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Merge "usb: f_fs: Fix use-after-free for epfile"

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qctecmdr 2021-05-06 22:23:00 -07:00 • committed by Gerrit - the friendly Code Review server
commit 39d09dfcce
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/gadget/function/f_fs.c
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@ -1424,10 +1424,13 @@ ffs_epfile_release(struct inode *inode, struct file *file)
{
struct ffs_epfile *epfile = inode->i_private;
struct ffs_data *ffs = epfile->ffs;
unsigned long flags;
ENTER();
spin_lock_irqsave(&epfile->ffs->eps_lock, flags);
__ffs_epfile_read_buffer_free(epfile);
spin_unlock_irqrestore(&epfile->ffs->eps_lock, flags);
ffs_log("%s: state %d setup_state %d flag %lu opened %u",
epfile->name, epfile->ffs->state, epfile->ffs->setup_state,
epfile->ffs->flags, atomic_read(&epfile->opened));