commit:     e9d499be84fbb62228440a8ca3efdd4b67a4dcaf
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Mar 24 12:06:47 2021 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Mar 24 12:06:47 2021 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=e9d499be

Linux patch 4.9.263

Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org>

 0000_README              |    4 +
 1262_linux-4.9.263.patch | 1110 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 1114 insertions(+)

diff --git a/0000_README b/0000_README
index fb6b98f..ee09e90 100644
--- a/0000_README
+++ b/0000_README
@@ -1091,6 +1091,10 @@ Patch:  1261_linux-4.9.262.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.9.262
 
+Patch:  1262_linux-4.9.263.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.9.263
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.

diff --git a/1262_linux-4.9.263.patch b/1262_linux-4.9.263.patch
new file mode 100644
index 0000000..fa3a50c
--- /dev/null
+++ b/1262_linux-4.9.263.patch
@@ -0,0 +1,1110 @@
+diff --git a/Makefile b/Makefile
+index be5eac0a12d37..80b265a383bb6 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 9
+-SUBLEVEL = 262
++SUBLEVEL = 263
+ EXTRAVERSION =
+ NAME = Roaring Lionus
+ 
+diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
+index f562ddbeb20c6..f39838d78976d 100644
+--- a/arch/x86/events/intel/ds.c
++++ b/arch/x86/events/intel/ds.c
+@@ -1473,7 +1473,7 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs 
*iregs)
+                */
+               if (!pebs_status && cpuc->pebs_enabled &&
+                       !(cpuc->pebs_enabled & (cpuc->pebs_enabled-1)))
+-                      pebs_status = cpuc->pebs_enabled;
++                      pebs_status = p->status = cpuc->pebs_enabled;
+ 
+               bit = find_first_bit((unsigned long *)&pebs_status,
+                                       x86_pmu.max_pebs_events);
+diff --git a/arch/x86/include/asm/processor.h 
b/arch/x86/include/asm/processor.h
+index 7aa9a9bd9d982..f606ef5989172 100644
+--- a/arch/x86/include/asm/processor.h
++++ b/arch/x86/include/asm/processor.h
+@@ -461,15 +461,6 @@ struct thread_struct {
+        */
+ };
+ 
+-/*
+- * Thread-synchronous status.
+- *
+- * This is different from the flags in that nobody else
+- * ever touches our thread-synchronous status, so we don't
+- * have to worry about atomic accesses.
+- */
+-#define TS_COMPAT             0x0002  /* 32bit syscall active (64BIT)*/
+-
+ /*
+  * Set IOPL bits in EFLAGS from given mask
+  */
+diff --git a/arch/x86/include/asm/thread_info.h 
b/arch/x86/include/asm/thread_info.h
+index 0438f7fbb3839..3ba5e2fce1718 100644
+--- a/arch/x86/include/asm/thread_info.h
++++ b/arch/x86/include/asm/thread_info.h
+@@ -221,10 +221,31 @@ static inline int arch_within_stack_frames(const void * 
const stack,
+ 
+ #endif
+ 
++/*
++ * Thread-synchronous status.
++ *
++ * This is different from the flags in that nobody else
++ * ever touches our thread-synchronous status, so we don't
++ * have to worry about atomic accesses.
++ */
++#define TS_COMPAT             0x0002  /* 32bit syscall active (64BIT)*/
++
++#ifndef __ASSEMBLY__
+ #ifdef CONFIG_COMPAT
+ #define TS_I386_REGS_POKED    0x0004  /* regs poked by 32-bit ptracer */
++#define TS_COMPAT_RESTART     0x0008
++
++#define arch_set_restart_data arch_set_restart_data
++
++static inline void arch_set_restart_data(struct restart_block *restart)
++{
++      struct thread_info *ti = current_thread_info();
++      if (ti->status & TS_COMPAT)
++              ti->status |= TS_COMPAT_RESTART;
++      else
++              ti->status &= ~TS_COMPAT_RESTART;
++}
+ #endif
+-#ifndef __ASSEMBLY__
+ 
+ #ifdef CONFIG_X86_32
+ #define in_ia32_syscall() true
+diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
+index 3401b28f13121..f398612e8a816 100644
+--- a/arch/x86/kernel/apic/io_apic.c
++++ b/arch/x86/kernel/apic/io_apic.c
+@@ -1042,6 +1042,16 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int 
ioapic, int pin,
+       if (idx >= 0 && test_bit(mp_irqs[idx].srcbus, mp_bus_not_pci)) {
+               irq = mp_irqs[idx].srcbusirq;
+               legacy = mp_is_legacy_irq(irq);
++              /*
++               * IRQ2 is unusable for historical reasons on systems which
++               * have a legacy PIC. See the comment vs. IRQ2 further down.
++               *
++               * If this gets removed at some point then the related code
++               * in lapic_assign_system_vectors() needs to be adjusted as
++               * well.
++               */
++              if (legacy && irq == PIC_CASCADE_IR)
++                      return -EINVAL;
+       }
+ 
+       mutex_lock(&ioapic_mutex);
+diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
+index ca010dfb9682b..4050d5092c86b 100644
+--- a/arch/x86/kernel/signal.c
++++ b/arch/x86/kernel/signal.c
+@@ -767,30 +767,8 @@ handle_signal(struct ksignal *ksig, struct pt_regs *regs)
+ 
+ static inline unsigned long get_nr_restart_syscall(const struct pt_regs *regs)
+ {
+-      /*
+-       * This function is fundamentally broken as currently
+-       * implemented.
+-       *
+-       * The idea is that we want to trigger a call to the
+-       * restart_block() syscall and that we want in_ia32_syscall(),
+-       * in_x32_syscall(), etc. to match whatever they were in the
+-       * syscall being restarted.  We assume that the syscall
+-       * instruction at (regs->ip - 2) matches whatever syscall
+-       * instruction we used to enter in the first place.
+-       *
+-       * The problem is that we can get here when ptrace pokes
+-       * syscall-like values into regs even if we're not in a syscall
+-       * at all.
+-       *
+-       * For now, we maintain historical behavior and guess based on
+-       * stored state.  We could do better by saving the actual
+-       * syscall arch in restart_block or (with caveats on x32) by
+-       * checking if regs->ip points to 'int $0x80'.  The current
+-       * behavior is incorrect if a tracer has a different bitness
+-       * than the tracee.
