slowpath warning on Tonga

Wed Aug 17 17:36:03 UTC 2016

I just happened to notice this on my Tonga.  It's otherwise operating fine.  For ref, it's attached to a HDMI KVM which eventually makes it way to a DVI-D monitor.

[   28.579561] ------------[ cut here ]------------
[   28.579613] WARNING: CPU: 4 PID: 1276 at drivers/gpu/drm/amd/amdgpu/../dal/modules/freesync/freesync.c:187 map_index_from_stream.isra.6.part.7+0x1a/0x20 [amdgpu]
[   28.579615] Modules linked in: amdkfd amd_iommu_v2 amdgpu i2c_algo_bit ttm drm_kms_helper drm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack tun bridge ebtable_filter ebtables ip6table_filter ip6_tables rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi kvm_amd snd_hda_intel vfat fat kvm snd_hda_codec snd_hda_core eeepc_wmi asus_wmi irqbypass sparse_keymap crct10dif_pclmul snd_hwdep snd_seq crc32_pclmul rfkill video crc32c_intel snd_seq_device mxm_wmi ghash_clmulni_intel snd_pcm snd_timer edac_mce_amd sp5100_tco edac_core joydev snd pcspkr fam15h_power k10temp i2c_piix4 tpm_infineon acpi_cpufreq soundcore tpm_tis nfsd tpm wmi shpchp
[   28.579646]  auth_rpcgss nfs_acl lockd grace sunrpc 8021q garp stp llc mrp r8169 serio_raw mii fjes
[   28.579653] CPU: 4 PID: 1276 Comm: Xorg Tainted: G        W       4.6.0+ #3
[   28.579655] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 LE R2.0, BIOS 2501 04/09/2014
[   28.579656]  0000000000000286 0000000018ea4846 ffff8800ad38bb80 ffffffff813cd56e
[   28.579658]  0000000000000000 0000000000000000 ffff8800ad38bbc0 ffffffff810a4c9b
[   28.579660]  000000bbb6cdf030 ffff8800b9d2a0a8 ffff8800b6d0f000 ffff8800ad38bc1a
[   28.579661] Call Trace:
[   28.579665]  [<ffffffff813cd56e>] dump_stack+0x63/0x85
[   28.579668]  [<ffffffff810a4c9b>] __warn+0xcb/0xf0
[   28.579670]  [<ffffffff810a4dcd>] warn_slowpath_null+0x1d/0x20
[   28.579702]  [<ffffffffa067380a>] map_index_from_stream.isra.6.part.7+0x1a/0x20 [amdgpu]
[   28.579735]  [<ffffffffa0674730>] mod_freesync_set_user_enable+0xc0/0x180 [amdgpu]
[   28.579766]  [<ffffffffa062d719>] amdgpu_dm_connector_atomic_set_property+0x1d9/0x1f0 [amdgpu]
[   28.579782]  [<ffffffffa0514fc4>] drm_atomic_connector_set_property+0x34/0x70 [drm]
[   28.579790]  [<ffffffffa056d64b>] drm_atomic_helper_connector_set_property+0x7b/0xc0 [drm_kms_helper]
[   28.579799]  [<ffffffffa0503039>] ? _object_find+0x69/0xa0 [drm]
[   28.579809]  [<ffffffffa050a437>] drm_mode_obj_set_property_ioctl+0x177/0x250 [drm]
[   28.579820]  [<ffffffffa050a54f>] drm_mode_connector_property_set_ioctl+0x3f/0x60 [drm]
[   28.579829]  [<ffffffffa04fa912>] drm_ioctl+0x152/0x540 [drm]
[   28.579835]  [<ffffffff811b1c26>] ? filemap_map_pages+0x126/0x340
[   28.579845]  [<ffffffffa050a510>] ? drm_mode_obj_set_property_ioctl+0x250/0x250 [drm]
[   28.579847]  [<ffffffff811ee2b3>] ? unmap_region+0xf3/0x130
[   28.579850]  [<ffffffff817cd40e>] ? _raw_spin_unlock_irqrestore+0xe/0x10
[   28.579871]  [<ffffffffa05a004c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[   28.579874]  [<ffffffff81252cb1>] do_vfs_ioctl+0xa1/0x5a0
[   28.579876]  [<ffffffff81253229>] SyS_ioctl+0x79/0x90
[   28.579878]  [<ffffffff817cd832>] entry_SYSCALL_64_fastpath+0x1a/0xa4
