pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) device lo entered promiscuous mode device lo left promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11806 at net/core/sock_reuseport.c:41 reuseport_alloc+0x223/0x290 net/core/sock_reuseport.c:39 multiple allocations for the same socket Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 11806 Comm: syz-executor3 Not tainted 4.9.60-gdfe0a9b #81 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d86b7a88 ffffffff81d91389 ffffffff83a46ba0 ffff8801d86b7b60 ffffffff83ee8a00 ffffffff82f94533 0000000000000009 ffff8801d86b7b50 ffffffff8142e391 0000000041b58ab3 ffffffff84185bc8 ffffffff8142e1d5 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bc/0x3a8 kernel/panic.c:179 [] __warn+0x1c4/0x1e0 kernel/panic.c:542 [] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565 [] reuseport_alloc+0x223/0x290 net/core/sock_reuseport.c:39 [] __reuseport_attach_prog net/core/filter.c:1212 [inline] [] sk_reuseport_attach_filter+0x1c1/0x2a0 net/core/filter.c:1300 [] sock_setsockopt+0x5f7/0x18e0 net/core/sock.c:912 [] SYSC_setsockopt net/socket.c:1767 [inline] [] SyS_setsockopt+0x216/0x250 net/socket.c:1750 [] entry_SYSCALL_64_fastpath+0x23/0xc6 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..