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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:47:48 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:47:48 +0000 |
| commit | a1865fbd182b17f2d2f465f557af5b45501c5f1c (patch) | |
| tree | 59da519ef2e59c763bb8efdbe67bc348cf833767 /drivers/vfio/pci/pds/lm.c | |
| parent | Adding upstream version 6.7.9. (diff) | |
| download | linux-a1865fbd182b17f2d2f465f557af5b45501c5f1c.tar.xz linux-a1865fbd182b17f2d2f465f557af5b45501c5f1c.zip | |
Adding upstream version 6.7.12.upstream/6.7.12
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/vfio/pci/pds/lm.c')
| -rw-r--r-- | drivers/vfio/pci/pds/lm.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/vfio/pci/pds/lm.c b/drivers/vfio/pci/pds/lm.c index 79fe2e66bb..6b94cc0bf4 100644 --- a/drivers/vfio/pci/pds/lm.c +++ b/drivers/vfio/pci/pds/lm.c @@ -92,8 +92,10 @@ static void pds_vfio_put_lm_file(struct pds_vfio_lm_file *lm_file) { mutex_lock(&lm_file->lock); + lm_file->disabled = true; lm_file->size = 0; lm_file->alloc_size = 0; + lm_file->filep->f_pos = 0; /* Free scatter list of file pages */ sg_free_table(&lm_file->sg_table); @@ -183,6 +185,12 @@ static ssize_t pds_vfio_save_read(struct file *filp, char __user *buf, pos = &filp->f_pos; mutex_lock(&lm_file->lock); + + if (lm_file->disabled) { + done = -ENODEV; + goto out_unlock; + } + if (*pos > lm_file->size) { done = -EINVAL; goto out_unlock; @@ -283,6 +291,11 @@ static ssize_t pds_vfio_restore_write(struct file *filp, const char __user *buf, mutex_lock(&lm_file->lock); + if (lm_file->disabled) { + done = -ENODEV; + goto out_unlock; + } + while (len) { size_t page_offset; struct page *page; |