panic: acquiring blockable sleep lock with spinlock or critical section held (sx) vm map (user) @ /usr/src/sys/vm/vm_map.c:4737 cpuid = 0 time = 25201 KDB: enter: panic [ thread pid 1920 tid 100100 ] Stopped at kdb_enter+0x74: addi r3, r0, 0x0 db> bt Tracing pid 1920 tid 100100 td 0xcf7c7ae0 0xcf8134e0: at vpanic+0x18c 0xcf813520: at panic+0x64 0xcf813560: at witness_checkorder+0xbcc 0xcf8135c0: at _sx_slock_int+0xa0 0xcf8135f0: at _sx_slock+0x28 0xcf813600: at vm_map_lookup+0xec 0xcf813690: at vm_fault+0x148 0xcf813780: at vm_fault_trap+0xa8 0xcf8137c0: at trap+0x788 0xcf813860: at powerpc_interrupt+0x190 0xcf813890: kernel DSI write trap @ 0x4 by memset+0x3c: srr1=0x21000 r1=0xcf813950 cr=0x42000840 xer=0 ctr=0x7f sr=0x800000 frame=0xcf813898 0xcf813950: at 0x3fc 0xcf813980: at pmap_activate+0x80 0xcf8139a0: at cpu_switch+0xac 0xcf8139f0: at mi_switch+0x210 0xcf813a10: at ast+0x2b4 0xcf813a40: user SC trap by 0x4182a868: srr1=0x202d000 r1=0x7fffc2e0 cr=0x244c0400 xer=0 ctr=0 frame=0xcf813a48 db>