[DragonFlyBSD - Bug #1661] panic on password entry mount smb filesystem

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #1661 has been updated by notapipe.


I can confirm this bug under DragonFly 4.6.0

Fatal trap 9: general protection fault while in kernel mode
[...]
CPU3 stopping CPUs: 
 stopped
dscheck(vn2): b_count 2 is not on a sector boundary (ssize 512)
Stopped at [...]

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Bug #1661: panic on password entry mount smb filesystem
http://bugs.dragonflybsd.org/issues/1661#change-12959

* Author: vsrinivas
* Status: In Progress
* Priority: Normal
* Assignee: 
* Category: VFS subsystem
* Target version: 4.2.x
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Hi,

When attempting to mount an SMB filesystem, I get a 'Fatal trap 12: page fault
while in kernel mode' after the password is requested by mount_smbfs. Tested on
a daily snapshot from 1/23/2010.

# mount_smbfs -I 10.0.2.4 //guest at 10.0.2.4/data /mnt

With a 1/23/2010 GENERIC kernel, the backtrace:

prison_remote_ip(c17131d0,cc759cd0) at prison_remote_ip+0x1b
tcp_usr_connect(c16b5f00,cc759cd0,c17131d0,0,ca2c2d64) at tcp_usr_connect+0x8f
netmsg_pru_connect(cc759c28,c06d4ee0,c06d5278,ca3c3d84,c03c7e5f) at
netmsg_pru_connect+0x13
netmsg_service(cc759c28,c06d4ee0,ff800000) at netmsg_service+0x58
tcpmsg_service_loop(0,0,0,0,0) at tcpmsg_service_loop+0x1d
lwkt_exit() at lwkt_exit

I can upload a coredump and vmcore if needed,

Thanks,
--vs



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