[LU-19409] osd_olc_save()) ASSERTION( ln->ln_namelen <= 255 + 1 ) failed

• Type: Bug
• Resolution: Duplicate
• Priority: Medium
• Severity: 3
• Assignee: Dongyang Li
• Reporter: Dongyang Li

Description

Sep 12 03:14:23 ddnaix2mds9 kernel: LustreError: 3072507:0:(osd_handler.c:8007:osd_olc_save()) ASSERTION( ln->ln_namelen <= 255 + 1 ) failed:
Sep 12 03:14:23 ddnaix2mds9 kernel: LustreError: 3072507:0:(osd_handler.c:8007:osd_olc_save()) LBUG
Sep 12 03:14:23 ddnaix2mds9 kernel: Pid: 3072507, comm: mdt00_007 4.18.0-477.27.1.el8_lustre.ddn17.x86_64 #1 SMP Wed Dec 20 09:59:57 UTC 2023
Sep 12 03:14:23 ddnaix2mds9 kernel: Call Trace TBD:
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] libcfs_call_trace+0x6f/0xa0 [libcfs]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] lbug_with_loc+0x3f/0x70 [libcfs]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] osd_olc_save+0x2c6/0x2f0 [osd_ldiskfs]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] osd_index_ea_lookup+0x221/0x2e0 [osd_ldiskfs]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] __mdd_lookup.isra.19+0x286/0x370 [mdd]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] mdd_lookup+0x10d/0x150 [mdd]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] mdt_rmfid+0x7a8/0x1230 [mdt]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] tgt_request_handle+0xc9c/0x1950 [ptlrpc]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] ptlrpc_server_handle_request+0x323/0xbd0 [ptlrpc]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] ptlrpc_main+0xbf1/0x1510 [ptlrpc]
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] kthread+0x134/0x150
Sep 12 03:14:23 ddnaix2mds9 kernel: [<0>] ret_from_fork+0x1f/0x40
Sep 12 03:14:23 ddnaix2mds9 kernel: Kernel panic - not syncing: LBUG
Sep 12 03:25:28 ddnaix2mds9 kernel: Linux version 4.18.0-477.27.1.el8_lustre.ddn17.x86_64 ([e-mail]) (gcc version 8.5.0 20210514 (Red Hat 8.5.0-18) (GCC)) #1 SMP Wed Dec 20 09:59:57 UTC 2023
Sep 12 03:25:28 ddnaix2mds9 kernel: Command line: BOOT_IMAGE=(hd0,msdos1)/vmlinuz-4.18.0-477.27.1.el8_lustre.ddn17.x86_64 root=/dev/mapper/VolGroup00-LogVol01 ro resume=/dev/mapper/VolGroup00-LogVol04 rd.lvm.lv=VolGroup00/LogVol01 rd.lvm.lv=VolGroup00/LogVol04 rd.plymouth=0 plymouth.enable=0 transparent_hugepage=never crashkernel=0M-10G:192M,10G-32G:512M,32G-:1024M intel_pstate=disable intel_idle.max_cstate=0 processor.max_cstate=1 slub_nomerge slab_nomerge console=tty0 console=ttyS0,115200 spectre_v2=off nopti

The issue is when constructing the lu_name, we should make sure ln_name ends with '\0'

Issue Links

• is related to: LU-15928 pass key length as part of index API