+-       */
+ #ifdef CONFIG_IA32_EMULATION
+-      if (current_thread_info()->status & (TS_COMPAT|TS_I386_REGS_POKED))
++      if (current_thread_info()->status & TS_COMPAT_RESTART)
+               return __NR_ia32_restart_syscall;
+ #endif
+ #ifdef CONFIG_X86_X32_ABI
+diff --git a/drivers/iio/imu/adis16400_core.c 
b/drivers/iio/imu/adis16400_core.c
+index fb7c0dbed51cb..67837905f7b45 100644
+--- a/drivers/iio/imu/adis16400_core.c
++++ b/drivers/iio/imu/adis16400_core.c
+@@ -288,8 +288,7 @@ static int adis16400_initial_setup(struct iio_dev 
*indio_dev)
+               if (ret)
+                       goto err_ret;
+ 
+-              ret = sscanf(indio_dev->name, "adis%u\n", &device_id);
+-              if (ret != 1) {
++              if (sscanf(indio_dev->name, "adis%u\n", &device_id) != 1) {
+                       ret = -EINVAL;
+                       goto err_ret;
+               }
+diff --git a/drivers/net/dsa/b53/b53_common.c 
b/drivers/net/dsa/b53/b53_common.c
+index 5ec0042bc3840..b6867a8915dac 100644
+--- a/drivers/net/dsa/b53/b53_common.c
++++ b/drivers/net/dsa/b53/b53_common.c
+@@ -502,6 +502,19 @@ static void b53_imp_vlan_setup(struct dsa_switch *ds, int 
cpu_port)
+       }
+ }
+ 
++static void b53_port_set_learning(struct b53_device *dev, int port,
++                                bool learning)
++{
++      u16 reg;
++
++      b53_read16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, &reg);
++      if (learning)
++              reg &= ~BIT(port);
++      else
++              reg |= BIT(port);
++      b53_write16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, reg);
++}
++
+ static int b53_enable_port(struct dsa_switch *ds, int port,
+                          struct phy_device *phy)
+ {
+@@ -509,6 +522,8 @@ static int b53_enable_port(struct dsa_switch *ds, int port,
+       unsigned int cpu_port = dev->cpu_port;
+       u16 pvlan;
+ 
++      b53_port_set_learning(dev, port, false);
++
+       /* Clear the Rx and Tx disable bits and set to no spanning tree */
+       b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
+ 
+@@ -552,6 +567,8 @@ static void b53_enable_cpu_port(struct b53_device *dev)
+                   PORT_CTRL_RX_MCST_EN |
+                   PORT_CTRL_RX_UCST_EN;
+       b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(cpu_port), port_ctrl);
++
++      b53_port_set_learning(dev, cpu_port, false);
+ }
+ 
+ static void b53_enable_mib(struct b53_device *dev)
+@@ -1375,6 +1392,8 @@ static int b53_br_join(struct dsa_switch *ds, int port,
+       b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
+       dev->ports[port].vlan_ctl_mask = pvlan;
+ 
++      b53_port_set_learning(dev, port, true);
++
+       return 0;
+ }
+ 
+@@ -1426,6 +1445,7 @@ static void b53_br_leave(struct dsa_switch *ds, int port)
+               vl->untag |= BIT(port) | BIT(dev->cpu_port);
+               b53_set_vlan_entry(dev, pvid, vl);
+       }
++      b53_port_set_learning(dev, port, false);
+ }
+ 
+ static void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state)
+diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
+index 3cf246c6bdcc4..aed70e76006da 100644
+--- a/drivers/net/dsa/b53/b53_regs.h
++++ b/drivers/net/dsa/b53/b53_regs.h
+@@ -112,6 +112,7 @@
+ #define B53_UC_FLOOD_MASK             0x32
+ #define B53_MC_FLOOD_MASK             0x34
+ #define B53_IPMC_FLOOD_MASK           0x36
++#define B53_DIS_LEARNING              0x3c
+ 
+ /*
+  * Override Ports 0-7 State on devices with xMII interfaces (8 bit)
+diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
+index a3742a3b413cd..0c69d5858558a 100644
+--- a/drivers/net/dsa/bcm_sf2.c
++++ b/drivers/net/dsa/bcm_sf2.c
+@@ -224,6 +224,11 @@ static int bcm_sf2_port_setup(struct dsa_switch *ds, int 
port,
+       reg &= ~P_TXQ_PSM_VDD(port);
+       core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
+ 
++      /* Disable learning */
++      reg = core_readl(priv, CORE_DIS_LEARN);
++      reg |= BIT(port);
++      core_writel(priv, reg, CORE_DIS_LEARN);
++
+       /* Clear the Rx and Tx disable bits and set to no spanning tree */
+       core_writel(priv, 0, CORE_G_PCTL_PORT(port));
+ 
+diff --git a/drivers/net/dsa/bcm_sf2_regs.h b/drivers/net/dsa/bcm_sf2_regs.h
+index 838fe373cd6f7..ca1d1f2e1161a 100644
+--- a/drivers/net/dsa/bcm_sf2_regs.h
++++ b/drivers/net/dsa/bcm_sf2_regs.h
+@@ -138,6 +138,8 @@
+ #define CORE_SWITCH_CTRL              0x00088
+ #define  MII_DUMB_FWDG_EN             (1 << 6)
+ 
++#define CORE_DIS_LEARN                        0x000f0
++
+ #define CORE_SFT_LRN_CTRL             0x000f8
+ #define  SW_LEARN_CNTL(x)             (1 << (x))
+ 
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h 
b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+index b06e32d0d22af..293ff8cc69948 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+@@ -991,6 +991,7 @@ void ixgbe_ptp_suspend(struct ixgbe_adapter *adapter);
+ void ixgbe_ptp_stop(struct ixgbe_adapter *adapter);
+ void ixgbe_ptp_overflow_check(struct ixgbe_adapter *adapter);
+ void ixgbe_ptp_rx_hang(struct ixgbe_adapter *adapter);
++void ixgbe_ptp_tx_hang(struct ixgbe_adapter *adapter);
+ void ixgbe_ptp_rx_pktstamp(struct ixgbe_q_vector *, struct sk_buff *);
+ void ixgbe_ptp_rx_rgtstamp(struct ixgbe_q_vector *, struct sk_buff *skb);
+ static inline void ixgbe_ptp_rx_hwtstamp(struct ixgbe_ring *rx_ring,
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+index 4c729faeb7132..36d73bf32f4fb 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+@@ -7257,7 +7257,9 @@ static void ixgbe_service_task(struct work_struct *work)
+ 
+       if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) {
+               ixgbe_ptp_overflow_check(adapter);
+-              ixgbe_ptp_rx_hang(adapter);
++              if (adapter->flags & IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER)
++                      ixgbe_ptp_rx_hang(adapter);
++              ixgbe_ptp_tx_hang(adapter);
+       }
+ 
+       ixgbe_service_event_complete(adapter);
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
+index a92277683a649..a93a1b3bb8e4d 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
+@@ -662,6 +662,33 @@ static void ixgbe_ptp_clear_tx_timestamp(struct 
ixgbe_adapter *adapter)
+       clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state);
+ }
+ 
++/**
++ * ixgbe_ptp_tx_hang - detect error case where Tx timestamp never finishes
++ * @adapter: private network adapter structure
++ */
++void ixgbe_ptp_tx_hang(struct ixgbe_adapter *adapter)
++{
++      bool timeout = time_is_before_jiffies(adapter->ptp_tx_start +
++                                            IXGBE_PTP_TX_TIMEOUT);
++
++      if (!adapter->ptp_tx_skb)
++              return;
++
++      if (!test_bit(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state))
++              return;
++
++      /* If we haven't received a timestamp within the timeout, it is
++       * reasonable to assume that it will never occur, so we can unlock the
++       * timestamp bit when this occurs.
