GitHub-Mirror/build
2
0
Fork 0
mirror of https://github.com/Fishwaldo/build.git synced 2025-07-23 05:18:55 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Udoo NEXT upstream patches

Browse source
This commit is contained in:
Igor Pecovnik 2017-05-01 21:54:11 +02:00
parent 1b9ea51d47
commit dfc49ad387
6 changed files with 7278 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1175
patch/kernel/udoo-next/03-patch-4.4.59-60.patch Normal file
View file

File diff suppressed because it is too large Load diff

1527
patch/kernel/udoo-next/03-patch-4.4.60-61.patch Normal file
View file

File diff suppressed because it is too large Load diff

839
patch/kernel/udoo-next/03-patch-4.4.61-62.patch Normal file
View file

@ -0,0 +1,839 @@
diff --git a/Makefile b/Makefile
index ef5045b8201d..0309acc34472 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 4
-SUBLEVEL = 61
+SUBLEVEL = 62
EXTRAVERSION =
NAME = Blurry Fish Butt
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 75bfca69e418..d5cfa937d622 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -9,6 +9,7 @@ config MIPS
select HAVE_CONTEXT_TRACKING
select HAVE_GENERIC_DMA_COHERENT
select HAVE_IDE
+ select HAVE_IRQ_EXIT_ON_IRQ_STACK
select HAVE_OPROFILE
select HAVE_PERF_EVENTS
select PERF_USE_VMALLOC
diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index 15e0fecbc300..ebb9efb02502 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -17,6 +17,18 @@
#include <irq.h>
+#define IRQ_STACK_SIZE THREAD_SIZE
+
+extern void *irq_stack[NR_CPUS];
+
+static inline bool on_irq_stack(int cpu, unsigned long sp)
+{
+ unsigned long low = (unsigned long)irq_stack[cpu];
+ unsigned long high = low + IRQ_STACK_SIZE;
+
+ return (low <= sp && sp <= high);
+}
+
#ifdef CONFIG_I8259
static inline int irq_canonicalize(int irq)
{
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index a71da576883c..5347f130f536 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -216,12 +216,19 @@
LONG_S $25, PT_R25(sp)
LONG_S $28, PT_R28(sp)
LONG_S $31, PT_R31(sp)
+
+ /* Set thread_info if we're coming from user mode */
+ mfc0 k0, CP0_STATUS
+ sll k0, 3 /* extract cu0 bit */
+ bltz k0, 9f
+
ori $28, sp, _THREAD_MASK
xori $28, _THREAD_MASK
#ifdef CONFIG_CPU_CAVIUM_OCTEON
.set mips64
pref 0, 0($28) /* Prefetch the current pointer */
#endif
+9:
.set pop
.endm
diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index 154e2039ea5e..ec053ce7bb38 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -101,6 +101,7 @@ void output_thread_info_defines(void)
OFFSET(TI_REGS, thread_info, regs);
DEFINE(_THREAD_SIZE, THREAD_SIZE);
DEFINE(_THREAD_MASK, THREAD_MASK);
+ DEFINE(_IRQ_STACK_SIZE, IRQ_STACK_SIZE);
BLANK();
}
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index baa7b6fc0a60..619e30e2c4f0 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -188,9 +188,44 @@ NESTED(handle_int, PT_SIZE, sp)
LONG_L s0, TI_REGS($28)
LONG_S sp, TI_REGS($28)
- PTR_LA ra, ret_from_irq
- PTR_LA v0, plat_irq_dispatch
- jr v0
+
+ /*
+ * SAVE_ALL ensures we are using a valid kernel stack for the thread.
+ * Check if we are already using the IRQ stack.
+ */
+ move s1, sp # Preserve the sp
+
+ /* Get IRQ stack for this CPU */
+ ASM_CPUID_MFC0 k0, ASM_SMP_CPUID_REG
+#if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32)
+ lui k1, %hi(irq_stack)
+#else
+ lui k1, %highest(irq_stack)
+ daddiu k1, %higher(irq_stack)
+ dsll k1, 16
+ daddiu k1, %hi(irq_stack)
+ dsll k1, 16
+#endif
+ LONG_SRL k0, SMP_CPUID_PTRSHIFT
+ LONG_ADDU k1, k0
+ LONG_L t0, %lo(irq_stack)(k1)
+
+ # Check if already on IRQ stack
+ PTR_LI t1, ~(_THREAD_SIZE-1)
+ and t1, t1, sp
+ beq t0, t1, 2f
+
+ /* Switch to IRQ stack */
+ li t1, _IRQ_STACK_SIZE
+ PTR_ADD sp, t0, t1
+
+2:
+ jal plat_irq_dispatch
+
+ /* Restore sp */
+ move sp, s1
+
+ j ret_from_irq
#ifdef CONFIG_CPU_MICROMIPS
nop
#endif
@@ -263,8 +298,44 @@ NESTED(except_vec_vi_handler, 0, sp)
LONG_L s0, TI_REGS($28)
LONG_S sp, TI_REGS($28)
- PTR_LA ra, ret_from_irq
- jr v0
+
+ /*
+ * SAVE_ALL ensures we are using a valid kernel stack for the thread.
+ * Check if we are already using the IRQ stack.
+ */
+ move s1, sp # Preserve the sp
+
+ /* Get IRQ stack for this CPU */
+ ASM_CPUID_MFC0 k0, ASM_SMP_CPUID_REG
+#if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32)
+ lui k1, %hi(irq_stack)
+#else
+ lui k1, %highest(irq_stack)
+ daddiu k1, %higher(irq_stack)
+ dsll k1, 16
+ daddiu k1, %hi(irq_stack)
+ dsll k1, 16
+#endif
+ LONG_SRL k0, SMP_CPUID_PTRSHIFT
+ LONG_ADDU k1, k0
+ LONG_L t0, %lo(irq_stack)(k1)
+
+ # Check if already on IRQ stack
+ PTR_LI t1, ~(_THREAD_SIZE-1)
+ and t1, t1, sp
+ beq t0, t1, 2f
+
+ /* Switch to IRQ stack */
+ li t1, _IRQ_STACK_SIZE
+ PTR_ADD sp, t0, t1
+
+2:
+ jalr v0
+
+ /* Restore sp */
+ move sp, s1
+
+ j ret_from_irq
END(except_vec_vi_handler)
/*
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 8eb5af805964..dc1180a8bfa1 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -25,6 +25,8 @@
#include <linux/atomic.h>
#include <asm/uaccess.h>
+void *irq_stack[NR_CPUS];
+
/*
* 'what should we do if we get a hw irq event on an illegal vector'.
* each architecture has to answer this themselves.
