Jerome Marchand 2eb7648558 bpf: Specify access type of bpf_sysctl_get_name args ... The second argument of bpf_sysctl_get_name() helper is a pointer to a buffer that is being written to. However that isn't specify in the prototype. Until commit 37cce22dbd ("bpf: verifier: Refactor helper access type tracking"), all helper accesses were considered as a possible write access by the verifier, so no big harm was done. However, since then, the verifier might make wrong asssumption about the content of that address which might lead it to make faulty optimizations (such as removing code that was wrongly labeled dead). This is what happens in test_sysctl selftest to the tests related to sysctl_get_name. Add MEM_WRITE flag the second argument of bpf_sysctl_get_name(). Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20250619140603.148942-2-jmarchan@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2025-06-23 21:50:44 -07:00
..
preload	bpf: Add namespace to BPF internal symbols	2025-04-25 09:21:23 -07:00
arena.c	bpf_try_alloc_pages	2025-03-30 13:45:28 -07:00
arraymap.c
bloom_filter.c
bpf_cgrp_storage.c
bpf_inode_storage.c
bpf_iter.c
bpf_local_storage.c
bpf_lru_list.c	bpf: Adjust free target to avoid global starvation of LRU map	2025-06-18 18:50:14 -07:00
bpf_lru_list.h	bpf: Adjust free target to avoid global starvation of LRU map	2025-06-18 18:50:14 -07:00
bpf_lsm.c
bpf_struct_ops.c	bpf: Pass the same orig_call value to trampoline functions	2025-05-14 17:48:57 -07:00
bpf_task_storage.c
btf_iter.c
btf_relocate.c
btf.c	bpf-next-6.16	2025-05-28 15:52:42 -07:00
cgroup_iter.c
cgroup.c	bpf: Specify access type of bpf_sysctl_get_name args	2025-06-23 21:50:44 -07:00
core.c	bpf: Avoid __bpf_prog_ret0_warn when jit fails	2025-05-27 10:43:10 -07:00
cpumap.c
cpumask.c
crypto.c
devmap.c
disasm.c
disasm.h
dispatcher.c
dmabuf_iter.c	bpf: Add open coded dmabuf iterator	2025-05-27 09:51:25 -07:00
hashtab.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after rc4	2025-04-28 08:40:45 -07:00
helpers.c	bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem()	2025-05-27 10:45:59 -07:00
inode.c	VFS: rename lookup_one_len family to lookup_noperm and remove permission check	2025-04-08 11:24:36 +02:00
Kconfig
kmem_cache_iter.c
link_iter.c
local_storage.c
log.c
lpm_trie.c	bpf: Convert lpm_trie.c to rqspinlock	2025-03-19 08:03:05 -07:00
Makefile	bpf: Add dmabuf iterator	2025-05-27 09:51:25 -07:00
map_in_map.c
map_in_map.h
map_iter.c
memalloc.c
mmap_unlock_work.h
mprog.c
net_namespace.c
offload.c
percpu_freelist.c
percpu_freelist.h
prog_iter.c
queue_stack_maps.c	bpf: Convert queue_stack map to rqspinlock	2025-04-10 12:51:10 -07:00
range_tree.c
range_tree.h
relo_core.c
reuseport_array.c
ringbuf.c	bpf: Convert ringbuf map to rqspinlock	2025-04-11 10:28:26 -07:00
rqspinlock.c	bpf: Use architecture provided res_smp_cond_load_acquire	2025-04-10 12:47:07 -07:00
rqspinlock.h
stackmap.c
syscall.c	- The 11 patch series "Add folio_mk_pte()" from Matthew Wilcox	2025-05-31 15:44:16 -07:00
sysfs_btf.c	btf: Allow mmap of vmlinux btf	2025-05-23 10:06:28 -07:00
task_iter.c
tcx.c
tnum.c
token.c
trampoline.c
verifier.c	bpf: Mark dentry->d_inode as trusted_or_null	2025-06-17 08:40:59 -07:00