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AJvYcCWXkCiQ+sdHK1e2AEMql4H8r+fCGnemESUKVQHEr7B841E0jtyww841A0XouHnylZQiOUihux+1QwmDb38=@vger.kernel.org X-Gm-Message-State: AOJu0YxAXAEQnlqe4kG309F5kKYKwGUT/r0PrafyVWJpPWDOgLvvrTrm 9zhwAry6xT95ejd2lveG5TtH0WaDISHvdRsOHY8Ow50zFwXmpRWlAPRV717NLfL39+NnKppuJ/W 6t7RxckT19x9cs3xhNmstjaHmmf1DsDF2XLsQzQnTd5JItK/dNKY/fqA= X-Google-Smtp-Source: AGHT+IH5cOD5AlXg5sgkPTJMBJAKYuAdFAI6biDl6aCiZ2fgyiuqWQfeouJqDuxWVZ/LJlMsATdWCsFnzIlD3lgtAedzW71tUN3G Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1b08:b0:3a7:e8df:3fcb with SMTP id e9e14a558f8ab-3a8075c50d9mr1175275ab.7.1733331807621; Wed, 04 Dec 2024 09:03:27 -0800 (PST) Date: Wed, 04 Dec 2024 09:03:27 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67508b5f.050a0220.17bd51.0070.GAE@google.com> Subject: [syzbot] [tipc?] general protection fault in cleanup_bearer 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, ying.xue@windriver.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: c245a7a79602 Add linux-next specific files for 20241203 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=109860f8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=af3fe1d01b9e7b7 dashboard link: https://syzkaller.appspot.com/bug?extid=46aa5474f179dacd1a3b compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=152d8de8580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8cc90a2ea120/disk-c245a7a7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0f6b1a1a0541/vmlinux-c245a7a7.xz kernel image: https://storage.googleapis.com/syzbot-assets/9fa3eac09ddc/bzImage-c245a7a7.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+46aa5474f179dacd1a3b@syzkaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events cleanup_bearer RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline] RIP: 0010:sock_net include/net/sock.h:655 [inline] RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820 Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b RSP: 0018:ffffc9000410fb70 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900 RBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20 R10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline] RIP: 0010:sock_net include/net/sock.h:655 [inline] RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820 Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b RSP: 0018:ffffc9000410fb70 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900 RBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20 R10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055dc220c9950 CR3: 000000007e778000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 18 48 89 sbb %cl,-0x77(%rax) 3: d8 48 c1 fmuls -0x3f(%rax) 6: e8 03 42 80 3c call 0x3c80420e b: 28 00 sub %al,(%rax) d: 74 08 je 0x17 f: 48 89 df mov %rbx,%rdi 12: e8 3c f7 99 f6 call 0xf699f753 17: 48 8b 1b mov (%rbx),%rbx 1a: 48 83 c3 30 add $0x30,%rbx 1e: e8 f0 e4 60 00 call 0x60e513 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 1a f7 99 f6 call 0xf699f753 39: 49 83 c7 e8 add $0xffffffffffffffe8,%r15 3d: 48 8b 1b mov (%rbx),%rbx --- 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