From: Paul Menzel <pmenzel@molgen.mpg.de>
To: Song Liu <song@kernel.org>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
kernel-team@fb.com, peterz@infradead.org, x86@kernel.org,
iii@linux.ibm.com, Song Liu <songliubraving@fb.com>,
bpf@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Rick P Edgecombe <rick.p.edgecombe@intel.com>,
regressions@lists.linux.dev
Subject: Re: BUG: Bad page state in process systemd-udevd (was: [PATCH v9 bpf-next 1/9] x86/Kconfig: select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP)
Date: Sun, 27 Mar 2022 12:36:07 +0200 [thread overview]
Message-ID: <7edcd673-decf-7b4e-1f6e-f2e0e26f757a@molgen.mpg.de> (raw)
In-Reply-To: <14444103-d51b-0fb3-ee63-c3f182f0b546@molgen.mpg.de>
Dear Song,
Am 26.03.22 um 19:46 schrieb Paul Menzel:
> #regzbot introduced: fac54e2bfb5be2b0bbf115fe80d45f59fd773048
> #regzbot title: BUG: Bad page state in process systemd-udevd
> Am 04.02.22 um 19:57 schrieb Song Liu:
>> From: Song Liu <songliubraving@fb.com>
>>
>> This enables module_alloc() to allocate huge page for 2MB+ requests.
>> To check the difference of this change, we need enable config
>> CONFIG_PTDUMP_DEBUGFS, and call module_alloc(2MB). Before the change,
>> /sys/kernel/debug/page_tables/kernel shows pte for this map. With the
>> change, /sys/kernel/debug/page_tables/ show pmd for thie map.
>>
>> Signed-off-by: Song Liu <songliubraving@fb.com>
>> ---
>> arch/x86/Kconfig | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>> index 6fddb63271d9..e0e0d00cf103 100644
>> --- a/arch/x86/Kconfig
>> +++ b/arch/x86/Kconfig
>> @@ -159,6 +159,7 @@ config X86
>> select HAVE_ALIGNED_STRUCT_PAGE if SLUB
>> select HAVE_ARCH_AUDITSYSCALL
>> select HAVE_ARCH_HUGE_VMAP if X86_64 || X86_PAE
>> + select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP
>> select HAVE_ARCH_JUMP_LABEL
>> select HAVE_ARCH_JUMP_LABEL_RELATIVE
>> select HAVE_ARCH_KASAN if X86_64
>
> Testing Linus’ current master branch, Linux logs critical messages like
> below:
>
> BUG: Bad page state in process systemd-udevd pfn:102e03
>
> I bisected to your commit fac54e2bfb5 (x86/Kconfig: select
> HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP).
Sorry, I forget to mention, that this is a 32-bit (i686) userspace, but
a 64-bit Linux kernel, so it might be the same issue as mentioned in
commit eed1fcee556f (x86: Disable HAVE_ARCH_HUGE_VMALLOC on 32-bit x86),
but didn’t fix the issue for 64-bit Linux kernel and 32-bit userspace.
Kind regards,
Paul
next prev parent reply other threads:[~2022-03-27 10:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220204185742.271030-1-song@kernel.org>
2022-02-08 2:30 ` [PATCH v9 bpf-next 0/9] bpf_prog_pack allocator patchwork-bot+netdevbpf
[not found] ` <20220204185742.271030-2-song@kernel.org>
2022-03-26 0:06 ` [PATCH v9 bpf-next 1/9] x86/Kconfig: select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP Edgecombe, Rick P
2022-03-28 23:27 ` Song Liu
2022-03-29 0:18 ` Edgecombe, Rick P
2022-03-29 8:23 ` Song Liu
2022-03-29 18:39 ` Edgecombe, Rick P
2022-03-29 19:13 ` Song Liu
2022-03-29 21:36 ` Edgecombe, Rick P
2022-03-29 22:12 ` Song Liu
2022-03-26 18:46 ` BUG: Bad page state in process systemd-udevd (was: [PATCH v9 bpf-next 1/9] x86/Kconfig: select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP) Paul Menzel
2022-03-27 10:36 ` Paul Menzel [this message]
2022-03-28 6:37 ` Song Liu
2022-03-28 6:51 ` Paul Menzel
2022-03-28 19:24 ` Song Liu
2022-03-28 20:14 ` Paul Menzel
2022-03-28 21:57 ` Song Liu
2022-03-28 19:21 ` Edgecombe, Rick P
[not found] ` <20220204185742.271030-10-song@kernel.org>
2022-02-08 2:24 ` [PATCH v9 bpf-next 9/9] bpf, x86_64: use bpf_jit_binary_pack_alloc Alexei Starovoitov
2022-07-03 3:02 ` Andres Freund
2022-07-03 3:03 ` Alexei Starovoitov
2022-07-03 3:14 ` Andres Freund
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