* ACPI related kernel panic when booting 2.6.29-rc2
@ 2009-01-17 20:47 Peter Klotz
2009-01-17 22:50 ` Alexey Starikovskiy
0 siblings, 1 reply; 3+ messages in thread
From: Peter Klotz @ 2009-01-17 20:47 UTC (permalink / raw
To: linux-acpi
On bootup of 2.6.29-rc2 a kernel panic in acpi_ns_get_parent_node occurs.
This is the backtrace (written down from the screen, maybe incomplete):
acpi_ev_execute_reg_methods
acpi_install_address_space_handler
acpi_ec_space_handler
acpi_init
ec_install_handlers
acpi_ec_ecdt_probe
acpi_init
fbmem_init
_stext
register_irq_proc
proc_pident_readdir
kernel_init
child_rip
kernel_init
child_rip
RIP [...] acpi_ns_get_parent_node
I can provide a screenshot (270kB) if this information is insufficient.
The system booted with 2.6.29-rc1 so a recent change must be the cause
of this panic.
The system is an Asus B50A laptop running an x86_64 kernel.
Maybe this problem is related to these messages I was seeing in bootups
of previous kernels:
[ 0.176398] ACPI Error (nsaccess-0434): ACPI path has too many parent
prefixes (^) - reached beyond root node [20080926]
Regards, Peter.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: ACPI related kernel panic when booting 2.6.29-rc2
2009-01-17 20:47 ACPI related kernel panic when booting 2.6.29-rc2 Peter Klotz
@ 2009-01-17 22:50 ` Alexey Starikovskiy
2009-01-18 8:57 ` Peter Klotz
0 siblings, 1 reply; 3+ messages in thread
From: Alexey Starikovskiy @ 2009-01-17 22:50 UTC (permalink / raw
To: Peter Klotz; +Cc: linux-acpi
please use the patch from Tero Roponen.
This patch fixes the crash I experienced in 2.6.29-rc2.
Tested on ASUS M50vm.
Signed-off-by: Tero Roponen <tero.roponen@gmail.com>
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index a2b82c9..5c2f5d3 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -982,7 +982,7 @@ int __init acpi_ec_ecdt_probe(void)
saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
if (!saved_ec)
return -ENOMEM;
- memcpy(&saved_ec, boot_ec, sizeof(saved_ec));
+ memcpy(saved_ec, boot_ec, sizeof(*saved_ec));
/* fall through */
}
/* This workaround is needed only on some broken machines,
sorry for screw up...
Alex
Peter Klotz wrote:
> On bootup of 2.6.29-rc2 a kernel panic in acpi_ns_get_parent_node occurs.
>
> This is the backtrace (written down from the screen, maybe incomplete):
>
> acpi_ev_execute_reg_methods
> acpi_install_address_space_handler
> acpi_ec_space_handler
> acpi_init
> ec_install_handlers
> acpi_ec_ecdt_probe
> acpi_init
> fbmem_init
> _stext
> register_irq_proc
> proc_pident_readdir
> kernel_init
> child_rip
> kernel_init
> child_rip
>
> RIP [...] acpi_ns_get_parent_node
>
> I can provide a screenshot (270kB) if this information is insufficient.
>
> The system booted with 2.6.29-rc1 so a recent change must be the cause
> of this panic.
>
> The system is an Asus B50A laptop running an x86_64 kernel.
>
> Maybe this problem is related to these messages I was seeing in
> bootups of previous kernels:
>
> [ 0.176398] ACPI Error (nsaccess-0434): ACPI path has too many
> parent prefixes (^) - reached beyond root node [20080926]
>
> Regards, Peter.
> --
> To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: ACPI related kernel panic when booting 2.6.29-rc2
2009-01-17 22:50 ` Alexey Starikovskiy
@ 2009-01-18 8:57 ` Peter Klotz
0 siblings, 0 replies; 3+ messages in thread
From: Peter Klotz @ 2009-01-18 8:57 UTC (permalink / raw
To: linux-acpi
Alexey Starikovskiy wrote:
> please use the patch from Tero Roponen.
>
> This patch fixes the crash I experienced in 2.6.29-rc2.
> Tested on ASUS M50vm.
>
> Signed-off-by: Tero Roponen <tero.roponen@gmail.com>
>
> diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
> index a2b82c9..5c2f5d3 100644
> --- a/drivers/acpi/ec.c
> +++ b/drivers/acpi/ec.c
> @@ -982,7 +982,7 @@ int __init acpi_ec_ecdt_probe(void)
> saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
> if (!saved_ec)
> return -ENOMEM;
> - memcpy(&saved_ec, boot_ec, sizeof(saved_ec));
> + memcpy(saved_ec, boot_ec, sizeof(*saved_ec));
> /* fall through */
> }
> /* This workaround is needed only on some broken machines,
Thanks a lot, this patch fixed the problem on my Asus B50A.
Regards, Peter.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2009-01-18 8:57 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-01-17 20:47 ACPI related kernel panic when booting 2.6.29-rc2 Peter Klotz
2009-01-17 22:50 ` Alexey Starikovskiy
2009-01-18 8:57 ` Peter Klotz
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.