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Fri, 14 Mar 2025 10:38:55 +0000 Received: from DM4PR11MB6503.namprd11.prod.outlook.com ([fe80::5881:5ec3:6913:3119]) by DM4PR11MB6503.namprd11.prod.outlook.com ([fe80::5881:5ec3:6913:3119%6]) with mapi id 15.20.8511.026; Fri, 14 Mar 2025 10:38:55 +0000 From: "Ma, Jiping" To: "juri.lelli@redhat.com" CC: "gregkh@linuxfoundation.org" , "peterz@infradead.org" , "sashal@kernel.org" , "stable@vger.kernel.org" , "wander@redhat.com" , "mingo@redhat.com" , "vincent.guittot@linaro.org" , "dietmar.eggemann@arm.com" , "rostedt@goodmis.org" , "bsegall@google.com" , "mgorman@suse.de" , "vschneid@redhat.com" , "linux-kernel@vger.kernel.org" , "jiping.ma2@windirvier.com" , "Tao, Yue" Subject: RE: sched/deadline: warning in migrate_enable for boosted tasks Thread-Topic: sched/deadline: warning in migrate_enable for boosted tasks Thread-Index: AduUlbvhp17hxZyWQSiDwC+Hn8B24wAMuKOAAAD/UbA= Date: Fri, 14 Mar 2025 10:38:55 +0000 Message-ID: References: In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: DM4PR11MB6503:EE_|DS7PR11MB7887:EE_ x-ms-office365-filtering-correlation-id: f416d6f4-027b-4898-963c-08dd62e46ba4 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0;ARA:13230040|1800799024|366016|376014|7416014|7053199007|38070700018; 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peterz@infradead.org; sashal@kernel.org; st= able@vger.kernel.org; wander@redhat.com; mingo@redhat.com; vincent.guittot@= linaro.org; dietmar.eggemann@arm.com; rostedt@goodmis.org; bsegall@google.c= om; mgorman@suse.de; vschneid@redhat.com; linux-kernel@vger.kernel.org; jip= ing.ma2@windirvier.com; Tao, Yue Subject: Re: sched/deadline: warning in migrate_enable for boosted tasks CAUTION: This email comes from a non Wind River email account! 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Hello, On 14/03/25 04:02, Ma, Jiping wrote: > Hi, All > > We encounter this kernel warning, it looks similar with the one you=20 > are discussing [PATCH 6.6 331/356] sched/deadline: Fix warning in=20 > migrate_enable for boosted tasks - Greg=20 > Kroah-Hartman. > Do you have any idea for the issue? > > kernel: warning [ 998.494702] WARNING: CPU: 19 PID: 217 at=20 > kernel/sched/deadline.c:277 dequeue_task_dl+0x16c/0x1f0 > kernel: warning [ 998.494705] Modules linked in: iptable_nat ceph=20 > netfs macvlan igb_uio(O) uio nbd rbd libceph dns_resolver=20 > nf_conntrack_netlink nfnetlink_queue xt_NFQUEUE xt_set xt_multiport=20 > ipt_rpfilter ip6t_rpfilter ip_set_hash_net ip_set_hash_ip ip_set veth=20 > wireguard libchacha20poly1305 chacha_x86_64 poly1305_x86_64=20 > curve25519_x86_64 libcurve25519_generic libchacha xt_nat xt_MASQUERADE=20 > xt_mark ipt_REJECT nf_reject_ipv4 nft_chain_nat nf_nat xt_conntrack=20 > nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_comment vfio_pci=20 > vfio_pci_core binfmt_misc iscsi_target_mod target_core_mod drbd=20 > dm_crypt trusted asn1_encoder xt_addrtype nft_compat nf_tables=20 > nfnetlink br_netfilter bridge virtio_net net_failover failover nfsd=20 > auth_rpcgss nfs_acl lockd grace overlay 8021q garp stp mrp llc xfs=20 > vfio_iommu_type1 vfio sctp ip6_udp_tunnel udp_tunnel xprtrdma(O)=20 > svcrdma(O) rpcrdma(O) nvmet_rdma(O) nvme_rdma(O) ib_srp(O) ib_isert(O)=20 > ib_iser(O) rdma_rxe(O) mlx5_ib(O) mlx5_core(O) mlxfw(O) mlxdevm(O)=20 > psample tls macsec rdma_ucm(O) rdma_cm(O) iw_cm(O) > kernel: warning [ 998.494748] ib_uverbs(O) ib_ucm(O) ib_cm(O) lru_cache= libcrc32c fuse drm sunrpc efivarfs ip_tables ext4 mbcache jbd2 dm_multipat= h dm_mod sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft crc64 