netdev - Re: [PATCH bpf-next 1/2] x86: disable HAVE_ARCH_HUGE

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Date:   Tue, 1 Mar 2022 23:08:36 -0800
From:   Yonghong Song <yhs@...com>
To:     Song Liu <song@...nel.org>, bpf@...r.kernel.org,
        netdev@...r.kernel.org
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        kernel-team@...com, kernel test robot <oliver.sang@...el.com>
Subject: Re: [PATCH bpf-next 1/2] x86: disable HAVE_ARCH_HUGE_VMALLOC on
 32-bit x86



On 3/1/22 4:43 PM, Song Liu wrote:
> kernel test robot reported kernel BUG like:
> 
> [ 44.587744][ T1] kernel BUG at arch/x86/mm/physaddr.c:76!
> [ 44.590151][ T1] __vmalloc_area_node (mm/vmalloc.c:622 mm/vmalloc.c:2995)
> [ 44.590151][ T1] __vmalloc_node_range (mm/vmalloc.c:3108)
> [ 44.590151][ T1] __vmalloc_node (mm/vmalloc.c:3157)
> 
> which is triggered with HAVE_ARCH_HUGE_VMALLOC on 32-bit x86. Since BPF
> only uses HAVE_ARCH_HUGE_VMALLOC for x86_64, turn it off for 32-bit x86.
> 
> Reported-by: kernel test robot <oliver.sang@...el.com>
> Fixes: fac54e2bfb5b ("x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP")
> Signed-off-by: Song Liu <song@...nel.org>

Acked-by: Yonghong Song <yhs@...com>