Re: Linux 4.19.183

From: Greg Kroah-Hartman
Date: Wed Mar 24 2021 - 06:24:30 EST

diff --git a/Makefile b/Makefile
index 5956638e0f4d..9347445b2027 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 19
-SUBLEVEL = 182
+SUBLEVEL = 183
EXTRAVERSION =
NAME = "People's Front"

diff --git a/arch/powerpc/include/asm/cpu_has_feature.h b/arch/powerpc/include/asm/cpu_has_feature.h
index 7897d16e0990..727d4b321937 100644
--- a/arch/powerpc/include/asm/cpu_has_feature.h
+++ b/arch/powerpc/include/asm/cpu_has_feature.h
@@ -7,7 +7,7 @@
#include <linux/bug.h>
#include <asm/cputable.h>

-static inline bool early_cpu_has_feature(unsigned long feature)
+static __always_inline bool early_cpu_has_feature(unsigned long feature)
{
return !!((CPU_FTRS_ALWAYS & feature) ||
(CPU_FTRS_POSSIBLE & cur_cpu_spec->cpu_features & feature));
@@ -46,7 +46,7 @@ static __always_inline bool cpu_has_feature(unsigned long feature)
return static_branch_likely(&cpu_feature_keys[i]);
}
#else
-static inline bool cpu_has_feature(unsigned long feature)
+static __always_inline bool cpu_has_feature(unsigned long feature)
{
return early_cpu_has_feature(feature);
}
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 695432965f20..9b346f3d2814 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -99,6 +99,7 @@ SECTIONS
#endif
/* careful! __ftr_alt_* sections need to be close to .text */
*(.text.hot TEXT_MAIN .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text);
+ NOINSTR_TEXT
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 79caeba8b6f0..b3279feff458 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -1557,7 +1557,7 @@ 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 0f750e7b2407..cc4bb218f1c6 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -521,15 +521,6 @@ static inline void arch_thread_struct_whitelist(unsigned long *offset,
*size = fpu_kernel_xstate_size;
}

-/*
- * 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 82b73b75d67c..b5e4c357523e 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -227,10 +227,31 @@ 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/apic.c b/arch/x86/kernel/apic/apic.c
index e891b33ccfe5..da6b52c70964 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2279,6 +2279,11 @@ static int cpuid_to_apicid[] = {
[0 ... NR_CPUS - 1] = -1,
};

+bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
+{
+ return phys_id == cpuid_to_apicid[cpu];
+}
+
#ifdef CONFIG_SMP
/**
* apic_id_is_primary_thread - Check whether APIC ID belongs to a primary thread
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 15234885e60b..a89dac380243 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1043,6 +1043,16 @@ 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 44e647a65de8..16e908000550 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -776,30 +776,8 @@ 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/base/power/runtime.c b/drivers/base/power/runtime.c
index b118b5a500c9..2c99f93020bc 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -304,22 +304,22 @@ static void rpm_put_suppliers(struct device *dev)
static int __rpm_callback(int (*cb)(struct device *), struct device *dev)
__releases(&dev->power.lock) __acquires(&dev->power.lock)
{
- bool use_links = dev->power.links_count > 0;
- bool get = false;
int retval, idx;
- bool put;
+ bool use_links = dev->power.links_count > 0;

if (dev->power.irq_safe) {
spin_unlock(&dev->power.lock);
- } else if (!use_links) {
- spin_unlock_irq(&dev->power.lock);
} else {
- get = dev->power.runtime_status == RPM_RESUMING;
-
spin_unlock_irq(&dev->power.lock);

- /* Resume suppliers if necessary. */
- if (get) {
+ /*
+ * Resume suppliers if necessary.
+ *
+ * The device's runtime PM status cannot change until this
+ * routine returns, so it is safe to read the status outside of
+ * the lock.
+ */
+ if (use_links && dev->power.runtime_status == RPM_RESUMING) {
idx = device_links_read_lock();

retval = rpm_get_suppliers(dev);
@@ -334,36 +334,24 @@ static int __rpm_callback(int (*cb)(struct device *), struct device *dev)

if (dev->power.irq_safe) {
spin_lock(&dev->power.lock);
- return retval;
- }
-
- spin_lock_irq(&dev->power.lock);
-
- if (!use_links)
- return retval;
-
- /*
- * If the device is suspending and the callback has returned success,
- * drop the usage counters of the suppliers that have been reference
- * counted on its resume.
- *
- * Do that if the resume fails too.
- */
- put = dev->power.runtime_status == RPM_SUSPENDING && !retval;
- if (put)
- __update_runtime_status(dev, RPM_SUSPENDED);
- else
- put = get && retval;
-
- if (put) {
- spin_unlock_irq(&dev->power.lock);
-
- idx = device_links_read_lock();
+ } else {
+ /*
+ * If the device is suspending and the callback has returned
+ * success, drop the usage counters of the suppliers that have
+ * been reference counted on its resume.
+ *
+ * Do that if resume fails too.
+ */
+ if (use_links
+ && ((dev->power.runtime_status == RPM_SUSPENDING && !retval)
+ || (dev->power.runtime_status == RPM_RESUMING && retval))) {
+ idx = device_links_read_lock();

