Hi, Quick heads up: I just ran into issues after updating to pve-kernel-5.3.18-2-pve (also affects 5.4). The gist is that Intel QAT drivers newly added to that kernel are causing hangs on some Spermicros with encrypted ceph OSDs.
LP Bug (comments #19/#20): https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1845959 Typical dmesg call-trace attached. Blacklisting qat_c3xxx as suggested in the LP Bug resolves the problems in my case. Cheers, Lorenz
[ 243.049627] INFO: task kworker/u16:3:308 blocked for more than 120 seconds. [ 243.049676] Tainted: P O 5.3.18-2-pve #1 [ 243.049709] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 243.049754] kworker/u16:3 D 0 308 2 0x80004000 [ 243.049765] Workqueue: kcryptd/253:8 kcryptd_crypt [dm_crypt] [ 243.049767] Call Trace: [ 243.049775] __schedule+0x2bb/0x660 [ 243.049778] schedule+0x33/0xa0 [ 243.049780] schedule_timeout+0x205/0x300 [ 243.049788] ? qat_alg_ablkcipher_decrypt+0x227/0x280 [intel_qat] [ 243.049790] wait_for_completion+0xb7/0x140 [ 243.049793] ? wake_up_q+0x80/0x80 [ 243.049796] crypt_convert+0xaab/0xf90 [dm_crypt] [ 243.049798] ? __switch_to_asm+0x40/0x70 [ 243.049800] ? __switch_to_asm+0x34/0x70 [ 243.049802] ? __switch_to_asm+0x40/0x70 [ 243.049804] ? __switch_to_asm+0x34/0x70 [ 243.049805] ? __switch_to_asm+0x40/0x70 [ 243.049808] ? __switch_to_asm+0x40/0x70 [ 243.049809] ? __switch_to_asm+0x34/0x70 [ 243.049811] ? __switch_to_asm+0x40/0x70 [ 243.049813] ? __switch_to_asm+0x34/0x70 [ 243.049816] kcryptd_crypt+0xca/0x380 [dm_crypt] [ 243.049819] ? finish_task_switch+0xd5/0x270 [ 243.049822] process_one_work+0x20f/0x3d0 [ 243.049825] worker_thread+0x34/0x400 [ 243.049827] kthread+0x120/0x140 [ 243.049829] ? process_one_work+0x3d0/0x3d0 [ 243.049830] ? __kthread_parkme+0x70/0x70 [ 243.049832] ret_from_fork+0x35/0x40
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