_SCALE value to convert to a processed value.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935 |    2 +-
 drivers/iio/proximity/as3935.c                           |   10 ++++++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

--- a/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
+++ b/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
@@ -1,4 +1,4 @@
-What		/sys/bus/iio/devices/iio:deviceX/in_proximity_raw
+What		/sys/bus/iio/devices/iio:deviceX/in_proximity_input
 Date:		March 2014
 KernelVersion:	3.15
 Contact:	Matt Ranostay <mranostay@gmail.com>
--- a/drivers/iio/proximity/as3935.c
+++ b/drivers/iio/proximity/as3935.c
@@ -72,7 +72,8 @@ static const struct iio_chan_spec as3935
 		.type           = IIO_PROXIMITY,
 		.info_mask_separate =
 			BIT(IIO_CHAN_INFO_RAW) |
-			BIT(IIO_CHAN_INFO_PROCESSED),
+			BIT(IIO_CHAN_INFO_PROCESSED) |
+			BIT(IIO_CHAN_INFO_SCALE),
 		.scan_index     = 0,
 		.scan_type = {
 			.sign           = 'u',
@@ -181,7 +182,12 @@ static int as3935_read_raw(struct iio_de
 		/* storm out of range */
 		if (*val == AS3935_DATA_MASK)
 			return -EINVAL;
-		*val *= 1000;
+
+		if (m == IIO_CHAN_INFO_PROCESSED)
+			*val *= 1000;
+		break;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 1000;
 		break;
 	default:
 		return -EINVAL;

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#1449924 — [PATCH 4.4 121/146] ALSA: timer: Fix negative queue usage by racy accesses

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@suse.de>

commit 3fa6993fef634e05d200d141a85df0b044572364 upstream.

The user timer tu->qused counter may go to a negative value when
multiple concurrent reads are performed since both the check and the
decrement of tu->qused are done in two individual locked contexts.
This results in bogus read outs, and the endless loop in the
user-space side.

The fix is to move the decrement of the tu->qused counter into the
same spinlock context as the zero-check of the counter.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/core/timer.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -1961,6 +1961,7 @@ static ssize_t snd_timer_user_read(struc
 
 		qhead = tu->qhead++;
 		tu->qhead %= tu->queue_size;
+		tu->qused--;
 		spin_unlock_irq(&tu->qlock);
 
 		if (tu->tread) {
@@ -1974,7 +1975,6 @@ static ssize_t snd_timer_user_read(struc
 		}
 
 		spin_lock_irq(&tu->qlock);
-		tu->qused--;
 		if (err < 0)
 			goto _error;
 		result += unit;

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#1449925 — [PATCH 4.4 062/146] ipmi: Remove smi_msg from waiting_rcv_msgs list before handle_one_recv_msg()

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Junichi Nomura <j-nomura@ce.jp.nec.com>

commit ae4ea9a2460c7fee2ae8feeb4dfe96f5f6c3e562 upstream.

Commit 7ea0ed2b5be8 ("ipmi: Make the message handler easier to use for
SMI interfaces") changed handle_new_recv_msgs() to call handle_one_recv_msg()
for a smi_msg while the smi_msg is still connected to waiting_rcv_msgs list.
That could lead to following list corruption problems:

1) low-level function treats smi_msg as not connected to list

  handle_one_recv_msg() could end up calling smi_send(), which
  assumes the msg is not connected to list.

  For example, the following sequence could corrupt list by
  doing list_add_tail() for the entry still connected to other list.

    handle_new_recv_msgs()
      msg = list_entry(waiting_rcv_msgs)
      handle_one_recv_msg(msg)
        handle_ipmb_get_msg_cmd(msg)
          smi_send(msg)
            spin_lock(xmit_msgs_lock)
            list_add_tail(msg)
            spin_unlock(xmit_msgs_lock)

2) race between multiple handle_new_recv_msgs() instances

  handle_new_recv_msgs() once releases waiting_rcv_msgs_lock before calling
  handle_one_recv_msg() then retakes the lock and list_del() it.

