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file: fix possible null pointer access

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Matheus
2026-04-11 22:08:27 -03:00
parent 1e7318e423
commit 9a0fbaa0b0
1 changed files with 7 additions and 6 deletions
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kernel-src/fs/file.c
+7 -6
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@@ -35,6 +35,13 @@ static file_t* newfile() {
}
static void cleanfile(file_t *file) {
if (file->advlock) {
// try unlocking it if applicable
VOP_ADVLOCK(file->vnode, ADVLOCK_UNLOCK, file->advlock);
ADVLOCK_UNREF(file->advlock);
file->advlock = NULL;
}
if (file->vnode) {
vfs_close(file->vnode, fileflagstovnodeflags(file->flags));
VOP_RELEASE(file->vnode);
@@ -45,12 +52,6 @@ static void cleanfile(file_t *file) {
file->flags = 0;
file->mode = 0;
MUTEX_INIT(&file->mutex);
if (file->advlock) {
// try unlocking it if applicable
VOP_ADVLOCK(file->vnode, ADVLOCK_UNLOCK, file->advlock);
ADVLOCK_UNREF(file->advlock);
file->advlock = NULL;
}
file->vnode = NULL;
slab_free(filecache, file);
}