++       */
++      if (timeout) {
++              cancel_work_sync(&adapter->ptp_tx_work);
++              ixgbe_ptp_clear_tx_timestamp(adapter);
++              adapter->tx_hwtstamp_timeouts++;
++              e_warn(drv, "clearing Tx timestamp hang\n");
++      }
++}
++
+ /**
+  * ixgbe_ptp_tx_hwtstamp - utility function which checks for TX time stamp
+  * @adapter: the private adapter struct
+diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
+index 4b58f352c0c93..fb2461cc3c693 100644
+--- a/drivers/nvme/target/core.c
++++ b/drivers/nvme/target/core.c
+@@ -574,9 +574,20 @@ static void nvmet_start_ctrl(struct nvmet_ctrl *ctrl)
+ {
+       lockdep_assert_held(&ctrl->lock);
+ 
+-      if (nvmet_cc_iosqes(ctrl->cc) != NVME_NVM_IOSQES ||
+-          nvmet_cc_iocqes(ctrl->cc) != NVME_NVM_IOCQES ||
+-          nvmet_cc_mps(ctrl->cc) != 0 ||
++      /*
++       * Only I/O controllers should verify iosqes,iocqes.
++       * Strictly speaking, the spec says a discovery controller
++       * should verify iosqes,iocqes are zeroed, however that
++       * would break backwards compatibility, so don't enforce it.
++       */
++      if (ctrl->subsys->type != NVME_NQN_DISC &&
++          (nvmet_cc_iosqes(ctrl->cc) != NVME_NVM_IOSQES ||
++           nvmet_cc_iocqes(ctrl->cc) != NVME_NVM_IOCQES)) {
++              ctrl->csts = NVME_CSTS_CFS;
++              return;
++      }
++
++      if (nvmet_cc_mps(ctrl->cc) != 0 ||
+           nvmet_cc_ams(ctrl->cc) != 0 ||
+           nvmet_cc_css(ctrl->cc) != 0) {
+               ctrl->csts = NVME_CSTS_CFS;
+diff --git a/drivers/pci/hotplug/rpadlpar_sysfs.c 
b/drivers/pci/hotplug/rpadlpar_sysfs.c
+index a796301ea03fb..ca9d832bd9f83 100644
+--- a/drivers/pci/hotplug/rpadlpar_sysfs.c
++++ b/drivers/pci/hotplug/rpadlpar_sysfs.c
+@@ -39,12 +39,11 @@ static ssize_t add_slot_store(struct kobject *kobj, struct 
kobj_attribute *attr,
+       if (nbytes >= MAX_DRC_NAME_LEN)
+               return 0;
+ 
+-      memcpy(drc_name, buf, nbytes);
++      strscpy(drc_name, buf, nbytes + 1);
+ 
+       end = strchr(drc_name, '\n');
+-      if (!end)
+-              end = &drc_name[nbytes];
+-      *end = '\0';
++      if (end)
++              *end = '\0';
+ 
+       rc = dlpar_add_slot(drc_name);
+       if (rc)
+@@ -70,12 +69,11 @@ static ssize_t remove_slot_store(struct kobject *kobj,
+       if (nbytes >= MAX_DRC_NAME_LEN)
+               return 0;
+ 
+-      memcpy(drc_name, buf, nbytes);
++      strscpy(drc_name, buf, nbytes + 1);
+ 
+       end = strchr(drc_name, '\n');
+-      if (!end)
+-              end = &drc_name[nbytes];
+-      *end = '\0';
++      if (end)
++              *end = '\0';
+ 
+       rc = dlpar_remove_slot(drc_name);
+       if (rc)
+diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c 
b/drivers/scsi/lpfc/lpfc_debugfs.c
+index a63542bac1533..feb00585a7a4d 100644
+--- a/drivers/scsi/lpfc/lpfc_debugfs.c
++++ b/drivers/scsi/lpfc/lpfc_debugfs.c
+@@ -1061,7 +1061,7 @@ lpfc_debugfs_dif_err_write(struct file *file, const char 
__user *buf,
+       memset(dstbuf, 0, 33);
+       size = (nbytes < 32) ? nbytes : 32;
+       if (copy_from_user(dstbuf, buf, size))
+-              return 0;
++              return -EFAULT;
+ 
+       if (dent == phba->debug_InjErrLBA) {
+               if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f'))
+@@ -1069,7 +1069,7 @@ lpfc_debugfs_dif_err_write(struct file *file, const char 
__user *buf,
+       }
+ 
+       if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp)))
+-              return 0;
++              return -EINVAL;
+ 
+       if (dent == phba->debug_writeGuard)
+               phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp;
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index c574bf981140a..f33635ab967f7 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -1076,7 +1076,7 @@ static void collect_langs(struct usb_gadget_strings 
**sp, __le16 *buf)
+       while (*sp) {
+               s = *sp;
+               language = cpu_to_le16(s->language);
+-              for (tmp = buf; *tmp && tmp < &buf[126]; tmp++) {
++              for (tmp = buf; *tmp && tmp < &buf[USB_MAX_STRING_LEN]; tmp++) {
+                       if (*tmp == language)
+                               goto repeat;
+               }
+@@ -1151,7 +1151,7 @@ static int get_string(struct usb_composite_dev *cdev,
+                       collect_langs(sp, s->wData);
+               }
+ 
+-              for (len = 0; len <= 126 && s->wData[len]; len++)
++              for (len = 0; len <= USB_MAX_STRING_LEN && s->wData[len]; len++)
+                       continue;
+               if (!len)
+                       return -EINVAL;
+diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
+index 0aa1b8fa9b47a..fe1b54a8fb0c8 100644
+--- a/drivers/usb/gadget/configfs.c
++++ b/drivers/usb/gadget/configfs.c
+@@ -108,21 +108,27 @@ struct gadget_config_name {
+       struct list_head list;
+ };
+ 
++#define USB_MAX_STRING_WITH_NULL_LEN  (USB_MAX_STRING_LEN+1)
++
+ static int usb_string_copy(const char *s, char **s_copy)
+ {
+       int ret;
+       char *str;
+       char *copy = *s_copy;
+       ret = strlen(s);
+-      if (ret > 126)
++      if (ret > USB_MAX_STRING_LEN)
+               return -EOVERFLOW;
+ 
+-      str = kstrdup(s, GFP_KERNEL);
+-      if (!str)
+-              return -ENOMEM;
++      if (copy) {
++              str = copy;
++      } else {
++              str = kmalloc(USB_MAX_STRING_WITH_NULL_LEN, GFP_KERNEL);
++              if (!str)
++                      return -ENOMEM;
