a similar panic. looks like i am off to memtest86
savecore: reboot after panic: pool_do_get: mcl2k free list modified: page 0xd8af7000; item addr 0xd8af7800; offset 0x0=0x80 != 0x416a2108 savecore: writing core to /var/crash/bsd.1.core savecore: writing kernel to /var/crash/bsd.1 (gdb) file /var/crash/bsd.1 Reading symbols from /var/crash/bsd.1...(no debugging symbols found)...done. (gdb) target kvm /var/crash/bsd.1.core #0 0xd0557603 in boot () (gdb) where #0 0xd0557603 in boot () #1 0xd03bbba6 in reboot () #2 0xd037cdd2 in db_boot_dump_cmd () #3 0xd037d4a4 in db_command () #4 0xd037d6ec in db_command_loop () #5 0xd03818da in db_trap () #6 0xd0553c1b in kdb_trap () #7 0xd05643b7 in trap () #8 0xd0200b31 in alltraps () #9 0xd0553937 in Debugger () #10 0xd03ca2c1 in panic () #11 0xd03ccd12 in assertwaitok () #12 0xd039fa53 in bufq_wait () #13 0xd03e99dd in bwrite () #14 0xd03f8bd4 in VOP_BWRITE () #15 0xd03ec8be in cluster_wbuild () #16 0xd03ece08 in cluster_write () #17 0xd04d69c7 in ffs_write () #18 0xd03f8282 in VOP_WRITE () #19 0xd0514504 in uvn_io () #20 0xd05146de in uvn_put () #21 0xd050b204 in uvm_pager_put () #22 0xd051505e in uvn_flush () #23 0xd0515745 in uvm_vnp_sync () #24 0xd03f73b5 in sys_sync () #25 0xd03f08c2 in vfs_syncwait () #26 0xd03f22f9 in vfs_shutdown () #27 0xd0557617 in boot () #28 0xd03bbba6 in reboot () #29 0xd037cdd2 in db_boot_dump_cmd () #30 0xd037d4a4 in db_command () #31 0xd037d6ec in db_command_loop () #32 0xd03818da in db_trap () #33 0xd0553c1b in kdb_trap () #34 0xd05643b7 in trap () #35 0xd0200b31 in alltraps () #36 0xd0553937 in Debugger () #37 0xd03ca2c1 in panic () #38 0xd03ccd12 in assertwaitok () #39 0xd03a950d in malloc () #40 0xd0744814 in intel_crtc_mode_get () #41 0xd0714897 in drm_fb_helper_restore_fbdev_mode () #42 0xd074a2fe in intel_fb_restore_mode () #43 0xd07213e7 in inteldrm_doswitch () #44 0xd0721492 in inteldrm_show_screen () #45 0xd0824764 in wsdisplay_switchtoconsole () #46 0xd0553b24 in kdb_trap () #47 0xd05643b7 in trap () #48 0xd0200b31 in alltraps () #49 0xd0553937 in Debugger () #50 0xd03ca2c1 in panic () #51 0xd03c7a4f in pool_do_get () #52 0xd03c733f in pool_get () #53 0xd03debb1 in m_clget () #54 0xd03e3bb9 in sosend () #55 0xd03d0f6b in soo_write () #56 0xd03ce564 in dofilewritev () #57 0xd03ce76c in sys_writev () #58 0xd0563dd4 in syscall () #59 0xd0200bf3 in Xsyscall () #60 0xf5e75fa8 in ?? () #61 0x2685005b in ?? () #62 0x23070063 in ?? () #63 0x0f6d0033 in ?? () #64 0xcfbf0033 in ?? () #65 0x23073500 in ?? () #66 0x00000001 in ?? () #67 0xcfbf2ec8 in ?? () #68 0x23072250 in ?? () #69 0x23073500 in ?? () #70 0x00000003 in ?? () #71 0x00000079 in ?? () #72 0x00000003 in ?? () #73 0x00000002 in ?? () #74 0x02aaa9fd in ?? () #75 0x0000002b in ?? () #76 0x00200282 in ?? () #77 0xcfbf2e9c in ?? () #78 0x00000033 in ?? () #79 0x00000000 in ?? () -f -- new members urgently required for suicide club.