[LU-16807] Resolve newer debug kernel warnings

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Fix Version/s: Lustre 2.17.0
• Affects Version/s: Lustre 2.16.0
• Environment: Newer distro running a debug kernel.
• Severity: 3
• Assignee: James A Simmons
• Reporter: James A Simmons

Description

Currently we use RHEL7 debug kernels for collecting potential kernel issues. This has two limitations. One is that for Lustre 2.17 we will be dropping RHEL7 support and second RHEL7 kernels has unique issues that are not present in newer kernels. The reason for the delay to using a newer debug kernel like RHEL8 is that it reports far more problems that needs to be resolved before we move to this target for general testing.

Issue Links

• is blocked by: LU-17419 KASAN: slab-out-of-bounds in string_nocheck in server_start_targets
• is blocked by: LU-17651 KASAN: use-after-free in lnet_net_remove_cpts
• is blocked by: LU-15899 BUG: KASAN: slab-out-of-bounds in mdt_hsm_release
• is related to: LU-17386 BUG: KASAN: stack-out-of-bounds in iov_iter_advance
• is related to: LU-15808 ptlrpc lockdep warning "do not call blocking ops when !TASK_RUNNING"
• is related to: LU-16783 DEBUG_LOCKS_WARN_ON(!lockdep_enabled()) for quota
• is related to: LU-15899 BUG: KASAN: slab-out-of-bounds in mdt_hsm_release
• is related to: LU-17650 KASAN: slab-out-of-bounds in unix_find_other on RHEL9.3
• is related to: LU-17794 UBSAN: array-index-out-of-bounds errors