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

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Stéphane Lesimple 2018-04-17 18:50:32 +02:00
parent 602b68d493
commit 83ea78f523
1 changed files with 3 additions and 1 deletions
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spectre-meltdown-checker.sh
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@ -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"