@@ -55,6 +57,15 @@ void __init init_IRQ(void)
irq_set_noprobe(i);
arch_init_irq();
+
+ for_each_possible_cpu(i) {
+ int irq_pages = IRQ_STACK_SIZE / PAGE_SIZE;
+ void *s = (void *)__get_free_pages(GFP_KERNEL, irq_pages);
+
+ irq_stack[i] = s;
+ pr_debug("CPU%d IRQ stack at 0x%p - 0x%p\n", i,
+ irq_stack[i], irq_stack[i] + IRQ_STACK_SIZE);
+ }
}
#ifdef CONFIG_DEBUG_STACKOVERFLOW
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index fc537d1b649d..8c26ecac930d 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -32,6 +32,7 @@
#include <asm/cpu.h>
#include <asm/dsp.h>
#include <asm/fpu.h>
+#include <asm/irq.h>
#include <asm/msa.h>
#include <asm/pgtable.h>
#include <asm/mipsregs.h>
@@ -552,7 +553,19 @@ EXPORT_SYMBOL(unwind_stack_by_address);
unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
unsigned long pc, unsigned long *ra)
{
- unsigned long stack_page = (unsigned long)task_stack_page(task);
+ unsigned long stack_page = 0;
+ int cpu;
+
+ for_each_possible_cpu(cpu) {
+ if (on_irq_stack(cpu, *sp)) {
+ stack_page = (unsigned long)irq_stack[cpu];
+ break;
+ }
+ }
+
+ if (!stack_page)
+ stack_page = (unsigned long)task_stack_page(task);
+
return unwind_stack_by_address(stack_page, sp, pc, ra);
}
#endif
diff --git a/block/blk-mq.c b/block/blk-mq.c
index d8d63c38bf29..0d1af3e44efb 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1470,7 +1470,7 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
INIT_LIST_HEAD(&tags->page_list);
tags->rqs = kzalloc_node(set->queue_depth * sizeof(struct request *),
- GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY,
+ GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
set->numa_node);
if (!tags->rqs) {
blk_mq_free_tags(tags);
@@ -1496,7 +1496,7 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
do {
page = alloc_pages_node(set->numa_node,
- GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY | __GFP_ZERO,
+ GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY | __GFP_ZERO,
this_order);
if (page)
break;
@@ -1517,7 +1517,7 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
* Allow kmemleak to scan these pages as they contain pointers
* to additional allocations like via ops->init_request().
*/
- kmemleak_alloc(p, order_to_size(this_order), 1, GFP_KERNEL);
+ kmemleak_alloc(p, order_to_size(this_order), 1, GFP_NOIO);
entries_per_page = order_to_size(this_order) / rq_size;
to_do = min(entries_per_page, set->queue_depth - i);
left -= to_do * rq_size;
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 69d4a1326fee..53e61459c69f 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -278,7 +278,8 @@ static int deinstantiate_rng(struct device *ctrldev, int state_handle_mask)
/* Try to run it through DECO0 */
ret = run_descriptor_deco0(ctrldev, desc, &status);
- if (ret || status) {
+ if (ret ||
+ (status && status != JRSTA_SSRC_JUMP_HALT_CC)) {
dev_err(ctrldev,
"Failed to deinstantiate RNG4 SH%d\n",
sh_idx);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index fb9f647bb5cd..5044f2257e89 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1159,7 +1159,7 @@ struct intel_gen6_power_mgmt {
struct intel_rps_client semaphores, mmioflips;
/* manual wa residency calculations */
- struct intel_rps_ei up_ei, down_ei;
+ struct intel_rps_ei ei;
/*
* Protects RPS/RC6 register access and PCU communication.
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 0f42a2782afc..b7b0a38acd67 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -994,68 +994,51 @@ static void vlv_c0_read(struct drm_i915_private *dev_priv,
ei->media_c0 = I915_READ(VLV_MEDIA_C0_COUNT);
}
-static bool vlv_c0_above(struct drm_i915_private *dev_priv,
- const struct intel_rps_ei *old,
- const struct intel_rps_ei *now,
- int threshold)
-{
- u64 time, c0;
- unsigned int mul = 100;
-
- if (old->cz_clock == 0)
- return false;
-
- if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH)
- mul <<= 8;
-
- time = now->cz_clock - old->cz_clock;
- time *= threshold * dev_priv->czclk_freq;
-
- /* Workload can be split between render + media, e.g. SwapBuffers
- * being blitted in X after being rendered in mesa. To account for
- * this we need to combine both engines into our activity counter.
- */
- c0 = now->render_c0 - old->render_c0;
- c0 += now->media_c0 - old->media_c0;
- c0 *= mul * VLV_CZ_CLOCK_TO_MILLI_SEC;
-
- return c0 >= time;
-}
-
void gen6_rps_reset_ei(struct drm_i915_private *dev_priv)
{
- vlv_c0_read(dev_priv, &dev_priv->rps.down_ei);
- dev_priv->rps.up_ei = dev_priv->rps.down_ei;
+ memset(&dev_priv->rps.ei, 0, sizeof(dev_priv->rps.ei));
}
static u32 vlv_wa_c0_ei(struct drm_i915_private *dev_priv, u32 pm_iir)
{
+ const struct intel_rps_ei *prev = &dev_priv->rps.ei;
struct intel_rps_ei now;
u32 events = 0;
- if ((pm_iir & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED)) == 0)
+ if ((pm_iir & GEN6_PM_RP_UP_EI_EXPIRED) == 0)
return 0;
vlv_c0_read(dev_priv, &now);
if (now.cz_clock == 0)
return 0;
- if (pm_iir & GEN6_PM_RP_DOWN_EI_EXPIRED) {
- if (!vlv_c0_above(dev_priv,
- &dev_priv->rps.down_ei, &now,
- dev_priv->rps.down_threshold))
- events |= GEN6_PM_RP_DOWN_THRESHOLD;
- dev_priv->rps.down_ei = now;
- }
+ if (prev->cz_clock) {
+ u64 time, c0;
+ unsigned int mul;
- if (pm_iir & GEN6_PM_RP_UP_EI_EXPIRED) {
- if (vlv_c0_above(dev_priv,
- &dev_priv->rps.up_ei, &now,
- dev_priv->rps.up_threshold))
- events |= GEN6_PM_RP_UP_THRESHOLD;
- dev_priv->rps.up_ei = now;
+ mul = VLV_CZ_CLOCK_TO_MILLI_SEC * 100; /* scale to threshold% */
+ if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH)
+ mul <<= 8;
+
+ time = now.cz_clock - prev->cz_clock;
+ time *= dev_priv->czclk_freq;
+
+ /* Workload can be split between render + media,
+ * e.g. SwapBuffers being blitted in X after being rendered in
+ * mesa. To account for this we need to combine both engines
+ * into our activity counter.
+ */
+ c0 = now.render_c0 - prev->render_c0;
+ c0 += now.media_c0 - prev->media_c0;
+ c0 *= mul;
+
+ if (c0 > time * dev_priv->rps.up_threshold)
+ events = GEN6_PM_RP_UP_THRESHOLD;
+ else if (c0 < time * dev_priv->rps.down_threshold)
+ events = GEN6_PM_RP_DOWN_THRESHOLD;
}
+ dev_priv->rps.ei = now;
return events;
}
@@ -4390,7 +4373,7 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
/* Let's track the enabled rps events */
if (IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
/* WaGsvRC0ResidencyMethod:vlv */
- dev_priv->pm_rps_events = GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED;
+ dev_priv->pm_rps_events = GEN6_PM_RP_UP_EI_EXPIRED;
else
dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index e7c18519274a..fd4690ed93c0 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4376,6 +4376,12 @@ static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val)
break;
}
+ /* When byt can survive without system hang with dynamic
+ * sw freq adjustments, this restriction can be lifted.
+ */
+ if (IS_VALLEYVIEW(dev_priv))
+ goto skip_hw_write;
+
I915_WRITE(GEN6_RP_UP_EI,
GT_INTERVAL_FROM_US(dev_priv, ei_up));
I915_WRITE(GEN6_RP_UP_THRESHOLD,
@@ -4394,6 +4400,7 @@ static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val)
GEN6_RP_UP_BUSY_AVG |
GEN6_RP_DOWN_IDLE_AVG);
+skip_hw_write:
dev_priv->rps.power = new_power;
dev_priv->rps.up_threshold = threshold_up;
dev_priv->rps.down_threshold = threshold_down;
@@ -4404,8 +4411,9 @@ static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val)
{
u32 mask = 0;
+ /* We use UP_EI_EXPIRED interupts for both up/down in manual mode */
if (val > dev_priv->rps.min_freq_softlimit)
- mask |= GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT;
+ mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT;
if (val < dev_priv->rps.max_freq_softlimit)
mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD;
@@ -4509,7 +4517,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv)
{
mutex_lock(&dev_priv->rps.hw_lock);
if (dev_priv->rps.enabled) {
- if (dev_priv->pm_rps_events & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED))
+ if (dev_priv->pm_rps_events & GEN6_PM_RP_UP_EI_EXPIRED)
gen6_rps_reset_ei(dev_priv);
I915_WRITE(GEN6_PMINTRMSK,
gen6_rps_pm_mask(dev_priv, dev_priv->rps.cur_freq));
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
index c0720c1ee4c9..5abab8800891 100644
--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -225,12 +225,10 @@ static int bcm47xxpart_parse(struct mtd_info *master,
last_trx_part = curr_part - 1;
- /*
- * We have whole TRX scanned, skip to the next part. Use
- * roundown (not roundup), as the loop will increase
- * offset in next step.
