[Bug 215807] Bad page state in process systemd-udevd

[Andrew Morton]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

hm, that's my third `bad page' report in three emails.  But I'm not
seeing a pattern - this one might be a DRM thing.

On Tue, 12 Apr 2022 20:52:18 +0000 bugzilla-daemon at kernel.org wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=215807
> 
> paragw (parag.lkml at gmail.com) changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |parag.lkml at gmail.com
> 
> --- Comment #1 from paragw (parag.lkml at gmail.com) ---
> Same issue on different hardware - multiple occurrences of below on 5.18.0-rc2+
> boot  -
> 
> [    8.453363] amdgpu: Topology: Add CPU node
> [    8.467169] BUG: Bad page state in process systemd-udevd  pfn:11b403
> [    8.467180] fbcon: Taking over console
> [    8.467188] page:000000002cc06944 refcount:0 mapcount:0
> mapping:0000000000000000 index:0x3 pfn:0x11b403
> [    8.467195] head:00000000aa25e58e order:9 compound_mapcount:0
> compound_pincount:0
> [    8.467198] flags: 0x17ffffc0010000(head|node=0|zone=2|lastcpupid=0x1fffff)
> [    8.467205] raw: 0017ffffc0000000 fffff2da846d0001 fffff2da846d00c8
> 0000000000000000
> [    8.467208] raw: 0000000000000000 0000000000000000 00000000ffffffff
> 0000000000000000
> [    8.467210] head: 0017ffffc0010000 0000000000000000 dead000000000122
> 0000000000000000
> [    8.467212] head: 0000000000000000 0000000000000000 00000000ffffffff
> 0000000000000000
> [    8.467214] page dumped because: corrupted mapping in tail page
> [    8.467215] Modules linked in: amdgpu(+) rtsx_usb_sdmmc mmc_core
> drm_ttm_helper ttm rtsx_usb hid_sensor_hub
>  iommu_v2 nvme crct10dif_pclmul crc32_pclmul gpu_sched crc32c_intel nvme_core
> uas ccp drm_dp_helper usb_storag
> e ghash_clmulni_intel amd_sfh ucsi_acpi sp5100_tco typec_ucsi typec
> i2c_hid_acpi i2c_hid fuse ipmi_devintf ipm
> i_msghandler
> [    8.467249] CPU: 2 PID: 416 Comm: systemd-udevd Not tainted 5.18.0-rc2+ #1
> [    8.467254] Hardware name: ASUSTeK COMPUTER INC. MINIPC PN50/PN50, BIOS 0623
> 05/13/2021
> [    8.467256] Call Trace:
> [    8.467260]  <TASK>
> [    8.467265]  dump_stack_lvl+0x48/0x5d
> [    8.467274]  bad_page.cold+0x63/0x8f
> [    8.467280]  free_tail_pages_check+0x144/0x180
> [    8.467287]  free_pcp_prepare+0x2e8/0x410
> [    8.467292]  free_unref_page+0x20/0x150
> [    8.467298]  __vunmap+0x217/0x2c0
> [    8.467303]  drm_fbdev_cleanup+0x5f/0xb0
> [    8.467310]  drm_fbdev_fb_destroy+0x19/0x30
> [    8.467315]  unregister_framebuffer+0x30/0x40
> [    8.467321]  drm_client_dev_unregister+0x6e/0xe0
> [    8.467327]  drm_dev_unregister+0x32/0x80
> [    8.467332]  drm_dev_unplug+0x25/0x40
> [    8.467335]  simpledrm_remove+0x15/0x20
> [    8.467339]  platform_remove+0x23/0x40
> [    8.467344]  device_release_driver_internal+0x1b3/0x210
> [    8.467349]  bus_remove_device+0xdc/0x150
> [    8.467353]  device_del+0x18f/0x3f0
> [    8.467359]  platform_device_del.part.0+0x13/0x70
> [    8.467364]  platform_device_unregister+0x20/0x30
> [    8.467369]  drm_aperture_detach_drivers+0xa1/0xd0
> [    8.467376]  drm_aperture_remove_conflicting_pci_framebuffers+0x43/0x80
> [    8.467382]  amdgpu_pci_probe+0x12a/0x3c0 [amdgpu]
> [    8.467833]  local_pci_probe+0x45/0x80
> [    8.467840]  pci_device_probe+0xaf/0x200
> [    8.467846]  really_probe+0x1a1/0x370
> [    8.467850]  __driver_probe_device+0xfc/0x170
> [    8.467854]  driver_probe_device+0x1f/0x90
> [    8.467858]  __driver_attach+0xbf/0x1a0
> [    8.467862]  ? __device_attach_driver+0xe0/0xe0
> [    8.467866]  bus_for_each_dev+0x66/0x90
> [    8.467870]  bus_add_driver+0x152/0x1f0
> [    8.467873]  driver_register+0x8d/0xe0
> [    8.467877]  ? 0xffffffffc0518000
> [    8.467880]  do_one_initcall+0x48/0x200
> [    8.467887]  ? do_init_module+0x22/0x250
> [    8.467892]  ? kmem_cache_alloc_trace+0x165/0x2c0
> [    8.467898]  do_init_module+0x4a/0x250
> [    8.467902]  __do_sys_finit_module+0x93/0xf0
> [    8.467911]  do_syscall_64+0x3e/0x90
> [    8.467917]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [    8.467923] RIP: 0033:0x7fb9b13cd59d
> [    8.467928] Code: 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 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 4b
> 78 0e 00 f7 d8 64 89 01 48
> [    8.467931] RSP: 002b:00007ffc90f5b558 EFLAGS: 00000246 ORIG_RAX:
> 0000000000000139
> [    8.467936] RAX: ffffffffffffffda RBX: 0000562a33e1bcd0 RCX:
> 00007fb9b13cd59d
> [    8.467938] RDX: 0000000000000000 RSI: 00007fb9b152f43c RDI:
> 0000000000000011
> [    8.467940] RBP: 00007fb9b152f43c R08: 0000000000000000 R09:
> 0000562a33e1bf90
> [    8.467943] R10: 0000000000000011 R11: 0000000000000246 R12:
> 0000000000020000
> [    8.467945] R13: 0000562a33df8f90 R14: 0000000000000000 R15:
> 0000562a33e1d540
> [    8.467950]  </TASK>
> 
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