Messages in this thread | | | Date | Sun, 27 Mar 2022 12:36:07 +0200 | 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) | From | Paul Menzel <> |
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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
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