Hi, Vlastimil, On Thu, Jan 12, 2023 at 08:56:59AM +0100, Vlastimil Babka wrote: > > Actually no, by "obscure" means with CONFIG_SLUB_DEBUG it wouldn't happen > anymore. But this is the opposite, it seems to happen a lot. I would have > preferred that slub debugging catches some slab misuse, but this seems > useful too. With such fail rates you can perhaps try ealier kernels than 6.0 > and eventually find the truly clean and first bad release and bisect? Thanks a lot for guidance! yeah, we reached back to until v5.14-rc1 which still has similar issue, and v5.13 is clean. new bisection was triggered then we got '7118fc2906' this was already reported as "[linus:master] [hugetlb] 7118fc2906: kernel_BUG_at_lib/list_debug.c" at https://lore.kernel.org/all/202301170941.49728982-oliver.sang@xxxxxxxxx/ and I add you, Hyeonggon, Feng and Fengwei there. hope that would be helpful.
