Displaying 4 results from an estimated 4 matches for "devres_log".
2017 Dec 12
1
[PATCHv2] virtio_mmio: fix devm cleanup
...izeof(struct devres) + size;
struct devres *dr;
dr = kmalloc_node_track_caller(tot_size, gfp, nid);
return dr->data;
... where dr->data points at the memory after the struct devres.
Later, in release_nodes() we do:
list_for_each_entry_safe_reverse(dr, tmp, &todo, node.entry) {
devres_log(dev, &dr->node, "REL");
dr->node.release(dev, dr->data);
kfree(dr);
}
... which will invoke the no-op devm_kmalloc_release, then free the
devres allocation, including the dr->data memory the user requested.
> so for case 2) above, we need a devm_kfree() befor...
2017 Dec 12
1
[PATCHv2] virtio_mmio: fix devm cleanup
...izeof(struct devres) + size;
struct devres *dr;
dr = kmalloc_node_track_caller(tot_size, gfp, nid);
return dr->data;
... where dr->data points at the memory after the struct devres.
Later, in release_nodes() we do:
list_for_each_entry_safe_reverse(dr, tmp, &todo, node.entry) {
devres_log(dev, &dr->node, "REL");
dr->node.release(dev, dr->data);
kfree(dr);
}
... which will invoke the no-op devm_kmalloc_release, then free the
devres allocation, including the dr->data memory the user requested.
> so for case 2) above, we need a devm_kfree() befor...
2017 Dec 12
4
[PATCHv2] virtio_mmio: fix devm cleanup
Recent rework of the virtio_mmio probe/remove paths balanced a
devm_ioremap() with an iounmap() rather than its devm variant. This ends
up corrupting the devm datastructures, and results in the following
boot-time splat on arm64 under QEMU 2.9.0:
[ 3.450397] ------------[ cut here ]------------
[ 3.453822] Trying to vfree() nonexistent vm area (00000000c05b4844)
[ 3.460534] WARNING: CPU:
2017 Dec 12
4
[PATCHv2] virtio_mmio: fix devm cleanup
Recent rework of the virtio_mmio probe/remove paths balanced a
devm_ioremap() with an iounmap() rather than its devm variant. This ends
up corrupting the devm datastructures, and results in the following
boot-time splat on arm64 under QEMU 2.9.0:
[ 3.450397] ------------[ cut here ]------------
[ 3.453822] Trying to vfree() nonexistent vm area (00000000c05b4844)
[ 3.460534] WARNING: CPU: