From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo2-f7.google.com (mail-oo2-f7.google.com [74.125.231.135]) (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 8BA623CEBA7 for ; Tue, 15 Sep 2026 03:40:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.135 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789443625; cv=none; b=O8bZkrbKyVz7Epxu8nyWiTTtwx6OtNn/jUuOCm4sVynilB43ljm9FqiKWBVWqbB+2oNWzE993tU0djRIALQ8JKD70ZRDXFP5sg/Nlbrvl6DKz/XRdWWgIczHMRQwht4AxIYvYndkn4YDq6ryIXTCFRj1TwQGQ+dy3d90OmGHRIo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789443625; c=relaxed/simple; bh=ZcY6JPh1zNj4rkC+lrc3gFdD95dTdXZZkhUPw7qCTRw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=GLX3RAe4K/wcpeD/UavgYr0h5tua4uRs6c2kIBKpoegUzV5Z1k8BJ85xrpx4uaGAbN05Ky1DMYTWkWDTRmtZY990RiLP21JsD+V9/96OoFQ8hAcK9UUaU2c+x2/wjyJr8nZ1Dxm0F4tewrPJdkdJrwpSHc9liiH6A2H7yj1IdAo= 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=74.125.231.135 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-oo2-f7.google.com with SMTP id 006d021491bc7-6b1bebb3ae8so1581216eaf.1 for ; Mon, 14 Sep 2026 20:40:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789443622; x=1790048422; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=ATIiePy97NGhXTC8rWXIR2/eUm2iTgVkiucL0AeqS2c=; b=sP81rpYQNnW7EMJlH4uQrlQPpQmBzrpzjU0w7uYNLqZYOb2dw7lZg6saY3ThpYaEPK LNs32FM5BOAoF8M+mgAXPQZWhO7jMG6DYA7eUK5H+7tv5S2oBWTXvgD53B/BvFHnaAeQ I5CN820kntBt7nxcpYi0Zz5j8DgwG+6SSXDngTtZtwB6iL0MoDmyqL33p8uC9Ld2AXSG di8YMr8Bb48q0caYzH+QMIX2V0nJ/vt183Bnb24QdzCBh8OSHpZTGQdhLH5zaFq/ciVe 4SJU6btgOIvbIlRrblQVUJqwQkFQ8K7AwN3KCQY0iayUi9oSU8YOv4NodON9MKCFwcyb gsIw== X-Forwarded-Encrypted: i=1; AKwUvBw9GwhFW9FscIEK/nZ7ddfDuUOnWKWJPe370GEE+jW13hncwV5GA3q/ysEtitaP/4zM0Cpzp8ev7BCFFJQ=@vger.kernel.org X-Gm-Message-State: AFuF++kR+S8dG6rLvrX5Q3Q9CVPITfbluk7PMVImyJzgSDBH2TKv2EwK 0k03X0KQFiy9w+m5KRcWgp+6gz5sX2YCZyOJwypOoM6hZILSYWOCyiiirqBA2f4zWVnjckJ0UgC bn45tnppJICSOOxjPcd+UM+VIxmAH0VgEBi9/FuyyXxKnkw6j5Xge6hdiuUA= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1988:b0:6c1:fd93:5292 with SMTP id 006d021491bc7-6c541d3ff08mr6133761eaf.17.1789443622633; Mon, 14 Sep 2026 20:40:22 -0700 (PDT) Date: Mon, 14 Sep 2026 20:40:22 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa8be26.a211d2ce.1a5198.02a4.GAE@google.com> Subject: [syzbot] [iomap?] WARNING in iomap_read_inline_data (2) From: syzbot To: brauner@kernel.org, djwong@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 50d05c7c76c9 Merge tag 'landlock-7.3-rc3' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15f67749580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e909ffe6b35dddb7 dashboard link: https://syzkaller.appspot.com/bug?extid=079e16bc964fb91acb4a compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-50d05c7c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f17e999d8f8c/vmlinux-50d05c7c.xz kernel image: https://storage.googleapis.com/syzbot-assets/c22ded366230/bzImage-50d05c7c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+079e16bc964fb91acb4a@syzkaller.appspotmail.com ------------[ cut here ]------------ size > iomap->length WARNING: fs/iomap/buffered-io.c:431 