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AJvYcCUqyBnWgDwjzfG/S7ugkxFtngIEtO5w1i/gZXLUtvVTQrTYF0WV7Q/ToKi3jyT4wO0vfWhpZwfvWodtMK4=@lists.ozlabs.org X-Gm-Message-State: AOJu0YwVA3k/ANw5Ng4uaCZqZn3g0GRbQ/T4G8fYIzdapEx4KjZVo6f6 1NUpL3U9zHAES4KWXXV+fSx4Ao2hns6MOb8A1sLFTVGqXN2urSU0ZF1p6zMq X-Google-Smtp-Source: AGHT+IGih0JqZxo7OMQiCbe3aSIGP1/mqIcjcR8nEQytnEFm6+cHWuAt81OdIAN9ZfVFjnDmv5UV/w== X-Received: by 2002:a17:902:f611:b0:20c:7be3:2832 with SMTP id d9443c01a7336-211d0d85b8fmr98140805ad.31.1731761806787; Sat, 16 Nov 2024 04:56:46 -0800 (PST) Received: from dw-tp ([49.205.218.89]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-211d0f47ae7sm26525425ad.208.2024.11.16.04.56.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Nov 2024 04:56:46 -0800 (PST) From: Ritesh Harjani (IBM) To: Zorro Lang , linuxppc-dev@lists.ozlabs.org, Venkat Rao Bagalkote Subject: Re: [bug report from fstests] WARNING: CPU: 1 PID: 0 at arch/powerpc/mm/mmu_context.c:106 switch_mm_irqs_off+0x220/0x270 In-Reply-To: <20241111132532.2ikhu3q56klfhvte@dell-per750-06-vm-08.rhts.eng.pek2.redhat.com> Date: Sat, 16 Nov 2024 18:13:36 +0530 Message-ID: <87mshzcps7.fsf@gmail.com> References: <20241111132532.2ikhu3q56klfhvte@dell-per750-06-vm-08.rhts.eng.pek2.redhat.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Zorro Lang writes: > Hi, > > Recently fstests generic/650 hit a kernel warning on ppc64le [1] with > xfs (default mkfs option). My latest test on mainline linux v6.12-rc6+ > with HEAD=da4373fbcf006deda90e5e6a87c499e0ff747572 . I tried this on KVM pseries machine type, but I am unable to hit it. Let me try that on an actual LPAR and confirm whether I can still hit this or not. Then maybe we can see if we could get a git bisect log of it. Thanks for reporting it. -ritesh > > Thanks, > Zorro > > > [1] > FSTYP -- xfs (debug) > PLATFORM -- Linux/ppc64le rdma-cert-03-lp10 6.12.0-rc6+ #1 SMP Sat Nov 9 13:18:41 EST 2024 > MKFS_OPTIONS -- -f -m crc=1,finobt=1,rmapbt=1,reflink=1,inobtcount=1,bigtime=1 /dev/sda3 > MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 /dev/sda3 /mnt/xfstests/scratch > > generic/650 _check_dmesg: something found in dmesg (see /var/lib/xfstests/results//generic/650.dmesg) > > > HINT: You _MAY_ be missing kernel fix: > ecd49f7a36fb xfs: fix per-cpu CIL structure aggregation racing with dying cpus > > Ran: generic/650 > Failures: generic/650 > Failed 1 of 1 tests > > > # cat /var/lib/xfstests/results//generic/650.dmesg > [16630.359077] run fstests generic/650 at 2024-11-09 18:03:21 > [16631.058519] ------------[ cut here ]------------ > [16631.058531] WARNING: CPU: 1 PID: 0 at arch/powerpc/mm/mmu_context.c:106 switch_mm_irqs_off+0x220/0x270 > [16631.058542] Modules linked in: overlay dm_zero dm_log_writes dm_thin_pool dm_persistent_data dm_bio_prison dm_snapshot dm_bufio ext4 mbcache jbd2 dm_flakey bonding tls rfkill sunrpc ibmveth pseries_rng vmx_crypto sg dm_mod fuse loop nfnetlink xfs sd_mod nvme nvme_core ibmvscsi scsi_transport_srp nvme_auth [last unloaded: scsi_debug] > [16631.058617] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G W 6.12.0-rc6+ #1 > [16631.058623] Tainted: [W]=WARN > [16631.058625] Hardware name: IBM,9009-22G POWER9 (architected) 0x4e0203 0xf000005 of:IBM,FW950.11 (VL950_075) hv:phyp pSeries > [16631.058629] NIP: c0000000000b02c0 LR: c0000000000b0220 CTR: c000000000152a20 > [16631.058633] REGS: c000000008bd7ad0 TRAP: 0700 Tainted: G W (6.12.0-rc6+) > [16631.058637] MSR: 8000000002823033 CR: 2800440a XER: 20040000 > [16631.058660] CFAR: c0000000000b0230 IRQMASK: 3 > GPR00: c0000000000b027c c000000008bd7d70 c000000002616800 c00000016131a900 > GPR04: 0000000000000000 000000000000000a 0000000000000000 0000000000000000 > GPR08: 0000000000000000 0000000000000000 0000000000000001 0000000000000000 > GPR12: c000000000152a20 c00000000ffcf300 0000000000000000 000000001ef31820 > GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000001 > GPR24: 0000000000000001 c0000000089acb00 c000000004fafcb0 0000000000000000 > GPR28: c000000004f24880 c00000016131a900 0000000000000001 c000000004f25180 > [16631.058740] NIP [c0000000000b02c0] switch_mm_irqs_off+0x220/0x270 > [16631.058746] LR [c0000000000b0220] switch_mm_irqs_off+0x180/0x270 > [16631.058751] Call Trace: > [16631.058754] [c000000008bd7d70] [c0000000000b027c] switch_mm_irqs_off+0x1dc/0x270 (unreliable) > [16631.058763] [c000000008bd7de0] [c0000000002572f8] idle_task_exit+0x118/0x1b0 > [16631.058771] [c000000008bd7e40] [c000000000152a70] pseries_cpu_offline_self+0x50/0x150 > [16631.058780] [c000000008bd7eb0] [c000000000078678] arch_cpu_idle_dead+0x68/0x7c > [16631.058787] [c000000008bd7ee0] [c00000000029f504] do_idle+0x1c4/0x290 > [16631.058793] [c000000008bd7f40] [c00000000029fa90] cpu_startup_entry+0x60/0x70 > [16631.058800] [c000000008bd7f70] [c00000000007825c] start_secondary+0x44c/0x480 > [16631.058807] [c000000008bd7fe0] [c00000000000e258] start_secondary_prolog+0x10/0x14 > [16631.058815] Code: 38800004 387c00f8 487f7a51 60000000 813c00f8 7129000a 4182ff40 2c3d0000 4182ff38 7c0004ac 4bffffb8 4bffff30 <0fe00000> 4bffff70 60000000 60000000 > [16631.058848] irq event stamp: 15169028 > [16631.058850] hardirqs last enabled at (15169027): [] tick_nohz_idle_exit+0x1c0/0x3b0 > [16631.058858] hardirqs last disabled at (15169028): [] __schedule+0x5ac/0xc30 > [16631.058865] softirqs last enabled at (15169016): [] handle_softirqs+0x578/0x620 > [16631.058871] softirqs last disabled at (15168957): [] do_softirq_own_stack+0x6c/0x90 > [16631.058878] ---[ end trace 0000000000000000 ]--- > [16631.814920] NOHZ tick-stop error: local softirq work is pending, handler #40!!! > [16635.633774] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16635.752583] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16635.764402] XFS (sda5): Ending clean mount > [16637.842353] clockevent: decrementer mult[83126f] shift[24] cpu[6] > [16640.956776] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16641.078711] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16641.090273] XFS (sda5): Ending clean mount > [16646.729241] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16646.850952] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16646.863752] XFS (sda5): Ending clean mount > [16653.467205] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16653.594764] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16653.606795] XFS (sda5): Ending clean mount > [16659.346160] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16659.465528] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16659.478422] XFS (sda5): Ending clean mount > [16665.517371] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16665.656116] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16665.668005] XFS (sda5): Ending clean mount > [16672.655768] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16672.781813] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16672.794638] XFS (sda5): Ending clean mount > [16679.551991] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16679.668639] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16679.683949] XFS (sda5): Ending clean mount > [16685.384912] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16685.510632] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16685.522819] XFS (sda5): Ending clean mount > [16691.213987] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16691.347125] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16691.358483] XFS (sda5): Ending clean mount > [16712.697103] XFS (sda5): EXPERIMENTAL online scrub feature in use. Use at your own risk! > [16715.846166] XFS (sda5): Unmounting Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16716.047814] XFS (sda5): Mounting V5 Filesystem 3e7de15a-300a-41f2-8745-5be808cc3f7b > [16716.058628] XFS (sda5): Ending clean mount