https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-11859 Lustre <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>sles15s01:~ # modprobe lnet sles15s01:~ # lnetctl lnet configure sles15s01:~ # lnetctl net add --ip2net "tcp1(eth0) 192.168.2.[21-50]" sles15s01:~ # lnetctl net add --ip2net "tcp1 192.168.2.[21-50]" --if eth0 </pre> </div></div> <p>That second net add command causes a panic:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[ 465.582968] libcfs: loading out-of-tree module taints kernel. [ 465.583233] libcfs: module verification failed: signature and/or required key missing - tainting kernel [ 465.588080] LNet: HW NUMA nodes: 1, HW CPU cores: 8, npartitions: 4 [ 465.591029] alg: No test for adler32 (adler32-zlib) [ 480.617562] LNet: Added LNI 192.168.2.21@tcp1 [8/256/0/180] [ 480.617645] LNet: Accept secure, port 988 [ 486.991890] BUG: unable to handle kernel NULL pointer dereference at (null) [ 486.991960] IP: strlen+0x0/0x20 [ 486.991984] PGD 80000007f4f90067 P4D 80000007f4f90067 PUD 7f363c067 PMD 0 [ 486.992035] Oops: 0000 [#1] SMP PTI [ 486.992064] CPU: 2 PID: 2023 Comm: lnetctl Tainted: G OE 4.12.14-25.25-default #1 SLE15 (unreleased) [ 486.992145] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/30/2013 [ 486.992218] task: ffff8c4e44420bc0 task.stack: ffffa15f83cb0000 [ 486.992260] RIP: 0010:strlen+0x0/0x20 [ 486.992287] RSP: 0018:ffffa15f83cb3ca8 EFLAGS: 00010282 [ 486.992324] RAX: ffff8c53daa74880 RBX: ffff8c54d047cc00 RCX: ffff8c53daa74cd8 [ 486.992372] RDX: ffff8c53daa74cd8 RSI: 0000000000000000 RDI: 0000000000000000 [ 486.992419] RBP: ffff8c4e44be9540 R08: 0000350a80010f30 R09: 0000000000000000 [ 486.992467] R10: ffff8c54b4019940 R11: ffff8c4e47d0f000 R12: 0000000000000000 [ 486.992515] R13: ffff8c53daa748c8 R14: 0000000000020001 R15: ffff8c54d047c400 [ 486.993446] FS: 00007f751ba59740(0000) GS:ffff8c54ffc80000(0000) knlGS:0000000000000000 [ 486.994381] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 486.995346] CR2: 0000000000000000 CR3: 0000000813774000 CR4: 00000000000406e0 [ 486.996320] Call Trace: [ 486.996960] lnet_ni_unique_net+0x2d/0x60 [lnet] [ 486.997604] lnet_startup_lndnet+0xd4/0x920 [lnet] [ 486.998245] lnet_add_net_common+0x116/0x360 [lnet] [ 486.998869] lnet_dyn_add_ni+0x15f/0x240 [lnet] [ 486.999518] lnet_ioctl+0x23b/0x250 [lnet] [ 487.000149] notifier_call_chain+0x47/0x70 [ 487.000788] blocking_notifier_call_chain+0x3e/0x60 [ 487.001486] libcfs_ioctl+0x24e/0x470 [libcfs] [ 487.002162] ? security_capable+0x47/0x60 [ 487.002831] libcfs_psdev_ioctl+0xbe/0xd0 [libcfs] [ 487.003532] do_vfs_ioctl+0x90/0x5f0 [ 487.004199] SyS_ioctl+0x74/0x80 [ 487.004880] do_syscall_64+0x74/0x140 [ 487.005518] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 487.006171] RIP: 0033:0x7f751ade9467 [ 487.006815] RSP: 002b:00007ffd16f8e5c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 487.007483] RAX: ffffffffffffffda RBX: 00000000007172b0 RCX: 00007f751ade9467 [ 487.008139] RDX: 00000000007172b0 RSI: 00000000c0b8655f RDI: 0000000000000003 [ 487.008782] RBP: 00000000007172b0 R08: 0000000000000000 R09: 0000000000000003 [ 487.009422] R10: 000000000000055a R11: 0000000000000202 R12: 00007ffd16f8e730 [ 487.010059] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffd16f8e610 [ 487.010665] Code: f8 f6 82 e0 ea c8 8d 20 74 14 48 c7 c1 e0 ea c8 8d 48 83 c0 01 0f b6 10 f6 04 11 20 75 f3 f3 c3 66 66 2e 0f 1f 84 00 00 00 00 00 &lt;80&gt; 3f 00 48 89 f8 74 10 48 83 c7 01 80 3f 00 75 f7 48 29 c7 48 [ 487.012853] Modules linked in: ksocklnd(OEN) lnet(OEN) libcfs(OEN) af_packet iscsi_ibft iscsi_boot_sysfs vmw_vsock_vmci_transport vsock sb_edac coretemp vmwgfx crc32_pclmul ttm crc32c_intel ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd drm_kms_helper glue_helper drm cryptd joydev ppdev drm_panel_orientation_quirks syscopyarea sysfillrect vmw_balloon sysimgblt vmxnet3 pcspkr i2c_piix4 parport_pc shpchp parport vmw_vmci ac button fb_sys_fops ext4 crc16 jbd2 mbcache sr_mod cdrom ata_generic sd_mod ata_piix ahci libahci serio_raw mptspi libata scsi_transport_spi mptscsih mptbase floppy sg scsi_mod autofs4 [ 487.017956] Supported: No, Unreleased kernel [ 487.018666] CR2: 0000000000000000 </pre> </div></div> LU-11859

panic on lnetctl net add

Bug Major Open Unresolved Sonia Sharma Chris Horn Mon, 14 Jan 2019 21:23:27 +0000 Tue, 15 Jan 2019 21:56:51 +0000 Lustre 2.12.0 0 4 <p>I'm able to reproduce. investigating</p> <p>There are 3 problems:</p> <ol> <li>The whole management of legacy ip2nets is counter intuitive. For example if I have a node with 3 interfaces 192.168.122.110, 192.168.122.111, 192.168.122.112, and I do this: lnetctl net add --ip2net "tcp1 192.168.122.111" This rule will create 192.168.122.110@tcp1. One would expect that it should match against 192.168.122.111@tcp1</li> <li>Also with mutli-Rail since we could configure multiple interfaces on the same network should a rule like: "tcp1 192.168.122.*" with the interfaces in the above example create all three NIs on the same network?</li> <li>The crash is caused by not handling NULL iface parameter in lnet_ni_unique_net(). We're not handling the case where there are a mixture of NIs some with explicitly defined interface names and others without.</li> </ol> <p>I think we need to come to a conclusion whether we want to keep legacy ip2nets. ip2nets have been reimplemented in user space with a little more predictable results. And if we want to keep legacy ip2nets, do we want to keep the original behavior?</p> Development Rank 1|i009if: Rank (Obsolete) 9223372036854775807 Severity