Merge android-4.4.112 (5f6325b) into msm-4.4

* refs/heads/tmp-5f6325b
  Linux 4.4.112
  selftests/x86: Add test_vsyscall
  x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm
  x86/alternatives: Fix optimize_nops() checking
  sysfs/cpu: Fix typos in vulnerability documentation
  x86/cpu: Implement CPU vulnerabilites sysfs functions
  sysfs/cpu: Add vulnerability folder
  x86/cpu: Merge bugs.c and bugs_64.c
  x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]
  x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN
  x86/cpufeatures: Add X86_BUG_CPU_INSECURE
  x86/cpufeatures: Make CPU bugs sticky
  x86/cpu: Factor out application of forced CPU caps
  x86/Documentation: Add PTI description
  e1000e: Fix e1000_check_for_copper_link_ich8lan return value.
  uas: ignore UAS for Norelsys NS1068(X) chips
  Bluetooth: Prevent stack info leak from the EFS element.
  staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl
  usbip: remove kernel addresses from usb device and urb debug msgs
  USB: fix usbmon BUG trigger
  usb: misc: usb3503: make sure reset is low for at least 100us
  USB: serial: cp210x: add new device ID ELV ALC 8xxx
  USB: serial: cp210x: add IDs for LifeScan OneTouch Verio IQ
  target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK
  iscsi-target: Make TASK_REASSIGN use proper se_cmd->cmd_kref
  bpf, array: fix overflow in max_entries and undefined behavior in index_mask
  bpf: prevent out-of-bounds speculation
  bpf: adjust insn_aux_data when patching insns
  bpf: refactor fixup_bpf_calls()
  bpf: move fixup_bpf_calls() function
  bpf: don't (ab)use instructions to store state
  bpf: add bpf_patch_insn_single helper
  kaiser: Set _PAGE_NX only if supported
  drm/vmwgfx: Potential off by one in vmw_view_add()
  KVM: x86: Add memory barrier on vmcs field lookup
  x86/microcode/intel: Extend BDW late-loading with a revision check
  rbd: set max_segments to USHRT_MAX
  crypto: algapi - fix NULL dereference in crypto_remove_spawns()
  ipv6: fix possible mem leaks in ipv6_make_skb()
  net: stmmac: enable EEE in MII, GMII or RGMII only
  sh_eth: fix SH7757 GEther initialization
  sh_eth: fix TSU resource handling
  RDS: null pointer dereference in rds_atomic_free_op
  RDS: Heap OOB write in rds_message_alloc_sgs()
  net: core: fix module type in sock_diag_bind
  ip6_tunnel: disable dst caching if tunnel is dual-stack
  8021q: fix a memory leak for VLAN 0 device
  x86/pti/efi: broken conversion from efi to kernel page table
  Revert "userfaultfd: selftest: vm: allow to build in vm/ directory"
  xhci: Fix ring leak in failure path of xhci_alloc_virt_device()
  sysrq: Fix warning in sysrq generated crash.
  hwrng: core - sleep interruptible in read
  x86/mm/pat, /dev/mem: Remove superfluous error message
  cx82310_eth: use skb_cow_head() to deal with cloned skbs
  smsc75xx: use skb_cow_head() to deal with cloned skbs
  sr9700: use skb_cow_head() to deal with cloned skbs
  lan78xx: use skb_cow_head() to deal with cloned skbs
  r8152: adjust ALDPS function
  r8152: use test_and_clear_bit
  r8152: fix the wake event
  usb: musb: ux500: Fix NULL pointer dereference at system PM
  usbvision fix overflow of interfaces array
  locking/mutex: Allow next waiter lockless wakeup
  futex: Replace barrier() in unqueue_me() with READ_ONCE()
  locks: don't check for race with close when setting OFD lock
  zswap: don't param_set_charp while holding spinlock
  mm/zswap: use workqueue to destroy pool
  mm/page-writeback: fix dirty_ratelimit calculation
  mm/compaction: pass only pageblock aligned range to pageblock_pfn_to_page
  mm/compaction: fix invalid free_pfn and compact_cached_free_pfn
  x86/acpi: Reduce code duplication in mp_override_legacy_irq()
  ALSA: aloop: Fix racy hw constraints adjustment
  ALSA: aloop: Fix inconsistent format due to incomplete rule
  ALSA: aloop: Release cable upon open error path
  ALSA: pcm: Allow aborting mutex lock at OSS read/write loops
  ALSA: pcm: Abort properly at pending signal in OSS read/write loops
  ALSA: pcm: Add missing error checks in OSS emulation plugin builder
  ALSA: pcm: Remove incorrect snd_BUG_ON() usages
  iommu/arm-smmu-v3: Don't free page table ops twice
  x86/acpi: Handle SCI interrupts above legacy space gracefully
  x86/vsdo: Fix build on PARAVIRT_CLOCK=y, KVM_GUEST=n
  kvm: vmx: Scrub hardware GPRs at VM-exit
  net/mac80211/debugfs.c: prevent build failure with CONFIG_UBSAN=y
  MIPS: Disallow outsized PTRACE_SETREGSET NT_PRFPREG regset accesses
  MIPS: Also verify sizeof `elf_fpreg_t' with PTRACE_SETREGSET
  MIPS: Fix an FCSR access API regression with NT_PRFPREG and MSA
  MIPS: Consistently handle buffer counter with PTRACE_SETREGSET
  MIPS: Guard against any partial write attempt with PTRACE_SETREGSET
  MIPS: Factor out NT_PRFPREG regset access helpers
  MIPS: Validate PR_SET_FP_MODE prctl(2) requests against the ABI of the task
  IB/srpt: Disable RDMA access by the initiator
  can: gs_usb: fix return value of the "set_bittiming" callback
  KVM: Fix stack-out-of-bounds read in write_mmio
  dm bufio: fix shrinker scans when (nr_to_scan < retain_target)
  fscrypt: updates on 4.15-rc4
  ANDROID: uid_sys_stats: fix the comment
  BACKPORT: optee: fix invalid of_node_put() in optee_driver_init()
  BACKPORT: tee: optee: sync with new naming of interrupts
  BACKPORT: tee: indicate privileged dev in gen_caps
  BACKPORT: tee: optee: interruptible RPC sleep
  BACKPORT: tee: optee: add const to tee_driver_ops and tee_desc structures
  BACKPORT: tee: tee_shm: Constify dma_buf_ops structures.
  BACKPORT: tee: add forward declaration for struct device
  BACKPORT: tee: optee: fix uninitialized symbol 'parg'
  BACKPORT: tee.txt: standardize document format
  BACKPORT: tee: add ARM_SMCCC dependency
  BACKPORT: selinux: nlmsgtab: add SOCK_DESTROY to the netlink mapping tables

