From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8057022F386 for ; Thu, 20 Nov 2025 05:21:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763616070; cv=none; b=LiaIUYDUtGeNESUioBJiK7pTgWr8PM5V3Kzpb/PDCWkZSUPERrwrgDKAK7XI5PpxZMb+yKLvfsiw3iqqw06heyI8ezAIW4DjrtwvZDOAu34A+DKoLb7VbOA5rBF8j/0SyKfEYtbgZY7TjOYxpum0pHznvVkMcRpxGR+4GOpmtMw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763616070; c=relaxed/simple; bh=xNsc+7TB+y/97iHZijt66v7fnqPM5UlxdeV3fOmAKak=; h=MIME-Version:Date:Message-ID:Subject:From:To:Cc:Content-Type; b=pxUJs9c9J5o2yfxXzEYuQDiiT1/0rrY8iI8hku/Kv4TQk2Luiu+r9HvsQ7LmvYF20fSy1AZcqol4OclYIiMkje2RgIa4HDxuz8muVhUGFdxmneOmJ2dXA7o0JLpuccGVIDLe1/SW3cYR2b4Te0yVsKDvBnP/MCmCycJi6ZyNQb8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f69.google.com with SMTP id ca18e2360f4ac-9489a3f6e3dso34951739f.0 for ; Wed, 19 Nov 2025 21:21:06 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763616065; x=1764220865; h=content-transfer-encoding:cc:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=zV8swJNG+UWrgoun7qyT+AXI9canhAjpEOvcjHkgNrc=; b=QjHbrY2jvvdk513H1lZWa8ARwwIh3G3vslyv/cILLyuT2gzhV8kMfrgiy0+QCjvSPr ZvUM1RTJy61s2GA+kpqy7T2xLh8FuchBS97i5E+OTH2hOuIedYVpC65AgXeD3M7Apgkf hllAnrWA9v2HBUO8Rqh6PHNul0N5lvICVQXvTYWQo4bAmc/JgvcIWH+op3Vl8m5MeMD1 Es9Y2wQq8A0Z4u7Xc0nffjp2NDq3j2C5MY8DuVj+tzBsm3F63pKRfrO/3siY57PN11hO swgZQnxKbyf/Y9YbVLstv5JCmk1r+Ct3a8tBMvrz+VV3ym/uLneJSjnxiQQmBWk81/yY Tcxw== X-Gm-Message-State: AOJu0Yy1KqrY7vMZJt0YCwJj6KMpZkV7VAzFT2yRPvb4MpuqFAU/BxYy nQW8y3nPa8I81Zheq1dIri82Yh7dCfRpOs4w41QEsibRI35y43bIBx/ZaZwjgjdGaNn5bGIwwGn 8AiMZvrXwqU+0Mm1mcrshm3LFFPCZY4/zgTSnrdcmbMCBciQWVCNxQNssUO0= X-Google-Smtp-Source: AGHT+IEFS8+XPPWncvhXxQAyDC/33egh3IwXkDDsjUbyxqUR/l34vSPg/tk6WDAVkcqEUea/ZYz1l1dtfsxzFVNxpnfYncQ8D9u+ Precedence: bulk X-Mailing-List: syzbot@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a02:384d:0:b0:5b7:12b4:475e with SMTP id 8926c6da1cb9f-5b9541543b6mr1359736173.11.1763616065596; Wed, 19 Nov 2025 21:21:05 -0800 (PST) Date: Wed, 19 Nov 2025 21:21:05 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <691ea541.a70a0220.d98e3.0028.GAE@google.com> Subject: [moderation/CI] Re: folio->mapping == NULL check issue From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable syzbot ci has tested the following series [v1] folio->mapping =3D=3D NULL check issue https://lore.kernel.org/all/20251120035953.1115736-1-ziy@nvidia.com * [RFC PATCH 1/3] mm/huge_memory: prevent NULL pointer dereference in try_f= olio_split_to_order() * [RFC PATCH 2/3] mm/huge_memory: add kernel-doc for folio_split_supported(= ) * [RFC PATCH 3/3] mm/memory-failure: handle min_order_for_split() error cod= e properly and found the following issue: WARNING: kmalloc bug in bpf_prog_alloc_no_stats Full report is available here: https://ci.syzbot.org/series/2a4cc355-ca94-42db-a23e-aa4903987419 *** WARNING: kmalloc bug in bpf_prog_alloc_no_stats tree: mm-new URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/akpm/mm= .git base: 41218ede767f6b218185af65ce919d0cade75f6b arch: amd64 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp= 1~20250708183702.136), Debian LLD 20.1.8 config: https://ci.syzbot.org/builds/2e9b453c-36f8-40d6-a442-d3b26be0c6d= 8/config ------------[ cut here ]------------ Unexpected gfp: 0x400000 (__GFP_ACCOUNT). Fixing up to gfp: 0xdc0 (GFP_KERN= EL|__GFP_ZERO). Fix your code! WARNING: CPU: 1 PID: 6030 at mm/vmalloc.c:3938 vmalloc_fix_flags+0x9c/0xe0 Modules linked in: CPU: 1 UID: 0 PID: 6030 Comm: syz-executor Not tainted syzkaller #0 PREEMPT= (full)=20 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16= .2-1 04/01/2014 RIP: 0010:vmalloc_fix_flags+0x9c/0xe0 Code: 81 e6 1f 52 ee ff 89 74 24 30 81 e3 e0 ad 11 00 89 5c 24 20 90 48 c7 = c7 c0 b9 76 8b 4c 89 fa 89 d9 4d 89 f0 e8 35 2b 6e ff 90 <0f> 0b 90 90 8b 4= 4 24 20 48 c7 04 24 0e 36 e0 45 4b c7 04 2c 00 00 RSP: 0018:ffffc9000410fb00 EFLAGS: 00010246 RAX: d1ff9ff165489d00 RBX: 0000000000000dc0 RCX: ffff888176319d00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffc9000410fb98 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bba684 R12: 1ffff92000821f60 R13: dffffc0000000000 R14: ffffc9000410fb20 R15: ffffc9000410fb30 FS: 00005555625f2500(0000) GS:ffff8882a9f36000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f49adc5c470 CR3: 0000000115d48000 CR4: 00000000000006f0 Call Trace: __vmalloc_noprof+0xf2/0x120 bpf_prog_alloc_no_stats+0x4a/0x4d0 bpf_prog_alloc+0x3c/0x1a0 bpf_prog_create_from_user+0xa7/0x440 do_seccomp+0x7b1/0xd90 __se_sys_prctl+0xc3c/0x1830 do_syscall_64+0xfa/0xfa0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2180390b0d Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 18 00 00 00 48 89 44 = 24 08 48 8d 44 24 20 48 89 44 24 10 b8 9d 00 00 00 0f 05 <48> 3d 00 f0 ff f= f 77 1b 48 8b 54 24 18 64 48 2b 14 25 28 00 00 00 RSP: 002b:00007ffc336f7f90 EFLAGS: 00000246 ORIG_RAX: 000000000000009d RAX: ffffffffffffffda RBX: 00007f218042cf80 RCX: 00007f2180390b0d RDX: 00007ffc336f7ff0 RSI: 0000000000000002 RDI: 0000000000000016 RBP: 00007ffc336f8000 R08: 0000000000000006 R09: 0000000000000071 R10: 0000000000000071 R11: 0000000000000246 R12: 000000000000006d R13: 00007ffc336f8428 R14: 00007ffc336f86a8 R15: 0000000000000000 *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. The email will later be sent to: [akpm@linux-foundation.org baohua@kernel.org baolin.wang@linux.alibaba.com = david@kernel.org dev.jain@arm.com lance.yang@linux.dev liam.howlett@oracle.= com linmiaohe@huawei.com linux-kernel@vger.kernel.org linux-mm@kvack.org lo= renzo.stoakes@oracle.com nao.horiguchi@gmail.com npache@redhat.com ryan.rob= erts@arm.com ziy@nvidia.com] If the report looks fine to you, reply with: #syz upstream