Displaying 5 results from an estimated 5 matches for "list_for_each_entry_safe_reverse".
2017 Dec 12
1
[PATCHv2] virtio_mmio: fix devm cleanup
...ogether with the memory,
since alloc_dr() does:
size_t tot_size = sizeof(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...
2017 Dec 12
1
[PATCHv2] virtio_mmio: fix devm cleanup
...ogether with the memory,
since alloc_dr() does:
size_t tot_size = sizeof(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...
2020 Jul 16
0
[PATCH vhost next 09/10] vdpa/mlx5: Add shared memory registration code
...426 {
427 struct mlx5_vdpa_mr *mr = &mvdev->mr;
428 struct mlx5_vdpa_direct_mr *dmr;
429 struct mlx5_vdpa_direct_mr *n;
430
431 mutex_lock(&mr->mkey_mtx);
432 if (!mr->initialized)
433 goto out;
434
435 destroy_indirect_key(mvdev, mr);
436 list_for_each_entry_safe_reverse(dmr, n, &mr->head, list) {
437 list_del_init(&dmr->list);
438 unmap_direct_mr(mvdev, dmr);
439 kfree(dmr);
440 }
441 memset(mr, 0, sizeof(*mr));
442 mr->initialized = false;
443 out:
444 mutex_unlock(&mr->mkey_mtx);
445 }
446
---
0-D...
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: