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7bc0584e5d
Implement storing stack depot handles for alloc/free stack traces for slab objects for the tag-based KASAN modes in a ring buffer. This ring buffer is referred to as the stack ring. On each alloc/free of a slab object, the tagged address of the object and the current stack trace are recorded in the stack ring. On each bug report, if the accessed address belongs to a slab object, the stack ring is scanned for matching entries. The newest entries are used to print the alloc/free stack traces in the report: one entry for alloc and one for free. The number of entries in the stack ring is fixed in this patch, but one of the following patches adds a command-line argument to control it. [andreyknvl@google.com: initialize read-write lock in stack ring] Link: https://lkml.kernel.org/r/576182d194e27531e8090bad809e4136953895f4.1663700262.git.andreyknvl@google.com Link: https://lkml.kernel.org/r/692de14b6b6a1bc817fd55e4ad92fc1f83c1ab59.1662411799.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Peter Collingbourne <pcc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| .. | ||
| common.c | ||
| generic.c | ||
| hw_tags.c | ||
| init.c | ||
| kasan.h | ||
| Makefile | ||
| quarantine.c | ||
| report_generic.c | ||
| report_hw_tags.c | ||
| report_sw_tags.c | ||
| report_tags.c | ||
| report.c | ||
| shadow.c | ||
| sw_tags.c | ||
| tags.c | ||