- */
- offset = rounddown(offset + trx->length, blocksize);
+ /* Jump to the end of TRX */
+ offset = roundup(offset + trx->length, blocksize);
+ /* Next loop iteration will increase the offset */
+ offset -= blocksize;
continue;
}
diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 7af870a3c549..855c43d8f7e0 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -58,7 +58,7 @@ static struct kobj_type ktype_veth_pool;
static const char ibmveth_driver_name[] = "ibmveth";
static const char ibmveth_driver_string[] = "IBM Power Virtual Ethernet Driver";
-#define ibmveth_driver_version "1.05"
+#define ibmveth_driver_version "1.06"
MODULE_AUTHOR("Santiago Leon <santil@linux.vnet.ibm.com>");
MODULE_DESCRIPTION("IBM Power Virtual Ethernet Driver");
@@ -137,6 +137,11 @@ static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter)
return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK;
}
+static inline int ibmveth_rxq_large_packet(struct ibmveth_adapter *adapter)
+{
+ return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_LRG_PKT;
+}
+
static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter)
{
return be32_to_cpu(adapter->rx_queue.queue_addr[adapter->rx_queue.index].length);
@@ -1172,6 +1177,45 @@ map_failed:
goto retry_bounce;
}
+static void ibmveth_rx_mss_helper(struct sk_buff *skb, u16 mss, int lrg_pkt)
+{
+ int offset = 0;
+
+ /* only TCP packets will be aggregated */
+ if (skb->protocol == htons(ETH_P_IP)) {
+ struct iphdr *iph = (struct iphdr *)skb->data;
+
+ if (iph->protocol == IPPROTO_TCP) {
+ offset = iph->ihl * 4;
+ skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
+ } else {
+ return;
+ }
+ } else if (skb->protocol == htons(ETH_P_IPV6)) {
+ struct ipv6hdr *iph6 = (struct ipv6hdr *)skb->data;
+
+ if (iph6->nexthdr == IPPROTO_TCP) {
+ offset = sizeof(struct ipv6hdr);
+ skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
+ } else {
+ return;
+ }
+ } else {
+ return;
+ }
+ /* if mss is not set through Large Packet bit/mss in rx buffer,
+ * expect that the mss will be written to the tcp header checksum.
+ */
+ if (lrg_pkt) {
+ skb_shinfo(skb)->gso_size = mss;
+ } else if (offset) {
+ struct tcphdr *tcph = (struct tcphdr *)(skb->data + offset);
+
+ skb_shinfo(skb)->gso_size = ntohs(tcph->check);
+ tcph->check = 0;
+ }
+}
+
static int ibmveth_poll(struct napi_struct *napi, int budget)
{
struct ibmveth_adapter *adapter =
@@ -1180,6 +1224,7 @@ static int ibmveth_poll(struct napi_struct *napi, int budget)
int frames_processed = 0;
unsigned long lpar_rc;
struct iphdr *iph;
+ u16 mss = 0;
restart_poll:
while (frames_processed < budget) {
@@ -1197,9 +1242,21 @@ restart_poll:
int length = ibmveth_rxq_frame_length(adapter);
int offset = ibmveth_rxq_frame_offset(adapter);
int csum_good = ibmveth_rxq_csum_good(adapter);
+ int lrg_pkt = ibmveth_rxq_large_packet(adapter);
skb = ibmveth_rxq_get_buffer(adapter);
+ /* if the large packet bit is set in the rx queue
+ * descriptor, the mss will be written by PHYP eight
+ * bytes from the start of the rx buffer, which is
+ * skb->data at this stage
+ */
+ if (lrg_pkt) {
+ __be64 *rxmss = (__be64 *)(skb->data + 8);
+
+ mss = (u16)be64_to_cpu(*rxmss);
+ }
+
new_skb = NULL;
if (length < rx_copybreak)
new_skb = netdev_alloc_skb(netdev, length);
@@ -1233,11 +1290,15 @@ restart_poll:
if (iph->check == 0xffff) {
iph->check = 0;
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
- adapter->rx_large_packets++;
}
}
}
+ if (length > netdev->mtu + ETH_HLEN) {
+ ibmveth_rx_mss_helper(skb, mss, lrg_pkt);
+ adapter->rx_large_packets++;
+ }
+
napi_gro_receive(napi, skb); /* send it up */
netdev->stats.rx_packets++;
diff --git a/drivers/net/ethernet/ibm/ibmveth.h b/drivers/net/ethernet/ibm/ibmveth.h
index 4eade67fe30c..7acda04d034e 100644
--- a/drivers/net/ethernet/ibm/ibmveth.h
+++ b/drivers/net/ethernet/ibm/ibmveth.h
@@ -209,6 +209,7 @@ struct ibmveth_rx_q_entry {
#define IBMVETH_RXQ_TOGGLE 0x80000000
#define IBMVETH_RXQ_TOGGLE_SHIFT 31
#define IBMVETH_RXQ_VALID 0x40000000
+#define IBMVETH_RXQ_LRG_PKT 0x04000000
#define IBMVETH_RXQ_NO_CSUM 0x02000000
#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
diff --git a/drivers/net/ethernet/mellanox/mlx4/cq.c b/drivers/net/ethernet/mellanox/mlx4/cq.c
index 3348e646db70..6eba58044456 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cq.c
@@ -101,13 +101,19 @@ void mlx4_cq_completion(struct mlx4_dev *dev, u32 cqn)
{
struct mlx4_cq *cq;
+ rcu_read_lock();
cq = radix_tree_lookup(&mlx4_priv(dev)->cq_table.tree,
cqn & (dev->caps.num_cqs - 1));
+ rcu_read_unlock();
+
if (!cq) {
mlx4_dbg(dev, "Completion event for bogus CQ %08x\n", cqn);
return;
}
+ /* Acessing the CQ outside of rcu_read_lock is safe, because
+ * the CQ is freed only after interrupt handling is completed.
+ */
++cq->arm_sn;
cq->comp(cq);
@@ -118,23 +124,19 @@ void mlx4_cq_event(struct mlx4_dev *dev, u32 cqn, int event_type)
struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table;
struct mlx4_cq *cq;
- spin_lock(&cq_table->lock);
-
+ rcu_read_lock();
cq = radix_tree_lookup(&cq_table->tree, cqn & (dev->caps.num_cqs - 1));
- if (cq)
- atomic_inc(&cq->refcount);
-
- spin_unlock(&cq_table->lock);
+ rcu_read_unlock();
if (!cq) {
- mlx4_warn(dev, "Async event for bogus CQ %08x\n", cqn);
+ mlx4_dbg(dev, "Async event for bogus CQ %08x\n", cqn);
return;
}
+ /* Acessing the CQ outside of rcu_read_lock is safe, because
+ * the CQ is freed only after interrupt handling is completed.