  If others call handle_new_recv_msgs() during the window shown below
  list_del() will be done twice for the same smi_msg.

  handle_new_recv_msgs()
    spin_lock(waiting_rcv_msgs_lock)
    msg = list_entry(waiting_rcv_msgs)
    spin_unlock(waiting_rcv_msgs_lock)
  |
  | handle_one_recv_msg(msg)
  |
    spin_lock(waiting_rcv_msgs_lock)
    list_del(msg)
    spin_unlock(waiting_rcv_msgs_lock)

Fixes: 7ea0ed2b5be8 ("ipmi: Make the message handler easier to use for SMI interfaces")
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
[Added a comment to describe why this works.]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Ye Feng <yefeng.yl@alibaba-inc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/ipmi/ipmi_msghandler.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -3819,6 +3819,7 @@ static void handle_new_recv_msgs(ipmi_sm
 	while (!list_empty(&intf->waiting_rcv_msgs)) {
 		smi_msg = list_entry(intf->waiting_rcv_msgs.next,
 				     struct ipmi_smi_msg, link);
+		list_del(&smi_msg->link);
 		if (!run_to_completion)
 			spin_unlock_irqrestore(&intf->waiting_rcv_msgs_lock,
 					       flags);
@@ -3828,11 +3829,14 @@ static void handle_new_recv_msgs(ipmi_sm
 		if (rv > 0) {
 			/*
 			 * To preserve message order, quit if we
-			 * can't handle a message.
+			 * can't handle a message.  Add the message
+			 * back at the head, this is safe because this
+			 * tasklet is the only thing that pulls the
+			 * messages.
 			 */
+			list_add(&smi_msg->link, &intf->waiting_rcv_msgs);
 			break;
 		} else {
-			list_del(&smi_msg->link);
 			if (rv == 0)
 				/* Message handled */
 				ipmi_free_smi_msg(smi_msg);

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#1449926 — [PATCH 4.4 120/146] ALSA: echoaudio: Fix memory allocation

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

commit 9c6795a9b3cbb56a9fbfaf43909c5c22999ba317 upstream.

'commpage_bak' is allocated with 'sizeof(struct echoaudio)' bytes.
We then copy 'sizeof(struct comm_page)' bytes in it.
On my system, smatch complains because one is 2960 and the other is 3072.

This would result in memory corruption or a oops.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/echoaudio/echoaudio.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -2200,11 +2200,11 @@ static int snd_echo_resume(struct device
 	u32 pipe_alloc_mask;
 	int err;
 
-	commpage_bak = kmalloc(sizeof(struct echoaudio), GFP_KERNEL);
+	commpage_bak = kmalloc(sizeof(*commpage), GFP_KERNEL);
 	if (commpage_bak == NULL)
 		return -ENOMEM;
 	commpage = chip->comm_page;
-	memcpy(commpage_bak, commpage, sizeof(struct comm_page));
+	memcpy(commpage_bak, commpage, sizeof(*commpage));
 
 	err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
 	if (err < 0) {

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#1449927 — [PATCH 4.4 064/146] vfs: add d_real_inode() helper

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Miklos Szeredi <mszeredi@redhat.com>

commit a118084432d642eeccb961c7c8cc61525a941fcb upstream.

Needed by the following fix.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/dcache.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -603,5 +603,17 @@ static inline struct inode *vfs_select_i
 	return inode;
 }
 
+/**
+ * d_real_inode - Return the real inode
+ * @dentry: The dentry to query
+ *
+ * If dentry is on an union/overlay, then return the underlying, real inode.
+ * Otherwise return d_inode().
+ */
+static inline struct inode *d_real_inode(struct dentry *dentry)
+{
+	return d_backing_inode(d_real(dentry));
+}
+
 
 #endif	/* __LINUX_DCACHE_H */

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#1449928 — [PATCH 4.4 106/146] staging: iio: accel: fix error check

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Luis de Bethencourt <luisbg@osg.samsung.com>

commit ef3149eb3ddb7f9125e11c90f8330e371b55cffd upstream.

sca3000_read_ctrl_reg() returns a negative number on failure, check for
this instead of zero.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/staging/iio/accel/sca3000_core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/iio/accel/sca3000_core.c
+++ b/drivers/staging/iio/accel/sca3000_core.c
@@ -595,7 +595,7 @@ static ssize_t sca3000_read_frequency(st
 		goto error_ret_mut;
 	ret = sca3000_read_ctrl_reg(st, SCA3000_REG_CTRL_SEL_OUT_CTRL);
 	mutex_unlock(&st->lock);
-	if (ret)
+	if (ret < 0)
 		goto error_ret;
 	val = ret;
 	if (base_freq > 0)

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#1449929 — [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to overlay inode

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vivek Goyal <vgoyal@redhat.com>

commit 07a2daab49c549a37b5b744cbebb6e3f445f12bc upstream.

