uvm_fault(0xfffffd80604e2010, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at fifo_write+0x6e: movq 0x8(%rax),%r15 TID PID UID PRFLAGS PFLAGS CPU COMMAND *153259 682 0 0x2 0x1 0K syz-executor 271183 81747 0 0x14000 0x200 1 reaper fifo_write(ffff80002a0d4530) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807ab46ca8,ffff80002a0d45e8,3,fffffd807f7d35b0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffffd960,fffffd807ab46ca8,fffffd807f7d35b0,ffff80002a0d46b0,ffff80002a0d4690) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsysret(ffff8000ffffd960,5b,0,ffff80002a0d4780) at ktrsysret+0x18b sys/kern/kern_ktrace.c:206 syscall(ffff80002a0d4830) at syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] syscall(ffff80002a0d4830) at syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74f843706d10, count: 9 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd80604e2010, 0x8, 0, 1) -> e ddb{0}> trace fifo_write(ffff80002a0d4530) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807ab46ca8,ffff80002a0d45e8,3,fffffd807f7d35b0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffffd960,fffffd807ab46ca8,fffffd807f7d35b0,ffff80002a0d46b0,ffff80002a0d4690) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsysret(ffff8000ffffd960,5b,0,ffff80002a0d4780) at ktrsysret+0x18b sys/kern/kern_ktrace.c:206 syscall(ffff80002a0d4830) at syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] syscall(ffff80002a0d4830) at syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74f843706d10, count: -6 ddb{0}> show registers rdi 0xfffffd807ab46ca8 rsi 0x1 rbp 0xffff80002a0d4520 rbx 0xfffffd807f7d35b0 rdx 0 rcx 0xffff8000ffffd960 rax 0 r8 0xffff80002a0d4690 r9 0 r10 0xcac163d325f580c9 r11 0x7df0097e8d643a19 r12 0x4000 __ALIGN_SIZE+0x3000 r13 0xffff80002a0d45e8 r14 0xffff80002a0d4530 r15 0x1 rip 0xffffffff824bcd5e fifo_write+0x6e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a0d44f0 ss 0x10 fifo_write+0x6e: movq 0x8(%rax),%r15 ddb{0}> show proc PROC (syz-executor) tid=153259 pid=682 tcnt=1 stat=onproc flags process=2 proc=1 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003720e7d0,0xffff80003720e2d0 process=0xffff800037268488 user=0xffff80002a0cf000, vmspace=0xfffffd80604e2010 estcpu=36, cpticks=4, pctcpu=0.3, user=2, sys=10, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 29547 150260 5038 0 2 0 syz-executor 29547 263538 5038 0 3 0x4000080 fsleep syz-executor 68430 358479 66275 0 2 0x2 arp 66275 180412 93907 0 3 0x10008a sigsusp sh 7177 478667 0 0 3 0x14200 acct acct 93907 495530 55369 0 3 0x82 wait syz-executor 66926 110587 55369 0 3 0x82 wait syz-executor 40617 171401 55369 0 3 0x82 wait syz-executor 5038 36950 55369 0 2 0x482 syz-executor 2143 314312 55369 0 3 0x82 wait syz-executor 5637 448816 55369 0 3 0x82 wait syz-executor 10388 12769 55369 0 3 0x82 nanoslp syz-executor * 682 153259 55369 0 7 0x3 syz-executor 68454 189301 0 0 3 0x14280 nfsidl nfsio 73826 43950 0 0 3 0x14280 nfsidl nfsio 63982 115953 0 0 3 0x14280 nfsidl nfsio 44618 173024 0 0 3 0x14280 nfsidl nfsio 94553 169758 0 0 3 0x14280 nfsidl nfsio 3481 353829 0 0 3 0x14280 nfsidl nfsio 24642 256260 0 0 3 0x14280 nfsidl nfsio 23655 40431 0 0 3 0x14280 nfsidl nfsio 30350 433810 0 0 3 0x14280 nfsidl nfsio 93798 157318 0 0 3 0x14280 nfsidl nfsio 39073 197323 0 0 3 0x14280 nfsidl nfsio 90819 