panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_unveil.c", line 188 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 349713 59564 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a5b43) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828207b7,ffffffff8282550b,bc,ffffffff827bb8de) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff80002128a5c8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212deb30,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212deb30,ffff800025f7db80,ffff800025f7dbd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800025f7dc50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800025f7dc50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x787e29abf120, count: 7 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: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_unveil.c", line 188 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a5b43) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828207b7,ffffffff8282550b,bc,ffffffff827bb8de) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff80002128a5c8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212deb30,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212deb30,ffff800025f7db80,ffff800025f7dbd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800025f7dc50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800025f7dc50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x787e29abf120, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800025f7d990 rbx 0xffff800020d59b9f rdx 0 rcx 0xffff8000212deb30 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb8d6e2e9cd655cfe r11 0xb5807050478d984c r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff81b9cdac db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800025f7d980 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=89718 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002127ae38,0xffff80002127a368 process=0xffff80002128a5c8 user=0xffff800025f78000, vmspace=0xfffffd806d60c920 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53800 305769 3982 0 2 0 syz-executor.0 26524 520247 59144 0 2 0 syz-executor.2 26524 125729 59144 0 2 0x4000000 syz-executor.2 67172 100730 43368 0 3 0x80 nanoslp syz-executor.6 67172 319872 43368 0 3 0x4000080 netio syz-executor.6 67172 326993 43368 0 3 0x4000080 fsleep syz-executor.6 61771 396545 7675 0 3 0x82 nanoslp syz-executor.1 53304 136375 7675 0 3 0x2 getblk syz-executor.7 3982 25593 7675 0 3 0x82 nanoslp syz-executor.0 98883 308528 7675 0 3 0x2 biowait syz-executor.3 85851 45562 0 0 3 0x14200 acct acct 46590 71531 0 0 3 0x14280 nfsidl nfsio 79968 175764 0 0 3 0x14280 nfsidl nfsio 91819 41675 0 0 3 0x14280 nfsidl nfsio 3084 197481 0 0 3 0x14280 nfsidl nfsio 29476 203649 0 0 3 0x14280 nfsidl nfsio 4401 440737 0 0 3 0x14280 nfsidl nfsio 56160 256659 0 0 3 0x14280 nfsidl nfsio 55128 265241 0 0 3 0x14280 nfsidl nfsio 32822 514957 0 0 3 0x14280 nfsidl nfsio 8487 487833 0 0 3 0x14280 nfsidl nfsio 71283 421241 0 0 3 0x14280 nfsidl nfsio 12115 261897 0 0 3 0x14280 nfsidl nfsio 21186 498659 0 0 3 0x14280 nfsidl nfsio 55420 371360 0 0 3 0x14280 nfsidl nfsio 11754 258154 0 0 3 0x14280 nfsidl nfsio 7095 266493 0 0 3 0x14280 nfsidl nfsio 26663 425718 0 0 3 0x14280 nfsidl nfsio 17943 83191 0 0 3 0x14280 nfsidl nfsio 27215 204971 0 0 3 0x14280 nfsidl nfsio 17812 180100 0 0 3 0x14280 nfsidl nfsio 15155 42176 7675 0 3 0x2 biowait syz-executor.4 59144 261467 7675 0 3 0x82 nanoslp syz-executor.2 29320 269914 0 0 