https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204614
Bug ID: 204614
Summary: LOR In mpr(4)
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: p...@nomadlogic.org
I am seeing the following LOR on 11.0-CURRENT:
lock order reversal:
1st 0xfffff8000d26bc60 CAM device lock (CAM device lock) @
/usr/src/sys/cam/cam_xpt.c:784
2nd 0xfffffe00012911c0 MPR lock (MPR lock) @ /usr/src/sys/cam/cam_xpt.c:2620
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe04608ec890
witness_checkorder() at witness_checkorder+0xe79/frame 0xfffffe04608ec910
__mtx_lock_flags() at __mtx_lock_flags+0xa4/frame 0xfffffe04608ec960
xpt_action_default() at xpt_action_default+0xb6c/frame 0xfffffe04608ec9b0
scsi_scan_bus() at scsi_scan_bus+0x1d5/frame 0xfffffe04608eca20
xpt_scanner_thread() at xpt_scanner_thread+0x15c/frame 0xfffffe04608eca70
fork_exit() at fork_exit+0x84/frame 0xfffffe04608ecab0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe04608ecab0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
Here is my system info:
[pwright@srd0013 ~]$ uname -ar
FreeBSD srd0013 11.0-CURRENT FreeBSD 11.0-CURRENT #2 r290942: Mon Nov 16
12:01:20 PST 2015 root@srd0013:/usr/obj/usr/src/sys/GENERIC amd64
[pwright@srd0013 ~]$ cd /usr/src/ && svn info
Path: .
Working Copy Root Path: /usr/src
URL: https://svn.freebsd.org/base/head
Relative URL: ^/head
Repository Root: https://svn.freebsd.org/base
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 290942
Node Kind: directory
Schedule: normal
Last Changed Author: rodrigc
Last Changed Rev: 290942
Last Changed Date: 2015-11-16 09:28:04 -0800 (Mon, 16 Nov 2015)
I have rebuild kernel+world several times over the past week and can reproduce
this.
--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
freebsd-bugs@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-bugs
To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
