https://bugzilla.kernel.org/show_bug.cgi?id=212425
Bug ID: 212425 Summary: Kernel warning at drivers/gpu/drm/ttm/ttm_bo.c:517 Product: Drivers Version: 2.5 Kernel Version: 5.11.9 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: custos.mentis@gmail.com Regression: No
After installing today's release of kernel 5.11.9 I am getting a bunch of kernel warnings like:
[ 70.902471] WARNING: CPU: 6 PID: 2147 at drivers/gpu/drm/ttm/ttm_bo.c:517 ttm_bo_release+0x2b1/0x300 [ 70.902481] Modules linked in: nls_iso8859_2 nls_cp852 vfat fat uinput ipt_REJECT nf_reject_ipv4 iptable_filter ip_tables ip6t_REJECT nf_reject_ipv6 xt_tcpudp xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6table_filter ip6_tables x_tables kvm_amd kvm pcspkr irqbypass sp5100_tco snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer lm92 lm63 it87 hwmon_vid fam15h_power nfsd k10temp auth_rpcgss fuse oid_registry lockd grace hid_logitech_hidpp hid_logitech_dj hid_generic sr_mod cdrom sd_mod megaraid_sas 8250 8250_base serial_core usbhid sunrpc dm_mod dax [ 70.902541] CPU: 6 PID: 2147 Comm: kmail Tainted: G W 5.11.9-acrux #9 [ 70.902554] Hardware name: To be filled by O.E.M. To be filled by O.E.M./SABERTOOTH 990FX R2.0, BIOS 2901 05/04/2016 [ 70.902556] RIP: 0010:ttm_bo_release+0x2b1/0x300 [ 70.902559] Code: e8 74 2b 2f 00 e9 d9 fd ff ff 48 8b 7d 88 b9 30 75 00 00 31 d2 be 01 00 00 00 e8 3a 52 2f 00 48 8b 45 d8 eb 9d 4c 89 e0 eb 98 <0f> 0b c7 85 9c 00 00 00 00 00 00 00 4c 89 ef e8 4b f2 ff ff 48 8d [ 70.902561] RSP: 0018:ffffaf4a83313bb8 EFLAGS: 00010202 [ 70.902566] RAX: 0000000000000001 RBX: ffff961b7553c500 RCX: 0000000000000008 [ 70.902568] RDX: 0000000000000001 RSI: 0000000000000246 RDI: ffffffffa1db5248 [ 70.902570] RBP: ffff961b7553c570 R08: ffff961ba14f7a38 R09: ffff9621dedaa3f8 [ 70.902571] R10: ffff961ac60c1250 R11: ffff961ac60c1240 R12: ffff961ac5fe5588 [ 70.902572] R13: ffff961b7553c400 R14: 0000000000000000 R15: ffff961ac5fe5f48 [ 70.902573] FS: 00007ff78c2f5f00(0000) GS:ffff9621ded80000(0000) knlGS:0000000000000000 [ 70.902575] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.902576] CR2: 00007ff691820000 CR3: 0000000203d5d000 CR4: 00000000000406e0 [ 70.902578] Call Trace: [ 70.902580] ttm_bo_move_accel_cleanup+0x19d/0x398 [ 70.902583] amdgpu_bo_move+0x15c/0x698 [ 70.902586] ? amdgpu_vram_mgr_new+0x373/0x3d8 [ 70.902587] ttm_bo_handle_move_mem+0x8c/0x170 [ 70.902590] ttm_bo_validate+0x147/0x178 [ 70.902592] amdgpu_bo_fault_reserve_notify+0xbf/0x148 [ 70.902594] amdgpu_ttm_fault+0x33/0x80 [ 70.902596] __do_fault+0x33/0x90 [ 70.902599] handle_mm_fault+0xdff/0x1498 [ 70.902601] exc_page_fault+0x1a5/0x500 [ 70.902604] ? exit_to_user_mode_prepare+0x5d/0x118 [ 70.902607] ? asm_exc_page_fault+0x8/0x30 [ 70.902609] asm_exc_page_fault+0x1e/0x30 [ 70.902611] RIP: 0033:0x7ff78d8f290d [ 70.902612] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 6f 46 bc f3 0f 6f 4e cc 4c 8b 4e dc 4c 8b 56 e4 4c 8b 5e ec 48 8b 4e f4 8b 56 fc <f3> 0f 7f 47 bc f3 0f 7f 4f cc 4c 89 4f dc 4c 89 57 e4 4c 89 5f ec [ 70.902614] RSP: 002b:00007ffdbd5bb838 EFLAGS: 00010207 [ 70.902616] RAX: 00007ff691820000 RBX: 0000000000000044 RCX: 3f80000000000000 [ 70.902617] RDX: 0000000000000000 RSI: 000055d1049acad4 RDI: 00007ff691820044 [ 70.902618] RBP: 000055d1049aca90 R08: 000055d103fd9a30 R09: 0000000000000000 [ 70.902619] R10: 000000003f800000 R11: 3f800000bf800000 R12: 0000000000000000 [ 70.902620] R13: 000055d103f58320 R14: 0000000000000000 R15: 0000000000000044
Apparently the warnings show after commit 7d09e9725b5dcc8d14e101de931e4969d033a6ad, which explains that the warning is triggered by "very likely a driver bug".