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 473498 71724 0 0x14000 0x200 0 zerothread db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a0e01) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f100,ffffffff82823261,bc,ffffffff827b914b) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff8000ffff7ac8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212365a8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212365a8,ffff8000212d3900,ffff8000212d3950) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000212d39d0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212d39d0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a73db170d0, 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(ffffffff827a0e01) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f100,ffffffff82823261,bc,ffffffff827b914b) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff8000ffff7ac8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212365a8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212365a8,ffff8000212d3900,ffff8000212d3950) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000212d39d0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212d39d0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a73db170d0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000212d3710 rbx 0xffff800020d59b9f rdx 0 rcx 0xffff8000212365a8 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xce2a7e2d9819fa65 r11 0xee504f676225be42 r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff8255bacc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000212d3700 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=245672 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff800021287648,0xffff800021236870 process=0xffff8000ffff7ac8 user=0xffff8000212ce000, vmspace=0xfffffd8068403930 estcpu=36, cpticks=4, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8353 445758 85679 0 2 0 syz-executor.0 8353 199062 85679 0 3 0x4000080 fsleep syz-executor.0 8353 420626 85679 0 2 0x4000000 syz-executor.0 76810 467807 1754 0 3 0x80 nanoslp syz-executor.6 76810 413414 1754 0 3 0x4000080 pipewr syz-executor.6 76810 515620 1754 0 3 0x4000080 fsleep syz-executor.6 1754 303712 16449 0 3 0x82 nanoslp syz-executor.6 5968 66505 16449 0 3 0x2 biowait syz-executor.2 12211 52275 16449 0 3 0x82 piperd syz-executor.4 52887 396864 16449 0 3 0x82 nanoslp syz-executor.7 61468 147068 16449 0 3 0x82 nanoslp syz-executor.5 85679 61889 16449 0 3 0x82 nanoslp syz-executor.0 91370 427623 0 0 3 0x14200 acct acct 49163 499059 0 0 3 0x14280 nfsidl nfsio 38841 179022 0 0 3 0x14280 nfsidl nfsio 6236 46206 0 0 3 0x14280 nfsidl nfsio 14386 67054 0 0 3 0x14280 nfsidl nfsio 98548 436405 0 0 3 0x14280 nfsidl nfsio 63403 244326 0 0 3 0x14280 nfsidl nfsio 69513 175195 0 0 3 0x14280 nfsidl nfsio 99071 344866 0 0 3 0x14280 nfsidl nfsio 90569 96022 0 0 3 0x14280 nfsidl nfsio 4187 83391 0 0 3 0x14280 nfsidl nfsio 9155 179081 0 0 3 0x14280 nfsidl nfsio 4125 52527 0 0 3 0x14280 nfsidl nfsio 97668 420898 0 0 3 0x14280 nfsidl nfsio 82650 115896 0 0 3 0x14280 nfsidl nfsio 84579 419926 0 0 3 0x14280 nfsidl nfsio 4150 217377 0 0 3 0x14280 nfsidl nfsio 91588 277607 0 0 3 0x14280 nfsidl nfsio 36049 108067 0 0 3 0x14280 nfsidl nfsio 78587 299294 0 0 3 0x14280 nfsidl nfsio 93394 178244 0 0 3 0x14280 nfsidl nfsio 21812 420483 16449 0 