On Fri, Jul 4, 2014 at 8:40 PM, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> Hi Sachin,
>
> On Fri, 4 Jul 2014 14:12:11 +0530 Sachin Kamat <spk.linux@xxxxxxxxx> wrote:
>>
>> Was bisecting a kernel crash on Arndale octa board (Exynos5420). It
>> points to a merge
>> commit:
>> 40556a4c485d12d324f1ea196cc30f590e564237 is the first bad commit
>> ("Merge remote-tracking branch 'nfsd/nfsd-next'").
>>
>> How do I proceed with this?
>
> I guess we get the owner of the tree (possibly) in question involved
> (cc'd).
>
>> Bisect log as follows:
>>
>> git bisect start
>> # good: [4c834452aad01531db949414f94f817a86348d59] Linux 3.16-rc3
>> git bisect good 4c834452aad01531db949414f94f817a86348d59
>> # bad: [bb62c798798659624c53e3727bbc18cf47eb7ae8] Add linux-next
>> specific files for 20140704
>> git bisect bad bb62c798798659624c53e3727bbc18cf47eb7ae8
>> # bad: [de5ea10b7647b299d27a40511772f024629b466d] Merge
>> remote-tracking branch 'md/for-next'
>> git bisect bad de5ea10b7647b299d27a40511772f024629b466d
>> # bad: [3ca365b4451d1bab28adc72a985d9bbdf535df0e] Merge
>> remote-tracking branch 'dmaengine/next'
>> git bisect bad 3ca365b4451d1bab28adc72a985d9bbdf535df0e
>> # good: [d72d4e47cb1e8ac1259a5f5935320ae1e7022066] Merge
>> remote-tracking branch 'renesas/next'
>> git bisect good d72d4e47cb1e8ac1259a5f5935320ae1e7022066
>> # good: [fdb82f0a3d19eaa0661d799b980d0a9b689fcf75] Merge
>> remote-tracking branch 'nfs/linux-next'
>> git bisect good fdb82f0a3d19eaa0661d799b980d0a9b689fcf75
>> # bad: [fc48eed8cd350e4be1227ff3c990d48906afd00a] Merge
>> remote-tracking branch 'hwmon-staging/hwmon-next'
>> git bisect bad fc48eed8cd350e4be1227ff3c990d48906afd00a
>> # bad: [7d3f94ee2f2808b13dd3a96f6e6ca754a954d4b9] Merge
>> remote-tracking branch 'ubifs/linux-next'
>> git bisect bad 7d3f94ee2f2808b13dd3a96f6e6ca754a954d4b9
>> # good: [8cdb8b21b1d00856b885734c514821627c8078bc] NFSD: Avoid warning
>> message when compile at i686 arch
>> git bisect good 8cdb8b21b1d00856b885734c514821627c8078bc
>> # good: [da575690c01993471e38faf3eee1991ee69d7b20] nfsd: clean up
>> nfsd4_close_open_stateid
>> git bisect good da575690c01993471e38faf3eee1991ee69d7b20
>> # good: [95217c1e686bdd7c27b8483bbdda1c09d6fa9a92] nfsd: Don't get a
>> session reference without a client reference
>> git bisect good 95217c1e686bdd7c27b8483bbdda1c09d6fa9a92
>> # good: [bdd79ee31bf842051365c798effaffe0e647b501] nfsd: Allow struct
>> nfsd4_compound_state to cache the nfs4_client
>> git bisect good bdd79ee31bf842051365c798effaffe0e647b501
>> # good: [e9110361a9a4e258b072b14bd44eb78cf11453cb] UBI: fix the
>> volumes tree sorting criteria
>> git bisect good e9110361a9a4e258b072b14bd44eb78cf11453cb
>> # bad: [40556a4c485d12d324f1ea196cc30f590e564237] Merge
>> remote-tracking branch 'nfsd/nfsd-next'
>> git bisect bad 40556a4c485d12d324f1ea196cc30f590e564237
>>
>> Regards,
>> Sachin.
>
> Can you please double check that commit bdd79ee31bf8 is good and commit
> 40556a4c485d is bad. Also check that commit fdb82f0a3d19 is good.
>
> In that case we have the unlikely event that the (automated) git merge
> is not correct or patches on each side of the merge semantically
> interact badly.
>
> I guess the next thing to try is just Linus' tree (commit 5170a3b24a91)
> merged with the nfsd tree (commit 2fc193cf924e).
>
> You should also post your information about the crash you are
> diagnosing as others may have seen it as well - or know what may cause
> it.
Thanks Stephen. I will give it a try on Monday.
--
Regards,
Sachin.
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