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authorOlaf Hering <ohering@suse.de>2019-07-09 10:30:45 +0200
committerOlaf Hering <ohering@suse.de>2019-07-09 10:30:45 +0200
commita4b8941da06f64c43ac73f775de45b0ee2c9b833 (patch)
tree2c09d5855abd4e9b33a67313f6594526a482d607
parent8d049c67d0cb1fdfa6fa08967c2c2ed6c0bb5c8f (diff)
parentdeef1832a5deace965f02d54fafcb2ec29f91b9b (diff)
Merge remote-tracking branch 'kerncvs/SLE15' into SLE15-AZURErpm-4.12.14-5.33
-rw-r--r--arch/x86/kernel/ftrace.c3
-rw-r--r--block/blk-core.c2
-rw-r--r--block/blk-mq-sysfs.c6
-rw-r--r--block/blk-mq.c8
-rw-r--r--block/blk-mq.h2
-rw-r--r--drivers/acpi/nfit/core.c53
-rw-r--r--drivers/acpi/nfit/nfit.h8
-rw-r--r--drivers/clk/rockchip/clk-rk3288.c11
-rw-r--r--drivers/clk/tegra/clk-pll.c4
-rw-r--r--drivers/dma/imx-sdma.c4
-rw-r--r--drivers/hwtracing/coresight/coresight-etb10.c4
-rw-r--r--drivers/hwtracing/coresight/coresight-etm4x.c3
-rw-r--r--drivers/nvdimm/pfn_devs.c2
-rw-r--r--drivers/nvme/host/core.c1
-rw-r--r--drivers/scsi/qla2xxx/qla_attr.c4
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.c2
-rw-r--r--drivers/staging/comedi/comedidev.h2
-rw-r--r--drivers/staging/comedi/drivers.c33
-rw-r--r--drivers/staging/comedi/drivers/ni_mio_common.c10
-rw-r--r--include/linux/siphash.h5
-rw-r--r--include/net/net_namespace.h2
-rw-r--r--include/net/netns/hash.h15
-rw-r--r--include/net/netns/ipv4.h1
-rw-r--r--kernel/trace/ftrace.c10
-rw-r--r--kernel/trace/trace.c10
-rw-r--r--lib/sbitmap.c2
-rw-r--r--net/core/net_namespace.c1
-rw-r--r--net/ipv4/route.c11
-rw-r--r--net/ipv4/tcp_output.c2
-rw-r--r--net/ipv6/output_core.c29
-rw-r--r--security/apparmor/policy_unpack.c2
31 files changed, 168 insertions, 84 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index c98f757395a2..4dd696907d3c 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -21,6 +21,7 @@
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
+#include <linux/memory.h>
#include <trace/syscall.h>
@@ -34,6 +35,7 @@
int ftrace_arch_code_modify_prepare(void)
{
+ mutex_lock(&text_mutex);
set_kernel_text_rw();
set_all_modules_text_rw();
return 0;
@@ -43,6 +45,7 @@ int ftrace_arch_code_modify_post_process(void)
{
set_all_modules_text_ro();
set_kernel_text_ro();
+ mutex_unlock(&text_mutex);
return 0;
}
diff --git a/block/blk-core.c b/block/blk-core.c
index 191cd54691db..c1bbe1959646 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -725,7 +725,7 @@ void blk_cleanup_queue(struct request_queue *q)
blk_exit_queue(q);
if (q->mq_ops)
- blk_mq_free_queue(q);
+ blk_mq_exit_queue(q);
percpu_ref_exit(&q->q_usage_counter);
spin_lock_irq(lock);
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
index a54b4b070f1c..359284a06511 100644
--- a/block/blk-mq-sysfs.c
+++ b/block/blk-mq-sysfs.c
@@ -19,8 +19,14 @@ static void blk_mq_sysfs_release(struct kobject *kobj)
static void blk_mq_hw_sysfs_release(struct kobject *kobj)
{
+ extern void blk_free_flush_queue(struct blk_flush_queue *q);
struct blk_mq_hw_ctx *hctx = container_of(kobj, struct blk_mq_hw_ctx,
kobj);
+
+ if (hctx->flags & BLK_MQ_F_BLOCKING)
+ cleanup_srcu_struct(hctx->queue_rq_srcu);
+ blk_free_flush_queue(hctx->fq);
+ sbitmap_free(&hctx->ctx_map);
free_cpumask_var(hctx->cpumask);
kfree(hctx->ctxs);
kfree(hctx);
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 6f79ba87108f..15ebbbb4ca2a 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1999,12 +1999,7 @@ static void blk_mq_exit_hctx(struct request_queue *q,
if (set->ops->exit_hctx)
set->ops->exit_hctx(hctx, hctx_idx);
- if (hctx->flags & BLK_MQ_F_BLOCKING)
- cleanup_srcu_struct(hctx->queue_rq_srcu);
-
blk_mq_remove_cpuhp(hctx);
- blk_free_flush_queue(hctx->fq);
- sbitmap_free(&hctx->ctx_map);
}
static void blk_mq_exit_hw_queues(struct request_queue *q,
@@ -2539,7 +2534,8 @@ err_exit:
}
EXPORT_SYMBOL(blk_mq_init_allocated_queue);
-void blk_mq_free_queue(struct request_queue *q)
+/* tags can _not_ be used after returning from blk_mq_exit_queue */
+void blk_mq_exit_queue(struct request_queue *q)
{
struct blk_mq_tag_set *set = q->tag_set;
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 258488801ccb..907ae5d26b22 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -27,7 +27,7 @@ struct blk_mq_ctx {
void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async);
void blk_mq_freeze_queue(struct request_queue *q);
-void blk_mq_free_queue(struct request_queue *q);
+void blk_mq_exit_queue(struct request_queue *q);
int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr);
void blk_mq_wake_waiters(struct request_queue *q);
bool blk_mq_dispatch_rq_list(struct request_queue *, struct list_head *);
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 107c95dc04a8..2cfd9b68eea4 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1299,19 +1299,30 @@ static ssize_t scrub_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm_bus_descriptor *nd_desc;
+ struct acpi_nfit_desc *acpi_desc;
ssize_t rc = -ENXIO;
+ bool busy;
device_lock(dev);
nd_desc = dev_get_drvdata(dev);
- if (nd_desc) {
- struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
+ if (!nd_desc) {
+ device_unlock(dev);
+ return rc;
+ }
+ acpi_desc = to_acpi_desc(nd_desc);
- mutex_lock(&acpi_desc->init_mutex);
- rc = sprintf(buf, "%d%s", acpi_desc->scrub_count,
- acpi_desc->scrub_busy
- && !acpi_desc->cancel ? "+\n" : "\n");
- mutex_unlock(&acpi_desc->init_mutex);
+ mutex_lock(&acpi_desc->init_mutex);
+ busy = test_bit(ARS_BUSY, &acpi_desc->scrub_flags)
+ && !test_bit(ARS_CANCEL, &acpi_desc->scrub_flags);
+ rc = sprintf(buf, "%d%s", acpi_desc->scrub_count, busy ? "+\n" : "\n");
+ /* Allow an admin to poll the busy state at a higher rate */
+ if (busy && capable(CAP_SYS_RAWIO) && !test_and_set_bit(ARS_POLL,
+ &acpi_desc->scrub_flags)) {
+ acpi_desc->scrub_tmo = 1;
+ mod_delayed_work(nfit_wq, &acpi_desc->dwork, HZ);
}
+
+ mutex_unlock(&acpi_desc->init_mutex);
device_unlock(dev);
return rc;
}
@@ -2518,7 +2529,10 @@ static int ars_start(struct acpi_nfit_desc *acpi_desc,
if (rc < 0)
return rc;
- return cmd_rc;
+ if (cmd_rc < 0)
+ return cmd_rc;
+ set_bit(ARS_VALID, &acpi_desc->scrub_flags);
+ return 0;
}
static int ars_continue(struct acpi_nfit_desc *acpi_desc)
@@ -2612,6 +2626,17 @@ static int ars_status_process_records(struct acpi_nfit_desc *acpi_desc)
*/
if (ars_status->out_length < 44)
return 0;
+
+ /*
+ * Ignore potentially stale results that are only refreshed
+ * after a start-ARS event.