+ */
cq->event(cq, event_type);
-
- if (atomic_dec_and_test(&cq->refcount))
- complete(&cq->free);
}
static int mlx4_SW2HW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
@@ -301,9 +303,9 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent,
if (err)
return err;
- spin_lock_irq(&cq_table->lock);
+ spin_lock(&cq_table->lock);
err = radix_tree_insert(&cq_table->tree, cq->cqn, cq);
- spin_unlock_irq(&cq_table->lock);
+ spin_unlock(&cq_table->lock);
if (err)
goto err_icm;
@@ -347,9 +349,9 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent,
return 0;
err_radix:
- spin_lock_irq(&cq_table->lock);
+ spin_lock(&cq_table->lock);
radix_tree_delete(&cq_table->tree, cq->cqn);
- spin_unlock_irq(&cq_table->lock);
+ spin_unlock(&cq_table->lock);
err_icm:
mlx4_cq_free_icm(dev, cq->cqn);
@@ -368,15 +370,15 @@ void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq)
if (err)
mlx4_warn(dev, "HW2SW_CQ failed (%d) for CQN %06x\n", err, cq->cqn);
+ spin_lock(&cq_table->lock);
+ radix_tree_delete(&cq_table->tree, cq->cqn);
+ spin_unlock(&cq_table->lock);
+
synchronize_irq(priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq);
if (priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq !=
priv->eq_table.eq[MLX4_EQ_ASYNC].irq)
synchronize_irq(priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
- spin_lock_irq(&cq_table->lock);
- radix_tree_delete(&cq_table->tree, cq->cqn);
- spin_unlock_irq(&cq_table->lock);
-
if (atomic_dec_and_test(&cq->refcount))
complete(&cq->free);
wait_for_completion(&cq->free);
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 28a4b34310b2..82bf1b539d87 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -439,8 +439,14 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
ring->cqn = priv->rx_cq[ring_ind]->mcq.cqn;
ring->stride = stride;
- if (ring->stride <= TXBB_SIZE)
+ if (ring->stride <= TXBB_SIZE) {
+ /* Stamp first unused send wqe */
+ __be32 *ptr = (__be32 *)ring->buf;
+ __be32 stamp = cpu_to_be32(1 << STAMP_SHIFT);
+ *ptr = stamp;
+ /* Move pointer to start of rx section */
ring->buf += TXBB_SIZE;
+ }
ring->log_stride = ffs(ring->stride) - 1;
ring->buf_size = ring->size * ring->stride;
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index d314d96dcb1c..d1fc7fa87b05 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -2955,6 +2955,9 @@ int mlx4_RST2INIT_QP_wrapper(struct mlx4_dev *dev, int slave,
put_res(dev, slave, srqn, RES_SRQ);
qp->srq = srq;
}
+
+ /* Save param3 for dynamic changes from VST back to VGT */
+ qp->param3 = qpc->param3;
put_res(dev, slave, rcqn, RES_CQ);
put_res(dev, slave, mtt_base, RES_MTT);
res_end_move(dev, slave, RES_QP, qpn);
@@ -3747,7 +3750,6 @@ int mlx4_INIT2RTR_QP_wrapper(struct mlx4_dev *dev, int slave,
int qpn = vhcr->in_modifier & 0x7fffff;
struct res_qp *qp;
u8 orig_sched_queue;
- __be32 orig_param3 = qpc->param3;
u8 orig_vlan_control = qpc->pri_path.vlan_control;
u8 orig_fvl_rx = qpc->pri_path.fvl_rx;
u8 orig_pri_path_fl = qpc->pri_path.fl;
@@ -3789,7 +3791,6 @@ out:
*/
if (!err) {
qp->sched_queue = orig_sched_queue;
- qp->param3 = orig_param3;
qp->vlan_control = orig_vlan_control;
qp->fvl_rx = orig_fvl_rx;
qp->pri_path_fl = orig_pri_path_fl;
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 9e62c93af96e..7c2d87befb51 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2602,8 +2602,15 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
if (ret < 0)
return ret;
- /* The port state is unknown until the reset completes. */
- if (!(portstatus & USB_PORT_STAT_RESET))
+ /*
+ * The port state is unknown until the reset completes.
+ *
+ * On top of that, some chips may require additional time
+ * to re-establish a connection after the reset is complete,
+ * so also wait for the connection to be re-established.
+ */
+ if (!(portstatus & USB_PORT_STAT_RESET) &&
+ (portstatus & USB_PORT_STAT_CONNECTION))
break;
/* switch to the long delay after two short delay failures */
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 210ff64857e1..ec7a50f98f57 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -235,6 +235,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
int status)
{
struct dwc3 *dwc = dep->dwc;
+ unsigned int unmap_after_complete = false;
int i;
if (req->queued) {
@@ -259,11 +260,19 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
if (req->request.status == -EINPROGRESS)
req->request.status = status;
- if (dwc->ep0_bounced && dep->number <= 1)
+ /*
+ * NOTICE we don't want to unmap before calling ->complete() if we're
+ * dealing with a bounced ep0 request. If we unmap it here, we would end
+ * up overwritting the contents of req->buf and this could confuse the
+ * gadget driver.
+ */
+ if (dwc->ep0_bounced && dep->number <= 1) {
dwc->ep0_bounced = false;
-
- usb_gadget_unmap_request(&dwc->gadget, &req->request,
- req->direction);
+ unmap_after_complete = true;
+ } else {
+ usb_gadget_unmap_request(&dwc->gadget,
+ &req->request, req->direction);
+ }
dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
req, dep->name, req->request.actual,
@@ -273,6 +282,10 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
spin_unlock(&dwc->lock);
usb_gadget_giveback_request(&dep->endpoint, &req->request);
spin_lock(&dwc->lock);
+
+ if (unmap_after_complete)
+ usb_gadget_unmap_request(&dwc->gadget,
+ &req->request, req->direction);
}
int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 3975ac809934..d76800108ddb 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4138,8 +4138,8 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
if (unlikely(!PAGE_ALIGNED(req->tp_block_size)))
goto out;
if (po->tp_version >= TPACKET_V3 &&
- (int)(req->tp_block_size -
- BLK_PLUS_PRIV(req_u->req3.tp_sizeof_priv)) <= 0)
+ req->tp_block_size <=
+ BLK_PLUS_PRIV((u64)req_u->req3.tp_sizeof_priv))
goto out;
if (unlikely(req->tp_frame_size < po->tp_hdrlen +
po->tp_reserve))

1801
patch/kernel/udoo-next/03-patch-4.4.62-63.patch Normal file
View file

File diff suppressed because it is too large Load diff

1016
patch/kernel/udoo-next/03-patch-4.4.63-64.patch Normal file
View file

File diff suppressed because it is too large Load diff

920
patch/kernel/udoo-next/03-patch-4.4.64-65.patch Normal file
View file

@ -0,0 +1,920 @@
diff --git a/Documentation/sysctl/fs.txt b/Documentation/sysctl/fs.txt
index 302b5ed616a6..35e17f748ca7 100644
--- a/Documentation/sysctl/fs.txt
+++ b/Documentation/sysctl/fs.txt
@@ -265,6 +265,13 @@ aio-nr can grow to.
==============================================================
+mount-max:
+
+This denotes the maximum number of mounts that may exist
+in a mount namespace.
+
+==============================================================
+
2. /proc/sys/fs/binfmt_misc
----------------------------------------------------------
diff --git a/Makefile b/Makefile
index 17708f5dc169..ddaef04f528a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 4
-SUBLEVEL = 64
+SUBLEVEL = 65
EXTRAVERSION =
NAME = Blurry Fish Butt
diff --git a/drivers/media/tuners/tuner-xc2028.c b/drivers/media/tuners/tuner-xc2028.c
index 4e941f00b600..082ff5608455 100644
--- a/drivers/media/tuners/tuner-xc2028.c
+++ b/drivers/media/tuners/tuner-xc2028.c
@@ -1403,11 +1403,12 @@ static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
* in order to avoid troubles during device release.
*/
kfree(priv->ctrl.fname);
+ priv->ctrl.fname = NULL;
memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
if (p->fname) {
priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
if (priv->ctrl.fname == NULL)
- rc = -ENOMEM;
+ return -ENOMEM;
}
/*
diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c
index 6df3ee561d52..515aa3f993f3 100644
--- a/drivers/net/wireless/hostap/hostap_hw.c
+++ b/drivers/net/wireless/hostap/hostap_hw.c
@@ -836,25 +836,30 @@ static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len,
spin_lock_bh(&local->baplock);
res = hfa384x_setup_bap(dev, BAP0, rid, 0);
- if (!res)
- res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec));
+ if (res)
+ goto unlock;
+
+ res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec));
+ if (res)
+ goto unlock;
if (le16_to_cpu(rec.len) == 0) {
/* RID not available */
res = -ENODATA;
+ goto unlock;
}
rlen = (le16_to_cpu(rec.len) - 1) * 2;
- if (!res && exact_len && rlen != len) {
+ if (exact_len && rlen != len) {
printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: "
"rid=0x%04x, len=%d (expected %d)\n",
dev->name, rid, rlen, len);
res = -ENODATA;
}
- if (!res)
- res = hfa384x_from_bap(dev, BAP0, buf, len);
+ res = hfa384x_from_bap(dev, BAP0, buf, len);
+unlock:
spin_unlock_bh(&local->baplock);
mutex_unlock(&local->rid_bap_mtx);
diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c
index 80f9de907563..5cc80b80c82b 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -823,7 +823,7 @@ static int receive_data(enum port_type index, struct nozomi *dc)
struct tty_struct *tty = tty_port_tty_get(&port->port);
int i, ret;
- read_mem32((u32 *) &size, addr, 4);
+ size = __le32_to_cpu(readl(addr));
/* DBG1( "%d bytes port: %d", size, index); */
if (tty && test_bit(TTY_THROTTLED, &tty->flags)) {
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 9982cb176ce8..830e2fd47642 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -562,8 +562,9 @@ static long vfio_pci_ioctl(void *device_data,
} else if (cmd == VFIO_DEVICE_SET_IRQS) {
struct vfio_irq_set hdr;
+ size_t size;
u8 *data = NULL;
- int ret = 0;
+ int max, ret = 0;
minsz = offsetofend(struct vfio_irq_set, count);
@@ -571,23 +572,31 @@ static long vfio_pci_ioctl(void *device_data,
return -EFAULT;
if (hdr.argsz < minsz || hdr.index >= VFIO_PCI_NUM_IRQS ||
+ hdr.count >= (U32_MAX - hdr.start) ||
hdr.flags & ~(VFIO_IRQ_SET_DATA_TYPE_MASK |
VFIO_IRQ_SET_ACTION_TYPE_MASK))
return -EINVAL;
- if (!(hdr.flags & VFIO_IRQ_SET_DATA_NONE)) {
- size_t size;
- int max = vfio_pci_get_irq_count(vdev, hdr.index);
+ max = vfio_pci_get_irq_count(vdev, hdr.index);
+ if (hdr.start >= max || hdr.start + hdr.count > max)
+ return -EINVAL;
- if (hdr.flags & VFIO_IRQ_SET_DATA_BOOL)
- size = sizeof(uint8_t);
- else if (hdr.flags & VFIO_IRQ_SET_DATA_EVENTFD)
- size = sizeof(int32_t);
- else
- return -EINVAL;
+ switch (hdr.flags & VFIO_IRQ_SET_DATA_TYPE_MASK) {
+ case VFIO_IRQ_SET_DATA_NONE:
+ size = 0;
+ break;
+ case VFIO_IRQ_SET_DATA_BOOL:
+ size = sizeof(uint8_t);
+ break;
+ case VFIO_IRQ_SET_DATA_EVENTFD:
+ size = sizeof(int32_t);
+ break;
+ default:
+ return -EINVAL;
+ }
- if (hdr.argsz - minsz < hdr.count * size ||
- hdr.start >= max || hdr.start + hdr.count > max)
+ if (size) {
+ if (hdr.argsz - minsz < hdr.count * size)
return -EINVAL;
data = memdup_user((void __user *)(arg + minsz),
diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
index 20e9a86d2dcf..5c8f767b6368 100644
--- a/drivers/vfio/pci/vfio_pci_intrs.c
+++ b/drivers/vfio/pci/vfio_pci_intrs.c
@@ -255,7 +255,7 @@ static int vfio_msi_enable(struct vfio_pci_device *vdev, int nvec, bool msix)
if (!is_irq_none(vdev))
return -EINVAL;
- vdev->ctx = kzalloc(nvec * sizeof(struct vfio_pci_irq_ctx), GFP_KERNEL);
+ vdev->ctx = kcalloc(nvec, sizeof(struct vfio_pci_irq_ctx), GFP_KERNEL);
if (!vdev->ctx)
return -ENOMEM;
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index ad8a5b757cc7..a443c6e54412 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -760,7 +760,7 @@ static int get_first_leaf(struct gfs2_inode *dip, u32 index,
int error;
error = get_leaf_nr(dip, index, &leaf_no);
- if (!error)
+ if (!IS_ERR_VALUE(error))
error = get_leaf(dip, leaf_no, bh_out);
return error;
@@ -976,7 +976,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
index = name->hash >> (32 - dip->i_depth);
error = get_leaf_nr(dip, index, &leaf_no);
- if (error)
+ if (IS_ERR_VALUE(error))
return error;
/* Get the old leaf block */
diff --git a/fs/mount.h b/fs/mount.h
index 3dc7dea5a357..13a4ebbbaa74 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -13,6 +13,8 @@ struct mnt_namespace {
u64 seq; /* Sequence number to prevent loops */
wait_queue_head_t poll;
u64 event;
+ unsigned int mounts; /* # of mounts in the namespace */
+ unsigned int pending_mounts;
};
struct mnt_pcp {
diff --git a/fs/namespace.c b/fs/namespace.c
index 7df3d406d3e0..f26d18d69712 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -27,6 +27,9 @@
#include "pnode.h"
#include "internal.h"
+/* Maximum number of mounts in a mount namespace */
+unsigned int sysctl_mount_max __read_mostly = 100000;
+
static unsigned int m_hash_mask __read_mostly;
static unsigned int m_hash_shift __read_mostly;
static unsigned int mp_hash_mask __read_mostly;
@@ -925,6 +928,9 @@ static void commit_tree(struct mount *mnt)
list_splice(&head, n->list.prev);
+ n->mounts += n->pending_mounts;
+ n->pending_mounts = 0;
+
__attach_mnt(mnt, parent);
touch_mnt_namespace(n);
}
@@ -1445,11 +1451,16 @@ static void umount_tree(struct mount *mnt, enum umount_tree_flags how)
