[PATCH RFC bpf-next 2/3] x86,bpf: use bpf_prog_report_probe_violation for x86
From: Menglong Dong <hidden>
Date: 2025-09-27 06:12:22
Also in:
bpf, lkml
Subsystem:
bpf jit for x86 64-bit, bpf [general] (safe dynamic programs and tools), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Use bpf_prog_report_probe_violation() to report the memory probe fault in ex_handler_bpf(). Signed-off-by: Menglong Dong <redacted> --- arch/x86/net/bpf_jit_comp.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index fc13306af15f..03d4d8385f4c 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c@@ -1470,6 +1470,8 @@ bool ex_handler_bpf(const struct exception_table_entry *x, struct pt_regs *regs) off = FIELD_GET(DATA_ARENA_OFFSET_MASK, x->data); addr = *(unsigned long *)((void *)regs + arena_reg) + off; bpf_prog_report_arena_violation(is_write, addr, regs->ip); + } else { + bpf_prog_report_probe_violation(is_write, regs->ip); } /* jump over faulting load and clear dest register */
--
2.51.0