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| author | Ken Brown <kbrown@cornell.edu> | 2024-12-18 11:43:09 -0500 |
|---|---|---|
| committer | Ken Brown <kbrown@cornell.edu> | 2024-12-19 10:40:18 -0500 |
| commit | 67bef16f7edf8642366ff55399bf9cf007c66d52 (patch) | |
| tree | 8e7786e241a88f834002f93706f76736651223ab | |
| parent | 677e3150907a83f17e50d546f79b7ca863ebd77d (diff) | |
| download | newlib-67bef16f7edf8642366ff55399bf9cf007c66d52.zip newlib-67bef16f7edf8642366ff55399bf9cf007c66d52.tar.gz newlib-67bef16f7edf8642366ff55399bf9cf007c66d52.tar.bz2 | |
Cygwin: mmap_list::try_map: fix a condition in a test of an mmap request
In testing whether the requested area is contained in an existing
mapped region, an incorrect condition was used due to a
misinterpretation of the u_addr and u_len variables.
Addresses: https://cygwin.com/pipermail/cygwin/2024-December/256913.html
Fixes: c68de3a262fe5 ("* mmap.cc (class mmap_record):
Declare new map_pages method with address parameter.")
Signed-off-by: Ken Brown <kbrown@cornell.edu>
| -rw-r--r-- | winsup/cygwin/mm/mmap.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/winsup/cygwin/mm/mmap.cc b/winsup/cygwin/mm/mmap.cc index 4fec64b..13418d7 100644 --- a/winsup/cygwin/mm/mmap.cc +++ b/winsup/cygwin/mm/mmap.cc @@ -651,7 +651,7 @@ mmap_list::try_map (void *addr, size_t len, int new_prot, int flags, off_t off) break; if (rec) { - if (u_addr > (caddr_t) addr || u_addr + len < (caddr_t) addr + len + if (u_addr > (caddr_t) addr || u_addr + u_len < (caddr_t) addr + len || !rec->compatible_flags (flags)) { /* Partial match only, or access mode doesn't match. */ |