++      }
++      strcpy(str, s);
+       if (str[ret - 1] == '\n')
+               str[ret - 1] = '\0';
+-      kfree(copy);
+       *s_copy = str;
+       return 0;
+ }
+diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c
+index 73a4dfba0edbf..0173a9969b9a0 100644
+--- a/drivers/usb/gadget/usbstring.c
++++ b/drivers/usb/gadget/usbstring.c
+@@ -59,9 +59,9 @@ usb_gadget_get_string (struct usb_gadget_strings *table, int 
id, u8 *buf)
+               return -EINVAL;
+ 
+       /* string descriptors have length, tag, then UTF16-LE text */
+-      len = min ((size_t) 126, strlen (s->s));
++      len = min((size_t)USB_MAX_STRING_LEN, strlen(s->s));
+       len = utf8s_to_utf16s(s->s, len, UTF16_LITTLE_ENDIAN,
+-                      (wchar_t *) &buf[2], 126);
++                      (wchar_t *) &buf[2], USB_MAX_STRING_LEN);
+       if (len < 0)
+               return -EINVAL;
+       buf [0] = (len + 1) * 2;
+diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
+index 0eebd0bd6bc0e..cad06c60ad663 100644
+--- a/fs/btrfs/ctree.c
++++ b/fs/btrfs/ctree.c
+@@ -1422,7 +1422,9 @@ get_old_root(struct btrfs_root *root, u64 time_seq)
+                       btrfs_warn(root->fs_info,
+                               "failed to read tree block %llu from 
get_old_root", logical);
+               } else {
++                      btrfs_tree_read_lock(old);
+                       eb = btrfs_clone_extent_buffer(old);
++                      btrfs_tree_read_unlock(old);
+                       free_extent_buffer(old);
+               }
+       } else if (old_root) {
+diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
+index 45c7b0f9a8e3f..c50dcda7b708a 100644
+--- a/fs/ext4/block_validity.c
++++ b/fs/ext4/block_validity.c
+@@ -23,6 +23,7 @@ struct ext4_system_zone {
+       struct rb_node  node;
+       ext4_fsblk_t    start_blk;
+       unsigned int    count;
++      u32             ino;
+ };
+ 
+ static struct kmem_cache *ext4_system_zone_cachep;
+@@ -43,7 +44,8 @@ void ext4_exit_system_zone(void)
+ static inline int can_merge(struct ext4_system_zone *entry1,
+                    struct ext4_system_zone *entry2)
+ {
+-      if ((entry1->start_blk + entry1->count) == entry2->start_blk)
++      if ((entry1->start_blk + entry1->count) == entry2->start_blk &&
++          entry1->ino == entry2->ino)
+               return 1;
+       return 0;
+ }
+@@ -55,9 +57,9 @@ static inline int can_merge(struct ext4_system_zone *entry1,
+  */
+ static int add_system_zone(struct ext4_sb_info *sbi,
+                          ext4_fsblk_t start_blk,
+-                         unsigned int count)
++                         unsigned int count, u32 ino)
+ {
+-      struct ext4_system_zone *new_entry = NULL, *entry;
++      struct ext4_system_zone *new_entry, *entry;
+       struct rb_node **n = &sbi->system_blks.rb_node, *node;
+       struct rb_node *parent = NULL, *new_node = NULL;
+ 
+@@ -68,30 +70,21 @@ static int add_system_zone(struct ext4_sb_info *sbi,
+                       n = &(*n)->rb_left;
+               else if (start_blk >= (entry->start_blk + entry->count))
+                       n = &(*n)->rb_right;
+-              else {
+-                      if (start_blk + count > (entry->start_blk +
+-                                               entry->count))
+-                              entry->count = (start_blk + count -
+-                                              entry->start_blk);
+-                      new_node = *n;
+-                      new_entry = rb_entry(new_node, struct ext4_system_zone,
+-                                           node);
+-                      break;
+-              }
++              else    /* Unexpected overlap of system zones. */
++                      return -EFSCORRUPTED;
+       }
+ 
+-      if (!new_entry) {
+-              new_entry = kmem_cache_alloc(ext4_system_zone_cachep,
+-                                           GFP_KERNEL);
+-              if (!new_entry)
+-                      return -ENOMEM;
+-              new_entry->start_blk = start_blk;
+-              new_entry->count = count;
+-              new_node = &new_entry->node;
++      new_entry = kmem_cache_alloc(ext4_system_zone_cachep,
++                                   GFP_KERNEL);
++      if (!new_entry)
++              return -ENOMEM;
++      new_entry->start_blk = start_blk;
++      new_entry->count = count;
++      new_entry->ino = ino;
++      new_node = &new_entry->node;
+ 
+-              rb_link_node(new_node, parent, n);
+-              rb_insert_color(new_node, &sbi->system_blks);
+-      }
++      rb_link_node(new_node, parent, n);
++      rb_insert_color(new_node, &sbi->system_blks);
+ 
+       /* Can we merge to the left? */
+       node = rb_prev(new_node);
+@@ -163,16 +156,16 @@ static int ext4_protect_reserved_inode(struct 
super_block *sb, u32 ino)
+               if (n == 0) {
+                       i++;
+               } else {
+-                      if (!ext4_data_block_valid(sbi, map.m_pblk, n)) {
+-                              ext4_error(sb, "blocks %llu-%llu from inode %u "
++                      err = add_system_zone(sbi, map.m_pblk, n, ino);
++                      if (err < 0) {
++                              if (err == -EFSCORRUPTED) {
++                                      ext4_error(sb,
++                                         "blocks %llu-%llu from inode %u "
+                                          "overlap system zone", map.m_pblk,
+                                          map.m_pblk + map.m_len - 1, ino);
