Details
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Bug
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Resolution: Fixed
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Major
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Lustre 2.12.0
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None
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IML 5-devel on VirtualBox
Lustre 2.12.0
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3
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9223372036854775807
Description
While investigating LU-9525 I ran across this behavior.
# modprobe osd-zfs # lctl list_nids 192.168.56.20@tcp # lustre_rmmod lnet
Wait a minute for (I assume) iml-agent to try to get lnet status and the following panic results:
[ 68.383777] BUG: unable to handle kernel paging request at ffffffffc0959ca0 [ 68.388689] IP: [<ffffffffc089b654>] lnet_debugfs_read+0x24/0x40 [libcfs] [ 68.391817] PGD 11c14067 PUD 11c16067 PMD 16472067 PTE 0 [ 68.402787] Oops: 0000 [#1] SMP [ 68.404489] Modules linked in: libcfs(OE) nfsv3 nfs_acl rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc zfs(POE) zunicode(POE) zavl(POE) icp(POE) ppdev iosf_mbi crc32_pclmul zcommon(POE) znvpair(POE) ghash_clmulni_intel spl(OE) aesni_intel lrw gf128mul glue_helper ablk_helper cryptd pcspkr sg parport_pc parport video i2c_piix4 ip_tables ext4 mbcache jbd2 sr_mod cdrom ata_generic sd_mod crc_t10dif crct10dif_generic pata_acpi crct10dif_pclmul crct10dif_common crc32c_intel serio_raw ahci ata_piix libahci libata e1000 dm_mirror dm_region_hash dm_log dm_mod [last unloaded: lnet] [ 68.438921] CPU: 1 PID: 4853 Comm: lctl Tainted: P OE ------------ 3.10.0-957.el7_lustre.x86_64 #1 [ 68.444438] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 68.448776] task: ffff893597914100 ti: ffff893596f44000 task.ti: ffff893596f44000 [ 68.452887] RIP: 0010:[<ffffffffc089b654>] [<ffffffffc089b654>] lnet_debugfs_read+0x24/0x40 [libcfs] [ 68.458006] RSP: 0018:ffff893596f47ec8 EFLAGS: 00010246 [ 68.460928] RAX: ffffffffc089b630 RBX: ffff89359ead7900 RCX: ffff893596f47ec8 [ 68.465870] RDX: 0000000000cd50c0 RSI: 0000000000000000 RDI: ffffffffc0959c80 [ 68.475879] RBP: ffff893596f47ed0 R08: ffff893596f47f18 R09: 0000000000000000 [ 68.479744] R10: 00007fff4e9a0f60 R11: 0000000000000246 R12: 0000000000cd50c0 [ 68.483282] R13: ffff893596f47f18 R14: 0000000000001000 R15: 0000000000000000 [ 68.487155] FS: 00007fd435e89740(0000) GS:ffff89359fd00000(0000) knlGS:0000000000000000 [ 68.492060] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.495707] CR2: ffffffffc0959ca0 CR3: 0000000017940000 CR4: 00000000000606e0 [ 68.499746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.503180] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.507283] Call Trace: [ 68.508720] [<ffffffff94640f0f>] vfs_read+0x9f/0x170 [ 68.511351] [<ffffffff94641dcf>] SyS_read+0x7f/0xf0 [ 68.513924] [<ffffffff94b74d21>] ? system_call_after_swapgs+0xae/0x146 [ 68.519936] [<ffffffff94b74ddb>] system_call_fastpath+0x22/0x27 [ 68.524797] [<ffffffff94b74d21>] ? system_call_after_swapgs+0xae/0x146 [ 68.529162] Code: 5b 41 5c 41 5d 5d c3 0f 1f 44 00 00 55 49 89 c8 48 89 e5 48 83 ec 08 48 8b bf a8 00 00 00 48 89 55 f8 48 8d 4d f8 48 89 f2 31 f6 <48> 8b 47 20 e8 23 b5 ee d3 48 98 48 85 c0 48 0f 44 45 f8 c9 c3 [ 68.545905] RIP [<ffffffffc089b654>] lnet_debugfs_read+0x24/0x40 [libcfs] [ 68.549423] RSP <ffff893596f47ec8> [ 68.551714] CR2: ffffffffc0959ca0 [ 68.553976] ---[ end trace 31c5ad0e3a22fb28 ]--- [ 68.556862] Kernel panic - not syncing: Fatal exception [ 68.559764] Kernel Offset: 0x13400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
