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Message-ID: <d583adf0-2d98-60b6-620c-722912c05852@linux.vnet.ibm.com> Date: Wed, 2 Mar 2022 13:31:39 +0530 From: Abdul Haleem <abdhalee@...ux.vnet.ibm.com> To: linux-scsi <linux-scsi@...r.kernel.org> Cc: yukuai3@...wei.com, ming.lei@...hat.com, linux-next <linux-next@...r.kernel.org>, axboe@...nel.dk, linux-block@...r.kernel.org, linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>, linux-kernel <linux-kernel@...r.kernel.org> Subject: [next-20220225][Oops][ppc] lvm snapshot merge results kernel panics (throtl_pending_timer_fn) Greeting's Linux next kernel 5.17.0-rc5-next-20220225 crashed on my power 10 LPAR when merge lvm snapshot on nvme disk console logs ------------ fdisk -l /dev/nvme1n1 Disk /dev/nvme1n1: 372.6 GiB, 400088457216 bytes, 97677846 sectors Units: sectors of 1 * 4096 = 4096 bytes Sector size (logical/physical): 4096 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes vgcreate avocado_vg /dev/nvme1n1 Volume group "avocado_vg" successfully created lvcreate --name avocado_lv --size 18432.0 avocado_vg -y Wiping ext2 signature on /dev/avocado_vg/avocado_lv. Logical volume "avocado_lv" created. lvdisplay avocado_vg --- Logical volume --- LV Path /dev/avocado_vg/avocado_lv LV Name avocado_lv VG Name avocado_vg LV UUID nkhkFh-Oofl-GKH1-1055-3B47-0gup-yQtI1s LV Write Access read/write LV Creation host, time ltc-zz1b-lp4.aus.stglabs.ibm.com, 2022-03-02 01:32:19 -0600 LV Status available # open 0 LV Size 18.00 GiB Current LE 4608 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:0 mkfs.ext2 /dev/avocado_vg/avocado_lv mke2fs 1.44.6 (5-Mar-2019) Creating filesystem with 4718592 4k blocks and 1179648 inodes Filesystem UUID: 5ed3c335-bac2-4b64-a827-222d287af0b2 Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000 Allocating group tables: done Writing inode tables: done Writing superblocks and filesystem accounting information: done mount /dev/avocado_vg/avocado_lv /mnt [ 1053.517019] EXT4-fs (dm-0): mounting ext2 file system using the ext4 subsystem [ 1053.518270] EXT4-fs (dm-0): mounted filesystem without journal. Quota mode: none. umount /dev/avocado_vg/avocado_lv lvdisplay avocado_vg --- Logical volume --- LV Path /dev/avocado_vg/avocado_lv LV Name avocado_lv VG Name avocado_vg LV UUID nkhkFh-Oofl-GKH1-1055-3B47-0gup-yQtI1s LV Write Access read/write LV Creation host, time ltc-zz1b-lp4.aus.stglabs.ibm.com, 2022-03-02 01:32:19 -0600 LV Status available # open 0 LV Size 18.00 GiB Current LE 4608 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:0 lvcreate --snapshot --name avocado_sn /dev/avocado_vg/avocado_lv --ignoreactivationskip --size 18432.0 Logical volume "avocado_sn" created. vgdisplay avocado_vg --- Volume group --- VG Name avocado_vg System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size <372.61 GiB PE Size 4.00 MiB Total PE 95388 Alloc PE / Size 9216 / 36.00 GiB Free PE / Size 86172 / <336.61 GiB VG UUID jobi1f-kHw4-2ovw-nR3E-Eml5-tFYR-mJc3WT lvdisplay avocado_vg --- Logical volume --- LV Path /dev/avocado_vg/avocado_lv LV Name avocado_lv VG Name avocado_vg LV UUID nkhkFh-Oofl-GKH1-1055-3B47-0gup-yQtI1s LV Write Access read/write LV Creation host, time ltc-zz1b-lp4.aus.stglabs.ibm.com, 2022-03-02 01:32:19 -0600 LV snapshot status source of avocado_sn [active] LV Status available # open 0 LV Size 18.00 GiB Current LE 4608 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Path /dev/avocado_vg/avocado_sn LV Name avocado_sn VG Name avocado_vg LV UUID QL14R9-aVa9-nD8z-DTyg-87qL-b2yY-O30G5P LV Write Access read/write LV Creation host, time ltc-zz1b-lp4.aus.stglabs.ibm.com, 2022-03-02 01:32:20 -0600 LV snapshot status active destination for avocado_lv LV Status available # open 0 LV Size 18.00 GiB Current LE 4608 COW-table size 18.00 GiB COW-table LE 4608 Allocated to snapshot 0.00% Snapshot chunk size 4.00 KiB Segments 1 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:3 lvconvert --merge --interval 1 /dev/avocado_vg/avocado_sn Merging of volume avocado_vg/avocado_sn started. avocado_vg/avocado_lv: Merged: 100.00% BUG: Unable to handle