[LU-9848] LBUG: ASSERTION( len >= (24) && (len & 0x7) == 0 ) failed

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.10.1, Lustre 2.11.0
• Labels: llnl
• Environment: Linux version 3.10.0-514.26.2.1chaos.ch6_1.x86_64; Lustre 2.8.0_9.chaos; ZFS v0.7.0-8_g0f976d6
• Severity: 3
• Assignee: Lai Siyao
• Reporter: Olaf Faaland

Description

LustreError: 43470:0:(llog_osd.c:165:llog_osd_pad()) ASSERTION( len >= (24) && (len & 0x7) == 0 ) failed:
LustreError: 43470:0:(llog_osd.c:165:llog_osd_pad()) LBUG
Pid: 43470, comm: mdt00_081

Kernel panic - not syncing: LBUG
CPU: 2 PID: 43470 Comm: mdt00_081 Tainted: P           OE  ------------   3.10.0-514.26.2.1chaos.ch6_1.x86_64 #1
Hardware name: Intel Corporation S2600WTTR/S2600WTTR, BIOS SE5C610.86B.01.01.0016.033120161139 03/31/2016
 ffffffffa0c50e0f 000000005a5d14f4 ffff887dd2457700 ffffffff8169d4bc
 ffff887dd2457780 ffffffff816966ff ffffffff00000008 ffff887dd2457790
 ffff887dd2457730 000000005a5d14f4 ffffffffa0d861e7 0000000000000246
Call Trace:
 [<ffffffff8169d4bc>] dump_stack+0x19/0x1b
 [<ffffffff816966ff>] panic+0xe3/0x1f2
 [<ffffffff810a6ac0>] ? call_usermodehelper_freeinfo+0x20/0x30
 [<ffffffffa0c34deb>] lbug_with_loc+0xab/0xc0 [libcfs]
 [<ffffffffa0d1727a>] llog_osd_pad+0x3ca/0x440 [obdclass]
 [<ffffffffa0d19967>] llog_osd_write_rec+0xe87/0x14d0 [obdclass]
 [<ffffffffa0d0b8da>] llog_write_rec+0xaa/0x280 [obdclass]
 [<ffffffffa0d100c0>] llog_cat_add_rec+0x210/0x8e0 [obdclass]
 [<ffffffffa0d08a3a>] llog_add+0x7a/0x1a0 [obdclass]
 [<ffffffffa1029f7c>] ? sub_updates_write+0x7f6/0xef8 [ptlrpc]
 [<ffffffffa102a373>] sub_updates_write+0xbed/0xef8 [ptlrpc]
 [<ffffffffa101899f>] top_trans_stop+0x62f/0x970 [ptlrpc]
 [<ffffffffa134c399>] lod_trans_stop+0x259/0x340 [lod]
 [<ffffffffa13c0c32>] ? mdd_links_rename+0x312/0x5d0 [mdd]
 [<ffffffffa13daafd>] mdd_trans_stop+0x1d/0x25 [mdd]
 [<ffffffffa13c5c18>] mdd_link+0x2e8/0x930 [mdd]
 [<ffffffffa0fa42d2>] ? lustre_msg_get_versions+0x22/0xf0 [ptlrpc]
 [<ffffffffa1296b6e>] mdt_reint_link+0xade/0xc30 [mdt]
 [<ffffffff8132f4d2>] ? strlcpy+0x42/0x60
 [<ffffffffa1298ef0>] mdt_reint_rec+0x80/0x210 [mdt]
 [<ffffffffa127bdf1>] mdt_reint_internal+0x5e1/0x990 [mdt]
 [<ffffffffa1285a07>] mdt_reint+0x67/0x140 [mdt]
 [<ffffffffa1004425>] tgt_request_handle+0x915/0x1320 [ptlrpc]
 [<ffffffffa0fb0e7b>] ptlrpc_server_handle_request+0x21b/0xa90 [ptlrpc]
 [<ffffffffa0c41748>] ? lc_watchdog_touch+0x68/0x180 [libcfs]
 [<ffffffffa0faea4b>] ? ptlrpc_wait_event+0xab/0x350 [ptlrpc]
 [<ffffffff810c8aa2>] ? default_wake_function+0x12/0x20
 [<ffffffff810bdb18>] ? __wake_up_common+0x58/0x90
 [<ffffffffa0fb4f20>] ptlrpc_main+0xa90/0x1db0 [ptlrpc]
 [<ffffffff8102a569>] ? __switch_to+0xd9/0x4e0
 [<ffffffffa0fb4490>] ? ptlrpc_register_service+0xe40/0xe40 [ptlrpc]
 [<ffffffff810b3a0f>] kthread+0xcf/0xe0

Appears to be regression of LU-8422

Issue Links

• is related to: LU-8422 llog_osd.c:165:llog_osd_pad()) ASSERTION( len >= (24) && (len & 0x7) == 0 )