[PATCH] nouveau/vmm: don't set addr on the fail path to avoid warning

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

nvif_vmm_put gets called if addr is set, but if the allocation
fails we don't need to call put, otherwise we get a warning like

[523232.435671] ------------[ cut here ]------------
[523232.435674] WARNING: CPU: 8 PID: 1505697 at drivers/gpu/drm/nouveau/nvif/vmm.c:68 nvif_vmm_put+0x72/0x80 [nouveau]
[523232.435795] Modules linked in: uinput rfcomm snd_seq_dummy snd_hrtimer nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink qrtr bnep sunrpc binfmt_misc intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common isst_if_common iwlmvm nfit libnvdimm vfat fat x86_pkg_temp_thermal intel_powerclamp mac80211 snd_soc_avs snd_soc_hda_codec coretemp snd_hda_ext_core snd_soc_core snd_hda_codec_realtek kvm_intel snd_hda_codec_hdmi snd_compress snd_hda_codec_generic ac97_bus snd_pcm_dmaengine snd_hda_intel libarc4 snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec kvm iwlwifi snd_hda_core btusb snd_hwdep btrtl snd_seq btintel irqbypass btbcm rapl snd_seq_device eeepc_wmi btmtk intel_cstate iTCO_wdt cfg80211 snd_pcm asus_wmi bluetooth intel_pmc_bxt iTCO_vendor_support snd_timer ledtrig_audio pktcdvd snd mei_me
[523232.435828]  sparse_keymap intel_uncore i2c_i801 platform_profile wmi_bmof mei pcspkr ioatdma soundcore i2c_smbus rfkill idma64 dca joydev acpi_tad loop zram nouveau drm_ttm_helper ttm video drm_exec drm_gpuvm gpu_sched crct10dif_pclmul i2c_algo_bit nvme crc32_pclmul crc32c_intel drm_display_helper polyval_clmulni nvme_core polyval_generic e1000e mxm_wmi cec ghash_clmulni_intel r8169 sha512_ssse3 nvme_common wmi pinctrl_sunrisepoint uas usb_storage ip6_tables ip_tables fuse
[523232.435849] CPU: 8 PID: 1505697 Comm: gnome-shell Tainted: G        W          6.6.0-rc7-nvk-uapi+ #12
[523232.435851] Hardware name: System manufacturer System Product Name/ROG STRIX X299-E GAMING II, BIOS 1301 09/24/2021
[523232.435852] RIP: 0010:nvif_vmm_put+0x72/0x80 [nouveau]
[523232.435934] Code: 00 00 48 89 e2 be 02 00 00 00 48 c7 04 24 00 00 00 00 48 89 44 24 08 e8 fc bf ff ff 85
c0 75 0a 48 c7 43 08 00 00 00 00 eb b3 <0f> 0b eb f2 e8 f5 c9 b2 e6 0f 1f 44 00 00 90 90 90 90 90 90 90 90
[523232.435936] RSP: 0018:ffffc900077ffbd8 EFLAGS: 00010282
[523232.435937] RAX: 00000000fffffffe RBX: ffffc900077ffc00 RCX: 0000000000000010
[523232.435938] RDX: 0000000000000010 RSI: ffffc900077ffb38 RDI: ffffc900077ffbd8
[523232.435940] RBP: ffff888e1c4f2140 R08: 0000000000000000 R09: 0000000000000000
[523232.435940] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888503811800
[523232.435941] R13: ffffc900077ffca0 R14: ffff888e1c4f2140 R15: ffff88810317e1e0
[523232.435942] FS:  00007f933a769640(0000) GS:ffff88905fa00000(0000) knlGS:0000000000000000
[523232.435943] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[523232.435944] CR2: 00007f930bef7000 CR3: 00000005d0322001 CR4: 00000000003706e0
[523232.435945] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[523232.435946] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[523232.435964] Call Trace:
[523232.435965]  <TASK>
[523232.435966]  ? nvif_vmm_put+0x72/0x80 [nouveau]
[523232.436051]  ? __warn+0x81/0x130
[523232.436055]  ? nvif_vmm_put+0x72/0x80 [nouveau]
[523232.436138]  ? report_bug+0x171/0x1a0
[523232.436142]  ? handle_bug+0x3c/0x80
[523232.436144]  ? exc_invalid_op+0x17/0x70
[523232.436145]  ? asm_exc_invalid_op+0x1a/0x20
[523232.436149]  ? nvif_vmm_put+0x72/0x80 [nouveau]
[523232.436230]  ? nvif_vmm_put+0x64/0x80 [nouveau]
[523232.436342]  nouveau_vma_del+0x80/0xd0 [nouveau]
[523232.436506]  nouveau_vma_new+0x1a0/0x210 [nouveau]
[523232.436671]  nouveau_gem_object_open+0x1d0/0x1f0 [nouveau]
[523232.436835]  drm_gem_handle_create_tail+0xd1/0x180
[523232.436840]  drm_prime_fd_to_handle_ioctl+0x12e/0x200
[523232.436844]  ? __pfx_drm_prime_fd_to_handle_ioctl+0x10/0x10
[523232.436847]  drm_ioctl_kernel+0xd3/0x180
[523232.436849]  drm_ioctl+0x26d/0x4b0
[523232.436851]  ? __pfx_drm_prime_fd_to_handle_ioctl+0x10/0x10
[523232.436855]  nouveau_drm_ioctl+0x5a/0xb0 [nouveau]
[523232.437032]  __x64_sys_ioctl+0x94/0xd0
[523232.437036]  do_syscall_64+0x5d/0x90
[523232.437040]  ? syscall_exit_to_user_mode+0x2b/0x40
[523232.437044]  ? do_syscall_64+0x6c/0x90
[523232.437046]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 drivers/gpu/drm/nouveau/nouveau_vmm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_vmm.c b/drivers/gpu/drm/nouveau/nouveau_vmm.c
index a6602c012671..3dda885df5b2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vmm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vmm.c
@@ -108,6 +108,9 @@ nouveau_vma_new(struct nouveau_bo *nvbo, struct nouveau_vmm *vmm,
 	} else {
 		ret = nvif_vmm_get(&vmm->vmm, PTES, false, mem->mem.page, 0,
 				   mem->mem.size, &tmp);
+		if (ret)
+			goto done;
+
 		vma->addr = tmp.addr;
 	}
 
-- 
2.43.0