3 0x14200 bored sosplice 43368 116490 7675 0 3 0x82 nanoslp syz-executor.6 53978 397924 7675 0 3 0x82 nanoslp syz-executor.5 7675 505943 12670 0 3 0x2000082 thrsleep syz-fuzzer 7675 238441 12670 0 3 0x6000082 nanoslp syz-fuzzer 7675 260832 12670 0 3 0x6000082 wait syz-fuzzer 7675 168408 12670 0 3 0x6000082 wait syz-fuzzer 7675 351685 12670 0 3 0x6000082 wait syz-fuzzer 7675 324193 12670 0 3 0x6000082 wait syz-fuzzer 7675 269391 12670 0 3 0x6000082 kqread syz-fuzzer 7675 282895 12670 0 3 0x6000082 wait syz-fuzzer 7675 400669 12670 0 3 0x6000082 thrsleep syz-fuzzer 7675 232165 12670 0 3 0x6000082 wait syz-fuzzer 7675 490283 12670 0 3 0x6000082 thrsleep syz-fuzzer 7675 363227 12670 0 3 0x6000082 thrsleep syz-fuzzer 7675 160547 12670 0 3 0x6000082 wait syz-fuzzer 7675 140220 12670 0 3 0x6000082 thrsleep syz-fuzzer 7675 348928 12670 0 3 0x6000082 wait syz-fuzzer 7675 193208 12670 0 3 0x6000082 thrsleep syz-fuzzer 12670 97000 2886 0 3 0x10008a sigsusp ksh 2886 271640 89370 0 3 0x9a kqread sshd 8470 265517 1 0 3 0x100083 ttyin getty 89370 66490 1 0 3 0x88 kqread sshd 20313 505932 54228 74 3 0x1100092 bpf pflogd 54228 79408 1 0 3 0x80 netio pflogd 32713 499068 22217 73 3 0x1100090 kqread syslogd 22217 108758 1 0 3 0x100082 netio syslogd 7641 149139 1 0 3 0x100080 kqread resolvd 14974 310643 74905 77 3 0x100092 kqread dhcpleased 10983 392350 74905 77 3 0x100092 kqread dhcpleased 74905 430004 1 0 3 0x80 kqread dhcpleased 887 298010 0 0 3 0x14200 bored smr 41848 29856 0 0 2 0x14200 zerothread 7791 325668 0 0 3 0x14200 aiodoned aiodoned 46188 508754 0 0 3 0x14200 syncer update 37683 375392 0 0 3 0x14200 cleaner cleaner 59564 349713 0 0 7 0x14200 reaper 31525 81656 0 0 3 0x14200 pgdaemon pagedaemon 85665 210077 0 0 3 0x14200 bored viomb 36292 265939 0 0 3 0x40014200 acpi0 acpi0 58532 415813 0 0 3 0x40014200 idle1 94814 3858 0 0 3 0x14200 bored softnet3 66519 131447 0 0 3 0x14200 bored softnet2 31957 285967 0 0 3 0x14200 bored softnet1 67215 152694 0 0 3 0x14200 bored softnet0 70659 312207 0 0 3 0x14200 bored systqmp 15327 433891 0 0 3 0x14200 bored systq 16765 232922 0 0 3 0x40014200 bored softclock 66844 482303 0 0 3 0x40014200 idle0 1 310606 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 26524 (syz-executor.2) thread 0xffff80002127b3a8 (125729) Process 53304 (syz-executor.7) thread 0xffff8000212878a8 (136375) Process 98883 (syz-executor.3) thread 0xffff800021216018 (308528) Process 15155 (syz-executor.4) thread 0xffff8000212dede8 (42176) Process 59564 (reaper) thread 0xffff8000211acae8 (349713) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 6504K 6891K 78643K 14888 0 pcb 14 13K 15K 78643K 1576 0 rtable 241 7K 7K 78643K 974 0 pf 35 10K 10K 78643K 225 0 ifaddr 46 16K 17K 78643K 189 0 ifgroup 60 2K 2K 78643K 335 0 sysctl 2 0K 0K 78643K 2 0 counters 62 36K 36K 78643K 224 0 ioctlops 0 0K 4K 78643K 1818 0 iov 0 0K 37K 78643K 463 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1495 93K 94K 78643K 6873 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 77 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 305 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 85K 78643K 7828 0 sigio 0 0K 0K 78643K 91 0 proc 73 115K 115K 78643K 1414 0 subproc 104 6K 7K 78643K 348 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 375 0 in_multi 99 7K 7K 78643K 429 0 ether_multi 1 0K 0K 78643K 10 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 265 1182K 1182K 78643K 265 0 exec 0 0K 1K 78643K 1744 0 pfkey data 0 0K 0K 78643K 