linux-kernel - [PATCH RFC bpf-next 2/3] x86,bpf: use bpf_prog_report_probe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250927061210.194502-3-menglong.dong@linux.dev>
Date: Sat, 27 Sep 2025 14:12:09 +0800
From: Menglong Dong <menglong8.dong@...il.com>
To: ast@...nel.org
Cc: bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	jiang.biao@...ux.dev
Subject: [PATCH RFC bpf-next 2/3] x86,bpf: use bpf_prog_report_probe_violation for x86

Use bpf_prog_report_probe_violation() to report the memory probe fault
in ex_handler_bpf().

Signed-off-by: Menglong Dong <menglong.dong@...ux.dev>
---
 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