From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (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 43E192798E3 for ; Sat, 3 May 2025 17:08:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746292113; cv=none; b=VcversjHXSCzWe5Z9CYjF3/nuj9XgMKQdwYt2QztgPyzaiF+rV6hxpAb+AksyYJV2lf/ugzPwgVvH+LsDuJunBJkPhS/SuoQBj9WxqAfW/Il2d9Hc+ttby8e+uPmtG85vPIWwizpVe/KOxX3GmYkrdSiALHXrrvKhsuoo/E1gn0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746292113; c=relaxed/simple; bh=pD9eehmpVWpMruL4h/vCdvngzj3Ds9Oh3xggdahQITE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=V2HJI0zNaBWXWdiRZJRaJBo2jBXObu/l/FIk6SkIiLu5Wy3qXaHQn/holU3RhL4OKeWmJbWvKTib9cIb91+5DyBZ+j5O8N7izN45TeHalzXaFgpgFnasATs/2rXb3XzHswucxVMcFVj3X2/7VtqMAkvrvbD9/5orFpfaYC0kHAs= 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=209.85.166.207 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-f207.google.com with SMTP id e9e14a558f8ab-3d458e61faaso32155085ab.0 for ; Sat, 03 May 2025 10:08:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746292110; x=1746896910; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Zm2p9gNHvGZBNicUPyCdXE99nGOc21eJHP7npsFiTP0=; b=pxnYBMBN1vycWRJx7U7j785DjegNv6T4rCedndbVaxXRV4AC8UqEHVMX4zqNsy4Q2x pwQAPEvQIQxTCrToqg9HIX9aczRJyLYejqSDVcHiPKQ+rViUkmjMKTyCT7rFS5VqqOem 1QfvzQDI2JDm6wwKuuHV/iJOzevjr5GBQjB5M9vtaF/MMLVXBlMZGcFxxdO+WJAWHAuM 6592vJ4taaHv6GDpM51quLuYCF502KLwQDPMWnFBeJhgKi/UheWEAGf6+jdMZrOkgKLs ttPGOUYbaWBOzgP67ZCbdvhZANHqT3Rcvth20s2VtWKpmGBcOozKnKa4rT1Qtm8kjkWy EnOA== X-Forwarded-Encrypted: i=1; AJvYcCWbACknkRbAKs7x9eVD8C1uCcfvCKNAsGzevSTOKSyTebZm6AA3UAqyLgQrTX1m3tdPzS60hC7qOQwafA==@vger.kernel.org X-Gm-Message-State: AOJu0YwduHtN6DMIhpaAPJ12qy67t5adW2GoOX4HLhB0BMyuW9qoEJ3D i05rV5++hgiwA0QPZ1sjOul0MPTR0M3BRUdQb1MjgJpKfeuk5xjXEuZCAwHmdyznhKmkqgeSToz UGbpmgpB+RUfrVQtxZ7Qzut3Or34PBddMfXORMECq7G/5gvXITWLZS3k= X-Google-Smtp-Source: AGHT+IGGadKujtGYwYE5guN/patqBkmMEWeFMw1LB7z5zxe1SxMLXTrRP8lL00zbAziBp4NB4FjQPgoV/xLioXF4wY2ymGB6RI1p Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3e8d:b0:3d9:3675:f531 with SMTP id e9e14a558f8ab-3d97ae710cbmr58098465ab.6.1746292110307; Sat, 03 May 2025 10:08:30 -0700 (PDT) Date: Sat, 03 May 2025 10:08:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68164d8e.050a0220.11da1b.0019.GAE@google.com> Subject: [syzbot] [sound?] BUG: unable to handle kernel paging request in snd_pcm_format_set_silence (2) From: syzbot To: linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, perex@perex.cz, syzkaller-bugs@googlegroups.com, tiwai@suse.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: ca91b9500108 Merge tag 'v6.15-rc4-ksmbd-server-fixes' of g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15e8f374580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3c7669b03e3aef84 dashboard link: https://syzkaller.appspot.com/bug?extid=32d4647f551007595173 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=166a88d4580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17a18774580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/74ec1ffa5ea7/disk-ca91b950.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e357e48a5249/vmlinux-ca91b950.xz kernel image: https://storage.googleapis.com/syzbot-assets/c1f75a3b9a37/bzImage-ca91b950.