12 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 8 62K 64K 78643K 10 0 UVM amap 419 96K 113K 78643K 77989 0 UVM aobj 131 4K 4K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 153 0 NDP 13 0K 1K 78643K 146 0 temp 74 5920K 6052K 78643K 90682 0 kqueue 13 20K 28K 78643K 880 0 SYN cache 2 1720K 1728K 78643K 3 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 120 477 0 474 10 9 1 3 0 8 0 rtentry 112 325 0 213 4 0 4 4 0 8 0 unpcb 144 6589 0 6572 86 84 2 10 0 8 1 syncache 296 68 0 68 17 16 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 130 0 130 10 10 0 1 0 8 0 tcpcb 808 2023 0 2018 105 103 2 11 0 8 1 arp 120 59 0 41 1 0 1 1 0 8 0 inpcb 368 5878 0 5869 171 168 3 13 0 8 2 nd6 136 89 0 63 1 0 1 1 0 8 0 pkpcb 40 15 0 15 5 4 1 1 0 8 1 kcovpl 48 26 0 18 1 0 1 1 0 8 0 ppxss 1256 33 0 33 11 11 0 1 0 8 0 pffrag 232 90 0 88 3 2 1 1 0 482 0 pffrnode 88 90 0 88 3 2 1 1 0 8 0 pffrent 40 269 0 267 3 2 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 pfstitem 24 234 0 220 1 0 1 1 0 8 0 pfstkey 128 234 0 220 1 0 1 1 0 8 0 pfstate 376 234 0 220 9 6 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1315 0 846 33 3 30 30 0 8 0 art_table 32 1316 0 846 4 0 4 4 0 8 0 art_node 16 324 0 222 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semapl 112 303 0 293 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14484 0 12979 95 0 95 95 0 8 0 ffsino 272 14484 0 12979 101 0 101 101 0 8 0 nchpl 144 24981 0 23329 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 94888 0 94887 7 6 1 2 0 8 0 percpumem 16 125 0 81 1 0 1 1 0 8 0 kstatmem 264 188 0 162 2 0 2 2 0 8 0 scxspl 216 69582 0 69580 19 18 1 8 1 8 0 plimitpl 152 559 0 543 1 0 1 1 0 8 0 sigapl 424 8152 0 8085 10 2 8 8 0 8 0 futexpl 64 63821 0 63820 1 0 1 1 0 8 0 knotepl 120 923 0 0 21 8 13 18 0 8 0 kqueuepl 216 1911 0 1902 29 28 1 5 0 8 0 pipepl 320 1701 0 1673 58 55 3 13 0 8 0 fdescpl 496 8092 0 8066 5 1 4 5 0 8 0 filepl 152 63393 0 63148 191 180 11 21 0 8 1 lockfpl 104 2708 0 2706 7 6 1 2 0 8 0 lockfspl 48 866 0 864 1 0 1 1 0 8 0 sessionpl 144 42 0 25 1 0 1 1 0 8 0 pgrppl 48 231 0 214 1 0 1 1 0 8 0 ucredpl 104 20853 0 20839 1 0 1 1 0 8 0 zombiepl 144 9508 0 9506 4 3 1 1 0 8 0 processpl 1072 8152 0 8085 5 0 5 5 0 8 0 procpl 696 21538 0 21451 24 14 10 11 0 8 1 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 66 0 64 13 12 1 1 0 8 0 sockpl 488 12966 0 12935 411 405 6 35 0 8 2 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 16 0 0 2 0 2 2 0 8 0 mcl12k 12288 12 0 0 2 0 2 2 0 8 0 mcl9k 9216 16 0 0 2 0 2 2 0 8 0 mcl8k 8192 26 0 0 4 2 2 3 0 8 0 mcl4k 4096 31 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 309 0 0 33 8 25 33 0 8 0 mtagpl 96 156 0 0 4 2 2 4 0 8 0 mbufpl 256 1626 0 0 66 0 66 66 0 8 0 bufpl 288 17537 0 11213 453 0 453 453 0 8 0 anonpl 24 874220 0 859421 210 112 98 123 0 186 0 amapchunkpl 152 247513 0 246647 65 25 40 49 0 158 0 amappl16 200 17673 0 17252 113 88 25 43 0 8 2 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 240 0 222 2 1 1 2 0 8 0 amappl13 176 17 0 17 2 2 0 1 0 8 0 amappl12 168 9027 0 8997 4 2 2 3 0 8 0 amappl11 160 62 0 46 1 0 1 1 0 8 0 amappl10 152 80 0 63 1 0 1 1 0 8 0 amappl9 144 227 0 226 2 1 1 1 0 8 0 amappl8 136 542 0 407 5 0 5 5 0 8 0 amappl7 128 106 0 89 2 0 2 2 0 8 0 amappl6 120 434 0 406 3 2 1 3 0 8 0 amappl5 112 387 0 376 1 0 1 1 0 8 0 amappl4 104 844 0 797 5 3 2 4 0 8 0 amappl3 96 48770 0 48694 4 1 3 3 0 8 0 amappl2 88 8545 0 8468 3 1 2 3 0 8 0 amappl1 80 38132 0 37590 23 10 13 23 0 8 0 amappl 88 77140 0 76902 