Re: Linux 3.18.77

From: Greg KH
Date: Sun Oct 22 2017 - 14:02:00 EST

diff --git a/Makefile b/Makefile
index 22c320078a98..6f71303316d5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 18
-SUBLEVEL = 76
+SUBLEVEL = 77
EXTRAVERSION =
NAME = Diseased Newt

diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index 7e459b7ee708..ac56615c14f2 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -86,7 +86,14 @@ static inline void cr4_set_bits_and_update_boot(unsigned long mask)

static inline void __native_flush_tlb(void)
{
+ /*
+ * If current->mm == NULL then we borrow a mm which may change during a
+ * task switch and therefore we must not be preempted while we write CR3
+ * back:
+ */
+ preempt_disable();
native_write_cr3(native_read_cr3());
+ preempt_enable();
}

static inline void __native_flush_tlb_global_irq_disabled(void)
diff --git a/block/bsg-lib.c b/block/bsg-lib.c
index 341b8d858e67..650f427d915b 100644
--- a/block/bsg-lib.c
+++ b/block/bsg-lib.c
@@ -147,6 +147,7 @@ static int bsg_create_job(struct device *dev, struct request *req)
failjob_rls_rqst_payload:
kfree(job->request_payload.sg_list);
failjob_rls_job:
+ kfree(job);
return -ENOMEM;
}

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 87bbc9c1e681..7bd153fd68fe 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -290,6 +290,7 @@ config CRYPTO_XTS
select CRYPTO_BLKCIPHER
select CRYPTO_MANAGER
select CRYPTO_GF128MUL
+ select CRYPTO_ECB
help
XTS: IEEE1619/D16 narrow block cipher use with aes-xts-plain,
key size 256, 384 or 512 bits. This implementation currently
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index e8075400fc1b..7113c95f5ad0 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1707,6 +1707,7 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr)
return -EINVAL;
}
req_payload.num_slots = mgr->proposed_vcpis[i]->num_slots;
+ req_payload.vcpi = mgr->proposed_vcpis[i]->vcpi;
} else {
port = NULL;
req_payload.num_slots = 0;
@@ -1722,6 +1723,7 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr)
if (req_payload.num_slots) {
drm_dp_create_payload_step1(mgr, mgr->proposed_vcpis[i]->vcpi, &req_payload);
mgr->payloads[i].num_slots = req_payload.num_slots;
+ mgr->payloads[i].vcpi = req_payload.vcpi;
} else if (mgr->payloads[i].num_slots) {
mgr->payloads[i].num_slots = 0;
drm_dp_destroy_payload_step1(mgr, port, port->vcpi.vcpi, &mgr->payloads[i]);
diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index ce93bd8e3f68..a483747cdc9b 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -1223,7 +1223,7 @@ static int xadc_probe(struct platform_device *pdev)

ret = xadc->ops->setup(pdev, indio_dev, irq);
if (ret)
- goto err_free_samplerate_trigger;
+ goto err_clk_disable_unprepare;

ret = request_threaded_irq(irq, xadc->ops->interrupt_handler,
xadc->ops->threaded_interrupt_handler,
@@ -1284,6 +1284,8 @@ static int xadc_probe(struct platform_device *pdev)

err_free_irq:
free_irq(irq, indio_dev);
+err_clk_disable_unprepare:
+ clk_disable_unprepare(xadc->clk);
err_free_samplerate_trigger:
if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
iio_trigger_free(xadc->samplerate_trigger);
@@ -1293,8 +1295,6 @@ err_free_convst_trigger:
err_triggered_buffer_cleanup:
if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
iio_triggered_buffer_cleanup(indio_dev);
-err_clk_disable_unprepare:
- clk_disable_unprepare(xadc->clk);
err_device_free:
kfree(indio_dev->channels);

diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
index bbbaf5de65d2..c03773bf02c7 100644
--- a/drivers/irqchip/irq-crossbar.c
+++ b/drivers/irqchip/irq-crossbar.c
@@ -175,7 +175,8 @@ static const struct irq_domain_ops routable_irq_domain_ops = {

static int __init crossbar_of_init(struct device_node *node)
{
- int i, size, max = 0, reserved = 0, entry;
+ int i, size, reserved = 0;
+ u32 max = 0, entry;
const __be32 *irqsr;
int ret = -ENOMEM;

diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index bf3fbd00a091..64b586458d3d 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -828,7 +828,6 @@ isdn_ppp_write(int min, struct file *file, const char __user *buf, int count)
isdn_net_local *lp;
struct ippp_struct *is;
int proto;
- unsigned char protobuf[4];

is = file->private_data;

