Re: [Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

2018-04-06 Thread Paolo Bonzini 
On 06/04/2018 17:06, Eric Blake wrote:
> On 04/03/2018 01:46 PM, Eric Blake wrote:
>> On 03/27/2018 03:21 PM, Eric Blake wrote:
>>> gcc 8 on rawhide is picky enough to complain:
>>>
>>> /home/dummy/qemu/dump.c: In function 'create_header32':
>>> /home/dummy/qemu/dump.c:817:5: error: 'strncpy' output truncated before 
>>> terminating nul copying 8 bytes from a string of the same length 
>>> [-Werror=stringop-truncation]
>>>  strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
>>>  ^~~~
>>>
>>> But we already have SIG_LEN defined as the right length without needing
>>> to do a strlen(), and memcpy() is better than strncpy() when we know
>>> we do not want a trailing NUL byte.
>>>
>>> Signed-off-by: Eric Blake 
>>> ---
>>>  dump.c | 4 ++--
>>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> I'll include this in my qapi+misc pull request for 2.12-rc2
> 
> That pull request was abandoned; Paolo, do you want to pick this up in
> your misc tree?
> 

Ok.

Paolo

Re: [Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

2018-04-06 Thread Eric Blake 
On 04/03/2018 01:46 PM, Eric Blake wrote:
> On 03/27/2018 03:21 PM, Eric Blake wrote:
>> gcc 8 on rawhide is picky enough to complain:
>>
>> /home/dummy/qemu/dump.c: In function 'create_header32':
>> /home/dummy/qemu/dump.c:817:5: error: 'strncpy' output truncated before 
>> terminating nul copying 8 bytes from a string of the same length 
>> [-Werror=stringop-truncation]
>>  strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
>>  ^~~~
>>
>> But we already have SIG_LEN defined as the right length without needing
>> to do a strlen(), and memcpy() is better than strncpy() when we know
>> we do not want a trailing NUL byte.
>>
>> Signed-off-by: Eric Blake 
>> ---
>>  dump.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> I'll include this in my qapi+misc pull request for 2.12-rc2

That pull request was abandoned; Paolo, do you want to pick this up in
your misc tree?

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.   +1-919-301-3266
Virtualization:  qemu.org | libvirt.org



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Re: [Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

2018-04-03 Thread Eric Blake 
On 03/27/2018 03:21 PM, Eric Blake wrote:
> gcc 8 on rawhide is picky enough to complain:
> 
> /home/dummy/qemu/dump.c: In function 'create_header32':
> /home/dummy/qemu/dump.c:817:5: error: 'strncpy' output truncated before 
> terminating nul copying 8 bytes from a string of the same length 
> [-Werror=stringop-truncation]
>  strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
>  ^~~~
> 
> But we already have SIG_LEN defined as the right length without needing
> to do a strlen(), and memcpy() is better than strncpy() when we know
> we do not want a trailing NUL byte.
> 
> Signed-off-by: Eric Blake 
> ---
>  dump.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

I'll include this in my qapi+misc pull request for 2.12-rc2

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.   +1-919-301-3266
Virtualization:  qemu.org | libvirt.org



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Re: [Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

2018-03-31 Thread no-reply 
Hi,

This series failed docker-build@min-glib build test. Please find the testing 
commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

Type: series
Message-id: 20180327202152.1799131-1-ebl...@redhat.com
Subject: [Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

=== TEST SCRIPT BEGIN ===
#!/bin/bash
set -e
git submodule update --init dtc
# Let docker tests dump environment info
export SHOW_ENV=1
export J=8
time make docker-test-build@min-glib
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
Switched to a new branch 'test'
cc8ef6a6be dump: Fix build with newer gcc

