[LU-1336] OSS GPF at ptlrpc_send_reply+0x470

Mon, 30 Apr 2012 11:55:34 +0000

Back trace looks like this:

machine_kexec
crash_kexec
oops_end
die
do_general_protection
general_protection
[exception RIP: ptlrpc_send_replay+1136]
ptlrpc_send_error
target_send_replay_msg
target_send_reply
ost_handle
ptlrpc_main
kernel_thread

That RIP resolves to lustre/ptlrpc/niobuf.c:436 which in our tree is here:

434         /* There may be no rq_export during failover */
435 
436         if (unlikely(req->rq_export && req->rq_export->exp_obd &&
437                      req->rq_export->exp_obd->obd_fail)) { 
438                 /* Failed obd's only send ENODEV */
439                 req->rq_type = PTL_RPC_MSG_ERR;
440                 req->rq_status = -ENODEV;
441                 CDEBUG(D_HA, "sending ENODEV from failed obd %d\n",
442                        req->rq_export->exp_obd->obd_minor);
443         }

Server was handling many client reconnects, under similar conditions as reported in ~~LU-1085~~, ~~LU-1092~~, ~~LU-1093~~, and ~~LU-1094~~.

Whamcloud Community JIRA

[LU-1336] OSS GPF at ptlrpc_send_reply+0x470