[LU-3306] layout.c:1946:__req_capsule_get()) @@@ Wrong buffer for field `name' (6 of 8) in format `LDLM_INTENT_OPEN': 3 vs. 0 (client)

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.4.0, Lustre 2.5.0
• Affects Version/s: Lustre 2.4.0
• Severity: 3
• Assignee: Oleg Drokin
• Reporter: Oleg Drokin

Description

Fresh master checkout, hit this in racer:

[61845.122433] LustreError: 7885:0:(pack_generic.c:770:lustre_msg_string()) can't unpack short string in msg ffffc90006c54ff0 buffer[6] len 3: strlen 1
[61845.131556] LustreError: 7885:0:(layout.c:1946:__req_capsule_get()) @@@ Wrong buffer for field `name' (6 of 8) in format `LDLM_INTENT_OPEN': 3 vs. 0 (client)
[61845.131557]   req@ffff88003c01e7f0 x1434586131710596/t0(0) o101->13783025-666d-77a1-7c55-b4fef65827f1@0@lo:0/0 lens 576/0 e 0 to 0 dl 1368130054 ref 1 fl Interpret:/0/ffffffff rc 0/-1
[61845.133834] LustreError: 7885:0:(mdt_handler.c:1727:mdt_reint_internal()) Can't unpack reint, rc -14
[61845.134310] LustreError: 7885:0:(lustre_mdt.h:66:err_serious()) ASSERTION( -rc < ESERIOUS ) failed: 
[61845.134747] LustreError: 7885:0:(lustre_mdt.h:66:err_serious()) LBUG
[61845.134992] Pid: 7885, comm: mdt00_008
[61845.135199] 
[61845.135199] Call Trace:
[61845.135558]  [<ffffffffa0af28a5>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
[61845.135817]  [<ffffffffa0af2ea7>] lbug_with_loc+0x47/0xb0 [libcfs]
[61845.136103]  [<ffffffffa05c32eb>] mdt_enqueue+0x10b/0x110 [mdt]
[61845.140089]  [<ffffffffa05b4d28>] mdt_handle_common+0x648/0x1660 [mdt]
[61845.140375]  [<ffffffffa05f0f25>] mds_regular_handle+0x15/0x20 [mdt]
[61845.140681]  [<ffffffffa12a66c8>] ptlrpc_server_handle_request+0x3a8/0xc70 [ptlrpc]
[61845.141158]  [<ffffffffa0af35ee>] ? cfs_timer_arm+0xe/0x10 [libcfs]
[61845.141448]  [<ffffffffa0b04e9f>] ? lc_watchdog_touch+0x6f/0x170 [libcfs]
[61845.142006]  [<ffffffffa129de11>] ? ptlrpc_wait_event+0xb1/0x2a0 [ptlrpc]
[61845.142386]  [<ffffffff81054613>] ? __wake_up+0x53/0x70
[61845.143683]  [<ffffffffa12a79d5>] ptlrpc_main+0xa45/0x1650 [ptlrpc]
[61845.143981]  [<ffffffffa12a6f90>] ? ptlrpc_main+0x0/0x1650 [ptlrpc]
[61845.144265]  [<ffffffff8100c10a>] child_rip+0xa/0x20
[61845.144542]  [<ffffffffa12a6f90>] ? ptlrpc_main+0x0/0x1650 [ptlrpc]
[61845.144854]  [<ffffffffa12a6f90>] ? ptlrpc_main+0x0/0x1650 [ptlrpc]
[61845.145134]  [<ffffffff8100c100>] ? child_rip+0x0/0x20
[61845.145399] 
[61845.220106] Kernel panic - not syncing: LBUG

Crashdump and modules are in /exports/crashdumps/192.168.10.210-2013-05-09-16\:06\:54/
source tag master-20130509