=== OUTPUT BEGIN ===
Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc'
Cloning into '/var/tmp/patchew-tester-tmp-vs3sdjpj/src/dtc'...
Submodule path 'dtc': checked out 'e54388015af1fb4bf04d0bca99caba1074d9cc42'
  BUILD   min-glib
make[1]: Entering directory '/var/tmp/patchew-tester-tmp-vs3sdjpj/src'
  GEN 
/var/tmp/patchew-tester-tmp-vs3sdjpj/src/docker-src.2018-03-31-02.48.49.8700/qemu.tar
Cloning into 
'/var/tmp/patchew-tester-tmp-vs3sdjpj/src/docker-src.2018-03-31-02.48.49.8700/qemu.tar.vroot'...
done.
Checking out files:  38% (2340/6066)   
Checking out files:  39% (2366/6066)   
Checking out files:  40% (2427/6066)   
Checking out files:  41% (2488/6066)   
Checking out files:  42% (2548/6066)   
Checking out files:  43% (2609/6066)   
Checking out files:  44% (2670/6066)   
Checking out files:  45% (2730/6066)   
Checking out files:  46% (2791/6066)   
Checking out files:  47% (2852/6066)   
Checking out files:  48% (2912/6066)   
Checking out files:  49% (2973/6066)   
Checking out files:  50% (3033/6066)   
Checking out files:  51% (3094/6066)   
Checking out files:  52% (3155/6066)   
Checking out files:  52% (3178/6066)   
Checking out files:  53% (3215/6066)   
Checking out files:  54% (3276/6066)   
Checking out files:  55% (3337/6066)   
Checking out files:  56% (3397/6066)   
Checking out files:  57% (3458/6066)   
Checking out files:  58% (3519/6066)   
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Checking out files:  59% (3579/6066)   
Checking out files:  60% (3640/6066)   
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Checking out files:  68% (4125/6066)   
Checking out files:  69% (4186/6066)   
Checking out files:  70% (4247/6066)   
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Checking out files:  97% (5885/6066)   
Checking out files:  98% (5945/6066)   
Checking out files:  99% (6006/6066)   
Checking out files: 100% (6066/6066)   
Checking out files: 100% (6066/6066), done.
Your branch is up-to-date with 'origin/test'.
Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc'
Cloning into 
'/var/tmp/patchew-tester-tmp-vs3sdjpj/src/docker-src.2018-03-31-02.48.49.8700/qemu.tar.vroot/dtc'...
Submodule path 'dtc': checked out 'e54388015af1fb4bf04d0bca99caba1074d9cc42'
Submodule 'ui/keycodemapdb' (git://git.qemu.org/keycodemapdb.git) registered 
for path 'ui/keycodemapdb'
Cloning into 
'/var/tmp/patchew-tester-tmp-vs3sdjpj/src/docker-src.2018-03-31-02.48.49.8700/qemu.tar.vroot/ui/keycodemapdb'...
Submodule path 'ui/keycodemapdb': checked out 
'6b3d716e2b6472eb7189d3220552280ef3d832ce'
tar: 
/var/tmp/patchew-tester-tmp-vs3sdjpj/src/docker-src.2018-03-31-02.48.49.8700/qemu.tar:
 Wrote only 2048 of 10240 bytes
tar: Error is not recoverable: exiting now
failed to create tar file
  COPYRUNNER
RUN test-build in qemu:min-glib 
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
/var/tmp/qemu/run: line 32: prep_fail: command not found
Environment variables:
HOSTNAME=1014623e0fbf
MAKEFLAGS= -j8
J=8
CCACHE_DIR=/var/tmp/ccache

Re: [Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

2018-03-27 Thread Marc-André Lureau 
On Tue, Mar 27, 2018 at 10:21 PM, Eric Blake  wrote:
> gcc 8 on rawhide is picky enough to complain:
>
> /home/dummy/qemu/dump.c: In function 'create_header32':
> /home/dummy/qemu/dump.c:817:5: error: 'strncpy' output truncated before 
> terminating nul copying 8 bytes from a string of the same length 
> [-Werror=stringop-truncation]
>  strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
>  ^~~~
>
> But we already have SIG_LEN defined as the right length without needing
> to do a strlen(), and memcpy() is better than strncpy() when we know
> we do not want a trailing NUL byte.
>
> Signed-off-by: Eric Blake 

