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| author | Daniel Borkmann <daniel@iogearbox.net> | 2021-05-12 20:57:14 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-05-12 21:58:22 +0200 |
| commit | c87db2405fe8e53e145e2d1e142d3b509644006b (patch) | |
| tree | 581ea953d1ca785e0c49715a354d6ecd77fae235 | |
| parent | 440c3247cba3d9433ac435d371dd7927d68772a7 (diff) | |
| download | bpf-c87db2405fe8e53e145e2d1e142d3b509644006b.tar.gz | |
bpf: Fix BPF_JIT kconfig symbol dependency
Notice: this object is not reachable from any branch.
Randy reported a randconfig build error recently on i386:
ld: arch/x86/net/bpf_jit_comp32.o: in function `do_jit':
bpf_jit_comp32.c:(.text+0x28c9): undefined reference to `__bpf_call_base'
ld: arch/x86/net/bpf_jit_comp32.o: in function `bpf_int_jit_compile':
bpf_jit_comp32.c:(.text+0x3694): undefined reference to `bpf_jit_blind_constants'
ld: bpf_jit_comp32.c:(.text+0x3719): undefined reference to `bpf_jit_binary_free'
ld: bpf_jit_comp32.c:(.text+0x3745): undefined reference to `bpf_jit_binary_alloc'
ld: bpf_jit_comp32.c:(.text+0x37d3): undefined reference to `bpf_jit_prog_release_other'
[...]
The cause was that b24abcff918a ("bpf, kconfig: Add consolidated menu entry for
bpf with core options") moved BPF_JIT from net/Kconfig into kernel/bpf/Kconfig
and previously BPF_JIT was guarded by a 'if NET'. However, there is no actual
dependency on NET, it's just that menuconfig NET selects BPF. And the latter in
turn causes kernel/bpf/core.o to be built which contains above symbols. Randy's
randconfig didn't have NET set, and BPF wasn't either, but BPF_JIT otoh was.
Detangle this by making BPF_JIT depend on BPF instead.
Fixes: b24abcff918a ("bpf, kconfig: Add consolidated menu entry for bpf with core options")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Notice: this object is not reachable from any branch.
| -rw-r--r-- | kernel/bpf/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/bpf/Kconfig b/kernel/bpf/Kconfig index 26b591e23f16a..bd04f4a44c01d 100644 --- a/kernel/bpf/Kconfig +++ b/kernel/bpf/Kconfig @@ -37,6 +37,7 @@ config BPF_SYSCALL config BPF_JIT bool "Enable BPF Just In Time compiler" + depends on BPF depends on HAVE_CBPF_JIT || HAVE_EBPF_JIT depends on MODULES help |