Conflicts:
	security/selinux/nlmsgtab.c

Change-Id: I5770a565f39c321f2305f8228e41f822e3cd0625
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>

4 files changed, 90 insertions, 67 deletions

diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 33e72c809e50..494b7b533366 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -465,7 +465,6 @@ static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm,
 		v = snd_pcm_hw_param_last(pcm, params, var, dir);
 	else
 		v = snd_pcm_hw_param_first(pcm, params, var, dir);
-	snd_BUG_ON(v < 0);
 	return v;
 }
 
@@ -1370,8 +1369,11 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
 
 	if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
 		return tmp;
-	mutex_lock(&runtime->oss.params_lock);
 	while (bytes > 0) {
+		if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
+			tmp = -ERESTARTSYS;
+			break;
+		}
 		if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
 			tmp = bytes;
 			if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
@@ -1415,14 +1417,18 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
 			xfer += tmp;
 			if ((substream->f_flags & O_NONBLOCK) != 0 &&
 			    tmp != runtime->oss.period_bytes)
-				break;
+				tmp = -EAGAIN;
 		}
-	}
-	mutex_unlock(&runtime->oss.params_lock);
-	return xfer;
-
  err:
-	mutex_unlock(&runtime->oss.params_lock);
+		mutex_unlock(&runtime->oss.params_lock);
+		if (tmp < 0)
+			break;
+		if (signal_pending(current)) {
+			tmp = -ERESTARTSYS;
+			break;
+		}
+		tmp = 0;
+	}
 	return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
 }
 
@@ -1470,8 +1476,11 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
 
 	if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
 		return tmp;
-	mutex_lock(&runtime->oss.params_lock);
 	while (bytes > 0) {
+		if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
+			tmp = -ERESTARTSYS;
+			break;
+		}
 		if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
 			if (runtime->oss.buffer_used == 0) {
 				tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
@@ -1502,12 +1511,16 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
 			bytes -= tmp;
 			xfer += tmp;
 		}
-	}
-	mutex_unlock(&runtime->oss.params_lock);
-	return xfer;
-
  err:
-	mutex_unlock(&runtime->oss.params_lock);
+		mutex_unlock(&runtime->oss.params_lock);
+		if (tmp < 0)
+			break;
+		if (signal_pending(current)) {
+			tmp = -ERESTARTSYS;
+			break;
+		}
+		tmp = 0;
+	}
 	return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
 }
 