+-                              err = -EFSCORRUPTED;
++                              }
+                               break;
+                       }
+-                      err = add_system_zone(sbi, map.m_pblk, n);
+-                      if (err < 0)
+-                              break;
+                       i += n;
+               }
+       }
+@@ -201,16 +194,16 @@ int ext4_setup_system_zone(struct super_block *sb)
+               if (ext4_bg_has_super(sb, i) &&
+                   ((i < 5) || ((i % flex_size) == 0)))
+                       add_system_zone(sbi, ext4_group_first_block_no(sb, i),
+-                                      ext4_bg_num_gdb(sb, i) + 1);
++                                      ext4_bg_num_gdb(sb, i) + 1, 0);
+               gdp = ext4_get_group_desc(sb, i, NULL);
+-              ret = add_system_zone(sbi, ext4_block_bitmap(sb, gdp), 1);
++              ret = add_system_zone(sbi, ext4_block_bitmap(sb, gdp), 1, 0);
+               if (ret)
+                       return ret;
+-              ret = add_system_zone(sbi, ext4_inode_bitmap(sb, gdp), 1);
++              ret = add_system_zone(sbi, ext4_inode_bitmap(sb, gdp), 1, 0);
+               if (ret)
+                       return ret;
+               ret = add_system_zone(sbi, ext4_inode_table(sb, gdp),
+-                              sbi->s_itb_per_group);
++                              sbi->s_itb_per_group, 0);
+               if (ret)
+                       return ret;
+       }
+@@ -243,10 +236,11 @@ void ext4_release_system_zone(struct super_block *sb)
+  * start_blk+count) is valid; 0 if some part of the block region
+  * overlaps with filesystem metadata blocks.
+  */
+-int ext4_data_block_valid(struct ext4_sb_info *sbi, ext4_fsblk_t start_blk,
+-                        unsigned int count)
++int ext4_inode_block_valid(struct inode *inode, ext4_fsblk_t start_blk,
++                         unsigned int count)
+ {
+       struct ext4_system_zone *entry;
++      struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+       struct rb_node *n = sbi->system_blks.rb_node;
+ 
+       if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
+@@ -262,6 +256,8 @@ int ext4_data_block_valid(struct ext4_sb_info *sbi, 
ext4_fsblk_t start_blk,
+               else if (start_blk >= (entry->start_blk + entry->count))
+                       n = n->rb_right;
+               else {
++                      if (entry->ino == inode->i_ino)
++                              return 1;
+                       sbi->s_es->s_last_error_block = cpu_to_le64(start_blk);
+                       return 0;
+               }
+@@ -284,8 +280,7 @@ int ext4_check_blockref(const char *function, unsigned int 
line,
+       while (bref < p+max) {
+               blk = le32_to_cpu(*bref++);
+               if (blk &&
+-                  unlikely(!ext4_data_block_valid(EXT4_SB(inode->i_sb),
+-                                                  blk, 1))) {
++                  unlikely(!ext4_inode_block_valid(inode, blk, 1))) {
+                       es->s_last_error_block = cpu_to_le64(blk);
+                       ext4_error_inode(inode, function, line, blk,
+                                        "invalid block");
+diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
+index 54a7f3b8b1bf3..1b62bd9e73125 100644
+--- a/fs/ext4/ext4.h
++++ b/fs/ext4/ext4.h
+@@ -3136,9 +3136,9 @@ extern void ext4_release_system_zone(struct super_block 
*sb);
+ extern int ext4_setup_system_zone(struct super_block *sb);
+ extern int __init ext4_init_system_zone(void);
+ extern void ext4_exit_system_zone(void);
+-extern int ext4_data_block_valid(struct ext4_sb_info *sbi,
+-                               ext4_fsblk_t start_blk,
+-                               unsigned int count);
++extern int ext4_inode_block_valid(struct inode *inode,
++                                ext4_fsblk_t start_blk,
++                                unsigned int count);
+ extern int ext4_check_blockref(const char *, unsigned int,
+                              struct inode *, __le32 *, unsigned int);
+ 
+diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
+index ab19f61bd04bc..7f291b7be7f3a 100644
+--- a/fs/ext4/extents.c
++++ b/fs/ext4/extents.c
+@@ -389,7 +389,7 @@ static int ext4_valid_extent(struct inode *inode, struct 
ext4_extent *ext)
+        */
+       if (lblock + len <= lblock)
+               return 0;
+-      return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len);
++      return ext4_inode_block_valid(inode, block, len);
+ }
+ 
+ static int ext4_valid_extent_idx(struct inode *inode,
+@@ -397,7 +397,7 @@ static int ext4_valid_extent_idx(struct inode *inode,
+ {
+       ext4_fsblk_t block = ext4_idx_pblock(ext_idx);
+ 
+-      return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, 1);
++      return ext4_inode_block_valid(inode, block, 1);
+ }
+ 
+ static int ext4_valid_extent_entries(struct inode *inode,
+@@ -554,14 +554,10 @@ __read_extent_tree_block(const char *function, unsigned 
int line,
+       }
+       if (buffer_verified(bh) && !(flags & EXT4_EX_FORCE_CACHE))
+               return bh;
+-      if (!ext4_has_feature_journal(inode->i_sb) ||
+-          (inode->i_ino !=
+-           le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_journal_inum))) {
+-              err = __ext4_ext_check(function, line, inode,
+-                                     ext_block_hdr(bh), depth, pblk);
+-              if (err)
+-                      goto errout;
+-      }
++      err = __ext4_ext_check(function, line, inode,
