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do ./xfs.run.sh "generic/437"; done >>>> >>>> allows me to reproduce this fairly quickly. >>> >>> on holiday, back monday >> >> git bisect points to commit >> 4817f70c25b6 ("x86: select ARCH_SUPPORTS_PT_RECLAIM if X86_64"). >> Qi is cc'd. >> >> After deselect PT_RECLAIM on v6.14-rc1, the issue is gone. >> At least, no splat after running for more than 300s, >> whereas the splat is usually triggered after ~20s with >> PT_RECLAIM set. > > The PT_RECLAIM mainly made the following two changes: > > 1) try to reclaim page table pages during madvise(MADV_DONTNEED) > 2) Unconditionally select MMU_GATHER_RCU_TABLE_FREE > > Will ./xfs.run.sh "generic/437" perform the madvise(MADV_DONTNEED)? Yes. See: https://github.com/kdave/xfstests/blob/master/src/t_mmap_cow_ra= ce.c#L34 > > Anyway, I will try to reproduce it locally and troubleshoot it. You will need xfstests and run "while true; do sudo ./check "generic/437"= ; done". The local.config for xfstests is at: https://lore.kernel.org/linux-mm/20250207-anbot-bankfilialen-acce9d79a2c7= @brauner/ -- Best Regards, Yan, Zi