Reviewed-by: Marc-André Lureau 


> ---
>  dump.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/dump.c b/dump.c
> index 669f715274d..b54cd42b217 100644
> --- a/dump.c
> +++ b/dump.c
> @@ -814,7 +814,7 @@ static void create_header32(DumpState *s, Error **errp)
>  size = sizeof(DiskDumpHeader32);
>  dh = g_malloc0(size);
>
> -strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
> +memcpy(dh->signature, KDUMP_SIGNATURE, SIG_LEN);
>  dh->header_version = cpu_to_dump32(s, 6);
>  block_size = s->dump_info.page_size;
>  dh->block_size = cpu_to_dump32(s, block_size);
> @@ -926,7 +926,7 @@ static void create_header64(DumpState *s, Error **errp)
>  size = sizeof(DiskDumpHeader64);
>  dh = g_malloc0(size);
>
> -strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
> +memcpy(dh->signature, KDUMP_SIGNATURE, SIG_LEN);
>  dh->header_version = cpu_to_dump32(s, 6);
>  block_size = s->dump_info.page_size;
>  dh->block_size = cpu_to_dump32(s, block_size);
> --
> 2.14.3
>

Re: [Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

2018-03-27 Thread Philippe Mathieu-Daudé 
On 03/27/2018 05:21 PM, Eric Blake wrote:
> gcc 8 on rawhide is picky enough to complain:
> 
> /home/dummy/qemu/dump.c: In function 'create_header32':
> /home/dummy/qemu/dump.c:817:5: error: 'strncpy' output truncated before 
> terminating nul copying 8 bytes from a string of the same length 
> [-Werror=stringop-truncation]
>  strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
>  ^~~~
> 
> But we already have SIG_LEN defined as the right length without needing
> to do a strlen(), and memcpy() is better than strncpy() when we know
> we do not want a trailing NUL byte.
> 
> Signed-off-by: Eric Blake 

Reviewed-by: Philippe Mathieu-Daudé 

> ---
>  dump.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/dump.c b/dump.c
> index 669f715274d..b54cd42b217 100644
> --- a/dump.c
> +++ b/dump.c
> @@ -814,7 +814,7 @@ static void create_header32(DumpState *s, Error **errp)
>  size = sizeof(DiskDumpHeader32);
>  dh = g_malloc0(size);
> 
> -strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
> +memcpy(dh->signature, KDUMP_SIGNATURE, SIG_LEN);
>  dh->header_version = cpu_to_dump32(s, 6);
>  block_size = s->dump_info.page_size;
>  dh->block_size = cpu_to_dump32(s, block_size);
> @@ -926,7 +926,7 @@ static void create_header64(DumpState *s, Error **errp)
>  size = sizeof(DiskDumpHeader64);
>  dh = g_malloc0(size);
> 
> -strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
> +memcpy(dh->signature, KDUMP_SIGNATURE, SIG_LEN);
>  dh->header_version = cpu_to_dump32(s, 6);
>  block_size = s->dump_info.page_size;
>  dh->block_size = cpu_to_dump32(s, block_size);
>

[Qemu-devel] [PATCH for-2.12] dump: Fix build with newer gcc

2018-03-27 Thread Eric Blake 
gcc 8 on rawhide is picky enough to complain:

/home/dummy/qemu/dump.c: In function 'create_header32':
/home/dummy/qemu/dump.c:817:5: error: 'strncpy' output truncated before 
terminating nul copying 8 bytes from a string of the same length 
[-Werror=stringop-truncation]
 strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
 ^~~~

But we already have SIG_LEN defined as the right length without needing
to do a strlen(), and memcpy() is better than strncpy() when we know
we do not want a trailing NUL byte.

Signed-off-by: Eric Blake 
---
 dump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dump.c b/dump.c
index 669f715274d..b54cd42b217 100644
--- a/dump.c
+++ b/dump.c
@@ -814,7 +814,7 @@ static void create_header32(DumpState *s, Error **errp)
 size = sizeof(DiskDumpHeader32);
 dh = g_malloc0(size);

-strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
+memcpy(dh->signature, KDUMP_SIGNATURE, SIG_LEN);
 dh->header_version = cpu_to_dump32(s, 6);
 block_size = s->dump_info.page_size;
 dh->block_size = cpu_to_dump32(s, block_size);
@@ -926,7 +926,7 @@ static void create_header64(DumpState *s, Error **errp)
 size = sizeof(DiskDumpHeader64);
 dh = g_malloc0(size);

-strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
+memcpy(dh->signature, KDUMP_SIGNATURE, SIG_LEN);
 dh->header_version = cpu_to_dump32(s, 6);
 block_size = s->dump_info.page_size;
 dh->block_size = cpu_to_dump32(s, block_size);
-- 
2.14.3