Right now when a new overlay inode is created, we initialize overlay
inode's ->i_mode from underlying inode ->i_mode but we retain only
file type bits (S_IFMT) and discard permission bits.

This patch changes it and retains permission bits too. This should allow
overlay to do permission checks on overlay inode itself in task context.

[SzM] It also fixes clearing suid/sgid bits on write.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reported-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/overlayfs/inode.c     |    3 +--
 fs/overlayfs/overlayfs.h |    1 +
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -412,12 +412,11 @@ struct inode *ovl_new_inode(struct super
 	if (!inode)
 		return NULL;
 
-	mode &= S_IFMT;
-
 	inode->i_ino = get_next_ino();
 	inode->i_mode = mode;
 	inode->i_flags |= S_NOATIME | S_NOCMTIME;
 
+	mode &= S_IFMT;
 	switch (mode) {
 	case S_IFDIR:
 		inode->i_private = oe;
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -181,6 +181,7 @@ static inline void ovl_copyattr(struct i
 {
 	to->i_uid = from->i_uid;
 	to->i_gid = from->i_gid;
+	to->i_mode = from->i_mode;
 }
 
 /* dir.c */

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#1455664 — Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to overlay inode

On Mon, Jul 25, 2016 at 01:56:28PM -0700, Greg Kroah-Hartman wrote:
> 4.4-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Vivek Goyal <vgoyal@redhat.com>
> 
> commit 07a2daab49c549a37b5b744cbebb6e3f445f12bc upstream.
> 
> Right now when a new overlay inode is created, we initialize overlay
> inode's ->i_mode from underlying inode ->i_mode but we retain only
> file type bits (S_IFMT) and discard permission bits.
> 
> This patch changes it and retains permission bits too. This should allow
> overlay to do permission checks on overlay inode itself in task context.
> 
> [SzM] It also fixes clearing suid/sgid bits on write.

This patch introduced a hang when writing to suid file, fstests
generic/355 could reproduce the hang easily, it only failed the test
without this patch and didn't hang the kernel.

Should we skip it for now and wait for a further fix?

(The 4.6-stable tree faces the same question)

Thanks,
Eryu

> 
> Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
> Reported-by: Eryu Guan <eguan@redhat.com>
> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
> Fixes: 4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay")
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> 
> ---
>  fs/overlayfs/inode.c     |    3 +--
>  fs/overlayfs/overlayfs.h |    1 +
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> --- a/fs/overlayfs/inode.c
> +++ b/fs/overlayfs/inode.c
> @@ -412,12 +412,11 @@ struct inode *ovl_new_inode(struct super
>  	if (!inode)
>  		return NULL;
>  
> -	mode &= S_IFMT;
> -
>  	inode->i_ino = get_next_ino();
>  	inode->i_mode = mode;
>  	inode->i_flags |= S_NOATIME | S_NOCMTIME;
>  
> +	mode &= S_IFMT;
>  	switch (mode) {
>  	case S_IFDIR:
>  		inode->i_private = oe;
> --- a/fs/overlayfs/overlayfs.h
> +++ b/fs/overlayfs/overlayfs.h
> @@ -181,6 +181,7 @@ static inline void ovl_copyattr(struct i
>  {
>  	to->i_uid = from->i_uid;
>  	to->i_gid = from->i_gid;
> +	to->i_mode = from->i_mode;
>  }
>  
>  /* dir.c */
> 
> 

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#1455670 — Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to overlay inode

