Sleeping in "rip6_output" with the following non-sleepable locks held

Robert Watson rwatson at FreeBSD.org
Tue Aug 10 21:16:25 PDT 2004


On Wed, 11 Aug 2004, Jun Kuriyama wrote:

> This is today's -current on amd64 box:

Hmm.  There was a patch floating around for this based on my suggestion of
converting this to an M_DONTWAIT and then handling the error case, but I
don't seem to be able to find it in my mailbox.  Do you have a copy? 

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert at fledge.watson.org      Principal Research Scientist, McAfee Research


> 
> Sleeping in "rip6_output" with the following non-sleepable locks held:
> exclusive sleep mutex inp (raw6inp) r = 0 (0xffffff002f11f0e8) locked @ netinet6/raw_ip6.c:347
> exclusive sleep mutex rip r = 0 (0xffffffff807cbf48) locked @ netinet6/raw_ip6.c:745
> KDB: stack backtrace:
> witness_warn() at witness_warn+0x2eb
> rip6_output() at rip6_output+0x1d2
> rip6_send() at rip6_send+0xc1
> sosend() at sosend+0x654
> kern_sendit() at kern_sendit+0xf4
> sendit() at sendit+0x5f
> sendmsg() at sendmsg+0x87
> syscall() at syscall+0x4c3
> Xfast_syscall() at Xfast_syscall+0xa8
> --- syscall (28, FreeBSD ELF64, sendmsg), rip = 0x20068c380, rsp = 0x7fffffffed78, rbp = 0x1 ---
> 
> 
> -- 
> Jun Kuriyama <kuriyama at imgsrc.co.jp> // IMG SRC, Inc.
>              <kuriyama at FreeBSD.org> // FreeBSD Project
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