* [PATCH] kexec/x86: fix crashkernel reserved mem detection
@ 2014-12-25 13:38 Yuri Volchkov
2015-01-09 6:27 ` Tony Jones
2015-01-14 6:24 ` Baoquan He
0 siblings, 2 replies; 5+ messages in thread
From: Yuri Volchkov @ 2014-12-25 13:38 UTC (permalink / raw)
To: horms, kexec; +Cc: wolchkov.yuri
Function crashkernel_mem_callback had wrong parameters type
So crash_reserved_mem got completely insane values
As a result kexec was unable to allocate segments for crashkernel
For instance, I got this message:
"Could not find a free area of memory of 0x9f000 bytes..."
Signed-off-by: Yuri Volchkov <wolchkov.yuri@gmail.com>
---
kexec/arch/i386/crashdump-x86.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
index 77bdad5..82bf239 100644
--- a/kexec/arch/i386/crashdump-x86.c
+++ b/kexec/arch/i386/crashdump-x86.c
@@ -1041,8 +1041,8 @@ int get_max_crash_kernel_limit(uint64_t *start, uint64_t *end)
static int crashkernel_mem_callback(void *UNUSED(data), int nr,
char *UNUSED(str),
- unsigned long base,
- unsigned long length)
+ unsigned long long base,
+ unsigned long long length)
{
if (nr >= CRASH_RESERVED_MEM_NR)
return 1;
--
2.2.1
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^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] kexec/x86: fix crashkernel reserved mem detection
2014-12-25 13:38 [PATCH] kexec/x86: fix crashkernel reserved mem detection Yuri Volchkov
@ 2015-01-09 6:27 ` Tony Jones
2015-01-09 8:59 ` Baoquan He
2015-01-14 6:24 ` Baoquan He
1 sibling, 1 reply; 5+ messages in thread
From: Tony Jones @ 2015-01-09 6:27 UTC (permalink / raw)
To: kexec; +Cc: horms, wolchkov.yuri
On 12/25/2014 05:38 AM, Yuri Volchkov wrote:
> Function crashkernel_mem_callback had wrong parameters type
> So crash_reserved_mem got completely insane values
> As a result kexec was unable to allocate segments for crashkernel
> For instance, I got this message:
> "Could not find a free area of memory of 0x9f000 bytes..."
>
> Signed-off-by: Yuri Volchkov <wolchkov.yuri@gmail.com>
See the patch attached to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=771671
which also fixes kexec/arch/sh/crashdump-sh.c and kexec/arch/sh/kexec-sh.c
Definitely a problem. Without the x86 fix we seem same failure on i586
tony
> ---
> kexec/arch/i386/crashdump-x86.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
> index 77bdad5..82bf239 100644
> --- a/kexec/arch/i386/crashdump-x86.c
> +++ b/kexec/arch/i386/crashdump-x86.c
> @@ -1041,8 +1041,8 @@ int get_max_crash_kernel_limit(uint64_t *start, uint64_t *end)
>
> static int crashkernel_mem_callback(void *UNUSED(data), int nr,
> char *UNUSED(str),
> - unsigned long base,
> - unsigned long length)
> + unsigned long long base,
> + unsigned long long length)
> {
> if (nr >= CRASH_RESERVED_MEM_NR)
> return 1;
>
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^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] kexec/x86: fix crashkernel reserved mem detection
2015-01-09 6:27 ` Tony Jones
@ 2015-01-09 8:59 ` Baoquan He
2015-01-14 5:31 ` Baoquan He
0 siblings, 1 reply; 5+ messages in thread
From: Baoquan He @ 2015-01-09 8:59 UTC (permalink / raw)
To: Tony Jones; +Cc: wolchkov.yuri, horms, kexec
On 01/08/15 at 10:27pm, Tony Jones wrote:
> On 12/25/2014 05:38 AM, Yuri Volchkov wrote:
> > Function crashkernel_mem_callback had wrong parameters type
> > So crash_reserved_mem got completely insane values
> > As a result kexec was unable to allocate segments for crashkernel
> > For instance, I got this message:
> > "Could not find a free area of memory of 0x9f000 bytes..."
> >
> > Signed-off-by: Yuri Volchkov <wolchkov.yuri@gmail.com>
>
> See the patch attached to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=771671
> which also fixes kexec/arch/sh/crashdump-sh.c and kexec/arch/sh/kexec-sh.c
>
> Definitely a problem. Without the x86 fix we seem same failure on i586
Hi Tony,
commit 4362bfa make that change, but skip the crashkernel_mem_callback.
It need be fixed.