7 0 7 7 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 8092 0 8065 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8092 0 8065 1 0 1 1 0 8 0 vmmpekpl 168 63878 0 63807 6 2 4 4 0 8 0 vmmpepl 168 494672 0 492276 340 223 117 134 0 357 0 vmsppl 464 8091 0 8064 5 1 4 5 0 8 0 rwobjpl 56 127032 0 119394 121 11 110 112 0 8 0 pdppl 4096 16192 0 16128 657 589 68 80 0 8 4 pvpl 32 2479473 0 2458415 429 246 183 344 0 265 6 pmappl 248 8091 0 8064 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1751 0 892 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c45ff0) at x86_ipi_db+0x1e 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+0x27 __mp_lock(ffffffff82d8b330) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d8b330) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000211b96f0,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d pmap_do_remove(fffffd806d60bd98,20000000,20010000,0) at pmap_do_remove+0x51d sys/arch/amd64/amd64/pmap.c:1795 uvm_unmap_kill_entry_withlock(fffffd806d60c750,fffffd806b9a22d8,0) at uvm_unmap_kill_entry_withlock+0x1b0 sys/uvm/uvm_map.c:1928 uvm_map_teardown(fffffd806d60c750) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806d60c750) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2565 uvmspace_free(fffffd806d60c750) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503 reaper(ffff8000211acae8) at reaper+0x19a sys/kern/kern_exit.c:449 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff82c45ff0) at x86_ipi_db+0x1e 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+0x27 __mp_lock(ffffffff82d8b330) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d8b330) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000211b96f0,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d pmap_do_remove(fffffd806d60bd98,20000000,20010000,0) at pmap_do_remove+0x51d sys/arch/amd64/amd64/pmap.c:1795 uvm_unmap_kill_entry_withlock(fffffd806d60c750,fffffd806b9a22d8,0) at uvm_unmap_kill_entry_withlock+0x1b0 sys/uvm/uvm_map.c:1928 uvm_map_teardown(fffffd806d60c750) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806d60c750) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2565 uvmspace_free(fffffd806d60c750) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503 reaper(ffff8000211acae8) at reaper+0x19a sys/kern/kern_exit.c:449 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a5b43) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828207b7,ffffffff8282550b,bc,ffffffff827bb8de) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff80002128a5c8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212deb30,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212deb30,ffff800025f7db80,ffff800025f7dbd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800025f7dc50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800025f7dc50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x787e29abf120, count: 7 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a5b43) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828207b7,ffffffff8282550b,bc,ffffffff827bb8de) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff80002128a5c8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212deb30,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212deb30,ffff800025f7db80,ffff800025f7dbd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800025f7dc50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800025f7dc50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x787e29abf120, count: -8