@@ -842,24 +841,28 @@ isdn_ppp_write(int min, struct file *file, const char __user *buf, int count)
if (!lp)
printk(KERN_DEBUG "isdn_ppp_write: lp == NULL\n");
else {
- /*
- * Don't reset huptimer for
- * LCP packets. (Echo requests).
- */
- if (copy_from_user(protobuf, buf, 4))
- return -EFAULT;
- proto = PPP_PROTOCOL(protobuf);
- if (proto != PPP_LCP)
- lp->huptimer = 0;
+ if (lp->isdn_device < 0 || lp->isdn_channel < 0) {
+ unsigned char protobuf[4];
+ /*
+ * Don't reset huptimer for
+ * LCP packets. (Echo requests).
+ */
+ if (copy_from_user(protobuf, buf, 4))
+ return -EFAULT;
+
+ proto = PPP_PROTOCOL(protobuf);
+ if (proto != PPP_LCP)
+ lp->huptimer = 0;

- if (lp->isdn_device < 0 || lp->isdn_channel < 0)
return 0;
+ }

if ((dev->drv[lp->isdn_device]->flags & DRV_FLAG_RUNNING) &&
lp->dialstate == 0 &&
(lp->flags & ISDN_NET_CONNECTED)) {
unsigned short hl;
struct sk_buff *skb;
+ unsigned char *cpy_buf;
/*
* we need to reserve enough space in front of
* sk_buff. old call to dev_alloc_skb only reserved
@@ -872,11 +875,21 @@ isdn_ppp_write(int min, struct file *file, const char __user *buf, int count)
return count;
}
skb_reserve(skb, hl);
- if (copy_from_user(skb_put(skb, count), buf, count))
+ cpy_buf = skb_put(skb, count);
+ if (copy_from_user(cpy_buf, buf, count))
{
kfree_skb(skb);
return -EFAULT;
}
+
+ /*
+ * Don't reset huptimer for
+ * LCP packets. (Echo requests).
+ */
+ proto = PPP_PROTOCOL(cpy_buf);
+ if (proto != PPP_LCP)
+ lp->huptimer = 0;
+
if (is->debug & 0x40) {
printk(KERN_DEBUG "ppp xmit: len %d\n", (int) skb->len);
isdn_ppp_frame_log("xmit", skb->data, skb->len, 32, is->unit, lp->ppp_slot);
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 90de6e1ad06e..7fea86c06783 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -648,8 +648,6 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
return -ENOSYS;
}

- mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
-
dev->caps.hca_core_clock = hca_param.hca_core_clock;

memset(&dev_cap, 0, sizeof(dev_cap));
diff --git a/drivers/scsi/device_handler/scsi_dh_emc.c b/drivers/scsi/device_handler/scsi_dh_emc.c
index 84765384c47c..d03f0568bfda 100644
--- a/drivers/scsi/device_handler/scsi_dh_emc.c
+++ b/drivers/scsi/device_handler/scsi_dh_emc.c
@@ -464,7 +464,7 @@ static int clariion_prep_fn(struct scsi_device *sdev, struct request *req)
static int clariion_std_inquiry(struct scsi_device *sdev,
struct clariion_dh_data *csdev)
{
- int err;
+ int err = SCSI_DH_OK;
char *sp_model;