+ */
+ if (!test_and_clear_bit(ARS_VALID, &acpi_desc->scrub_flags)) {
+ dev_dbg(acpi_desc->dev, "skip %d stale records\n",
+ ars_status->num_records);
+ return 0;
+ }
+
for (i = 0; i < ars_status->num_records; i++) {
/* only process full records */
if (ars_status->out_length
@@ -2951,7 +2976,7 @@ static unsigned int __acpi_nfit_scrub(struct acpi_nfit_desc *acpi_desc,
lockdep_assert_held(&acpi_desc->init_mutex);
- if (acpi_desc->cancel)
+ if (test_bit(ARS_CANCEL, &acpi_desc->scrub_flags))
return 0;
if (query_rc == -EBUSY) {
@@ -3025,7 +3050,7 @@ static void __sched_ars(struct acpi_nfit_desc *acpi_desc, unsigned int tmo)
{
lockdep_assert_held(&acpi_desc->init_mutex);
- acpi_desc->scrub_busy = 1;
+ set_bit(ARS_BUSY, &acpi_desc->scrub_flags);
/* note this should only be set from within the workqueue */
if (tmo)
acpi_desc->scrub_tmo = tmo;
@@ -3041,7 +3066,7 @@ static void notify_ars_done(struct acpi_nfit_desc *acpi_desc)
{
lockdep_assert_held(&acpi_desc->init_mutex);
- acpi_desc->scrub_busy = 0;
+ clear_bit(ARS_BUSY, &acpi_desc->scrub_flags);
acpi_desc->scrub_count++;
if (acpi_desc->scrub_count_state)
sysfs_notify_dirent(acpi_desc->scrub_count_state);
@@ -3062,6 +3087,7 @@ static void acpi_nfit_scrub(struct work_struct *work)
else
notify_ars_done(acpi_desc);
memset(acpi_desc->ars_status, 0, acpi_desc->max_ars);
+ clear_bit(ARS_POLL, &acpi_desc->scrub_flags);
mutex_unlock(&acpi_desc->init_mutex);
}
@@ -3096,6 +3122,7 @@ static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc)
struct nfit_spa *nfit_spa;
int rc;
+ set_bit(ARS_VALID, &acpi_desc->scrub_flags);
list_for_each_entry(nfit_spa, &acpi_desc->spas, list) {
switch (nfit_spa_type(nfit_spa->spa)) {
case NFIT_SPA_VOLATILE:
@@ -3314,7 +3341,7 @@ int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc,
struct nfit_spa *nfit_spa;
mutex_lock(&acpi_desc->init_mutex);
- if (acpi_desc->cancel) {
+ if (test_bit(ARS_CANCEL, &acpi_desc->scrub_flags)) {
mutex_unlock(&acpi_desc->init_mutex);
return 0;
}
@@ -3394,7 +3421,7 @@ void acpi_nfit_shutdown(void *data)
mutex_unlock(&acpi_desc_lock);
mutex_lock(&acpi_desc->init_mutex);
- acpi_desc->cancel = 1;
+ set_bit(ARS_CANCEL, &acpi_desc->scrub_flags);
cancel_delayed_work_sync(&acpi_desc->dwork);
mutex_unlock(&acpi_desc->init_mutex);
diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h
index 08b7743c75dd..92436a6bea0a 100644
--- a/drivers/acpi/nfit/nfit.h
+++ b/drivers/acpi/nfit/nfit.h
@@ -181,6 +181,13 @@ struct nfit_mem {
bool has_lsw;
};
+enum scrub_flags {
+ ARS_BUSY,
+ ARS_CANCEL,
+ ARS_POLL,
+ ARS_VALID,
+};
+
struct acpi_nfit_desc {
struct nvdimm_bus_descriptor nd_desc;
struct acpi_table_header acpi_header;
@@ -216,6 +223,7 @@ struct acpi_nfit_desc {
struct delayed_work dwork;
unsigned int scrub_busy:1;
struct nfit_spa *scrub_spa;
+ unsigned long scrub_flags;
#endif
};
diff --git a/drivers/clk/rockchip/clk-rk3288.c b/drivers/clk/rockchip/clk-rk3288.c
index 04a963d9392a..122759fe6166 100644
--- a/drivers/clk/rockchip/clk-rk3288.c
+++ b/drivers/clk/rockchip/clk-rk3288.c
@@ -832,6 +832,9 @@ static const int rk3288_saved_cru_reg_ids[] = {
RK3288_CLKSEL_CON(10),
RK3288_CLKSEL_CON(33),
RK3288_CLKSEL_CON(37),
+
