Message-ID: <ghd02cjpgk.fsf@gouders.net>
Date:   Wed, 23 Sep 2020 20:52:11 +0200
From:   Dirk Gouders <dirk@...ders.net>
To:     Alex Deucher <alexdeucher@...il.com>
Cc:     Felix Kuehling <Felix.Kuehling@....com>,
        LKML <linux-kernel@...r.kernel.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>
Subject: Re: amdgpu: call trace introduced in 5.9-rc1 for Lenovo L14 Renoir

Alex Deucher <alexdeucher@...il.com> writes:

> On Wed, Sep 23, 2020 at 8:54 AM Dirk Gouders <dirk@...ders.net> wrote:
>>
>> Dirk Gouders <dirk@...ders.net> writes:
>>
>> > Hi,
>> >
>> > I noticed a call trace (attached) when starting my machine (ThinkPad
>> > L14).  This machine is new and I am still working on it's
>> > configuration but visually noticeable is that scrolling in xterms with
>> > SHIFT-PgUp/PgDn is broken.  Using the mouse wheel works.
>> >
>> > It seems the call trace has been introduced between 5.8 and 5.9-rc1 and
>> > I tried to bisect this but always end in situations where I dont't find
>> > a bootable commit around the current bisect position.  Mainly the
>> > machine then hangs when udevd is started.
>>
>> I fixed my netconsole setup (had to use a switch instead of the
>> ports of a FritzBox) and tried a bisect, again (log below).  With the
>> commits between the earliest bad and latest good commits I marked, my
>> machine does not boot and hangs very early with the message:
>>
>>         fb0: switching to amdgpudrmfb from EFI VGA
>>
>> That was introduced with
>>
>>         c1cf79ca5ced drm/amdgpu: use IP discovery table for renoir
>>
>> and ended with a commit that instead produces the call trace
>>
>>         b6df946ef4b5 drm/amdgpu: fix the nullptr issue as for PWR IP not
>>                      existing in discovery table
>>
>> I was hoping to get further with the bisect but have no idea how to
>> avoid the early hangs.
>
> You can disable use of the IP discovery table by setting
> amdgpu.discovery=0 on the kernel command line in grub.

I tried that with b770f04ba2ee (next step in bisect), but no success
with this option, unfortunately.

I'm not using grub but directly booting from UEFI using CONFIG_CMDLINE.
Any other option I am using (root, loglevel and netconsole) works as
expected and I veryfied that "amdgpu.discovery=0" is included in
vmlinux.

