device syz3 entered promiscuous mode device syz3 left promiscuous mode divide error: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 11187 Comm: syz-executor7 Not tainted 4.9.43-g7073fca #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801ceb56000 task.stack: ffff8801cde08000 RIP: 0010:[] [] __tcp_select_window+0x432/0x510 net/ipv4/tcp_output.c:2499 RSP: 0018:ffff8801cde0f988 EFLAGS: 00010216 RAX: 0000000000000480 RBX: 0000000000000480 RCX: ffffc90000f3a000 RDX: 0000000000000000 RSI: 0000000000000480 RDI: ffff8801d22d88a5 RBP: ffff8801cde0f9b8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 1ffff10039bc1eea R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d22d8000 FS: 00007f1debf7a700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020936000 CR3: 00000001d60d1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 000000008123b60d ffff8801d22d8000 0000000000000000 ffff8801d22d8130 0000000000000480 ffff8801d22d8000 ffff8801cde0f9e8 ffffffff8321b3be ffff8801d22d8130 0000000000000000 dffffc0000000000 ffff8801d22d8130 Call Trace: [] tcp_cleanup_rbuf+0x43e/0x4f0 net/ipv4/tcp.c:1468 [] tcp_recvmsg+0xd92/0x2810 net/ipv4/tcp.c:1937 [] inet_recvmsg+0x306/0x4c0 net/ipv4/af_inet.c:784 [] sock_recvmsg_nosec net/socket.c:737 [inline] [] sock_recvmsg+0xc9/0x110 net/socket.c:744 [] SYSC_recvfrom+0x1f2/0x320 net/socket.c:1721 [] SyS_recvfrom+0x40/0x50 net/socket.c:1694 [] entry_SYSCALL_64_fastpath+0x23/0xc6 Code: fe 89 d8 44 29 e8 44 39 e0 7d 18 44 39 e3 7c 13 e8 a4 82 10 fe 45 39 f5 0f 84 b5 00 00 00 44 89 e3 eb be e8 91 82 10 fe 89 d8 99 <41> f7 fd 89 c3 41 0f af dd eb ab e8 7e 82 10 fe 44 89 f1 f7 d9 RIP [] __tcp_select_window+0x432/0x510 net/ipv4/tcp_output.c:2499 RSP device syz3 entered promiscuous mode ---[ end trace 48b784d54c534ec8 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..