The patch titled Subject: scripts/decodecode: fix trapping instruction formatting has been added to the -mm tree. Its filename is scripts-decodecode-fix-trapping-instruction-formatting.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/scripts-decodecode-fix-trapping-instruction-formatting.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/scripts-decodecode-fix-trapping-instruction-formatting.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Ivan Delalande <colona@xxxxxxxxxx> Subject: scripts/decodecode: fix trapping instruction formatting If the trapping instruction contains a ':', for a memory access through segment registers for example, the sed substitution will insert the '*' marker in the middle of the instruction instead of the line address: 2b: 65 48 0f c7 0f cmpxchg16b %gs:*(%rdi) <-- trapping instruction I started to think I had forgotten some quirk of the assembly syntax before noticing that it was actually coming from the script. Fix it to add the address marker at the right place for these instructions: 28: 49 8b 06 mov (%r14),%rax 2b:* 65 48 0f c7 0f cmpxchg16b %gs:(%rdi) <-- trapping instruction 30: 0f 94 c0 sete %al Link: http://lkml.kernel.org/r/20200419223653.GA31248@visor Fixes: 18ff44b189e2 ("scripts/decodecode: make faulting insn ptr more robust") Signed-off-by: Ivan Delalande <colona@xxxxxxxxxx> Reviewed-by: Borislav Petkov <bp@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/decodecode | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/scripts/decodecode~scripts-decodecode-fix-trapping-instruction-formatting +++ a/scripts/decodecode @@ -126,7 +126,7 @@ faultlinenum=$(( $(wc -l $T.oo | cut -d faultline=`cat $T.dis | head -1 | cut -d":" -f2-` faultline=`echo "$faultline" | sed -e 's/\[/\\\[/g; s/\]/\\\]/g'` -cat $T.oo | sed -e "${faultlinenum}s/^\(.*:\)\(.*\)/\1\*\2\t\t<-- trapping instruction/" +cat $T.oo | sed -e "${faultlinenum}s/^\([^:]*:\)\(.*\)/\1\*\2\t\t<-- trapping instruction/" echo cat $T.aa cleanup _ Patches currently in -mm which might be from colona@xxxxxxxxxx are scripts-decodecode-fix-trapping-instruction-formatting.patch