Dirk

>
> Alex
>
>
>>
>> Dirk
>>
>> = bisect log ===========================================================
>> git bisect start
>> # bad: [9123e3a74ec7b934a4a099e98af6a61c2f80bbf5] Linux 5.9-rc1
>> git bisect bad 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
>> # good: [bcf876870b95592b52519ed4aafcf9d95999bc9c] Linux 5.8
>> git bisect good bcf876870b95592b52519ed4aafcf9d95999bc9c
>> # bad: [8186749621ed6b8fc42644c399e8c755a2b6f630] Merge tag
>> 'drm-next-2020-08-06' of git://anongit.freedesktop.org/drm/drm
>> git bisect bad 8186749621ed6b8fc42644c399e8c755a2b6f630
>> # good: [2324d50d051ec0f14a548e78554fb02513d6dcef] Merge tag 'docs-5.9' of git://git.lwn.net/linux
>> git bisect good 2324d50d051ec0f14a548e78554fb02513d6dcef
>> # bad: [54d44bfc56308d105b0da37392d8398bdc9d4745] drm/nouveau/nvif:
>> give every disp object a human-readable identifier
>> git bisect bad 54d44bfc56308d105b0da37392d8398bdc9d4745
>> # bad: [9555152beb1143c85c03f9b9de59863cbbe89f4b] Merge tag
>> 'amd-drm-next-5.9-2020-07-01' of
>> git://people.freedesktop.org/~agd5f/linux into drm-next
>> git bisect bad 9555152beb1143c85c03f9b9de59863cbbe89f4b
>> # bad: [dfd991794685b1228387214f28630b6e94e56944] drm/amd/display: Not doing bios data pack.
>> git bisect bad dfd991794685b1228387214f28630b6e94e56944
>> # good: [ba806f98f868ce107aa9c453fef751de9980e4af] drm/radeon: disable AGP by default
>> git bisect good ba806f98f868ce107aa9c453fef751de9980e4af
>> # good: [97d798b276e94a366dfb03d62bc90d4742ab3a31] drm/amdgpu: simplify ATIF backlight handling
>> git bisect good 97d798b276e94a366dfb03d62bc90d4742ab3a31
>> # good: [ac4e189a5623579c023c9cf8006422aef2a487b4] drm/amdgpu/gfx10: add navi12 to gfxoff case
>> git bisect good ac4e189a5623579c023c9cf8006422aef2a487b4
>> # good: [70534d1ee89ceadd03292d0c2da4dd4020189678] drm/amdgpu: simplify raven and renoir checks
>> git bisect good 70534d1ee89ceadd03292d0c2da4dd4020189678
>> # good: [4541ea81edde6ce9a1d9be082489aca7e8e7e1dc]
>> drm/[radeon|amdgpu]: Replace one-element array and use struct_size()
>> helper
>> git bisect good 4541ea81edde6ce9a1d9be082489aca7e8e7e1dc
>> # good: [84034ad4c0c0813c1350b43087eed036066edd5a] drm/amd/display: combine public interfaces into single header
>> git bisect good 84034ad4c0c0813c1350b43087eed036066edd5a
>> # good: [4f1fad0e9dbd762497df7c79309697ed8b2b6cfc] drm/amd/powerplay: stop thermal IRQs on suspend
>> git bisect good 4f1fad0e9dbd762497df7c79309697ed8b2b6cfc
>> # good: [4292b0b2026bc10bced32636ea02dd8eed00cea9] drm/amdgpu: clean up discovery testing
>> git bisect good 4292b0b2026bc10bced32636ea02dd8eed00cea9
>> # bad: [c0838cbee2d05c3eb8a2b5a3d1ce706a73008044] drm/amd/display: Revert "enable plane if plane_status changed"
>> git bisect bad c0838cbee2d05c3eb8a2b5a3d1ce706a73008044
>> # bad: [651a146526a04993c5bebf0e19cd9256f5e6511d] drm/amdgpu/jpeg: fix race condition issue for jpeg start
>> git bisect bad 651a146526a04993c5bebf0e19cd9256f5e6511d
>> # bad: [3bda8acd974e362069e291a78c59a10624debc6e] drm/amdgpu/sriov: Add clear vf fw support
>> git bisect bad 3bda8acd974e362069e291a78c59a10624debc6e
>> # bad: [b6df946ef4b5ae29183b2fdb2d12c381c757b3fb] drm/amdgpu: fix
>> the nullptr issue as for PWR IP not existing in discovery table
>> git bisect bad b6df946ef4b5ae29183b2fdb2d12c381c757b3fb
>> ========================================================================
>>
>>
>> > Please let me know if I can help with further information.
>> >
>> > Dirk
>> >
>> > = lspci -vk ============================================================
>> >
>> > 06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Renoir (rev c3) (prog-if 00 [VGA controller])
>> >         Subsystem: Lenovo Renoir
>> >         Flags: bus master, fast devsel, latency 0, IRQ 64
>> >         Memory at 460000000 (64-bit, prefetchable) [size=256M]
>> >         Memory at 470000000 (64-bit, prefetchable) [size=2M]
>> >         I/O ports at 1000 [size=256]
>> >         Memory at fd300000 (32-bit, non-prefetchable) [size=512K]
>> >         Capabilities: [48] Vendor Specific Information: Len=08 <?>
>> >         Capabilities: [50] Power Management version 3
>> >         Capabilities: [64] Express Legacy Endpoint, MSI 00
>> >         Capabilities: [a0] MSI: Enable- Count=1/4 Maskable- 64bit+
>> >         Capabilities: [c0] MSI-X: Enable+ Count=4 Masked-
>> >         Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
>> >         Capabilities: [270] Secondary PCI Express
>> >         Capabilities: [2b0] Address Translation Service (ATS)
>> >         Capabilities: [2c0] Page Request Interface (PRI)
>> >         Capabilities: [2d0] Process Address Space ID (PASID)
>> >         Capabilities: [400] Data Link Feature <?>
>> >         Capabilities: [410] Physical Layer 16.0 GT/s <?>
