Message ID | 20231024170806.194563-2-robdclark@gmail.com |
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State | New |
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Tue, 24 Oct 2023 10:08:14 -0700 (PDT) From: Rob Clark <robdclark@gmail.com> To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Rob Clark <robdclark@chromium.org>, Rob Clark <robdclark@gmail.com>, Abhinav Kumar <quic_abhinavk@quicinc.com>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, Sean Paul <sean@poorly.run>, Marijn Suijten <marijn.suijten@somainline.org>, David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>, linux-kernel@vger.kernel.org (open list) Subject: [PATCH 2/2] drm/msm/gem: Demote allocations to __GFP_NOWARN Date: Tue, 24 Oct 2023 10:08:05 -0700 Message-ID: <20231024170806.194563-2-robdclark@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231024170806.194563-1-robdclark@gmail.com> References: <20231024170806.194563-1-robdclark@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on howler.vger.email Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); 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Series |
[1/2] drm/msm/gem: Demote userspace errors to DRM_UT_DRIVER
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Commit Message
Rob Clark
Oct. 24, 2023, 5:08 p.m. UTC
From: Rob Clark <robdclark@chromium.org> For allocations with userspace controlled size, we should not warn on allocation failure. Fixes KASAN splat: WARNING: CPU: 6 PID: 29557 at mm/page_alloc.c:5398 __alloc_pages+0x160c/0x2204 Modules linked in: bridge stp llc hci_vhci tun veth xt_cgroup uinput xt_MASQUERADE rfcomm ip6table_nat fuse 8021q r8153_ecm cdc_ether usbnet r8152 mii venus_enc venus_dec uvcvideo algif_hash algif_skcipher af_alg qcom_spmi_adc_tm5 qcom_spmi_adc5 qcom_vadc_common qcom_spmi_temp_alarm cros_ec_typec typec hci_uart btqca qcom_stats snd_soc_sc7180 venus_core ath10k_snoc ath10k_core ath coresight_tmc coresight_replicator coresight_etm4x coresight_funnel snd_soc_lpass_sc7180 mac80211 coresight bluetooth ecdh_generic ecc cfg80211 cros_ec_sensorhub lzo_rle lzo_compress zram joydev CPU: 6 PID: 29557 Comm: syz-executor Not tainted 5.15.110-lockdep-19320-g89d010b0a9df #1 45bdd400697a78353f2927c116615abba810e5dd Hardware name: Google Kingoftown (DT) pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __alloc_pages+0x160c/0x2204 lr : __alloc_pages+0x58/0x2204 sp : ffffffc0214176c0 x29: ffffffc0214178a0 x28: ffffff801f7b4000 x27: 0000000000000000 x26: ffffff808a4fa000 x25: 1ffffff011290781 x24: ffffff808a59c000 x23: 0000000000000010 x22: ffffffc0080e6980 x21: 0000000000000010 x20: 0000000000000000 x19: 00000000080001f8 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000020000500 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000001 x11: 0000000000000000 x10: 1ffffff804282f06 x9 : 0000000000000000 x8 : ffffffc021417848 x7 : 0000000000000000 x6 : ffffffc0082ac788 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffffffc021417830 Call trace: __alloc_pages+0x160c/0x2204 kmalloc_order+0x50/0xf4 kmalloc_order_trace+0x38/0x18c __kmalloc+0x300/0x45c msm_ioctl_gem_submit+0x284/0x5988 drm_ioctl_kernel+0x270/0x418 drm_ioctl+0x5e0/0xbf8 __arm64_sys_ioctl+0x154/0x1d0 invoke_syscall+0x98/0x278 el0_svc_common+0x214/0x274 do_el0_svc+0x9c/0x19c el0_svc+0x5c/0xc0 el0t_64_sync_handler+0x78/0x108 el0t_64_sync+0x1a4/0x1a8 Signed-off-by: Rob Clark <robdclark@chromium.org> --- drivers/gpu/drm/msm/msm_gem_submit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 9f16af761bf0..6d8ec1337e8b 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -43,7 +43,7 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev, if (sz > SIZE_MAX) return ERR_PTR(-ENOMEM); - submit = kzalloc(sz, GFP_KERNEL); + submit = kzalloc(sz, GFP_KERNEL | __GFP_NOWARN); if (!submit) return ERR_PTR(-ENOMEM); @@ -234,7 +234,7 @@ static int submit_lookup_cmds(struct msm_gem_submit *submit, ret = -ENOMEM; goto out; } - submit->cmd[i].relocs = kmalloc(sz, GFP_KERNEL); + submit->cmd[i].relocs = kmalloc(sz, GFP_KERNEL | __GFP_NOWARN); if (!submit->cmd[i].relocs) { ret = -ENOMEM; goto out;