-fail:
- rpm_put_suppliers(dev);
+ fail:
+ rpm_put_suppliers(dev);

- device_links_read_unlock(idx);
+ device_links_read_unlock(idx);
+ }

spin_lock_irq(&dev->power.lock);
}
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 9421c1ec86f7..1dabd366ec0b 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -658,6 +658,7 @@ config STM32_ADC_CORE
depends on ARCH_STM32 || COMPILE_TEST
depends on OF
depends on REGULATOR
+ depends on HAS_IOMEM
select IIO_BUFFER
select MFD_STM32_TIMERS
select IIO_STM32_TIMER_TRIGGER
diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
index 3680e0d47412..2640155b2644 100644
--- a/drivers/iio/adc/qcom-spmi-vadc.c
+++ b/drivers/iio/adc/qcom-spmi-vadc.c
@@ -606,7 +606,7 @@ static const struct vadc_channels vadc_chans[] = {
VADC_CHAN_NO_SCALE(P_MUX16_1_3, 1)

VADC_CHAN_NO_SCALE(LR_MUX1_BAT_THERM, 0)
- VADC_CHAN_NO_SCALE(LR_MUX2_BAT_ID, 0)
+ VADC_CHAN_VOLT(LR_MUX2_BAT_ID, 0, SCALE_DEFAULT)
VADC_CHAN_NO_SCALE(LR_MUX3_XO_THERM, 0)
VADC_CHAN_NO_SCALE(LR_MUX4_AMUX_THM1, 0)
VADC_CHAN_NO_SCALE(LR_MUX5_AMUX_THM2, 0)
diff --git a/drivers/iio/gyro/mpu3050-core.c b/drivers/iio/gyro/mpu3050-core.c
index 5ddebede31a6..33120ccff87f 100644
--- a/drivers/iio/gyro/mpu3050-core.c
+++ b/drivers/iio/gyro/mpu3050-core.c
@@ -549,6 +549,8 @@ static irqreturn_t mpu3050_trigger_handler(int irq, void *p)
MPU3050_FIFO_R,
&fifo_values[offset],
toread);
+ if (ret)
+ goto out_trigger_unlock;

dev_dbg(mpu3050->dev,
"%04x %04x %04x %04x %04x\n",
diff --git a/drivers/iio/humidity/hid-sensor-humidity.c b/drivers/iio/humidity/hid-sensor-humidity.c
index 4bc95f31c730..d8c30d94d742 100644
--- a/drivers/iio/humidity/hid-sensor-humidity.c
+++ b/drivers/iio/humidity/hid-sensor-humidity.c
@@ -28,7 +28,10 @@
struct hid_humidity_state {
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info humidity_attr;
- s32 humidity_data;
+ struct {
+ s32 humidity_data;
+ u64 timestamp __aligned(8);
+ } scan;
int scale_pre_decml;
int scale_post_decml;
int scale_precision;
@@ -138,9 +141,8 @@ static int humidity_proc_event(struct hid_sensor_hub_device *hsdev,
struct hid_humidity_state *humid_st = iio_priv(indio_dev);

if (atomic_read(&humid_st->common_attributes.data_ready))
- iio_push_to_buffers_with_timestamp(indio_dev,
- &humid_st->humidity_data,
- iio_get_time_ns(indio_dev));
+ iio_push_to_buffers_with_timestamp(indio_dev, &humid_st->scan,
+ iio_get_time_ns(indio_dev));

return 0;
}
@@ -155,7 +157,7 @@ static int humidity_capture_sample(struct hid_sensor_hub_device *hsdev,

switch (usage_id) {
case HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY:
- humid_st->humidity_data = *(s32 *)raw_data;
+ humid_st->scan.humidity_data = *(s32 *)raw_data;

return 0;
default:
diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c
index 46a569005a13..ec0f50ec813e 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/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c
index cf5a0c242609..3c25d6bb3764 100644
--- a/drivers/iio/light/hid-sensor-prox.c
+++ b/drivers/iio/light/hid-sensor-prox.c
@@ -37,6 +37,9 @@ struct prox_state {
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info prox_attr;
u32 human_presence;
+ int scale_pre_decml;
+ int scale_post_decml;
+ int scale_precision;
};