++                             ext_block_hdr(bh), depth, pblk);
++      if (err)
++              goto errout;
+       set_buffer_verified(bh);
+       /*
+        * If this is a leaf block, cache all of its entries
+diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
+index d2844fe9040dd..ff7e1ac6ee530 100644
+--- a/fs/ext4/indirect.c
++++ b/fs/ext4/indirect.c
+@@ -840,8 +840,7 @@ static int ext4_clear_blocks(handle_t *handle, struct 
inode *inode,
+       else if (ext4_should_journal_data(inode))
+               flags |= EXT4_FREE_BLOCKS_FORGET;
+ 
+-      if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), block_to_free,
+-                                 count)) {
++      if (!ext4_inode_block_valid(inode, block_to_free, count)) {
+               EXT4_ERROR_INODE(inode, "attempt to clear invalid "
+                                "blocks %llu len %lu",
+                                (unsigned long long) block_to_free, count);
+@@ -1003,8 +1002,7 @@ static void ext4_free_branches(handle_t *handle, struct 
inode *inode,
+                       if (!nr)
+                               continue;               /* A hole */
+ 
+-                      if (!ext4_data_block_valid(EXT4_SB(inode->i_sb),
+-                                                 nr, 1)) {
++                      if (!ext4_inode_block_valid(inode, nr, 1)) {
+                               EXT4_ERROR_INODE(inode,
+                                                "invalid indirect mapped "
+                                                "block %lu (level %d)",
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index ccce89de6d7e3..aa97a3ed3d8f7 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -378,8 +378,7 @@ static int __check_block_validity(struct inode *inode, 
const char *func,
+           (inode->i_ino ==
+            le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_journal_inum)))
+               return 0;
+-      if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), map->m_pblk,
+-                                 map->m_len)) {
++      if (!ext4_inode_block_valid(inode, map->m_pblk, map->m_len)) {
+               ext4_error_inode(inode, func, line, map->m_pblk,
+                                "lblock %lu mapped to illegal pblock %llu "
+                                "(length %d)", (unsigned long) map->m_lblk,
+@@ -4704,7 +4703,7 @@ struct inode *__ext4_iget(struct super_block *sb, 
unsigned long ino,
+ 
+       ret = 0;
+       if (ei->i_file_acl &&
+-          !ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) {
++          !ext4_inode_block_valid(inode, ei->i_file_acl, 1)) {
+               ext4_error_inode(inode, function, line, 0,
+                                "iget: bad extended attribute block %llu",
+                                ei->i_file_acl);
+@@ -4894,7 +4893,7 @@ static int ext4_do_update_inode(handle_t *handle,
+       struct ext4_inode_info *ei = EXT4_I(inode);
+       struct buffer_head *bh = iloc->bh;
+       struct super_block *sb = inode->i_sb;
+-      int err = 0, rc, block;
++      int err = 0, block;
+       int need_datasync = 0, set_large_file = 0;
+       uid_t i_uid;
+       gid_t i_gid;
+@@ -5004,9 +5003,9 @@ static int ext4_do_update_inode(handle_t *handle,
+                                             bh->b_data);
+ 
+       BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+-      rc = ext4_handle_dirty_metadata(handle, NULL, bh);
+-      if (!err)
+-              err = rc;
++      err = ext4_handle_dirty_metadata(handle, NULL, bh);
++      if (err)
++              goto out_brelse;
+       ext4_clear_inode_state(inode, EXT4_STATE_NEW);
+       if (set_large_file) {
+               BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get write access");
+diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
+index 1d543f8b3814f..807331da9dfc1 100644
+--- a/fs/ext4/mballoc.c
++++ b/fs/ext4/mballoc.c
+@@ -2963,7 +2963,7 @@ ext4_mb_mark_diskspace_used(struct 
ext4_allocation_context *ac,
+       block = ext4_grp_offs_to_block(sb, &ac->ac_b_ex);
+ 
+       len = EXT4_C2B(sbi, ac->ac_b_ex.fe_len);
+-      if (!ext4_data_block_valid(sbi, block, len)) {
++      if (!ext4_inode_block_valid(ac->ac_inode, block, len)) {
+               ext4_error(sb, "Allocating blocks %llu-%llu which overlap "
+                          "fs metadata", block, block+len);
+               /* File system mounted not to panic on error
+@@ -4725,7 +4725,7 @@ void ext4_free_blocks(handle_t *handle, struct inode 
*inode,
+ 
+       sbi = EXT4_SB(sb);
+       if (!(flags & EXT4_FREE_BLOCKS_VALIDATED) &&
+-          !ext4_data_block_valid(sbi, block, count)) {
++          !ext4_inode_block_valid(inode, block, count)) {
+               ext4_error(sb, "Freeing blocks not in datazone - "
+                          "block = %llu, count = %lu", block, count);
+               goto error_return;
+diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
+index 6224b0e6fb643..e6e3eb8dd4d6c 100644
+--- a/fs/ext4/namei.c
++++ b/fs/ext4/namei.c
+@@ -3425,6 +3425,31 @@ static int ext4_setent(handle_t *handle, struct 
ext4_renament *ent,
+       return 0;
+ }
+ 
++static void ext4_resetent(handle_t *handle, struct ext4_renament *ent,
++                        unsigned ino, unsigned file_type)
++{
++      struct ext4_renament old = *ent;
++      int retval = 0;
++
++      /*
++       * old->de could have moved from under us during make indexed dir,
++       * so the old->de may no longer valid and need to find it again
++       * before reset old inode info.