err = send_inquiry_cmd(sdev, 0, csdev);
diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
index f900de64e267..b58c97ab1f8e 100644
--- a/drivers/target/iscsi/iscsi_target_erl0.c
+++ b/drivers/target/iscsi/iscsi_target_erl0.c
@@ -45,10 +45,8 @@ void iscsit_set_dataout_sequence_values(
*/
if (cmd->unsolicited_data) {
cmd->seq_start_offset = cmd->write_data_done;
- cmd->seq_end_offset = (cmd->write_data_done +
- ((cmd->se_cmd.data_length >
- conn->sess->sess_ops->FirstBurstLength) ?
- conn->sess->sess_ops->FirstBurstLength : cmd->se_cmd.data_length));
+ cmd->seq_end_offset = min(cmd->se_cmd.data_length,
+ conn->sess->sess_ops->FirstBurstLength);
return;
}

diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
index beb3142a1414..09495f515fa9 100644
--- a/drivers/tty/goldfish.c
+++ b/drivers/tty/goldfish.c
@@ -295,7 +295,7 @@ static int goldfish_tty_probe(struct platform_device *pdev)

tty_unregister_device(goldfish_tty_driver, i);
err_tty_register_device_failed:
- free_irq(irq, qtty);
+ free_irq(irq, pdev);
err_request_irq_failed:
goldfish_tty_current_line_count--;
if (goldfish_tty_current_line_count == 0)
diff --git a/drivers/watchdog/kempld_wdt.c b/drivers/watchdog/kempld_wdt.c
index d9c1a1601926..e88d1346be5c 100644
--- a/drivers/watchdog/kempld_wdt.c
+++ b/drivers/watchdog/kempld_wdt.c
@@ -140,12 +140,19 @@ static int kempld_wdt_set_stage_timeout(struct kempld_wdt_data *wdt_data,
unsigned int timeout)
{
struct kempld_device_data *pld = wdt_data->pld;
- u32 prescaler = kempld_prescaler[PRESCALER_21];
+ u32 prescaler;
u64 stage_timeout64;
u32 stage_timeout;
u32 remainder;
u8 stage_cfg;

+#if GCC_VERSION < 40400
+ /* work around a bug compiling do_div() */
+ prescaler = READ_ONCE(kempld_prescaler[PRESCALER_21]);
+#else
+ prescaler = kempld_prescaler[PRESCALER_21];
+#endif
+
if (!stage)
return -EINVAL;

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 3cc2d1dfd7bf..fc2472ef5011 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -1640,6 +1640,9 @@ static int is_inode_existent(struct send_ctx *sctx, u64 ino, u64 gen)
{
int ret;

+ if (ino == BTRFS_FIRST_FREE_OBJECTID)
+ return 1;
+
ret = get_cur_inode_state(sctx, ino, gen);
if (ret < 0)
goto out;
@@ -1825,7 +1828,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
* not delted and then re-created, if it was then we have no overwrite
* and we can just unlink this entry.
*/
- if (sctx->parent_root) {
+ if (sctx->parent_root && dir != BTRFS_FIRST_FREE_OBJECTID) {
ret = get_inode_info(sctx->parent_root, dir, NULL, &gen, NULL,
NULL, NULL, NULL);
if (ret < 0 && ret != -ENOENT)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a9117695da6c..c2434d72681e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4895,8 +4895,6 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
sbi->s_want_extra_isize,
iloc, handle);
if (ret) {
- ext4_set_inode_state(inode,
- EXT4_STATE_NO_EXPAND);
if (mnt_count !=
le16_to_cpu(sbi->s_es->s_mnt_count)) {
ext4_warning(inode->i_sb,
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index c71329f05b26..c57c83806fb9 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1291,11 +1291,13 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize);

down_write(&EXT4_I(inode)->xattr_sem);
+ /*
+ * Set EXT4_STATE_NO_EXPAND to avoid recursion when marking inode dirty
+ */
+ ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND);
retry:
- if (EXT4_I(inode)->i_extra_isize >= new_extra_isize) {
- up_write(&EXT4_I(inode)->xattr_sem);
- return 0;
- }
+ if (EXT4_I(inode)->i_extra_isize >= new_extra_isize)
+ goto out;

header = IHDR(inode, raw_inode);
entry = IFIRST(header);
@@ -1324,8 +1326,7 @@ retry:
(void *)header, total_ino,
inode->i_sb->s_blocksize);
EXT4_I(inode)->i_extra_isize = new_extra_isize;
- error = 0;
- goto cleanup;
+ goto out;
}

