| Message ID | 42c635bb54d3af91db0f9b85d724c7c290069f67.1710574353.git.christophe.leroy@csgroup.eu (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [bpf-next,v4,1/2] bpf: Remove arch_unprotect_bpf_trampoline() | expand |
Hello: This series was applied to bpf/bpf-next.git (master) by Martin KaFai Lau <martin.lau@kernel.org>: On Sat, 16 Mar 2024 08:35:40 +0100 you wrote: > Last user of arch_unprotect_bpf_trampoline() was removed by > commit 187e2af05abe ("bpf: struct_ops supports more than one page for > trampolines.") > > Remove arch_unprotect_bpf_trampoline() > > Reported-by: Daniel Borkmann <daniel@iogearbox.net> > Fixes: 187e2af05abe ("bpf: struct_ops supports more than one page for trampolines.") > Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> > > [...] Here is the summary with links: - [bpf-next,v4,1/2] bpf: Remove arch_unprotect_bpf_trampoline() https://git.kernel.org/bpf/bpf-next/c/e3362acd7967 - [bpf-next,v4,2/2] bpf: Check return from set_memory_rox() https://git.kernel.org/bpf/bpf-next/c/c733239f8f53 You are awesome, thank you!
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index c5b461dda438..132c8ffba109 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -2180,10 +2180,6 @@ void arch_protect_bpf_trampoline(void *image, unsigned int size) { } -void arch_unprotect_bpf_trampoline(void *image, unsigned int size) -{ -} - int arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *ro_image, void *ro_image_end, const struct btf_func_model *m, u32 flags, struct bpf_tramp_links *tlinks, diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index a7ba8e178645..7a56d2d84512 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -3008,10 +3008,6 @@ void arch_protect_bpf_trampoline(void *image, unsigned int size) { } -void arch_unprotect_bpf_trampoline(void *image, unsigned int size) -{ -} - int arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *image, void *image_end, const struct btf_func_model *m, u32 flags, struct bpf_tramp_links *tlinks, diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 4f20f62f9d63..d89bdefb42e2 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1117,7 +1117,6 @@ int arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *image, void *i void *arch_alloc_bpf_trampoline(unsigned int size); void arch_free_bpf_trampoline(void *image, unsigned int size); void arch_protect_bpf_trampoline(void *image, unsigned int size); -void arch_unprotect_bpf_trampoline(void *image, unsigned int size); int arch_bpf_trampoline_size(const struct btf_func_model *m, u32 flags, struct bpf_tramp_links *tlinks, void *func_addr); diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c index db7599c59c78..04fd1abd3661 100644 --- a/kernel/bpf/trampoline.c +++ b/kernel/bpf/trampoline.c @@ -1078,13 +1078,6 @@ void __weak arch_protect_bpf_trampoline(void *image, unsigned int size) set_memory_rox((long)image, 1); } -void __weak arch_unprotect_bpf_trampoline(void *image, unsigned int size) -{ - WARN_ON_ONCE(size > PAGE_SIZE); - set_memory_nx((long)image, 1); - set_memory_rw((long)image, 1); -} - int __weak arch_bpf_trampoline_size(const struct btf_func_model *m, u32 flags, struct bpf_tramp_links *tlinks, void *func_addr) {
Last user of arch_unprotect_bpf_trampoline() was removed by commit 187e2af05abe ("bpf: struct_ops supports more than one page for trampolines.") Remove arch_unprotect_bpf_trampoline() Reported-by: Daniel Borkmann <daniel@iogearbox.net> Fixes: 187e2af05abe ("bpf: struct_ops supports more than one page for trampolines.") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- v4: No change v3: New --- arch/arm64/net/bpf_jit_comp.c | 4 ---- arch/x86/net/bpf_jit_comp.c | 4 ---- include/linux/bpf.h | 1 - kernel/bpf/trampoline.c | 7 ------- 4 files changed, 16 deletions(-)