vcan0: j1939_tp_rxtimer: 0x00000000ee932e78: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0x00000000ee932e78: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16 at net/can/j1939/socket.c:180 j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:180 [inline] WARNING: CPU: 1 PID: 16 at net/can/j1939/socket.c:180 j1939_sk_queue_activate_next+0x359/0x460 net/can/j1939/socket.c:204 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-next-20191206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:180 [inline] RIP: 0010:j1939_sk_queue_activate_next+0x359/0x460 net/can/j1939/socket.c:204 Code: e8 1c 83 c0 0a 89 45 cc eb 9f 48 c7 c7 94 da 80 8a e8 db 20 c0 fa e9 6a fd ff ff e8 d1 20 c0 fa e9 19 fe ff ff e8 e7 7d 82 fa <0f> 0b 48 8b 45 c0 48 8d b8 b0 00 00 00 48 89 f8 48 c1 e8 03 42 0f RSP: 0018:ffffc90000d7f910 EFLAGS: 00010206 RAX: ffff8880a9a44440 RBX: ffff88809f98c000 RCX: ffffffff86f27688 RDX: 0000000000000100 RSI: ffffffff86f27729 RDI: 0000000000000005 RBP: ffffc90000d7f968 R08: ffff8880a9a44440 R09: fffffbfff16597b4 R10: fffffbfff16597b3 R11: ffffffff8b2cbd9f R12: ffff88809f98c510 R13: ffff88809e95f400 R14: ffff88809f98c548 R15: dffffc0000000000 j1939_session_deactivate_activate_next+0x3d/0x50 net/can/j1939/transport.c:1046 j1939_xtp_rx_abort_one.cold+0x21a/0x35e net/can/j1939/transport.c:1275 j1939_xtp_rx_abort net/can/j1939/transport.c:1286 [inline] j1939_tp_cmd_recv net/can/j1939/transport.c:1972 [inline] j1939_tp_recv+0x783/0x9b0 net/can/j1939/transport.c:2005 j1939_can_recv+0x5cb/0x740 net/can/j1939/main.c:101 deliver net/can/af_can.c:569 [inline] can_rcv_filter+0x292/0x8e0 net/can/af_can.c:603 can_receive+0x2e7/0x530 net/can/af_can.c:660 can_rcv+0x133/0x1b0 net/can/af_can.c:686 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:5150 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5264 process_backlog+0x206/0x750 net/core/dev.c:6095 napi_poll net/core/dev.c:6532 [inline] net_rx_action+0x508/0x1120 net/core/dev.c:6600 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16 at kernel/locking/mutex.c:1419 mutex_trylock+0x279/0x2f0 kernel/locking/mutex.c:1427 Modules linked in: CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-next-20191206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mutex_trylock+0x279/0x2f0 kernel/locking/mutex.c:1419 Code: c9 41 b8 01 00 00 00 31 c9 ba 01 00 00 00 31 f6 e8 0c 96 92 f9 58 48 8d 65 d8 b8 01 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b e9 0c fe ff ff 48 c7 c7 e0 94 63 8b 48 89 4d d0 e8 e0 54 ea RSP: 0018:ffffc90000d7f4d8 EFLAGS: 00010006 RAX: 0000000080000302 RBX: 1ffff920001afea3 RCX: 0000000000000004 RDX: 0000000000000100 RSI: ffffffff816be5a5 RDI: ffffffff899cdac0 RBP: ffffc90000d7f508 R08: 0000000000000001 R09: fffffbfff1334c15 R10: fffffbfff1334c14 R11: ffffffff899a60a3 R12: ffffffff8b6394e0 R13: 0000000000000000 R14: ffffffff86f27700 R15: ffffffff899cdac0 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c7d28 CR3: 000000000986d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __crash_kexec+0x91/0x200 kernel/kexec_core.c:948 panic+0x308/0x75c kernel/panic.c:241 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:180 [inline] RIP: 0010:j1939_sk_queue_activate_next+0x359/0x460 net/can/j1939/socket.c:204 Code: e8 1c 83 c0 0a 89 45 cc eb 9f 48 c7 c7 94 da 80 8a e8 db 20 c0 fa e9 6a fd ff ff e8 d1 20 c0 fa e9 19 fe ff ff e8 e7 7d 82 fa <0f> 0b 48 8b 45 c0 48 8d b8 b0 00 00 00 48 89 f8 48 c1 e8 03 42 0f RSP: 0018:ffffc90000d7f910 EFLAGS: 00010206 RAX: ffff8880a9a44440 RBX: ffff88809f98c000 RCX: ffffffff86f27688 RDX: 0000000000000100 RSI: ffffffff86f27729 RDI: 0000000000000005 RBP: ffffc90000d7f968 R08: ffff8880a9a44440 R09: fffffbfff16597b4 R10: fffffbfff16597b3 R11: ffffffff8b2cbd9f R12: ffff88809f98c510 R13: ffff88809e95f400 R14: ffff88809f98c548 R15: dffffc0000000000 j1939_session_deactivate_activate_next+0x3d/0x50 net/can/j1939/transport.c:1046 j1939_xtp_rx_abort_one.cold+0x21a/0x35e net/can/j1939/transport.c:1275 j1939_xtp_rx_abort net/can/j1939/transport.c:1286 [inline] j1939_tp_cmd_recv net/can/j1939/transport.c:1972 [inline] j1939_tp_recv+0x783/0x9b0 net/can/j1939/transport.c:2005 j1939_can_recv+0x5cb/0x740 net/can/j1939/main.c:101 deliver net/can/af_can.c:569 [inline] can_rcv_filter+0x292/0x8e0 net/can/af_can.c:603 can_receive+0x2e7/0x530 net/can/af_can.c:660 can_rcv+0x133/0x1b0 net/can/af_can.c:686 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:5150 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5264 process_backlog+0x206/0x750 net/core/dev.c:6095 napi_poll net/core/dev.c:6532 [inline] net_rx_action+0x508/0x1120 net/core/dev.c:6600 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 irq event stamp: 500735 hardirqs last enabled at (500734): [] __local_bh_enable_ip+0x15a/0x270 kernel/softirq.c:194 hardirqs last disabled at (500735): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (500694): [] __do_softirq+0x6cd/0x98c kernel/softirq.c:319 softirqs last disabled at (500699): [] run_ksoftirqd kernel/softirq.c:603 [inline] softirqs last disabled at (500699): [] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 ---[ end trace ae5eb02a9f87764b ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16 at kernel/locking/mutex.c:737 mutex_unlock+0x1d/0x30 kernel/locking/mutex.c:744 Modules linked in: CPU: 1 PID: 16 Comm: ksoftirqd/1 Tainted: G W 5.4.0-next-20191206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mutex_unlock+0x1d/0x30 kernel/locking/mutex.c:737 Code: 4c 89 ff e8 35 60 ea f9 e9 8c fb ff ff 55 65 8b 05 a0 e6 39 78 a9 00 ff 1f 00 48 89 e5 75 0b 48 8b 75 08 e8 45 f9 ff ff 5d c3 <0f> 0b 48 8b 75 08 e8 38 f9 ff ff 5d c3 66 0f 1f 44 00 00 48 b8 00 RSP: 0018:ffffc90000d7f508 EFLAGS: 00010006 RAX: 0000000080000302 RBX: 1ffff920001afea3 RCX: ffffffff816be5bd RDX: 0000000000000100 RSI: ffffffff816be61f RDI: ffffffff899cdac0 RBP: ffffc90000d7f508 R08: ffff8880a9a44440 R09: fffffbfff16597b3 R10: ffff8880a9a44d58 R11: ffff8880a9a44440 R12: 0000000000000001 R13: 0000000000000000 R14: ffffffff86f27700 R15: 00000000000000b4 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c7d28 CR3: 000000000986d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __crash_kexec+0x10b/0x200 kernel/kexec_core.c:957 panic+0x308/0x75c kernel/panic.c:241 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:180 [inline] RIP: 0010:j1939_sk_queue_activate_next+0x359/0x460 net/can/j1939/socket.c:204 Code: e8 1c 83 c0 0a 89 45 cc eb 9f 48 c7 c7 94 da 80 8a e8 db 20 c0 fa e9 6a fd ff ff e8 d1 20 c0 fa e9 19 fe ff ff e8 e7 7d 82 fa <0f> 0b 48 8b 45 c0 48 8d b8 b0 00 00 00 48 89 f8 48 c1 e8 03 42 0f RSP: 0018:ffffc90000d7f910 EFLAGS: 00010206 RAX: ffff8880a9a44440 RBX: ffff88809f98c000 RCX: ffffffff86f27688 RDX: 0000000000000100 RSI: ffffffff86f27729 RDI: 0000000000000005 RBP: ffffc90000d7f968 R08: ffff8880a9a44440 R09: fffffbfff16597b4 R10: fffffbfff16597b3 R11: ffffffff8b2cbd9f R12: ffff88809f98c510 R13: ffff88809e95f400 R14: ffff88809f98c548 R15: dffffc0000000000 j1939_session_deactivate_activate_next+0x3d/0x50 net/can/j1939/transport.c:1046 j1939_xtp_rx_abort_one.cold+0x21a/0x35e net/can/j1939/transport.c:1275 j1939_xtp_rx_abort net/can/j1939/transport.c:1286 [inline] j1939_tp_cmd_recv net/can/j1939/transport.c:1972 [inline] j1939_tp_recv+0x783/0x9b0 net/can/j1939/transport.c:2005 j1939_can_recv+0x5cb/0x740 net/can/j1939/main.c:101 deliver net/can/af_can.c:569 [inline] can_rcv_filter+0x292/0x8e0 net/can/af_can.c:603 can_receive+0x2e7/0x530 net/can/af_can.c:660 can_rcv+0x133/0x1b0 net/can/af_can.c:686 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:5150 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5264 process_backlog+0x206/0x750 net/core/dev.c:6095 napi_poll net/core/dev.c:6532 [inline] net_rx_action+0x508/0x1120 net/core/dev.c:6600 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 irq event stamp: 500735 hardirqs last enabled at (500734): [] __local_bh_enable_ip+0x15a/0x270 kernel/softirq.c:194 hardirqs last disabled at (500735): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (500694): [] __do_softirq+0x6cd/0x98c kernel/softirq.c:319 softirqs last disabled at (500699): [] run_ksoftirqd kernel/softirq.c:603 [inline] softirqs last disabled at (500699): [] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 ---[ end trace ae5eb02a9f87764c ]--- Kernel Offset: disabled Rebooting in 86400 seconds..