/*
@@ -1485,6 +1486,8 @@ retry:
kfree(bs);
}
brelse(bh);
+out:
+ ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
up_write(&EXT4_I(inode)->xattr_sem);
return 0;

@@ -1496,6 +1499,10 @@ cleanup:
kfree(is);
kfree(bs);
brelse(bh);
+ /*
+ * We deliberately leave EXT4_STATE_NO_EXPAND set here since inode
+ * size expansion failed.
+ */
up_write(&EXT4_I(inode)->xattr_sem);
return error;
}
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 12fe56b2e870..2402353f290c 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -531,6 +531,7 @@ void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res)
init_waitqueue_head(&res->l_event);
INIT_LIST_HEAD(&res->l_blocked_list);
INIT_LIST_HEAD(&res->l_mask_waiters);
+ INIT_LIST_HEAD(&res->l_holders);
}

void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
@@ -748,6 +749,50 @@ void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
res->l_flags = 0UL;
}

+/*
+ * Keep a list of processes who have interest in a lockres.
+ * Note: this is now only uesed for check recursive cluster locking.
+ */
+static inline void ocfs2_add_holder(struct ocfs2_lock_res *lockres,
+ struct ocfs2_lock_holder *oh)
+{
+ INIT_LIST_HEAD(&oh->oh_list);
+ oh->oh_owner_pid = get_pid(task_pid(current));
+
+ spin_lock(&lockres->l_lock);
+ list_add_tail(&oh->oh_list, &lockres->l_holders);
+ spin_unlock(&lockres->l_lock);
+}
+
+static inline void ocfs2_remove_holder(struct ocfs2_lock_res *lockres,
+ struct ocfs2_lock_holder *oh)
+{
+ spin_lock(&lockres->l_lock);
+ list_del(&oh->oh_list);
+ spin_unlock(&lockres->l_lock);
+
+ put_pid(oh->oh_owner_pid);
+}
+
+static inline int ocfs2_is_locked_by_me(struct ocfs2_lock_res *lockres)
+{
+ struct ocfs2_lock_holder *oh;
+ struct pid *pid;
+
+ /* look in the list of holders for one with the current task as owner */
+ spin_lock(&lockres->l_lock);
+ pid = task_pid(current);
+ list_for_each_entry(oh, &lockres->l_holders, oh_list) {
+ if (oh->oh_owner_pid == pid) {
+ spin_unlock(&lockres->l_lock);
+ return 1;
+ }
+ }
+ spin_unlock(&lockres->l_lock);
+
+ return 0;
+}
+
static inline void ocfs2_inc_holders(struct ocfs2_lock_res *lockres,
int level)
{
@@ -2313,8 +2358,9 @@ int ocfs2_inode_lock_full_nested(struct inode *inode,
goto getbh;
}

- if (ocfs2_mount_local(osb))
- goto local;
+ if ((arg_flags & OCFS2_META_LOCK_GETBH) ||
+ ocfs2_mount_local(osb))
+ goto update;

if (!(arg_flags & OCFS2_META_LOCK_RECOVERY))
ocfs2_wait_for_recovery(osb);
@@ -2343,7 +2389,7 @@ int ocfs2_inode_lock_full_nested(struct inode *inode,
if (!(arg_flags & OCFS2_META_LOCK_RECOVERY))
ocfs2_wait_for_recovery(osb);

-local:
+update:
/*
* We only see this flag if we're being called from
* ocfs2_read_locked_inode(). It means we're locking an inode
@@ -2485,6 +2531,59 @@ void ocfs2_inode_unlock(struct inode *inode,
ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
}

