commit 6797b4f causes boot hangs with nfsroot

commit 6797b4f causes boot hangs with nfsroot

[Paul Walmsley]

Hi Jon,

Looks like commit 6797b4fe0e554ce71f47038fd929c9ca929a9f3c ("ARM: OMAP2+: 
Prevent potential crash if GPMC probe fails") causes hangs on boot.  I 
suspect it may only occur when the root filesystem is on NFS over 
GPMC-based Ethernet.

Here's the current state of affairs at v3.9-rc1 on the two boards that 
show the problem:

http://www.pwsan.com/omap/testlogs/test_v3.9-rc1/20130312100243/boot/2430sdp/2430sdp_log.txt
http://www.pwsan.com/omap/testlogs/test_v3.9-rc1/20130312100243/boot/37xxevm/37xxevm_log.txt

and here are the bootlogs after reverting 6797b4f:

http://www.pwsan.com/omap/testlogs/trace_boot_hang_3.9-rc/20130316132833/boot/2430sdp/2430sdp_log.txt
http://www.pwsan.com/omap/testlogs/trace_boot_hang_3.9-rc/20130316132833/boot/37xxevm/37xxevm_log.txt

... where the boards at least boot to userspace.  I don't know what's up 
with the NFS-related lock problems.  Those look like yet another bug that 
is presumably not OMAP-specific :-(

Care to take a look at the commit 6797b4f bug?


- Paul

Re: commit 6797b4f causes boot hangs with nfsroot

[Paul Walmsley]

Hi Jon,

On Sat, 16 Mar 2013, Paul Walmsley wrote:

> Looks like commit 6797b4fe0e554ce71f47038fd929c9ca929a9f3c ("ARM: OMAP2+: 
> Prevent potential crash if GPMC probe fails") causes hangs on boot.  I 
> suspect it may only occur when the root filesystem is on NFS over 
> GPMC-based Ethernet.

Looks like you sent a patch for this a month ago and it just now got 
merged with v3.9-rc3 as commit 31d9adca82ce65e5c99d045b5fd917c702b6fce3 
("ARM: OMAP2+: Fix broken gpmc support").  Thanks for fixing this promptly 
and sorry about the extra noise,


- Paul

Re: commit 6797b4f causes boot hangs with nfsroot

[Jon Hunter]

On 03/17/2013 08:57 PM, Paul Walmsley wrote:
> Hi Jon,
> 
> On Sat, 16 Mar 2013, Paul Walmsley wrote:
> 
>> Looks like commit 6797b4fe0e554ce71f47038fd929c9ca929a9f3c ("ARM: OMAP2+: 
>> Prevent potential crash if GPMC probe fails") causes hangs on boot.  I 
>> suspect it may only occur when the root filesystem is on NFS over 
>> GPMC-based Ethernet.
> 
> Looks like you sent a patch for this a month ago and it just now got 
> merged with v3.9-rc3 as commit 31d9adca82ce65e5c99d045b5fd917c702b6fce3 
> ("ARM: OMAP2+: Fix broken gpmc support").  Thanks for fixing this promptly 
> and sorry about the extra noise,

Yes I see that just got merged last week so we should be good now.

Cheers
Jon