From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 5DE727FBA2 for ; Sat, 29 Nov 2025 18:41:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764441714; cv=none; b=lVrWdsbOCyT2Y6G8HGGOp1OndmRjKTZBTIvp1ziBmbQmuBh6UFIoUdR/4nF7XOIsOk/ODZ+EBS2ik2h48MUmhDrXxsQ3+Uua64lOVLMFnDw28Qo/QqLUrgEFq9mqCS7VjPYJ3Qb0uk2r6HB7o3sMXbr9yw5NrGcTjycDjeEs9tE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764441714; c=relaxed/simple; bh=KrCQq5cG6cSlpyocMeCMd3Kpl/EmfN5hvOuL3FtVQsw=; h=Date:To:From:Subject:Message-Id; b=EnKSSfwGvtMEcC9kSgJDMnY/i2jnjNggWYPwI3bA1ns3oZDR3u1bpLcrVNhaz2OtCrZgB74SbTHJAqYZ719huegLrJsUNUyMYDvF5MVZZ1aJTFdql7/XfrxYUt/jiIZDM1lFg9RGnJTLsuY6q0o3Pu2o8QnQtyYuIy+pUp5rSGY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=pQcrBZ8t; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="pQcrBZ8t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA2CFC4CEF7; Sat, 29 Nov 2025 18:41:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1764441713; bh=KrCQq5cG6cSlpyocMeCMd3Kpl/EmfN5hvOuL3FtVQsw=; h=Date:To:From:Subject:From; b=pQcrBZ8ttDQ3YIBjmM024tk146kF4tQi3Ayd20kPeECXE3/QGFkr5tGLsc4zdgA1Y prpzrVp7HkloQ99Z4NDdSE+i79LIc5qqZXnrJjeylPFeFpVF76A7LUn0GGTfVsMEJg 8tkruJ3bnhKXZnsW5bUy2F3tgjfWDfX2i1m9GoR8= Date: Sat, 29 Nov 2025 10:41:53 -0800 To: mm-commits@vger.kernel.org,vbabka@suse.cz,surenb@google.com,shuah@kernel.org,rppt@kernel.org,peterx@redhat.com,nathan@kernel.org,morbo@google.com,mhocko@suse.com,lorenzo.stoakes@oracle.com,liam.howlett@oracle.com,justinstitt@google.com,ankitkhushwaha.linux@gmail.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] selftests-mm-uffd-initialize-char-variable-to-null.patch removed from -mm tree Message-Id: <20251129184153.DA2CFC4CEF7@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: selftests/mm/uffd: initialize char variable to Null has been removed from the -mm tree. Its filename was selftests-mm-uffd-initialize-char-variable-to-null.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Ankit Khushwaha Subject: selftests/mm/uffd: initialize char variable to Null Date: Wed, 26 Nov 2025 21:38:30 +0530 In "uffd-stress.c" & "uffd-unit-tests.c". address of char variable having garbage value (uninitialized) is passed to 'write' syscall triggers warning. uffd-stress.c:246:39: warning: variable 'c' is uninitialized when passed as a const pointer argument here [-Wuninitialized-const-pointer] uffd-unit-tests.c:581:31: warning: variable 'c' is uninitialized when passed as a const pointer argument here [-Wuninitialized-const-pointer] so the fix is to assign char variable to '\0' to prevent writing of garbage value. Link: https://lkml.kernel.org/r/20251126160830.52124-1-ankitkhushwaha.linux@gmail.com Signed-off-by: Ankit Khushwaha Reviewed-by: Mike Rapoport (Microsoft) Cc: Bill Wendling Cc: Justin Stitt Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Nathan Chancellor Cc: Peter Xu Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/uffd-stress.c | 2 +- tools/testing/selftests/mm/uffd-unit-tests.c | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) --- a/tools/testing/selftests/mm/uffd-stress.c~selftests-mm-uffd-initialize-char-variable-to-null +++ a/tools/testing/selftests/mm/uffd-stress.c @@ -241,7 +241,7 @@ static int stress(struct uffd_args *args return 1; for (cpu = 0; cpu < gopts->nr_parallel; cpu++) { - char c; + char c = '\0'; if (bounces & BOUNCE_POLL) { if (write(gopts->pipefd[cpu*2+1], &c, 1) != 1) err("pipefd write error"); --- a/tools/testing/selftests/mm/uffd-unit-tests.c~selftests-mm-uffd-initialize-char-variable-to-null +++ a/tools/testing/selftests/mm/uffd-unit-tests.c @@ -543,7 +543,7 @@ static void uffd_minor_test_common(uffd_ { unsigned long p; pthread_t uffd_mon; - char c; + char c = '\0'; struct uffd_args args = { 0 }; args.gopts = gopts; @@ -759,7 +759,7 @@ static void uffd_sigbus_test_common(uffd pthread_t uffd_mon; pid_t pid; int err; - char c; + char c = '\0'; struct uffd_args args = { 0 }; args.gopts = gopts; @@ -819,7 +819,7 @@ static void uffd_events_test_common(uffd pthread_t uffd_mon; pid_t pid; int err; - char c; + char c = '\0'; struct uffd_args args = { 0 }; args.gopts = gopts; @@ -1125,7 +1125,7 @@ uffd_move_test_common(uffd_global_test_o { unsigned long nr; pthread_t uffd_mon; - char c; + char c = '\0'; unsigned long long count; struct uffd_args args = { 0 }; char *orig_area_src = NULL, *orig_area_dst = NULL; _ Patches currently in -mm which might be from ankitkhushwaha.linux@gmail.com are