Hello and thanks for raising this issue. Do you have a reproducer on this issue? Since it's common code (memory mgnt) this needs to be handled with care, since it will affect all installations. Is it correct that you faced this issue while running the LTP Test suite? Could you provide more details, like if it was LTP running inside of an KVM guest on P10 (I assume yes), at which test did the issue occurred, how did you called LTP etc.?
Since we are asked to integrate this into 24.04, we have to follow the SRU process, which requires that we have this template filled out (https://wiki.ubuntu.com/StableReleaseUpdates#SRU_Bug_Template - we can help with that) and one section is about a test plan for this. The level of information here is probably not sufficient to completely fill out the SRU template. -- 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/2076147 Title: L2 Guest hung during LTP Tests. Back trace of paca->saved_r1 (0xc000000c1bc8bb00) (possibly stale) @ new_slab Status in The Ubuntu-power-systems project: New Status in linux package in Ubuntu: New Bug description: == Comment: #0 - SEETEENA THOUFEEK <sthou...@in.ibm.com> - 2024-08-06 00:20:57 == +++ This bug was initially created as a clone of Bug #206372 +++ ---Problem Description--- L2 Guest hung during LTP Tests. Back trace of paca->saved_r1 (0xc000000c1bc8bb00) (possibly stale) @ new_slab (edit) ---uname output--- NA ---Additional Hardware Info--- NA Contact Information = na ---Debugger Data--- NA ---Patches Installed--- NA ---Steps to Reproduce--- Tests running: SLS(io,base) LPAR Config: ============ PHYP Environment: PowerVM LPAR Hostname/IP: 10.33.2.107 Rootvg Filesystem: xfs Network Interface: Shiner-T vNIC/SR-IOV Config: n/a IO Type: SAN IO Disk Type: raw Multipath Enabled: No ------------------------------------------------------------------------------------- DUMP Config: ============ KDUMP configured: Yes XMON enabled no DUMP Available: no Machine Type = na Userspace rpm: NA The userspace tool has the following bit modes: NA Userspace tool obtained from project website: na Userspace tool common name: NA *Additional Instructions for na: -Post a private note with access information to the machine that is currently in the debugger. -Attach ltrace and strace of userspace application. please include this commit in Ubuntu 24.04 upstream commit which is solving these data store lockups: 73bc32875ee9b1881dd780308c6793fe463fe803 mm: hold PTL from the first PTE while reclaiming a large folio To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/2076147/+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