+/*
+ * This _tracker variantes are introduced to deal with the recursive cluster
+ * locking issue. The idea is to keep track of a lock holder on the stack of
+ * the current process. If there's a lock holder on the stack, we know the
+ * task context is already protected by cluster locking. Currently, they're
+ * used in some VFS entry routines.
+ *
+ * return < 0 on error, return == 0 if there's no lock holder on the stack
+ * before this call, return == 1 if this call would be a recursive locking.
+ */
+int ocfs2_inode_lock_tracker(struct inode *inode,
+ struct buffer_head **ret_bh,
+ int ex,
+ struct ocfs2_lock_holder *oh)
+{
+ int status;
+ int arg_flags = 0, has_locked;
+ struct ocfs2_lock_res *lockres;
+
+ lockres = &OCFS2_I(inode)->ip_inode_lockres;
+ has_locked = ocfs2_is_locked_by_me(lockres);
+ /* Just get buffer head if the cluster lock has been taken */
+ if (has_locked)
+ arg_flags = OCFS2_META_LOCK_GETBH;
+
+ if (likely(!has_locked || ret_bh)) {
+ status = ocfs2_inode_lock_full(inode, ret_bh, ex, arg_flags);
+ if (status < 0) {
+ if (status != -ENOENT)
+ mlog_errno(status);
+ return status;
+ }
+ }
+ if (!has_locked)
+ ocfs2_add_holder(lockres, oh);
+
+ return has_locked;
+}
+
+void ocfs2_inode_unlock_tracker(struct inode *inode,
+ int ex,
+ struct ocfs2_lock_holder *oh,
+ int had_lock)
+{
+ struct ocfs2_lock_res *lockres;
+
+ lockres = &OCFS2_I(inode)->ip_inode_lockres;
+ if (!had_lock) {
+ ocfs2_remove_holder(lockres, oh);
+ ocfs2_inode_unlock(inode, ex);
+ }
+}
+
int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno)
{
struct ocfs2_lock_res *lockres;
diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h
index d293a22c32c5..a7fc18ba0dc1 100644
--- a/fs/ocfs2/dlmglue.h
+++ b/fs/ocfs2/dlmglue.h
@@ -70,6 +70,11 @@ struct ocfs2_orphan_scan_lvb {
__be32 lvb_os_seqno;
};

+struct ocfs2_lock_holder {
+ struct list_head oh_list;
+ struct pid *oh_owner_pid;
+};
+
/* ocfs2_inode_lock_full() 'arg_flags' flags */
/* don't wait on recovery. */
#define OCFS2_META_LOCK_RECOVERY (0x01)
@@ -77,6 +82,8 @@ struct ocfs2_orphan_scan_lvb {
#define OCFS2_META_LOCK_NOQUEUE (0x02)
/* don't block waiting for the downconvert thread, instead return -EAGAIN */
#define OCFS2_LOCK_NONBLOCK (0x04)
+/* just get back disk inode bh if we've got cluster lock. */
+#define OCFS2_META_LOCK_GETBH (0x08)

/* Locking subclasses of inode cluster lock */
enum {
@@ -170,4 +177,15 @@ void ocfs2_put_dlm_debug(struct ocfs2_dlm_debug *dlm_debug);

/* To set the locking protocol on module initialization */
void ocfs2_set_locking_protocol(void);
+
+/* The _tracker pair is used to avoid cluster recursive locking */
+int ocfs2_inode_lock_tracker(struct inode *inode,
+ struct buffer_head **ret_bh,
+ int ex,
+ struct ocfs2_lock_holder *oh);
+void ocfs2_inode_unlock_tracker(struct inode *inode,
+ int ex,
+ struct ocfs2_lock_holder *oh,
+ int had_lock);
+
#endif /* DLMGLUE_H */
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index bbec539230fd..6a90e364f648 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -166,6 +166,7 @@ struct ocfs2_lock_res {

struct list_head l_blocked_list;
struct list_head l_mask_waiters;
+ struct list_head l_holders;

unsigned long l_flags;
char l_name[OCFS2_LOCK_ID_MAX_LEN];
diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h
index cccdcfd14973..f348c736e6e0 100644
--- a/include/net/sctp/ulpevent.h
+++ b/include/net/sctp/ulpevent.h
@@ -141,8 +141,12 @@ __u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event);
static inline int sctp_ulpevent_type_enabled(__u16 sn_type,
struct sctp_event_subscribe *mask)
{
+ int offset = sn_type - SCTP_SN_TYPE_BASE;
char *amask = (char *) mask;
- return amask[sn_type - SCTP_SN_TYPE_BASE];
+
+ if (offset >= sizeof(struct sctp_event_subscribe))
+ return 0;
+ return amask[offset];
}