/* Channel definitions */
@@ -107,8 +110,9 @@ static int prox_read_raw(struct iio_dev *indio_dev,
ret_type = IIO_VAL_INT;
break;
case IIO_CHAN_INFO_SCALE:
- *val = prox_state->prox_attr.units;
- ret_type = IIO_VAL_INT;
+ *val = prox_state->scale_pre_decml;
+ *val2 = prox_state->scale_post_decml;
+ ret_type = prox_state->scale_precision;
break;
case IIO_CHAN_INFO_OFFSET:
*val = hid_sensor_convert_exponent(
@@ -248,6 +252,11 @@ static int prox_parse_report(struct platform_device *pdev,
HID_USAGE_SENSOR_HUMAN_PRESENCE,
&st->common_attributes.sensitivity);

+ st->scale_precision = hid_sensor_format_scale(
+ hsdev->usage,
+ &st->prox_attr,
+ &st->scale_pre_decml, &st->scale_post_decml);
+
return ret;
}

diff --git a/drivers/iio/temperature/hid-sensor-temperature.c b/drivers/iio/temperature/hid-sensor-temperature.c
index b592fc4f007e..d710a1a66817 100644
--- a/drivers/iio/temperature/hid-sensor-temperature.c
+++ b/drivers/iio/temperature/hid-sensor-temperature.c
@@ -28,7 +28,10 @@
struct temperature_state {
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info temperature_attr;
- s32 temperature_data;
+ struct {
+ s32 temperature_data;
+ u64 timestamp __aligned(8);
+ } scan;
int scale_pre_decml;
int scale_post_decml;
int scale_precision;
@@ -45,7 +48,7 @@ static const struct iio_chan_spec temperature_channels[] = {
BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_HYSTERESIS),
},
- IIO_CHAN_SOFT_TIMESTAMP(3),
+ IIO_CHAN_SOFT_TIMESTAMP(1),
};

/* Adjust channel real bits based on report descriptor */
@@ -136,9 +139,8 @@ static int temperature_proc_event(struct hid_sensor_hub_device *hsdev,
struct temperature_state *temp_st = iio_priv(indio_dev);

if (atomic_read(&temp_st->common_attributes.data_ready))
- iio_push_to_buffers_with_timestamp(indio_dev,
- &temp_st->temperature_data,
- iio_get_time_ns(indio_dev));
+ iio_push_to_buffers_with_timestamp(indio_dev, &temp_st->scan,
+ iio_get_time_ns(indio_dev));

return 0;
}
@@ -153,7 +155,7 @@ static int temperature_capture_sample(struct hid_sensor_hub_device *hsdev,

switch (usage_id) {
case HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE:
- temp_st->temperature_data = *(s32 *)raw_data;
+ temp_st->scan.temperature_data = *(s32 *)raw_data;
return 0;
default:
return -EINVAL;
diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile
index cce47a15a79f..aeb960cb096d 100644
--- a/drivers/misc/lkdtm/Makefile
+++ b/drivers/misc/lkdtm/Makefile
@@ -13,7 +13,7 @@ KCOV_INSTRUMENT_rodata.o := n

OBJCOPYFLAGS :=
OBJCOPYFLAGS_rodata_objcopy.o := \
- --rename-section .text=.rodata,alloc,readonly,load
+ --rename-section .noinstr.text=.rodata,alloc,readonly,load
targets += rodata.o rodata_objcopy.o
$(obj)/rodata_objcopy.o: $(obj)/rodata.o FORCE
$(call if_changed,objcopy)
diff --git a/drivers/misc/lkdtm/rodata.c b/drivers/misc/lkdtm/rodata.c
index 58d180af72cf..baacb876d1d9 100644
--- a/drivers/misc/lkdtm/rodata.c
+++ b/drivers/misc/lkdtm/rodata.c
@@ -5,7 +5,7 @@
*/
#include "lkdtm.h"

-void notrace lkdtm_rodata_do_nothing(void)
+void noinstr lkdtm_rodata_do_nothing(void)
{
/* Does nothing. We just want an architecture agnostic "return". */
}
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 134e14e778f8..8798274dc3ba 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -644,8 +644,11 @@ static int nvme_rdma_alloc_io_queues(struct nvme_rdma_ctrl *ctrl)
return ret;

ctrl->ctrl.queue_count = nr_io_queues + 1;
- if (ctrl->ctrl.queue_count < 2)
- return 0;
+ if (ctrl->ctrl.queue_count < 2) {
+ dev_err(ctrl->ctrl.device,
+ "unable to set any I/O queues\n");
+ return -ENOMEM;
+ }