+ /* We turn aclk_dmac1 on for suspend; this will restore it */
+ RK3288_CLKGATE_CON(10),
};
static u32 rk3288_saved_cru_regs[ARRAY_SIZE(rk3288_saved_cru_reg_ids)];
@@ -848,6 +851,14 @@ static int rk3288_clk_suspend(void)
}
/*
+ * Going into deep sleep (specifically setting PMU_CLR_DMA in
+ * RK3288_PMU_PWRMODE_CON1) appears to fail unless
+ * "aclk_dmac1" is on.
+ */
+ writel_relaxed(1 << (12 + 16),
+ rk3288_cru_base + RK3288_CLKGATE_CON(10));
+
+ /*
* Switch PLLs other than DPLL (for SDRAM) to slow mode to
* avoid crashes on resume. The Mask ROM on the system will
* put APLL, CPLL, and GPLL into slow mode at resume time
diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index fbbcead93908..a4f9dcef9ce8 100644
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -638,8 +638,8 @@ static void _update_pll_mnp(struct tegra_clk_pll *pll,
pll_override_writel(val, params->pmc_divp_reg, pll);
val = pll_override_readl(params->pmc_divnm_reg, pll);
- val &= ~(divm_mask(pll) << div_nmp->override_divm_shift) |
- ~(divn_mask(pll) << div_nmp->override_divn_shift);
+ val &= ~((divm_mask(pll) << div_nmp->override_divm_shift) |
+ (divn_mask(pll) << div_nmp->override_divn_shift));
val |= (cfg->m << div_nmp->override_divm_shift) |
(cfg->n << div_nmp->override_divn_shift);
pll_override_writel(val, params->pmc_divnm_reg, pll);
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 085993cb2ccc..d2b94f0c29fc 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -632,7 +632,7 @@ static int sdma_load_script(struct sdma_engine *sdma, void *buf, int size,
spin_lock_irqsave(&sdma->channel_0_lock, flags);
bd0->mode.command = C0_SETPM;
- bd0->mode.status = BD_DONE | BD_INTR | BD_WRAP | BD_EXTD;
+ bd0->mode.status = BD_DONE | BD_WRAP | BD_EXTD;
bd0->mode.count = size / 2;
bd0->buffer_addr = buf_phys;
bd0->ext_buffer_addr = address;
@@ -909,7 +909,7 @@ static int sdma_load_context(struct sdma_channel *sdmac)
context->gReg[7] = sdmac->watermark_level;
bd0->mode.command = C0_SETDM;
- bd0->mode.status = BD_DONE | BD_INTR | BD_WRAP | BD_EXTD;
+ bd0->mode.status = BD_DONE | BD_WRAP | BD_EXTD;
bd0->mode.count = sizeof(*context) / 4;
bd0->buffer_addr = sdma->context_phys;
bd0->ext_buffer_addr = 2048 + (sizeof(*context) / 4) * channel;
diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c
index 979ea6ec7902..73d826375615 100644
--- a/drivers/hwtracing/coresight/coresight-etb10.c
+++ b/drivers/hwtracing/coresight/coresight-etb10.c
@@ -155,6 +155,10 @@ static int etb_enable(struct coresight_device *csdev, u32 mode)
if (val == CS_MODE_PERF)
return -EBUSY;
+ /* Don't let perf disturb sysFS sessions */
+ if (val == CS_MODE_SYSFS && mode == CS_MODE_PERF)
+ return -EBUSY;
+
/* Nothing to do, the tracer is already enabled. */
if (val == CS_MODE_SYSFS)
goto out;
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index d1340fb4e457..d046e51e7f9b 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -61,7 +61,8 @@ static void etm4_os_unlock(struct etmv4_drvdata *drvdata)
static bool etm4_arch_supported(u8 arch)
{
- switch (arch) {
+ /* Mask out the minor version number */
+ switch (arch & 0xf0) {
case ETM_ARCH_V4:
break;
default:
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index 25ea43de4cea..94a3ecdf085b 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -606,7 +606,7 @@ static void trim_pfn_device(struct nd_pfn *nd_pfn, u32 *start_pad, u32 *end_trun
if (region_intersects(start, size, IORESOURCE_SYSTEM_RAM,
IORES_DESC_NONE) == REGION_MIXED
|| !IS_ALIGNED(end, nd_pfn->align)
- || nd_region_conflict(nd_region, start, size + adjust))
+ || nd_region_conflict(nd_region, start, size))
*end_trunc = end - phys_pmem_align_down(nd_pfn, end);
}
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index dc03bf7275a2..057da55ce9e4 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2410,6 +2410,7 @@ int nvme_init_identify(struct nvme_ctrl *ctrl)
ctrl->oacs = le16_to_cpu(id->oacs);
ctrl->oncs = le16_to_cpup(&id->oncs);
+ ctrl->mtfa = le16_to_cpu(id->mtfa);
ctrl->oaes = le32_to_cpu(id->oaes);
atomic_set(&ctrl->abort_limit, id->acl + 1);
ctrl->vwc = id->vwc;
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 1ef08e8f9f13..495999d2d73c 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -364,7 +364,7 @@ qla2x00_sysfs_write_optrom_ctl(struct file *filp, struct kobject *kobj,
}
ha->optrom_region_start = start;
- ha->optrom_region_size = start + size;
+ ha->optrom_region_size = size;
ha->optrom_state = QLA_SREADING;
ha->optrom_buffer = vmalloc(ha->optrom_region_size);
@@ -437,7 +437,7 @@ qla2x00_sysfs_write_optrom_ctl(struct file *filp, struct kobject *kobj,
}
ha->optrom_region_start = start;
- ha->optrom_region_size = start + size;
+ ha->optrom_region_size = size;
ha->optrom_state = QLA_SWRITING;
ha->optrom_buffer = vmalloc(ha->optrom_region_size);
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 44997d74e5a4..176b29dd416f 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -409,6 +409,8 @@ static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
cmd->se_cmd.transport_state,
cmd->se_cmd.t_state,
cmd->se_cmd.se_cmd_flags);
+ transport_generic_request_failure(&cmd->se_cmd,
+ TCM_CHECK_CONDITION_ABORT_CMD);
return 0;
}
cmd->trc_flags |= TRC_XFR_RDY;
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index 1bb9986f865e..33f249af0063 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -992,6 +992,8 @@ int comedi_dio_insn_config(struct comedi_device *dev,
unsigned int mask);
unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
unsigned int *data);
+unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
+ struct comedi_cmd *cmd);
unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s);
unsigned int comedi_nscans_left(struct comedi_subdevice *s,
unsigned int nscans);
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index 1736248bc5b8..8ca5493c66fe 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -390,11 +390,13 @@ unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
EXPORT_SYMBOL_GPL(comedi_dio_update_state);
/**
- * comedi_bytes_per_scan() - Get length of asynchronous command "scan" in bytes
+ * comedi_bytes_per_scan_cmd() - Get length of asynchronous command "scan" in
+ * bytes
* @s: COMEDI subdevice.
+ * @cmd: COMEDI command.
*
* Determines the overall scan length according to the subdevice type and the
- * number of channels in the scan.
+ * number of channels in the scan for the specified command.
