diff options
| author | Will Deacon <will.deacon@arm.com> | 2014-11-21 17:22:22 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2014-11-21 17:22:22 +0300 |
| commit | 7f73f7aef824b8bc27046edaf6b73bca4b0e7669 (patch) | |
| tree | d1d9fe5dce6d67a52432f80dfe65b25b90693021 /arch/arm64/mm | |
| parent | 1b907f46db07405b6676addb91b32c546d772fcd (diff) | |
| download | linux-7f73f7aef824b8bc27046edaf6b73bca4b0e7669.tar.xz | |
arm64: mm: report unhandled level-0 translation faults correctly
Translation faults that occur due to the input address being outside
of the address range mapped by the relevant base register are reported
as level 0 faults in ESR.DFSC.
If the faulting access cannot be resolved by the kernel (e.g. because
it is not mapped by a vma), then we report "input address range fault"
on the console. This was fine until we added support for 48-bit VAs,
which actually place PGDs at level 0 and can trigger faults for invalid
addresses that are within the range of the page tables.
This patch changes the string to report "level 0 translation fault",
which is far less confusing.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/fault.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 41cb6d3d6075..c11cd27ca8f5 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -380,7 +380,7 @@ static struct fault_info { { do_bad, SIGBUS, 0, "level 1 address size fault" }, { do_bad, SIGBUS, 0, "level 2 address size fault" }, { do_bad, SIGBUS, 0, "level 3 address size fault" }, - { do_translation_fault, SIGSEGV, SEGV_MAPERR, "input address range fault" }, + { do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 0 translation fault" }, { do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 1 translation fault" }, { do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 2 translation fault" }, { do_page_fault, SIGSEGV, SEGV_MAPERR, "level 3 translation fault" }, |