at iomap_read_inline_data+0xa7b/0xc40 fs/iomap/buffered-io.c:431, CPU#0: syz.0.0/5317 Modules linked in: CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:iomap_read_inline_data+0xa7b/0xc40 fs/iomap/buffered-io.c:431 Code: 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d e9 0c 45 78 09 cc e8 46 17 56 ff 90 0f 0b 90 bd fb ff ff ff eb da e8 36 17 56 ff 90 <0f> 0b 90 48 bb 00 00 00 00 00 fc ff df 48 8b 44 24 10 80 3c 18 00 RSP: 0018:ffffc9000e5172d8 EFLAGS: 00010293 RAX: ffffffff8271c46a RBX: ffffc9000e517538 RCX: ffff88803ecccb00 RDX: 0000000000000000 RSI: 0000000000000015 RDI: 0000000000000200 RBP: 0000000000001000 R08: ffffea00004e0fc7 R09: 1ffffd400009c1f8 R10: dffffc0000000000 R11: fffff9400009c1f9 R12: ffffc9000e5174e0 R13: ffffea00004e0fc0 R14: 0000000000000015 R15: 1ffff92001ca2ea7 FS: 00007fe7bb50d6c0(0000) GS:ffff88808c2c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f481c6085a1 CR3: 000000001201b000 CR4: 0000000000352ef0 Call Trace: iomap_read_folio_iter+0x30d/0xe80 fs/iomap/buffered-io.c:571 iomap_read_folio+0x58b/0x970 fs/iomap/buffered-io.c:676 ntfs_read_folio+0x3f1/0x4b0 fs/ntfs3/inode.c:856 filemap_read_folio+0x12c/0x3a0 mm/filemap.c:2520 filemap_fault+0xd06/0x13b0 mm/filemap.c:3689 __do_fault+0x138/0x2a0 mm/memory.c:5565 do_shared_fault mm/memory.c:6064 [inline] do_fault mm/memory.c:6138 [inline] do_pte_missing+0x684/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0x746/0x1340 arch/x86/mm/fault.c:1394 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0010:__put_user_4+0xd/0x30 arch/x86/lib/putuser.S:94 Code: 66 89 01 31 c9 0f 01 ca c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <89> 01 31 c9 0f 01 ca e9 c7 95 03 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000e517e50 EFLAGS: 00050246 RAX: 000000000000002a RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000085a7cfd RSI: ffffffff8e702abd RDI: ffffffff8c6dba80 RBP: 000000000000002a R08: ffffffff82205d8f R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1003a3b181 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000005 __sys_socketpair+0xb7/0x560 net/socket.c:1868 __do_sys_socketpair net/socket.c:1934 [inline] __se_sys_socketpair net/socket.c:1931 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1931 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7ba59e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe7bb50cfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007fe7ba826180 RCX: 00007fe7ba59e159 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 RBP: 00007fe7ba63503b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe7ba826218 R14: 00007fe7ba826180 R15: 00007ffc20525218 ---------------- Code disassembly (best guess): 0: 66 89 01 mov %ax,(%rcx) 3: 31 c9 xor %ecx,%ecx 5: 0f 01 ca clac 8: c3 ret 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 48 89 cb mov %rcx,%rbx 20: 48 c1 fb 3f sar $0x3f,%rbx 24: 48 09 d9 or %rbx,%rcx 27: 0f 01 cb stac * 2a: 89 01 mov %eax,(%rcx) <-- trapping instruction 2c: 31 c9 xor %ecx,%ecx 2e: 0f 01 ca clac 31: e9 c7 95 03 00 jmp 0x395fd 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup