linux-kernel - Re: [PATCH 3.16 00/76] 3.16.56-rc1 review

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Date:   Mon, 12 Mar 2018 09:45:12 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Ben Hutchings <ben@...adent.org.uk>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org
Subject: Re: [PATCH 3.16 00/76] 3.16.56-rc1 review

On Mon, Mar 12, 2018 at 08:00:53AM -0700, Guenter Roeck wrote:
> On Mon, Mar 12, 2018 at 03:06:11AM +0000, Ben Hutchings wrote:
> > This is the start of the stable review cycle for the 3.16.56 release.
> > There are 76 patches in this series, which will be posted as responses
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> > 
> > Responses should be made by Wed Mar 14 12:00:00 UTC 2018.
> > Anything received after that time might be too late.
> > 
> 
> Build results:
> 	total: 136 pass: 136 fail:0
> Qemu test results:
> 	total: 115 pass: 112 fail:3
> Failed tests:
> 	mipsel:24Kf:malta_defconfig:smp:rootfs
> 	mipsel64:malta_defconfig:nosmp:rootfs
> 	mipsel64:malta_defconfig:smp:rootfs
> 
> The failures are due to newly added tests; the init process crashes.
> v3.16 passes those tests, so the problem was introduced later.
> I'll run a bisect later to see if I can find the culprit. If not,
> I'll drop the new tests from this kernel version.
> 
Turns out I did the bisect kalready. Attached. It does suggest that there
may be a real problem.

Guenter

---
# bad: [3e50cd97ed730bb0abfcdbc8c1a18871c2750c33] Linux 3.16.55
# good: [19583ca584d6f574384e17fe7613dfaeadcdc4a6] Linux 3.16
git bisect start 'HEAD' 'v3.16'
# good: [d1afef76e102be87955151c93bd51fd04c1c0c01] arm64: mm: ensure that the zero page is visible to the page table walker
git bisect good d1afef76e102be87955151c93bd51fd04c1c0c01
# good: [b6927bd60d353de044584ab9400aaccd8694fe1e] can: Fix kernel panic at security_sock_rcv_skb
git bisect good b6927bd60d353de044584ab9400aaccd8694fe1e
# good: [aa9a2ec0e82b64db1851d96ab1e9c83f8ea17a39] ARM: kexec: Make .text R/W in machine_kexec
git bisect good aa9a2ec0e82b64db1851d96ab1e9c83f8ea17a39
# good: [bf5ac638a0ffa923ed03ba8cdb8241b812f5fe4f] can: gs_usb: fix busy loop if no more TX context is available
git bisect good bf5ac638a0ffa923ed03ba8cdb8241b812f5fe4f
# good: [957a3d249cb16292a199f73b7138d23ee44ca433] Revert "x86: kvmclock: Disable use from vDSO if KPTI is enabled"
git bisect good 957a3d249cb16292a199f73b7138d23ee44ca433
# bad: [66fe40226beb16fb7809d275aec362f479388935] USB: serial: option: adding support for YUGA CLM920-NC5
git bisect bad 66fe40226beb16fb7809d275aec362f479388935
# good: [0b6433856a149885470f2ab3a138e99347c323a4] arm64: fpsimd: Prevent registers leaking from dead tasks
git bisect good 0b6433856a149885470f2ab3a138e99347c323a4
# good: [d6e7dd39a7f036eb3e48032d68d9e70f2e9781cf] MIPS: Clear [MSA]FPE CSR.Cause after notify_die()
git bisect good d6e7dd39a7f036eb3e48032d68d9e70f2e9781cf
# bad: [d97c5dd698a37a6f4fcce8132853620f7390f797] MIPS: Fix an FCSR access API regression with NT_PRFPREG and MSA
git bisect bad d97c5dd698a37a6f4fcce8132853620f7390f797
# bad: [b18b5d55c0e8b2bccda919f5f227ec3ba1056f2a] MIPS: Fix a preemption issue with thread's FPU defaults
git bisect bad b18b5d55c0e8b2bccda919f5f227ec3ba1056f2a
# good: [0efd2f915bbc608f66065c36b291d37efe0a0b0f] MIPS: Always clear FCSR cause bits after emulation
git bisect good 0efd2f915bbc608f66065c36b291d37efe0a0b0f
# bad: [3127c502272aca5f46b04c0b11afb464ad4fcbaf] MIPS: math-emu: Define IEEE 754-2008 feature control bits
git bisect bad 3127c502272aca5f46b04c0b11afb464ad4fcbaf
# bad: [8605aa2fea28c0485aeb60c114a9d52df1455915] MIPS: Set `si_code' for SIGFPE signals sent from emulation too
git bisect bad 8605aa2fea28c0485aeb60c114a9d52df1455915
# first bad commit: [8605aa2fea28c0485aeb60c114a9d52df1455915] MIPS: Set `si_code' for SIGFPE signals sent from emulation too