From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Jeremy Kerr <jk@ozlabs.org>, Arnd Bergmann <arnd@arndb.de>,
Christoph Hellwig <hch@lst.de>, Al Viro <viro@zeniv.linux.org.uk>,
Sasha Levin <sashal@kernel.org>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 4.9 29/50] powerpc/spufs: fix copy_to_user while atomic
Date: Mon, 8 Jun 2020 19:26:19 -0400 [thread overview]
Message-ID: <20200608232640.3370262-29-sashal@kernel.org> (raw)
In-Reply-To: <20200608232640.3370262-1-sashal@kernel.org>
From: Jeremy Kerr <jk@ozlabs.org>
[ Upstream commit 88413a6bfbbe2f648df399b62f85c934460b7a4d ]
Currently, we may perform a copy_to_user (through
simple_read_from_buffer()) while holding a context's register_lock,
while accessing the context save area.
This change uses a temporary buffer for the context save area data,
which we then pass to simple_read_from_buffer.
Includes changes from Christoph Hellwig <hch@lst.de>.
Fixes: bf1ab978be23 ("[POWERPC] coredump: Add SPU elf notes to coredump.")
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
[hch: renamed to function to avoid ___-prefixes]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/platforms/cell/spufs/file.c | 113 +++++++++++++++--------
1 file changed, 75 insertions(+), 38 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 06254467e4dd..f12b00a056cb 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -2044,8 +2044,9 @@ static ssize_t __spufs_mbox_info_read(struct spu_context *ctx,
static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
- int ret;
struct spu_context *ctx = file->private_data;
+ u32 stat, data;
+ int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
return -EFAULT;
@@ -2054,11 +2055,16 @@ static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_mbox_info_read(ctx, buf, len, pos);
+ stat = ctx->csa.prob.mb_stat_R;
+ data = ctx->csa.prob.pu_mb_R;
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ /* EOF if there's no entry in the mbox */
+ if (!(stat & 0x0000ff))
+ return 0;
+
+ return simple_read_from_buffer(buf, len, pos, &data, sizeof(data));
}
static const struct file_operations spufs_mbox_info_fops = {
@@ -2085,6 +2091,7 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
+ u32 stat, data;
int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
@@ -2094,11 +2101,16 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_ibox_info_read(ctx, buf, len, pos);
+ stat = ctx->csa.prob.mb_stat_R;
+ data = ctx->csa.priv2.puint_mb_R;
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ /* EOF if there's no entry in the ibox */
+ if (!(stat & 0xff0000))
+ return 0;
+
+ return simple_read_from_buffer(buf, len, pos, &data, sizeof(data));
}
static const struct file_operations spufs_ibox_info_fops = {
@@ -2107,6 +2119,11 @@ static const struct file_operations spufs_ibox_info_fops = {
.llseek = generic_file_llseek,
};
+static size_t spufs_wbox_info_cnt(struct spu_context *ctx)
+{
+ return (4 - ((ctx->csa.prob.mb_stat_R & 0x00ff00) >> 8)) * sizeof(u32);
+}
+
static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
char __user *buf, size_t len, loff_t *pos)
{
@@ -2115,7 +2132,7 @@ static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
u32 wbox_stat;
wbox_stat = ctx->csa.prob.mb_stat_R;
- cnt = 4 - ((wbox_stat & 0x00ff00) >> 8);
+ cnt = spufs_wbox_info_cnt(ctx);
for (i = 0; i < cnt; i++) {
data[i] = ctx->csa.spu_mailbox_data[i];
}
@@ -2128,7 +2145,8 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
- int ret;
+ u32 data[ARRAY_SIZE(ctx->csa.spu_mailbox_data)];
+ int ret, count;
if (!access_ok(VERIFY_WRITE, buf, len))
return -EFAULT;
@@ -2137,11 +2155,13 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_wbox_info_read(ctx, buf, len, pos);
+ count = spufs_wbox_info_cnt(ctx);
+ memcpy(&data, &ctx->csa.spu_mailbox_data, sizeof(data));
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ return simple_read_from_buffer(buf, len, pos, &data,
+ count * sizeof(u32));
}
static const struct file_operations spufs_wbox_info_fops = {
@@ -2150,27 +2170,33 @@ static const struct file_operations spufs_wbox_info_fops = {
.llseek = generic_file_llseek,
};
-static ssize_t __spufs_dma_info_read(struct spu_context *ctx,
- char __user *buf, size_t len, loff_t *pos)
+static void spufs_get_dma_info(struct spu_context *ctx,
+ struct spu_dma_info *info)
{
- struct spu_dma_info info;
- struct mfc_cq_sr *qp, *spuqp;
int i;
- info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW;
- info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0];
- info.dma_info_status = ctx->csa.spu_chnldata_RW[24];
- info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25];
- info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27];
+ info->dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW;
+ info->dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0];
+ info->dma_info_status = ctx->csa.spu_chnldata_RW[24];
+ info->dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25];
+ info->dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27];
for (i = 0; i < 16; i++) {
- qp = &info.dma_info_command_data[i];
- spuqp = &ctx->csa.priv2.spuq[i];
+ struct mfc_cq_sr *qp = &info->dma_info_command_data[i];
+ struct mfc_cq_sr *spuqp = &ctx->csa.priv2.spuq[i];
qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW;
qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW;
qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW;
qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW;
}
+}
+
+static ssize_t __spufs_dma_info_read(struct spu_context *ctx,
+ char __user *buf, size_t len, loff_t *pos)
+{
+ struct spu_dma_info info;
+
+ spufs_get_dma_info(ctx, &info);
return simple_read_from_buffer(buf, len, pos, &info,
sizeof info);
@@ -2180,6 +2206,7 @@ static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
+ struct spu_dma_info info;
int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
@@ -2189,11 +2216,12 @@ static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_dma_info_read(ctx, buf, len, pos);
+ spufs_get_dma_info(ctx, &info);
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ return simple_read_from_buffer(buf, len, pos, &info,
+ sizeof(info));
}
static const struct file_operations spufs_dma_info_fops = {
@@ -2202,13 +2230,31 @@ static const struct file_operations spufs_dma_info_fops = {
.llseek = no_llseek,
};
+static void spufs_get_proxydma_info(struct spu_context *ctx,
+ struct spu_proxydma_info *info)
+{
+ int i;
+
+ info->proxydma_info_type = ctx->csa.prob.dma_querytype_RW;
+ info->proxydma_info_mask = ctx->csa.prob.dma_querymask_RW;
+ info->proxydma_info_status = ctx->csa.prob.dma_tagstatus_R;
+
+ for (i = 0; i < 8; i++) {
+ struct mfc_cq_sr *qp = &info->proxydma_info_command_data[i];
+ struct mfc_cq_sr *puqp = &ctx->csa.priv2.puq[i];
+
+ qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW;
+ qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW;
+ qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW;
+ qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW;
+ }
+}
+
static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx,
char __user *buf, size_t len, loff_t *pos)
{
struct spu_proxydma_info info;
- struct mfc_cq_sr *qp, *puqp;
int ret = sizeof info;
- int i;
if (len < ret)
return -EINVAL;
@@ -2216,18 +2262,7 @@ static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx,
if (!access_ok(VERIFY_WRITE, buf, len))
return -EFAULT;
- info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW;
- info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW;
- info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R;
- for (i = 0; i < 8; i++) {
- qp = &info.proxydma_info_command_data[i];
- puqp = &ctx->csa.priv2.puq[i];
-
- qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW;
- qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW;
- qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW;
- qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW;
- }
+ spufs_get_proxydma_info(ctx, &info);
return simple_read_from_buffer(buf, len, pos, &info,
sizeof info);
@@ -2237,17 +2272,19 @@ static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
+ struct spu_proxydma_info info;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_proxydma_info_read(ctx, buf, len, pos);
+ spufs_get_proxydma_info(ctx, &info);
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ return simple_read_from_buffer(buf, len, pos, &info,
+ sizeof(info));
}
static const struct file_operations spufs_proxydma_info_fops = {
--
2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Al Viro <viro@zeniv.linux.org.uk>,
linuxppc-dev@lists.ozlabs.org, Christoph Hellwig <hch@lst.de>,
Jeremy Kerr <jk@ozlabs.org>
Subject: [PATCH AUTOSEL 4.9 29/50] powerpc/spufs: fix copy_to_user while atomic
Date: Mon, 8 Jun 2020 19:26:19 -0400 [thread overview]
Message-ID: <20200608232640.3370262-29-sashal@kernel.org> (raw)
In-Reply-To: <20200608232640.3370262-1-sashal@kernel.org>
From: Jeremy Kerr <jk@ozlabs.org>
[ Upstream commit 88413a6bfbbe2f648df399b62f85c934460b7a4d ]
Currently, we may perform a copy_to_user (through
simple_read_from_buffer()) while holding a context's register_lock,
while accessing the context save area.
