linux-kernel - Re: linux-next: Tree for Mar 14 (mips qemu failure bisected)

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Message-ID: <20160315052659.GA9320@roeck-us.net>
Date:	Mon, 14 Mar 2016 22:26:59 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Qais Yousef <qais.yousef@...tec.com>,
	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org
Subject: Re: linux-next: Tree for Mar 14 (mips qemu failure bisected)

On Mon, Mar 14, 2016 at 07:37:29AM -0700, Guenter Roeck wrote:
> On Mon, Mar 14, 2016 at 05:40:37PM +1100, Stephen Rothwell wrote:
> > Hi all,
> > 
> > Changes since 20160311:
> > 
> > The vfs tree gained a conflict against Linus' tree. I also applied a
> > patch for a known runtime bug.
> > 
> > The tip tree gained a conflict against the mips tree.
> > 
> > The aio tree still had a build failure so I removed several commits
> > from it.  It also gained a conflict against the vfs tree.
> > 
> > Non-merge commits (relative to Linus' tree): 11202
> >  8646 files changed, 426680 insertions(+), 211740 deletions(-)
> > 
> 
> To give people an idea what to expect in the merge window, here are my current
> build and runtime test results. Some of the runtime failures are due to the
> newly introduced i2c bug, but many (including the arm64 boot failures) have
> been around for a while.
> 
[ ... ]

> Qemu test results:
> 	total: 96 pass: 69 fail: 27
> Failed tests:
[ ... ]
> 	mips:mips_malta_smp_defconfig

I bisected this failure to commit bb11cff327e54 ("MIPS: Make smp CMP, CPS and MT
use the new generic IPI functions". Bisect log is attached.

> 	mips64:smp:mips_malta64_defconfig
> 	mips:mipsel_malta_smp_defconfig
> 	mips:mipsel_malta64_smp_defconfig

If necessary I can repeat the bisect for those. Please let me know.

Thanks,
Guenter

---
Bisect log:

# bad: [4342eec3c5a2402ca5de3d6e56f541fe1c5171e2] Add linux-next specific files for 20160314
# good: [f6cede5b49e822ebc41a099fe41ab4989f64e2cb] Linux 4.5-rc7
git bisect start 'HEAD' 'v4.5-rc7'
# good: [0525c3e26ec2c43cd509433be3be25210a0154ef] Merge remote-tracking branch 'drm-tegra/drm/tegra/for-next'
git bisect good 0525c3e26ec2c43cd509433be3be25210a0154ef
# bad: [385128a1b49762c1b9515c9f6294aeebbc55b956] Merge remote-tracking branch 'usb-chipidea-next/ci-for-usb-next'
git bisect bad 385128a1b49762c1b9515c9f6294aeebbc55b956
# good: [dfdb27baab4fc45c9399a991270413d0fb1c694a] Merge remote-tracking branch 'spi/for-next'
git bisect good dfdb27baab4fc45c9399a991270413d0fb1c694a
# bad: [e368d7d2a0dce6d6795ead1fc8a09bcca8a4a565] Merge branch 'timers/nohz'
git bisect bad e368d7d2a0dce6d6795ead1fc8a09bcca8a4a565
# good: [ced30bc9129777d715057d06fc8dbdfd3b81e94d] Merge tag 'perf-core-for-mingo-20160310' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
git bisect good ced30bc9129777d715057d06fc8dbdfd3b81e94d
# bad: [656a61d4d9cbb8dfc2d007281190b2eccebad522] manual merge of mm/pkeys
git bisect bad 656a61d4d9cbb8dfc2d007281190b2eccebad522
# good: [16f7379f2da43f29d9faa2f474745e2705a3f510] Merge branch 'efi/core'
git bisect good 16f7379f2da43f29d9faa2f474745e2705a3f510
# bad: [a7fb9a8169be9a55e0cfb98346aece1b51c016fa] Merge branch 'locking/core'
git bisect bad a7fb9a8169be9a55e0cfb98346aece1b51c016fa
# good: [2a07870511829977d02609dac6450017b0419ea9] irqchip/mips-gic: Use gic_vpes instead of NR_CPUS
git bisect good 2a07870511829977d02609dac6450017b0419ea9
# good: [eaff0e7003cca6c2748b67ead2d4b1a8ad858fc7] locking/pvqspinlock: Move lock stealing count tracking code into pv_queued_spin_steal_lock()
git bisect good eaff0e7003cca6c2748b67ead2d4b1a8ad858fc7
# good: [013e379a3094ff2898f8d33cfbff1573d471ee14] tools/lib/lockdep: Fix link creation warning
git bisect good 013e379a3094ff2898f8d33cfbff1573d471ee14
# bad: [7eb8c99db26cc6499bfb1eba72dffc4730570752] MIPS: Delete smp-gic.c
git bisect bad 7eb8c99db26cc6499bfb1eba72dffc4730570752
# good: [fbde2d7d8290d8c642d591a471356abda2446874] MIPS: Add generic SMP IPI support
git bisect good fbde2d7d8290d8c642d591a471356abda2446874
# bad: [bb11cff327e54179c13446c4022ed4ed7d4871c7] MIPS: Make smp CMP, CPS and MT use the new generic IPI functions
git bisect bad bb11cff327e54179c13446c4022ed4ed7d4871c7
# first bad commit: [bb11cff327e54179c13446c4022ed4ed7d4871c7] MIPS: Make smp CMP, CPS and MT use the new generic IPI functions