462626 0 0 3 0x14280 nfsidl nfsio 81109 225708 0 0 3 0x14280 nfsidl nfsio 91191 260089 0 0 3 0x14280 nfsidl nfsio 2280 137845 0 0 3 0x14280 nfsidl nfsio 45537 61093 0 0 3 0x14280 nfsidl nfsio 74745 511824 0 0 3 0x14280 nfsidl nfsio 16114 402120 0 0 3 0x14280 nfsidl nfsio 44151 338753 0 0 3 0x14280 nfsidl nfsio 74043 317184 0 0 3 0x14280 nfsidl nfsio 6539 88214 0 0 3 0x14200 bored sosplice 55369 400241 6985 0 2 0x2 syz-executor 6985 449296 20196 0 3 0x10008a sigsusp ksh 20196 133340 78920 0 3 0x98 kqread sshd-session 78920 135648 12729 0 3 0x92 kqread sshd-session 90179 300829 1 0 3 0x100083 ttyin getty 12729 506981 1 0 3 0x88 kqread sshd 50998 266070 58093 74 3 0x1100092 bpf pflogd 58093 149893 1 0 3 0x80 sbwait pflogd 74222 195066 9344 73 3 0x1100090 kqread syslogd 9344 272894 1 0 3 0x100082 sbwait syslogd 58761 349592 1 0 3 0x100080 kqread resolvd 91506 135264 88930 77 3 0x100092 kqread dhcpleased 13761 247540 88930 77 3 0x100092 kqread dhcpleased 88930 21782 1 0 3 0x80 kqread dhcpleased 137 27570 0 0 3 0x14200 bored smr 33537 496769 0 0 3 0x14200 pgzero zerothread 248 68121 0 0 3 0x14200 aiodoned aiodoned 99855 205609 0 0 3 0x14200 syncer update 88322 174128 0 0 3 0x14200 cleaner cleaner 81747 271183 0 0 7 0x14200 reaper 36970 373604 0 0 3 0x14200 pgdaemon pagedaemon 31454 368000 0 0 3 0x14200 bored viomb 75076 355347 0 0 3 0x40014200 acpi0 acpi0 87391 10520 0 0 3 0x40014200 idle1 27971 138879 0 0 3 0x14200 bored softnet3 59700 184236 0 0 3 0x14200 bored softnet2 55296 208205 0 0 3 0x14200 bored softnet1 20148 482185 0 0 3 0x14200 bored softnet0 25013 306833 0 0 3 0x14200 bored systqmp 66860 73421 0 0 3 0x14200 bored systq 53206 261590 0 0 3 0x14200 tmoslp softclockmp 95278 124877 0 0 3 0x40014200 tmoslp softclock 82841 147348 0 0 3 0x40014200 idle0 1 341421 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd800810da58) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_remove_ptes+0x297 sys/arch/amd64/amd64/pmap.c:1706 #4 pmap_do_remove+0x533 sys/arch/amd64/amd64/pmap.c:1915 #5 uvm_unmap_kill_entry_withlock+0x274 sys/uvm/uvm_map.c:1865 #6 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #7 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #8 reaper+0x246 sys/kern/kern_exit.c:481 #9 proc_trampoline+0x10 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bddf8d8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_do_remove+0xa9 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_do_remove+0xa9 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:432 [inline] #3 pmap_do_remove+0xa9 sys/arch/amd64/amd64/pmap.c:1819 #4 uvm_unmap_kill_entry_withlock+0x274 sys/uvm/uvm_map.c:1865 #5 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #6 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #7 reaper+0x246 sys/kern/kern_exit.c:481 #8 proc_trampoline+0x10 Process 682 (syz-executor) thread 0xffff8000ffffd960 (153259) exclusive rrwlock inode r = 0 (0xfffffd806fdfdc50) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ktrwriteraw+0x172 sys/kern/kern_ktrace.c:679 #7 ktrsysret+0x18b sys/kern/kern_ktrace.c:206 #8 syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] #8 syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83631230) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 syscall+0xa11 mi_syscall_return sys/sys/syscall_mi.h:207 [inline] #1 