kernel data access on write at 0x3335323d524f4ab1 Faulting instruction address: 0xc000000000cb3a2c Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries Modules linked in: dm_snapshot dm_bufio rpadlpar_io rpaphp kvm_pr kvm nf_tables libcrc32c nfnetlink tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag rfkill dm_mod sg pseries_rn g xts uio_pdrv_genirq vmx_crypto gf128mul uio nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc sc h_fq_codel ip_tables ext4 mbcache jbd2 sd_mod ibmvscsi ibmvnic scsi_transport_srp ibmveth nvme nvme_core t10_pi CPU: 17 PID: 0 Comm: swapper/17 Kdump: loaded Not tainted 5.17.0-rc5-next-20220225-autote NIP: c000000000cb3a2c LR: c0000000006740b4 CTR: c000000000674030 REGS: c0000000034ff390 TRAP: 0380 Not tainted (5.17.0-rc5-next-20220225-autotest) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 82008228 XER: 20040000 CFAR: c0000000006740b0 IRQMASK: 1 GPR00: c000000000220290 c0000000034ff630 c0000000028d3200 3335323d524f4ab1 GPR04: c000000000674030 00000001000126d5 0000000000000200 0000000000000000 GPR08: 0000000000000000 0000000000000000 0000000000000001 0000000000000001 GPR12: 0000000022000222 c00000000ffa6680 0000000000000100 0000000000000010 GPR16: 0000000000000100 0000000000000002 c000000002902108 c0000000020e7880 GPR20: c000000000674030 5deadbeef0000122 c00000077c908668 c0000000b4dce000 GPR24: c0000000acb6a800 c0000000034ff7c8 3335323d524f4a41 0000000000000100 GPR28: c000000000674030 c0000000acb6a880 3335323d524f4ab1 c0000000acb6a830 NIP [c000000000cb3a2c] _raw_spin_lock_irq+0x1c/0xa0 LR [c0000000006740b4] throtl_pending_timer_fn+0x84/0x450 Call Trace: [c0000000034ff630] [c0000000034ff670] 0xc0000000034ff670 (unreliable) [c0000000034ff650] [c000000002903a00] jiffies+0x0/0x80 [c0000000034ff710] [c000000000220290] call_timer_fn+0x50/0x200 [c0000000034ff7a0] [c000000000221c30] run_timer_softirq+0x340/0x7c0 [c0000000034ff870] [c000000000cb3cb8] __do_softirq+0x158/0x3e0 [c0000000034ff970] [c00000000014ef78] irq_exit+0x168/0x1b0 [c0000000034ff9a0] [c0000000000271c4] timer_interrupt+0x1a4/0x3e0 [c0000000034ffa00] [c000000000009a08] decrementer_common_virt+0x208/0x210 --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c NIP: c0000000000ece58 LR: c0000000009d58c8 CTR: 0000000000000000 REGS: c0000000034ffa70 TRAP: 0900 Not tainted (5.17.0-rc5-next-20220225-autotest) MSR: 800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 22000224 XER: 20040000 CFAR: 0000000000000000 IRQMASK: 0 GPR00: 0000000000000000 c0000000034ffd10 c0000000028d3200 0000000000000000 GPR04: 000000000000ffff 0000000000000000 0000000000000000 0000000000000000 GPR08: 0000000000000000 0000000000000000 800000140fc3fc00 ffffffffffffffff GPR12: 0000000000000000 c00000000ffa6680 0000000000010000 0000000000000800 GPR16: c0000000016a20e8 c00000077fff1678 ffffffffffffffff 0000000000000001 GPR20: 0000000000000001 0000000000000002 0000000000000010 c00000000282ff88 GPR24: 0000000000000001 000000f59a421dce 0000000000000000 0000000000000000 GPR28: 0000000000000001 0000000000000000 c0000000020e2098 c0000000020e20a0 NIP [c0000000000ece58] plpar_hcall_norets_notrace+0x18/0x2c LR [c0000000009d58c8] check_and_cede_processor+0x48/0x60 --- interrupt: 900 [c0000000034ffd10] [c0000000034ffd40] 0xc0000000034ffd40 (unreliable) [c0000000034ffd70] [c0000000009d5d04] dedicated_cede_loop+0x94/0x1a0 [c0000000034ffdc0] [c0000000009d2634] cpuidle_enter_state+0x2d4/0x4e0 [c0000000034ffe20] [c0000000009d28d8] cpuidle_enter+0x48/0x70 [c0000000034ffe60] [c00000000019db74] call_cpuidle+0x44/0x80 [c0000000034ffe80] [c00000000019e150] do_idle+0x340/0x390 [c0000000034fff00] [c00000000019e3d4] cpu_startup_entry+0x34/0x40 [c0000000034fff30] [c0000000000607e0] start_secondary+0x290/0x2b0 [c0000000034fff90] [c00000000000d154] start_secondary_prolog+0x10/0x14 Instruction dump: 7c0803a6 4bffffa4 60000000 60000000 60000000 3c4c01c2 3842f7f0 f821ffe1 39200001 992d0932 39200000 39400001 <7c801829> 7c044800 40c20010 7d40192d ---[ end trace 0000000000000000 ]--- -- Regard's Abdul Haleem IBM Linux Technology Center
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