| Message ID | 12141321-df3-a8bf-18e-e27d13f24b74@google.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | arch: allow pte_offset_map[_lock]() to fail | expand |
| Context | Check | Description |
|---|---|---|
| conchuod/cover_letter | success | Series has a cover letter |
| conchuod/tree_selection | success | Guessed tree name to be for-next at HEAD ac9a78681b92 |
| conchuod/fixes_present | success | Fixes tag not required for -next series |
| conchuod/maintainers_pattern | success | MAINTAINERS pattern errors before the patch: 6 and now 6 |
| conchuod/verify_signedoff | success | Signed-off-by tag matches author and committer |
| conchuod/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| conchuod/build_rv64_clang_allmodconfig | success | Errors and warnings before: 8 this patch: 8 |
| conchuod/module_param | success | Was 0 now: 0 |
| conchuod/build_rv64_gcc_allmodconfig | success | Errors and warnings before: 8 this patch: 8 |
| conchuod/build_rv32_defconfig | success | Build OK |
| conchuod/dtb_warn_rv64 | success | Errors and warnings before: 3 this patch: 3 |
| conchuod/header_inline | success | No static functions without inline keyword in header files |
| conchuod/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 17 lines checked |
| conchuod/build_rv64_nommu_k210_defconfig | success | Build OK |
| conchuod/verify_fixes | success | No Fixes tag |
| conchuod/build_rv64_nommu_virt_defconfig | success | Build OK |
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c index c3aebec71c0c..c78a0ff48066 100644 --- a/arch/microblaze/kernel/signal.c +++ b/arch/microblaze/kernel/signal.c @@ -194,7 +194,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, preempt_disable(); ptep = pte_offset_map(pmdp, address); - if (pte_present(*ptep)) { + if (ptep && pte_present(*ptep)) { address = (unsigned long) page_address(pte_page(*ptep)); /* MS: I need add offset in page */ address += ((unsigned long)frame->tramp) & ~PAGE_MASK; @@ -203,7 +203,8 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, invalidate_icache_range(address, address + 8); flush_dcache_range(address, address + 8); } - pte_unmap(ptep); + if (ptep) + pte_unmap(ptep); preempt_enable(); if (err) return -EFAULT;
In rare transient cases, not yet made possible, pte_offset_map() and pte_offset_map_lock() may not find a page table: handle appropriately. Signed-off-by: Hugh Dickins <hughd@google.com> --- arch/microblaze/kernel/signal.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)