DF2973[df2973] CONFIRMED: A->tqh_last redirected into B's LIVE entry b1 (0xfffff8008d3631e0)
DF2973[df2973] CONFIRMED: B->tqh_last still points at FREED b2 (0xfffff8008d3631b8) after its removal
panic: Bad tailq NEXT(0xfffff8008db442e0->tqh_last) != NULL, last 0xffffffffffffffff
cpuid = 1
Trace beginning at frame 0xfffff8011835b678
eventhandler_register() at eventhandler_register+0x1f0 0xffffffff806989f0 
eventhandler_register() at eventhandler_register+0x1f0 0xffffffff806989f0 
stage1() at stage1+0x11a 0xffffffff8260012a 
df2973_modevent() at df2973_modevent+0x33 0xffffffff82600283 
module_register_init() at module_register_init+0x49 0xffffffff806232e9 
linker_load_file.part.3() at linker_load_file.part.3+0x1b9 0xffffffff80624619 
Debugger("panic")

CPU1 stopping CPUs: 0x0000003d
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>