diff options
| author | Juergen Gross <jgross@suse.com> | 2017-04-12 16:36:34 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-04-13 00:26:30 +0200 |
| commit | 84bbabc3a452e8085cfbd745ff0bff2b89074417 (patch) | |
| tree | fff877123fc551c7fd7e8002bda3ea19ad741de8 /arch/x86/mm/dump_pagetables.c | |
| parent | 5f2173e056b2a5c215b862f136192744c447844e (diff) | |
x86/mm: Fix dump pagetables for 4 levels of page tables
Commit fdd3d8ce0ea62 ("x86/dump_pagetables: Add support for 5-level
paging") introduced an error for dumping with only 4 levels by setting
PGD_LEVEL_MULT to a wrong value.
This is leading to e.g. addresses printed as "(null)" for ranges:
x86/mm: Found insecure W+X mapping at address (null)/(null)
Make PGD_LEVEL_MULT a multiple of PTRS_PER_P4D instead of PTRS_PER_PUD
Fixes: fdd3d8ce0ea62 ("x86/dump_pagetables: Add support for 5-level paging")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Link: http://lkml.kernel.org/r/20170412143634.6846-1-jgross@suse.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/mm/dump_pagetables.c')
| -rw-r--r-- | arch/x86/mm/dump_pagetables.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c index 9f305be71a72..bce6990b1d81 100644 --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -111,7 +111,7 @@ static struct addr_marker address_markers[] = { #define PMD_LEVEL_MULT (PTRS_PER_PTE * PTE_LEVEL_MULT) #define PUD_LEVEL_MULT (PTRS_PER_PMD * PMD_LEVEL_MULT) #define P4D_LEVEL_MULT (PTRS_PER_PUD * PUD_LEVEL_MULT) -#define PGD_LEVEL_MULT (PTRS_PER_PUD * P4D_LEVEL_MULT) +#define PGD_LEVEL_MULT (PTRS_PER_P4D * P4D_LEVEL_MULT) #define pt_dump_seq_printf(m, to_dmesg, fmt, args...) \ ({ \ |