Message-ID: <48b20ca3-37f5-4d9c-b36f-1d05a2ee4f5c@leemhuis.info>
Date: Sun, 25 Aug 2024 09:24:27 +0200
From: "Linux regression tracking (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: bartosz.golaszewski@...aro.org, andersson@...nel.org,
 Rudraksha Gupta <guptarud@...il.com>
Cc: brgl@...ev.pl, konrad.dybcio@...aro.org, robh@...nel.org,
 krzk+dt@...nel.org, conor+dt@...nel.org, robimarko@...il.com,
 quic_gurus@...cinc.com, luzmaximilian@...il.com, catalin.marinas@....com,
 will@...nel.org, srinivas.kandagatla@...aro.org, arnd@...db.de,
 quic_eberman@...cinc.com, elder@...nel.org, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, kernel@...cinc.com,
 ahalaney@...hat.com, quic_djaggi@...cinc.com, regressions@...ts.linux.dev
Subject: Re: [REGRESSION] firmware: qcom: scm: smc: switch to using the SCM
 allocator

Lo! Thx for your report!

On 25.08.24 08:51, Rudraksha Gupta wrote:
> 
> Found a regression with a platform that has the msm8960 SoC. Was hoping
> to code up a fix myself, but I'm not adept in ARM architecture or the
> Linux kernel, so I'm just reporting it here. Reverting this commit seems
> to fix it as well. Please let me know if there is anything else I should
> provide for this regression report.
> 
> #regzbot introduced 449d0d84bcd8246b508d07995326d13c54488b8c

FWIW, that is 449d0d84bcd824 ("firmware: qcom: scm: smc: switch to using
the SCM allocator") [v6.11-rc1] which was authored by Bartosz
Golaszewski and commited by Bjorn Andersson.
 
> Error: https://pastebin.com/SDRENUGk

Better include the exact problem you face in your report so
that search engines can do their magic; makes it also easier
to handle for everyone.

Furthermore two quick questions:

[    0.000000] Linux version 6.10.0-rc1-msm8960+ (a@...-l-AMER03105) (Ubuntu clang version 16.0.6 (15), Ubuntu LLD 16.0.6) #17 SMP Sat

Is that a vanilla kernel or one close to it? That "msm8960+" sounds
somewhat suspicious. 

And does the problem still happen with latest mainline? Cconsider
retrying with -rc5, which should be out in the next 24h.

And FWIW, here is the afaics relevant part of the problem: 