iTCO_wdt= wmi_bmof iTCO_vendor_support dell_smbios dell_wmi_descriptor ledtrig_audio= rfkill video intel_uncore_frequency intel_uncore_frequency_common x86_pkg_= temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pc= lmul bnxt_re(O) crc32_pclmul crc32c_intel ghash_clmulni_intel sha512_ssse3 = ib_core(O) rapl mlx_compat(O) uas intel_cstate intel_uncore acpi_ipmi mei_m= e ahci i2c_i801 bnxt_en(O) usb_storage i2c_smbus intel_pch_thermal mei liba= hci intel_vsec wmi ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter ia= vf(O) i40e(O) ice(O) [last unloaded: drbd] > kernel: warning [ 998.494781] CPU: 19 PID: 217 Comm: ktimers/19 Kdump: l= oaded Tainted: G W O 6.6.0-1-rt-amd64 #1 Debian 6.6.52-1.stx= .95 > kernel: warning [ 998.494783] Hardware name: Dell Inc. PowerEdge=20 > XR11/0P2RNT, BIOS 1.15.2 09/10/2024 > kernel: warning [ 998.494784] RIP: 0010:dequeue_task_dl+0x16c/0x1f0 > kernel: warning [ 998.494786] Code: 48 c7 c7 e0 eb 89 ae c6 05 fd a2=20 > 6d 01 01 e8 9b ac f9 ff 0f 0b eb 81 48 c7 c7 c5 39 83 ae c6 05 e7 a2=20 > 6d 01 01 e8 84 ac f9 ff <0f> 0b 48 8b 83 28 09 00 00 49 39 c5 0f 83 53=20 > ff ff ff 48 c7 83 28 > kernel: warning [ 998.494788] RSP: 0000:ff32fa3140adbca8 EFLAGS:=20 > 00010082 > kernel: warning [ 998.494790] RAX: 0000000000000000 RBX:=20 > ff2ef1f93faf23c0 RCX: ff2ef1f93fae0608 > kernel: warning [ 998.494791] RDX: 00000000ffffffd8 RSI:=20 > 0000000000000027 RDI: ff2ef1f93fae0600 > kernel: warning [ 998.494793] RBP: ff2ef1e9c19eaf80 R08:=20 > 0000000000000000 R09: ff32fa3140adbc30 > kernel: warning [ 998.494794] R10: 0000000000000001 R11:=20 > 0000000000000015 R12: 000000000000000e > kernel: warning [ 998.494795] R13: 0000000000000000 R14:=20 > 00000000ffffffff R15: 000000000000000e > kernel: warning [ 998.494796] FS: 0000000000000000(0000)=20 > GS:ff2ef1f93fac0000(0000) knlGS:0000000000000000 > kernel: warning [ 998.494798] CS: 0010 DS: 0000 ES: 0000 CR0:=20 > 0000000080050033 > kernel: warning [ 998.494799] CR2: 00000000181b50a0 CR3:=20 > 000000063db68005 CR4: 0000000000771ee0 > kernel: warning [ 998.494801] DR0: 0000000000000000 DR1:=20 > 0000000000000000 DR2: 0000000000000000 > kernel: warning [ 998.494802] DR3: 0000000000000000 DR6:=20 > 00000000fffe0ff0 DR7: 0000000000000400 > kernel: warning [ 998.494803] PKRU: 55555554 > kernel: warning [ 998.494804] Call Trace: > kernel: warning [ 998.494805] > kernel: warning [ 998.494805] ? __warn+0x89/0x140 > kernel: warning [ 998.494808] ? dequeue_task_dl+0x16c/0x1f0 > kernel: warning [ 998.494810] ? report_bug+0x198/0x1b0 > kernel: warning [ 998.494814] ? handle_bug+0x3c/0x70 > kernel: warning [ 998.494816] ? exc_invalid_op+0x18/0x70 > kernel: warning [ 998.494818] ? asm_exc_invalid_op+0x1a/0x20 > kernel: warning [ 998.494821] ? dequeue_task_dl+0x16c/0x1f0 > kernel: warning [ 998.494823] ? dequeue_task_dl+0x16c/0x1f0 > kernel: warning [ 998.494825] rt_mutex_setprio+0x240/0x460 > kernel: warning [ 998.494828] rt_mutex_slowunlock+0x143/0x280 > kernel: warning [ 998.494831] ? __pfx_mce_timer_fn+0x10/0x10 > kernel: warning [ 998.494833] mce_timer_fn+0x90/0xe0 > kernel: warning [ 998.494835] ? __pfx_mce_timer_fn+0x10/0x10 > kernel: warning [ 998.494837] call_timer_fn+0x24/0x130 > kernel: warning [ 998.494840] expire_timers+0xd3/0x1c0 Not sure it's the same issue. Stacktrace looks different. Anyway, are you m= aybe able to verify if the issue is still reproducible with latest v6.6-rt = stable (v6.6.78-rt51 at the time of writing)? Looks like you are on v6.6-rt, thus the question. -------Yes, we use v6.6.52-rt. It is not easy to reproduce. We will try to= test it with v6.6.78-rt51. Thanks, Juri