Public bug reported: When qBittorrent is running heavy mmap-based I/O workload on XFS, a "kernel NULL pointer dereference" pops up in a few hours, making the process in D state and I have to reboot the whole system. Stack trace is supplied as an attachment.
Tested affected kernels (all hwe-22.04): - linux-image-5.19.0-41-generic - linux-image-5.19.0-42-generic - linux-image-5.19.0-43-generic - linux-image-6.2.0-34-generic - linux-image-6.2.0-36-generic Tested unaffected (all "stock", non-hwe): - linux-image-5.15.0-76-generic - (basically every 5.15 is unaffected) - linux-image-5.15.0-86-generic - linux-image-5.15.0-88-generic Based on information gathered online, I believe I am running into the exact same problem as <https://bugzilla.kernel.org/show_bug.cgi?id=216646>, also <https://github.com/arvidn/libtorrent/issues/6952> I believe adding upstream cbc02854331edc6dc22d8b77b6e22e38ebc7dd51 (first seen in 6.6-rc1, backported to 6.5.3 and 6.1.53) should solve this problem. Is this going to happen soon to hwe-22.04? ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: linux ** Attachment added: "kernel stacktrace at crash" https://bugs.launchpad.net/bugs/2043183/+attachment/5717801/+files/kern.log -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2043183 Title: kernel NULL pointer dereference with qBittorrent under heavy Status in linux package in Ubuntu: New Bug description: When qBittorrent is running heavy mmap-based I/O workload on XFS, a "kernel NULL pointer dereference" pops up in a few hours, making the process in D state and I have to reboot the whole system. Stack trace is supplied as an attachment. Tested affected kernels (all hwe-22.04): - linux-image-5.19.0-41-generic - linux-image-5.19.0-42-generic - linux-image-5.19.0-43-generic - linux-image-6.2.0-34-generic - linux-image-6.2.0-36-generic Tested unaffected (all "stock", non-hwe): - linux-image-5.15.0-76-generic - (basically every 5.15 is unaffected) - linux-image-5.15.0-86-generic - linux-image-5.15.0-88-generic Based on information gathered online, I believe I am running into the exact same problem as <https://bugzilla.kernel.org/show_bug.cgi?id=216646>, also <https://github.com/arvidn/libtorrent/issues/6952> I believe adding upstream cbc02854331edc6dc22d8b77b6e22e38ebc7dd51 (first seen in 6.6-rc1, backported to 6.5.3 and 6.1.53) should solve this problem. Is this going to happen soon to hwe-22.04? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2043183/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
