From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f205.google.com (mail-il1-f205.google.com [209.85.166.205]) (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 7C49422D7BF for ; Wed, 16 Apr 2025 07:33:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744788810; cv=none; b=ShSBgGfD3gCuK2/Wci1geogYS4qJUgs6TH22lGh8BrGbzF1XOK496uv13frW3ALQIwxAZn0qzUNVX+CeNrzrqxDvPe1eBq8RIYkiZhXre9RCw1qc9MXHE8Zcf0W/JbRiYzIqHBixoic/VoXgaSnxy5teZo3lDUvPyYJm/6W16rQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744788810; c=relaxed/simple; bh=lf0sVW6jYtUgT2o2RkcbFjDNES+AjyvQndO/InJa+q0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=gI1KHX/mvIrvAXuS0a44j7Pk1hZWX8xe/EKlGgcE0AVSfSxkIvfadlEhxcDDHzLxAkiworF7A9d8RLRNAVzURcZ/FC6Eo6lK4jzbEzUwdMROEPcCNXsmXBkT5MmhAJt65bq9+y0ojBrON/wMiWOT9A0FqNYT2C7q2wf9xGMmgzc= 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=209.85.166.205 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-f205.google.com with SMTP id e9e14a558f8ab-3d5d6c997d2so61387465ab.0 for ; Wed, 16 Apr 2025 00:33:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744788807; x=1745393607; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=MEN/lEkUULtvsqo0YKjptRWEju8Ni+JhCO35ItlQcUY=; b=G6DKdbxe7XCp/+XXRNcGKoNXWxRkRd6M0DxDE5saWa/yBEnuucOQVwekbkhvZFLM0y ZttqcFHO7+2V4RjsysDKd+Afcvh2IOwPTWNURd6wzytJAPk2znSFp9EIhRMM+DKote8j p8sRNexbJeWKItKtGFPl4lkNNF98BXqNslmn+J5IqNVyzTVWlCLeKT0Qt76HcieCvrc4 cohA54vYEJcQ/3MQpga3nd9rsO79yyaXdt8zYQCZ4wcR7gTgbdE6HFzdeKcgBH5nG9UN CIwMrH6ZECHdFQIKo/+j8Vr6XXbZdLeIsooZk51jbZd7BeIpFZAhnWM7MWKhzl5SOPBZ IvyQ== X-Forwarded-Encrypted: i=1; AJvYcCWn4OE5ptnb0R1/Rb/GLbJA0/7G76J5WU/h+4pAyQojlSFt2SGcDiVab2iwjuLB7cUGcMW8Vq4=@vger.kernel.org X-Gm-Message-State: AOJu0YzUsJ6x9BQo1TfTf2GviL8wu7dEBuLit0fznciT/OTBZTfmi4Fq b5cOZechp+d+iF0YmRYB2EZjxdY0idLA49YpDNNEaQPp2trS++UzDg3hhJmtmM6P5jqZWiv7BFl q6mY5gbZE1h+XGv9HHX1XGVOll0JaAmZL6a8bSnk1xeDLl9O0iwyH614= X-Google-Smtp-Source: AGHT+IFT/w9xUUFTSf9LA7wrJS7PggyZBn3ezGVMeRtu8n8Crv724JttqOfuTQszH2uDxIWi5RE8UG4kPVJXUVHWqUYAFzGD0fU3 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:184e:b0:3d4:3d63:e070 with SMTP id e9e14a558f8ab-3d815b63b22mr7131685ab.16.1744788807531; Wed, 16 Apr 2025 00:33:27 -0700 (PDT) Date: Wed, 16 Apr 2025 00:33:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67ff5d47.050a0220.5cdb3.0002.GAE@google.com> Subject: [syzbot] [tipc?] general protection fault in tipc_mon_reinit_self (3) From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 900241a5cc15 Merge tag 'drm-fixes-2025-04-11-1' of https:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16128870580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7a4e108575159039 dashboard link: https://syzkaller.appspot.com/bug?extid=ed60da8d686dc709164c compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-900241a5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/792caadc5fb3/vmlinux-900241a5.xz kernel image: https://storage.googleapis.com/syzbot-assets/c386404e8ac9/bzImage-900241a5.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ed60da8d686dc709164c@syzkaller.appspotmail.com tipc: Node number set to 1055423674 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 3 UID: 0 PID: 6017 Comm: kworker/3:5 Not tainted 6.15.0-rc1-syzkaller-00246-g900241a5cc15 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: events tipc_net_finalize_work RIP: 0010:tipc_mon_reinit_self+0x11c/0x210 net/tipc/monitor.c:719 Code: 8b 54 24 08 48 8d 78 10 48 89 f9 48 c1 e9 03 0f b6 0c 29 84 c9 74 09 80 f9 03 0f 8e b2 00 00 00 8b 48 10 48 89 d0 48 c1 e8 03 <0f> b6 04 28 84 c0 74 04 3c 03 7e 7d 89 0a 4c 89 ff e8 ce c1 65 00 RSP: 0018:ffffc9000356fb68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000003ee87cba RDX: 0000000000000000 RSI: ffffffff8dbc56a7 RDI: ffff88804c2cc010 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000007 R13: fffffbfff2111097 R14: ffff88804ead8000 R15: ffff88804ead9010 FS: 0000000000000000(0000) GS:ffff888097ab9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000f720eb00 CR3: 000000000e182000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_net_finalize+0x10b/0x180 net/tipc/net.c:140 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:tipc_mon_reinit_self+0x11c/0x210 net/tipc/monitor.c:719 Code: 8b 54 24 08 48 8d 78 10 48 89 f9 48 c1 e9 03 0f b6 0c 29 84 c9 74 09 80 f9 03 0f 8e b2 00 00 00 8b 48 10 48 89 d0 48 c1 e8 03 <0f> b6 04 28 84 c0 74 04 3c 03 7e 7d 89 0a 4c 89 ff e8 ce c1 65 00 RSP: 0018:ffffc9000356fb68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000003ee87cba RDX: 0000000000000000 RSI: ffffffff8dbc56a7 RDI: ffff88804c2cc010 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000007 R13: fffffbfff2111097 R14: ffff88804ead8000 R15: ffff88804ead9010 FS: 0000000000000000(0000) GS:ffff888097ab9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000f720eb00 CR3: 000000000e182000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8b 54 24 08 mov 0x8(%rsp),%edx 4: 48 8d 78 10 lea 0x10(%rax),%rdi 8: 48 89 f9 mov %rdi,%rcx b: 48 c1 e9 03 shr $0x3,%rcx f: 0f b6 0c 29 movzbl (%rcx,%rbp,1),%ecx 13: 84 c9 test %cl,%cl 15: 74 09 je 0x20 17: 80 f9 03 cmp $0x3,%cl 1a: 0f 8e b2 00 00 00 jle 0xd2 20: 8b 48 10 mov 0x10(%rax),%ecx 23: 48 89 d0 mov %rdx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 04 je 0x36 32: 3c 03 cmp $0x3,%al 34: 7e 7d jle 0xb3 36: 89 0a mov %ecx,(%rdx) 38: 4c 89 ff mov %r15,%rdi 3b: e8 ce c1 65 00 call 0x65c20e --- 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