diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-10-31 14:57:28 -0700 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-11-09 09:52:25 +0000 |
| commit | acfc35cfcee5df419391671ef1a631f43feee4e3 (patch) | |
| tree | 55d3c5b46d35e28790f060b6b68775e6617d0c0f /arch | |
| parent | 8ec8490a1950efeccb00967698cf7cb2fcd25ca7 (diff) | |
| download | lwn-acfc35cfcee5df419391671ef1a631f43feee4e3.tar.gz lwn-acfc35cfcee5df419391671ef1a631f43feee4e3.zip | |
arm64/syscall: Include asm/ptrace.h in syscall_wrapper header.
Add the same change for ARM64 as done in the commit 9440c4294160
("x86/syscall: Include asm/ptrace.h in syscall_wrapper header") to
make sure all syscalls see 'struct pt_regs' definition and resulted
BTF for '__arm64_sys_*(struct pt_regs *regs)' functions point to
actual struct.
Without this patch, the BPF verifier refuses to load a tracing prog
which accesses pt_regs.
bpf(BPF_PROG_LOAD, {prog_type=0x1a, ...}, 128) = -1 EACCES
With this patch, we can see the correct error, which saves us time
in debugging the prog.
bpf(BPF_PROG_LOAD, {prog_type=0x1a, ...}, 128) = 4
bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name=NULL, prog_fd=4}}, 128) = -1 ENOTSUPP
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221031215728.50389-1-kuniyu@amazon.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/asm/syscall_wrapper.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/syscall_wrapper.h b/arch/arm64/include/asm/syscall_wrapper.h index b383b4802a7b..d30217c21eff 100644 --- a/arch/arm64/include/asm/syscall_wrapper.h +++ b/arch/arm64/include/asm/syscall_wrapper.h @@ -8,7 +8,7 @@ #ifndef __ASM_SYSCALL_WRAPPER_H #define __ASM_SYSCALL_WRAPPER_H -struct pt_regs; +#include <asm/ptrace.h> #define SC_ARM64_REGS_TO_ARGS(x, ...) \ __MAP(x,__SC_ARGS \ |