Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.13.0-rc6-syzkaller-00898-g25cc469d6d34 #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:873 Code: 8d 9e 50 05 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 82 5c f6 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 3b 82 5c f6 4c 8b 1b 4c 89 f7 5b RSP: 0018:ffffc900000d7748 EFLAGS: 00010206 RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff88801cac5a00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888078f11180 RBP: ffff888078f11180 R08: ffff888078f111e7 R09: 1ffff1100f1e223c R10: dffffc0000000000 R11: ffffed100f1e223d R12: dffffc0000000000 R13: ffffffff8ffeb820 R14: ffff888078f11180 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558744f588 CR3: 00000000608fc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virtio_transport_do_close+0x64/0x3d0 net/vmw_vsock/virtio_transport_common.c:1214 virtio_transport_recv_disconnecting net/vmw_vsock/virtio_transport_common.c:1452 [inline] virtio_transport_recv_pkt+0x1755/0x2b10 net/vmw_vsock/virtio_transport_common.c:1661 vsock_loopback_work+0x3e9/0x530 net/vmw_vsock/vsock_loopback.c:133 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:vsock_stream_has_data+0x46/0x70 net/vmw_vsock/af_vsock.c:873 Code: 8d 9e 50 05 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 82 5c f6 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 3b 82 5c f6 4c 8b 1b 4c 89 f7 5b RSP: 0018:ffffc900000d7748 EFLAGS: 00010206 RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff88801cac5a00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888078f11180 RBP: ffff888078f11180 R08: ffff888078f111e7 R09: 1ffff1100f1e223c R10: dffffc0000000000 R11: ffffed100f1e223d R12: dffffc0000000000 R13: ffffffff8ffeb820 R14: ffff888078f11180 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558744f588 CR3: 00000000608fa000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8d 9e 50 05 00 00 lea 0x550(%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 58 82 5c f6 call 0xf65c8274 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 3b 82 5c f6 call 0xf65c8274 39: 4c 8b 1b mov (%rbx),%r11 3c: 4c 89 f7 mov %r14,%rdi 3f: 5b pop %rbx