Hi Arturo, On Fri, 7 May 2021 11:26:51 +0200 Arturo Borrero Gonzalez <arturo@xxxxxxxxxxxxx> wrote: > Hi there, > > I got this backtrace in one of my servers. I wonder if it is known or fixed > already in a later version. Not as far as I know. At a glance: > [...] > > [Thu May 6 16:20:21 2021] nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables] > > [...] > > [Thu May 6 16:20:21 2021] asm_common_interrupt+0x1e/0x40 > [Thu May 6 16:20:21 2021] RIP: 0010:crc_41+0x0/0x1e [crc32c_intel] we probably need to add an irq_fpu_usable() check in nft_pipapo_avx2_lookup() and fall back to nft_pipapo_avx2_lookup_slow() if that returns false, but I haven't looked into this thoroughly yet. Can you reproduce this reliably? That would be helpful. -- Stefano
