Hi,
after upgrading from kernel 3.14.62 to 3.14.63, while surfing, the screen suddenly got black and the mouse cursor froze. I had to reset the machine and found an oops followed by repeated messages "BUG: scheduling while atomic: Xorg/3757/0x00000002" in the logs. I have copied the oops and the first of these messages below.
This was repeatable: After the reboot, when the browser restored its tabs, the oops occurred again. I then rebooted into 3.14.62 and the problem didn't occur again.
Just guessing: Of the commits regarding radeon between these two kernel versions might the following be involved
Nicolai Hähnle (1): drm/radeon: hold reference to fences in radeon_sa_bo_new
as it mentions fences and the stack trace starts with radeon_sa_bo_new?
Thanks and Regards,
Lutz
From lspci -v:
05:00.0 VGA compatible controller: ATI Technologies Inc NI Caicos [AMD RADEON HD 6450] (prog-if 00 [VGA controller]) Subsystem: PC Partner Limited Device e164 Flags: bus master, fast devsel, latency 0, IRQ 53 Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at fe9e0000 (64-bit, non-prefetchable) [size=128K] I/O ports at e000 [size=256] Expansion ROM at fe9c0000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Kernel driver in use: radeon Kernel modules: radeon
X.Org version: 1.10.4
decodecode of the oops:
Mar 5 15:04:58 lutz kernel: [ 6995.216776] Code: c7 c6 d8 3e 36 a0 31 c0 45 31 e4 e8 7b 70 15 e1 eb b5 66 0f 1f 84 00 00 00 00 00 55 48 89 f8 ba 01 00 00 00 48 89 e5 48 83 ec 10 <f0> 0f c1 57 08 ff c2 ff ca 7e 02 c9 c3 80 3d 10 ae 10 00 01 74 All code ======== 0: c7 c6 d8 3e 36 a0 mov $0xa0363ed8,%esi 6: 31 c0 xor %eax,%eax 8: 45 31 e4 xor %r12d,%r12d b: e8 7b 70 15 e1 callq 0xffffffffe115708b 10: eb b5 jmp 0xffffffffffffffc7 12: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 19: 00 00 1b: 55 push %rbp 1c: 48 89 f8 mov %rdi,%rax 1f: ba 01 00 00 00 mov $0x1,%edx 24: 48 89 e5 mov %rsp,%rbp 27: 48 83 ec 10 sub $0x10,%rsp 2b:* f0 0f c1 57 08 lock xadd %edx,0x8(%rdi) <-- trapping instruction 30: ff c2 inc %edx 32: ff ca dec %edx 34: 7e 02 jle 0x38 36: c9 leaveq 37: c3 retq 38: 80 3d 10 ae 10 00 01 cmpb $0x1,0x10ae10(%rip) # 0x10ae4f 3f: 74 .byte 0x74
Code starting with the faulting instruction =========================================== 0: f0 0f c1 57 08 lock xadd %edx,0x8(%rdi) 5: ff c2 inc %edx 7: ff ca dec %edx 9: 7e 02 jle 0xd b: c9 leaveq c: c3 retq d: 80 3d 10 ae 10 00 01 cmpb $0x1,0x10ae10(%rip) # 0x10ae24 14: 74 .byte 0x74
