[gentoo-commits] proj/linux-patches:3.10 commit in: /

[Mike Pagano]

commit:     522c40275ae0a217e0c6ca0507d8e22e000f53ef
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Jun 30 13:01:16 2015 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Jun 30 13:01:16 2015 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=522c4027

Linux patch 3.10.82

 0000_README              |   4 +
 1081_linux-3.10.82.patch | 263 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 267 insertions(+)

diff --git a/0000_README b/0000_README
index 574c6c0..5e45831 100644
--- a/0000_README
+++ b/0000_README
@@ -366,6 +366,10 @@ Patch:  1080_linux-3.10.81.patch
 From:   http://www.kernel.org
 Desc:   Linux 3.10.81
 
+Patch:  1081_linux-3.10.82.patch
+From:   http://www.kernel.org
+Desc:   Linux 3.10.82
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.

diff --git a/1081_linux-3.10.82.patch b/1081_linux-3.10.82.patch
new file mode 100644
index 0000000..b14a1fe
--- /dev/null
+++ b/1081_linux-3.10.82.patch
@@ -0,0 +1,263 @@
+diff --git a/Makefile b/Makefile
+index 6d19e37d36d5..5e3e665a10b7 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 3
+ PATCHLEVEL = 10
+-SUBLEVEL = 81
++SUBLEVEL = 82
+ EXTRAVERSION =
+ NAME = TOSSUG Baby Fish
+ 
+diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c
+index d1939a9539c0..04aefffb4dd9 100644
+--- a/drivers/crypto/caam/caamrng.c
++++ b/drivers/crypto/caam/caamrng.c
+@@ -56,7 +56,7 @@
+ 
+ /* Buffer, its dma address and lock */
+ struct buf_data {
+-	u8 buf[RN_BUF_SIZE];
++	u8 buf[RN_BUF_SIZE] ____cacheline_aligned;
+ 	dma_addr_t addr;
+ 	struct completion filled;
+ 	u32 hw_desc[DESC_JOB_O_LEN];
+diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
+index f6341e8622ee..7bd2acce9f81 100644
+--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
++++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
+@@ -1487,6 +1487,11 @@ static int mga_vga_mode_valid(struct drm_connector *connector,
+ 		return MODE_BANDWIDTH;
+ 	}
+ 
++	if ((mode->hdisplay % 8) != 0 || (mode->hsync_start % 8) != 0 ||
++	    (mode->hsync_end % 8) != 0 || (mode->htotal % 8) != 0) {
++		return MODE_H_ILLEGAL;
++	}
++
+ 	if (mode->crtc_hdisplay > 2048 || mode->crtc_hsync_start > 4096 ||
+ 	    mode->crtc_hsync_end > 4096 || mode->crtc_htotal > 4096 ||
+ 	    mode->crtc_vdisplay > 2048 || mode->crtc_vsync_start > 4096 ||
+diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
+index 572579f87de4..90861416b9e9 100644
+--- a/drivers/scsi/lpfc/lpfc_sli.c
++++ b/drivers/scsi/lpfc/lpfc_sli.c
+@@ -263,6 +263,16 @@ lpfc_sli4_eq_get(struct lpfc_queue *q)
+ 		return NULL;
+ 
+ 	q->hba_index = idx;
++
++	/*
++	 * insert barrier for instruction interlock : data from the hardware
++	 * must have the valid bit checked before it can be copied and acted
++	 * upon. Given what was seen in lpfc_sli4_cq_get() of speculative
++	 * instructions allowing action on content before valid bit checked,
++	 * add barrier here as well. May not be needed as "content" is a