>> >         Capabilities: [440] Lane Margining at the Receiver <?>
>> >         Kernel driver in use: amdgpu
>> >         Kernel modules: amdgpu
>> >
>> > = call trace ===========================================================
>> >
>> > [    5.181468] amdgpu 0000:06:00.0: amdgpu: SMU is initialized successfully!
>> > [    5.182857] [drm] kiq ring mec 2 pipe 1 q 0
>> > [    5.183374] ------------[ cut here ]------------
>> > [    5.183448] WARNING: CPU: 1 PID: 684 at drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr.c:716 rn_clk_mgr_construct+0x242/0x389 [amdgpu]
>> > [    5.183449] Modules linked in: btusb btrtl btbcm btintel bluetooth ecdh_generic ecc iwlmvm mac80211 libarc4 wmi_bmof crct10dif_pclmul snd_hda_codec_realtek
>> > crc32c_intel iwlwifi snd_hda_codec_generic amdgpu(+) tpm_crb snd_hda_codec_hdmi gpu_sched i2c_algo_bit ttm sdhci_pci aesni_intel drm_kms_helper cqhci sdhci ccp
>> >  syscopyarea snd_hda_intel sysfillrect tpm_tis snd_intel_dspcfg sysimgblt xhci_pci tpm_tis_core fb_sys_fops r8169 snd_hda_codec mmc_core snd_hda_core xhci_hcd
>> > thinkpad_acpi cfg80211 realtek drm snd_pcm rng_core mdio_devres sha1_generic snd_timer nvram libphy i2c_piix4 snd k10temp soundcore ledtrig_audio rfkill tpm hw
>> > mon wmi battery ac video backlight pinctrl_amd acpi_cpufreq button efivarfs
>> > [    5.183470] CPU: 1 PID: 684 Comm: udevd Not tainted 5.9.0-rc6-x86_64+ #170
>> > [    5.183471] Hardware name: LENOVO 20U50008GE/20U50008GE, BIOS R19ET26W (1.10 ) 06/22/2020
>> > [    5.183531] RIP: 0010:rn_clk_mgr_construct+0x242/0x389 [amdgpu]
>> > [    5.183533] Code: 30 4d 85 c9 74 26 ba 03 00 00 00 83 bc d4 a8 00 00 00 00 89 d6 74 0a 83 bc d4 ac 00 00 00 00 75 40 48 ff ca 48 83 fa ff 75 e1 <0f> 0b 83 7
>> > b 20 01 0f 84 13 01 00 00 81 bd e8 00 00 00 ff 14 37 00
>> > [    5.183533] RSP: 0018:ffffc9000111f798 EFLAGS: 00010246
>> > [    5.183534] RAX: ffff8883fc1d8e00 RBX: ffff8883f925c9c0 RCX: 0000000000000000
>> > [    5.183535] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff8883f8da70c8
>> > [    5.183535] RBP: ffff8883fe8da000 R08: 0000000000000000 R09: ffff8883f724fc00
>> > [    5.183535] R10: 7fc9117fffffffff R11: ffff8883f925c9c0 R12: ffff8883f925c900
>> > [    5.183536] R13: ffff8883f5980000 R14: 0000000000000000 R15: 0000000000000001
>> > [    5.183537] FS:  00007f9e31a83d80(0000) GS:ffff88840ec40000(0000) knlGS:0000000000000000
>> > [    5.183537] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> > [    5.183538] CR2: 000055fdf9ec5568 CR3: 00000003fb2b6000 CR4: 0000000000350ee0
>> > [    5.183538] Call Trace:
>> > [    5.183595]  dc_clk_mgr_create+0x135/0x18b [amdgpu]
>> > [    5.183651]  dc_create+0x238/0x5e3 [amdgpu]
>> > [    5.183708]  amdgpu_dm_init+0x167/0x1101 [amdgpu]
>> > [    5.183762]  dm_hw_init+0xa/0x17 [amdgpu]
>> > [    5.183805]  amdgpu_device_init+0x1566/0x1853 [amdgpu]
>> > [    5.183811]  ? __kmalloc+0xad/0xbf
>> > [    5.183852]  ? amdgpu_driver_load_kms+0x1c/0x17f [amdgpu]
>> > [    5.183892]  amdgpu_driver_load_kms+0x41/0x17f [amdgpu]
>> > [    5.183959]  amdgpu_pci_probe+0x139/0x1c0 [amdgpu]
>> > [    5.183967]  pci_device_probe+0xc6/0x135
>> > [    5.183971]  really_probe+0x157/0x32a
>> > [    5.183974]  driver_probe_device+0x63/0x97
>> > [    5.183976]  device_driver_attach+0x37/0x50
>> > [    5.183978]  __driver_attach+0x92/0x9a
>> > [    5.183980]  ? device_driver_attach+0x50/0x50
>> > [    5.183983]  bus_for_each_dev+0x70/0xa6
>> > [    5.183986]  bus_add_driver+0x103/0x1b4
>> > [    5.183988]  driver_register+0x99/0xd2
>> > [    5.183990]  ? 0xffffffffa0b2f000
>> > [    5.183993]  do_one_initcall+0x8a/0x195
>> > [    5.183997]  ? kmem_cache_alloc_trace+0x80/0x8f
>> > [    5.184002]  do_init_module+0x56/0x1e8
>> > [    5.184005]  load_module+0x1c2c/0x2139
>> > [    5.184010]  ? __do_sys_finit_module+0x8f/0xb6
>> > [    5.184012]  __do_sys_finit_module+0x8f/0xb6
>> > [    5.184017]  do_syscall_64+0x5d/0x6a
>> > [    5.184021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
>> > [    5.184023] RIP: 0033:0x7f9e31b93919
>> > [    5.184026] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 47 05 0c 00 f7 d8 64 89 01 48
>> > [    5.184028] RSP: 002b:00007fff315a0fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
>> > [    5.184030] RAX: ffffffffffffffda RBX: 000055fdf9eebde0 RCX: 00007f9e31b93919
>> > [    5.184031] RDX: 0000000000000000 RSI: 00007f9e31c6a91d RDI: 0000000000000013
>> > [    5.184032] RBP: 0000000000020000 R08: 0000000000000000 R09: 00007fff315a1110
>> > [    5.184033] R10: 0000000000000013 R11: 0000000000000246 R12: 00007f9e31c6a91d
>> > [    5.184034] R13: 0000000000000000 R14: 000055fdf9ed8060 R15: 000055fdf9eebde0
>> > [    5.184037] ---[ end trace a782862b8da91b8d ]---
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