propagate_umount(&tmp_list);
while (!list_empty(&tmp_list)) {
+ struct mnt_namespace *ns;
bool disconnect;
p = list_first_entry(&tmp_list, struct mount, mnt_list);
list_del_init(&p->mnt_expire);
list_del_init(&p->mnt_list);
- __touch_mnt_namespace(p->mnt_ns);
+ ns = p->mnt_ns;
+ if (ns) {
+ ns->mounts--;
+ __touch_mnt_namespace(ns);
+ }
p->mnt_ns = NULL;
if (how & UMOUNT_SYNC)
p->mnt.mnt_flags |= MNT_SYNC_UMOUNT;
@@ -1850,6 +1861,28 @@ static int invent_group_ids(struct mount *mnt, bool recurse)
return 0;
}
+int count_mounts(struct mnt_namespace *ns, struct mount *mnt)
+{
+ unsigned int max = READ_ONCE(sysctl_mount_max);
+ unsigned int mounts = 0, old, pending, sum;
+ struct mount *p;
+
+ for (p = mnt; p; p = next_mnt(p, mnt))
+ mounts++;
+
+ old = ns->mounts;
+ pending = ns->pending_mounts;
+ sum = old + pending;
+ if ((old > sum) ||
+ (pending > sum) ||
+ (max < sum) ||
+ (mounts > (max - sum)))
+ return -ENOSPC;
+
+ ns->pending_mounts = pending + mounts;
+ return 0;
+}
+
/*
* @source_mnt : mount tree to be attached
* @nd : place the mount tree @source_mnt is attached
@@ -1919,6 +1952,7 @@ static int attach_recursive_mnt(struct mount *source_mnt,
struct path *parent_path)
{
HLIST_HEAD(tree_list);
+ struct mnt_namespace *ns = dest_mnt->mnt_ns;
struct mountpoint *smp;
struct mount *child, *p;
struct hlist_node *n;
@@ -1931,6 +1965,13 @@ static int attach_recursive_mnt(struct mount *source_mnt,
if (IS_ERR(smp))
return PTR_ERR(smp);
+ /* Is there space to add these mounts to the mount namespace? */
+ if (!parent_path) {
+ err = count_mounts(ns, source_mnt);
+ if (err)
+ goto out;
+ }
+
if (IS_MNT_SHARED(dest_mnt)) {
err = invent_group_ids(source_mnt, true);
if (err)
@@ -1970,11 +2011,14 @@ static int attach_recursive_mnt(struct mount *source_mnt,
out_cleanup_ids:
while (!hlist_empty(&tree_list)) {
child = hlist_entry(tree_list.first, struct mount, mnt_hash);
+ child->mnt_parent->mnt_ns->pending_mounts = 0;
umount_tree(child, UMOUNT_SYNC);
}
unlock_mount_hash();
cleanup_group_ids(source_mnt, NULL);
out:
+ ns->pending_mounts = 0;
+
read_seqlock_excl(&mount_lock);
put_mountpoint(smp);
read_sequnlock_excl(&mount_lock);
@@ -2804,6 +2848,8 @@ static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
init_waitqueue_head(&new_ns->poll);
new_ns->event = 0;
new_ns->user_ns = get_user_ns(user_ns);
+ new_ns->mounts = 0;
+ new_ns->pending_mounts = 0;
return new_ns;
}
@@ -2853,6 +2899,7 @@ struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
q = new;
while (p) {
q->mnt_ns = new_ns;
+ new_ns->mounts++;
if (new_fs) {
if (&p->mnt == new_fs->root.mnt) {
new_fs->root.mnt = mntget(&q->mnt);
@@ -2891,6 +2938,7 @@ static struct mnt_namespace *create_mnt_ns(struct vfsmount *m)
struct mount *mnt = real_mount(m);
mnt->mnt_ns = new_ns;
new_ns->root = mnt;
+ new_ns->mounts++;
list_add(&mnt->mnt_list, &new_ns->list);
} else {
mntput(m);
diff --git a/fs/pnode.c b/fs/pnode.c
index b9f2af59b9a6..b394ca5307ec 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -259,7 +259,7 @@ static int propagate_one(struct mount *m)
read_sequnlock_excl(&mount_lock);
}
hlist_add_head(&child->mnt_hash, list);
- return 0;
+ return count_mounts(m->mnt_ns, child);
}
/*
diff --git a/fs/pnode.h b/fs/pnode.h
index 623f01772bec..dc87e65becd2 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -54,4 +54,5 @@ void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
struct mount *copy_tree(struct mount *, struct dentry *, int);
bool is_path_reachable(struct mount *, struct dentry *,
const struct path *root);
+int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
#endif /* _LINUX_PNODE_H */
diff --git a/include/linux/mount.h b/include/linux/mount.h
index f822c3c11377..dc6cd800cd5d 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -95,4 +95,6 @@ extern void mark_mounts_for_expiry(struct list_head *mounts);
extern dev_t name_to_dev_t(const char *name);
+extern unsigned int sysctl_mount_max;
+
#endif /* _LINUX_MOUNT_H */
diff --git a/kernel/events/core.c b/kernel/events/core.c
index e4b5494f05f8..784ab8fe8714 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -8250,6 +8250,37 @@ static int perf_event_set_clock(struct perf_event *event, clockid_t clk_id)
return 0;
}
+/*
+ * Variation on perf_event_ctx_lock_nested(), except we take two context
+ * mutexes.
+ */
+static struct perf_event_context *
+__perf_event_ctx_lock_double(struct perf_event *group_leader,
+ struct perf_event_context *ctx)
+{
+ struct perf_event_context *gctx;
+
+again:
+ rcu_read_lock();
+ gctx = READ_ONCE(group_leader->ctx);
+ if (!atomic_inc_not_zero(&gctx->refcount)) {
+ rcu_read_unlock();
+ goto again;
+ }
+ rcu_read_unlock();
+
+ mutex_lock_double(&gctx->mutex, &ctx->mutex);
+
+ if (group_leader->ctx != gctx) {
+ mutex_unlock(&ctx->mutex);
+ mutex_unlock(&gctx->mutex);
+ put_ctx(gctx);
+ goto again;
+ }
+
+ return gctx;
+}
+
/**
* sys_perf_event_open - open a performance event, associate it to a task/cpu
*
@@ -8486,8 +8517,26 @@ SYSCALL_DEFINE5(perf_event_open,
}
if (move_group) {
- gctx = group_leader->ctx;
- mutex_lock_double(&gctx->mutex, &ctx->mutex);
+ gctx = __perf_event_ctx_lock_double(group_leader, ctx);
+
+ /*
+ * Check if we raced against another sys_perf_event_open() call
+ * moving the software group underneath us.
+ */
+ if (!(group_leader->group_flags & PERF_GROUP_SOFTWARE)) {
+ /*
+ * If someone moved the group out from under us, check
+ * if this new event wound up on the same ctx, if so
+ * its the regular !move_group case, otherwise fail.
+ */
+ if (gctx != ctx) {
+ err = -EINVAL;
+ goto err_locked;
+ } else {
+ perf_event_ctx_unlock(group_leader, gctx);
+ move_group = 0;
+ }
+ }
} else {
mutex_lock(&ctx->mutex);
}
@@ -8582,7 +8631,7 @@ SYSCALL_DEFINE5(perf_event_open,
perf_unpin_context(ctx);
if (move_group)
- mutex_unlock(&gctx->mutex);
+ perf_event_ctx_unlock(group_leader, gctx);
mutex_unlock(&ctx->mutex);
if (task) {
@@ -8610,7 +8659,7 @@ SYSCALL_DEFINE5(perf_event_open,
err_locked:
if (move_group)
- mutex_unlock(&gctx->mutex);
+ perf_event_ctx_unlock(group_leader, gctx);
mutex_unlock(&ctx->mutex);
/* err_file: */
fput(event_file);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 2f0d157258a2..300d64162aff 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -65,6 +65,7 @@
#include <linux/sched/sysctl.h>
#include <linux/kexec.h>
#include <linux/bpf.h>
+#include <linux/mount.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
@@ -1749,6 +1750,14 @@ static struct ctl_table fs_table[] = {
.mode = 0644,
.proc_handler = proc_doulongvec_minmax,
},
+ {
+ .procname = "mount-max",
+ .data = &sysctl_mount_max,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &one,
+ },
{ }
};
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 3a00512addbc..37a3b05d175c 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -154,17 +154,18 @@ void ping_hash(struct sock *sk)
void ping_unhash(struct sock *sk)
{
struct inet_sock *isk = inet_sk(sk);
+
pr_debug("ping_unhash(isk=%p,isk->num=%u)\n", isk, isk->inet_num);
+ write_lock_bh(&ping_table.lock);
if (sk_hashed(sk)) {
- write_lock_bh(&ping_table.lock);
hlist_nulls_del(&sk->sk_nulls_node);
sk_nulls_node_init(&sk->sk_nulls_node);
sock_put(sk);
isk->inet_num = 0;
isk->inet_sport = 0;
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
- write_unlock_bh(&ping_table.lock);
}
+ write_unlock_bh(&ping_table.lock);
}
EXPORT_SYMBOL_GPL(ping_unhash);
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 77afe913d03d..9adedba78eea 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -326,10 +326,12 @@ replay:
nlh = nlmsg_hdr(skb);
err = 0;
- if (nlmsg_len(nlh) < sizeof(struct nfgenmsg) ||
- skb->len < nlh->nlmsg_len) {
- err = -EINVAL;
- goto ack;
+ if (nlh->nlmsg_len < NLMSG_HDRLEN ||
+ skb->len < nlh->nlmsg_len ||
+ nlmsg_len(nlh) < sizeof(struct nfgenmsg)) {
+ nfnl_err_reset(&err_list);
+ status |= NFNL_BATCH_FAILURE;
+ goto done;
}
/* Only requests are handled by the kernel */
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 648f2a67f314..cb1381513c82 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -381,6 +381,10 @@ int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b,
dev = dev_get_by_name(net, driver_name);
if (!dev)
return -ENODEV;
+ if (tipc_mtu_bad(dev, 0)) {
+ dev_put(dev);
+ return -EINVAL;
+ }
/* Associate TIPC bearer with L2 bearer */
rcu_assign_pointer(b->media_ptr, dev);
@@ -570,14 +574,19 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
if (!b_ptr)
return NOTIFY_DONE;
- b_ptr->mtu = dev->mtu;
-
switch (evt) {
case NETDEV_CHANGE:
if (netif_carrier_ok(dev))
break;
case NETDEV_GOING_DOWN:
+ tipc_reset_bearer(net, b_ptr);
+ break;
case NETDEV_CHANGEMTU:
+ if (tipc_mtu_bad(dev, 0)) {
+ bearer_disable(net, b_ptr);
+ break;
+ }
+ b_ptr->mtu = dev->mtu;
tipc_reset_bearer(net, b_ptr);
break;
case NETDEV_CHANGEADDR:
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 552185bc4773..5f11e18b1fa1 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -39,6 +39,7 @@
#include "netlink.h"
#include "core.h"
+#include "msg.h"
#include <net/genetlink.h>
#define MAX_MEDIA 3
@@ -61,6 +62,9 @@
#define TIPC_MEDIA_TYPE_IB 2
#define TIPC_MEDIA_TYPE_UDP 3
+/* minimum bearer MTU */
+#define TIPC_MIN_BEARER_MTU (MAX_H_SIZE + INT_H_SIZE)
+
/**
* struct tipc_node_map - set of node identifiers
* @count: # of nodes in set
@@ -226,4 +230,13 @@ void tipc_bearer_xmit(struct net *net, u32 bearer_id,
void tipc_bearer_bc_xmit(struct net *net, u32 bearer_id,
struct sk_buff_head *xmitq);
+/* check if device MTU is too low for tipc headers */
+static inline bool tipc_mtu_bad(struct net_device *dev, unsigned int reserve)
+{
+ if (dev->mtu >= TIPC_MIN_BEARER_MTU + reserve)
+ return false;
+ netdev_warn(dev, "MTU too low for tipc bearer\n");
+ return true;
+}
+
#endif /* _TIPC_BEARER_H */
diff --git a/net/tipc/core.c b/net/tipc/core.c
index 03a842870c52..e2bdb07a49a2 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -69,6 +69,7 @@ static int __net_init tipc_init_net(struct net *net)
if (err)
goto out_nametbl;
+ INIT_LIST_HEAD(&tn->dist_queue);
err = tipc_topsrv_start(net);
if (err)
goto out_subscr;
diff --git a/net/tipc/core.h b/net/tipc/core.h
index 18e95a8020cd..fe3b89e9cde4 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -103,6 +103,9 @@ struct tipc_net {
spinlock_t nametbl_lock;
struct name_table *nametbl;
+ /* Name dist queue */
+ struct list_head dist_queue;
+
/* Topology subscription server */
struct tipc_server *topsrv;
atomic_t subscription_count;
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index f51c8bdbea1c..c4c151bc000c 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -40,11 +40,6 @@
int sysctl_tipc_named_timeout __read_mostly = 2000;
-/**
- * struct tipc_dist_queue - queue holding deferred name table updates
- */
-static struct list_head tipc_dist_queue = LIST_HEAD_INIT(tipc_dist_queue);
-
struct distr_queue_item {
struct distr_item i;
u32 dtype;
@@ -67,6 +62,8 @@ static void publ_to_item(struct distr_item *i, struct publication *p)
/**
* named_prepare_buf - allocate & initialize a publication message
+ *
+ * The buffer returned is of size INT_H_SIZE + payload size
*/
static struct sk_buff *named_prepare_buf(struct net *net, u32 type, u32 size,
u32 dest)
@@ -171,9 +168,9 @@ static void named_distribute(struct net *net, struct sk_buff_head *list,
struct publication *publ;
struct sk_buff *skb = NULL;
struct distr_item *item = NULL;
- uint msg_dsz = (tipc_node_get_mtu(net, dnode, 0) / ITEM_SIZE) *
- ITEM_SIZE;
- uint msg_rem = msg_dsz;
+ u32 msg_dsz = ((tipc_node_get_mtu(net, dnode, 0) - INT_H_SIZE) /
+ ITEM_SIZE) * ITEM_SIZE;
+ u32 msg_rem = msg_dsz;
list_for_each_entry(publ, pls, local_list) {
/* Prepare next buffer: */
@@ -340,9 +337,11 @@ static bool tipc_update_nametbl(struct net *net, struct distr_item *i,
* tipc_named_add_backlog - add a failed name table update to the backlog
*
*/
-static void tipc_named_add_backlog(struct distr_item *i, u32 type, u32 node)
+static void tipc_named_add_backlog(struct net *net, struct distr_item *i,
+ u32 type, u32 node)
{
struct distr_queue_item *e;
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
unsigned long now = get_jiffies_64();
e = kzalloc(sizeof(*e), GFP_ATOMIC);
@@ -352,7 +351,7 @@ static void tipc_named_add_backlog(struct distr_item *i, u32 type, u32 node)
e->node = node;
e->expires = now + msecs_to_jiffies(sysctl_tipc_named_timeout);
memcpy(e, i, sizeof(*i));
- list_add_tail(&e->next, &tipc_dist_queue);
+ list_add_tail(&e->next, &tn->dist_queue);
}
/**
@@ -362,10 +361,11 @@ static void tipc_named_add_backlog(struct distr_item *i, u32 type, u32 node)
void tipc_named_process_backlog(struct net *net)
{
struct distr_queue_item *e, *tmp;
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
char addr[16];
unsigned long now = get_jiffies_64();
- list_for_each_entry_safe(e, tmp, &tipc_dist_queue, next) {
+ list_for_each_entry_safe(e, tmp, &tn->dist_queue, next) {
if (time_after(e->expires, now)) {
if (!tipc_update_nametbl(net, &e->i, e->node, e->dtype))
continue;
@@ -405,7 +405,7 @@ void tipc_named_rcv(struct net *net, struct sk_buff_head *inputq)
node = msg_orignode(msg);
while (count--) {
if (!tipc_update_nametbl(net, item, node, mtype))
- tipc_named_add_backlog(item, mtype, node);
+ tipc_named_add_backlog(net, item, mtype, node);
item++;
}
kfree_skb(skb);
diff --git a/net/tipc/node.c b/net/tipc/node.c
index d468aad6163e..2df0b98d4a32 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -728,7 +728,7 @@ static void tipc_node_fsm_evt(struct tipc_node *n, int evt)
state = SELF_UP_PEER_UP;
break;
case SELF_LOST_CONTACT_EVT:
- state = SELF_DOWN_PEER_LEAVING;
+ state = SELF_DOWN_PEER_DOWN;
break;
case SELF_ESTABL_CONTACT_EVT:
case PEER_LOST_CONTACT_EVT:
@@ -747,7 +747,7 @@ static void tipc_node_fsm_evt(struct tipc_node *n, int evt)
state = SELF_UP_PEER_UP;
break;
case PEER_LOST_CONTACT_EVT:
- state = SELF_LEAVING_PEER_DOWN;
+ state = SELF_DOWN_PEER_DOWN;
break;
case SELF_LOST_CONTACT_EVT:
case PEER_ESTABL_CONTACT_EVT:
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index b26b7a127773..65171f8e8c45 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -777,9 +777,11 @@ void tipc_sk_mcast_rcv(struct net *net, struct sk_buff_head *arrvq,
* @tsk: receiving socket
* @skb: pointer to message buffer.
