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| author | Flavio Cruz <flaviocruz@gmail.com> | 2023-12-29 16:21:03 -0500 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-12-29 22:44:32 +0100 |
| commit | 36918d77a40273ae93c250a4c0699659f9f6c33b (patch) | |
| tree | 454e921296bc62d21360cda62155712acf0b0493 /utils | |
| parent | 61ad4bfeb4966d79b410fb876b7d28829e97174e (diff) | |
| download | hurd-36918d77a40273ae93c250a4c0699659f9f6c33b.tar.gz hurd-36918d77a40273ae93c250a4c0699659f9f6c33b.tar.bz2 hurd-36918d77a40273ae93c250a4c0699659f9f6c33b.zip | |
Fix overflow issues in tmpfs and vmallocate
Message-ID: <20231229212105.858759-9-flaviocruz@gmail.com>
Diffstat (limited to 'utils')
| -rw-r--r-- | utils/vmallocate.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/utils/vmallocate.c b/utils/vmallocate.c index b7eafed3..fde8e768 100644 --- a/utils/vmallocate.c +++ b/utils/vmallocate.c @@ -160,8 +160,11 @@ main (int argc, char **argv) struct child *c, *children = NULL; process_t proc = getproc (); - /* We must make sure that chunk_size fits into vm_size_t. */ - assert_backtrace (chunk_size <= 1U << (sizeof (vm_size_t) * 8 - 1)); + /* We must make sure that chunk_size fits into vm_size_t. + * We assume sizeof (vm_size_t) = sizeof (uintptr_t). */ + _Static_assert (sizeof (vm_size_t) == sizeof (uintptr_t), + "expected sizeof (vm_size_t) == sizeof (uintptr_t)."); + assert_backtrace (chunk_size <= UINTPTR_MAX); /* Parse our arguments. */ argp_parse (&argp, argc, argv, 0, 0, 0); |