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authorSherry Yang <sherryy@android.com>2017-08-31 10:26:06 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-09-01 08:53:32 +0200
commit957ccc2bc8f9ebfe8b19112cdc6c2bb20fd7bcf8 (patch)
tree29ee546d99a4b6b1f722c0ad89c6c18d80cf95b5 /drivers/android
parenta97db8818c7e8bb4f2d786ca73b2b761eacf482c (diff)
android: binder: fixup crash introduced by moving buffer hdr
Fix crash introduced by 74310e06be4d74dcf67cd108366710dee5c576d5 (android: binder: Move buffer out of area shared with user space) when close is called after open without mmap in between. Reported-by: kernel test robot <fengguang.wu@intel.com> Fixes: 74310e06be4d ("android: binder: Move buffer out of area shared with user space") Signed-off-by: Sherry Yang <sherryy@android.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android')
-rw-r--r--drivers/android/binder_alloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index 78c42c0d62b9..2624a502fcde 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -713,7 +713,6 @@ int binder_alloc_mmap_handler(struct binder_alloc *alloc,
}
buffer->data = alloc->buffer;
- INIT_LIST_HEAD(&alloc->buffers);
list_add(&buffer->entry, &alloc->buffers);
buffer->free = 1;
binder_insert_free_buffer(alloc, buffer);
@@ -972,6 +971,7 @@ void binder_alloc_init(struct binder_alloc *alloc)
alloc->tsk = current->group_leader;
alloc->pid = current->group_leader->pid;
mutex_init(&alloc->mutex);
+ INIT_LIST_HEAD(&alloc->buffers);
}
void binder_alloc_shrinker_init(void)

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