dev_info(ctrl->ctrl.device,
"creating %d I/O queues.\n", nr_io_queues);
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 2b492ad55f0e..1a35d73c39c3 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -770,9 +770,20 @@ 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 cdbfa5df3a51..dbfa0b55d31a 100644
--- a/drivers/pci/hotplug/rpadlpar_sysfs.c
+++ b/drivers/pci/hotplug/rpadlpar_sysfs.c
@@ -34,12 +34,11 @@ 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)
@@ -65,12 +64,11 @@ 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 f1951c432766..2c70e311943a 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -1843,7 +1843,7 @@ 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'))
@@ -1851,7 +1851,7 @@ 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 4cfcc73f3979..d85bb3ba8263 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1077,7 +1077,7 @@ 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;
}
@@ -1152,7 +1152,7 @@ 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 5b8b2ca4376c..3d4710cc34bc 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -109,21 +109,27 @@ 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 7c24d1ce1088..33f77e59aa6f 100644
--- a/drivers/usb/gadget/usbstring.c
+++ b/drivers/usb/gadget/usbstring.c
@@ -55,9 +55,9 @@ usb_gadget_get_string (const 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/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 96cb0409dd89..737b765d0f6e 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -651,6 +651,13 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
need_auto_sense = 1;
}

+ /* Some devices (Kindle) require another command after SYNC CACHE */
+ if ((us->fflags & US_FL_SENSE_AFTER_SYNC) &&
+ srb->cmnd[0] == SYNCHRONIZE_CACHE) {
+ usb_stor_dbg(us, "-- sense after SYNC CACHE\n");
+ need_auto_sense = 1;
+ }
+
/*
* If we have a failure, we're going to do a REQUEST_SENSE
* automatically. Note that we differentiate between a command
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 88275842219e..861153d294b6 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2211,6 +2211,18 @@ UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0200,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_NO_READ_DISC_INFO ),

+/*
+ * Reported by Matthias Schwarzott <zzam@xxxxxxxxxx>
+ * The Amazon Kindle treats SYNCHRONIZE CACHE as an indication that
+ * the host may be finished with it, and automatically ejects its
+ * emulated media unless it receives another command within one second.
+ */
+UNUSUAL_DEV( 0x1949, 0x0004, 0x0000, 0x9999,
+ "Amazon",
+ "Kindle",
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_SENSE_AFTER_SYNC ),
+
/*
* Reported by Oliver Neukum <oneukum@xxxxxxxx>
* This device morphes spontaneously into another device if the access
diff --git a/drivers/usb/usbip/vudc_sysfs.c b/drivers/usb/usbip/vudc_sysfs.c
index 741852bd148e..1bde09e5cb47 100644
--- a/drivers/usb/usbip/vudc_sysfs.c
+++ b/drivers/usb/usbip/vudc_sysfs.c
@@ -175,7 +175,7 @@ static ssize_t usbip_sockfd_store(struct device *dev,

udc->ud.tcp_socket = socket;
udc->ud.tcp_rx = tcp_rx;
- udc->ud.tcp_rx = tcp_tx;
+ udc->ud.tcp_tx = tcp_tx;
udc->ud.status = SDEV_ST_USED;

spin_unlock_irq(&udc->ud.lock);
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 49db37b1f6e3..2bdd24425a68 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1414,7 +1414,9 @@ get_old_root(struct btrfs_root *root, u64 time_seq)
"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/btrfs/inode.c b/fs/btrfs/inode.c
index 64d459ca76d0..8c6f619c9ee6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9472,7 +9472,7 @@ int __init btrfs_init_cachep(void)

btrfs_free_space_bitmap_cachep = kmem_cache_create("btrfs_free_space_bitmap",
PAGE_SIZE, PAGE_SIZE,
- SLAB_RED_ZONE, NULL);
+ SLAB_MEM_SPREAD, NULL);
if (!btrfs_free_space_bitmap_cachep)
goto fail;

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 70412944b267..59643acb6d67 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -891,9 +891,12 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
/*
* Compounding is never used during session establish.
*/
- if ((ses->status == CifsNew) || (optype & CIFS_NEG_OP))
+ if ((ses->status == CifsNew) || (optype & CIFS_NEG_OP)) {
+ mutex_lock(&ses->server->srv_mutex);
smb311_update_preauth_hash(ses, rqst[0].rq_iov,
rqst[0].rq_nvec);
+ mutex_unlock(&ses->server->srv_mutex);
+ }

if (timeout == CIFS_ASYNC_OP)
goto out;
@@ -964,7 +967,9 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
.iov_base = resp_iov[0].iov_base,
.iov_len = resp_iov[0].iov_len
};
+ mutex_lock(&ses->server->srv_mutex);
smb311_update_preauth_hash(ses, &iov, 1);
+ mutex_unlock(&ses->server->srv_mutex);
}

out:
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 296ffe92e250..1c6fd526ea97 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5266,7 +5266,7 @@ 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;
@@ -5378,9 +5378,9 @@ 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/namei.c b/fs/ext4/namei.c
index 0dde6385a125..5f701d8dce47 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -3440,6 +3440,31 @@ 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)
{
@@ -3736,8 +3761,8 @@ 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/xattr.c b/fs/ext4/xattr.c
index 899567d74c2a..4e95b4f8a2ad 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -2419,7 +2419,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
* external inode if possible.
*/
if (ext4_has_feature_ea_inode(inode->i_sb) &&
- !i.in_inode) {
+ i.value_len && !i.in_inode) {
i.in_inode = 1;
goto retry_inode;
}
diff --git a/fs/select.c b/fs/select.c
index 4a6b6e4b21cb..11a7051075b4 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -1003,10 +1003,9 @@ 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;
}

