6.12-stable review patch. If anyone has any objections, please let me know.
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From: David Laight david.laight.linux@gmail.com
[ Upstream commit e77956e4e5c11218e60a1fe8cdbccd02476f2e56 ]
In verbose mode, when printing the disassembly of affected functions, if CROSS_COMPILE isn't set, the objdump command string gets prefixed with "(null)".
Somehow this worked before. Maybe some versions of glibc return an empty string instead of NULL. Fix it regardless.
[ jpoimboe: Rewrite commit log. ]
Fixes: ca653464dd097 ("objtool: Add verbose option for disassembling affected functions") Signed-off-by: David Laight david.laight.linux@gmail.com Signed-off-by: Josh Poimboeuf jpoimboe@kernel.org Signed-off-by: Ingo Molnar mingo@kernel.org Cc: Linus Torvalds torvalds@linux-foundation.org Link: https://lore.kernel.org/r/20250215142321.14081-1-david.laight.linux@gmail.co... Link: https://lore.kernel.org/r/b931a4786bc0127aa4c94e8b35ed617dcbd3d3da.174348153... Signed-off-by: Sasha Levin sashal@kernel.org --- tools/objtool/check.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 4030412637ad0..286a2c0af02aa 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -4614,6 +4614,8 @@ static int disas_funcs(const char *funcs) char *cmd;
cross_compile = getenv("CROSS_COMPILE"); + if (!cross_compile) + cross_compile = "";
objdump_str = "%sobjdump -wdr %s | gawk -M -v _funcs='%s' '" "BEGIN { split(_funcs, funcs); }"