On 3/7/16 3:08 AM, Daniel Borkmann wrote:
On 03/07/2016 02:58 AM, Alexei Starovoitov wrote:
[...]
---
include/linux/bpf.h | 1 +
include/uapi/linux/bpf.h | 3 +
kernel/bpf/hashtab.c | 264
++-
kernel/bpf/syscall.c | 2 +-
4 fil
On 03/07/2016 02:58 AM, Alexei Starovoitov wrote:
[...]
---
include/linux/bpf.h | 1 +
include/uapi/linux/bpf.h | 3 +
kernel/bpf/hashtab.c | 264 ++-
kernel/bpf/syscall.c | 2 +-
4 files changed, 196 insertions(+), 74 deletions
If kprobe is placed on spin_unlock then calling kmalloc/kfree from
bpf programs is not safe, since the following dead lock is possible:
kfree->spin_lock(kmem_cache_node->lock)...spin_unlock->kprobe->
bpf_prog->map_update->kmalloc->spin_lock(of the same kmem_cache_node->lock)
and deadlocks.
The fol
