diff options
| author | Andrey Konovalov <[email protected]> | 2022-03-24 18:12:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2022-03-24 19:06:48 -0700 |
| commit | c056a364e9546bd513d1f5205f0ee316d8acb910 (patch) | |
| tree | c71cacc1658d448709fb86781ec47be5b878d5ca | |
| parent | 2dfd1bd992322f7ab8db82d7862cb758c3be63fa (diff) | |
kasan: print virtual mapping info in reports
Print virtual mapping range and its creator in reports affecting virtual
mappings.
Also get physical page pointer for such mappings, so page information gets
printed as well.
Link: https://lkml.kernel.org/r/6ebb11210ae21253198e264d4bb0752c1fad67d7.1645548178.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Marco Elver <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitriy Vyukov <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/kasan/report.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 137c2c0b09db..f64352008bb8 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -260,8 +260,21 @@ static void print_address_description(void *addr, u8 tag) pr_err(" %pS\n", addr); } + if (is_vmalloc_addr(addr)) { + struct vm_struct *va = find_vm_area(addr); + + if (va) { + pr_err("The buggy address belongs to the virtual mapping at\n" + " [%px, %px) created by:\n" + " %pS\n", + va->addr, va->addr + va->size, va->caller); + + page = vmalloc_to_page(page); + } + } + if (page) { - pr_err("The buggy address belongs to the page:\n"); + pr_err("The buggy address belongs to the physical page:\n"); dump_page(page, "kasan: bad access detected"); } |