Daniel Rosenberg 3bda08b636 bpf: Allow NULL buffers in bpf_dynptr_slice(_rw) ... bpf_dynptr_slice(_rw) uses a user provided buffer if it can not provide a pointer to a block of contiguous memory. This buffer is unused in the case of local dynptrs, and may be unused in other cases as well. There is no need to require the buffer, as the kfunc can just return NULL if it was needed and not provided. This adds another kfunc annotation, __opt, which combines with __sz and __szk to allow the buffer associated with the size to be NULL. If the buffer is NULL, the verifier does not check that the buffer is of sufficient size. Signed-off-by: Daniel Rosenberg <drosen@google.com> Link: https://lore.kernel.org/r/20230506013134.2492210-2-drosen@google.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2023-05-06 16:42:57 -07:00
..
preload	bpf: iterators: Split iterators.lskel.h into little- and big- endian versions	2023-01-28 12:45:15 -08:00
arraymap.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
bloom_filter.c	bpf: compute hashes in bloom filter similar to hashmap	2023-04-02 08:44:49 -07:00
bpf_cgrp_storage.c	bpf: Teach verifier that certain helpers accept NULL pointer.	2023-04-04 16:57:16 -07:00
bpf_inode_storage.c	Networking changes for 6.4.	2023-04-26 16:07:23 -07:00
bpf_iter.c	bpf: implement numbers iterator	2023-03-08 16:19:51 -08:00
bpf_local_storage.c	bpf: Handle NULL in bpf_local_storage_free.	2023-04-12 10:27:50 -07:00
bpf_lru_list.c
bpf_lru_list.h	printk: stop including cache.h from printk.h	2022-05-13 07:20:07 -07:00
bpf_lsm.c	bpf: Fix the kernel crash caused by bpf_setsockopt().	2023-01-26 23:26:40 -08:00
bpf_struct_ops_types.h	bpf: Add dummy BPF STRUCT_OPS for test purpose	2021-11-01 14:10:00 -07:00
bpf_struct_ops.c	bpf: Check IS_ERR for the bpf_map_get() return value	2023-03-24 12:40:47 -07:00
bpf_task_storage.c	bpf: Teach verifier that certain helpers accept NULL pointer.	2023-04-04 16:57:16 -07:00
btf.c	bpf: minimal support for programs hooked into netfilter framework	2023-04-21 11:34:14 -07:00
cgroup_iter.c	bpf: Pin the start cgroup in cgroup_iter_seq_init()	2022-11-21 17:40:42 +01:00
cgroup.c	bpf: Don't EFAULT for getsockopt with optval=NULL	2023-04-21 17:09:53 +02:00
core.c	bpf: Support 64-bit pointers to kfuncs	2023-04-13 21:36:41 -07:00
cpumap.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
cpumask.c	bpf: Treat KF_RELEASE kfuncs as KF_TRUSTED_ARGS	2023-03-25 16:56:22 -07:00
devmap.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
disasm.c	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
disasm.h	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
dispatcher.c	bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func	2022-12-14 12:02:14 -08:00
hashtab.c	bpf: optimize hashmap lookups when key_size is divisible by 4	2023-04-01 15:08:19 -07:00
helpers.c	bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)	2023-05-06 16:42:57 -07:00
inode.c	fs: port inode_init_owner() to mnt_idmap	2023-01-19 09:24:28 +01:00
Kconfig	rcu: Make the TASKS_RCU Kconfig option be selected	2022-04-20 16:52:58 -07:00
link_iter.c	bpf: Add bpf_link iterator	2022-05-10 11:20:45 -07:00
local_storage.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
log.c	bpf: Relax log_buf NULL conditions when log_level>0 is requested	2023-04-11 18:05:44 +02:00
lpm_trie.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
Makefile	bpf: Split off basic BPF verifier log into separate file	2023-04-11 18:05:42 +02:00
map_in_map.c	bpf: Remove btf_field_offs, use btf_record's fields instead	2023-04-15 17:36:49 -07:00
map_in_map.h
map_iter.c	bpf: Introduce MEM_RDONLY flag	2021-12-18 13:27:41 -08:00
memalloc.c	bpf: Add a few bpf mem allocator functions	2023-03-25 19:52:51 -07:00
mmap_unlock_work.h	bpf: Introduce helper bpf_find_vma	2021-11-07 11:54:51 -08:00
net_namespace.c	net: Add includes masked by netdevice.h including uapi/bpf.h	2021-12-29 20:03:05 -08:00
offload.c	bpf: offload map memory usage	2023-03-07 09:33:43 -08:00
percpu_freelist.c	bpf: Initialize same number of free nodes for each pcpu_freelist	2022-11-11 12:05:14 -08:00
percpu_freelist.h
prog_iter.c
queue_stack_maps.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
reuseport_array.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
ringbuf.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
stackmap.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
syscall.c	bpf: Print a warning only if writing to unprivileged_bpf_disabled.	2023-05-02 16:20:31 -07:00
sysfs_btf.c
task_iter.c	bpf: keep a reference to the mm, in case the task is dead.	2022-12-28 14:11:48 -08:00
tnum.c	bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul	2021-06-01 13:34:15 +02:00
trampoline.c	Networking changes for 6.4.	2023-04-26 16:07:23 -07:00
verifier.c	bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)	2023-05-06 16:42:57 -07:00