*/
-static void tipc_sk_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb)
+static void tipc_sk_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb,
+ struct sk_buff_head *xmitq)
{
struct sock *sk = &tsk->sk;
+ u32 onode = tsk_own_node(tsk);
struct tipc_msg *hdr = buf_msg(skb);
int mtyp = msg_type(hdr);
int conn_cong;
@@ -792,7 +794,8 @@ static void tipc_sk_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb)
if (mtyp == CONN_PROBE) {
msg_set_type(hdr, CONN_PROBE_REPLY);
- tipc_sk_respond(sk, skb, TIPC_OK);
+ if (tipc_msg_reverse(onode, &skb, TIPC_OK))
+ __skb_queue_tail(xmitq, skb);
return;
} else if (mtyp == CONN_ACK) {
conn_cong = tsk_conn_cong(tsk);
@@ -1647,7 +1650,8 @@ static unsigned int rcvbuf_limit(struct sock *sk, struct sk_buff *buf)
*
* Returns true if message was added to socket receive queue, otherwise false
*/
-static bool filter_rcv(struct sock *sk, struct sk_buff *skb)
+static bool filter_rcv(struct sock *sk, struct sk_buff *skb,
+ struct sk_buff_head *xmitq)
{
struct socket *sock = sk->sk_socket;
struct tipc_sock *tsk = tipc_sk(sk);
@@ -1657,7 +1661,7 @@ static bool filter_rcv(struct sock *sk, struct sk_buff *skb)
int usr = msg_user(hdr);
if (unlikely(msg_user(hdr) == CONN_MANAGER)) {
- tipc_sk_proto_rcv(tsk, skb);
+ tipc_sk_proto_rcv(tsk, skb, xmitq);
return false;
}
@@ -1700,7 +1704,8 @@ static bool filter_rcv(struct sock *sk, struct sk_buff *skb)
return true;
reject:
- tipc_sk_respond(sk, skb, err);
+ if (tipc_msg_reverse(tsk_own_node(tsk), &skb, err))
+ __skb_queue_tail(xmitq, skb);
return false;
}
@@ -1716,9 +1721,24 @@ reject:
static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *skb)
{
unsigned int truesize = skb->truesize;
+ struct sk_buff_head xmitq;
+ u32 dnode, selector;
- if (likely(filter_rcv(sk, skb)))
+ __skb_queue_head_init(&xmitq);
+
+ if (likely(filter_rcv(sk, skb, &xmitq))) {
atomic_add(truesize, &tipc_sk(sk)->dupl_rcvcnt);
+ return 0;
+ }
+
+ if (skb_queue_empty(&xmitq))
+ return 0;
+
+ /* Send response/rejected message */
+ skb = __skb_dequeue(&xmitq);
+ dnode = msg_destnode(buf_msg(skb));
+ selector = msg_origport(buf_msg(skb));
+ tipc_node_xmit_skb(sock_net(sk), skb, dnode, selector);
return 0;
}
@@ -1732,12 +1752,13 @@ static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *skb)
* Caller must hold socket lock
*/
static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk,
- u32 dport)
+ u32 dport, struct sk_buff_head *xmitq)
{
+ unsigned long time_limit = jiffies + 2;
+ struct sk_buff *skb;
unsigned int lim;
atomic_t *dcnt;
- struct sk_buff *skb;
- unsigned long time_limit = jiffies + 2;
+ u32 onode;
while (skb_queue_len(inputq)) {
if (unlikely(time_after_eq(jiffies, time_limit)))
@@ -1749,20 +1770,22 @@ static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk,
/* Add message directly to receive queue if possible */
if (!sock_owned_by_user(sk)) {
- filter_rcv(sk, skb);
+ filter_rcv(sk, skb, xmitq);
continue;
}
/* Try backlog, compensating for double-counted bytes */
dcnt = &tipc_sk(sk)->dupl_rcvcnt;
- if (sk->sk_backlog.len)
+ if (!sk->sk_backlog.len)
atomic_set(dcnt, 0);
lim = rcvbuf_limit(sk, skb) + atomic_read(dcnt);
if (likely(!sk_add_backlog(sk, skb, lim)))
continue;
/* Overload => reject message back to sender */
- tipc_sk_respond(sk, skb, TIPC_ERR_OVERLOAD);
+ onode = tipc_own_addr(sock_net(sk));
+ if (tipc_msg_reverse(onode, &skb, TIPC_ERR_OVERLOAD))
+ __skb_queue_tail(xmitq, skb);
break;
}
}
@@ -1775,12 +1798,14 @@ static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk,
*/
void tipc_sk_rcv(struct net *net, struct sk_buff_head *inputq)
{
+ struct sk_buff_head xmitq;
u32 dnode, dport = 0;
int err;
struct tipc_sock *tsk;
struct sock *sk;
struct sk_buff *skb;
+ __skb_queue_head_init(&xmitq);
while (skb_queue_len(inputq)) {
dport = tipc_skb_peek_port(inputq, dport);
tsk = tipc_sk_lookup(net, dport);
@@ -1788,9 +1813,14 @@ void tipc_sk_rcv(struct net *net, struct sk_buff_head *inputq)
if (likely(tsk)) {
sk = &tsk->sk;
if (likely(spin_trylock_bh(&sk->sk_lock.slock))) {
- tipc_sk_enqueue(inputq, sk, dport);
+ tipc_sk_enqueue(inputq, sk, dport, &xmitq);
spin_unlock_bh(&sk->sk_lock.slock);
}
+ /* Send pending response/rejected messages, if any */
+ while ((skb = __skb_dequeue(&xmitq))) {
+ dnode = msg_destnode(buf_msg(skb));
+ tipc_node_xmit_skb(net, skb, dnode, dport);
+ }
sock_put(sk);
continue;
}
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 6af78c6276b4..78d6b78de29d 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -52,7 +52,7 @@
/* IANA assigned UDP port */
#define UDP_PORT_DEFAULT 6118
-#define UDP_MIN_HEADROOM 28
+#define UDP_MIN_HEADROOM 48
static const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = {
[TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC},
@@ -376,6 +376,11 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b,
udp_conf.local_ip.s_addr = htonl(INADDR_ANY);
udp_conf.use_udp_checksums = false;
ub->ifindex = dev->ifindex;
+ if (tipc_mtu_bad(dev, sizeof(struct iphdr) +
+ sizeof(struct udphdr))) {
+ err = -EINVAL;
+ goto err;
+ }
b->mtu = dev->mtu - sizeof(struct iphdr)
- sizeof(struct udphdr);
#if IS_ENABLED(CONFIG_IPV6)