Date: Mon, 24 Jun 2013 18:22:17 -0400 From: Steven Kreuzer <skreuzer@freebsd.org> To: freebsd-arm@freebsd.org, current@freebsd.org Subject: lock order reversal in r252098 Message-ID: <CAFFB%2BpS%2BhAxT_hbQFoA89OCGUp3ha52kpjE1xFq7Pvx77=4qJQ@mail.gmail.com>
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Hello-
I am running 10.0-CURRENT #0 r252098 on a beaglebone and I am getting the
occasional LOR when reading/writing in an nfs mount
lock order reversal:
1st 0xc1c0a150 newnfs (newnfs) @ /usr/src/sys/kern/vfs_syscalls.c:4064
2nd 0xc6a5e278 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2311
3rd 0xc1c12150 newnfs (newnfs) @ /usr/src/sys/kern/vfs_subr.c:2099
KDB: stack backtrace:
end() at 0xd52035b0
scp=0xd52035b0 rlv=0xc05108e0 (db_trace_self+0x14)
rsp=0xd5203498 rfp=0xc057394f
Bad frame pointer: 0xc057394f
Shortly after, the beaglebone locks up and requires a power cycle
If anyone has any hints or can spare some cycles to help me debug this
issue, please let me know
Many Thanks
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