Re: [PATCH] uprobes: use vm_special_mapping close() functionality
From: Oleg Nesterov <oleg@redhat.com>
Date: 2024-09-03 19:32:56
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Possibly related (same subject, not in this thread)
- 2024-09-04 · Re: [PATCH] uprobes: use vm_special_mapping close() functionality · Andrew Morton <akpm@linux-foundation.org>
- 2024-09-04 · Re: [PATCH] uprobes: use vm_special_mapping close() functionality · Michael Ellerman <mpe@ellerman.id.au>
- 2024-09-03 · Re: [PATCH] uprobes: use vm_special_mapping close() functionality · Linus Torvalds <torvalds@linux-foundation.org>
- 2024-09-03 · Re: [PATCH] uprobes: use vm_special_mapping close() functionality · Sven Schnelle <svens@linux.ibm.com>
- 2024-09-03 · Re: [PATCH] uprobes: use vm_special_mapping close() functionality · Sven Schnelle <svens@linux.ibm.com>
On 09/03, Linus Torvalds wrote:
On Tue, 3 Sept 2024 at 02:09, Oleg Nesterov [off-list ref] wrote:quoted
but with or without this fix __create_xol_area() also needs area->xol_mapping.mremap = NULL;I think the whole thing needs to be zeroed out.
Agreed,
Either use kzalloc(),
This is what Sven did in [PATCH] uprobes: use kzalloc to allocate xol area https://lore.kernel.org/all/20240903102313.3402529-1-svens@linux.ibm.com/ (local) Oleg.