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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DU0PR04MB9417.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9f3383b0-b381-4248-ab1e-08dc843cf976 X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Jun 2024 02:20:59.7546 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: gQNNirkpRnkdF5hzkreP9XxCV7VxzaCjuMLIAZ+khScdHMs4257FSaD3PcpsDwhc0p+yZfSwmd+rVAWyduQ1WQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR04MB6988 X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: B748D40002 X-Stat-Signature: akbamuiuu3npc7jrpuw1ihtbipxku8aq X-HE-Tag: 1717467662-803092 X-HE-Meta: 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 vx/vPMhG WKwPGPyBOvRVgvbozFUeaWnQkoeu4BdBf6KJk2zTZJlAI/yzRQO3gqlx3tWOJ2GwEc0Ltap6cMvYC8RjUc3b6fHhLFAXQ+yJqNonianvq8Dxy3Gnu6mLGuriD30b1zlfv1x8MHhCmBQZZHub7xZUIFnlkbruF0CdGq78iC0Zv2C7q9WeMD0DtFjZlBe+FkEWpGFjEMculOugdUCY2ZZiYonrpVqUI1u65MpYc0e1ckoVzcKxyN16Nu2G5rXrQVVbhQemLaok6Ra9n4u0RRogeQwLgdlobJNtHWXl68t/eaDy6MVTI+Td2REQnz7GsRDqFyI+UqWWJ1xn/SzRAbEHPvrlXd71oDuWkPOcxTaKmo1votI73GwHgMY/ocXk4FNn3tieGZQQSLly+MkCvCNEfh5AdNQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000064, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Roman, > Subject: Re: [Oops] vfree abort in bpf_jit_free with memcg_data value 0xf= fff >=20 > On Mon, Jun 03, 2024 at 09:10:43AM +0000, Peng Fan wrote: > > Hi All, > > > > We are running 6.6 kernel on NXP i.MX95 platform, and meet an issue > > very hard to reproduce. Panic log in the end. I check the registers and > source code. >=20 > Hi! >=20 > Do you know by a chance if the issue is reproducible on newer kernels? >=20 > From a very first glance, I doubt it's a generic memory accounting issue, > otherwise we'd see a lot more instances of it. So my guess it something > related to bpf jit code. It seems like there were heavy changes since 6.6= , this > is why I'm asking about newer kernels. I not have a full test environment with newer kernel, the i.MX95 platform has not been landed in upstream repo. After I enable DEBUG_VM, I have a new dump in virt_to_phys: I am thinking whether the dma corrupt memory. And with disabling DPU, I am redoing the test, and see how it goes. [ 2.992655] ------------[ cut here ]------------ = =20 [ 3.003764] virt_to_phys used for non-linear address: 00000000897eac93 (= 0xffff800086001000) =20 [ 3.004944] sysctr_timer_read_write:10024 retry: 1 = =20 [ 3.012196] WARNING: CPU: 0 PID: 11 at arch/arm64/mm/physaddr.c:12 __vir= t_to_phys+0x68/0x98 =20 [ 3.025243] Modules linked in: = =20 [ 3.028312] CPU: 0 PID: 11 Comm: kworker/u12:0 Not tainted 6.6.23-06226-= g4986cc3e1b75-dirty #251=20 [ 3.037098] Hardware name: NXP i.MX95 19X19 board (DT) = =20 [ 3.042239] Workqueue: events_unbound deferred_probe_work_func = =20 [ 3.044953] sysctr_timer_read_write:10024 retry: 1 = =20 [ 3.048079] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE= =3D--) =20 [ 3.059796] pc : __virt_to_phys+0x68/0x98 = =20 [ 3.063809] lr : __virt_to_phys+0x68/0x98 = =20 [ 3.067839] sp : ffff800082de3990 = =20 [ 3.071141] x29: ffff800082de3990 x28: 0000000000000000 x27: 00000000343= 25258 =20 [ 3.078282] x26: ffff000084748000 x25: ffff0000818ba800 x24: ffff0000847= 1dc00 =20 [ 3.084954] sysctr_timer_read_write:10024 retry: 1 = =20 [ 3.085423] x23: 0000000000000000 x22: ffff0000818ba200 x21: ffff0000808= 0bc00 =20 [ 3.097323] x20: ffff0000847345c0 x19: ffff800086001000 x18: 00000000000= 00006 =20 [ 3.104447] x17: 6666783028203339 x16: 6361653739383030 x15: 30303030303= 0203a =20 [ 3.111588] x14: 7373657264646120 x13: 2930303031303036 x12: 38303030386= 66666 =20 [ 3.118712] x11: 6678302820333963 x10: 0000000000000a90 x9 : ffff8000800= e04a0 =20 [ 3.120954] sysctr_timer_read_write:10024 retry: 1 = =20 [ 3.125836] x8 : ffff0000803d28f0 x7 : 000000006273d88e x6 : 00000000000= 00400 =20 [ 3.137736] x5 : 00000000410fd050 x4 : 0000000000f0000f x3 : 00000000002= 00000 =20 [ 3.144894] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000803= d1e00 =20 [ 3.152036] Call trace: = =20 [ 3.154489] __virt_to_phys+0x68/0x98 = =20 [ 3.158163] drm_fbdev_dma_helper_fb_probe+0x138/0x238 = =20 [ 3.163294] __drm_fb_helper_initial_config_and_unlock+0x2b0/0x4c0 = =20 [ 3.169012] sysctr_timer_read_write:10024 retry: 1 = =20 [ 3.169498] drm_fb_helper_initial_config+0x4c/0x68 = =20 [ 3.177000] sysctr_timer_read_write:10024 retry: 1 = =20 [ 3.179136] drm_fbdev_dma_client_hotplug+0x8c/0xe0 = =20 [ 3.188773] drm_client_register+0x60/0xb0 = =20 [ 3.192881] drm_fbdev_dma_setup+0x94/0x148 = =20 [ 3.197059] dpu95_probe+0xc4/0x130 = =20 [ 3.200577] platform_probe+0x70/0xd0 = =20 [ 3.204252] really_probe+0x150/0x2c0 =20 Thanks Peng >=20 > Thanks!