On Tue, Aug 09, 2016 at 09:33:26AM +0100, Paul Burton wrote:

On 09/08/16 09:24, Greg Kroah-Hartman wrote:

quoted

On Mon, Aug 08, 2016 at 10:03:39PM -0700, Guenter Roeck wrote:

quoted

On 08/08/2016 12:10 PM, Greg Kroah-Hartman wrote:

quoted

This is the start of the stable review cycle for the 4.6.6 release.
There are 96 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Wed Aug 10 18:02:27 UTC 2016.
Anything received after that time might be too late.

Build results:
	total: 148 pass: 146 fail: 2
Failed builds:
	unicore32:defconfig
	unicore32:allnoconfig

Qemu test results:
	total: 107 pass: 103 fail: 4
Failed tests:
	mips:malta_defconfig:nosmp
	mips64:malta_defconfig:nosmp
	mipsel:malta_defconfig:nosmp
	mipsel64:malta_defconfig:nosmp

The unicore32 build error is still not fixed in mainline.

mips:

Building mips:malta_defconfig:nosmp ... failed
------------
Error log:
drivers/built-in.o: In function `gic_shared_irq_domain_map.isra.0':
irq-mips-gic.c:(.text+0x1d58): undefined reference to `smp_num_siblings'
irq-mips-gic.c:(.text+0x1d5c): undefined reference to `smp_num_siblings'
irq-mips-gic.c:(.text+0x1de0): undefined reference to `smp_num_siblings'
irq-mips-gic.c:(.text+0x1de8): undefined reference to `smp_num_siblings'

Only seen with non-SMP builds. Tricky one, required bisect.

# bad: [0353fa20cb40ea75a7e3b7293b533bde4fa013e9] Linux 4.6.6-rc1
# good: [bed4c611a3b80fae04d75b9f85fcaf174bac1b06] Linux 4.6.5
git bisect start 'HEAD' 'v4.6.5'
# good: [8d3b41c18cff2db7ccea71243b945a33610b8cb5] cgroup: remove redundant cleanup in css_create
git bisect good 8d3b41c18cff2db7ccea71243b945a33610b8cb583c9f9e994f5c963fc652a52befc120699dcc591
# good: [3a255979bc75ffcc263928045df4b5f46df8a8ca] sched/fair: Fix effective_load() to consistently use smoothed load
git bisect good 3a255979bc75ffcc263928045df4b5f46df8a8ca
# bad: [6eafb1f777de375b52c8a83d262da2885a28579a] posix_cpu_timer: Exit early when process has been reaped
git bisect bad 6eafb1f777de375b52c8a83d262da2885a28579a
# bad: [83c9f9e994f5c963fc652a52befc120699dcc591] irqchip/mips-gic: Map to VPs using HW VPNum
git bisect bad 83c9f9e994f5c963fc652a52befc120699dcc591
# good: [3a1e9944db1570f9b654b7a187f13898e5c59529] can: fix handling of unmodifiable configuration options fix
git bisect good 3a1e9944db1570f9b654b7a187f13898e5c59529
# good: [f06b9b8071ae6e383931795e2a459d6abc0bc7bd] RDS: fix rds_tcp_init() error path
git bisect good f06b9b8071ae6e383931795e2a459d6abc0bc7bd
# first bad commit: [83c9f9e994f5c963fc652a52befc120699dcc591] irqchip/mips-gic: Map to VPs using HW VPNum

Reverting 83c9f9e994f5c963fc652a52befc120699dcc591 fixes the problem.
Its description suggests that it fixes a real bug, though, so copying Paul for input.

Thanks for the bisection and report.

Paul, any ideas?  Why doesn't this also fail in 4.7?

thanks,

greg k-h

Hi Greg, Guenter,

The easiest way to fix this is likely to backport a60ae81e5e59 ("MIPS: CM:
Fix mips_cm_max_vp_width for UP kernels") which went into mainline in the
4.7 cycle. Apologies for overlooking the need for that one in stable.

No problem, now added to the 4.6 queue, thanks.

greg k-h