[    0.047411] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.051541] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.060470] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.066411] 8<--- cut here ---
[    0.071896] Unable to handle kernel NULL pointer dereference at virtual address 00000090 when read
[    0.074743] [00000090] *pgd=00000000
[    0.083675] Internal error: Oops: 5 [#1] SMP ARM
[    0.087283] Modules linked in:
[    0.091833] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-rc1-msm8960+ #17
[    0.094673] Hardware name: Generic DT based system
[    0.101804] PC is at qcom_scm_get_tzmem_pool+0x1c/0x24
[    0.106443] LR is at __scm_smc_call+0x30/0x2d4
[    0.111511] pc : [<c089176c>]    lr : [<c0893fb0>]    psr: 60000013
[    0.115896] sp : f0815d78  ip : f0815e98  fp : f0815d78
[    0.121995] r10: 00000002  r9 : f0815e18  r8 : 00000001
[    0.127150] r7 : c1106694  r6 : f0815e30  r5 : c126ff4c  r4 : 00000001
[    0.132308] r3 : f0815e18  r2 : 00000002  r1 : f0815e30  r0 : 00000000
[    0.138839] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    0.145288] Control: 10c5787d  Table: 8000406a  DAC: 00000051
[    0.152413] Register r0 information: NULL pointer
[    0.158083] Register r1 information: 2-page vmalloc region starting at 0xf0814000 allocated at copy_process+0x16c/0xddc
[    0.162735] Register r2 information: non-paged memory
[    0.173205] Register r3 information: 2-page vmalloc region starting at 0xf0814000 allocated at copy_process+0x16c/0xddc
[    0.178373] Register r4 information: non-paged memory
[    0.188845] Register r5 information: non-slab/vmalloc memory
[    0.194002] Register r6 information: 2-page vmalloc region starting at 0xf0814000 allocated at copy_process+0x16c/0xddc
[    0.199682] Register r7 information: non-slab/vmalloc memory
[    0.210069] Register r8 information: non-paged memory
[    0.215911] Register r9 information: 2-page vmalloc region starting at 0xf0814000 allocated at copy_process+0x16c/0xddc
[    0.220819] Register r10 information: non-paged memory
[    0.231292] Register r11 information: 2-page vmalloc region starting at 0xf0814000 allocated at copy_process+0x16c/0xddc
[    0.236460] Register r12 information: 2-page vmalloc region starting at 0xf0814000 allocated at copy_process+0x16c/0xddc
[    0.247372] Process swapper/0 (pid: 1, stack limit = 0x(ptrval))
[    0.258105] Stack: (0xf0815d78 to 0xf0816000)
[    0.264034] 5d60:                                                       f0815e08 c0893fb0
[    0.268257] 5d80: f0815d9c c01953fc c1118278 c1124508 00000037 00000000 c1118278 f0815da8
[    0.276334] 5da0: c125875c 00000800 00000036 00000000 039ab58a 00000000 c2000030 c0a5cee4
[    0.284411] 5dc0: f0815dd8 c01953fc c1118278 c1124508 00000037 00000000 c1118278 00000000
[    0.292489] 5de0: f0815e18 c01953fc dedf13d9 00000001 c126ff4c 00000000 c1106694 00000001
[    0.300564] 5e00: f0815ef0 00000000 f0815eb0 c0893658 00000001 c0195934 f0815e78 c0195934
[    0.308641] 5e20: f0815e48 00000000 f0815ebf f0815e4c 00000006 00000001 00000001 00000000
[    0.316718] 5e40: 02000601 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.324794] 5e60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.332873] 5e80: 00000000 00000000 00000000 00000000 00000002 00000000 f0815ebf dedf13d9
[    0.340950] 5ea0: 00000000 f0815ee0 00000000 00000000 f0815ed0 c0891aa0 f0815ec8 00a8fbe0
[    0.349027] 5ec0: f0815ef8 c0b8c08f 00000001 00000000 f0815f68 c0891980 00000001 c01012a0
[    0.357103] 5ee0: 00000001 00000001 00000002 00000000 00000001 00000000 801012a0 00000000
[    0.365180] 5f00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.373258] 5f20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.381335] 5f40: 00000002 00000000 dedf13d9 c1509100 00000001 c1568000 00000000 00000000
[    0.389411] 5f60: 00000000 00000000 f0815f80 c100bf5c c1509100 00000001 c1568000 00000000
[    0.397489] 5f80: f0815f98 c1001538 00000000 c0a8b56c 00000000 00000000 f0815fa8 c0a8b58c
[    0.405565] 5fa0: 00000000 00000000 00000000 c010014c 00000000 00000000 00000000 00000000
[    0.413643] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.421718] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    0.429788] Call trace:
[    0.429813]  qcom_scm_get_tzmem_pool from __scm_smc_call+0x30/0x2d4
[    0.440444]  __scm_smc_call from __get_convention+0xac/0x128
[    0.446370]  __get_convention from qcom_scm_call_atomic+0x24/0x90
[    0.452214]  qcom_scm_call_atomic from qcom_scm_set_boot_addr+0xe4/0x100
[    0.458142]  qcom_scm_set_boot_addr from qcom_smp_prepare_cpus+0x1c/0x94
[    0.464849]  qcom_smp_prepare_cpus from kernel_init_freeable+0xcc/0x140
[    0.471462]  kernel_init_freeable from kernel_init+0x20/0x144
[    0.477734]  kernel_init from ret_from_fork+0x14/0x28
[    0.483571] Exception stack(0xf0815fb0 to 0xf0815ff8)
[    0.488561] 5fa0:                                     00000000 00000000 00000000 00000000
[    0.493554] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.501628] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    0.509710] Code: e28dd004 e30f0f50 e34c0126 e5900000 (e5900090)
[    0.516140] ---[ end trace 0000000000000000 ]---
[    0.522249] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[    0.526890] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---

> Defconfig: https://pastebin.com/CRDjC39a
> 
> Platform:
> https://wiki.postmarketos.org/wiki/Samsung_Galaxy_Express_SGH-I437_(samsung-expressatt)

Ciao, Thorsten

P.S.:

#regzbot title: firmware: qcom: scm: smc: msm8960 SoC fails to boot

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