panic: missing alias Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *410813 85387 0 0x2 0 1K syz-executor.3 282795 28602 0 0x2 0 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82487574) at panic+0x177 sys/kern/subr_prf.c:202 vgonel(fffffd80714c2ac8,ffff800021236000) at vgonel+0x4f8 sys/kern/vfs_subr.c:1175 vrecycle(fffffd80714c2ac8,ffff800021236000) at vrecycle+0x54 sys/kern/vfs_subr.c:1102 ufs_inactive(ffff8000246de6e8) at ufs_inactive+0x2ae sys/ufs/ufs/ufs_inode.c:122 VOP_INACTIVE(fffffd80714c2ac8,ffff800021236000) at VOP_INACTIVE+0xc4 sys/kern/vfs_vops.c:505 vput(fffffd80714c2ac8) at vput+0xb6 sys/kern/vfs_subr.c:779 ufs_remove(ffff8000246de7e8) at ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618 VOP_REMOVE(fffffd80714c2828,fffffd80714c2ac8,ffff8000246de8c8) at VOP_REMOVE+0x118 sys/kern/vfs_vops.c:349 dounlinkat(ffff800021236000,ffffff9c,7f7ffffd5b90,0) at dounlinkat+0x10c sys/kern/vfs_syscalls.c:1885 syscall(ffff8000246dea40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000246dea40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6040, count: 3 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: missing alias ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82487574) at panic+0x177 sys/kern/subr_prf.c:202 vgonel(fffffd80714c2ac8,ffff800021236000) at vgonel+0x4f8 sys/kern/vfs_subr.c:1175 vrecycle(fffffd80714c2ac8,ffff800021236000) at vrecycle+0x54 sys/kern/vfs_subr.c:1102 ufs_inactive(ffff8000246de6e8) at ufs_inactive+0x2ae sys/ufs/ufs/ufs_inode.c:122 VOP_INACTIVE(fffffd80714c2ac8,ffff800021236000) at VOP_INACTIVE+0xc4 sys/kern/vfs_vops.c:505 vput(fffffd80714c2ac8) at vput+0xb6 sys/kern/vfs_subr.c:779 ufs_remove(ffff8000246de7e8) at ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618 VOP_REMOVE(fffffd80714c2828,fffffd80714c2ac8,ffff8000246de8c8) at VOP_REMOVE+0x118 sys/kern/vfs_vops.c:349 dounlinkat(ffff800021236000,ffffff9c,7f7ffffd5b90,0) at dounlinkat+0x10c sys/kern/vfs_syscalls.c:1885 syscall(ffff8000246dea40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000246dea40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6040, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000246de510 rbx 0xffff800020d39bff rdx 0 rcx 0 rax 0xffff800021236000 r8 0x101010101010101 r9 0x8080808080808080 r10 0xbe94d4bacf6a1a04 r11 0x40fb147f3c453caf r12 0xffff800020d39a00 r13 0 r14 0 r15 0x1 rip 0xffffffff8167b298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000246de500 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=410813 stat=onproc flags process=2 proc=0 pri=17, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800021236540,0xffff8000ffff4018 process=0xffff8000211f2dc8 user=0xffff8000246d9000, vmspace=0xfffffd806ee0de68 estcpu=36, cpticks=1, pctcpu=0.13 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 18256 460318 46347 0 2 0 syz-executor.2 18256 334752 46347 0 3 0x4000080 poll syz-executor.2 54709 178075 0 0 3 0x14200 bored sosplice *85387 410813 97042 0 7 0x2 syz-executor.3 46347 234800 97042 0 3 0x82 nanoslp syz-executor.2 93793 107294 97042 0 2 0x2 syz-executor.1 28602 282795 97042 0 7 0x2 syz-executor.0 97042 252364 79816 0 3 0x82 thrsleep syz-fuzzer 97042 110443 79816 0 3 0x4000082 nanoslp syz-fuzzer 97042 126745 79816 0 3 0x4000082 kqread syz-fuzzer 97042 20954 79816 0 3 0x4000082 thrsleep syz-fuzzer 97042 281671 79816 0 3 0x4000082 thrsleep syz-fuzzer 97042 100917 79816 0 3 0x4000082 thrsleep syz-fuzzer 97042 190027 79816 0 3 0x4000082 thrsleep syz-fuzzer 97042 364632 79816 0 3 0x4000082 thrsleep syz-fuzzer 79816 26514 34133 0 3 0x10008a sigsusp ksh 34133 282830 18996 0 3 0x9a poll sshd 13516 337910 1 0 3 0x100083 ttyin getty 18996 392658 1 0 3 0x88 poll sshd 51851 117007 52918 74 3 0x100092 bpf pflogd 52918 178183 1 0 3 0x80 netio pflogd 58405 303887 22956 