From nobody Sat Jun 13 22:13:44 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4729248164B; Tue, 5 May 2026 10:56:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777978604; cv=none; b=jXUk2clN8AZXLA2V/RrdcJWLtb9b+RWploQS4hV0ZLhMvLebQcWVd4G8IHtvg/THzF7fEC2/g3IcusCy3hGcCsjSqlE4GEs7SoRqTXKzfvLGu+XZfaxyeUilExHFFhfUkGKX6SoYcxhFxn2i9RXiIDWIo1zDaIOqU7M0e0Bp44c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777978604; c=relaxed/simple; bh=wq7jOjDbnVNSMZeUh7TaEfghJMgiugEp4FI9OffLDWI=; h=Date:From:To:Subject:Cc:MIME-Version:Message-ID:Content-Type; b=Qp4ifgaeofFnDK/YYR9Ul0JPhk+GNUOPbj7BN5WHtZeg3gbksSJGLG674Md3XnEOQfh5Aq4RLJGquM8kAatbsE1mOalABqhxUyXus5/x6mP8m8WQK2I3kHLIMxJYC4SHVap0xjS9BD5TyO+RLe+nveSO+AO8rYp2wrW4bqL8nNA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=i+JuHAe7; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=sDk7pv7i; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="i+JuHAe7"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="sDk7pv7i" Date: Tue, 05 May 2026 10:56:40 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1777978601; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=qorCr5SGVbYS1fXwNPu3l2MQaXEENSNWRDWahCvdcqY=; b=i+JuHAe7CJuyB1J2M2yhEZ3rcqaIKHMTrq8POAgGMJZD3wOGLTyex4CKFC4uC+TR0PcPRK bt6aq+wuHSU2M2ILACGtJueLP6vwCvomeOsUpw5UAVKjL0moOUJkUYlYidLVbEDmo6lw4h 7M35lbJOhNjqq2+zs/n1BPdcsS8sc9JPRBOihWImpGZLpJKxTe9HqKAux6itOikmqXGhVB a2zbM51/lvKkFkfmo/p7zmekKUH6UpBHwZYSTwqAA3AzR4l2Eg37DjszvWWGGLaHnXwAuH QWpmUX1K7z+JMrmsKbJ5lDpu1qBmOMSxwGSTbsTNhUlHYRKuxvjQBaDdiMc2jA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1777978601; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=qorCr5SGVbYS1fXwNPu3l2MQaXEENSNWRDWahCvdcqY=; b=sDk7pv7ixjJtU6VzXrCf/qkN2ts8Iog4am1qRXO/VJjcL2tJbQ9/Efe2+86GxQcSzFV8nA w/c+MdMi+M+kcfDQ== From: "tip-bot2 for Josh Poimboeuf" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: objtool/core] objtool/klp: Fix cloning of zero-length section symbols Cc: Song Liu , Miroslav Benes , Josh Poimboeuf , x86@kernel.org, linux-kernel@vger.kernel.org Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <177797860060.424702.5995996539395744638.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the objtool/core branch of tip: Commit-ID: 98377f3ba7c02d6eb34e203c9f9823bc62b0d231 Gitweb: https://git.kernel.org/tip/98377f3ba7c02d6eb34e203c9f9823bc6= 2b0d231 Author: Josh Poimboeuf AuthorDate: Thu, 09 Apr 2026 18:35:01 -07:00 Committer: Josh Poimboeuf CommitterDate: Mon, 04 May 2026 21:16:00 -07:00 objtool/klp: Fix cloning of zero-length section symbols Fix NULL dereference when cloning a symbol from an empty section. sec->data is only populated for sections with non-zero size. Fixes: dd590d4d57eb ("objtool/klp: Introduce klp diff subcommand for diffin= g object files") Acked-by: Song Liu Reviewed-by: Miroslav Benes Signed-off-by: Josh Poimboeuf --- tools/objtool/klp-diff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/objtool/klp-diff.c b/tools/objtool/klp-diff.c index a226e99..17a6146 100644 --- a/tools/objtool/klp-diff.c +++ b/tools/objtool/klp-diff.c @@ -681,7 +681,7 @@ static struct symbol *__clone_symbol(struct elf *elf, s= truct symbol *patched_sym size_t size; =20 /* bss doesn't have data */ - if (patched_sym->sec->data->d_buf) + if (patched_sym->sec->data && patched_sym->sec->data->d_buf) data =3D patched_sym->sec->data->d_buf + patched_sym->offset; =20 if (is_sec_sym(patched_sym))