Mar 5 15:04:58 lutz kernel: [ 6995.192330] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 Mar 5 15:04:58 lutz kernel: [ 6995.192375] IP: [<ffffffffa02776c0>] radeon_fence_ref+0x10/0x50 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.192441] PGD 22a86a067 PUD 22d8e8067 PMD 0 Mar 5 15:04:58 lutz kernel: [ 6995.192463] Oops: 0002 [#1] PREEMPT SMP Mar 5 15:04:58 lutz kernel: [ 6995.192484] Modules linked in: binfmt_misc parport_pc ppdev snd_hda_codec_hdmi snd_opl3_synth snd_seq_midi_emul snd_hda_intel snd_hda_codec snd_es1938 gameport snd_pcm_oss snd_mixer_oss snd_seq_dummy snd_pcm snd_seq_oss snd_opl3_lib snd_hwdep snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq psmouse fbcon tileblit edac_core font serio_raw i2c_piix4 bitblit softcursor radeon snd_seq_device snd_timer hwmon_vid ttm drm_kms_helper asus_atk0110 drm i2c_algo_bit snd soundcore lp parport usbhid btrfs raid6_pq zlib_deflate xor r8169 mii xhci_hcd libcrc32c Mar 5 15:04:58 lutz kernel: [ 6995.192741] CPU: 5 PID: 3757 Comm: Xorg Not tainted 3.14.63 #1 Mar 5 15:04:58 lutz kernel: [ 6995.192765] Hardware name: System manufacturer System Product Name/M4A87TD/USB3, BIOS 1202 02/17/2011 Mar 5 15:04:58 lutz kernel: [ 6995.192803] task: ffff88022c1d5f80 ti: ffff8800c42a6000 task.ti: ffff8800c42a6000 Mar 5 15:04:58 lutz kernel: [ 6995.192833] RIP: 0010:[<ffffffffa02776c0>] [<ffffffffa02776c0>] radeon_fence_ref+0x10/0x50 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.192881] RSP: 0018:ffff8800c42a7a68 EFLAGS: 00010282 Mar 5 15:04:58 lutz kernel: [ 6995.192903] RAX: 0000000000000000 RBX: ffff8800c5d61328 RCX: 0000000000000000 Mar 5 15:04:58 lutz kernel: [ 6995.192931] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000 Mar 5 15:04:58 lutz kernel: [ 6995.192960] RBP: ffff8800c42a7a78 R08: ffff8800c5d60000 R09: 0000000000000000 Mar 5 15:04:58 lutz kernel: [ 6995.192988] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000100 Mar 5 15:04:58 lutz kernel: [ 6995.193016] R13: ffff8800c5d613b0 R14: ffff8800c42a7ae8 R15: ffff8800c42a7b08 Mar 5 15:04:58 lutz kernel: [ 6995.193045] FS: 00007f7ebe91d8a0(0000) GS:ffff880237d40000(0000) knlGS:0000000000000000 Mar 5 15:04:58 lutz kernel: [ 6995.193076] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Mar 5 15:04:58 lutz kernel: [ 6995.193100] CR2: 0000000000000008 CR3: 000000022de3e000 CR4: 00000000000007e0 Mar 5 15:04:58 lutz kernel: [ 6995.193128] Stack: Mar 5 15:04:58 lutz kernel: [ 6995.193137] ffff880159dcef00 ffff8800c5d61328 ffff8800c42a7b88 ffffffffa02d9f22 Mar 5 15:04:58 lutz kernel: [ 6995.193170] 01ff8800c42a7a98 ffff8800c5d60000 ffff8800c42a7b08 ffff8800c42a7c88 Mar 5 15:04:58 lutz kernel: [ 6995.193203] 0000f00455ee5200 ffff8800c5d613b0 00000100c42a7b08 0006e97800200000 Mar 5 15:04:58 lutz kernel: [ 6995.193237] Call Trace: Mar 5 15:04:58 lutz kernel: [ 6995.194709] [<ffffffffa02d9f22>] radeon_sa_bo_new+0x302/0x590 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.196175] [<ffffffff811551e6>] ? __kmalloc+0x66/0x1d0 Mar 5 15:04:58 lutz kernel: [ 6995.197659] [<ffffffffa028f849>] ? copy_from_user+0x9/0x10 