[LU-1093] unable to handle kernel paging request in target_handle_connect()

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.1.0
• Environment: https://github.com/chaos/lustre/commits/2.1.0-llnl; RHEL 6.2
• Severity: 3
• Assignee: Oleg Drokin
• Reporter: Ned Bass (Inactive)

Description

We had one occurence of this bug on a classified Lustre 2.1 OSS. Timeframe coincided with LU-1085. Like the other bugs in that window, this crash was preceded by hundreds of messages like:

LustreError: 14210:0:(genops.c:1270:class_disconnect_stale_exports()) ls5-OST0349: disconnect stale client [UUID]@<unknown>

BUG: unable to handle kernel paging request at 0000000100000017
IP: [<ffffffffa05ab58f>] target_handle_connect+0x9ff/0x2220 [ptlrpc]

Pid: 15974, comm: ll_ost_506
machine_kexec
crash_kexec
oops_end
no_context
__bad_area_nosemaphore
__do_page_fault
do_page_fault
page_fault
[exception RIP: target_handle_connect+2559]
dequeue_entity
__switch_to
ost_handle
ptlrpc_main
kernel_thread