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
index 727ac44d39f4..a84a1d3d23e5 100644
--- a/sound/core/oss/pcm_plugin.c
+++ b/sound/core/oss/pcm_plugin.c
@@ -591,18 +591,26 @@ snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *plug, st
 	snd_pcm_sframes_t frames = size;
 
 	plugin = snd_pcm_plug_first(plug);
-	while (plugin && frames > 0) {
+	while (plugin) {
+		if (frames <= 0)
+			return frames;
 		if ((next = plugin->next) != NULL) {
 			snd_pcm_sframes_t frames1 = frames;
-			if (plugin->dst_frames)
+			if (plugin->dst_frames) {
 				frames1 = plugin->dst_frames(plugin, frames);
+				if (frames1 <= 0)
+					return frames1;
+			}
 			if ((err = next->client_channels(next, frames1, &dst_channels)) < 0) {
 				return err;
 			}
 			if (err != frames1) {
 				frames = err;
-				if (plugin->src_frames)
+				if (plugin->src_frames) {
 					frames = plugin->src_frames(plugin, frames1);
+					if (frames <= 0)
+						return frames;
+				}
 			}
 		} else
 			dst_channels = NULL;
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index db2c1cdd93b7..78d7c7c6058d 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1668,7 +1668,7 @@ int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm,
 		return changed;
 	if (params->rmask) {
 		int err = snd_pcm_hw_refine(pcm, params);
-		if (snd_BUG_ON(err < 0))
+		if (err < 0)
 			return err;
 	}
 	return snd_pcm_hw_param_value(params, var, dir);
@@ -1715,7 +1715,7 @@ int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm,
 		return changed;
 	if (params->rmask) {
 		int err = snd_pcm_hw_refine(pcm, params);
-		if (snd_BUG_ON(err < 0))
+		if (err < 0)
 			return err;
 	}
 	return snd_pcm_hw_param_value(params, var, dir);
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
index 54f348a4fb78..cbd20cb8ca11 100644
--- a/sound/drivers/aloop.c
+++ b/sound/drivers/aloop.c
@@ -39,6 +39,7 @@
 #include <sound/core.h>
 #include <sound/control.h>
 #include <sound/pcm.h>
+#include <sound/pcm_params.h>
 #include <sound/info.h>
 #include <sound/initval.h>
 
@@ -305,19 +306,6 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd)
 	return 0;
 }
 
-static void params_change_substream(struct loopback_pcm *dpcm,
-				    struct snd_pcm_runtime *runtime)
-{
-	struct snd_pcm_runtime *dst_runtime;
-
-	if (dpcm == NULL || dpcm->substream == NULL)
-		return;
-	dst_runtime = dpcm->substream->runtime;
-	if (dst_runtime == NULL)
-		return;
-	dst_runtime->hw = dpcm->cable->hw;
-}
-
 static void params_change(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
@@ -329,10 +317,6 @@ static void params_change(struct snd_pcm_substream *substream)
 	cable->hw.rate_max = runtime->rate;
 	cable->hw.channels_min = runtime->channels;
 	cable->hw.channels_max = runtime->channels;
-	params_change_substream(cable->streams[SNDRV_PCM_STREAM_PLAYBACK],
-				runtime);
-	params_change_substream(cable->streams[SNDRV_PCM_STREAM_CAPTURE],
-				runtime);
 }
 
 static int loopback_prepare(struct snd_pcm_substream *substream)
@@ -620,26 +604,29 @@ static unsigned int get_cable_index(struct snd_pcm_substream *substream)
 static int rule_format(struct snd_pcm_hw_params *params,
 		       struct snd_pcm_hw_rule *rule)
 {
+	struct loopback_pcm *dpcm = rule->private;
+	struct loopback_cable *cable = dpcm->cable;
+	struct snd_mask m;
 
-	struct snd_pcm_hardware *hw = rule->private;
-	struct snd_mask *maskp = hw_param_mask(params, rule->var);
-
-	maskp->bits[0] &= (u_int32_t)hw->formats;
-	maskp->bits[1] &= (u_int32_t)(hw->formats >> 32);
-	memset(maskp->bits + 2, 0, (SNDRV_MASK_MAX-64) / 8); /* clear rest */
-	if (! maskp->bits[0] && ! maskp->bits[1])
-		return -EINVAL;
-	return 0;
+	snd_mask_none(&m);
+	mutex_lock(&dpcm->loopback->cable_lock);
+	m.bits[0] = (u_int32_t)cable->hw.formats;
+	m.bits[1] = (u_int32_t)(cable->hw.formats >> 32);
+	mutex_unlock(&dpcm->loopback->cable_lock);
+	return snd_mask_refine(hw_param_mask(params, rule->var), &m);
 }
 
 static int rule_rate(struct snd_pcm_hw_params *params,
 		     struct snd_pcm_hw_rule *rule)
 {
-	struct snd_pcm_hardware *hw = rule->private;
+	struct loopback_pcm *dpcm = rule->private;
+	struct loopback_cable *cable = dpcm->cable;
 	struct snd_interval t;
 
