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List:       dragonfly-bugs
Subject:    [DragonFlyBSD - Bug #3170] repeatable nfsd crash
From:       bugtracker-admin () leaf ! dragonflybsd ! org
Date:       2019-02-01 15:24:13
Message-ID: redmine.journal-13599.20190201152413.7a6f6e21d02bb7ed () leaf ! dragonflybsd ! org
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Issue #3170 has been updated by tse.


Thanks guys,

https://drive.google.com/open?id=1u-dD43h3S0aNO2NVPBXUj6mPOHCHxJiF
https://drive.google.com/open?id=1yWEM3sDTLI18E-z2UqdXNCYdfrwdQaKi

Hopefully these will work. Seems not corrupt, but also no stacktrace. The crash also \
happens when just unpacking the google sdk tar onto the nfs share (when doing it from \
within linux on qemu)

----------------------------------------
Bug #3170: repeatable nfsd crash
http://bugs.dragonflybsd.org/issues/3170#change-13599

* Author: tse
* Status: New
* Priority: Normal
* Assignee: 
* Category: 
* Target version: Latest stable
----------------------------------------
I created a linux vm on qemu with nfs shared from Dragonfly. Reason being so I could \
install the go-app-engine for google cloud. Could read/write small files to the nfs \
share. But running google-cloud-sdk/install.sh from the vm on the nfs share quickly \
causes this error:

panic: assertion "m->m_type == MT_DATA" failed in m_dup_data at \
/usr/src/sys/kern/uipc_mbuf.c:1820 cpuid = 1
Trace beginning at frame 0xfffff802f71bf500
m_dup_data() at m_dup_data+0x12b 0xffffffff805e8a7b 
m_dup_data() at m_dup_data+0x12b 0xffffffff805e8a7b 
nfs_realign.isra.3() at nfs_realign.isra.3+0x48 0xffffffff807177c8 
nfsrv_rcv() at nfsrv_rcv+0x490 0xffffffff8071c110 
sys_nfssvc() at sys_nfssvc+0x13e7 0xffffffff8071fcf7 
syscall2() at syscall2+0x238 0xffffffff8098c0d8

I've switched from nfsd to unfsd, and that works fine. Though it took me a day of \
fiddling for unfsd, just because I didn't know not to run it with mountd. Hehe, such \
is life :)

Sorry, I'm sure it would take me many multiple months of work to think of supplying a \
patch for this bug

But I'm happy. It's my first time to setup an nfs share and linux vm, and now I can \
use them to access things from Dragonfly like google app engine, or clang sanitizers \
to hold my hand when I'm writing c

---Files--------------------------------
core.txt.3 (296 KB)


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