Public bug reported: Hello. We meet a kernel panic with next trace:
bfq_insert+0x5c/0x70 [bfq] __bfq_deactivate_entity+0xe7/0x1b0 [bfq] bfq_deactivate_entity+0x5d/0xd0 [bfq] bfq_del_bfqq_busy+0xac/0x150 [bfq] __bfq_bfqq_expire+0x64/0xd0 [bfq] bfq_bfqq_expire+0x331/0x930 [bfq] ? try_to_wake_up+0x235/0x5f0 ? bfq_dispatch_request+0xf70/0xf70 [bfq] bfq_idle_slice_timer+0x6d/0xc0 [bfq] __hrtimer_run_queues+0x10f/0x280 hrtimer_interrupt+0xe7/0x230 smp_apic_timer_interrupt+0x6f/0x130 apic_timer_interrupt+0xf/0x20 After little research i found out that bug was reported by Fedora and openSUSE community earlier. https://bugzilla.redhat.com/show_bug.cgi?id=2022819 https://bugzilla.opensuse.org/show_bug.cgi?id=1192714 And patch for this bug already exist https://lore.kernel.org/all/20220401102325.17617-1-j...@suse.cz/ Since there are no similar reports in the Ubuntu community, I decided to make this report. Full dmesg log in attachments. Also have a crash dump file, can attach that file if it necessary. ------------------------------------------------------------------------ Environment: Distributor ID: Ubuntu Description: Ubuntu 18.04.6 LTS Release: 18.04 Codename: bionic kernel: 5.4.0-110-generic #124~18.04.1-Ubuntu ** Affects: linux-hwe (Ubuntu) Importance: Undecided Status: New ** Tags: bionic ** Attachment added: "dmesg_bfq_deactivate_entity" https://bugs.launchpad.net/bugs/1975501/+attachment/5592301/+files/dmesg_bfq_deactivate_entity -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe in Ubuntu. https://bugs.launchpad.net/bugs/1975501 Title: bfq_deactivate_entity: NULL pointer dereference Status in linux-hwe package in Ubuntu: New Bug description: Hello. We meet a kernel panic with next trace: bfq_insert+0x5c/0x70 [bfq] __bfq_deactivate_entity+0xe7/0x1b0 [bfq] bfq_deactivate_entity+0x5d/0xd0 [bfq] bfq_del_bfqq_busy+0xac/0x150 [bfq] __bfq_bfqq_expire+0x64/0xd0 [bfq] bfq_bfqq_expire+0x331/0x930 [bfq] ? try_to_wake_up+0x235/0x5f0 ? bfq_dispatch_request+0xf70/0xf70 [bfq] bfq_idle_slice_timer+0x6d/0xc0 [bfq] __hrtimer_run_queues+0x10f/0x280 hrtimer_interrupt+0xe7/0x230 smp_apic_timer_interrupt+0x6f/0x130 apic_timer_interrupt+0xf/0x20 After little research i found out that bug was reported by Fedora and openSUSE community earlier. https://bugzilla.redhat.com/show_bug.cgi?id=2022819 https://bugzilla.opensuse.org/show_bug.cgi?id=1192714 And patch for this bug already exist https://lore.kernel.org/all/20220401102325.17617-1-j...@suse.cz/ Since there are no similar reports in the Ubuntu community, I decided to make this report. Full dmesg log in attachments. Also have a crash dump file, can attach that file if it necessary. ------------------------------------------------------------------------ Environment: Distributor ID: Ubuntu Description: Ubuntu 18.04.6 LTS Release: 18.04 Codename: bionic kernel: 5.4.0-110-generic #124~18.04.1-Ubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1975501/+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