++       */
++      old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL);
++      if (IS_ERR(old.bh))
++              retval = PTR_ERR(old.bh);
++      if (!old.bh)
++              retval = -ENOENT;
++      if (retval) {
++              ext4_std_error(old.dir->i_sb, retval);
++              return;
++      }
++
++      ext4_setent(handle, &old, ino, file_type);
++      brelse(old.bh);
++}
++
+ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir,
+                                 const struct qstr *d_name)
+ {
+@@ -3734,8 +3759,8 @@ static int ext4_rename(struct inode *old_dir, struct 
dentry *old_dentry,
+ end_rename:
+       if (whiteout) {
+               if (retval) {
+-                      ext4_setent(handle, &old,
+-                              old.inode->i_ino, old_file_type);
++                      ext4_resetent(handle, &old,
++                                    old.inode->i_ino, old_file_type);
+                       drop_nlink(whiteout);
+               }
+               unlock_new_inode(whiteout);
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index 84d28d3efc602..f70c5541d718d 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -5148,7 +5148,10 @@ static int ext4_remount(struct super_block *sb, int 
*flags, char *data)
+               ext4_register_li_request(sb, first_not_zeroed);
+       }
+ 
+-      ext4_setup_system_zone(sb);
++      err = ext4_setup_system_zone(sb);
++      if (err)
++              goto restore_opts;
++
+       if (sbi->s_journal == NULL && !(old_sb_flags & MS_RDONLY))
+               ext4_commit_super(sb, 1);
+ 
+diff --git a/fs/select.c b/fs/select.c
+index 3d4f85defeab0..de675c79f479d 100644
+--- a/fs/select.c
++++ b/fs/select.c
+@@ -961,10 +961,9 @@ static long do_restart_poll(struct restart_block 
*restart_block)
+ 
+       ret = do_sys_poll(ufds, nfds, to);
+ 
+-      if (ret == -EINTR) {
+-              restart_block->fn = do_restart_poll;
+-              ret = -ERESTART_RESTARTBLOCK;
+-      }
++      if (ret == -EINTR)
++              ret = set_restart_fn(restart_block, do_restart_poll);
++
+       return ret;
+ }
+ 
+@@ -986,7 +985,6 @@ SYSCALL_DEFINE3(poll, struct pollfd __user *, ufds, 
unsigned int, nfds,
+               struct restart_block *restart_block;
+ 
+               restart_block = &current->restart_block;
+-              restart_block->fn = do_restart_poll;
+               restart_block->poll.ufds = ufds;
+               restart_block->poll.nfds = nfds;
+ 
+@@ -997,7 +995,7 @@ SYSCALL_DEFINE3(poll, struct pollfd __user *, ufds, 
unsigned int, nfds,
+               } else
+                       restart_block->poll.has_timeout = 0;
+ 
+-              ret = -ERESTART_RESTARTBLOCK;
++              ret = set_restart_fn(restart_block, do_restart_poll);
+       }
+       return ret;
+ }
+diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
+index 5e6436741f968..330794252270d 100644
+--- a/include/linux/thread_info.h
++++ b/include/linux/thread_info.h
+@@ -9,6 +9,7 @@
+ 
+ #include <linux/types.h>
+ #include <linux/bug.h>
++#include <linux/errno.h>
+ 
+ struct timespec;
+ struct compat_timespec;
+@@ -59,6 +60,18 @@ extern long do_no_restart_syscall(struct restart_block 
*parm);
+ 
+ #ifdef __KERNEL__
+ 
++#ifndef arch_set_restart_data
++#define arch_set_restart_data(restart) do { } while (0)
++#endif
++
++static inline long set_restart_fn(struct restart_block *restart,
++                                      long (*fn)(struct restart_block *))
++{
++      restart->fn = fn;
++      arch_set_restart_data(restart);
++      return -ERESTART_RESTARTBLOCK;
++}
++
+ #define THREADINFO_GFP        (GFP_KERNEL_ACCOUNT | __GFP_NOTRACK | 
__GFP_ZERO)
+ 
+ /*
+diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
+index 33c603dd7cd30..8e0e6d3091f19 100644
+--- a/include/uapi/linux/usb/ch9.h
++++ b/include/uapi/linux/usb/ch9.h
+@@ -358,6 +358,9 @@ struct usb_config_descriptor {
+ 
+ /*-------------------------------------------------------------------------*/
+ 
++/* USB String descriptors can contain at most 126 characters. */
++#define USB_MAX_STRING_LEN    126
++
+ /* USB_DT_STRING: String descriptor */
+ struct usb_string_descriptor {
+       __u8  bLength;
+diff --git a/kernel/futex.c b/kernel/futex.c
+index 0015c14ac2c04..796b1c8608397 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -2822,14 +2822,13 @@ retry:
+               goto out;
+ 
+       restart = &current->restart_block;
+-      restart->fn = futex_wait_restart;
+       restart->futex.uaddr = uaddr;
+       restart->futex.val = val;
+       restart->futex.time = abs_time->tv64;
+       restart->futex.bitset = bitset;
+       restart->futex.flags = flags | FLAGS_HAS_TIMEOUT;
+ 
+-      ret = -ERESTART_RESTARTBLOCK;
++      ret = set_restart_fn(restart, futex_wait_restart);
+ 
+ out:
+       if (to) {
+diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
+index b2fc2a581b861..33770ef64d219 100644
+--- a/kernel/irq/manage.c
++++ b/kernel/irq/manage.c
+@@ -886,11 +886,15 @@ irq_forced_thread_fn(struct irq_desc *desc, struct 
irqaction *action)
+       irqreturn_t ret;
+ 
+       local_bh_disable();
++      if (!IS_ENABLED(CONFIG_PREEMPT_RT_BASE))
++              local_irq_disable();
+       ret = action->thread_fn(action->irq, action->dev_id);
+       if (ret == IRQ_HANDLED)
+               atomic_inc(&desc->threads_handled);
+ 
+       irq_finalize_oneshot(desc, action);
++      if (!IS_ENABLED(CONFIG_PREEMPT_RT_BASE))