++	 * single 32-bit entity here (vs multi word structure for cq's).
++	 */
++	mb();
+ 	return eqe;
+ }
+ 
+@@ -368,6 +378,17 @@ lpfc_sli4_cq_get(struct lpfc_queue *q)
+ 
+ 	cqe = q->qe[q->hba_index].cqe;
+ 	q->hba_index = idx;
++
++	/*
++	 * insert barrier for instruction interlock : data from the hardware
++	 * must have the valid bit checked before it can be copied and acted
++	 * upon. Speculative instructions were allowing a bcopy at the start
++	 * of lpfc_sli4_fp_handle_wcqe(), which is called immediately
++	 * after our return, to copy data before the valid bit check above
++	 * was done. As such, some of the copied data was stale. The barrier
++	 * ensures the check is before any data is copied.
++	 */
++	mb();
+ 	return cqe;
+ }
+ 
+diff --git a/fs/pipe.c b/fs/pipe.c
+index 0e0752ef2715..3e7ab278bb0c 100644
+--- a/fs/pipe.c
++++ b/fs/pipe.c
+@@ -117,25 +117,27 @@ void pipe_wait(struct pipe_inode_info *pipe)
+ }
+ 
+ static int
+-pipe_iov_copy_from_user(void *to, struct iovec *iov, unsigned long len,
+-			int atomic)
++pipe_iov_copy_from_user(void *addr, int *offset, struct iovec *iov,
++			size_t *remaining, int atomic)
+ {
+ 	unsigned long copy;
+ 
+-	while (len > 0) {
++	while (*remaining > 0) {
+ 		while (!iov->iov_len)
+ 			iov++;
+-		copy = min_t(unsigned long, len, iov->iov_len);
++		copy = min_t(unsigned long, *remaining, iov->iov_len);
+ 
+ 		if (atomic) {
+-			if (__copy_from_user_inatomic(to, iov->iov_base, copy))
++			if (__copy_from_user_inatomic(addr + *offset,
++						      iov->iov_base, copy))
+ 				return -EFAULT;
+ 		} else {
+-			if (copy_from_user(to, iov->iov_base, copy))
++			if (copy_from_user(addr + *offset,
++					   iov->iov_base, copy))
+ 				return -EFAULT;
+ 		}
+-		to += copy;
+-		len -= copy;
++		*offset += copy;
++		*remaining -= copy;
+ 		iov->iov_base += copy;
+ 		iov->iov_len -= copy;
+ 	}
+@@ -143,25 +145,27 @@ pipe_iov_copy_from_user(void *to, struct iovec *iov, unsigned long len,
+ }
+ 
+ static int
+-pipe_iov_copy_to_user(struct iovec *iov, const void *from, unsigned long len,
+-		      int atomic)
++pipe_iov_copy_to_user(struct iovec *iov, void *addr, int *offset,
++		      size_t *remaining, int atomic)
+ {
+ 	unsigned long copy;
+ 
+-	while (len > 0) {
++	while (*remaining > 0) {
+ 		while (!iov->iov_len)
+ 			iov++;
+-		copy = min_t(unsigned long, len, iov->iov_len);
++		copy = min_t(unsigned long, *remaining, iov->iov_len);
+ 
+ 		if (atomic) {
+-			if (__copy_to_user_inatomic(iov->iov_base, from, copy))
++			if (__copy_to_user_inatomic(iov->iov_base,
++						    addr + *offset, copy))
+ 				return -EFAULT;
+ 		} else {
+-			if (copy_to_user(iov->iov_base, from, copy))
++			if (copy_to_user(iov->iov_base,
++					 addr + *offset, copy))
+ 				return -EFAULT;
+ 		}
+-		from += copy;
+-		len -= copy;
++		*offset += copy;
++		*remaining -= copy;
+ 		iov->iov_base += copy;
+ 		iov->iov_len -= copy;
+ 	}
+@@ -395,7 +399,7 @@ pipe_read(struct kiocb *iocb, const struct iovec *_iov,
+ 			struct pipe_buffer *buf = pipe->bufs + curbuf;