/* Given an event subscription, is this event enabled? */
diff --git a/include/uapi/linux/mroute6.h b/include/uapi/linux/mroute6.h
index ce91215cf7e6..e0b566dc72ef 100644
--- a/include/uapi/linux/mroute6.h
+++ b/include/uapi/linux/mroute6.h
@@ -3,6 +3,7 @@

#include <linux/types.h>
#include <linux/sockios.h>
+#include <linux/in6.h> /* For struct sockaddr_in6. */

/*
* Based on the MROUTING 3.5 defines primarily to keep
diff --git a/include/uapi/linux/rds.h b/include/uapi/linux/rds.h
index 91950950aa59..25e865320288 100644
--- a/include/uapi/linux/rds.h
+++ b/include/uapi/linux/rds.h
@@ -35,6 +35,7 @@
#define _LINUX_RDS_H

#include <linux/types.h>
+#include <linux/socket.h> /* For __kernel_sockaddr_storage. */

#define RDS_IB_ABI_VERSION 0x301

@@ -213,7 +214,7 @@ struct rds_get_mr_args {
};

struct rds_get_mr_for_dest_args {
- struct sockaddr_storage dest_addr;
+ struct __kernel_sockaddr_storage dest_addr;
struct rds_iovec vec;
uint64_t cookie_addr;
uint64_t flags;
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index eac45b688c08..76cd19dcb7f0 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -932,7 +932,8 @@ static int check_alu_op(struct reg_state *regs, struct bpf_insn *insn)
}
} else {
if (insn->src_reg != BPF_REG_0 || insn->off != 0 ||
- (insn->imm != 16 && insn->imm != 32 && insn->imm != 64)) {
+ (insn->imm != 16 && insn->imm != 32 && insn->imm != 64) ||
+ BPF_CLASS(insn->code) == BPF_ALU64) {
verbose("BPF_END uses reserved fields\n");
return -EINVAL;
}
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 88d0d4420ad2..3467618cc0ea 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -3107,10 +3107,17 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
if (depth) {
hlock = curr->held_locks + depth - 1;
if (hlock->class_idx == class_idx && nest_lock) {
- if (hlock->references)
+ if (hlock->references) {
+ /*
+ * Check: unsigned int references:12, overflow.
+ */
+ if (DEBUG_LOCKS_WARN_ON(hlock->references == (1 << 12)-1))
+ return 0;
+
hlock->references++;
- else
+ } else {
hlock->references = 2;
+ }

return 1;
}
diff --git a/net/core/sock.c b/net/core/sock.c
index 8c8fb6ab8a26..55f35765c6e0 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1488,6 +1488,8 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)

sock_copy(newsk, sk);

+ newsk->sk_prot_creator = sk->sk_prot;
+
/* SANITY */
get_net(sock_net(newsk));
sk_node_init(&newsk->sk_node);
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index 15046aec8484..1b8a82f0f6ec 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -156,6 +156,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
struct ip_tunnel_parm *parms = &tunnel->parms;
struct dst_entry *dst = skb_dst(skb);
struct net_device *tdev; /* Device to other host */
+ int pkt_len = skb->len;
int err;

if (!dst) {
@@ -199,7 +200,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,

err = dst_output(skb);
if (net_xmit_eval(err) == 0)
- err = skb->len;
+ err = pkt_len;
iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
return NETDEV_TX_OK;

diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 591e2355cc9e..a11083d37789 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -416,6 +416,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
struct net_device_stats *stats = &t->dev->stats;
struct dst_entry *dst = skb_dst(skb);
struct net_device *tdev;
+ int pkt_len = skb->len;
int err = -1;

if (!dst)
@@ -450,7 +451,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);

u64_stats_update_begin(&tstats->syncp);
- tstats->tx_bytes += skb->len;
+ tstats->tx_bytes += pkt_len;
tstats->tx_packets++;
u64_stats_update_end(&tstats->syncp);
} else {
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 508154a04558..b5f3c175331c 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1317,6 +1317,9 @@ static void l2tp_tunnel_del_work(struct work_struct *work)
struct sock *sk = NULL;

tunnel = container_of(work, struct l2tp_tunnel, del_work);
+
+ l2tp_tunnel_closeall(tunnel);
+
sk = l2tp_tunnel_sock_lookup(tunnel);
if (!sk)
goto out;
@@ -1639,15 +1642,12 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_create);

