[Bug 220428] New: UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[Bug 220428] New: UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220428

            Bug ID: 220428
           Summary: UBSAN array-index-out-of-bounds warning in
                    radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD
                    6250
           Product: Drivers
           Version: 2.5
    Kernel Version: 6.15.9
          Hardware: AMD
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: dutra.astro@gmail.com
        Regression: No

[   17.138975] ------------[ cut here ]------------
[   17.138980] UBSAN: array-index-out-of-bounds in
drivers/gpu/drm/radeon/radeon_atombios.c:2720:34
[   17.138991] index 16 is out of range for type 'UCHAR [*]'
[   17.139004] CPU: 1 UID: 0 PID: 544 Comm: (udev-worker) Not tainted
6.15.9-201.fc42.x86_64 #1 PREEMPT(lazy) 
[   17.139016] Hardware name: Acer Aspire 5250/JE50-BZ, BIOS V1.08 09/26/2012
[   17.139022] Call Trace:
[   17.139031]  <TASK>
[   17.139041]  dump_stack_lvl+0x5d/0x80
[   17.139060]  ubsan_epilogue+0x5/0x2b
[   17.139070]  __ubsan_handle_out_of_bounds.cold+0x54/0x59
[   17.139086]  radeon_atombios_parse_power_table_6+0x3bc/0x3e0 [radeon]
[   17.139581]  radeon_atombios_get_power_modes+0x220/0x240 [radeon]
[   17.139977]  radeon_pm_init_dpm+0x77/0x240 [radeon]
[   17.140428]  evergreen_init+0x154/0x2b0 [radeon]
[   17.140885]  radeon_device_init+0x484/0xa60 [radeon]
[   17.141275]  ? pci_find_capability+0x79/0xb0
[   17.141288]  radeon_driver_load_kms+0xa6/0x230 [radeon]
[   17.141681]  radeon_pci_probe+0xef/0x1b0 [radeon]
[   17.142069]  local_pci_probe+0x42/0x90
[   17.142081]  pci_call_probe+0x5b/0x190
[   17.142090]  ? kernfs_create_link+0x61/0xb0
[   17.142106]  pci_device_probe+0x95/0x140
[   17.142117]  really_probe+0xde/0x340
[   17.142128]  ? pm_runtime_barrier+0x55/0x90
[   17.142141]  __driver_probe_device+0x78/0x140
[   17.142152]  driver_probe_device+0x1f/0xa0
[   17.142164]  ? __pfx___driver_attach+0x10/0x10
[   17.142173]  __driver_attach+0xcb/0x1e0
[   17.142185]  bus_for_each_dev+0x85/0xd0
[   17.142197]  bus_add_driver+0x12f/0x210
[   17.142209]  ? __pfx_radeon_module_init+0x10/0x10 [radeon]
[   17.142604]  driver_register+0x75/0xe0
[   17.142613]  ? radeon_register_atpx_handler+0xe/0x30 [radeon]
[   17.143030]  do_one_initcall+0x5b/0x300
[   17.143052]  do_init_module+0x84/0x260
[   17.143064]  init_module_from_file+0x8a/0xe0
[   17.143081]  idempotent_init_module+0x114/0x310
[   17.143095]  __x64_sys_finit_module+0x67/0xc0
[   17.143107]  do_syscall_64+0x7b/0x160
[   17.143119]  ? syscall_exit_to_user_mode+0x10/0x210
[   17.143141]  ? vfs_read+0x160/0x390
[   17.143150]  ? vfs_read+0x160/0x390
[   17.143163]  ? ksys_read+0x73/0xe0
[   17.143172]  ? syscall_exit_to_user_mode+0x10/0x210
[   17.143182]  ? do_syscall_64+0x87/0x160
[   17.143195]  ? syscall_exit_to_user_mode+0x10/0x210
[   17.143206]  ? do_syscall_64+0x87/0x160
[   17.143214]  ? exc_page_fault+0x7e/0x1a0
[   17.143224]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
[   17.143235] RIP: 0033:0x7f924c636a4d
[   17.143255] Code: ff 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 83 53 0f 00 f7 d8 64 89 01 48
[   17.143263] RSP: 002b:00007ffcb7ab1498 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[   17.143274] RAX: ffffffffffffffda RBX: 00005643357c7350 RCX:
00007f924c636a4d
[   17.143280] RDX: 0000000000000004 RSI: 00007f924b0ec965 RDI:
000000000000002b
[   17.143285] RBP: 00007ffcb7ab1550 R08: 0000000000000000 R09:
00007ffcb7ab1500
[   17.143290] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000020000
[   17.143294] R13: 00005643357ca790 R14: 00007f924b0ec965 R15:
0000000000000000
[   17.143306]  </TASK>
[   17.143470] ---[ end trace ]---


Since this is a Kernel video driver problem, I am reporting here and not
elsewhere.

This MAY be related to https://bugzilla.kernel.org/show_bug.cgi?id=218435

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[Bug 220428] UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220428

r.szwajkowski@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |r.szwajkowski@gmail.com

--- Comment #1 from r.szwajkowski@gmail.com ---
I've encountered the same error in kernel 6.16.5-200.fc42.x86_64. There is also
another one next to it that seems related:

UBSAN: array-index-out-of-bounds in drivers/gpu/drm/radeon/si_dpm.c:6824:32

both stack traces attached.

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[Bug 220428] UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220428

--- Comment #2 from r.szwajkowski@gmail.com ---
Created attachment 308692
  --> https://bugzilla.kernel.org/attachment.cgi?id=308692&action=edit
stack trace with 2 errors on 6.16.5-200.fc42.x86_64

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[Bug 220428] UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220428

Vedran Miletić (vedran@miletic.net) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vedran@miletic.net

--- Comment #3 from Vedran Miletić (vedran@miletic.net) ---
This is fixed in 6.19 series. Details:
https://gitlab.freedesktop.org/drm/amd/-/issues/4374

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[Bug 220428] UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220428

--- Comment #4 from Lucas (dutra.astro@gmail.com) ---
Awesome. Thanks for reporting. So, let's wait the 6.19 version be fully
released and stay a bit, so we can assure the problem will be solved for
everyone, then we the issue can be closed.

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[Bug 220428] UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220428

--- Comment #5 from Vedran Miletić (vedran@miletic.net) ---
Curious, can you reproduce https://gitlab.freedesktop.org/drm/amd/-/issues/4897
?

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[Bug 220428] UBSAN array-index-out-of-bounds warning in radeon_atombios.c on kernel 6.15.9 with AMD Radeon HD 6250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220428

--- Comment #6 from Lucas (dutra.astro@gmail.com) ---
No, this other error never appeared to me. My old Laptop from 2011 is an Acer
Aspire 5250 with an old GPU AMD Radeon HD 6250, and a C-50 processor. Using
radeon firmware on Linux.

I uninstalled Linux, since it will never be equal or better Windows 10 Lite in
this case. I do not pretend to reinstall linux on it, since it cannot even play
a YouTube video or play SuperTuxKart without lagging. Different from Windows
with Catalyst Radeon drivers which works fines, for both cases. Seems like
original radeon firmware from AMD was not open source neither well documented
back in the time, so I think it is literally impossible a equal or better
driver for Linux.

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