[   28.579879] ---[ end trace 51ecc44c48a97e14 ]---
[   28.579880] ------------[ cut here ]------------
[   28.579913] WARNING: CPU: 4 PID: 1276 at drivers/gpu/drm/amd/amdgpu/../dal/modules/freesync/freesync.c:187 map_index_from_stream.isra.6.part.7+0x1a/0x20 [amdgpu]
[   28.579915] Modules linked in: amdkfd amd_iommu_v2 amdgpu i2c_algo_bit ttm drm_kms_helper drm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack tun bridge ebtable_filter ebtables ip6table_filter ip6_tables rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi kvm_amd snd_hda_intel vfat fat kvm snd_hda_codec snd_hda_core eeepc_wmi asus_wmi irqbypass sparse_keymap crct10dif_pclmul snd_hwdep snd_seq crc32_pclmul rfkill video crc32c_intel snd_seq_device mxm_wmi ghash_clmulni_intel snd_pcm snd_timer edac_mce_amd sp5100_tco edac_core joydev snd pcspkr fam15h_power k10temp i2c_piix4 tpm_infineon acpi_cpufreq soundcore tpm_tis nfsd tpm wmi shpchp
[   28.579940]  auth_rpcgss nfs_acl lockd grace sunrpc 8021q garp stp llc mrp r8169 serio_raw mii fjes
[   28.579944] CPU: 4 PID: 1276 Comm: Xorg Tainted: G        W       4.6.0+ #3
[   28.579945] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 LE R2.0, BIOS 2501 04/09/2014
[   28.579946]  0000000000000286 0000000018ea4846 ffff8800ad38bb38 ffffffff813cd56e
[   28.579948]  0000000000000000 0000000000000000 ffff8800ad38bb78 ffffffff810a4c9b
[   28.579949]  000000bb00000000 ffff8800b9d2a0a8 ffff8800b9d2a0a8 ffff8800b9d2a0b0
[   28.579951] Call Trace:
[   28.579952]  [<ffffffff813cd56e>] dump_stack+0x63/0x85
[   28.579954]  [<ffffffff810a4c9b>] __warn+0xcb/0xf0
[   28.579956]  [<ffffffff810a4dcd>] warn_slowpath_null+0x1d/0x20
[   28.579987]  [<ffffffffa067380a>] map_index_from_stream.isra.6.part.7+0x1a/0x20 [amdgpu]
[   28.580018]  [<ffffffffa067399d>] set_freesync_on_streams+0x8d/0x270 [amdgpu]
[   28.580050]  [<ffffffffa06747b6>] mod_freesync_set_user_enable+0x146/0x180 [amdgpu]
[   28.580078]  [<ffffffffa062d719>] amdgpu_dm_connector_atomic_set_property+0x1d9/0x1f0 [amdgpu]
[   28.580088]  [<ffffffffa0514fc4>] drm_atomic_connector_set_property+0x34/0x70 [drm]
[   28.580093]  [<ffffffffa056d64b>] drm_atomic_helper_connector_set_property+0x7b/0xc0 [drm_kms_helper]
[   28.580102]  [<ffffffffa0503039>] ? _object_find+0x69/0xa0 [drm]
[   28.580112]  [<ffffffffa050a437>] drm_mode_obj_set_property_ioctl+0x177/0x250 [drm]
[   28.580121]  [<ffffffffa050a54f>] drm_mode_connector_property_set_ioctl+0x3f/0x60 [drm]
[   28.580129]  [<ffffffffa04fa912>] drm_ioctl+0x152/0x540 [drm]
[   28.580131]  [<ffffffff811b1c26>] ? filemap_map_pages+0x126/0x340
[   28.580140]  [<ffffffffa050a510>] ? drm_mode_obj_set_property_ioctl+0x250/0x250 [drm]
[   28.580142]  [<ffffffff811ee2b3>] ? unmap_region+0xf3/0x130
[   28.580144]  [<ffffffff817cd40e>] ? _raw_spin_unlock_irqrestore+0xe/0x10
[   28.580166]  [<ffffffffa05a004c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[   28.580168]  [<ffffffff81252cb1>] do_vfs_ioctl+0xa1/0x5a0
[   28.580170]  [<ffffffff81253229>] SyS_ioctl+0x79/0x90
[   28.580171]  [<ffffffff817cd832>] entry_SYSCALL_64_fastpath+0x1a/0xa4
[   28.580173] ---[ end trace 51ecc44c48a97e15 ]---

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