general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] CPU: 0 PID: 6 Comm: kworker/0:0 Not tainted 5.15.173-syzkaller-1077948-gb4bd207b0380 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: vsock-loopback vsock_loopback_work RIP: 0010:vsock_stream_has_data+0x46/0x70 net/vmw_vsock/af_vsock.c:859 Code: 8d 9e 68 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 78 92 d5 fc 48 8b 1b 48 83 c3 60 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 5b 92 d5 fc 4c 89 f7 ff 13 5b 41 RSP: 0018:ffffc900000675b8 EFLAGS: 00010206 RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff888100253b40 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881123d8640 RBP: ffffc900000675d0 R08: dffffc0000000000 R09: ffffed102247b0d5 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff8881123d8640 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005571df501038 CR3: 000000011f42a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virtio_transport_do_close+0x67/0x3e0 net/vmw_vsock/virtio_transport_common.c:913 virtio_transport_recv_disconnecting net/vmw_vsock/virtio_transport_common.c:1141 [inline] virtio_transport_recv_pkt+0x1322/0x4160 net/vmw_vsock/virtio_transport_common.c:1333 vsock_loopback_work+0x37d/0x3f0 net/vmw_vsock/vsock_loopback.c:137 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Modules linked in: ---[ end trace 4b62947158fa12fe ]--- RIP: 0010:vsock_stream_has_data+0x46/0x70 net/vmw_vsock/af_vsock.c:859 Code: 8d 9e 68 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 78 92 d5 fc 48 8b 1b 48 83 c3 60 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 5b 92 d5 fc 4c 89 f7 ff 13 5b 41 RSP: 0018:ffffc900000675b8 EFLAGS: 00010206 RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff888100253b40 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881123d8640 RBP: ffffc900000675d0 R08: dffffc0000000000 R09: ffffed102247b0d5 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff8881123d8640 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc607cc0e8 CR3: 0000000120496000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8d 9e 68 03 00 00 lea 0x368(%rsi),%ebx 6: 48 89 d8 mov %rbx,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 78 92 d5 fc call 0xfcd59294 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 60 add $0x60,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 5b 92 d5 fc call 0xfcd59294 39: 4c 89 f7 mov %r14,%rdi 3c: ff 13 call *(%rbx) 3e: 5b pop %rbx 3f: 41 rex.B