Sophos versions 8.0-9.1 causes Mac to restart

The most current version (9.1.5) includes updates to address known issues related to this message. Can you check what version you have installed?

Hi I had installed version 9.0.8. atm I dont have any protection on my mac(which somewhat concerns me). Ill try that one. thanks .

how do i get the newer version? it keeps downloading the same version as before that kept killing the mac..

forget the last quesiton. Ive installed 9.0.8 then it did an update so now its saying 9.1.5...

so well see over night how we go...

Hi 

futher to my messages last week, My Imac crashed last night. 

the report suggests it was Sophos. 

Anonymous UUID: 7544B4B1-82B0-C205-52C0-63AE1EA29DE5

Mon Oct 13 00:52:57 2014
panic(cpu 2 caller 0xffffff802bddb680): "vnode_rele_ext: vp 0xffffff8074113a50 usecount -ve : -1. v_tag = 16, v_type = 1, v_flag = 84800."@/SourceCache/xnu/xnu-2422.115.4/bsd/vfs/vfs_subr.c:1788
Backtrace (CPU 2), Frame : Return Address
0xffffff831700b5d0 : 0xffffff802bc22f79
0xffffff831700b650 : 0xffffff802bddb680
0xffffff831700b690 : 0xffffff7fac9815cb
0xffffff831700b6b0 : 0xffffff7fac980e34
0xffffff831700b9e0 : 0xffffff7fac982ea8
0xffffff831700ba20 : 0xffffff802bfb6271
0xffffff831700ba80 : 0xffffff802bde055d
0xffffff831700bad0 : 0xffffff802bdf50e0
0xffffff831700bb70 : 0xffffff802bde6c65
0xffffff831700bc20 : 0xffffff802bde7522
0xffffff831700bf50 : 0xffffff802c040c63
0xffffff831700bfb0 : 0xffffff802bcf4176
Kernel Extensions in backtrace:
com.sophos.kext.sav(9.1.55)[00000000-0000-0000-0000-000000000000]@0xffffff7fac980000->0xffffff7fac984fff

Not sure if I should be taking Sophos off again or what?? any suggestions?

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lousullivan wrote:

Hi 

futher to my messages last week, My Imac crashed last night. 

the report suggests it was Sophos.

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Do you have any entries in your system.log messages (in Console) that contain the text "[EWOULDBLOCK]" - I'd be interested to know what those log messages say, it might help pinpoint what is happening.

where do I find this file?

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lousullivan wrote:

where do I find this file?

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Open up Console, system.log will be listed on the left pane. There is a search box in the upper right corner of the window.

I have attached the System log..

when I start my Imac up it tells me the system crashes and when click on report I am told: 

your computer was restarted because of a problem: this may have been caused by the currently installed version of Sophos Anti-Virus on-acess scanner. would you like to move it to the trash?i click on more info it takes me to the page below:

http://support.apple.com/kb/HT200555?viewlocale=en_AU&locale=en_US

OS X Mavericks: Sophos Anti-Virus on-access scanner versions 8.0 - 9.1 may cause unexpected restarts
Sophos Anti-Virus on-access scanner versions 8.0 - 9.1 may cause OS X Mavericks to unexpectedly restart (kernel panic).

The on-access scanner feature of Sophos Anti-Virus versions 8.0 - 9.1 may cause OS X to stop responding and unexpectedly restart. If this happens, you are presented with an option to move related components of this application to the Trash. Doing this disables the on-access scanner software to prevent this issue from happening again.

For more information, contact the developer of Sophos Anti-Virus to see if an update is available that is compatible with the version of OS X you are using.

Thanks for the log. Surprisingly, I did not find the text I was expecting (our kernel extension never logged anything about problems). Very odd.

I notice that you have an NTFS driver installed from Paragon, are you actively using it? Is there any correlation with accessing / using / unmounting an NTFS drive and when you experience the panic? I'm definitely not shuffling blame, just saying that we don't have any experience with the two kernel drivers on the same system. Its just not something we ever attempted to test. Kernel drivers are finiky things, and co-existance can sometimes be complicated.