This change uses a temporary buffer for the context save area data,
which we then pass to simple_read_from_buffer.
Includes changes from Christoph Hellwig <hch@lst.de>.
Fixes: bf1ab978be23 ("[POWERPC] coredump: Add SPU elf notes to coredump.")
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
[hch: renamed to function to avoid ___-prefixes]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/platforms/cell/spufs/file.c | 113 +++++++++++++++--------
1 file changed, 75 insertions(+), 38 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 06254467e4dd..f12b00a056cb 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -2044,8 +2044,9 @@ static ssize_t __spufs_mbox_info_read(struct spu_context *ctx,
static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
- int ret;
struct spu_context *ctx = file->private_data;
+ u32 stat, data;
+ int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
return -EFAULT;
@@ -2054,11 +2055,16 @@ static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_mbox_info_read(ctx, buf, len, pos);
+ stat = ctx->csa.prob.mb_stat_R;
+ data = ctx->csa.prob.pu_mb_R;
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ /* EOF if there's no entry in the mbox */
+ if (!(stat & 0x0000ff))
+ return 0;
+
+ return simple_read_from_buffer(buf, len, pos, &data, sizeof(data));
}
static const struct file_operations spufs_mbox_info_fops = {
@@ -2085,6 +2091,7 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
+ u32 stat, data;
int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
@@ -2094,11 +2101,16 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_ibox_info_read(ctx, buf, len, pos);
+ stat = ctx->csa.prob.mb_stat_R;
+ data = ctx->csa.priv2.puint_mb_R;
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ /* EOF if there's no entry in the ibox */
+ if (!(stat & 0xff0000))
+ return 0;
+
+ return simple_read_from_buffer(buf, len, pos, &data, sizeof(data));
}
static const struct file_operations spufs_ibox_info_fops = {
@@ -2107,6 +2119,11 @@ static const struct file_operations spufs_ibox_info_fops = {
.llseek = generic_file_llseek,
};
+static size_t spufs_wbox_info_cnt(struct spu_context *ctx)
+{
+ return (4 - ((ctx->csa.prob.mb_stat_R & 0x00ff00) >> 8)) * sizeof(u32);
+}
+
static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
char __user *buf, size_t len, loff_t *pos)
{
@@ -2115,7 +2132,7 @@ static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
u32 wbox_stat;
wbox_stat = ctx->csa.prob.mb_stat_R;
- cnt = 4 - ((wbox_stat & 0x00ff00) >> 8);
+ cnt = spufs_wbox_info_cnt(ctx);
for (i = 0; i < cnt; i++) {
data[i] = ctx->csa.spu_mailbox_data[i];
}
@@ -2128,7 +2145,8 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
- int ret;
+ u32 data[ARRAY_SIZE(ctx->csa.spu_mailbox_data)];
+ int ret, count;
if (!access_ok(VERIFY_WRITE, buf, len))
return -EFAULT;
@@ -2137,11 +2155,13 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_wbox_info_read(ctx, buf, len, pos);
+ count = spufs_wbox_info_cnt(ctx);
+ memcpy(&data, &ctx->csa.spu_mailbox_data, sizeof(data));
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ return simple_read_from_buffer(buf, len, pos, &data,
+ count * sizeof(u32));
}
static const struct file_operations spufs_wbox_info_fops = {
@@ -2150,27 +2170,33 @@ static const struct file_operations spufs_wbox_info_fops = {
.llseek = generic_file_llseek,
};
-static ssize_t __spufs_dma_info_read(struct spu_context *ctx,
- char __user *buf, size_t len, loff_t *pos)
+static void spufs_get_dma_info(struct spu_context *ctx,
+ struct spu_dma_info *info)
{
- struct spu_dma_info info;
- struct mfc_cq_sr *qp, *spuqp;
int i;
- info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW;
- info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0];
- info.dma_info_status = ctx->csa.spu_chnldata_RW[24];
- info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25];
- info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27];
+ info->dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW;
+ info->dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0];
+ info->dma_info_status = ctx->csa.spu_chnldata_RW[24];
+ info->dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25];
+ info->dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27];
for (i = 0; i < 16; i++) {
- qp = &info.dma_info_command_data[i];
- spuqp = &ctx->csa.priv2.spuq[i];
+ struct mfc_cq_sr *qp = &info->dma_info_command_data[i];
+ struct mfc_cq_sr *spuqp = &ctx->csa.priv2.spuq[i];
qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW;
qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW;
qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW;
qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW;
}
+}
+
+static ssize_t __spufs_dma_info_read(struct spu_context *ctx,
+ char __user *buf, size_t len, loff_t *pos)
+{
+ struct spu_dma_info info;
+
+ spufs_get_dma_info(ctx, &info);
return simple_read_from_buffer(buf, len, pos, &info,
sizeof info);
@@ -2180,6 +2206,7 @@ static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
+ struct spu_dma_info info;
int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
@@ -2189,11 +2216,12 @@ static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_dma_info_read(ctx, buf, len, pos);
+ spufs_get_dma_info(ctx, &info);
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ return simple_read_from_buffer(buf, len, pos, &info,
+ sizeof(info));
}
static const struct file_operations spufs_dma_info_fops = {
@@ -2202,13 +2230,31 @@ static const struct file_operations spufs_dma_info_fops = {
.llseek = no_llseek,
};
+static void spufs_get_proxydma_info(struct spu_context *ctx,
+ struct spu_proxydma_info *info)
+{
+ int i;
+
+ info->proxydma_info_type = ctx->csa.prob.dma_querytype_RW;
+ info->proxydma_info_mask = ctx->csa.prob.dma_querymask_RW;
+ info->proxydma_info_status = ctx->csa.prob.dma_tagstatus_R;
+
+ for (i = 0; i < 8; i++) {
+ struct mfc_cq_sr *qp = &info->proxydma_info_command_data[i];
+ struct mfc_cq_sr *puqp = &ctx->csa.priv2.puq[i];
+
+ qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW;
+ qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW;
+ qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW;
+ qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW;
+ }
+}
+
static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx,
char __user *buf, size_t len, loff_t *pos)
{
struct spu_proxydma_info info;
- struct mfc_cq_sr *qp, *puqp;
int ret = sizeof info;
- int i;
if (len < ret)
return -EINVAL;
@@ -2216,18 +2262,7 @@ static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx,
if (!access_ok(VERIFY_WRITE, buf, len))
return -EFAULT;
- info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW;
- info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW;
- info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R;
- for (i = 0; i < 8; i++) {
- qp = &info.proxydma_info_command_data[i];
- puqp = &ctx->csa.priv2.puq[i];
-
- qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW;
- qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW;
- qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW;
- qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW;
- }
+ spufs_get_proxydma_info(ctx, &info);
return simple_read_from_buffer(buf, len, pos, &info,
sizeof info);
@@ -2237,17 +2272,19 @@ static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
+ struct spu_proxydma_info info;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
- ret = __spufs_proxydma_info_read(ctx, buf, len, pos);
+ spufs_get_proxydma_info(ctx, &info);
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
- return ret;
+ return simple_read_from_buffer(buf, len, pos, &info,
+ sizeof(info));
}
static const struct file_operations spufs_proxydma_info_fops = {
--
2.25.1
next prev parent reply other threads:[~2020-06-08 23:42 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 23:25 [PATCH AUTOSEL 4.9 01/50] ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 02/50] ath9k: Fix use-after-free Write in ath9k_htc_rx_msg Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 03/50] media: si2157: Better check for running tuner in init Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 04/50] objtool: Ignore empty alternatives Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 05/50] net: ena: fix error returning in ena_com_get_hash_function() Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 06/50] spi: dw: Zero DMA Tx and Rx configurations on stack Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 07/50] Bluetooth: Add SCO fallback for invalid LMP parameters error Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 08/50] kgdb: Prevent infinite recursive entries to the debugger Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 09/50] spi: dw: Enable interrupts in accordance with DMA xfer mode Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 