Hi all, on a laptop where I installed Debian testing some 6 months ago, I noticed that the logs are continuously flooded with call traces like the attached snippet (taken from /var/log/kern.log ). It seems to me that it also used to happen with previous versions of the Linux kernel, but I am under the impression that, with Linux kernel 6.9.7, it got worse. I have recently upgraded to Linux kernel version 6.9.8 (provided by the distro, Debian testing, as I said), but the bug is still reproducible: $ uname -srvmo Linux 6.9.8-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.9.8-1 (2024-07-07) x86_64 GNU/Linux I see at least 12 of these call traces just after boot, before even starting X (with 'startx'). More of these call traces are sent to the logs after starting X, or after invoking 'xrandr', or after locking the X session (with XScreenSaver), ... I always see these call traces (I mean the bug is always reproducible: each time I boot, each time I call xrandr, ...). They seem to correspond to no actual issue, as far as I can tell, but they are flooding the logs with a significant flow of text... which is worrying by itself. What's wrong? How can I stop this log-filling flood? Should I black-list some module, for instance? The outputs of # lspci -vnn -d :*:0300 and of # dmidecode are attached. Also, I booted with kernel parameters 'drm.debug=0xe log_buf_len=4M ignore_loglevel' and logged in as root right after the boot. The output of # dmesg is attached. Some additional information may be found on the [Debian bug] report I had previously filed. [Debian bug]: <https://bugs.debian.org/1075770> N.B.: Please Cc me and the Debian bug address <1075770@xxxxxxxxxxxxxxx> on replies, so that the interested parties (including me!) are kept in the loop. Thanks a lot for your time and for any help you may provide! -- http://www.inventati.org/frx/ There's not a second to spare! To the laboratory! ..................................................... Francesco Poli . GnuPG key fpr == CA01 1147 9CD2 EFDF FB82 3925 3E1C 27E1 1F69 BFFE
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