@@ -1028,7 +1027,6 @@ 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;

@@ -1039,7 +1037,7 @@ 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/asm-generic/sections.h b/include/asm-generic/sections.h
index 849cd8eb5ca0..ea5987bb0b84 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -53,6 +53,9 @@ extern char __ctors_start[], __ctors_end[];
/* Start and end of .opd section - used for function descriptors. */
extern char __start_opd[], __end_opd[];

+/* Start and end of instrumentation protected text section */
+extern char __noinstr_text_start[], __noinstr_text_end[];
+
extern __visible const void __nosave_begin, __nosave_end;

/* Function descriptor handling (if any). Override in asm/sections.h */
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 2d632a74cc5e..88484ee023ca 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -482,6 +482,15 @@
__security_initcall_end = .; \
}

+/*
+ * Non-instrumentable text section
+ */
+#define NOINSTR_TEXT \
+ ALIGN_FUNCTION(); \
+ __noinstr_text_start = .; \
+ *(.noinstr.text) \
+ __noinstr_text_end = .;
+
/*
* .text section. Map to function alignment to avoid address changes
* during second ld run in second ld pass when generating System.map
@@ -496,6 +505,7 @@
*(TEXT_MAIN .text.fixup) \
*(.text.unlikely .text.unlikely.*) \
*(.text.unknown .text.unknown.*) \
+ NOINSTR_TEXT \
*(.text..refcount) \
*(.ref.text) \
MEM_KEEP(init.text*) \
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 6b6505e3b2c7..6a53300cbd1e 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -129,11 +129,65 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
".pushsection .discard.unreachable\n\t" \
".long 999b - .\n\t" \
".popsection\n\t"
+
+#ifdef CONFIG_DEBUG_ENTRY
+/* Begin/end of an instrumentation safe region */
+#define instrumentation_begin() ({ \
+ asm volatile("%c0:\n\t" \
+ ".pushsection .discard.instr_begin\n\t" \
+ ".long %c0b - .\n\t" \
+ ".popsection\n\t" : : "i" (__COUNTER__)); \
+})
+
+/*
+ * Because instrumentation_{begin,end}() can nest, objtool validation considers
+ * _begin() a +1 and _end() a -1 and computes a sum over the instructions.
+ * When the value is greater than 0, we consider instrumentation allowed.
+ *
+ * There is a problem with code like:
+ *
+ * noinstr void foo()
+ * {
+ * instrumentation_begin();
+ * ...
+ * if (cond) {
+ * instrumentation_begin();
+ * ...
+ * instrumentation_end();
+ * }
+ * bar();
+ * instrumentation_end();
+ * }
+ *
+ * If instrumentation_end() would be an empty label, like all the other
+ * annotations, the inner _end(), which is at the end of a conditional block,
+ * would land on the instruction after the block.
+ *
+ * If we then consider the sum of the !cond path, we'll see that the call to
+ * bar() is with a 0-value, even though, we meant it to happen with a positive
+ * value.
+ *
+ * To avoid this, have _end() be a NOP instruction, this ensures it will be
+ * part of the condition block and does not escape.
+ */
+#define instrumentation_end() ({ \
+ asm volatile("%c0: nop\n\t" \
+ ".pushsection .discard.instr_end\n\t" \
+ ".long %c0b - .\n\t" \
+ ".popsection\n\t" : : "i" (__COUNTER__)); \
+})
+#endif /* CONFIG_DEBUG_ENTRY */
+
#else
#define annotate_reachable()
#define annotate_unreachable()
#endif

+#ifndef instrumentation_begin
+#define instrumentation_begin() do { } while(0)
+#define instrumentation_end() do { } while(0)
+#endif
+
#ifndef ASM_UNREACHABLE
# define ASM_UNREACHABLE
#endif
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index 2b8ed70c4c77..c01100318b25 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -234,6 +234,12 @@ struct ftrace_likely_data {
#define notrace __attribute__((no_instrument_function))
#endif