syscall+0xa11 sys/arch/amd64/amd64/trap.c:598 #2 Xsyscall+0x128 Process 81747 (reaper) thread 0xffff800029fd91c0 (271183) exclusive rwlock vmmaplk r = 0 (0xfffffd80697ed7d8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvm_map_teardown+0x5e sys/uvm/uvm_map.c:2466 #4 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #5 reaper+0x246 sys/kern/kern_exit.c:481 #6 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10202 10176K 10426K 166960K 11921 0 pcb 17 14K 15K 166960K 155 0 rtable 213 15K 15K 166960K 1341 0 pf 37 18K 25K 166960K 141 0 ifaddr 42 7K 8K 166960K 185 0 ifgroup 59 2K 2K 166960K 209 0 sysctl 3 0K 0K 166960K 3 0 counters 66 36K 37K 166960K 144 0 ioctlops 0 0K 4K 166960K 1591 0 iov 0 0K 24K 166960K 34 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1471 92K 93K 166960K 2375 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 30 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 93K 166960K 1133 0 sigio 0 0K 0K 166960K 79 0 proc 70 91K 152K 166960K 1462 0 subproc 104 6K 7K 166960K 520 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 46 0 in_multi 90 6K 7K 166960K 452 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 925 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 249 73K 100K 166960K 10254 0 UVM aobj 10 2K 2K 166960K 11 0 pinsyscall 42 84K 104K 166960K 3029 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 20 0 NDP 13 0K 2K 166960K 130 0 temp 75 6824K 6952K 166960K 29505 0 kqueue 14 22K 28K 166960K 113 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 140 0 137 1 0 1 1 0 8 0 rtentry 112 467 0 372 4 0 4 4 0 8 0 unpcb 144 721 0 700 13 7 6 6 0 8 5 syncache 336 6 0 6 2 2 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 196 0 192 6 5 1 5 0 8 0 arp 120 84 0 66 1 0 1 1 0 8 0 inpcb 336 878 0 870 16 14 2 7 0 8 1 nd6 136 121 0 98 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 40 0 32 1 0 1 1 0 8 0 ppxss 1168 3 0 3 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 8 0 6 1 0 1 1 0 482 0 pffrnode 88 7 0 5 1 0 1 1 0 8 0 pffrent 40 52 0 50 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 98 0 69 1 0 1 1 0 8 0 pfstkey 128 102 0 73 2 0 2 2 0 8 0 pfstate 376 100 0 71 4 1 3 4 0 8 0 pfrule 1344 30 0 22 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1876 0 1470 44 14 30 30 0 8 1 art_table 32 1878 0 1470 4 0 4 4 0 8 0 art_node 16 466 0 381 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 37 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 25 0 15 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2597 0 1029 99 0 99 99 0 8 0 ffsino 272 2597 0 1029 105 0 105 105 0 8 0 nchpl 144 3560 0 1830 66 1 65 65 0 8 0 uvmvnodes 80 3519 0 0 72 0 72 72 0 8 0 vnodes 216 3519 0 0 196 0 196 196 0 8 0 namei 1024 15153 0 15153 3 2 1 1 0 8 1 percpumem 16 86 0 39 1 0 1 1 0 8 0 kstatmem 264 104 0 78 3 0 3 3 0 8 1 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 21584 0 21584 11 9 2 8 1 8 2 plimitpl 152 186 0 168 1 0 1 1 0 8 0 sigapl 424 1392 0 1319 10 1 9 9 0 8 0 futexpl 64 7855 0 7854 6 5 1 1 0 8 0 knotepl 120 442 0 0 11 0 11 11 0 8 0 kqueuepl 216 187 0 177 2 0 2 2 0 8 1 pipepl 320 317 0 290 8 5 3 8 0 8 0 fdescpl 496 1350 0 1319 7 2 5 5 0 8 0 filepl 152 6956 0 6696 28 12 16 18 0 8 5 lockfpl 104 393 0 389 3 0 3 3 0 8 2 lockfspl 48 124 0 120 1 0 1 1 0 8 0 sessionpl 144 55 0 46 1 0 1 1 0 8 0 pgrppl 48 98 0 81 1 0 1 1 