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| author | Al Viro <viro@zeniv.linux.org.uk> | 2022-06-05 21:01:42 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2022-06-05 22:03:03 +0300 |
| commit | 40a1926022d128057376d35167128a7c74e3dca4 (patch) | |
| tree | b58c10d4ef49365fece9ccd5e49974ce8e03d747 /drivers/android | |
| parent | 6319194ec57b0452dcda4589d24c4e7db299c5bf (diff) | |
| download | linux-40a1926022d128057376d35167128a7c74e3dca4.tar.xz | |
fix the breakage in close_fd_get_file() calling conventions change
It used to grab an extra reference to struct file rather than
just transferring to caller the one it had removed from descriptor
table. New variant doesn't, and callers need to be adjusted.
Reported-and-tested-by: syzbot+47dd250f527cb7bebf24@syzkaller.appspotmail.com
Fixes: 6319194ec57b ("Unify the primitives for file descriptor closing")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/android')
| -rw-r--r-- | drivers/android/binder.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 27c9b004823a..73beea5dc18c 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -1857,6 +1857,8 @@ static void binder_deferred_fd_close(int fd) init_task_work(&twcb->twork, binder_do_fd_close); twcb->file = close_fd_get_file(fd); if (twcb->file) { + // pin it until binder_do_fd_close(); see comments there + get_file(twcb->file); filp_close(twcb->file, current->files); task_work_add(current, &twcb->twork, TWA_RESUME); } else { |