https://bugzilla.kernel.org/show_bug.cgi?id=199115 Bug ID: 199115 Summary: [gma500] BUG: unable to handle kernel NULL pointer dereference at 0000000000000081 Product: Drivers Version: 2.5 Kernel Version: 4.15.7-300.fc27.x86_64 Hardware: x86-64 OS: Linux Tree: Fedora Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: dominik@xxxxxxxxxxxxxx Regression: No Created attachment 274725 --> https://bugzilla.kernel.org/attachment.cgi?id=274725&action=edit journalctl -k --no-hostname --no-pager output I'm consistently getting this kernel NULL pointer dereference on a Thecus N5550 NAS box (Intel Atom D2550 CPU) on every boot if gma500_gfx module is not blacklisted: Mar 14 13:44:02 kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000081 Mar 14 13:44:02 kernel: IP: drm_fb_helper_is_bound.isra.16+0x5/0xa0 [drm_kms_helper] Mar 14 13:44:03 kernel: PGD 0 P4D 0 Mar 14 13:44:03 kernel: Oops: 0000 [#1] SMP NOPTI Mar 14 13:44:03 kernel: Modules linked in: it87 hwmon_vid vfat fat snd_hda_codec_realtek snd_hda_codec_generic gma500_gfx snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support snd Mar 14 13:44:03 kernel: CPU: 0 PID: 277 Comm: kworker/0:2 Not tainted 4.15.7-300.fc27.x86_64 #1 Mar 14 13:44:03 kernel: Hardware name: Intel Corporation Milstead Platform/Granite Well, BIOS CDV_T30 X64 09/17/2012 Mar 14 13:44:03 kernel: Workqueue: events output_poll_execute [drm_kms_helper] Mar 14 13:44:03 kernel: RIP: 0010:drm_fb_helper_is_bound.isra.16+0x5/0xa0 [drm_kms_helper] Mar 14 13:44:03 kernel: RSP: 0018:ffffb118005ebe28 EFLAGS: 00010286 Mar 14 13:44:03 kernel: RAX: 0000000000000000 RBX: ffff9da9b656c800 RCX: 000000000000e800 Mar 14 13:44:03 kernel: RDX: ffff9da9b632da00 RSI: 0000000000000031 RDI: ffff9da9b656c800 Mar 14 13:44:03 kernel: RBP: ffff9da9b656c8d0 R08: 00000000000251a0 R09: 0000000000000000 Mar 14 13:44:03 kernel: R10: fffff2ca40f61c00 R11: 0000000000000000 R12: 0000000000000001 Mar 14 13:44:03 kernel: R13: ffff9da9b71e7800 R14: ffff9da9b71e79f8 R15: 0000000000000000 Mar 14 13:44:03 kernel: FS: 0000000000000000(0000) GS:ffff9da9bb400000(0000) knlGS:0000000000000000 Mar 14 13:44:03 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Mar 14 13:44:03 kernel: CR2: 0000000000000081 CR3: 000000007b2a0000 CR4: 00000000000006f0 Mar 14 13:44:03 kernel: Call Trace: Mar 14 13:44:03 kernel: drm_fb_helper_hotplug_event.part.29+0x34/0xb0 [drm_kms_helper] Mar 14 13:44:03 kernel: output_poll_execute+0x185/0x1b0 [drm_kms_helper] Mar 14 13:44:03 kernel: process_one_work+0x175/0x390 Mar 14 13:44:03 kernel: worker_thread+0x2e/0x380 Mar 14 13:44:03 kernel: ? process_one_work+0x390/0x390 Mar 14 13:44:03 kernel: kthread+0x113/0x130 Mar 14 13:44:03 kernel: ? kthread_create_worker_on_cpu+0x70/0x70 Mar 14 13:44:03 kernel: ret_from_fork+0x1f/0x40 Mar 14 13:44:03 kernel: Code: 4c d0 f8 8b 45 20 39 c3 7c e6 83 e8 01 4c 89 ef 31 db 89 45 20 e8 6c b0 ea c4 eb 9f 83 c3 02 eb bf 0f 1f 44 00 00 0f 1f 44 00 00 <48> 8b 56 50 Mar 14 13:44:03 kernel: RIP: drm_fb_helper_is_bound.isra.16+0x5/0xa0 [drm_kms_helper] RSP: ffffb118005ebe28 Mar 14 13:44:03 kernel: CR2: 0000000000000081 Mar 14 13:44:03 kernel: ---[ end trace 0bc03676f9e43f5d ]--- Full dmesg attached. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
