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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/kernel/bpf/disasm.c
....@@ -1,14 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
23  * Copyright (c) 2016 Facebook
3
- *
4
- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of version 2 of the GNU General Public
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- * License as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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- * General Public License for more details.
124  */
135 
146 #include <linux/bpf.h>
....@@ -67,7 +59,7 @@
6759 	[BPF_STX]   = "stx",
6860 	[BPF_ALU]   = "alu",
6961 	[BPF_JMP]   = "jmp",
70
-	[BPF_RET]   = "BUG",
62
+	[BPF_JMP32] = "jmp32",
7163 	[BPF_ALU64] = "alu64",
7264 };
7365 
....@@ -136,23 +128,22 @@
136128 			else
137129 				print_bpf_end_insn(verbose, cbs->private_data, insn);
138130 		} else if (BPF_OP(insn->code) == BPF_NEG) {
139
-			verbose(cbs->private_data, "(%02x) r%d = %s-r%d\n",
140
-				insn->code, insn->dst_reg,
141
-				class == BPF_ALU ? "(u32) " : "",
131
+			verbose(cbs->private_data, "(%02x) %c%d = -%c%d\n",
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+				insn->code, class == BPF_ALU ? 'w' : 'r',
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+				insn->dst_reg, class == BPF_ALU ? 'w' : 'r',
142134 				insn->dst_reg);
143135 		} else if (BPF_SRC(insn->code) == BPF_X) {
144
-			verbose(cbs->private_data, "(%02x) %sr%d %s %sr%d\n",
145
-				insn->code, class == BPF_ALU ? "(u32) " : "",
136
+			verbose(cbs->private_data, "(%02x) %c%d %s %c%d\n",
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+				insn->code, class == BPF_ALU ? 'w' : 'r',
146138 				insn->dst_reg,
147139 				bpf_alu_string[BPF_OP(insn->code) >> 4],
148
-				class == BPF_ALU ? "(u32) " : "",
140
+				class == BPF_ALU ? 'w' : 'r',
149141 				insn->src_reg);
150142 		} else {
151
-			verbose(cbs->private_data, "(%02x) %sr%d %s %s%d\n",
152
-				insn->code, class == BPF_ALU ? "(u32) " : "",
143
+			verbose(cbs->private_data, "(%02x) %c%d %s %d\n",
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+				insn->code, class == BPF_ALU ? 'w' : 'r',
153145 				insn->dst_reg,
154146 				bpf_alu_string[BPF_OP(insn->code) >> 4],
155
-				class == BPF_ALU ? "(u32) " : "",
156147 				insn->imm);
157148 		}
158149 	} else if (class == BPF_STX) {
....@@ -208,10 +199,11 @@
208199 			 * part of the ldimm64 insn is accessible.
209200 			 */
210201 			u64 imm = ((u64)(insn + 1)->imm << 32) | (u32)insn->imm;
211
-			bool map_ptr = insn->src_reg == BPF_PSEUDO_MAP_FD;
202
+			bool is_ptr = insn->src_reg == BPF_PSEUDO_MAP_FD ||
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+				      insn->src_reg == BPF_PSEUDO_MAP_VALUE;
212204 			char tmp[64];
213205 
214
-			if (map_ptr && !allow_ptr_leaks)
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+			if (is_ptr && !allow_ptr_leaks)
215207 				imm = 0;
216208 
217209 			verbose(cbs->private_data, "(%02x) r%d = %s\n",
....@@ -222,7 +214,7 @@
222214 			verbose(cbs->private_data, "BUG_ld_%02x\n", insn->code);
223215 			return;
224216 		}
225
-	} else if (class == BPF_JMP) {
217
+	} else if (class == BPF_JMP32 || class == BPF_JMP) {
226218 		u8 opcode = BPF_OP(insn->code);
227219 
228220 		if (opcode == BPF_CALL) {
....@@ -246,13 +238,18 @@
246238 		} else if (insn->code == (BPF_JMP | BPF_EXIT)) {
247239 			verbose(cbs->private_data, "(%02x) exit\n", insn->code);
248240 		} else if (BPF_SRC(insn->code) == BPF_X) {
249
-			verbose(cbs->private_data, "(%02x) if r%d %s r%d goto pc%+d\n",
250
-				insn->code, insn->dst_reg,
241
+			verbose(cbs->private_data,
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+				"(%02x) if %c%d %s %c%d goto pc%+d\n",
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+				insn->code, class == BPF_JMP32 ? 'w' : 'r',
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+				insn->dst_reg,
251245 				bpf_jmp_string[BPF_OP(insn->code) >> 4],
246
+				class == BPF_JMP32 ? 'w' : 'r',
252247 				insn->src_reg, insn->off);
253248 		} else {
254
-			verbose(cbs->private_data, "(%02x) if r%d %s 0x%x goto pc%+d\n",
255
-				insn->code, insn->dst_reg,
249
+			verbose(cbs->private_data,
250
+				"(%02x) if %c%d %s 0x%x goto pc%+d\n",
251
+				insn->code, class == BPF_JMP32 ? 'w' : 'r',
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+				insn->dst_reg,
256253 				bpf_jmp_string[BPF_OP(insn->code) >> 4],
257254 				insn->imm, insn->off);
258255 		}