Issue #2971 has been updated by sepherosa.
I'd suggest to run memtest on your system, I'd suspect bad memory sticks. On Wed, Dec 21, 2016 at 7:46 PM, <bugtracker-ad...@leaf.dragonflybsd.org> wrote: > Issue #2971 has been reported by peeter. > > ---------------------------------------- > Bug #2971: kernel 4.7: buildworld causes panic: Bad link elm > 0xffffffe1c766d500 prev->next != elm > http://bugs.dragonflybsd.org/issues/2971 > > * Author: peeter > * Status: New > * Priority: Normal > * Assignee: > * Category: > * Target version: > ---------------------------------------- > The panic happened while doing buildworld. I am not entirely sure that the > panic is not caused by a hardware error since prior to the panic two CRC > errors showed up in /var/log/messages. On the other hand, it seems they might > not be caused by a hardware error since prior to the panic I had seen CRC > errors a couple of times and reinstalling the system got rid of them. In more > detail, the machine has gone the following cycle of couple of times: > > 1 - system has a panic (related to the kernel module I'm developing) > 2 - hammer checkmap starts reporting errors occasionally > 3 - then CRC errors show up /var/log/messages > 4 - re-install the system and all errors vanish > 5 - go back to 1 > > However, the last time after step 3 "make buildworld" led to this panic. > > > ---Files-------------------------------- > hammer-crc-error-crash.txt (9.48 KB) > > > -- > You have received this notification because you have either subscribed to it, > or are involved in it. > To change your notification preferences, please click here: > http://bugs.dragonflybsd.org/my/account -- Tomorrow Will Never Die ---------------------------------------- Bug #2971: kernel 4.7: buildworld causes panic: Bad link elm 0xffffffe1c766d500 prev->next != elm http://bugs.dragonflybsd.org/issues/2971#change-13040 * Author: peeter * Status: New * Priority: Normal * Assignee: * Category: * Target version: ---------------------------------------- The panic happened while doing buildworld. I am not entirely sure that the panic is not caused by a hardware error since prior to the panic two CRC errors showed up in /var/log/messages. On the other hand, it seems they might not be caused by a hardware error since prior to the panic I had seen CRC errors a couple of times and reinstalling the system got rid of them. In more detail, the machine has gone the following cycle of couple of times: 1 - system has a panic (related to the kernel module I'm developing) 2 - hammer checkmap starts reporting errors occasionally 3 - then CRC errors show up /var/log/messages 4 - re-install the system and all errors vanish 5 - go back to 1 However, the last time after step 3 "make buildworld" led to this panic. ---Files-------------------------------- hammer-crc-error-crash.txt (9.48 KB) -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://bugs.dragonflybsd.org/my/account