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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-06-29 08:09:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-06-29 08:09:13 -0700 |
| commit | 753a0f61b9091536425d656c145881b70eb402f7 (patch) | |
| tree | 2320f3a84e29aa90311dd4f5a6db18ecf78cd950 | |
| parent | Merge tag 'i2c-for-6.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff) | |
| parent | futex: Initialize futex_phash_new during fork(). (diff) | |
| download | linux-753a0f61b9091536425d656c145881b70eb402f7.tar.gz linux-753a0f61b9091536425d656c145881b70eb402f7.zip | |
Merge tag 'locking_urgent_for_v6.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Borislav Petkov:
- Make sure the new futex phash is not copied during fork in order to
avoid a double-free
* tag 'locking_urgent_for_v6.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Initialize futex_phash_new during fork().
| -rw-r--r-- | include/linux/futex.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/futex.h b/include/linux/futex.h index 005b040c4791..b37193653e6b 100644 --- a/include/linux/futex.h +++ b/include/linux/futex.h @@ -89,6 +89,7 @@ void futex_hash_free(struct mm_struct *mm); static inline void futex_mm_init(struct mm_struct *mm) { RCU_INIT_POINTER(mm->futex_phash, NULL); + mm->futex_phash_new = NULL; mutex_init(&mm->futex_hash_lock); } |