Good day, Someone in our local LUG recently posed about this, he was seeing
> Jul 21 07:39:04 linux kernel: INFO: task mount:5258 blocked for more than 120 > seconds. > Jul 21 07:39:04 linux kernel: "echo 0 > > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > Jul 21 07:39:04 linux kernel: mount D 0000000000000002 0 / 5258 > 4842 0x00000080 > Jul 21 07:39:04 linux kernel: ffff880037b4fb28 0000000000000082 / > ffff880037b4fa78 ffffffff812d6ea0 > Jul 21 07:39:04 linux kernel: ffff880037b4fad8 ffffffff812ef2f9 / > ffff880037b4ffd8 ffff880037b4ffd8 He found a solution: > Googling around suggests that it might be a recurrent kernel bug (as > it appears to come and go between versions) and that it might be related to > the method the kernel uses to idle the processor. The most power-efficient > technique is to use the MWAIT instruction, which is the default on systems > that support it. The least power-efficient (and most performant) is use a > polling idle loop. In between is to use the HALT instruction. > > Since starting to boot my kernel with > > idle=halt > > (and pcie_aspm=off, FWIW, but I don't think my system was using it anyway), > I haven't had any recurrance. Does that help?