Re: [PATCH 4.6 00/96] 4.6.6-stable review

[Greg Kroah-Hartman]

On Mon, Aug 08, 2016 at 10:03:39PM -0700, Guenter Roeck wrote:
> On 08/08/2016 12:10 PM, Greg Kroah-Hartman wrote:
> > 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