Bug#767742: linux-image-3.16-3-amd64: radeon KMS does not work at boot
On Sun, 2014-11-02 at 18:03 +0000, Ben Hutchings wrote:
> Please can you report this at <https://bugs.freeedesktop.org> under
> product 'DRI', component 'DRM/Radeon'. Let us know the bug number or
> URL so we can track it.
https://bugs.freedesktop.org/show_bug.cgi?id=85771
I configured netconsole, and could capture a null pointer dereference in
the radeon module (stack trace from my own compilation of 3.17.2):
[ 6.440842] BUG: unable to handle kernel NULL pointer dereference at 0000000000000090
[ 6.441017] IP: [<ffffffffa04e08c3>] dce6_bandwidth_update+0x43/0x100 [radeon]
[ 6.441143] PGD 0
[ 6.441241] Oops: 0000 [#1] SMP
[ 6.441380] Modules linked in: snd_hda_codec_hdmi x86_pkg_temp_thermal evdev intel_powerclamp snd_hda_codec_realtek iTCO_wdt intel_rapl iTCO_vendor_support snd_hda_codec_generic acpi_cpufreq(-) coretemp kvm_intel kvm crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper psmouse cryptd pcspkr serio_raw snd_hda_intel(+) snd_hda_controller sr_mod sg cdrom radeon(+) snd_hda_codec ttm snd_hwdep drm_kms_helper snd_pcm nuvoton_cir video intel_smartconnect drm rc_core battery tpm_tis i2c_algo_bit tpm i2c_i801 snd_timer ehci_pci ehci_hcd snd i2c_core xhci_hcd mei_me soundcore processor button mei usbcore lpc_ich ie31200_edac usb_common mfd_core edac_core thermal_sys fuse autofs4 btrfs xor raid6_pq dm_mod netconsole configfs sd_mod crc_t10dif crct10dif_generic ahci libahci crct10dif_pclmul crct10dif_common crc32c_intel libata scsi_mod r8169 mii shpchp
[ 6.445512] CPU: 3 PID: 933 Comm: laptop_mode Not tainted 3.17.2.1 #1
[ 6.445564] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./H77 Pro4/MVP, BIOS P1.70 08/07/2013
[ 6.445622] task: ffff8800c4e0ea00 ti: ffff8800c4e40000 task.ti: ffff8800c4e40000
[ 6.445679] RIP: 0010:[<ffffffffa04e08c3>] [<ffffffffa04e08c3>] dce6_bandwidth_update+0x43/0x100 [radeon]
[ 6.445802] RSP: 0018:ffff8800c4e43e40 EFLAGS: 00010246
[ 6.445853] RAX: ffff880419b204b0 RBX: ffff880419b20000 RCX: ffff880419b204e0
[ 6.445905] RDX: 0000000000000000 RSI: 00000000000000c8 RDI: ffff880419b20000
[ 6.445969] RBP: ffff880419b20000 R08: ffff880419b199be R09: 000000000000040e
[ 6.446029] R10: 00000000000186a0 R11: ffff880419b199cc R12: 0000000000000000
[ 6.446080] R13: ffff880419b21750 R14: ffff880419b21060 R15: ffff880419b210e0
[ 6.446133] FS: 00007fa34c15f700(0000) GS:ffff88042f380000(0000) knlGS:0000000000000000
[ 6.446193] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6.446244] CR2: 0000000000000090 CR3: 00000000c4ca9000 CR4: 00000000001407e0
[ 6.446296] Stack:
[ 6.446348] ffff880419b20000 0000000000000000 ffff880419b21728 ffff880419b21750
[ 6.446581] ffff880419b21060 ffff880419b210e0 ffffffffa04b87e4 ffff880419b20000
[ 6.446826] 000000000000000c ffff8800c4daf5e0 ffff88041619e000 ffff880419b21728
[ 6.447066] Call Trace:
[ 6.447131] [<ffffffffa04b87e4>] ? radeon_pm_compute_clocks+0x634/0x8e0 [radeon]
[ 6.447200] [<ffffffffa04b8ffe>] ? radeon_set_dpm_state+0x6e/0xe0 [radeon]
[ 6.447255] [<ffffffff81222f23>] ? kernfs_fop_write+0xe3/0x160
[ 6.447307] [<ffffffff811b0bd2>] ? vfs_write+0xb2/0x1f0
[ 6.447359] [<ffffffff811b1722>] ? SyS_write+0x42/0xa0
[ 6.447412] [<ffffffff81528ec8>] ? page_fault+0x28/0x30
[ 6.447467] [<ffffffff81526e2d>] ? system_call_fastpath+0x1a/0x1f
[ 6.447518] Code: 95 90 20 00 00 85 d2 0f 8e ce 00 00 00 83 ea 01 48 8d 85 b0 04 00 00 45 31 e4 48 8d 8c d5 b8 04 00 00 66 0f 1f 44 00 00 48 8b 10 <80> ba 90 00 00 00 01 41 83 dc ff 48 83 c0 08 48 39 c8 75 e9 48
[ 6.450591] RIP [<ffffffffa04e08c3>] dce6_bandwidth_update+0x43/0x100 [radeon]
[ 6.450709] RSP <ffff8800c4e43e40>
[ 6.450759] CR2: 0000000000000090
[ 6.450826] ---[ end trace 8b1b9f8f098a5ef5 ]---
--
Frederik Himpe <fhimpe@telenet.be>
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