On 02/16/2018 02:59 PM, H. Peter Anvin wrote:
> On 02/16/18 12:33, Taras Kondratiuk wrote:
>> Many of the Linux security/integrity features are dependent on file
>> metadata, stored as extended attributes (xattrs), for making decisions.
>> These features need to be initialized during initcall and
On 02/16/2018 06:00 PM, h...@zytor.com wrote:
> Introducing new, incompatible data formats is an inherently *very*
> costly operation; unfortunately many engineers don't seem to have a good grip
> of just *how* expensive it is (see "silly embedded nonsense hacks", "too
> little, too soon".)
So you
I just added a ppc64 target to https://github.com/landley/mkroot which
means I built 4.14 with the attached miniconfig and ran it with the
attached qemu command line, and it works fine as is but if you remove
the transactional mem line from the config the kernel panics instead
of launching a shell
On 09/11/2017 10:15 AM, Oleg Nesterov wrote:
> On 09/08, Rob Landley wrote:
>>
>> So is exec(NULL, argv, envp) a reasonable thing to want?
>
> I think that something like prctl(PR_OPEN_EXE_FILE) which does
>
> dentry_open(current->mm->exe_file->path, O
On 09/12/2017 06:30 AM, Geert Uytterhoeven wrote:
> Hi Rob,
>
> On Tue, Sep 12, 2017 at 12:48 PM, Rob Landley wrote:
>> Your stack has pointers. Your heap has pointers. Your data and bss (once
>> initialized) can have pointers. These pointers can be in the middle of
>>
On 09/11/2017 06:45 AM, Petr Mladek wrote:
>> Except for the second printk line: If you boot with rdinit=/bin/hush
>> then the first time you mount -t devtmpfs /dev /dev after boot (with
>> CONFIG_DEVTMPFS_MOUNT already having mounted it), you get the 0 return
>> value but the last printk() doesn't
From: Rob Landley
Make initramfs honor CONFIG_DEVTMPFS_MOUNT, and move
/dev/console open after devtmpfs mount.
Add workaround for Debian bug that was copied by Ubuntu.
Signed-off-by: Rob Landley
---
v2 discussion: http://lkml.iu.edu/hypermail/linux/kernel/1705.2/05611.html
drivers/base
On 09/14/2017 04:17 AM, Christophe LEROY wrote:
> Le 14/09/2017 à 01:51, Rob Landley a écrit :
>> From: Rob Landley
>>
>> Make initramfs honor CONFIG_DEVTMPFS_MOUNT, and move
>> /dev/console open after devtmpfs mount.
>>
>> Add workaround for Debian bug th
On 09/05/2017 08:12 PM, Rob Landley wrote:
> On 09/05/2017 08:24 AM, Alan Cox wrote:
>>>> honoring the suid bit if people feel that way. I just wanna unblock
>>>> vfork() while still running this code.
>>
>> Would it make more sense to have a way to promote
Taking another stab at this old issue from last merge window...
> Rob Landley writes:
>> On 05/23/2017 03:01 AM, Yury Norov wrote:
>>> On Mon, May 22, 2017 at 09:07:54PM -0500, Rob Landley wrote:
>>>> Your userspace mounted a tmpfs over /dev when it couldn&#
On 09/05/2017 08:24 AM, Alan Cox wrote:
>>> anymore. But I'm already _running_ this program. If I could fork() I
>>> could already get a second copy of the sucker and call main() again
>>> myself if necessary, but I can't, so...
>
> You can - ptrace 8)
Oh I can call clone() with various flags and
On 05/16/2017 10:58 PM, Michael Ellerman wrote:
> Rob Landley writes:
>
>> diff --git a/init/main.c b/init/main.c
>> index f866510..9ec09ff 100644
>> --- a/init/main.c
>> +++ b/init/main.c
>> @@ -1055,8 +1049,17 @@ static noinline void __init kernel_init_f
From: Rob Landley
My cross-compile environment doesn't provide an unprefixed
readelf in the $PATH, which works fine on every target but x86,
where you get a bunch of "/bin/sh: 1: readelf: not found"
messages (but the result still works anyway).
