* [PATCH] blkmapd: Fix infinite loop when reading serial
@ 2015-05-28 4:04 Kinglong Mee
2015-06-26 23:12 ` Kinglong Mee
2015-06-30 18:18 ` Steve Dickson
0 siblings, 2 replies; 3+ messages in thread
From: Kinglong Mee @ 2015-05-28 4:04 UTC (permalink / raw)
To: Steve Dickson; +Cc: linux-nfs@vger.kernel.org, Christoph Hellwig, kinglongmee
If (dev_id->ids & 0xf) < current_id, must updates pos when continue.
Otherwise an infinite loop.
No other places use the pos value, just move to the top of while.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
---
utils/blkmapd/device-inq.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/utils/blkmapd/device-inq.c b/utils/blkmapd/device-inq.c
index c5bf71f..6b56b67 100644
--- a/utils/blkmapd/device-inq.c
+++ b/utils/blkmapd/device-inq.c
@@ -196,6 +196,8 @@ struct bl_serial *bldev_read_serial(int fd, const char *filename)
while (pos < (len - devid_len)) {
dev_id = (struct bl_dev_id *)&(dev_root->data[pos]);
+ pos += (dev_id->len + devid_len);
+
if ((dev_id->ids & 0xf) < current_id)
continue;
switch (dev_id->ids & 0xf) {
@@ -226,7 +228,6 @@ struct bl_serial *bldev_read_serial(int fd, const char *filename)
}
if (current_id == 3)
break;
- pos += (dev_id->len + devid_len);
}
out:
if (!serial_out)
--
2.4.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] blkmapd: Fix infinite loop when reading serial
2015-05-28 4:04 [PATCH] blkmapd: Fix infinite loop when reading serial Kinglong Mee
@ 2015-06-26 23:12 ` Kinglong Mee
2015-06-30 18:18 ` Steve Dickson
1 sibling, 0 replies; 3+ messages in thread
From: Kinglong Mee @ 2015-06-26 23:12 UTC (permalink / raw)
To: Steve Dickson; +Cc: linux-nfs@vger.kernel.org, Christoph Hellwig
ping...
On 5/28/2015 12:04 PM, Kinglong Mee wrote:
> If (dev_id->ids & 0xf) < current_id, must updates pos when continue.
> Otherwise an infinite loop.
>
> No other places use the pos value, just move to the top of while.
>
> Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
> ---
> utils/blkmapd/device-inq.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/utils/blkmapd/device-inq.c b/utils/blkmapd/device-inq.c
> index c5bf71f..6b56b67 100644
> --- a/utils/blkmapd/device-inq.c
> +++ b/utils/blkmapd/device-inq.c
> @@ -196,6 +196,8 @@ struct bl_serial *bldev_read_serial(int fd, const char *filename)
>
> while (pos < (len - devid_len)) {
> dev_id = (struct bl_dev_id *)&(dev_root->data[pos]);
> + pos += (dev_id->len + devid_len);
> +
> if ((dev_id->ids & 0xf) < current_id)
> continue;
> switch (dev_id->ids & 0xf) {
> @@ -226,7 +228,6 @@ struct bl_serial *bldev_read_serial(int fd, const char *filename)
> }
> if (current_id == 3)
> break;
> - pos += (dev_id->len + devid_len);
> }
> out:
> if (!serial_out)
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] blkmapd: Fix infinite loop when reading serial
2015-05-28 4:04 [PATCH] blkmapd: Fix infinite loop when reading serial Kinglong Mee
2015-06-26 23:12 ` Kinglong Mee
@ 2015-06-30 18:18 ` Steve Dickson
1 sibling, 0 replies; 3+ messages in thread
From: Steve Dickson @ 2015-06-30 18:18 UTC (permalink / raw)
To: Kinglong Mee; +Cc: linux-nfs@vger.kernel.org, Christoph Hellwig
On 05/28/2015 12:04 AM, Kinglong Mee wrote:
> If (dev_id->ids & 0xf) < current_id, must updates pos when continue.
> Otherwise an infinite loop.
>
> No other places use the pos value, just move to the top of while.
>
> Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Sorry for the delay.... Committed!
steved.
> ---
> utils/blkmapd/device-inq.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/utils/blkmapd/device-inq.c b/utils/blkmapd/device-inq.c
> index c5bf71f..6b56b67 100644
> --- a/utils/blkmapd/device-inq.c
> +++ b/utils/blkmapd/device-inq.c
> @@ -196,6 +196,8 @@ struct bl_serial *bldev_read_serial(int fd, const char *filename)
>
> while (pos < (len - devid_len)) {
> dev_id = (struct bl_dev_id *)&(dev_root->data[pos]);
> + pos += (dev_id->len + devid_len);
> +
> if ((dev_id->ids & 0xf) < current_id)
> continue;
> switch (dev_id->ids & 0xf) {
> @@ -226,7 +228,6 @@ struct bl_serial *bldev_read_serial(int fd, const char *filename)
> }
> if (current_id == 3)
> break;
> - pos += (dev_id->len + devid_len);
> }
> out:
> if (!serial_out)
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-06-30 18:18 UTC | newest]
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2015-05-28 4:04 [PATCH] blkmapd: Fix infinite loop when reading serial Kinglong Mee
2015-06-26 23:12 ` Kinglong Mee
2015-06-30 18:18 ` Steve Dickson
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