search for: devm_kmalloc_release

...size; > #endif > > }; > > struct devres { > struct devres_node node; > /* -- 3 pointers */ > unsigned long long data[]; /* guarantee ull alignment */ > }; > 2) devm_kzalloc -> devm_kmalloc > > dr = alloc_dr(devm_kmalloc_release, size, gfp, dev_to_node(dev)); > "devm_kmalloc_release" is noop, do nothing. Please note that the release function is there to perform cleanup prior to the devm infrastructure releasing the memory. The devm_kmalloc_release function is a no-op since nothing has to be done prior to mem...

...size; > #endif > > }; > > struct devres { > struct devres_node node; > /* -- 3 pointers */ > unsigned long long data[]; /* guarantee ull alignment */ > }; > 2) devm_kzalloc -> devm_kmalloc > > dr = alloc_dr(devm_kmalloc_release, size, gfp, dev_to_node(dev)); > "devm_kmalloc_release" is noop, do nothing. Please note that the release function is there to perform cleanup prior to the devm infrastructure releasing the memory. The devm_kmalloc_release function is a no-op since nothing has to be done prior to mem...

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:

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:

...data[]; /* guarantee ull alignment */ }; 1) devm_request_mem_region -> __devm_request_region dr = devres_alloc(devm_region_release, sizeof(struct region_devres), "devm_region_release" will call __release_region to release resource 2) devm_kzalloc -> devm_kmalloc dr = alloc_dr(devm_kmalloc_release, size, gfp, dev_to_node(dev)); "devm_kmalloc_release" is noop, do nothing. 3) devm_ioremap -> ... -> __devres_alloc_node ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); devm_ioremap_release do iounmap so for case 2) above, we need a devm_kfree() before call re...