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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-22 13:38:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-22 13:38:17 -0800 |
| commit | 1375b9803e007842493c64d0d73d7dd0e385e17c (patch) | |
| tree | bbdba09ad6c044f845a9dc553a88016417c8ad6b /kernel | |
| parent | c45647f9f562b52915b43b6bb447827cebf511bd (diff) | |
| parent | 625d867347c9e84d1ac3c953e1b689f65b603bed (diff) | |
| download | linux-1375b9803e007842493c64d0d73d7dd0e385e17c.tar.bz2 | |
Merge branch 'akpm' (patches from Andrew)
Merge KASAN updates from Andrew Morton.
This adds a new hardware tag-based mode to KASAN. The new mode is
similar to the existing software tag-based KASAN, but relies on arm64
Memory Tagging Extension (MTE) to perform memory and pointer tagging
(instead of shadow memory and compiler instrumentation).
By Andrey Konovalov and Vincenzo Frascino.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (60 commits)
kasan: update documentation
kasan, mm: allow cache merging with no metadata
kasan: sanitize objects when metadata doesn't fit
kasan: clarify comment in __kasan_kfree_large
kasan: simplify assign_tag and set_tag calls
kasan: don't round_up too much
kasan, mm: rename kasan_poison_kfree
kasan, mm: check kasan_enabled in annotations
kasan: add and integrate kasan boot parameters
kasan: inline (un)poison_range and check_invalid_free
kasan: open-code kasan_unpoison_slab
kasan: inline random_tag for HW_TAGS
kasan: inline kasan_reset_tag for tag-based modes
kasan: remove __kasan_unpoison_stack
kasan: allow VMAP_STACK for HW_TAGS mode
kasan, arm64: unpoison stack only with CONFIG_KASAN_STACK
kasan: introduce set_alloc_info
kasan: rename get_alloc/free_info
kasan: simplify quarantine_put call site
kselftest/arm64: check GCR_EL1 after context switch
...
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fork.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 41906a52a764..37720a6d04ea 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -225,8 +225,8 @@ static unsigned long *alloc_thread_stack_node(struct task_struct *tsk, int node) if (!s) continue; - /* Clear the KASAN shadow of the stack. */ - kasan_unpoison_shadow(s->addr, THREAD_SIZE); + /* Mark stack accessible for KASAN. */ + kasan_unpoison_range(s->addr, THREAD_SIZE); /* Clear stale pointers from reused stack. */ memset(s->addr, 0, THREAD_SIZE); |