Messages in this thread | | | Subject | Re: Unwanted activation of root-processes getting highly activated | From | Randy Dunlap <> | Date | Tue, 12 Oct 2021 13:21:51 -0700 |
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On 10/9/21 7:15 AM, Theodore Ts'o wrote: > On Fri, Oct 08, 2021 at 05:04:55PM +0000, secret wrote: >> Date: 08.10.2021 >> >> Subject/Betreff: Unwanted activation of root-processes reading and writing out >> the whole SSD/harddrive ! / Kernel-5.4.134 (pclos, AppArmor / Tor (OpenSuSE) >> usw. etc.: Freigabe von Informationen, Ausführen von Code mit höheren >> Privilegien und beliebiger Kommandos in Linux, Erzeugung, Lesen und >> Überschreiben beliebiger Dateien >> >> Hi, Greg, dear Linux experts and friends, >> >> this is one of the most dangerous and worst things, Linux can happen! >> Refering to the actual kernel 5.4.134 ( now up to the actual version 5.4.151 >> and higher, additional remark from 10.08.2021), there still is a problem with >> unexpectedly activated, highly active root-processes (making the tower-LED >> causing readwrites onto harddiscs and making the SSD/harddrive blink serious- >> madly hard for about up to 20 minutes). The whole SSD/harddrive seems to get >> read out and overwritten! >> >> The unwanted, highly by tor (pclos, mga7) resp. firejail activated kernel- >> root-processes are named >> >> kworker/u2:1-kcryptd/253:2 (escpecially this one, CPU: gt; 10%) >> kworker/0:1H-kblockd >> dmcrypt_write/2 and >> jbd2/dm2--8 > > Activity by these kernel threads indicate that some userspace program > running on your system is reading (and in the case of the > dmcrypt_write and jbd2 kernel threads, writing) data to your hard > drive. They are a symptom, not the cause of whatever is causing the > large amount of activity on your SSD/hard drive. > > It is not something that can be "patched" in the kernel. It is an > indication of some program (or possibly malware) running on your > system is doing a lot of file I/O. > > It is possible that as a result of some web site that you visited, it > is causing the web browser ("firejail", which sounds like the firefox > browser running some kind of security sandbox) to do a lot of I/O. So > the first thing you might try is to exit the web browser and see that > causes the I/O to abate. If it does, and if it starts up again when > you start the web browser and the web browser is not open on any web > pages, then you might have some misbehaving browser extension that > somehow got installed, and you might want to try clearing your browser > profile and uninstalling all of your browser extensions. > > If exiting the browser does not cause the SSD/HDD activity to stop > within half a minute or so, then some other userspace program must be > causing it. It is possible that this might be some background system > indexing (for example, rebuilding the locatedb), although normally if > you've left the system up at night, this sort of activity is done when > the system is idle typically in the wee hours of the morning. > > But it is also possible that you have some kind of malware installed > on your system, in which case the only good solution is to reinstall > it. In any case, this is not something that kernel developers can > help you with. Perhaps if there is a local Linux User's Group that > you can contact for more assistance, they can help you. If not, > you'll need to find someone who can help you with Linux system > administration. > > Cheers, > - Ted
Hi, Did you try any of what Ted suggested? and what happened when you did that?
-- ~Randy
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