10/50] clocksource: dw_apb_timer_of: Fix missing clockevent timers Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 11/50] btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 12/50] ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 13/50] x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 14/50] net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 15/50] staging: android: ion: use vmap instead of vm_map_ram Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 16/50] ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 17/50] ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 18/50] e1000: Distribute switch variables for initialization Sasha Levin
2020-06-08 23:26 ` [Intel-wired-lan] " Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 19/50] dt-bindings: display: mediatek: control dpi pins mode to avoid leakage Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 20/50] media: dvb: return -EREMOTEIO on i2c transfer failure Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 21/50] media: platform: fcp: Set appropriate DMA parameters Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 22/50] MIPS: Make sparse_init() using top-down allocation Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 23/50] netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 24/50] lib/mpi: Fix 64-bit MIPS build with Clang Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 25/50] perf: Add cond_resched() to task_function_call() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 26/50] exit: Move preemption fixup up, move blocking operations down Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 27/50] net: lpc-enet: fix error return code in lpc_mii_init() Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 28/50] net: allwinner: Fix use correct return type for ndo_start_xmit() Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` Sasha Levin [this message]
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 29/50] powerpc/spufs: fix copy_to_user while atomic Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 30/50] ath9k_htc: Silence undersized packet warnings Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 31/50] MIPS: Truncate link address into 32bit for 32bit kernel Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 32/50] mips: cm: Fix an invalid error code of INTVN_*_ERR Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 33/50] kgdb: Fix spurious true from in_dbg_master() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 34/50] md: don't flush workqueue unconditionally in md_open Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 35/50] rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 36/50] mwifiex: Fix memory corruption in dump_station Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 37/50] x86/boot: Correct relocation destination on old linkers Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 38/50] mips: Add udelay lpj numbers adjustment Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 39/50] x86/mm: Stop printing BRK addresses Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 40/50] m68k: mac: Don't call via_flush_cache() on Mac IIfx Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 41/50] macvlan: Skip loopback packets in RX handler Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 42/50] PCI: Don't disable decoding when mmio_always_on is set Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 43/50] MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 44/50] xfs: gut error handling in xfs_trans_unreserve_and_mod_sb() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 45/50] staging: greybus: sdio: Respect the cmd->busy_timeout from the mmc core Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 46/50] ixgbe: fix signed-integer-overflow warning Sasha Levin
2020-06-08 23:26 ` [Intel-wired-lan] " Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 47/50] mmc: sdhci-esdhc-imx: fix the mask for tuning start point Sasha Levin
2020-06-08 23:26 ` Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 48/50] spi: dw: Return any value retrieved from the dma_transfer callback Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 49/50] cpuidle: Fix three reference count leaks Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 50/50] vxlan: Avoid infinite loop when suppressing NS messages with invalid options Sasha Levin
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