Hello.
After a very recent commit that added sysfs lib support, if devno is
set to zero in blkid_devno_to_wholedisk(), the cxt variable remains
initialized and so there is a call to sysfs_deinit() and then free()
with an invalid pointer as parameter:
int blkid_devno_to_wholedisk(dev_t dev, char *diskname,
size_t len, dev_t *diskdevno)
{
struct sysfs_cxt cxt;
int is_part = 0;
if (!dev)
---> goto err;
if (sysfs_init(&cxt, dev, NULL))
goto err;
[...]
err:
sysfs_deinit(&cxt);
Francesco
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