-        t.min = hw->rate_min;
-        t.max = hw->rate_max;
+	mutex_lock(&dpcm->loopback->cable_lock);
+	t.min = cable->hw.rate_min;
+	t.max = cable->hw.rate_max;
+	mutex_unlock(&dpcm->loopback->cable_lock);
         t.openmin = t.openmax = 0;
         t.integer = 0;
 	return snd_interval_refine(hw_param_interval(params, rule->var), &t);
@@ -648,22 +635,44 @@ static int rule_rate(struct snd_pcm_hw_params *params,
 static int rule_channels(struct snd_pcm_hw_params *params,
 			 struct snd_pcm_hw_rule *rule)
 {
-	struct snd_pcm_hardware *hw = rule->private;
+	struct loopback_pcm *dpcm = rule->private;
+	struct loopback_cable *cable = dpcm->cable;
 	struct snd_interval t;
 
-        t.min = hw->channels_min;
-        t.max = hw->channels_max;
+	mutex_lock(&dpcm->loopback->cable_lock);
+	t.min = cable->hw.channels_min;
+	t.max = cable->hw.channels_max;
+	mutex_unlock(&dpcm->loopback->cable_lock);
         t.openmin = t.openmax = 0;
         t.integer = 0;
 	return snd_interval_refine(hw_param_interval(params, rule->var), &t);
 }
 
+static void free_cable(struct snd_pcm_substream *substream)
+{
+	struct loopback *loopback = substream->private_data;
+	int dev = get_cable_index(substream);
+	struct loopback_cable *cable;
+
+	cable = loopback->cables[substream->number][dev];
+	if (!cable)
+		return;
+	if (cable->streams[!substream->stream]) {
+		/* other stream is still alive */
+		cable->streams[substream->stream] = NULL;
+	} else {
+		/* free the cable */
+		loopback->cables[substream->number][dev] = NULL;
+		kfree(cable);
+	}
+}
+
 static int loopback_open(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct loopback *loopback = substream->private_data;
 	struct loopback_pcm *dpcm;
-	struct loopback_cable *cable;
+	struct loopback_cable *cable = NULL;
 	int err = 0;
 	int dev = get_cable_index(substream);
 
@@ -682,7 +691,6 @@ static int loopback_open(struct snd_pcm_substream *substream)
 	if (!cable) {
 		cable = kzalloc(sizeof(*cable), GFP_KERNEL);
 		if (!cable) {
-			kfree(dpcm);
 			err = -ENOMEM;
 			goto unlock;
 		}
@@ -700,19 +708,19 @@ static int loopback_open(struct snd_pcm_substream *substream)
 	/* are cached -> they do not reflect the actual state */
 	err = snd_pcm_hw_rule_add(runtime, 0,
 				  SNDRV_PCM_HW_PARAM_FORMAT,
-				  rule_format, &runtime->hw,
+				  rule_format, dpcm,
 				  SNDRV_PCM_HW_PARAM_FORMAT, -1);
 	if (err < 0)
 		goto unlock;
 	err = snd_pcm_hw_rule_add(runtime, 0,
 				  SNDRV_PCM_HW_PARAM_RATE,
-				  rule_rate, &runtime->hw,
+				  rule_rate, dpcm,
 				  SNDRV_PCM_HW_PARAM_RATE, -1);
 	if (err < 0)
 		goto unlock;
 	err = snd_pcm_hw_rule_add(runtime, 0,
 				  SNDRV_PCM_HW_PARAM_CHANNELS,
-				  rule_channels, &runtime->hw,
+				  rule_channels, dpcm,
 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
 	if (err < 0)
 		goto unlock;
@@ -724,6 +732,10 @@ static int loopback_open(struct snd_pcm_substream *substream)
 	else
 		runtime->hw = cable->hw;
  unlock:
+	if (err < 0) {
+		free_cable(substream);
+		kfree(dpcm);
+	}
 	mutex_unlock(&loopback->cable_lock);
 	return err;
 }
@@ -732,20 +744,10 @@ static int loopback_close(struct snd_pcm_substream *substream)
 {
 	struct loopback *loopback = substream->private_data;
 	struct loopback_pcm *dpcm = substream->runtime->private_data;
-	struct loopback_cable *cable;
-	int dev = get_cable_index(substream);
 
 	loopback_timer_stop(dpcm);
 	mutex_lock(&loopback->cable_lock);
-	cable = loopback->cables[substream->number][dev];
-	if (cable->streams[!substream->stream]) {
-		/* other stream is still alive */
-		cable->streams[substream->stream] = NULL;
-	} else {
-		/* free the cable */
-		loopback->cables[substream->number][dev] = NULL;
-		kfree(cable);
-	}
+	free_cable(substream);
 	mutex_unlock(&loopback->cable_lock);
 	return 0;
 }