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+32d4647f551007595173@syzkaller.appspotmail.com BUG: unable to handle page fault for address: ffffc9000cd2e000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 1b400067 P4D 1b400067 PUD 1c2ff067 PMD 31ddb067 PTE 0 Oops: Oops: 0002 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 6904 Comm: syz-executor975 Not tainted 6.15.0-rc4-syzkaller-00021-gca91b9500108 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:memset_orig+0x33/0xb0 arch/x86/lib/memset_64.S:68 Code: 01 01 01 01 01 01 01 01 48 0f af c1 41 89 f9 41 83 e1 07 75 74 48 89 d1 48 c1 e9 06 74 39 66 0f 1f 84 00 00 00 00 00 48 ff c9 <48> 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47 RSP: 0018:ffffc90003477b28 EFLAGS: 00010216 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000005b3f RDX: 0000000000200000 RSI: 0000000000000000 RDI: ffffc9000cd2e000 RBP: 0000000000200000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffc9000cc9b000 R11: 0000000000000000 R12: 0000000000100000 R13: ffffc9000cc9b000 R14: ffffffff8cb35e9c R15: 000000000000001c FS: 000055558204d380(0000) GS:ffff888124aef000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000cd2e000 CR3: 00000000309d4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: snd_pcm_format_set_silence+0x211/0x340 sound/core/pcm_misc.c:441 snd_pcm_oss_change_params_locked+0x1eb4/0x3b40 sound/core/oss/pcm_oss.c:1078 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1105 [inline] snd_pcm_oss_make_ready+0xe6/0x1b0 sound/core/oss/pcm_oss.c:1164 snd_pcm_oss_sync+0x1de/0x840 sound/core/oss/pcm_oss.c:1730 snd_pcm_oss_release+0x28b/0x310 sound/core/oss/pcm_oss.c:2575 __fput+0x3ff/0xb70 fs/file_table.c:465 task_work_run+0x14d/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa65d3ffbe9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcae655848 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa65d3ffbe9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000002 RBP: 00000000000f4240 R08: 0000000000008000 R09: 0000000000008000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000016f19 R13: 00007ffcae65586c R14: 00007ffcae655880 R15: 00007ffcae655870 Modules linked in: CR2: ffffc9000cd2e000 ---[ end trace 0000000000000000 ]--- RIP: 0010:memset_orig+0x33/0xb0 arch/x86/lib/memset_64.S:68 Code: 01 01 01 01 01 01 01 01 48 0f af c1 41 89 f9 41 83 e1 07 75 74 48 89 d1 48 c1 e9 06 74 39 66 0f 1f 84 00 00 00 00 00 48 ff c9 <48> 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47 RSP: 0018:ffffc90003477b28 EFLAGS: 00010216 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000005b3f RDX: 0000000000200000 RSI: 0000000000000000 RDI: ffffc9000cd2e000 RBP: 0000000000200000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffc9000cc9b000 R11: 0000000000000000 R12: 0000000000100000 R13: ffffc9000cc9b000 R14: ffffffff8cb35e9c R15: 000000000000001c FS: 000055558204d380(0000) GS:ffff888124aef000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000cd2e000 CR3: 00000000309d4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 01 01 add %eax,(%rcx) 2: 01 01 add %eax,(%rcx) 4: 01 01 add %eax,(%rcx) 6: 01 01 add %eax,(%rcx) 8: 48 0f af c1 imul %rcx,%rax c: 41 89 f9 mov %edi,%r9d f: 41 83 e1 07 and $0x7,%r9d 13: 75 74 jne 0x89 15: 48 89 d1 mov %rdx,%rcx 18: 48 c1 e9 06 shr $0x6,%rcx 1c: 74 39 je 0x57 1e: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 25: 00 00 27: 48 ff c9 dec %rcx * 2a: 48 89 07 mov %rax,(%rdi) <-- trapping instruction 2d: 48 89 47 08 mov %rax,0x8(%rdi) 31: 48 89 47 10 mov %rax,0x10(%rdi) 35: 48 89 47 18 mov %rax,0x18(%rdi) 39: 48 89 47 20 mov %rax,0x20(%rdi) 3d: 48 rex.W 3e: 89 .byte 0x89 3f: 47 rex.RXB --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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