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
Hi Lutz,
just an educated guess, but I think the problem is simply that kernel 3.14 doesn't yet contain the code so that radeon_fence_get() can safely called with a NULL pointer.
So the backport of Nicolai's patch needs and extra check for the case when the fence is NULL.
Regards, Christian.
Am 05.03.2016 um 18:16 schrieb Lutz Euler:
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) # 0x10ae2414: 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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Hi,
On 05.03.2016 16:24, Christian König wrote:
just an educated guess, but I think the problem is simply that kernel 3.14 doesn't yet contain the code so that radeon_fence_get() can safely called with a NULL pointer.
So the backport of Nicolai's patch needs and extra check for the case when the fence is NULL.
Oops indeed. Only the ref call should need the guard, the unref has always had a NULL pointer test as far as I can see.
Lutz, could you please test whether the attached patch on top of 3.14.63 fixes the problem?
Thanks, Nicolai
Regards, Christian.
Am 05.03.2016 um 18:16 schrieb Lutz Euler:
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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Am 08.03.2016 um 03:54 schrieb Nicolai Hähnle:
Hi,
On 05.03.2016 16:24, Christian König wrote:
just an educated guess, but I think the problem is simply that kernel 3.14 doesn't yet contain the code so that radeon_fence_get() can safely called with a NULL pointer.
So the backport of Nicolai's patch needs and extra check for the case when the fence is NULL.
Oops indeed. Only the ref call should need the guard, the unref has always had a NULL pointer test as far as I can see.
Lutz, could you please test whether the attached patch on top of 3.14.63 fixes the problem?
Patch is Reviewed-by: Christian König christian.koenig@amd.com.
Regards, Christian.
Thanks, Nicolai
Regards, Christian.
Am 05.03.2016 um 18:16 schrieb Lutz Euler:
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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Nicolai Hähnle wrote:
Lutz, could you please test whether the attached patch on top of 3.14.63 fixes the problem?
I'd tend to say it does. I am running the patched 3.14.63 since I got the patch and so far no oops occurred, whereas without the patch it took less than 2 hours until it oopsed. So:
Tested-by: Lutz Euler lutz.euler@freenet.de
Thanks for providing the patch so quickly!
Regards,
Lutz
On 08.03.2016 11:54, Nicolai Hähnle wrote:
On 05.03.2016 16:24, Christian König wrote:
just an educated guess, but I think the problem is simply that kernel 3.14 doesn't yet contain the code so that radeon_fence_get() can safely called with a NULL pointer.
So the backport of Nicolai's patch needs and extra check for the case when the fence is NULL.
Oops indeed. Only the ref call should need the guard, the unref has always had a NULL pointer test as far as I can see.
Lutz, could you please test whether the attached patch on top of 3.14.63 fixes the problem?
Nicolai, if you haven't already, please send this patch to stable@vger.kernel.org with an explicit explanation of which stable branches need it.
dri-devel@lists.freedesktop.org
-
Christian König -
lutz.euler＠freenet.de -
Michel Dänzer -
Nicolai Hähnle