general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 1 PID: 25008 Comm: vhci_tx Not tainted 5.11.0-rc4-next-20210121-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tomoyo_socket_sendmsg_permission+0x80/0x340 security/tomoyo/network.c:762 Code: c7 40 0c f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 a0 00 00 00 31 c0 e8 cb e1 e9 fd 48 8d 7d 18 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 7d 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c RSP: 0018:ffffc90001eefad0 EFLAGS: 00010206 RAX: 0000000000000003 RBX: 1ffff920003ddf5b RCX: 0000000000000000 RDX: ffff8880149bb800 RSI: ffffffff83893a85 RDI: 0000000000000018 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8595ae76 R10: ffffffff83be010e R11: 0000000000000001 R12: dffffc0000000000 R13: ffffc90001eefce8 R14: ffffc90001eefce8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000015a0004 CR3: 0000000047266000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: security_socket_sendmsg+0x50/0xb0 security/security.c:2156 sock_sendmsg+0x3f/0x120 net/socket.c:669 vhci_send_cmd_submit+0x897/0xf90 drivers/usb/usbip/vhci_tx.c:139 vhci_tx_loop+0xfc/0x370 drivers/usb/usbip/vhci_tx.c:241 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Modules linked in: ---[ end trace 09402d1606e52f2f ]--- RIP: 0010:tomoyo_socket_sendmsg_permission+0x80/0x340 security/tomoyo/network.c:762 Code: c7 40 0c f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 a0 00 00 00 31 c0 e8 cb e1 e9 fd 48 8d 7d 18 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 7d 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c RSP: 0018:ffffc90001eefad0 EFLAGS: 00010206 RAX: 0000000000000003 RBX: 1ffff920003ddf5b RCX: 0000000000000000 RDX: ffff8880149bb800 RSI: ffffffff83893a85 RDI: 0000000000000018 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8595ae76 R10: ffffffff83be010e R11: 0000000000000001 R12: dffffc0000000000 R13: ffffc90001eefce8 R14: ffffc90001eefce8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f47f8fd3b88 CR3: 000000003e0f7000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400