+#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
+/* Section for code which can't be instrumented at all */
+#define noinstr \
+ noinline notrace __attribute((__section__(".noinstr.text")))
+#endif
+
/*
* it doesn't make sense on ARM (currently the only user of __naked)
* to trace naked functions because then mcount is called without
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index 8d8821b3689a..62dbecfe9132 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -11,6 +11,7 @@
#include <linux/types.h>
#include <linux/bug.h>
#include <linux/restart_block.h>
+#include <linux/errno.h>

#ifdef CONFIG_THREAD_INFO_IN_TASK
/*
@@ -39,6 +40,18 @@ enum {

#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;
+}
+
#ifndef THREAD_ALIGN
#define THREAD_ALIGN THREAD_SIZE
#endif
diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h
index a7f7ebdd3069..0a958c794832 100644
--- a/include/linux/usb_usual.h
+++ b/include/linux/usb_usual.h
@@ -86,6 +86,8 @@
/* lies about caching, so always sync */ \
US_FLAG(NO_SAME, 0x40000000) \
/* Cannot handle WRITE_SAME */ \
+ US_FLAG(SENSE_AFTER_SYNC, 0x80000000) \
+ /* Do REQUEST_SENSE after SYNCHRONIZE_CACHE */ \

#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };
diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index d5a5caec8fbc..3f376688bd04 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -364,6 +364,9 @@ 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 224adcdac6c1..7d0d8a45f9ae 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2857,14 +2857,13 @@ static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
goto out;

restart = &current->restart_block;
- restart->fn = futex_wait_restart;
restart->futex.uaddr = uaddr;
restart->futex.val = val;
restart->futex.time = *abs_time;
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 3b66c77670d9..c377dbb869f8 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -987,11 +987,15 @@ 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 9eece67f29f3..6a2ba39889bd 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -822,9 +822,9 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
if (flags == TIMER_ABSTIME)
return -ERESTARTNOHAND;

- restart->fn = alarm_timer_nsleep_restart;
restart->nanosleep.clockid = type;
restart->nanosleep.expires = exp;
+ set_restart_fn(restart, alarm_timer_nsleep_restart);
return ret;
}

diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index ccde4dc8462c..0e04b24cec81 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1771,9 +1771,9 @@ long hrtimer_nanosleep(const struct timespec64 *rqtp,
}

restart = &current->restart_block;
- restart->fn = hrtimer_nanosleep_restart;
restart->nanosleep.clockid = t.timer.base->clockid;
restart->nanosleep.expires = hrtimer_get_expires_tv64(&t.timer);
+ set_restart_fn(restart, hrtimer_nanosleep_restart);
out:
destroy_hrtimer_on_stack(&t.timer);
return ret;
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index d62d7ae5201c..bfaa44a80c03 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -1371,8 +1371,8 @@ static int posix_cpu_nsleep(const clockid_t which_clock, int flags,
if (flags & TIMER_ABSTIME)
return -ERESTARTNOHAND;

- restart_block->fn = posix_cpu_nsleep_restart;
restart_block->nanosleep.clockid = which_clock;
+ set_restart_fn(restart_block, posix_cpu_nsleep_restart);
}
return error;
}
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index 8f3e1f0a1781..0c7cacd854e0 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -271,7 +271,7 @@ int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
if (len == 0 || len & 3)
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 d65f8d35de87..11d393c04772 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -1330,7 +1330,7 @@ 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:
@@ -1339,6 +1339,8 @@ 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");
@@ -1347,7 +1349,7 @@ 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 709c082dc905..4b56b949a463 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -1052,7 +1052,7 @@ 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;
@@ -1060,7 +1060,7 @@ 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 d183d4aee822..cf2272a90f13 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
@@ -308,9 +308,9 @@ 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 = 0;
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 91a80036c05d..7c693bd775c1 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -895,7 +895,7 @@ static void check_section(const char *modname, struct elf_info *elf,

#define DATA_SECTIONS ".data", ".data.rel"
#define TEXT_SECTIONS ".text", ".text.unlikely", ".sched.text", \
- ".kprobes.text", ".cpuidle.text"
+ ".kprobes.text", ".cpuidle.text", ".noinstr.text"
#define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \
".fixup", ".entry.text", ".exception.text", ".text.*", \
".coldtext"
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 0a196be90b2e..b9f7b23ae378 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -4029,7 +4029,7 @@ int snd_hda_gen_add_micmute_led(struct hda_codec *codec,

spec->micmute_led.led_mode = MICMUTE_LED_FOLLOW_MUTE;
spec->micmute_led.capture = 0;
- spec->micmute_led.led_value = 0;
+ spec->micmute_led.led_value = -1;
spec->micmute_led.old_hook = spec->cap_sync_hook;
spec->micmute_led.update = hook;
spec->cap_sync_hook = update_micmute_led;
diff --git a/sound/soc/codecs/ak4458.c b/sound/soc/codecs/ak4458.c
index 3bd57c02e6fd..0b35b84abb61 100644
--- a/sound/soc/codecs/ak4458.c
+++ b/sound/soc/codecs/ak4458.c
@@ -642,6 +642,7 @@ static const struct of_device_id ak4458_of_match[] = {
{ .compatible = "asahi-kasei,ak4458", },
{ },
};
+MODULE_DEVICE_TABLE(of, ak4458_of_match);