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.199160] [<ffffffffa028dcb3>] radeon_ib_get+0x43/0xe0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.200655] [<ffffffffa0290111>] radeon_cs_ioctl+0x201/0xac0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.202135] [<ffffffff812ffe52>] ? idr_mark_full+0x52/0x70 Mar 5 15:04:58 lutz kernel: [ 6995.203620] [<ffffffffa01b6b31>] drm_ioctl+0x401/0x580 [drm] Mar 5 15:04:58 lutz kernel: [ 6995.205094] [<ffffffffa028ff10>] ? radeon_cs_parser_init+0x470/0x470 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.206564] [<ffffffff816572dc>] ? __do_page_fault+0x1cc/0x560 Mar 5 15:04:58 lutz kernel: [ 6995.208033] [<ffffffffa025e349>] radeon_drm_ioctl+0x9/0x10 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.209510] [<ffffffff8116fe21>] do_vfs_ioctl+0x81/0x4d0 Mar 5 15:04:58 lutz kernel: [ 6995.210975] [<ffffffff81137f29>] ? SyS_mmap_pgoff+0xd9/0x210 Mar 5 15:04:58 lutz kernel: [ 6995.212432] [<ffffffff81170301>] SyS_ioctl+0x91/0xa0 Mar 5 15:04:58 lutz kernel: [ 6995.213874] [<ffffffff8165767c>] ? do_page_fault+0xc/0x10 Mar 5 15:04:58 lutz kernel: [ 6995.215323] [<ffffffff8165b542>] system_call_fastpath+0x16/0x1b Mar 5 15:04:58 lutz kernel: [ 6995.216776] Code: c7 c6 d8 3e 36 a0 31 c0 45 31 e4 e8 7b 70 15 e1 eb b5 66 0f 1f 84 00 00 00 00 00 55 48 89 f8 ba 01 00 00 00 48 89 e5 48 83 ec 10 <f0> 0f c1 57 08 ff c2 ff ca 7e 02 c9 c3 80 3d 10 ae 10 00 01 74 Mar 5 15:04:58 lutz kernel: [ 6995.218402] RIP [<ffffffffa02776c0>] radeon_fence_ref+0x10/0x50 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.219987] RSP <ffff8800c42a7a68> Mar 5 15:04:58 lutz kernel: [ 6995.221568] CR2: 0000000000000008 Mar 5 15:04:58 lutz kernel: [ 6995.234168] ---[ end trace 37c0545f39a2b3e5 ]---
Mar 5 15:04:58 lutz kernel: [ 6995.234170] note: Xorg[3757] exited with preempt_count 1 Mar 5 15:04:58 lutz kernel: [ 6995.239926] BUG: scheduling while atomic: Xorg/3757/0x00000002 Mar 5 15:04:58 lutz kernel: [ 6995.239931] Modules linked in: binfmt_misc parport_pc ppdev snd_hda_codec_hdmi snd_opl3_synth snd_seq_midi_emul snd_hda_intel snd_hda_c odec snd_es1938 gameport snd_pcm_oss snd_mixer_oss snd_seq_dummy snd_pcm snd_seq_oss snd_opl3_lib snd_hwdep snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq psmouse fbcon tileblit edac_core font serio_raw i2c_piix4 bitblit softcursor radeon snd_seq_device snd_timer hwmon_vid ttm drm_kms_helper asus_atk0110 drm i2c _algo_bit snd soundcore lp parport usbhid btrfs raid6_pq zlib_deflate xor r8169 mii xhci_hcd libcrc32c Mar 5 15:04:58 lutz kernel: [ 6995.239960] CPU: 5 PID: 3757 Comm: Xorg Tainted: G D 3.14.63 #1 Mar 5 15:04:58 lutz kernel: [ 6995.239961] Hardware name: System manufacturer System Product Name/M4A87TD/USB3, BIOS 1202 02/17/2011 Mar 5 15:04:58 lutz kernel: [ 6995.239963] 0000000000000000 ffff8800c42a7078 ffffffff8164f89c ffff880237d518c0 Mar 5 15:04:58 lutz kernel: [ 6995.239965] 0000000000000005 ffff8800c42a7088 ffffffff81075d27 ffff8800c42a70f8 Mar 5 15:04:58 lutz