++              local_irq_enable();
+       local_bh_enable();
+       return ret;
+ }
+diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
+index 6aef4a0bed29e..d06c1d8dd4d27 100644
+--- a/kernel/time/alarmtimer.c
++++ b/kernel/time/alarmtimer.c
+@@ -809,10 +809,10 @@ static int alarm_timer_nsleep(const clockid_t 
which_clock, int flags,
+       }
+ 
+       restart = &current->restart_block;
+-      restart->fn = alarm_timer_nsleep_restart;
+       restart->nanosleep.clockid = type;
+       restart->nanosleep.expires = exp.tv64;
+       restart->nanosleep.rmtp = rmtp;
++      set_restart_fn(restart, alarm_timer_nsleep_restart);
+       ret = -ERESTART_RESTARTBLOCK;
+ 
+ out:
+diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
+index f31637ced7fac..df7750e032425 100644
+--- a/kernel/time/hrtimer.c
++++ b/kernel/time/hrtimer.c
+@@ -1582,10 +1582,10 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct 
timespec __user *rmtp,
+       }
+ 
+       restart = &current->restart_block;
+-      restart->fn = hrtimer_nanosleep_restart;
+       restart->nanosleep.clockid = t.timer.base->clockid;
+       restart->nanosleep.rmtp = rmtp;
+       restart->nanosleep.expires = hrtimer_get_expires_tv64(&t.timer);
++      set_restart_fn(restart, hrtimer_nanosleep_restart);
+ 
+       ret = -ERESTART_RESTARTBLOCK;
+ out:
+diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
+index 21a27bb735870..9fff077d0ffc4 100644
+--- a/kernel/time/posix-cpu-timers.c
++++ b/kernel/time/posix-cpu-timers.c
+@@ -1377,10 +1377,10 @@ static int posix_cpu_nsleep(const clockid_t 
which_clock, int flags,
+               if (rmtp && copy_to_user(rmtp, &it.it_value, sizeof *rmtp))
+                       return -EFAULT;
+ 
+-              restart_block->fn = posix_cpu_nsleep_restart;
+               restart_block->nanosleep.clockid = which_clock;
+               restart_block->nanosleep.rmtp = rmtp;
+               restart_block->nanosleep.expires = timespec_to_ns(rqtp);
++              set_restart_fn(restart_block, posix_cpu_nsleep_restart);
+       }
+       return error;
+ }
+diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
+index a8253079902fb..d62b7a7f65bb0 100644
+--- a/net/qrtr/qrtr.c
++++ b/net/qrtr/qrtr.c
+@@ -232,7 +232,7 @@ int qrtr_endpoint_post(struct qrtr_endpoint *ep, const 
void *data, size_t len)
+       if (dst != QRTR_PORT_CTRL && type != QRTR_TYPE_DATA)
+               return -EINVAL;
+ 
+-      skb = netdev_alloc_skb(NULL, len);
++      skb = __netdev_alloc_skb(NULL, len, GFP_ATOMIC | __GFP_NOWARN);
+       if (!skb)
+               return -ENOMEM;
+ 
+diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
+index eea18a124e4f7..ab6b7852a11cf 100644
+--- a/net/sunrpc/svc.c
++++ b/net/sunrpc/svc.c
+@@ -1306,7 +1306,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec 
*argv, struct kvec *resv)
+ 
+  sendit:
+       if (svc_authorise(rqstp))
+-              goto close;
++              goto close_xprt;
+       return 1;               /* Caller can now send it */
+ 
+  dropit:
+@@ -1315,6 +1315,8 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec 
*argv, struct kvec *resv)
+       return 0;
+ 
+  close:
++      svc_authorise(rqstp);
++close_xprt:
+       if (rqstp->rq_xprt && test_bit(XPT_TEMP, &rqstp->rq_xprt->xpt_flags))
+               svc_close_xprt(rqstp->rq_xprt);
+       dprintk("svc: svc_process close\n");
+@@ -1323,7 +1325,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec 
*argv, struct kvec *resv)
+ err_short_len:
+       svc_printk(rqstp, "short len %Zd, dropping request\n",
+                       argv->iov_len);
+-      goto close;
++      goto close_xprt;
+ 
+ err_bad_rpc:
+       serv->sv_stats->rpcbadfmt++;
+diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
+index 56e4ac8e2e994..7d366f6bef863 100644
+--- a/net/sunrpc/svc_xprt.c
++++ b/net/sunrpc/svc_xprt.c
+@@ -1104,7 +1104,7 @@ static int svc_close_list(struct svc_serv *serv, struct 
list_head *xprt_list, st
+       struct svc_xprt *xprt;
+       int ret = 0;
+ 
+-      spin_lock(&serv->sv_lock);
++      spin_lock_bh(&serv->sv_lock);
+       list_for_each_entry(xprt, xprt_list, xpt_list) {
+               if (xprt->xpt_net != net)
+                       continue;
+@@ -1112,7 +1112,7 @@ static int svc_close_list(struct svc_serv *serv, struct 
list_head *xprt_list, st
+               set_bit(XPT_CLOSE, &xprt->xpt_flags);
+               svc_xprt_enqueue(xprt);
+       }
+-      spin_unlock(&serv->sv_lock);
++      spin_unlock_bh(&serv->sv_lock);
+       return ret;
+ }
+ 
+diff --git a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c 
b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
+index b3d48c6243c80..791072cd94920 100644
+--- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
++++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
+@@ -328,9 +328,9 @@ xprt_setup_rdma_bc(struct xprt_create *args)
+       xprt->timeout = &xprt_rdma_bc_timeout;
+       xprt_set_bound(xprt);
+       xprt_set_connected(xprt);
+-      xprt->bind_timeout = RPCRDMA_BIND_TO;
+-      xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO;
+-      xprt->idle_timeout = RPCRDMA_IDLE_DISC_TO;
++      xprt->bind_timeout = 0;
++      xprt->reestablish_timeout = 0;
++      xprt->idle_timeout = 0;
+ 
+       xprt->prot = XPRT_TRANSPORT_BC_RDMA;
+       xprt->tsh_size = RPCRDMA_HDRLEN_MIN / sizeof(__be32);

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