73 3 0x100090 kqread syslogd 22956 459659 1 0 3 0x100082 netio syslogd 2346 190258 1 0 3 0x100080 kqread resolvd 46356 509306 43447 77 3 0x100092 kqread dhcpleased 38986 31576 43447 77 3 0x100092 kqread dhcpleased 43447 436003 1 0 3 0x80 kqread dhcpleased 58770 478871 0 0 3 0x14200 bored smr 59749 71198 0 0 2 0x14200 zerothread 99756 126281 0 0 3 0x14200 aiodoned aiodoned 50006 122357 0 0 3 0x14200 syncer update 1829 117986 0 0 3 0x14200 cleaner cleaner 79711 519017 0 0 3 0x14200 reaper reaper 80353 43662 0 0 3 0x14200 pgdaemon pagedaemon 31001 284905 0 0 3 0x14200 bored viomb 84354 498512 0 0 3 0x40014200 acpi0 acpi0 28697 386203 0 0 3 0x40014200 idle1 54441 272766 0 0 3 0x14200 bored softnet 53556 275753 0 0 3 0x14200 bored systqmp 40060 499766 0 0 3 0x14200 bored systq 41763 459191 0 0 3 0x40014200 bored softclock 31851 299337 0 0 3 0x40014200 idle0 1 30899 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 85387 (syz-executor.3) thread 0xffff800021236000 (410813) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8292d590) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 tsleep+0x12c sys/kern/kern_synch.c:158 #5 biowait+0x91 sys/kern/vfs_bio.c:1271 #6 bwrite+0x21b sys/kern/vfs_bio.c:772 #7 ufs_dirremove+0x28b #8 ufs_remove+0x154 sys/ufs/ufs/ufs_vnops.c:611 #9 VOP_REMOVE+0x118 sys/kern/vfs_vops.c:349 #10 dounlinkat+0x10c sys/kern/vfs_syscalls.c:1885 #11 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80789e12c0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 cache_lookup+0x2b4 sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #10 namei+0x36a sys/kern/vfs_lookup.c:245 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #13 Xsyscall+0x128 Process 93793 (syz-executor.1) thread 0xffff8000212367e0 (107294) exclusive rwlock vmmaplk r = 0 (0xfffffd8068e815e8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #3 uvmspace_fork+0x103 sys/uvm/uvm_map.c:4110 #4 process_new+0x181 sys/kern/kern_fork.c:263 #5 fork1+0x30b sys/kern/kern_fork.c:382 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd8008586018) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #3 uvmspace_fork+0x37 sys/uvm/uvm_map.c:4101 #4 process_new+0x181 sys/kern/kern_fork.c:263 #5 fork1+0x30b sys/kern/kern_fork.c:382 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 Process 28602 (syz-executor.0) thread 0xffff8000212377a0 (282795) exclusive rwlock vmmaplk r = 0 (0xfffffd8068e81758) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #3 uvmspace_fork+0x103 sys/uvm/uvm_map.c:4110 #4 process_new+0x181 sys/kern/kern_fork.c:263 #5 fork1+0x30b sys/kern/kern_fork.c:382 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd8008586468) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #3 uvmspace_fork+0x37 sys/uvm/uvm_map.c:4101 #4 process_new+0x181 sys/kern/kern_fork.c:263 #5 fork1+0x30b sys/kern/kern_fork.c:382 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10168 6475K 6731K 78643K 11605 0 pcb 13 8K 8K 78643K 49 0 rtable 134 5K 7K 78643K 316 0 ifaddr 59 12K 14K 78643K 99 0 counters 48 34K 34K 78643K 54 0 ioctlops 0 0K 4K 78643K 1575 0 iov 0 0K 12K 78643K 140 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1296 81K 82K 78643K 2058 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 23 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 49K 78643K 694 0 proc 70 87K 111K 78643K 405 0 subproc 52 3K 3K 78643K 52 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 18 0 in_multi 44 2K 3K 78643K 70 0 ether_multi 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 527 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 216 43K 45K 78643K 10074 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 9 0K 1K 78643K 20 0 temp 68 4189K 4253K 78643K 5179 0 kqueue 10 14K 18K 78643K 45 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 