https://bugzilla.kernel.org/show_bug.cgi?id=206987 krakopo@xxxxxxxxxxxxxx changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |krakopo@xxxxxxxxxxxxxx --- Comment #33 from krakopo@xxxxxxxxxxxxxx --- I'm seeing this on an AMD Ryzen 4500U laptop running 5.8.1 (Arch Linux 5.8.1-arch1-1). I can repro fairly consistently when running a 64-bit KVM virtual machine. The kernel I'm running has the commit which should resolve this: 7ad816762f9b ("x86/fpu: Reset MXCSR to default in kernel_fpu_begin()") Confirmed patch is in my kernel: https://git.archlinux.org/linux.git/tree/arch/x86/kernel/fpu/core.c?h=v5.8.1-arch1#n106 Here is what I see in dmesg: Aug 18 20:25:49 archpad kernel: simd exception: 0000 [#1] PREEMPT SMP NOPTI Aug 18 20:25:49 archpad kernel: CPU: 0 PID: 509 Comm: Xorg Not tainted 5.8.1-arch1-1 #1 Aug 18 20:25:49 archpad kernel: Hardware name: LENOVO 81W4/LNVNB161216, BIOS DZCN19WW 04/13/2020 Aug 18 20:25:49 archpad kernel: RIP: 0010:dcn_bw_ceil2+0x35/0x60 [amdgpu] Aug 18 20:25:49 archpad kernel: Code: cd 7b 3e 0f 28 d0 66 0f ef db 66 0f ef e4 f3 0f 5e d1 f3 0f 5a e0 f3 0f 2c c2 66 0f ef d2 f3 0f 2a d0 f3 0f 59 d1 f3 0f 5a da <f2> 0f 58 1d 5b 19 2e 00 66 0f 2f dc 72 01 c3 f3 0f 58 ca 0f 28 c1 Aug 18 20:25:49 archpad kernel: RSP: 0018:ffffb8fac07035f8 EFLAGS: 00010202 Aug 18 20:25:49 archpad kernel: RAX: 0000000000000004 RBX: 0000000000000000 RCX: 0000000000000780 Aug 18 20:25:49 archpad kernel: RDX: ffff97ebd0a63080 RSI: ffff97ebd0a69560 RDI: 0000000044444440 Aug 18 20:25:49 archpad kernel: RBP: ffff97ebd0a631c0 R08: ffff97ebd0a633b4 R09: 0000000000000000 Aug 18 20:25:49 archpad kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff97ebd0a63360 Aug 18 20:25:49 archpad kernel: R13: 0000000000000001 R14: ffff97ebd0a62188 R15: ffff97ebd0a62028 Aug 18 20:25:49 archpad kernel: FS: 00007f8787a65940(0000) GS:ffff97ec47400000(0000) knlGS:0000000000000000 Aug 18 20:25:49 archpad kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Aug 18 20:25:49 archpad kernel: CR2: 0000000800880000 CR3: 00000001f9040000 CR4: 0000000000340ef0 Aug 18 20:25:49 archpad kernel: Call Trace: Aug 18 20:25:49 archpad kernel: dml21_ModeSupportAndSystemConfigurationFull+0x437/0x5cf0 [amdgpu] Aug 18 20:25:49 archpad kernel: ? sysvec_apic_timer_interrupt+0x46/0xe0 Aug 18 20:25:49 archpad kernel: ? asm_sysvec_apic_timer_interrupt+0x12/0x20 Aug 18 20:25:49 archpad kernel: ? sched_clock+0x5/0x10 Aug 18 20:25:49 archpad kernel: ? sched_clock_local+0x12/0x80 Aug 18 20:25:49 archpad kernel: ? amdgpu_sa_bo_new+0xbc/0x550 [amdgpu] Aug 18 20:25:49 archpad kernel: ? sched_clock_cpu+0xae/0xd0 Aug 18 20:25:49 archpad kernel: ? kmem_cache_alloc_trace+0x17c/0x220 Aug 18 20:25:49 archpad kernel: ? amdgpu_sa_bo_new+0xbc/0x550 [amdgpu] Aug 18 20:25:49 archpad kernel: ? _raw_spin_unlock+0x16/0x30 Aug 18 20:25:49 archpad kernel: ? preempt_count_add+0x49/0xa0 Aug 18 20:25:49 archpad kernel: ? kernel_init_free_pages+0x6d/0x90 Aug 18 20:25:49 archpad