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Message-ID: <0000000000001fa3ce0617c4d3c1@google.com> Date: Mon, 06 May 2024 01:26:23 -0700 From: syzbot <syzbot+ce5405b9159db688fa37@...kaller.appspotmail.com> To: davem@...emloft.net, edumazet@...gle.com, kernel@...gutronix.de, kuba@...nel.org, linux-can@...r.kernel.org, linux-kernel@...r.kernel.org, mkl@...gutronix.de, netdev@...r.kernel.org, o.rempel@...gutronix.de, pabeni@...hat.com, robin@...tonic.nl, socketcan@...tkopp.net, syzkaller-bugs@...glegroups.com Subject: [syzbot] [can?] WARNING in j1939_xtp_rx_rts (2) Hello, syzbot found the following issue on: HEAD commit: cdc74c9d06e7 Merge branch 'gve-queue-api' git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=17beea2f180000 kernel config: https://syzkaller.appspot.com/x/.config?x=7c70a227bc928e1b dashboard link: https://syzkaller.appspot.com/bug?extid=ce5405b9159db688fa37 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f0df1462721b/disk-cdc74c9d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7e5c38fb35eb/vmlinux-cdc74c9d.xz kernel image: https://storage.googleapis.com/syzbot-assets/8b7652427355/bzImage-cdc74c9d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ce5405b9159db688fa37@...kaller.appspotmail.com vxcan0: j1939_xtp_rx_abort_one: 0xffff888042069c00: 0x00000: (8) Duplicate sequence number (and software is not able to recover) vxcan0: j1939_xtp_rx_abort_one: 0xffff88804206a000: 0x00000: (8) Duplicate sequence number (and software is not able to recover) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11 at net/can/j1939/transport.c:1656 j1939_xtp_rx_rts_session_new net/can/j1939/transport.c:1656 [inline] WARNING: CPU: 1 PID: 11 at net/can/j1939/transport.c:1656 j1939_xtp_rx_rts+0x13db/0x1930 net/can/j1939/transport.c:1735 Modules linked in: CPU: 1 PID: 11 Comm: kworker/u8:1 Not tainted 6.9.0-rc6-syzkaller-01478-gcdc74c9d06e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: krdsd rds_connect_worker RIP: 0010:j1939_xtp_rx_rts_session_new net/can/j1939/transport.c:1656 [inline] RIP: 0010:j1939_xtp_rx_rts+0x13db/0x1930 net/can/j1939/transport.c:1735 Code: e8 7a f6 8a f7 e9 d6 f1 ff ff 89 d9 80 e1 07 38 c1 0f 8c ea f1 ff ff 48 89 df e8 60 f6 8a f7 e9 dd f1 ff ff e8 06 fd 25 f7 90 <0f> 0b 90 e9 6d f2 ff ff 89 f9 80 e1 07 38 c1 0f 8c 51 ee ff ff 48 RSP: 0018:ffffc90000a08640 EFLAGS: 00010246 RAX: ffffffff8a702d7a RBX: 00000000fffffff5 RCX: ffff8880172abc00 RDX: 0000000080000100 RSI: 00000000fffffff5 RDI: 0000000000000000 RBP: ffffc90000a087a8 R08: ffffffff8a702aec R09: 1ffffffff25e80c6 R10: dffffc0000000000 R11: fffffbfff25e80c7 R12: dffffc0000000000 R13: ffff888042fab000 R14: 0000000000000014 R15: 00000000000007c6 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000461144 CR3: 000000007cc42000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> j1939_tp_cmd_recv net/can/j1939/transport.c:2057 [inline] j1939_tp_recv+0xb84/0x1050 net/can/j1939/transport.c:2144 j1939_can_recv+0x732/0xb20 net/can/j1939/main.c:112 deliver net/can/af_can.c:572 [inline] can_rcv_filter+0x359/0x7f0 net/can/af_can.c:606 can_receive+0x327/0x480 net/can/af_can.c:663 can_rcv+0x144/0x260 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5625 [inline] __netif_receive_skb+0x2e0/0x650 net/core/dev.c:5739 process_backlog+0x391/0x7d0 net/core/dev.c:6068 __napi_poll+0xcb/0x490 net/core/dev.c:6722 napi_poll net/core/dev.c:6791 [inline] net_rx_action+0x7bb/0x10a0 net/core/dev.c:6907 __do_softirq+0x2c6/0x980 kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:security_socket_create+0x6e/0xb0 security/security.c:4374 Code: 78 b8 97 fd 48 8b 1b 48 85 db 74 3b 48 8d 6b 18 48 89 e8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 ef e8 56 b8 97 fd 4c 8b 5d 00 <44> 89 ef 44 89 e6 44 89 fa 8b 4c 24 04 41 ff d3 66 90 85 c0 75 10 RSP: 0018:ffffc90000107948 EFLAGS: 00000246 RAX: 1ffffffff1bab1b8 RBX: ffffffff8dd58da8 RCX: ffff8880172abc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffffff8dd58dc0 R08: ffffffff8948d77b R09: 0000000000000001 R10: dffffc0000000000 R11: ffffffff846c8900 R12: 0000000000000001 R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000006 __sock_create+0xc9/0x920 net/socket.c:1526 rds_tcp_conn_path_connect+0x2bb/0xbc0 rds_connect_worker+0x1dd/0x2a0 net/rds/threads.c:176 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3348 worker_thread+0x86d/0xd70 kernel/workqueue.c:3429 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> ---------------- Code disassembly (best guess): 0: 78 b8 js 0xffffffba 2: 97 xchg %eax,%edi 3: fd std 4: 48 8b 1b mov (%rbx),%rbx 7: 48 85 db test %rbx,%rbx a: 74 3b je 0x47 c: 48 8d 6b 18 lea 0x18(%rbx),%rbp 10: 48 89 e8 mov %rbp,%rax 13: 48 c1 e8 03 shr $0x3,%rax 17: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) 1c: 74 08 je 0x26 1e: 48 89 ef mov %rbp,%rdi 21: e8 56 b8 97 fd call 0xfd97b87c 26: 4c 8b 5d 00 mov 0x0(%rbp),%r11 * 2a: 44 89 ef mov %r13d,%edi <-- trapping instruction 2d: 44 89 e6 mov %r12d,%esi 30: 44 89 fa mov %r15d,%edx 33: 8b 4c 24 04 mov 0x4(%rsp),%ecx 37: 41 ff d3 call *%r11 3a: 66 90 xchg %ax,%ax 3c: 85 c0 test %eax,%eax 3e: 75 10 jne 0x50 --- 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@...glegroups.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
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