Re: [PATCH v3 01/12] powerpc: mm/fault: Fix kfence page fault reporting

Michael Ellerman writes: > Hi Ritesh, > > "Ritesh Harjani (IBM)" writes: >> copy_from_kernel_nofault() can be called when doing read of /proc/kcore. >> /proc/kcore can have some unmapped kfence objects which when read via >> copy_from_kernel_nofault() can cause page faults. Since *_nofault() >>

Re: [PATCH v3 01/12] powerpc: mm/fault: Fix kfence page fault reporting

Hi Ritesh, "Ritesh Harjani (IBM)" writes: > copy_from_kernel_nofault() can be called when doing read of /proc/kcore. > /proc/kcore can have some unmapped kfence objects which when read via > copy_from_kernel_nofault() can cause page faults. Since *_nofault() > functions define their own fixup tab

[PATCH v3 01/12] powerpc: mm/fault: Fix kfence page fault reporting

copy_from_kernel_nofault() can be called when doing read of /proc/kcore. /proc/kcore can have some unmapped kfence objects which when read via copy_from_kernel_nofault() can cause page faults. Since *_nofault() functions define their own fixup table for handling fault, use that instead of asking kf

Re: [PATCH v3 01/12] powerpc: mm/fault: Fix kfence page fault reporting

Le 18/10/2024 à 19:29, Ritesh Harjani (IBM) a écrit : copy_from_kernel_nofault() can be called when doing read of /proc/kcore. /proc/kcore can have some unmapped kfence objects which when read via copy_from_kernel_nofault() can cause page faults. Since *_nofault() functions define their own fi