kernel: [ 6995.239967] ffffffff81650680 ffff8800c42a7184 ffff88022c1d5f80 ffff8800c42a6000 Mar 5 15:04:58 lutz kernel: [ 6995.239969] Call Trace: Mar 5 15:04:58 lutz kernel: [ 6995.239976] [<ffffffff8164f89c>] dump_stack+0x4f/0x6b Mar 5 15:04:58 lutz kernel: [ 6995.239980] [<ffffffff81075d27>] __schedule_bug+0x47/0x60 Mar 5 15:04:58 lutz kernel: [ 6995.239982] [<ffffffff81650680>] __schedule+0x600/0x810 Mar 5 15:04:58 lutz kernel: [ 6995.239984] [<ffffffff81650984>] schedule+0x24/0x70 Mar 5 15:04:58 lutz kernel: [ 6995.239986] [<ffffffff8164fa11>] schedule_timeout+0x151/0x320 Mar 5 15:04:58 lutz kernel: [ 6995.239989] [<ffffffff81056b60>] ? call_timer_fn+0x1a0/0x1a0 Mar 5 15:04:58 lutz kernel: [ 6995.240028] [<ffffffffa027713a>] radeon_fence_wait_seq+0x3ca/0x530 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240043] [<ffffffffa02c1740>] ? evergreen_program_watermarks+0x150/0x670 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240046] [<ffffffff8108a210>] ? bit_waitqueue+0xd0/0xd0 Mar 5 15:04:58 lutz kernel: [ 6995.240062] [<ffffffffa02c004b>] ? evergreen_line_buffer_adjust.clone.5+0xcb/0x1a0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240073] [<ffffffffa0277680>] radeon_fence_wait_empty_locked+0xb0/0xe0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240088] [<ffffffffa02bb83d>] radeon_pm_compute_clocks+0x59d/0x840 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240100] [<ffffffffa026a69f>] atombios_crtc_dpms+0x6f/0x100 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240111] [<ffffffffa026bc08>] atombios_crtc_disable+0x28/0x2f0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240126] [<ffffffffa02d8844>] ? radeon_atom_encoder_dpms+0xf4/0x230 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240132] [<ffffffffa021b305>] drm_helper_disable_unused_functions+0x105/0x160 [drm_kms_helper] Mar 5 15:04:58 lutz kernel: [ 6995.240135] [<ffffffffa021c610>] drm_crtc_helper_set_config+0x130/0x970 [drm_kms_helper] Mar 5 15:04:58 lutz kernel: [ 6995.240138] [<ffffffff81155962>] ? __slab_free+0x302/0x480 Mar 5 15:04:58 lutz kernel: [ 6995.240151] [<ffffffffa0285061>] radeon_crtc_set_config+0x31/0xb0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240172] [<ffffffffa01c16ac>] drm_mode_set_config_internal+0x5c/0xe0 [drm] Mar 5 15:04:58 lutz kernel: [ 6995.240180] [<ffffffffa01c30bd>] drm_framebuffer_remove+0x10d/0x160 [drm] Mar 5 15:04:58 lutz kernel: [ 6995.240188] [<ffffffffa01c6605>] drm_fb_release+0xa5/0xd0 [drm] Mar 5 15:04:58 lutz kernel: [ 6995.240195] [<ffffffffa01b7e18>] drm_release+0x548/0x5c0 [drm] Mar 5 15:04:58 lutz kernel: [ 6995.240198] [<ffffffff8115f5a4>] __fput+0xa4/0x220 Mar 5 15:04:58 lutz kernel: [ 6995.240199] [<ffffffff8115f769>] ____fput+0x9/0x10 Mar 5 15:04:58 lutz kernel: [ 6995.240202] [<ffffffff8106a80c>] task_work_run+0xac/0xd0 Mar 5 15:04:58 lutz