*
* For digital input, output or input/output subdevices, samples for
* multiple channels are assumed to be packed into one or more unsigned
@@ -404,9 +406,9 @@ EXPORT_SYMBOL_GPL(comedi_dio_update_state);
*
* Returns the overall scan length in bytes.
*/
-unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s)
+unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
+ struct comedi_cmd *cmd)
{
- struct comedi_cmd *cmd = &s->async->cmd;
unsigned int num_samples;
unsigned int bits_per_sample;
@@ -423,6 +425,29 @@ unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s)
}
return comedi_samples_to_bytes(s, num_samples);
}
+EXPORT_SYMBOL_GPL(comedi_bytes_per_scan_cmd);
+
+/**
+ * comedi_bytes_per_scan() - Get length of asynchronous command "scan" in bytes
+ * @s: COMEDI subdevice.
+ *
+ * Determines the overall scan length according to the subdevice type and the
+ * number of channels in the scan for the current command.
+ *
+ * For digital input, output or input/output subdevices, samples for
+ * multiple channels are assumed to be packed into one or more unsigned
+ * short or unsigned int values according to the subdevice's %SDF_LSAMPL
+ * flag. For other types of subdevice, samples are assumed to occupy a
+ * whole unsigned short or unsigned int according to the %SDF_LSAMPL flag.
+ *
+ * Returns the overall scan length in bytes.
+ */
+unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s)
+{
+ struct comedi_cmd *cmd = &s->async->cmd;
+
+ return comedi_bytes_per_scan_cmd(s, cmd);
+}
EXPORT_SYMBOL_GPL(comedi_bytes_per_scan);
static unsigned int __comedi_nscans_left(struct comedi_subdevice *s,
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index f8377c244f44..85b5a3ca6e89 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -3522,6 +3522,7 @@ static int ni_cdio_check_chanlist(struct comedi_device *dev,
static int ni_cdio_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s, struct comedi_cmd *cmd)
{
+ unsigned int bytes_per_scan;
int err = 0;
int tmp;
@@ -3551,9 +3552,12 @@ static int ni_cdio_cmdtest(struct comedi_device *dev,
err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
cmd->chanlist_len);
- err |= comedi_check_trigger_arg_max(&cmd->stop_arg,
- s->async->prealloc_bufsz /
- comedi_bytes_per_scan(s));
+ bytes_per_scan = comedi_bytes_per_scan_cmd(s, cmd);
+ if (bytes_per_scan) {
+ err |= comedi_check_trigger_arg_max(&cmd->stop_arg,
+ s->async->prealloc_bufsz /
+ bytes_per_scan);
+ }
if (err)
return 3;
diff --git a/include/linux/siphash.h b/include/linux/siphash.h
index fa7a6b9cedbf..bf21591a9e5e 100644
--- a/include/linux/siphash.h
+++ b/include/linux/siphash.h
@@ -21,6 +21,11 @@ typedef struct {
u64 key[2];
} siphash_key_t;
+static inline bool siphash_key_is_zero(const siphash_key_t *key)
+{
+ return !(key->key[0] | key->key[1]);
+}
+
u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key);
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key);
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 9aa2b8d38a8f..d36a283d31f2 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -155,6 +155,8 @@ struct net {
} ip6addrlbl_table;
struct uevent_sock *uevent_sock; /* uevent socket */
int sysctl_tcp_min_snd_mss;
+ u32 hash_mix;
+ siphash_key_t ip_id_key;
#endif
};
diff --git a/include/net/netns/hash.h b/include/net/netns/hash.h
index 69a6715d9f3f..a347b2f9e748 100644
--- a/include/net/netns/hash.h
+++ b/include/net/netns/hash.h
@@ -1,21 +1,10 @@
#ifndef __NET_NS_HASH_H__
#define __NET_NS_HASH_H__
-#include <asm/cache.h>
-
-struct net;
+#include <net/net_namespace.h>
static inline u32 net_hash_mix(const struct net *net)
{
-#ifdef CONFIG_NET_NS
- /*
- * shift this right to eliminate bits, that are
- * always zeroed
- */
-
- return (u32)(((unsigned long)net) >> L1_CACHE_SHIFT);
-#else
- return 0;
-#endif
+ return net->hash_mix;
}
#endif
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index cd686c4fb32d..c7d6e2d788fd 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -8,6 +8,7 @@
#include <linux/uidgid.h>
#include <net/inet_frag.h>
#include <linux/rcupdate.h>
+#include <linux/siphash.h>
struct tcpm_hash_bucket;
struct ctl_table_header;
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index e98f92f54688..5a2aae6bb176 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -33,7 +33,6 @@
#include <linux/list.h>
#include <linux/hash.h>
#include <linux/rcupdate.h>
-#include <linux/memory.h>
#include <trace/events/sched.h>
@@ -2630,12 +2629,10 @@ static void ftrace_run_update_code(int command)
{
int ret;
- mutex_lock(&text_mutex);
-
ret = ftrace_arch_code_modify_prepare();
FTRACE_WARN_ON(ret);
if (ret)
- goto out_unlock;
+ return;
/*
* By default we use stop_machine() to modify the code.
