From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DB70C433F5 for ; Mon, 15 Nov 2021 12:19:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB58461C12 for ; Mon, 15 Nov 2021 12:19:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229613AbhKOMWV (ORCPT ); Mon, 15 Nov 2021 07:22:21 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:34677 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230477AbhKOMWT (ORCPT ); Mon, 15 Nov 2021 07:22:19 -0500 Received: by mail-il1-f197.google.com with SMTP id d3-20020a056e02050300b0027578c6d9aaso10395571ils.1 for ; Mon, 15 Nov 2021 04:19:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=wIjelldcIGTV2BDMoHCyCI4gAKHEihq72N4Vjo2zKnQ=; b=Gk9eCrspxRi9NnAVhpfn/N7cQxJZ0YeHwEQeCzwuGrev6aySca6lf0xKQi4heoXnUO qlMHFPdR4a/y15+V2hTNolRX3pnxMD5fqvGK4labFYSF02hqOU34I27/NkSeNOW9n3Vu iP4yc5dn4fO62F6H9MWE/1nnOyUUwFz/qAlrnWVxAiwrdHbaQqSjBXNl0AvzoMvmPnwX W+T7P5qWbOeJqHm4/Xomo+AaEZIaZHgwWjyfFPQLrACdjIW99N7EPNAKXiS+CCD5nar5 Q812LeB5AjKk21qLrjxQHn9SZ2fz3WgKipnQgXf9nUZfo9nChrwRm2AS6i7O3JLBCJVD uksg== X-Gm-Message-State: AOAM531oCgFV+32hmQNLmgcedrAmISNPBaU7Z9fmpo7rrraZ2DQDXjS3 CBoBRmZG7Q+w6sjz36ZNY6kwAopN7ZnmMRczF9VC76jVpskJ X-Google-Smtp-Source: ABdhPJxcGEygl3LDrMOi0TUuRjTHSwIZu5CKjWhCuTHoV+sa0NCOHyg7DvQNE8oMOL2g+Bi19XGA66uPzRog5/UpzQ519LoMQJI1 MIME-Version: 1.0 X-Received: by 2002:a05:6602:2c45:: with SMTP id x5mr25440477iov.98.1636978763620; Mon, 15 Nov 2021 04:19:23 -0800 (PST) Date: Mon, 15 Nov 2021 04:19:23 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b5e7f105d0d2d165@google.com> Subject: [syzbot] WARNING in __i2c_transfer (2) From: syzbot To: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, wsa@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: c8c109546a19 Merge tag 'zstd-for-linus-v5.16' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10a5bb32b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=a262045c4c15a9e0 dashboard link: https://syzkaller.appspot.com/bug?extid=e417648b303855b91d8a compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e417648b303855b91d8a@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 12113 at drivers/i2c/i2c-core-base.c:2178 __i2c_transfer+0xa14/0x17c0 drivers/i2c/i2c-core-base.c:2178 Modules linked in: CPU: 0 PID: 12113 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__i2c_transfer+0xa14/0x17c0 drivers/i2c/i2c-core-base.c:2178 Code: 0f 94 c7 31 ff 44 89 fe e8 39 89 8e fb 45 84 ff 0f 84 26 fd ff ff e8 4b 85 8e fb 0f 1f 44 00 00 e9 17 fd ff ff e8 3c 85 8e fb <0f> 0b 41 bc ea ff ff ff e9 9e fd ff ff e8 2a 85 8e fb 44 89 ee bf RSP: 0018:ffffc90004a67ce8 EFLAGS: 00010212 RAX: 0000000000008838 RBX: 0000000000000010 RCX: ffffc90011e05000 RDX: 0000000000040000 RSI: ffffffff85e961b4 RDI: 0000000000000003 RBP: ffff88814a28cb58 R08: 0000000000000000 R09: ffffffff8ff75b57 R10: ffffffff85e957d8 R11: 0000000000000000 R12: 0000000000000010 R13: 0000000000000000 R14: ffff88814a28cb78 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0063) knlGS:00000000f4460b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002c021000 CR3: 0000000070b50000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: i2c_transfer+0x1e6/0x3e0 drivers/i2c/i2c-core-base.c:2269 i2cdev_ioctl_rdwr+0x583/0x6a0 drivers/i2c/i2c-dev.c:297 compat_i2cdev_ioctl+0x419/0x4f0 drivers/i2c/i2c-dev.c:561 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:972 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6e66549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f44605fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000707 RDX: 00000000200000c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- 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.