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riscv: Fix ptdump when KASAN is enabled 

The KASAN shadow region was moved next to the kernel mapping but the
ptdump code was not updated and it appears to break the dump of the kernel
page table, so fix this by moving the KASAN shadow region in ptdump.

Fixes: f7ae02333d ("riscv: Move KASAN mapping next to the kernel mapping")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
Link: https://lore.kernel.org/r/20230203075232.274282-6-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Alexandre Ghiti 2023-02-03 08:52:31 +01:00 committed by Palmer Dabbelt
parent 617955ca6e
commit ecd7ebaf0b
No known key found for this signature in database
GPG Key ID: 2E1319F35FBB1889
1 changed files with 12 additions and 12 deletions
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24
arch/riscv/mm/ptdump.c
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@ -59,10 +59,6 @@ struct ptd_mm_info {
};
enum address_markers_idx {
#ifdef CONFIG_KASAN
KASAN_SHADOW_START_NR,
KASAN_SHADOW_END_NR,
#endif
FIXMAP_START_NR,
FIXMAP_END_NR,
PCI_IO_START_NR,
@ -74,6 +70,10 @@ enum address_markers_idx {
VMALLOC_START_NR,
VMALLOC_END_NR,
PAGE_OFFSET_NR,
#ifdef CONFIG_KASAN
KASAN_SHADOW_START_NR,
KASAN_SHADOW_END_NR,
#endif
#ifdef CONFIG_64BIT
MODULES_MAPPING_NR,
KERNEL_MAPPING_NR,
@ -82,10 +82,6 @@ enum address_markers_idx {
};
static struct addr_marker address_markers[] = {
#ifdef CONFIG_KASAN
{0, "Kasan shadow start"},
{0, "Kasan shadow end"},
#endif
{0, "Fixmap start"},
{0, "Fixmap end"},
{0, "PCI I/O start"},
@ -97,6 +93,10 @@ static struct addr_marker address_markers[] = {
{0, "vmalloc() area"},
{0, "vmalloc() end"},
{0, "Linear mapping"},
#ifdef CONFIG_KASAN
{0, "Kasan shadow start"},
{0, "Kasan shadow end"},
#endif
#ifdef CONFIG_64BIT
{0, "Modules/BPF mapping"},
{0, "Kernel mapping"},
@ -362,10 +362,6 @@ static int __init ptdump_init(void)
{
unsigned int i, j;
#ifdef CONFIG_KASAN
address_markers[KASAN_SHADOW_START_NR].start_address = KASAN_SHADOW_START;
address_markers[KASAN_SHADOW_END_NR].start_address = KASAN_SHADOW_END;
#endif
address_markers[FIXMAP_START_NR].start_address = FIXADDR_START;
address_markers[FIXMAP_END_NR].start_address = FIXADDR_TOP;
address_markers[PCI_IO_START_NR].start_address = PCI_IO_START;
@ -377,6 +373,10 @@ static int __init ptdump_init(void)
address_markers[VMALLOC_START_NR].start_address = VMALLOC_START;
address_markers[VMALLOC_END_NR].start_address = VMALLOC_END;
address_markers[PAGE_OFFSET_NR].start_address = PAGE_OFFSET;
#ifdef CONFIG_KASAN
address_markers[KASAN_SHADOW_START_NR].start_address = KASAN_SHADOW_START;
address_markers[KASAN_SHADOW_END_NR].start_address = KASAN_SHADOW_END;
#endif
#ifdef CONFIG_64BIT
address_markers[MODULES_MAPPING_NR].start_address = MODULES_VADDR;
address_markers[KERNEL_MAPPING_NR].start_address = kernel_map.virt_addr;