Date: Sun, 7 Dec 2008 22:21:07 GMT From: Eric Sabban <eric+freebsd.org@lame.net> To: freebsd-gnats-submit@FreeBSD.org Subject: amd64/129488: Kernel "bug" when using smbfs in smbfs_smb.c: kernel: bug: ecnt = 1, but m_len = 0 and m_next = 0 Message-ID: <200812072221.mB7ML7Br016042@www.freebsd.org> Resent-Message-ID: <200812072230.mB7MU055003933@freefall.freebsd.org>
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>Number: 129488
>Category: amd64
>Synopsis: Kernel "bug" when using smbfs in smbfs_smb.c: kernel: bug: ecnt = 1, but m_len = 0 and m_next = 0
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-amd64
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Dec 07 22:30:00 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Eric Sabban
>Release: 7.0-RELEASE-p7
>Organization:
none
>Environment:
FreeBSD sekret.lame.net 7.0-RELEASE-p6 FreeBSD 7.0-RELEASE-p6 #3: Thu Dec 4 21:48:54 PST 2008 root@sekret.lame.net:/usr/obj/usr/src/sys/SEKRET amd64
>Description:
Shortly after booting the fileserver (leopard g5) and the smb client (freebsd 7.0p6) I mounted two disks over smb (mount //eric@g5/blah) from the server. I did an awful thing, just for the sake of it:
for i in *.avi; do file=`echo ${i} | sed -e 's/.avi$//'`; ffmpeg -i "${file}.avi" "/usr/tmp/${file}.mp4" > /tmp/ffmpeg.$$ 2>&1 & done
Ugly as that may have been, the kernel then spit out:
smb_iod_recvall: drop resp with mid 4526
smb_iod_recvall: drop resp with mid 4527
smb_iod_recvall: drop resp with mid 4528
smb_iod_recvall: drop resp with mid 4530
smb_iod_recvall: drop resp with mid 4531
bug: ecnt = 1, but m_len = 0 and m_next = 0 (please report)
Nothing really HAPPENED, but you asked me to report, so here I am.
>How-To-Repeat:
Start out a bunch of concurrent I/O from a fileserver that likely cannot handle it, I did it shortly after booting both the fileserver and the client.
>Fix:
If only I knew.
>Release-Note:
>Audit-Trail:
>Unformatted:
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