Daniel Borkmann 5b029a32cf bpf: Fix ringbuf helper function compatibility ... Commit 457f44363a ("bpf: Implement BPF ring buffer and verifier support for it") extended check_map_func_compatibility() by enforcing map -> helper function match, but not helper -> map type match. Due to this all of the bpf_ringbuf_*() helper functions could be used with a wrong map type such as array or hash map, leading to invalid access due to type confusion. Also, both BPF_FUNC_ringbuf_{submit,discard} have ARG_PTR_TO_ALLOC_MEM as argument and not a BPF map. Therefore, their check_map_func_compatibility() presence is incorrect since it's only for map type checking. Fixes: 457f44363a ("bpf: Implement BPF ring buffer and verifier support for it") Reported-by: Ryota Shiga (Flatt Security) Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org>		2021-08-23 23:09:10 +02:00
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preload	…
Kconfig	…
Makefile	…
arraymap.c	…
bpf_inode_storage.c	…
bpf_iter.c	…
bpf_local_storage.c	…
bpf_lru_list.c	…
bpf_lru_list.h	…
bpf_lsm.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-06-17 11:54:56 -07:00
bpf_struct_ops.c	…
bpf_struct_ops_types.h	…
bpf_task_storage.c	…
btf.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-06-17 11:54:56 -07:00
cgroup.c	…
core.c	bpf, core: Fix kernel-doc notation	2021-08-10 13:09:28 +02:00
cpumap.c	xdp: Add proper __rcu annotations to redirect map entries	2021-06-24 19:41:15 +02:00
devmap.c	bpf, devmap: Convert remaining READ_ONCE() to rcu_dereference_check()	2021-07-01 09:28:38 +02:00
disasm.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-07-29 00:20:56 +02:00
disasm.h	…
dispatcher.c	…
hashtab.c	bpf: Fix integer overflow involving bucket_size	2021-08-07 01:39:22 +02:00
helpers.c	bpf: Add rcu_read_lock in bpf_get_current_[ancestor_]cgroup_id() helpers	2021-08-11 11:45:43 -07:00
inode.c	bpf: Fix regression on BPF_OBJ_GET with non-O_RDWR flags	2021-06-22 14:57:43 +02:00
local_storage.c	…
lpm_trie.c	bpf: Allow RCU-protected lookups to happen from bh context	2021-06-24 19:41:15 +02:00
map_in_map.c	…
map_in_map.h	…
map_iter.c	…
net_namespace.c	…
offload.c	…
percpu_freelist.c	…
percpu_freelist.h	…
prog_iter.c	…
queue_stack_maps.c	…
reuseport_array.c	…
ringbuf.c	bpf: Fix false positive kmemleak report in bpf_ringbuf_area_alloc()	2021-06-28 15:57:46 +02:00
stackmap.c	…
syscall.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-06-17 11:54:56 -07:00
sysfs_btf.c	…
task_iter.c	…
tnum.c	…
trampoline.c	…
verifier.c	bpf: Fix ringbuf helper function compatibility	2021-08-23 23:09:10 +02:00