On Wed, Aug 03, 2016 at 03:36:44PM +0800, Eryu Guan wrote:
> On Mon, Jul 25, 2016 at 01:56:28PM -0700, Greg Kroah-Hartman wrote:
> > 4.4-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Vivek Goyal <vgoyal@redhat.com>
> > 
> > commit 07a2daab49c549a37b5b744cbebb6e3f445f12bc upstream.
> > 
> > Right now when a new overlay inode is created, we initialize overlay
> > inode's ->i_mode from underlying inode ->i_mode but we retain only
> > file type bits (S_IFMT) and discard permission bits.
> > 
> > This patch changes it and retains permission bits too. This should allow
> > overlay to do permission checks on overlay inode itself in task context.
> > 
> > [SzM] It also fixes clearing suid/sgid bits on write.
> 
> This patch introduced a hang when writing to suid file, fstests
> generic/355 could reproduce the hang easily, it only failed the test
> without this patch and didn't hang the kernel.
> 
> Should we skip it for now and wait for a further fix?

Does Linus's tree have the same problem?

> (The 4.6-stable tree faces the same question)

Are we just missing a patch to be applied here?

And this is already in the released stable kernels...

thanks,

greg k-h

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#1455687 — Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to overlay inode

On Wed, Aug 03, 2016 at 09:45:06AM +0200, Greg Kroah-Hartman wrote:
> On Wed, Aug 03, 2016 at 03:36:44PM +0800, Eryu Guan wrote:
> > On Mon, Jul 25, 2016 at 01:56:28PM -0700, Greg Kroah-Hartman wrote:
> > > 4.4-stable review patch.  If anyone has any objections, please let me know.
> > > 
> > > ------------------
> > > 
> > > From: Vivek Goyal <vgoyal@redhat.com>
> > > 
> > > commit 07a2daab49c549a37b5b744cbebb6e3f445f12bc upstream.
> > > 
> > > Right now when a new overlay inode is created, we initialize overlay
> > > inode's ->i_mode from underlying inode ->i_mode but we retain only
> > > file type bits (S_IFMT) and discard permission bits.
> > > 
> > > This patch changes it and retains permission bits too. This should allow
> > > overlay to do permission checks on overlay inode itself in task context.
> > > 
> > > [SzM] It also fixes clearing suid/sgid bits on write.
> > 
> > This patch introduced a hang when writing to suid file, fstests
> > generic/355 could reproduce the hang easily, it only failed the test
> > without this patch and didn't hang the kernel.
> > 
> > Should we skip it for now and wait for a further fix?
> 
> Does Linus's tree have the same problem?

Yes, 4.7 kernel hangs as well.

> 
> > (The 4.6-stable tree faces the same question)
> 
> Are we just missing a patch to be applied here?

AFAICT, no patch is available to fix it yet. But I've reported the bug
to Miklos (in RH bugzilla).

> 
> And this is already in the released stable kernels...

This patch is not in 4.7-rc7, it first appears in 4.7 kernel, seems like
the soak time is not long enough to let testings finish :) I finished my
4.7 kernel testing and identified the culprit this Monday.

Thanks,
Eryu

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#1455749 — Re: [PATCH 4.4 133/146] ovl: Copy up underlying inodes ->i_mode to overlay inode

On Wed, Aug 03, 2016 at 04:04:55PM +0800, Eryu Guan wrote:
> On Wed, Aug 03, 2016 at 09:45:06AM +0200, Greg Kroah-Hartman wrote:
> > On Wed, Aug 03, 2016 at 03:36:44PM +0800, Eryu Guan wrote:
> > > On Mon, Jul 25, 2016 at 01:56:28PM -0700, Greg Kroah-Hartman wrote:
> > > > 4.4-stable review patch.  If anyone has any objections, please let me know.
> > > > 
> > > > ------------------
> > > > 
> > > > From: Vivek Goyal <vgoyal@redhat.com>
> > > > 
> > > > commit 07a2daab49c549a37b5b744cbebb6e3f445f12bc upstream.
> > > > 
> > > > Right now when a new overlay inode is created, we initialize overlay
> > > > inode's ->i_mode from underlying inode ->i_mode but we retain only
> > > > file type bits (S_IFMT) and discard permission bits.
> > > > 
> > > > This patch changes it and retains permission bits too. This should allow
> > > > overlay to do permission checks on overlay inode itself in task context.
> > > > 
> > > > [SzM] It also fixes clearing suid/sgid bits on write.
> > > 
> > > This patch introduced a hang when writing to suid file, fstests
> > > generic/355 could reproduce the hang easily, it only failed the test
> > > without this patch and didn't hang the kernel.
> > > 
> > > Should we skip it for now and wait for a further fix?
> > 
> > Does Linus's tree have the same problem?
> 
> Yes, 4.7 kernel hangs as well.
> 
> > 
> > > (The 4.6-stable tree faces the same question)
> > 
> > Are we just missing a patch to be applied here?
> 
> AFAICT, no patch is available to fix it yet. But I've reported the bug
> to Miklos (in RH bugzilla).

Ok, thanks, just mark whatever fix you all come up with, with a stable
marking, and I will pick up the fix when it gets merged to Linus's tree.

thanks,

greg k-h

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#1449930 — [PATCH 4.4 090/146] drm/vmwgfx: Work around mode set failure in 2D VMs

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sinclair Yeh <syeh@vmware.com>

commit 7c20d213dd3cd6295bf9162730e7a368af957854 upstream.

In a low-memory 2D VM, fbdev can take up a large percentage of
available memory, making them unavailable for other DRM clients.

Since we do not take fbdev into account when filtering modes,
we end up claiming to support more modes than we actually do.

As a result, users get a black screen when setting a mode too
large for current available memory.  In a low-memory VM
configuration, users can get a black screen for a mode as low
as 1024x768.

The current mode filtering mechanism keys off of
SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB, i.e. the maximum amount
of surface memory we have.  Since this value is a performance
suggestion, not a hard limit, and since there should not be much
of a performance impact for a 2D VM, rather than filtering out
more modes, we will just allow ourselves to exceed the SVGA's
performance suggestion.

Also changed assumed bpp to 32 from 16 to make sure we can
actually support all the modes listed.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c |    7 +++++++
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c |    9 +--------
 2 files changed, 8 insertions(+), 8 deletions(-)

--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -703,6 +703,13 @@ static int vmw_driver_load(struct drm_de
 			vmw_read(dev_priv,
 				 SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);
 
+		/*
+		 * Workaround for low memory 2D VMs to compensate for the
+		 * allocation taken by fbdev
+		 */
+		if (!(dev_priv->capabilities & SVGA_CAP_3D))
+			mem_size *= 2;
+
 		dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
 		dev_priv->prim_bb_mem =
 			vmw_read(dev_priv,
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1538,14 +1538,7 @@ int vmw_du_connector_fill_modes(struct d
 		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
 	};
 	int i;
-	u32 assumed_bpp = 2;
-
-	/*
-	 * If using screen objects, then assume 32-bpp because that's what the
-	 * SVGA device is assuming
-	 */
-	if (dev_priv->active_display_unit == vmw_du_screen_object)
-		assumed_bpp = 4;
+	u32 assumed_bpp = 4;
 
 	if (dev_priv->assume_16bpp)
 		assumed_bpp = 2;

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#1449932 — [PATCH 4.4 130/146] ARM: sunxi/dt: make the CHIP inherit from allwinner,sun5i-a13

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Boris Brezillon <boris.brezillon@free-electrons.com>

commit 5fc39d347267bd029fcc9099c70e2fe2d53130e9 upstream.

The sun4i-timer driver registers its sched_clock only if the machine is
compatible with "allwinner,sun5i-a13", "allwinner,sun5i-a10s" or
"allwinner,sun4i-a10".
Add the missing "allwinner,sun5i-a13" string to the machine compatible.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: 465a225fb2af ("ARM: sun5i: Add C.H.I.P DTS")
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arm/boot/dts/sun5i-r8-chip.dts |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/dts/sun5i-r8-chip.dts
+++ b/arch/arm/boot/dts/sun5i-r8-chip.dts
@@ -52,7 +52,7 @@
 
 / {
 	model = "NextThing C.H.I.P.";
-	compatible = "nextthing,chip", "allwinner,sun5i-r8";
+	compatible = "nextthing,chip", "allwinner,sun5i-r8", "allwinner,sun5i-a13";
 
 	aliases {
 		i2c0 = &i2c0;

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