I am wondering how the insane values happened on i386, and it didn't
happen on x86_64.
Thanks
Baoquan
>
> tony
>
> > ---
> > kexec/arch/i386/crashdump-x86.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
> > index 77bdad5..82bf239 100644
> > --- a/kexec/arch/i386/crashdump-x86.c
> > +++ b/kexec/arch/i386/crashdump-x86.c
> > @@ -1041,8 +1041,8 @@ int get_max_crash_kernel_limit(uint64_t *start, uint64_t *end)
> >
> > static int crashkernel_mem_callback(void *UNUSED(data), int nr,
> > char *UNUSED(str),
> > - unsigned long base,
> > - unsigned long length)
> > + unsigned long long base,
> > + unsigned long long length)
> > {
> > if (nr >= CRASH_RESERVED_MEM_NR)
> > return 1;
> >
>
>
> _______________________________________________
> kexec mailing list
> kexec@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kexec
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^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] kexec/x86: fix crashkernel reserved mem detection
2015-01-09 8:59 ` Baoquan He
@ 2015-01-14 5:31 ` Baoquan He
0 siblings, 0 replies; 5+ messages in thread
From: Baoquan He @ 2015-01-14 5:31 UTC (permalink / raw)
To: Tony Jones; +Cc: kexec, horms, wolchkov.yuri
On 01/09/15 at 04:59pm, Baoquan He wrote:
> On 01/08/15 at 10:27pm, Tony Jones wrote:
> > On 12/25/2014 05:38 AM, Yuri Volchkov wrote:
> > > Function crashkernel_mem_callback had wrong parameters type
> > > So crash_reserved_mem got completely insane values
> > > As a result kexec was unable to allocate segments for crashkernel
> > > For instance, I got this message:
> > > "Could not find a free area of memory of 0x9f000 bytes..."
> > >
> > > Signed-off-by: Yuri Volchkov <wolchkov.yuri@gmail.com>
> >
> > See the patch attached to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=771671
> > which also fixes kexec/arch/sh/crashdump-sh.c and kexec/arch/sh/kexec-sh.c
> >
> > Definitely a problem. Without the x86 fix we seem same failure on i586
>
> Hi Tony,
>
> commit 4362bfa make that change, but skip the crashkernel_mem_callback.
> It need be fixed.
>
> I am wondering how the insane values happened on i386, and it didn't
> happen on x86_64.
Never mind, have got it.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] kexec/x86: fix crashkernel reserved mem detection
2014-12-25 13:38 [PATCH] kexec/x86: fix crashkernel reserved mem detection Yuri Volchkov
2015-01-09 6:27 ` Tony Jones
@ 2015-01-14 6:24 ` Baoquan He
1 sibling, 0 replies; 5+ messages in thread
From: Baoquan He @ 2015-01-14 6:24 UTC (permalink / raw)
To: Yuri Volchkov; +Cc: horms, kexec
On 12/25/14 at 10:38pm, Yuri Volchkov wrote:
> Function crashkernel_mem_callback had wrong parameters type
> So crash_reserved_mem got completely insane values
> As a result kexec was unable to allocate segments for crashkernel
> For instance, I got this message:
> "Could not find a free area of memory of 0x9f000 bytes..."
>
> Signed-off-by: Yuri Volchkov <wolchkov.yuri@gmail.com>
> ---
> kexec/arch/i386/crashdump-x86.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
> index 77bdad5..82bf239 100644
> --- a/kexec/arch/i386/crashdump-x86.c
> +++ b/kexec/arch/i386/crashdump-x86.c
> @@ -1041,8 +1041,8 @@ int get_max_crash_kernel_limit(uint64_t *start, uint64_t *end)
>
crash_sh_memory_range_callback in kexec/arch/sh/crashdump-sh.c also has
this problem, please consider it.
> static int crashkernel_mem_callback(void *UNUSED(data), int nr,
> char *UNUSED(str),
> - unsigned long base,
> - unsigned long length)
> + unsigned long long base,
> + unsigned long long length)
> {
> if (nr >= CRASH_RESERVED_MEM_NR)
> return 1;
> --
> 2.2.1
>
>
> _______________________________________________
> kexec mailing list
> kexec@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kexec
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^ permalink raw reply [flat|nested] 5+ messages in thread
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2014-12-25 13:38 [PATCH] kexec/x86: fix crashkernel reserved mem detection Yuri Volchkov
2015-01-09 6:27 ` Tony Jones
2015-01-09 8:59 ` Baoquan He
2015-01-14 5:31 ` Baoquan He
2015-01-14 6:24 ` Baoquan He
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