static struct i2c_driver ak4458_i2c_driver = {
.driver = {
diff --git a/sound/soc/codecs/ak5558.c b/sound/soc/codecs/ak5558.c
index 448bb90c9c8e..73c418517f8d 100644
--- a/sound/soc/codecs/ak5558.c
+++ b/sound/soc/codecs/ak5558.c
@@ -396,6 +396,7 @@ static const struct of_device_id ak5558_i2c_dt_ids[] = {
{ .compatible = "asahi-kasei,ak5558"},
{ }
};
+MODULE_DEVICE_TABLE(of, ak5558_i2c_dt_ids);

static struct i2c_driver ak5558_i2c_driver = {
.driver = {
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 0e2bdad373d6..d6a1573b457a 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -873,6 +873,7 @@ static int fsl_ssi_hw_free(struct snd_pcm_substream *substream,
static int _fsl_ssi_set_dai_fmt(struct fsl_ssi *ssi, unsigned int fmt)
{
u32 strcr = 0, scr = 0, stcr, srcr, mask;
+ unsigned int slots;

ssi->dai_fmt = fmt;

@@ -904,10 +905,11 @@ static int _fsl_ssi_set_dai_fmt(struct fsl_ssi *ssi, unsigned int fmt)
return -EINVAL;
}

+ slots = ssi->slots ? : 2;
regmap_update_bits(ssi->regs, REG_SSI_STCCR,
- SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(2));
+ SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(slots));
regmap_update_bits(ssi->regs, REG_SSI_SRCCR,
- SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(2));
+ SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(slots));

/* Data on rising edge of bclk, frame low, 1clk before data */
strcr |= SSI_STCR_TFSI | SSI_STCR_TSCKP | SSI_STCR_TEFS;
diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 7c17f17ea2cd..7f91b6013ddc 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -31,8 +31,11 @@ FEATURE_TESTS_BASIC := \
backtrace \
dwarf \
dwarf_getlocations \
+ eventfd \
fortify-source \
sync-compare-and-swap \
+ get_current_dir_name \
+ gettid \
glibc \
gtk2 \
gtk2-infobar \
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index c4845b66b9ba..6df574750bc9 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -5,8 +5,10 @@ FILES= \
test-bionic.bin \
test-dwarf.bin \
test-dwarf_getlocations.bin \
+ test-eventfd.bin \
test-fortify-source.bin \
test-sync-compare-and-swap.bin \
+ test-get_current_dir_name.bin \
test-glibc.bin \
test-gtk2.bin \
test-gtk2-infobar.bin \
@@ -52,6 +54,7 @@ FILES= \
test-get_cpuid.bin \
test-sdt.bin \
test-cxx.bin \
+ test-gettid.bin \
test-jvmti.bin \
test-sched_getcpu.bin \
test-setns.bin \
@@ -99,6 +102,12 @@ $(OUTPUT)test-bionic.bin:
$(OUTPUT)test-libelf.bin:
$(BUILD) -lelf

+$(OUTPUT)test-eventfd.bin:
+ $(BUILD)
+
+$(OUTPUT)test-get_current_dir_name.bin:
+ $(BUILD)
+
$(OUTPUT)test-glibc.bin:
$(BUILD)

@@ -254,6 +263,9 @@ $(OUTPUT)test-sdt.bin:
$(OUTPUT)test-cxx.bin:
$(BUILDXX) -std=gnu++11

+$(OUTPUT)test-gettid.bin:
+ $(BUILD)
+
$(OUTPUT)test-jvmti.bin:
$(BUILD)

diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 8dc20a61341f..8282bbe547c4 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -34,6 +34,14 @@
# include "test-libelf-mmap.c"
#undef main

+#define main main_test_get_current_dir_name
+# include "test-get_current_dir_name.c"
+#undef main
+
+#define main main_test_gettid
+# include "test-gettid.c"
+#undef main
+
#define main main_test_glibc
# include "test-glibc.c"
#undef main
@@ -46,6 +54,10 @@
# include "test-dwarf_getlocations.c"
#undef main

