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acrn-kernel/kernel/bpf
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Dmitrii Banshchikov f782e2c300 bpf: Relax return code check for subprograms 
Currently verifier enforces return code checks for subprograms in the
same manner as it does for program entry points. This prevents returning
arbitrary scalar values from subprograms. Scalar type of returned values
is checked by btf_prepare_func_args() and hence it should be safe to
allow only scalars for now. Relax return code checks for subprograms and
allow any correct scalar values.

Fixes: 51c39bb1d5 (bpf: Introduce function-by-function verification)
Signed-off-by: Dmitrii Banshchikov <me@ubique.spb.ru>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20201113171756.90594-1-me@ubique.spb.ru
 		2020-11-14 08:17:27 -08:00
..
preload bpf: BPF_PRELOAD depends on BPF_SYSCALL 2020-11-05 18:49:29 -08:00
Makefile bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE 2020-10-29 20:01:46 -07:00
arraymap.c bpf: Allow for map-in-map with dynamic inner array map entries 2020-10-11 10:21:04 -07:00
bpf_inode_storage.c bpf: Allow specifying a BTF ID per argument in function protos 2020-09-21 15:00:40 -07:00
bpf_iter.c bpf: Bump iter seq size to support BTF representation of large data structures 2020-09-28 18:26:58 -07:00
bpf_local_storage.c bpf: Use hlist_add_head_rcu when linking to local_storage 2020-09-19 01:12:35 +02:00
bpf_lru_list.c
…
bpf_lru_list.h
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bpf_lsm.c bpf: Update verification logic for LSM programs 2020-11-06 13:15:21 -08:00
bpf_struct_ops.c
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bpf_struct_ops_types.h
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btf.c bpf: Introduce bpf_per_cpu_ptr() 2020-10-02 15:00:49 -07:00
cgroup.c Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-22 09:59:21 -07:00
core.c bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE 2020-10-29 20:01:46 -07:00
cpumap.c bpf, cpumap: Remove rcpu pointer from cpu_map_build_skb signature 2020-09-28 23:30:42 +02:00
devmap.c
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disasm.c
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disasm.h
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dispatcher.c
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hashtab.c bpf: Zero-fill re-used per-cpu map element 2020-11-05 19:55:57 -08:00
helpers.c bpf: Introducte bpf_this_cpu_ptr() 2020-10-02 15:00:49 -07:00
inode.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
local_storage.c
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lpm_trie.c
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map_in_map.c
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map_in_map.h
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map_iter.c
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net_namespace.c
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offload.c
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percpu_freelist.c bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI 2020-10-06 00:04:11 +02:00
percpu_freelist.h bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI 2020-10-06 00:04:11 +02:00
prog_iter.c
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queue_stack_maps.c
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reuseport_array.c bpf, net: Rework cookie generator as per-cpu one 2020-09-30 11:50:35 -07:00
ringbuf.c
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stackmap.c bpf: Allow specifying a BTF ID per argument in function protos 2020-09-21 15:00:40 -07:00
syscall.c bpf: Remove unneeded break 2020-10-19 20:40:21 +02:00
sysfs_btf.c bpf: Fix sysfs export of empty BTF section 2020-09-21 21:50:24 +02:00
task_iter.c
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tnum.c
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trampoline.c bpf: Move prog->aux->linked_prog and trampoline into bpf_link on attach 2020-09-29 13:09:23 -07:00
verifier.c bpf: Relax return code check for subprograms 2020-11-14 08:17:27 -08:00