From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 5D8CFA40 for ; Wed, 21 Feb 2024 00:38:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708475904; cv=none; b=P41fLnQo9j3mBs8Kf3Zhe02tui4EM51PWio9AOJESfm7ECb4KzlK/0F8CSm6YekKgkk4YgJLiA52ZOqqIHcIIAaB70l0SHl3lhAKfCQz2atJAtv3CFhT2vXZjXc3Wsmkm0WMD+3rM7r00pvBDUeLsLLa9QprA3zAX9WtxhCO7uQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708475904; c=relaxed/simple; bh=Ekkhe4hUxiqeGDPpJMO90zirk/0PhKBcGml4i2vlXoo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=dt0nDqs5vTqryxTw463ZHx+jmB/sS4b9gEAS2IjuJawes0dQpTnaG0zxGMtIBrmwUmAb4oWj1/erBaOYWxt3vkud0WsIbc9Okt9yukq/IPztroahLNUdf/18j35eietLZJK1DtRpafeyRAui/xHPBudhoAZLrFKkjqAzEwDpeB4= 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=209.85.166.199 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-il1-f199.google.com with SMTP id e9e14a558f8ab-36516d55c5fso33222615ab.2 for ; Tue, 20 Feb 2024 16:38:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708475901; x=1709080701; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=OnataEXxpks9beB1qE4GL4ZlXHU9MCHB3WDNJabYpEs=; b=tsheL6TMNZZYBDTCzlmfBs32Glq4YqZmUjJvY8WfmIcBdU/oq6yERsrquWTHgkEe9k HRli4aRVIQgsttkCSmPhHM5r8qhjyzzUPUI/PZVT/Ku9PgOuaaxGlKyDzlhxHYoH5ezD r+y67t41D5MluB9Abm0TdPT0QecJIVAFSKkU9cOFPKdZI8A7QR4reW+nA/EGtT5EoTI5 coPvtT+DKMal0QPQMNS2TuuPJLyklJL47OqyFowYNzOSHKetcOB+QL6JUZtNQdYIt3Xe 9lFDcTi/8H/b6+3wju4ATTrJs9kSO1NxOD4irHIxTynK1/Nc1gwP28jOn9nA8rpt+nw+ b2lw== X-Forwarded-Encrypted: i=1; AJvYcCVhGMy1hRGpGbxGHIBPDVfvSHHDlzZLIY6L8mmMx7Gpo/NxAB7UD2R20bvXjcS5hicOmlEbnoyA7IBXlJcaq4PWmleM5P0PwSMPo0U= X-Gm-Message-State: AOJu0YxFitGqTl0jExIyw1SwtCcVgJx5uTvsZDf16Et7yIxfNf0xKqfZ n2Zn41higugDYM2LJBEnZproMjfON/DTCO+5eLbs2JhKpy8DdKnlNvBmtcdWKRXPwMTAKbuPZtF C/yJfdtfoPdnTS/OBsKPweD4ZbvhiQm8Je62lmOeiBEC4iR5pkz8xHU4= X-Google-Smtp-Source: AGHT+IEyEZOGy10rBoBXIjejLD//p8kfRqTq3m+niDekIjhdc7usTsHfKwrAbTBpJuyTDKlsOptq1hrpWLiYohyGnBkSi/5Lsa+T Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1be9:b0:365:3e12:3eb1 with SMTP id y9-20020a056e021be900b003653e123eb1mr343502ilv.1.1708475901614; Tue, 20 Feb 2024 16:38:21 -0800 (PST) Date: Tue, 20 Feb 2024 16:38:21 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003922d30611d98bab@google.com> Subject: [syzbot] [media?] WARNING in cec_data_cancel From: syzbot To: hverkuil-cisco@xs4all.nl, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 905b00721763 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=117a5b52180000 kernel config: https://syzkaller.appspot.com/x/.config?x=c9378409372fa395 dashboard link: https://syzkaller.appspot.com/bug?extid=57d7c816f3eb3c02ffa9 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/afc82f43a122/disk-905b0072.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0b11ab3a34e1/vmlinux-905b0072.xz kernel image: https://storage.googleapis.com/syzbot-assets/eff038048b1b/Image-905b0072.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+57d7c816f3eb3c02ffa9@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1133 at drivers/media/cec/core/cec-adap.c:365 cec_data_cancel+0x620/0x7bc drivers/media/cec/core/cec-adap.c:365 Modules linked in: CPU: 1 PID: 1133 Comm: syz-executor.4 Tainted: G B 6.8.0-rc4-syzkaller-g905b00721763 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : cec_data_cancel+0x620/0x7bc drivers/media/cec/core/cec-adap.c:365 lr : cec_data_cancel+0x620/0x7bc drivers/media/cec/core/cec-adap.c:365 sp : ffff800097c87730 x29: ffff800097c87740 x28: ffff0000c86cc810 x27: ffff0000c86cc800 x26: dfff800000000000 x25: 1fffe0001a08c4df x24: 0000000000000000 x23: 0000000000000040 x22: 0000000000000000 x21: ffff0000d04626f8 x20: ffff0000d0462000 x19: ffff0000c86cc800 x18: 1fffe00036804796 x17: ffff80008ec8d000 x16: ffff800080275750 x15: 0000000000000001 x14: 1ffff00012f90ea0 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 00000000000008e5 x9 : ffff8000ac1bf000 x8 : 00000000000008e6 x7 : 0000000000000000 x6 : ffff800086e8a5fc x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800080316bac x2 : ffff0000c86cc800 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: cec_data_cancel+0x620/0x7bc drivers/media/cec/core/cec-adap.c:365 cec_transmit_msg_fh+0xfc0/0x1a74 cec_transmit drivers/media/cec/core/cec-api.c:230 [inline] cec_ioctl+0x239c/0x37b0 drivers/media/cec/core/cec-api.c:534 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x1318/0x3478 kernel/fork.c:2441 softirqs last enabled at (0): [] copy_process+0x1340/0x3478 kernel/fork.c:2442 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ end trace 0000000000000000 ]--- --- 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