fix: arm: also detect variant 1 mitigation when using native objdump

speed47 · speed47 · commit 83ea78f523d3 · 2018-04-17T18:50:32.000+02:00
diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh
@@ -1845,6 +1845,8 @@ check_variant1_linux()
 		#ffffff8008082e48:       8a3a0273        bic     x19, x19, x26
 		#ffffff8008082e4c:       8a93ff5a        and     x26, x26, x19, asr #63
 		#ffffff8008082e50:       d503229f        hint    #0x14
+		# /!\ can also just be "csdb" instead of "hint #0x14" for native objdump
+		#
 		# if we have v1_mask_nospec or redhat_canonical_spectre>0, don't bother disassembling the kernel, the answer is no.
 		if [ -n "$v1_mask_nospec" ] || [ "$redhat_canonical_spectre" -gt 0 ]; then
 			pstatus yellow NO
@@ -1855,7 +1857,7 @@ check_variant1_linux()
 		elif ! which "${opt_arch_prefix}objdump" >/dev/null 2>&1; then
 			pstatus yellow UNKNOWN "missing '${opt_arch_prefix}objdump' tool, please install it, usually it's in the binutils package"
 		else
-			"${opt_arch_prefix}objdump" -d "$kernel" | perl -ne 'push @r, $_; /\shint\s/ && $r[0]=~/\ssub\s+(x\d+)/ && $r[1]=~/\sbic\s+$1,\s+$1,/ && $r[2]=~/\sand\s/ && exit(9); shift @r if @r>3'; ret=$?
+			"${opt_arch_prefix}objdump" -d "$kernel" | perl -ne 'push @r, $_; /\s(hint|csdb)\s/ && $r[0]=~/\ssub\s+(x\d+)/ && $r[1]=~/\sbic\s+$1,\s+$1,/ && $r[2]=~/\sand\s/ && exit(9); shift @r if @r>3'; ret=$?
 			if [ "$ret" -eq 9 ]; then
 				pstatus green YES "mask_nospec64 macro is present and used"
 				v1_mask_nospec="arm mask_nospec64"