/* This function is used by the netlink TUNNEL_DELETE command.
*/
-int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel)
+void l2tp_tunnel_delete(struct l2tp_tunnel *tunnel)
{
- l2tp_tunnel_inc_refcount(tunnel);
- l2tp_tunnel_closeall(tunnel);
- if (false == queue_work(l2tp_wq, &tunnel->del_work)) {
- l2tp_tunnel_dec_refcount(tunnel);
- return 1;
+ if (!test_and_set_bit(0, &tunnel->dead)) {
+ l2tp_tunnel_inc_refcount(tunnel);
+ queue_work(l2tp_wq, &tunnel->del_work);
}
- return 0;
}
EXPORT_SYMBOL_GPL(l2tp_tunnel_delete);

diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index e9ec7d2cc357..1c1a033a546a 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -169,6 +169,9 @@ struct l2tp_tunnel_cfg {

struct l2tp_tunnel {
int magic; /* Should be L2TP_TUNNEL_MAGIC */
+
+ unsigned long dead;
+
struct rcu_head rcu;
rwlock_t hlist_lock; /* protect session_hlist */
struct hlist_head session_hlist[L2TP_HASH_SIZE];
@@ -252,7 +255,7 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id,
u32 peer_tunnel_id, struct l2tp_tunnel_cfg *cfg,
struct l2tp_tunnel **tunnelp);
void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel);
-int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel);
+void l2tp_tunnel_delete(struct l2tp_tunnel *tunnel);
struct l2tp_session *l2tp_session_create(int priv_size,
struct l2tp_tunnel *tunnel,
u32 session_id, u32 peer_session_id,
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index 26af45193ab7..7ebdd7ff8ec0 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -392,7 +392,7 @@ static inline int __nf_ct_expect_check(struct nf_conntrack_expect *expect)
struct net *net = nf_ct_exp_net(expect);
struct hlist_node *next;
unsigned int h;
- int ret = 1;
+ int ret = 0;

if (!master_help) {
ret = -ESHUTDOWN;
@@ -442,7 +442,7 @@ int nf_ct_expect_related_report(struct nf_conntrack_expect *expect,

spin_lock_bh(&nf_conntrack_expect_lock);
ret = __nf_ct_expect_check(expect);
- if (ret <= 0)
+ if (ret < 0)
goto out;

ret = nf_ct_expect_insert(expect);
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 7effa07c4491..dc474fd81d71 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1429,9 +1429,6 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
return -EINVAL;
}

- if (!po->running)
- return -EINVAL;
-
if (po->fanout)
return -EALREADY;

@@ -1469,7 +1466,10 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
list_add(&match->list, &fanout_list);
}
err = -EINVAL;
- if (match->type == type &&
+
+ spin_lock(&po->bind_lock);
+ if (po->running &&
+ match->type == type &&
match->prot_hook.type == po->prot_hook.type &&
match->prot_hook.dev == po->prot_hook.dev) {
err = -ENOSPC;
@@ -1481,6 +1481,13 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
err = 0;
}
}
+ spin_unlock(&po->bind_lock);
+
+ if (err && !atomic_read(&match->sk_ref)) {
+ list_del(&match->list);
+ kfree(match);
+ }
+
out:
mutex_unlock(&fanout_mutex);
return err;
@@ -2655,13 +2662,15 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex,
int ret = 0;
bool unlisted = false;

- if (po->fanout)
- return -EINVAL;
-
lock_sock(sk);
spin_lock(&po->bind_lock);
rcu_read_lock();

+ if (po->fanout) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
if (name) {
dev = dev_get_by_name_rcu(sock_net(sk), name);
if (!dev) {