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[PATCH] s390: fix memory leak in vmcp

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If vmcp is interrupted by a signal the vmcp command buffer is not freed.
Found by Pete Zaitcev.

Signed-off-by: Christian Borntraeger <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christian Borntraeger 2005-11-07 00:59:12 -08:00 • committed by Linus Torvalds
commit a5da866fe0
1 changed files with 3 additions and 1 deletions
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4
drivers/s390/char/vmcp.c
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@ -103,8 +103,10 @@ vmcp_write(struct file *file, const char __user * buff, size_t count,
}
cmd[count] = '\0';
session = (struct vmcp_session *)file->private_data;
if (down_interruptible(&session->mutex))
if (down_interruptible(&session->mutex)) {
kfree(cmd);
return -ERESTARTSYS;
}
if (!session->response)
session->response = (char *)__get_free_pages(GFP_KERNEL
| __GFP_REPEAT | GFP_DMA,