0 8 0 ucredpl 104 739 0 725 1 0 1 1 0 8 0 zombiepl 144 1325 0 1319 1 0 1 1 0 8 0 processpl 1160 1392 0 1319 6 0 6 6 0 8 0 procpl 648 2321 0 2246 9 1 8 8 0 8 0 srpgc 96 10 0 10 3 2 1 1 0 8 1 sosppl 168 2 0 2 2 2 0 1 0 8 0 sockpl 664 1744 0 1712 35 24 11 14 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 249 0 0 32 1 31 32 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 753 0 0 47 0 47 47 0 8 0 bufpl 280 6921 0 749 441 0 441 441 0 8 0 anonpl 24 226157 0 222151 82 29 53 66 0 185 12 amapchunkpl 152 32101 0 31560 53 19 34 34 0 158 11 amappl16 200 4205 0 4179 32 22 10 17 0 8 8 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 173 0 161 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 2495 0 2462 4 1 3 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 131 0 131 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 172 0 160 1 0 1 1 0 8 0 amappl6 120 482 0 480 1 0 1 1 0 8 0 amappl5 112 265 0 254 1 0 1 1 0 8 0 amappl4 104 419 0 399 1 0 1 1 0 8 0 amappl3 96 5812 0 5708 3 0 3 3 0 8 0 amappl2 88 1634 0 1551 2 0 2 2 0 8 0 amappl1 80 12870 0 12274 16 2 14 15 0 8 0 amappl 88 9639 0 9455 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1350 0 1318 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1350 0 1318 1 0 1 1 0 8 0 vmmpekpl 168 12982 0 12933 5 1 4 4 0 8 0 vmmpepl 168 88846 0 86906 121 26 95 99 0 357 7 vmsppl 440 1349 0 1317 7 3 4 5 0 8 0 rwobjpl 56 30809 0 26305 65 1 64 64 0 8 0 pdppl 4096 2707 0 2634 159 86 73 85 0 8 0 pvpl 32 31086 0 0 252 1 251 251 0 265 0 pmappl 248 1349 0 1317 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 527 0 128 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace fifo_write(ffff80002a0d4530) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807ab46ca8,ffff80002a0d45e8,3,fffffd807f7d35b0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffffd960,fffffd807ab46ca8,fffffd807f7d35b0,ffff80002a0d46b0,ffff80002a0d4690) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsysret(ffff8000ffffd960,5b,0,ffff80002a0d4780) at ktrsysret+0x18b sys/kern/kern_ktrace.c:206 syscall(ffff80002a0d4830) at syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] syscall(ffff80002a0d4830) at syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74f843706d10, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83631028) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83631028) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvn_detach(fffffd806cf18890) at uvn_detach+0x28 sys/uvm/uvm_vnode.c:310 uvm_unmap_detach(ffff800029fe5e00,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd80697ed6e8) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd80697ed6e8) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd91c0) at reaper+0x246 sys/kern/kern_exit.c:481 end trace frame: 0x0, count: 6 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83631028) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83631028) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvn_detach(fffffd806cf18890) at uvn_detach+0x28 sys/uvm/uvm_vnode.c:310 uvm_unmap_detach(ffff800029fe5e00,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd80697ed6e8) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd80697ed6e8) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd91c0) at reaper+0x246 sys/kern/kern_exit.c:481 end trace frame: 0x0, count: -9