kernel: ? prep_new_page+0xa2/0xb0 Aug 18 20:25:49 archpad kernel: ? get_page_from_freelist+0xfa8/0x1220 Aug 18 20:25:49 archpad kernel: ? __mod_zone_page_state+0x66/0xa0 Aug 18 20:25:49 archpad kernel: ? hubbub2_get_dcc_compression_cap+0xa8/0x270 [amdgpu] Aug 18 20:25:49 archpad kernel: ? fill_plane_buffer_attributes+0x26f/0x420 [amdgpu] Aug 18 20:25:49 archpad kernel: dml_get_voltage_level+0x116/0x1e0 [amdgpu] Aug 18 20:25:49 archpad kernel: dcn20_fast_validate_bw+0x359/0x680 [amdgpu] Aug 18 20:25:49 archpad kernel: ? resource_build_scaling_params+0xc44/0x11a0 [amdgpu] Aug 18 20:25:49 archpad kernel: dcn21_validate_bandwidth+0xcd/0x2a0 [amdgpu] Aug 18 20:25:49 archpad kernel: dc_validate_global_state+0x2f2/0x390 [amdgpu] Aug 18 20:25:49 archpad kernel: amdgpu_dm_atomic_check+0xefb/0x1010 [amdgpu] Aug 18 20:25:49 archpad kernel: drm_atomic_check_only+0x57c/0x7f0 [drm] Aug 18 20:25:49 archpad kernel: ? __drm_atomic_helper_crtc_duplicate_state+0x85/0xd0 [drm_kms_helper] Aug 18 20:25:49 archpad kernel: drm_atomic_commit+0x13/0x50 [drm] Aug 18 20:25:49 archpad kernel: drm_atomic_helper_legacy_gamma_set+0x123/0x180 [drm_kms_helper] Aug 18 20:25:49 archpad kernel: drm_mode_gamma_set_ioctl+0x19a/0x230 [drm] Aug 18 20:25:49 archpad kernel: ? drm_color_lut_check+0xa0/0xa0 [drm] Aug 18 20:25:49 archpad kernel: drm_ioctl_kernel+0xb2/0x100 [drm] Aug 18 20:25:49 archpad kernel: drm_ioctl+0x208/0x360 [drm] Aug 18 20:25:49 archpad kernel: ? drm_color_lut_check+0xa0/0xa0 [drm] Aug 18 20:25:49 archpad kernel: amdgpu_drm_ioctl+0x49/0x80 [amdgpu] Aug 18 20:25:49 archpad kernel: ksys_ioctl+0x82/0xc0 Aug 18 20:25:49 archpad kernel: __x64_sys_ioctl+0x16/0x20 Aug 18 20:25:49 archpad kernel: do_syscall_64+0x44/0x70 Aug 18 20:25:49 archpad kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9 Aug 18 20:25:49 archpad kernel: RIP: 0033:0x7f87887888eb Aug 18 20:25:49 archpad kernel: Code: 0f 1e fa 48 8b 05 a5 95 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 75 95 0c 00 f7 d8 64 89 01 48 Aug 18 20:25:49 archpad kernel: RSP: 002b:00007ffc92f3a9a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Aug 18 20:25:49 archpad kernel: RAX: ffffffffffffffda RBX: 00007ffc92f3a9e0 RCX: 00007f87887888eb Aug 18 20:25:49 archpad kernel: RDX: 00007ffc92f3a9e0 RSI: 00000000c02064a5 RDI: 000000000000000a Aug 18 20:25:49 archpad kernel: RBP: 00000000c02064a5 R08: 00005627eb36eb10 R09: 00005627eb36ed10 Aug 18 20:25:49 archpad kernel: R10: 00005627eb36e910 R11: 0000000000000246 R12: 0000000000000100 Aug 18 20:25:49 archpad kernel: R13: 000000000000000a R14: 0000000000000100 R15: 0000000000000100 Aug 18 20:25:49 archpad kernel: Modules linked in: xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle ip6table_nat iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c tun bridge hid_multitouch hid_generic 8021q garp mrp stp llc ebtable_filter ebtables snd_acp3x_rn snd_soc_dmic snd_acp3x_pdm_dma snd_soc_c> Aug 18 20:25:49 archpad kernel: drm_kms_helper btintel snd_hwdep i2c_hid hid videobuf2_common cec nls_iso8859_1 snd_pcm rc_core nls_cp437 bluetooth cfg80211 snd_timer syscopyarea videodev ideapad_laptop snd_rn_pci_acp3x sysfillrect vfat ecdh_generic snd sysimgblt tpm_crb snd_pci_acp3x sparse_keymap fat ecc mc fb_sys_fops tpm_tis soundcore ccp rfkill libarc4 wmi battery tpm_tis> Aug 18 20:25:49 archpad kernel: ---[ end trace 76f111d732bc1b57 ]--- Aug 18 20:25:49 archpad kernel: RIP: 0010:dcn_bw_ceil2+0x35/0x60 [amdgpu] Aug 18 20:25:49 archpad kernel: Code: cd 7b 3e 0f 28 d0 66 0f ef db 66 0f ef e4 f3 0f 5e d1 f3 0f 5a e0 f3 0f 2c c2 66 0f ef d2 f3 0f 2a d0 f3 0f 59 d1 f3 0f 5a da <f2> 0f 58 1d 5b 19 2e 00 66 0f 2f dc 72 01 c3 f3 0f 58 ca 0f 28 c1 Aug 18 20:25:49 archpad kernel: RSP: 0018:ffffb8fac07035f8 EFLAGS: 00010202 Aug 18 20:25:49 archpad kernel: RAX: 0000000000000004 RBX: 0000000000000000 RCX: 0000000000000780 Aug 18 20:25:49 archpad kernel: RDX: ffff97ebd0a63080 RSI: ffff97ebd0a69560 RDI: 0000000044444440 Aug 18 20:25:49 archpad kernel: RBP: ffff97ebd0a631c0 R08: ffff97ebd0a633b4 R09: 0000000000000000 Aug 18 20:25:49 archpad kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff97ebd0a63360 Aug 18 20:25:49 archpad kernel: R13: 0000000000000001 R14: ffff97ebd0a62188 R15: ffff97ebd0a62028 Aug 18 20:25:49 archpad kernel: FS: 00007f8787a65940(0000) GS:ffff97ec47400000(0000) knlGS:0000000000000000 Aug 18 20:25:49 archpad kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Aug 18 20:25:49 archpad kernel: CR2: 0000000800880000 CR3: 00000001f9040000 CR4: 0000000000340ef0 $ objdump -d amdgpu.ko ... 00000000001b83c0 <dcn_bw_ceil2>: 1b83c0: e8 00 00 00 00 callq 1b83c5 <dcn_bw_ceil2+0x5> 1b83c5: 66 0f ef ed pxor %xmm5,%xmm5 1b83c9: 0f 2e cd ucomiss %xmm5,%xmm1 1b83cc: 7b 3e jnp 1b840c <dcn_bw_ceil2+0x4c> 1b83ce: 0f 28 d0 movaps %xmm0,%xmm2 1b83d1: 66 0f ef db pxor %xmm3,%xmm3 1b83d5: 66 0f ef e4 pxor %xmm4,%xmm4 1b83d9: f3 0f 5e d1 divss %xmm1,%xmm2 1b83dd: f3 0f 5a e0 cvtss2sd %xmm0,%xmm4 1b83e1: f3 0f 2c c2 cvttss2si %xmm2,%eax 1b83e5: 66 0f ef d2 pxor %xmm2,%xmm2 1b83e9: f3 0f 2a d0 cvtsi2ss %eax,%xmm2 1b83ed: f3 0f 59 d1 mulss %xmm1,%xmm2 1b83f1: f3 0f 5a da cvtss2sd %xmm2,%xmm3 1b83f5: f2 0f 58 1d 00 00 00 addsd 0x0(%rip),%xmm3 # 1b83fd <dcn_bw_ceil2+0x3d> 1b83fc: 00 1b83fd: 66 0f 2f dc comisd %xmm4,%xmm3 1b8401: 72 01 jb 1b8404 <dcn_bw_ceil2+0x44> 1b8403: c3 retq 1b8404: f3 0f 58 ca addss %xmm2,%xmm1 1b8408: 0f 28 c1 movaps %xmm1,%xmm0 1b840b: c3 retq 1b840c: 75 c0 jne 1b83ce <dcn_bw_ceil2+0xe> 1b840e: 66 0f ef c0 pxor %xmm0,%xmm0 1b8412: c3 retq 1b8413: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 1b841a: 00 00 00 00 1b841e: 66 90 xchg %ax,%ax ... Instruction at RIP: 0010:dcn_bw_ceil2+0x35: >>> hex(0x00000000001b83c0 + 0x35) '0x1b83f5' 1b83f5: f2 0f 58 1d 00 00 00 addsd 0x0(%rip),%xmm3 # 1b83fd <dcn_bw_ceil2+0x3d> Same addsd instruction that was mentioned above. -- 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