kernel: [ 6995.240205] [<ffffffff8104dc30>] do_exit+0x2c0/0xac0 Mar 5 15:04:58 lutz kernel: [ 6995.240207] [<ffffffff8164f77b>] ? printk+0x48/0x4a Mar 5 15:04:58 lutz kernel: [ 6995.240209] [<ffffffff8109bc29>] ? kmsg_dump+0xb9/0xd0 Mar 5 15:04:58 lutz kernel: [ 6995.240211] [<ffffffff8165553a>] oops_end+0x9a/0xe0 Mar 5 15:04:58 lutz kernel: [ 6995.240214] [<ffffffff8103ee32>] no_context+0x132/0x2e0 Mar 5 15:04:58 lutz kernel: [ 6995.240216] [<ffffffff8103f0f5>] __bad_area_nosemaphore+0x115/0x210 Mar 5 15:04:58 lutz kernel: [ 6995.240218] [<ffffffff811136d1>] ? __alloc_pages_nodemask+0x141/0x910 Mar 5 15:04:58 lutz kernel: [ 6995.240220] [<ffffffff8103f1fe>] bad_area_nosemaphore+0xe/0x10 Mar 5 15:04:58 lutz kernel: [ 6995.240222] [<ffffffff81657442>] __do_page_fault+0x332/0x560 Mar 5 15:04:58 lutz kernel: [ 6995.240230] [<ffffffffa022b8bb>] ? ttm_mem_global_alloc_zone.clone.1+0x12b/0x150 [ttm] Mar 5 15:04:58 lutz kernel: [ 6995.240233] [<ffffffffa022bc12>] ? ttm_mem_global_alloc_page+0x42/0x50 [ttm] Mar 5 15:04:58 lutz kernel: [ 6995.240237] [<ffffffff8114dd3e>] ? alloc_pages_current+0xae/0x170 Mar 5 15:04:58 lutz kernel: [ 6995.240238] [<ffffffff8165767c>] do_page_fault+0xc/0x10 Mar 5 15:04:58 lutz kernel: [ 6995.240240] [<ffffffff816549d2>] page_fault+0x22/0x30 Mar 5 15:04:58 lutz kernel: [ 6995.240252] [<ffffffffa02776c0>] ? radeon_fence_ref+0x10/0x50 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240268] [<ffffffffa02d9f22>] radeon_sa_bo_new+0x302/0x590 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240270] [<ffffffff811551e6>] ? __kmalloc+0x66/0x1d0 Mar 5 15:04:58 lutz kernel: [ 6995.240283] [<ffffffffa028f849>] ? copy_from_user+0x9/0x10 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240296] [<ffffffffa028dcb3>] radeon_ib_get+0x43/0xe0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240309] [<ffffffffa0290111>] radeon_cs_ioctl+0x201/0xac0 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240312] [<ffffffff812ffe52>] ? idr_mark_full+0x52/0x70 Mar 5 15:04:58 lutz kernel: [ 6995.240320] [<ffffffffa01b6b31>] drm_ioctl+0x401/0x580 [drm] Mar 5 15:04:58 lutz kernel: [ 6995.240333] [<ffffffffa028ff10>] ? radeon_cs_parser_init+0x470/0x470 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240335] [<ffffffff816572dc>] ? __do_page_fault+0x1cc/0x560 Mar 5 15:04:58 lutz kernel: [ 6995.240346] [<ffffffffa025e349>] radeon_drm_ioctl+0x9/0x10 [radeon] Mar 5 15:04:58 lutz kernel: [ 6995.240348] [<ffffffff8116fe21>] do_vfs_ioctl+0x81/0x4d0 Mar 5 15:04:58 lutz kernel: [ 6995.240351] [<ffffffff81137f29>] ? SyS_mmap_pgoff+0xd9/0x210 Mar 5 15:04:58 lutz kernel: [ 6995.240353] [<ffffffff81170301>] SyS_ioctl+0x91/0xa0 Mar 5 15:04:58 lutz kernel: [ 6995.240355] [<ffffffff8165767c>] ? do_page_fault+0xc/0x10 Mar 5 15:04:58 lutz kernel: [ 6995.240357] [<ffffffff8165b542>] system_call_fastpath+0x16/0x1b