@@ -2647,9 +2644,6 @@ static void ftrace_run_update_code(int command)
ret = ftrace_arch_code_modify_post_process();
FTRACE_WARN_ON(ret);
-
-out_unlock:
- mutex_unlock(&text_mutex);
}
static void ftrace_run_modify_code(struct ftrace_ops *ops, int command,
@@ -5415,7 +5409,6 @@ void ftrace_module_enable(struct module *mod)
struct ftrace_page *pg;
mutex_lock(&ftrace_lock);
- mutex_lock(&text_mutex);
if (ftrace_disabled)
goto out_unlock;
@@ -5476,7 +5469,6 @@ void ftrace_module_enable(struct module *mod)
ftrace_arch_code_modify_post_process();
out_unlock:
- mutex_unlock(&text_mutex);
mutex_unlock(&ftrace_lock);
}
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index eeef671c9944..072902d00b4a 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6191,11 +6191,13 @@ tracing_snapshot_write(struct file *filp, const char __user *ubuf, size_t cnt,
break;
}
#endif
- if (!tr->allocated_snapshot) {
+ if (tr->allocated_snapshot)
+ ret = resize_buffer_duplicate_size(&tr->max_buffer,
+ &tr->trace_buffer, iter->cpu_file);
+ else
ret = tracing_alloc_snapshot_instance(tr);
- if (ret < 0)
- break;
- }
+ if (ret < 0)
+ break;
local_irq_disable();
/* Now, we're going to swap */
if (iter->cpu_file == RING_BUFFER_ALL_CPUS)
diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index 08b64bc4d2ba..bbf1e096e5eb 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -338,7 +338,7 @@ void sbitmap_queue_resize(struct sbitmap_queue *sbq, unsigned int depth)
* Pairs with the memory barrier in sbq_wake_up() to ensure that
* the batch size is updated before the wait counts.
*/
- smp_mb__before_atomic();
+ smp_mb();
for (i = 0; i < SBQ_WAIT_QUEUES; i++)
atomic_set(&sbq->ws[i].wait_cnt, 1);
}
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index f8d47030b74b..4ab81fc0603f 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -285,6 +285,7 @@ static __net_init int setup_net(struct net *net, struct user_namespace *user_ns)
atomic_set(&net->count, 1);
atomic_set(&net->passive, 1);
+ get_random_bytes(&net->hash_mix, sizeof(u32));
net->dev_base_seq = 1;
net->user_ns = user_ns;
idr_init(&net->netns_ids);
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 61d94e5a1231..4540b73f2189 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -513,15 +513,16 @@ EXPORT_SYMBOL(ip_idents_reserve);
void __ip_select_ident(struct net *net, struct iphdr *iph, int segs)
{
- static u32 ip_idents_hashrnd __read_mostly;
u32 hash, id;
- net_get_random_once(&ip_idents_hashrnd, sizeof(ip_idents_hashrnd));
+ /* Note the following code is not safe, but this is okay. */
+ if (unlikely(siphash_key_is_zero(&net->ip_id_key)))
+ get_random_bytes(&net->ip_id_key, sizeof(net->ip_id_key));
- hash = jhash_3words((__force u32)iph->daddr,
+ hash = siphash_3u32((__force u32)iph->daddr,
(__force u32)iph->saddr,
- iph->protocol ^ net_hash_mix(net),
- ip_idents_hashrnd);
+ iph->protocol,
+ &net->ip_id_key);
id = ip_idents_reserve(hash, segs);
iph->id = htons(id);
}
