You've already forked linux-rockchip
mirror of
https://github.com/armbian/linux-rockchip.git
synced 2026-01-06 11:08:10 -08:00
2578123d5b
commit 647037adcad00f2bab8828d3d41cd0553d41f3bd upstream.
This reverts commit 115d9d77bb0f9152c60b6e8646369fa7f6167593.
The pages being freed by memblock_free_late() have already been
initialized, but if they are in the deferred init range,
__free_one_page() might access nearby uninitialized pages when trying to
coalesce buddies. This can, for example, trigger this BUG:
BUG: unable to handle page fault for address: ffffe964c02580c8
RIP: 0010:__list_del_entry_valid+0x3f/0x70
<TASK>
__free_one_page+0x139/0x410
__free_pages_ok+0x21d/0x450
memblock_free_late+0x8c/0xb9
efi_free_boot_services+0x16b/0x25c
efi_enter_virtual_mode+0x403/0x446
start_kernel+0x678/0x714
secondary_startup_64_no_verify+0xd2/0xdb
</TASK>
A proper fix will be more involved so revert this change for the time
being.
Fixes: 115d9d77bb0f ("mm: Always release pages to the buddy allocator in memblock_free_late().")
Signed-off-by: Aaron Thompson <dev@aaront.org>
Link: https://lore.kernel.org/r/20230207082151.1303-1-dev@aaront.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
24 lines
417 B
C
24 lines
417 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
#ifndef _MM_INTERNAL_H
|
|
#define _MM_INTERNAL_H
|
|
|
|
/*
|
|
* Enable memblock_dbg() messages
|
|
*/
|
|
#ifdef MEMBLOCK_DEBUG
|
|
static int memblock_debug = 1;
|
|
#endif
|
|
|
|
#define pr_warn_ratelimited(fmt, ...) printf(fmt, ##__VA_ARGS__)
|
|
|
|
bool mirrored_kernelcore = false;
|
|
|
|
struct page {};
|
|
|
|
void memblock_free_pages(struct page *page, unsigned long pfn,
|
|
unsigned int order)
|
|
{
|
|
}
|
|
|
|
#endif
|