Signed-off-by: Rob Landley
---
On 05/22/2017 07:05 AM, Yury Norov wrote:
> Hi Rob,
>
> I found that next-20170522 fails to boot on arm64 machine with the
> following log:
I don't know anything about your kernel config (is CONFIG_DEVTMPFS_MOUNT
enabled or disabled?) or what userspace you're booting with, but it
seems I can gue
On 05/23/2017 03:01 AM, Yury Norov wrote:
> On Mon, May 22, 2017 at 09:07:54PM -0500, Rob Landley wrote:
>> Your userspace mounted a tmpfs over /dev when it couldn't mount a second
>> identical instance of devtmpfs over itself. If you had a static /dev in
>> initramfs
From: Rob Landley
Make initramfs honor CONFIG_DEVTMPFS_MOUNT, and move
/dev/console open after devtmpfs mount.
Signed-off-by: Rob Landley
---
init/main.c | 15 +--
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/init/main.c b/init/main.c
index 2858be7..71ed0d7
From: Rob Landley
Teach INITRAMFS_ROOT_UID and INITRAMFS_ROOT_GID that -1 means "current user".
Signed-off-by: Rob Landley
---
scripts/gen_initramfs_list.sh |2 ++
usr/Kconfig | 12
2 files changed, 6 insertions(+), 8 deletions(-)
diff --git
From: Rob Landley
Clarify help text that compression applies to ramfs as well as legacy ramdisk.
Signed-off-by: Rob Landley
---
usr/Kconfig | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/usr/Kconfig b/usr/Kconfig
index 572dcf7..d6f4633 100644
--- a/usr
On 09/17/2017 08:51 AM, Henrique de Moraes Holschuh wrote:
> On Sat, 16 Sep 2017, Rob Landley wrote:
>> So, I added a workaround with a printk in hopes of embarassing them into
>> someday fixing it.
>
> Oh, it will be fixed in Debian alright.
Cool!
But part of the problem
On 08/08/2017 07:04 AM, Willy Tarreau wrote:
> Hi Thomas,
>
> On Tue, Aug 08, 2017 at 01:46:25PM +0200, Thomas Meyer wrote:
>> Hi,
>>
>> did the commit 6e19eded3684dc184181093af3bff2ff440f5b53 break a linux kernel
>> build with an included ramdisk?
>>
>> As fas as I understand you must expliclity
On 11/17/2017 04:37 AM, John Paul Adrian Glaubitz wrote:
> Hi there!
>
> On 07/03/2016 06:46 PM, Yoshinori Sato wrote:
>> SH get devicetree support. But it not working on existing H/W.
>>
>> IO-DATA HDL-U (aka landisk) currentry supported.
>> This H/W like SH7751 evalution board. It's a best to us
On 09/18/2016 10:17 AM, Rich Felker wrote:
> On Sat, Sep 17, 2016 at 11:40:28PM -0500, Rob Landley wrote:
>>
>>
>> On 09/16/2016 09:23 PM, Guenter Roeck wrote:
>>> On 09/16/2016 04:32 PM, Rich Felker wrote:
>>>>> 4.6.3 from kernel.org.
>>>&g
On 08/16/2016 10:41 AM, Jason Cooper wrote:
> When targeting the j2, we need to retain '-m2'. Previously, the
> Makefile blew out -m2 on the next line via :=.
>
> Fix this by s/:=/+=/ when building for the J2.
>
> Fixes: 5a846abad07f6 ("sh: add support for J-Core J2 processor")
> Signed-off-by: J
On 09/16/2016 09:23 PM, Guenter Roeck wrote:
> On 09/16/2016 04:32 PM, Rich Felker wrote:
>>> 4.6.3 from kernel.org.
>>
>> That is utterly ancient and probaby very buggy. I would recommend 5.x+
>> or at the very least 4.7 or 4.8.
>>
> Unfortunately that is the latest one available from kernel.org
Commit-ID: 3780578761921f094179c6289072a74b2228c602
Gitweb: http://git.kernel.org/tip/3780578761921f094179c6289072a74b2228c602
Author: Rob Landley
AuthorDate: Sat, 20 May 2017 15:03:29 -0500
Committer: Thomas Gleixner
CommitDate: Sun, 21 May 2017 13:04:27 +0200
x86/boot: Use
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