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index ab6a597099ad..3436b32a9bfa 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1273,7 +1273,7 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len,
if (nsize < 0)
nsize = 0;
- if (unlikely((sk->sk_wmem_queued >> 1) > sk->sk_sndbuf))
+ if (unlikely((sk->sk_wmem_queued >> 1) > sk->sk_sndbuf + 0x20000))
return -ENOMEM;
if (skb_unclone(skb, gfp))
diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
index 4fe7c90962dd..7f191a24f363 100644
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c
@@ -10,15 +10,24 @@
#include <net/secure_seq.h>
#include <linux/netfilter.h>
-static u32 __ipv6_select_ident(struct net *net, u32 hashrnd,
+static u32 __ipv6_select_ident(struct net *net,
const struct in6_addr *dst,
const struct in6_addr *src)
{
+ const struct {
+ struct in6_addr dst;
+ struct in6_addr src;
+ } __aligned(SIPHASH_ALIGNMENT) combined = {
+ .dst = *dst,
+ .src = *src,
+ };
u32 hash, id;
- hash = __ipv6_addr_jhash(dst, hashrnd);
- hash = __ipv6_addr_jhash(src, hash);
- hash ^= net_hash_mix(net);
+ /* Note the following code is not safe, but this is okay. */
+ if (unlikely(siphash_key_is_zero(&net->ip_id_key)))
+ get_random_bytes(&net->ip_id_key, sizeof(net->ip_id_key));
+
+ hash = siphash(&combined, sizeof(combined), &net->ip_id_key);
/* Treat id of 0 as unset and if we get 0 back from ip_idents_reserve,
* set the hight order instead thus minimizing possible future
@@ -41,7 +50,6 @@ static u32 __ipv6_select_ident(struct net *net, u32 hashrnd,
*/
__be32 ipv6_proxy_select_ident(struct net *net, struct sk_buff *skb)
{
- static u32 ip6_proxy_idents_hashrnd __read_mostly;
struct in6_addr buf[2];
struct in6_addr *addrs;
u32 id;
@@ -53,11 +61,7 @@ __be32 ipv6_proxy_select_ident(struct net *net, struct sk_buff *skb)
if (!addrs)
return 0;
- net_get_random_once(&ip6_proxy_idents_hashrnd,
- sizeof(ip6_proxy_idents_hashrnd));
-
- id = __ipv6_select_ident(net, ip6_proxy_idents_hashrnd,
- &addrs[1], &addrs[0]);
+ id = __ipv6_select_ident(net, &addrs[1], &addrs[0]);
return htonl(id);
}
EXPORT_SYMBOL_GPL(ipv6_proxy_select_ident);
@@ -66,12 +70,9 @@ __be32 ipv6_select_ident(struct net *net,
const struct in6_addr *daddr,
const struct in6_addr *saddr)
{
- static u32 ip6_idents_hashrnd __read_mostly;
u32 id;
- net_get_random_once(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd));
-
- id = __ipv6_select_ident(net, ip6_idents_hashrnd, daddr, saddr);
+ id = __ipv6_select_ident(net, daddr, saddr);
return htonl(id);
}
EXPORT_SYMBOL(ipv6_select_ident);
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index 4c041a44dac8..8981fc9d92bd 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -259,7 +259,7 @@ static bool unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name)
char *tag = NULL;
size_t size = unpack_u16_chunk(e, &tag);
/* if a name is specified it must match. otherwise skip tag */
- if (name && (!size || strcmp(name, tag)))
+ if (name && (!size || tag[size-1] != '\0' || strcmp(name, tag)))
goto fail;
} else if (name) {
/* if a name is specified and there is no name tag fail */