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Date:   Tue, 5 Oct 2021 08:41:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     open list <linux-kernel@...r.kernel.org>,
        Shuah Khan <shuah@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, Jon Hunter <jonathanh@...dia.com>,
        linux-stable <stable@...r.kernel.org>,
        Pavel Machek <pavel@...x.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH 5.14 000/172] 5.14.10-rc1 review

On Tue, Oct 05, 2021 at 09:30:27AM +0530, Naresh Kamboju wrote:
> On Mon, 4 Oct 2021 at 18:43, Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
> >
> > This is the start of the stable review cycle for the 5.14.10 release.
> > There are 172 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, 06 Oct 2021 12:50:17 +0000.
> > Anything received after that time might be too late.
> >
> > The whole patch series can be found in one patch at:
> >         https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.14.10-rc1.gz
> > or in the git tree and branch at:
> >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.14.y
> > and the diffstat can be found below.
> >
> > thanks,
> >
> > greg k-h
> 
> Regression found on arm.
> following kernel BUG reported on stable-rc linux-5.14.y while booting
> BeagleBoard X15 device.
> 
> metadata:
>   git branch: linux-5.14.y
>   git repo: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc
>   git commit: cda15f9c69e08480d4308d0e5c62bd44324a9ff0
>   git describe: v5.14.9-173-gcda15f9c69e0
>   make_kernelversion: 5.14.10-rc1
>   kernel-config: https://builds.tuxbuild.com/1z2ozt5ntwqausJUkOMJ8zBgRqi/config
> 
> 
> Kernel crash:
> --------------
> [    6.457366] kernel BUG at kernel/cpu.c:1065!
> [    6.461669] Internal error: Oops - BUG: 0 [#1] SMP ARM
> [    6.466827] Modules linked in:
> [    6.469909] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.14.10-rc1 #1
> [    6.476318] Hardware name: Generic DRA74X (Flattened Device Tree)
> [    6.482452] PC is at cpuhp_report_idle_dead+0x74/0x78
> [    6.487518] LR is at do_idle+0x108/0x310
> [    6.491485] pc : [<c035a700>]    lr : [<c03a3cc0>]    psr: 20000093
> [    6.497772] sp : c2101ee0  ip : c2101f00  fp : c2101efc
> [    6.503051] r10: 00000000  r9 : c2100000  r8 : 00000000
> [    6.508300] r7 : c2108fe4  r6 : eeb04414  r5 : 2ca71000  r4 : c2093414
> [    6.514862] r3 : c2101ee0  r2 : 00000000  r1 : 000000e0  r0 : 00000000
> [    6.521423] Flags: nzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM
> Segment none
> [    6.528686] Control: 10c5387d  Table: 8020406a  DAC: 00000051
> [    6.534454] Register r0 information: NULL pointer
> [    6.539215] Register r1 information: non-paged memory
> [    6.544281] Register r2 information: NULL pointer
> [    6.549011] Register r3 information: non-slab/vmalloc memory
> [    6.554718] Register r4 information: non-slab/vmalloc memory
> [    6.560424] Register r5 information: non-paged memory
> [    6.565490] Register r6 information: non-slab/vmalloc memory
> [    6.571197] Register r7 information: non-slab/vmalloc memory
> [    6.576904] Register r8 information: NULL pointer
> [    6.581634] Register r9 information: non-slab/vmalloc memory
> [    6.587310] Register r10 information: NULL pointer
> [    6.592132] Register r11 information: non-slab/vmalloc memory
> [    6.597930] Register r12 information: non-slab/vmalloc memory
> [    6.603698] Process swapper/0 (pid: 0, stack limit = 0x(ptrval))
> [    6.609741] Stack: (0xc2101ee0 to 0xc2102000)
> [    6.614135] 1ee0: 00000000 c2100000 c2108f90 c2108fe4 c2101f44
> c2101f00 c03a3cc0 c035a698
> [    6.622375] 1f00: c210e0c0 00000002 c2101f00 c209f0f0 c2100000
> 5a76ee47 c2101f3c 000000e0
> [    6.630584] 1f20: c2101f58 00000002 c2108f40 00000000 c2100000
> 10c5387d c2101f54 c2101f48
> [    6.638824] 1f40: c03a4334 c03a3bc4 c2101f84 c2101f58 c1556b84
> c03a4318 00000000 00000000
> [    6.647033] 1f60: c1556a88 c2101f70 c0322004 c239e068 c1fd7a80
> ffffffff c2101f94 c2101f88
> [    6.655273] 1f80: c1f00af0 c15569c0 c2101ff4 c2101f98 c1f012a0
> c1f00ae4 ffffffff ffffffff
> [    6.663482] 1fa0: 00000000 c1f00640 00000000 00000000 00000000
> 00000000 00000000 c1fd7a80
> [    6.671722] 1fc0: 5a73e04d 00000000 00000000 c1f00330 00000051
> 10c0387d 00000000 8ffda000
> [    6.679931] 1fe0: 412fc0f2 10c5387d 00000000 c2101ff8 00000000
> c1f00b78 00000000 00000000
> [    6.688140] Backtrace:
> [    6.690612] [<c035a68c>] (cpuhp_report_idle_dead) from [<c03a3cc0>]
> (do_idle+0x108/0x310)
> [    6.698852]  r7:c2108fe4 r6:c2108f90 r5:c2100000 r4:00000000
> [    6.704559] [<c03a3bb8>] (do_idle) from [<c03a4334>]
> (cpu_startup_entry+0x28/0x2c)
> [    6.712188]  r10:10c5387d r9:c2100000 r8:00000000 r7:c2108f40
> r6:00000002 r5:c2101f58
> [    6.720031]  r4:000000e0
> [    6.722595] [<c03a430c>] (cpu_startup_entry) from [<c1556b84>]
> (rest_init+0x1d0/0x2fc)
> [    6.730560] [<c15569b4>] (rest_init) from [<c1f00af0>]
> (arch_call_rest_init+0x18/0x1c)
> [    6.738555]  r6:ffffffff r5:c1fd7a80 r4:c239e068
> [    6.743194] [<c1f00ad8>] (arch_call_rest_init) from [<c1f012a0>]
> (start_kernel+0x734/0x780)
> [    6.751586] [<c1f00b6c>] (start_kernel) from [<00000000>] (0x0)
> [    6.757568]  r10:10c5387d r9:412fc0f2 r8:8ffda000 r7:00000000
> r6:10c0387d r5:00000051
> [    6.765441]  r4:c1f00330
> [    6.767974] Code: e34c1035 e3a03000 eb039b62 e89da8f0 (e7f001f2)
> [    6.774108] ---[ end trace 8e1c46209559ca84 ]---
> 
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> 
> ref:
> https://lkft.validation.linaro.org/scheduler/job/3659621#L2841
> 
> -- 
> Linaro LKFT
> https://lkft.linaro.org

Any chance at bisection?

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