panic: inp_leave_group: imf_sources not empty
cpuid = 0
time = 1560990669
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0020f6c510
vpanic() at vpanic+0x1e0/frame 0xfffffe0020f6c570
panic() at panic+0x43/frame 0xfffffe0020f6c5d0
inp_setmoptions() at inp_setmoptions+0x40bd/frame 0xfffffe0020f6c7b0
ip_ctloutput() at ip_ctloutput+0x7fd/frame 0xfffffe0020f6c800
rip_ctloutput() at rip_ctloutput+0x2c9/frame 0xfffffe0020f6c840
sosetopt() at sosetopt+0x101/frame 0xfffffe0020f6c8c0
kern_setsockopt() at kern_setsockopt+0x158/frame 0xfffffe0020f6c940
sys_setsockopt() at sys_setsockopt+0x33/frame 0xfffffe0020f6c970
ia32_syscall() at ia32_syscall+0x452/frame 0xfffffe0020f6cab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x8143102
KDB: enter: panic
[ thread pid 7896 tid 100216 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why