+ 			const struct pipe_buf_operations *ops = buf->ops;
+ 			void *addr;
+-			size_t chars = buf->len;
++			size_t chars = buf->len, remaining;
+ 			int error, atomic;
+ 
+ 			if (chars > total_len)
+@@ -409,9 +413,11 @@ pipe_read(struct kiocb *iocb, const struct iovec *_iov,
+ 			}
+ 
+ 			atomic = !iov_fault_in_pages_write(iov, chars);
++			remaining = chars;
+ redo:
+ 			addr = ops->map(pipe, buf, atomic);
+-			error = pipe_iov_copy_to_user(iov, addr + buf->offset, chars, atomic);
++			error = pipe_iov_copy_to_user(iov, addr, &buf->offset,
++						      &remaining, atomic);
+ 			ops->unmap(pipe, buf, addr);
+ 			if (unlikely(error)) {
+ 				/*
+@@ -426,7 +432,6 @@ redo:
+ 				break;
+ 			}
+ 			ret += chars;
+-			buf->offset += chars;
+ 			buf->len -= chars;
+ 
+ 			/* Was it a packet buffer? Clean up and exit */
+@@ -531,6 +536,7 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov,
+ 		if (ops->can_merge && offset + chars <= PAGE_SIZE) {
+ 			int error, atomic = 1;
+ 			void *addr;
++			size_t remaining = chars;
+ 
+ 			error = ops->confirm(pipe, buf);
+ 			if (error)
+@@ -539,8 +545,8 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov,
+ 			iov_fault_in_pages_read(iov, chars);
+ redo1:
+ 			addr = ops->map(pipe, buf, atomic);
+-			error = pipe_iov_copy_from_user(offset + addr, iov,
+-							chars, atomic);
++			error = pipe_iov_copy_from_user(addr, &offset, iov,
++							&remaining, atomic);
+ 			ops->unmap(pipe, buf, addr);
+ 			ret = error;
+ 			do_wakeup = 1;
+@@ -575,6 +581,8 @@ redo1:
+ 			struct page *page = pipe->tmp_page;
+ 			char *src;
+ 			int error, atomic = 1;
++			int offset = 0;
++			size_t remaining;
+ 
+ 			if (!page) {
+ 				page = alloc_page(GFP_HIGHUSER);
+@@ -595,14 +603,15 @@ redo1:
+ 				chars = total_len;
+ 
+ 			iov_fault_in_pages_read(iov, chars);
++			remaining = chars;
+ redo2:
+ 			if (atomic)
+ 				src = kmap_atomic(page);
+ 			else
+ 				src = kmap(page);
+ 
+-			error = pipe_iov_copy_from_user(src, iov, chars,
+-							atomic);
++			error = pipe_iov_copy_from_user(src, &offset, iov,
++							&remaining, atomic);
+ 			if (atomic)
+ 				kunmap_atomic(src);
+ 			else
+diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
+index 0a1edc694d67..fe3e086d38e9 100644
+--- a/kernel/trace/trace_events_filter.c
++++ b/kernel/trace/trace_events_filter.c
+@@ -1328,19 +1328,24 @@ static int check_preds(struct filter_parse_state *ps)
+ {
+ 	int n_normal_preds = 0, n_logical_preds = 0;
+ 	struct postfix_elt *elt;
++	int cnt = 0;
+ 
+ 	list_for_each_entry(elt, &ps->postfix, list) {
+-		if (elt->op == OP_NONE)
++		if (elt->op == OP_NONE) {
++			cnt++;
+ 			continue;
++		}
+ 
++		cnt--;
+ 		if (elt->op == OP_AND || elt->op == OP_OR) {
+ 			n_logical_preds++;
+ 			continue;
+ 		}
+ 		n_normal_preds++;
++		WARN_ON_ONCE(cnt < 0);
+ 	}
+ 
+-	if (!n_normal_preds || n_logical_preds >= n_normal_preds) {
++	if (cnt != 1 || !n_normal_preds || n_logical_preds >= n_normal_preds) {
+ 		parse_error(ps, FILT_ERR_INVALID_FILTER, 0);
+ 		return -EINVAL;
+ 	}