36 0 33 1 0 1 1 0 8 0 rtentry 112 72 0 16 2 0 2 2 0 8 0 unpcb 136 212 0 197 3 0 3 3 0 8 2 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 187 0 187 2 2 0 2 0 8 0 tcpcb 736 284 0 280 20 13 7 14 0 8 6 arp 120 10 0 2 1 0 1 1 0 8 0 inpcb 304 619 0 612 16 7 9 11 0 8 8 nd6 48 13 0 4 1 0 1 1 0 8 0 kcovpl 48 4 0 0 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 28 0 28 1 1 0 1 0 8 0 pfstitem 24 21 0 5 1 0 1 1 0 8 0 pfstkey 112 21 0 5 1 0 1 1 0 8 0 pfstate 320 21 0 5 2 0 2 2 0 8 0 pfrule 1360 32 0 27 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 303 0 70 18 0 18 18 0 8 2 art_table 32 304 0 70 3 0 3 3 0 8 0 art_node 16 71 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 10 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 21 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3108 0 1698 89 0 89 89 0 8 0 ffsino 272 3108 0 1698 95 0 95 95 0 8 0 nchpl 144 4118 0 2497 61 0 61 61 0 8 0 uvmvnodes 80 3305 0 0 68 0 68 68 0 8 0 vnodes 224 3305 0 0 195 0 195 195 0 8 0 namei 1024 11257 0 11257 1 0 1 1 0 8 1 percpumem 16 39 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 8 0 8 1 1 0 1 0 8 0 scxspl 216 10158 0 10158 11 9 2 8 0 8 2 plimitpl 152 196 0 185 1 0 1 1 0 8 0 sigapl 424 933 0 896 5 0 5 5 0 8 0 futexpl 64 7325 0 7325 1 0 1 1 0 8 1 knotepl 112 79 0 0 3 0 3 3 0 8 0 kqueuepl 216 99 0 93 3 2 1 3 0 8 0 pipepl 336 97 0 81 2 0 2 2 0 8 0 fdescpl 496 918 0 896 4 1 3 4 0 8 0 filepl 152 4999 0 4846 15 4 11 11 0 8 5 lockfpl 104 72 0 70 1 0 1 1 0 8 0 lockfspl 48 34 0 32 1 0 1 1 0 8 0 sessionpl 144 20 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 7 1 0 1 1 0 8 0 ucredpl 96 259 0 247 1 0 1 1 0 8 0 zombiepl 144 1023 0 1023 2 1 1 1 0 8 1 processpl 1064 933 0 896 3 0 3 3 0 8 0 procpl 672 1949 0 1904 5 0 5 5 0 8 0 srpgc 96 2 0 2 1 0 1 1 0 8 1 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 480 870 0 845 28 16 12 20 0 8 8 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 233 0 0 29 0 29 29 0 8 0 mtagpl 96 19 0 0 1 0 1 1 0 8 0 mbufpl 256 291 0 0 18 0 18 18 0 8 0 bufpl 288 4244 0 141 294 0 294 294 0 8 0 anonpl 24 235940 0 219634 131 2 129 129 0 186 23 amapchunkpl 152 24055 0 23386 35 4 31 31 0 158 1 amappl16 200 2705 0 2206 40 0 40 40 0 8 13 amappl15 192 165 0 164 1 0 1 1 0 8 0 amappl14 184 3 0 1 1 0 1 1 0 8 0 amappl13 176 42 0 40 1 0 1 1 0 8 0 amappl12 168 17 0 15 1 0 1 1 0 8 0 amappl11 160 376 0 359 1 0 1 1 0 8 0 amappl10 152 202 0 193 1 0 1 1 0 8 0 amappl9 144 486 0 484 1 0 1 1 0 8 0 amappl8 136 382 0 346 2 0 2 2 0 8 0 amappl7 128 79 0 69 1 0 1 1 0 8 0 amappl6 120 155 0 139 1 0 1 1 0 8 0 amappl5 112 793 0 774 1 0 1 1 0 8 0 amappl4 104 1090 0 1066 1 0 1 1 0 8 0 amappl3 96 188 0 170 1 0 1 1 0 8 0 amappl2 88 373 0 334 2 1 1 2 0 8 0 amappl1 80 19435 0 18970 13 2 11 13 0 8 0 amappl 88 9734 0 9566 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 918 0 896 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 918 0 896 1 0 1 1 0 8 0 vmmpekpl 168 10221 0 10192 2 0 2 2 0 8 0 vmmpepl 168 86050 0 84156 117 15 102 104 0 357 16 vmsppl 368 917 0 896 3 0 3 3 0 8 0 rwobjpl 56 25564 0 20954 69 0 69 69 0 8 0 pdppl 4096 1844 0 1792 74 20 54 62 0 8 2 pvpl 32 478544 0 458766 209 4 205 205 0 265 34 pmappl 248 917 0 896 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 656 0 36 18 0 18 18 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8279bff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff8292d388) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8292d388,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 yield() at yield+0x5a sys/kern/sched_bsd.c:291 pool_get(ffffffff8292e8d0,1) at pool_get+0x199 sys/kern/subr_pool.c:591 uvm_mapent_alloc(fffffd8068e81740,0) at uvm_mapent_alloc+0x2c9 sys/uvm/uvm_map.c:1779 uvm_map_mkentry(fffffd8068e81740,fffffd806820f658,fffffd806820f658,9c43f249000,1000,0,21dccea07d2e80af,1000) at