Bug in Linux und nun? [erledigt]

[Friam]

Ich benutze Debian Stable mit den Firefox Backports. Mir ist in den letzten Tagen mehrmals der Desktop eingefroren, ich konnte weder die Maus bewegen noch mit "Strg + Alt + F1" auf die Konsole wechseln.
Mir ist folgender Eintrag in journalctl aufgefallen:

Code: Alles auswählen

Apr 09 13:46:24 Io kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
Apr 09 13:46:24 Io kernel: IP: [<ffffffffa068ec3d>] radeon_fence_ref+0xd/0x50 [radeon]
Apr 09 13:46:24 Io kernel: PGD 0 
Apr 09 13:46:24 Io kernel: Oops: 0002 [#1] SMP 
Apr 09 13:46:24 Io kernel: Modules linked in: snd_usb_audio snd_usbmidi_lib snd_rawmidi snd_seq_device x86_pkg_temp_thermal intel_powerclamp intel_rapl coretemp arc4 kvm_int
Apr 09 13:46:24 Io kernel:  sd_mod sr_mod crc_t10dif cdrom crct10dif_generic crct10dif_pclmul crct10dif_common crc32c_intel ahci libahci psmouse libata xhci_hcd ehci_pci ehc
Apr 09 13:46:24 Io kernel: CPU: 1 PID: 593 Comm: Xorg Not tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt25-1
Apr 09 13:46:24 Io kernel: Hardware name: Dell Inc. XPS 8500  /0YJPT1, BIOS A12 08/28/2013
Apr 09 13:46:24 Io kernel: task: ffff880214103630 ti: ffff88021410c000 task.ti: ffff88021410c000
Apr 09 13:46:24 Io kernel: RIP: 0010:[<ffffffffa068ec3d>]  [<ffffffffa068ec3d>] radeon_fence_ref+0xd/0x50 [radeon]
Apr 09 13:46:24 Io kernel: RSP: 0018:ffff88021410fb18  EFLAGS: 00010292
Apr 09 13:46:24 Io kernel: RAX: 0000000000000000 RBX: ffff880212a095f8 RCX: ffff880212a08d08
Apr 09 13:46:24 Io kernel: RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
Apr 09 13:46:24 Io kernel: RBP: ffff880212a09550 R08: ffff880212a08000 R09: 0000000000000000
Apr 09 13:46:24 Io kernel: R10: 0000000000000002 R11: ffff88021410fe08 R12: 0000000000000020
Apr 09 13:46:24 Io kernel: R13: ffff88021410fbe0 R14: ffff88021410fbb0 R15: ffff880212a095f8
Apr 09 13:46:24 Io kernel: FS:  00007f0ddaa6d980(0000) GS:ffff88021ec40000(0000) knlGS:0000000000000000
Apr 09 13:46:24 Io kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr 09 13:46:24 Io kernel: CR2: 0000000000000008 CR3: 000000021411a000 CR4: 00000000001407e0
Apr 09 13:46:24 Io kernel: Stack:
Apr 09 13:46:24 Io kernel:  ffffffffa06ef0bc 00200000000d4300 0000ede000000100 ffff88021410fcd0
Apr 09 13:46:24 Io kernel:  ffff880212a08000 ffff880214103630 ffff880214103630 0000000000000001
Apr 09 13:46:24 Io kernel:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
Apr 09 13:46:24 Io kernel: Call Trace:
Apr 09 13:46:24 Io kernel:  [<ffffffffa06ef0bc>] ? radeon_sa_bo_new+0x25c/0x460 [radeon]
Apr 09 13:46:24 Io kernel:  [<ffffffffa06a3f3e>] ? radeon_ib_get+0x2e/0xd0 [radeon]
Apr 09 13:46:24 Io kernel:  [<ffffffffa06a647c>] ? radeon_cs_ioctl+0x13c/0x730 [radeon]
Apr 09 13:46:24 Io kernel:  [<ffffffffa03ab8b7>] ? drm_ioctl+0x1c7/0x5b0 [drm]
Apr 09 13:46:24 Io kernel:  [<ffffffff81057311>] ? __do_page_fault+0x1d1/0x4f0
Apr 09 13:46:24 Io kernel:  [<ffffffffa0673046>] ? radeon_drm_ioctl+0x46/0x80 [radeon]
Apr 09 13:46:24 Io kernel:  [<ffffffff811bacdf>] ? do_vfs_ioctl+0x2cf/0x4b0
Apr 09 13:46:24 Io kernel:  [<ffffffff811baf41>] ? SyS_ioctl+0x81/0xa0
Apr 09 13:46:24 Io kernel:  [<ffffffff81514a0d>] ? system_call_fast_compare_end+0x10/0x15
Apr 09 13:46:24 Io kernel: Code: e4 48 8b 3b 89 c1 89 ea 48 c7 c6 80 e6 77 a0 31 c0 e8 68 27 d1 e0 eb cb 66 0f 1f 44 00 00 0f 1f 44 00 00 48 89 f8 ba 01 00 00 00 <f0> 0f c1 
Apr 09 13:46:24 Io kernel: RIP  [<ffffffffa068ec3d>] radeon_fence_ref+0xd/0x50 [radeon]
Apr 09 13:46:24 Io kernel:  RSP <ffff88021410fb18>
Apr 09 13:46:24 Io kernel: CR2: 0000000000000008
Apr 09 13:46:24 Io kernel: ---[ end trace 98dffa95f60a56ee ]---
-- Reboot --

Ist der richtige Weg, dies als Bug Debian zu melden?
Sind dafür überhaupt genug Informationen vorhanden?

[rendegast]

Ist ein Patch-bug im kernel 3.16.7-ckt25-1.
War hier auch schon Thema. viewtopic.php?t=159974

Könnte wohl die Tage mit 3.16.7-ckt25-2 abgehandelt werden.
Zwischenzeitlich könntest Du kernel 4.3 / 4.4 jessie-backports verwenden.
(kernel 4.4 hat ein Problem mit der Behandlung älterer Soundkarten (2GB-DMA, CONFIG_ZONE_*),
daher wäre je nach Deinen Gegenheiten mit kein-Sound zu rechnen).

[Friam]

Super, Danke