+#define main main_test_eventfd
+# include "test-eventfd.c"
+#undef main
+
#define main main_test_libelf_getphdrnum
# include "test-libelf-getphdrnum.c"
#undef main
@@ -174,9 +186,12 @@ int main(int argc, char *argv[])
main_test_hello();
main_test_libelf();
main_test_libelf_mmap();
+ main_test_get_current_dir_name();
+ main_test_gettid();
main_test_glibc();
main_test_dwarf();
main_test_dwarf_getlocations();
+ main_test_eventfd();
main_test_libelf_getphdrnum();
main_test_libelf_gelf_getnote();
main_test_libelf_getshdrstrndx();
diff --git a/tools/build/feature/test-eventfd.c b/tools/build/feature/test-eventfd.c
new file mode 100644
index 000000000000..f4de7ef00ccb
--- /dev/null
+++ b/tools/build/feature/test-eventfd.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018, Red Hat Inc, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
+
+#include <sys/eventfd.h>
+
+int main(void)
+{
+ return eventfd(0, EFD_NONBLOCK);
+}
diff --git a/tools/build/feature/test-get_current_dir_name.c b/tools/build/feature/test-get_current_dir_name.c
new file mode 100644
index 000000000000..573000f93212
--- /dev/null
+++ b/tools/build/feature/test-get_current_dir_name.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <stdlib.h>
+
+int main(void)
+{
+ free(get_current_dir_name());
+ return 0;
+}
diff --git a/tools/build/feature/test-gettid.c b/tools/build/feature/test-gettid.c
new file mode 100644
index 000000000000..ef24e42d3f1b
--- /dev/null
+++ b/tools/build/feature/test-gettid.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
+#define _GNU_SOURCE
+#include <unistd.h>
+
+int main(void)
+{
+ return gettid();
+}
+
+#undef _GNU_SOURCE
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index ae0c5bee8014..a328beb9f505 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -310,6 +310,18 @@ ifndef NO_BIONIC
endif
endif

+ifeq ($(feature-eventfd), 1)
+ CFLAGS += -DHAVE_EVENTFD
+endif
+
+ifeq ($(feature-get_current_dir_name), 1)
+ CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
+endif
+
+ifeq ($(feature-gettid), 1)
+ CFLAGS += -DHAVE_GETTID
+endif
+
ifdef NO_LIBELF
NO_DWARF := 1
NO_DEMANGLE := 1
diff --git a/tools/perf/jvmti/jvmti_agent.c b/tools/perf/jvmti/jvmti_agent.c
index f7eb63cbbc65..88108598d6e9 100644
--- a/tools/perf/jvmti/jvmti_agent.c
+++ b/tools/perf/jvmti/jvmti_agent.c
@@ -45,10 +45,12 @@
static char jit_path[PATH_MAX];
static void *marker_addr;

+#ifndef HAVE_GETTID
static inline pid_t gettid(void)
{
return (pid_t)syscall(__NR_gettid);
}
+#endif

static int get_e_machine(struct jitheader *hdr)
{
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 7efe15b9618d..4eaac6aaaefe 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -10,6 +10,7 @@ libperf-y += evlist.o
libperf-y += evsel.o
libperf-y += evsel_fprintf.o
libperf-y += find_bit.o
+libperf-y += get_current_dir_name.o
libperf-y += kallsyms.o
libperf-y += levenshtein.o
libperf-y += llvm-utils.o
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
index 432b8560cf51..e7bd19c384ae 100644
--- a/tools/perf/util/expr.y
+++ b/tools/perf/util/expr.y
@@ -10,7 +10,8 @@
#define MAXIDLEN 256
%}

-%pure-parser
+%define api.pure full
+
%parse-param { double *final_val }
%parse-param { struct parse_ctx *ctx }
%parse-param { const char **pp }
diff --git a/tools/perf/util/get_current_dir_name.c b/tools/perf/util/get_current_dir_name.c
new file mode 100644
index 000000000000..267aa609a582
--- /dev/null
+++ b/tools/perf/util/get_current_dir_name.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018, Red Hat Inc, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
+//
+#ifndef HAVE_GET_CURRENT_DIR_NAME
+#include "util.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdlib.h>
+
+/* Android's 'bionic' library, for one, doesn't have this */
+
+char *get_current_dir_name(void)
+{
+ char pwd[PATH_MAX];
+
+ return getcwd(pwd, sizeof(pwd)) == NULL ? NULL : strdup(pwd);
+}
+#endif // HAVE_GET_CURRENT_DIR_NAME
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index da8fe57691b8..8d7578be708a 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -1,4 +1,4 @@
-%pure-parser
+%define api.pure full
%parse-param {void *_parse_state}
%parse-param {void *scanner}
%lex-param {void* scanner}
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 8c01b2cfdb1a..2efec9e77753 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -57,6 +57,10 @@ int fetch_kernel_version(unsigned int *puint,

const char *perf_tip(const char *dirpath);

+#ifndef HAVE_GET_CURRENT_DIR_NAME
+char *get_current_dir_name(void);
+#endif
+
#ifndef HAVE_SCHED_GETCPU_SUPPORT
int sched_getcpu(void);
#endif