uvm_map_mkentry+0x75 sys/uvm/uvm_map.c:1684 uvm_mapent_clone(fffffd8068e81740,9c43f249000,1000,0,1,7,1e498d7b8d51e7d6,fffffd8068202838,1000,fffffd8068e81740) at uvm_mapent_clone+0x9b sys/uvm/uvm_map.c:3814 uvm_mapent_forkcopy(1,fffffd8068e81740,fffffd8008586450,fffffd8068202838,ffff8000212765b0) at uvm_mapent_forkcopy+0x60 sys/uvm/uvm_map.c:3915 uvmspace_fork(ffff8000211f10b0) at uvmspace_fork+0x23d process_new(ffff8000ffff5a48,ffff8000211f10b0,1) at process_new+0x181 sys/kern/kern_fork.c:263 end trace frame: 0xffff800021276740, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8279bff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff8292d388) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8292d388,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 yield() at yield+0x5a sys/kern/sched_bsd.c:291 pool_get(ffffffff8292e8d0,1) at pool_get+0x199 sys/kern/subr_pool.c:591 uvm_mapent_alloc(fffffd8068e81740,0) at uvm_mapent_alloc+0x2c9 sys/uvm/uvm_map.c:1779 uvm_map_mkentry(fffffd8068e81740,fffffd806820f658,fffffd806820f658,9c43f249000,1000,0,21dccea07d2e80af,1000) at uvm_map_mkentry+0x75 sys/uvm/uvm_map.c:1684 uvm_mapent_clone(fffffd8068e81740,9c43f249000,1000,0,1,7,1e498d7b8d51e7d6,fffffd8068202838,1000,fffffd8068e81740) at uvm_mapent_clone+0x9b sys/uvm/uvm_map.c:3814 uvm_mapent_forkcopy(1,fffffd8068e81740,fffffd8008586450,fffffd8068202838,ffff8000212765b0) at uvm_mapent_forkcopy+0x60 sys/uvm/uvm_map.c:3915 uvmspace_fork(ffff8000211f10b0) at uvmspace_fork+0x23d process_new(ffff8000ffff5a48,ffff8000211f10b0,1) at process_new+0x181 sys/kern/kern_fork.c:263 fork1(ffff8000212377a0,1,ffffffff82306b10,0,ffff8000212767b0,0) at fork1+0x30b sys/kern/kern_fork.c:382 syscall(ffff800021276820) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021276820) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9dc0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82487574) at panic+0x177 sys/kern/subr_prf.c:202 vgonel(fffffd80714c2ac8,ffff800021236000) at vgonel+0x4f8 sys/kern/vfs_subr.c:1175 vrecycle(fffffd80714c2ac8,ffff800021236000) at vrecycle+0x54 sys/kern/vfs_subr.c:1102 ufs_inactive(ffff8000246de6e8) at ufs_inactive+0x2ae sys/ufs/ufs/ufs_inode.c:122 VOP_INACTIVE(fffffd80714c2ac8,ffff800021236000) at VOP_INACTIVE+0xc4 sys/kern/vfs_vops.c:505 vput(fffffd80714c2ac8) at vput+0xb6 sys/kern/vfs_subr.c:779 ufs_remove(ffff8000246de7e8) at ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618 VOP_REMOVE(fffffd80714c2828,fffffd80714c2ac8,ffff8000246de8c8) at VOP_REMOVE+0x118 sys/kern/vfs_vops.c:349 dounlinkat(ffff800021236000,ffffff9c,7f7ffffd5b90,0) at dounlinkat+0x10c sys/kern/vfs_syscalls.c:1885 syscall(ffff8000246dea40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000246dea40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6040, count: 3 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82487574) at panic+0x177 sys/kern/subr_prf.c:202 vgonel(fffffd80714c2ac8,ffff800021236000) at vgonel+0x4f8 sys/kern/vfs_subr.c:1175 vrecycle(fffffd80714c2ac8,ffff800021236000) at vrecycle+0x54 sys/kern/vfs_subr.c:1102 ufs_inactive(ffff8000246de6e8) at ufs_inactive+0x2ae sys/ufs/ufs/ufs_inode.c:122 VOP_INACTIVE(fffffd80714c2ac8,ffff800021236000) at VOP_INACTIVE+0xc4 sys/kern/vfs_vops.c:505 vput(fffffd80714c2ac8) at vput+0xb6 sys/kern/vfs_subr.c:779 ufs_remove(ffff8000246de7e8) at ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618 VOP_REMOVE(fffffd80714c2828,fffffd80714c2ac8,ffff8000246de8c8) at VOP_REMOVE+0x118 sys/kern/vfs_vops.c:349 dounlinkat(ffff800021236000,ffffff9c,7f7ffffd5b90,0) at dounlinkat+0x10c sys/kern/vfs_syscalls.c:1885 syscall(ffff8000246dea40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000246dea40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6040, count: -12