3 0x2 biowait syz-executor.1 89141 475313 0 0 3 0x14200 bored sosplice 65315 515548 16449 0 3 0x82 piperd syz-executor.3 16449 459235 63067 0 3 0x2000082 thrsleep syz-fuzzer 16449 210123 63067 0 3 0x6000082 nanoslp syz-fuzzer 16449 446058 63067 0 3 0x6000082 thrsleep syz-fuzzer 16449 91415 63067 0 3 0x6000082 wait syz-fuzzer 16449 204394 63067 0 3 0x6000082 wait syz-fuzzer 16449 221002 63067 0 3 0x6000082 wait syz-fuzzer 16449 159043 63067 0 3 0x6000082 thrsleep syz-fuzzer 16449 371316 63067 0 3 0x6000082 thrsleep syz-fuzzer 16449 473066 63067 0 3 0x6000082 wait syz-fuzzer 16449 361516 63067 0 3 0x6000082 wait syz-fuzzer 16449 54686 63067 0 3 0x6000082 thrsleep syz-fuzzer 16449 216578 63067 0 3 0x6000082 wait syz-fuzzer 16449 102898 63067 0 3 0x6000082 thrsleep syz-fuzzer 16449 175667 63067 0 2 0x6000082 syz-fuzzer 16449 492643 63067 0 3 0x6000082 wait syz-fuzzer 16449 5757 63067 0 3 0x6000082 wait syz-fuzzer 63067 140154 80818 0 3 0x10008a sigsusp ksh 80818 523946 9732 0 3 0x9a kqread sshd 21387 168059 1 0 3 0x100083 ttyin getty 9732 472075 1 0 3 0x88 kqread sshd 30155 75239 66801 74 3 0x1100092 bpf pflogd 66801 394269 1 0 3 0x80 netio pflogd 25219 367582 97230 73 3 0x1100090 kqread syslogd 97230 110738 1 0 3 0x100082 netio syslogd 526 252319 1 0 3 0x100080 kqread resolvd 38710 226553 98090 77 3 0x100092 kqread dhcpleased 2279 505419 98090 77 3 0x100092 kqread dhcpleased 98090 382092 1 0 3 0x80 kqread dhcpleased 52612 287765 0 0 3 0x14200 bored smr 71724 473498 0 0 7 0x14200 zerothread 46250 520931 0 0 3 0x14200 aiodoned aiodoned 51536 247273 0 0 3 0x14200 syncer update 15675 407206 0 0 3 0x14200 cleaner cleaner 53777 185745 0 0 2 0x14200 reaper 10955 141850 0 0 3 0x14200 pgdaemon pagedaemon 81012 340845 0 0 3 0x14200 bored viomb 5414 150514 0 0 3 0x40014200 acpi0 acpi0 8607 291048 0 0 3 0x40014200 idle1 71585 230916 0 0 3 0x14200 bored softnet3 51837 143049 0 0 3 0x14200 bored softnet2 96546 324188 0 0 3 0x14200 bored softnet1 16538 461397 0 0 3 0x14200 bored softnet0 33795 347323 0 0 3 0x14200 bored systqmp 63520 386879 0 0 3 0x14200 bored systq 48068 241039 0 0 3 0x40014200 bored softclock 62354 244147 0 0 3 0x40014200 idle0 1 151752 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d0b368) #0 witness_lock+0x447 #1 wakeup_n+0x37 sys/kern/kern_synch.c:541 #2 knote_enqueue+0x19d klist_empty sys/sys/event.h:362 [inline] #2 knote_enqueue+0x19d kqueue_wakeup sys/kern/kern_event.c:1689 [inline] #2 knote_enqueue+0x19d sys/kern/kern_event.c:2032 #3 knote_locked+0x18d #4 pipe_write+0x487 pipe_wakeup sys/kern/sys_pipe.c:375 [inline] #4 pipe_write+0x487 sys/kern/sys_pipe.c:618 #5 dofilewritev+0x1a0 sys/kern/sys_generic.c:375 #6 sys_write+0x87 sys/kern/sys_generic.c:295 #7 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #7 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #8 Xsyscall+0x128 exclusive mutex &kq->kq_lock r = 0 (0xfffffd806ef72370) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 knote_locked+0x108 knote_activate sys/kern/kern_event.c:1816 [inline] #3 knote_locked+0x108 sys/kern/kern_event.c:1848 #4 pipe_write+0x487 pipe_wakeup sys/kern/sys_pipe.c:375 [inline] #4 pipe_write+0x487 sys/kern/sys_pipe.c:618 #5 dofilewritev+0x1a0 sys/kern/sys_generic.c:375 #6 sys_write+0x87 sys/kern/sys_generic.c:295 #7 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #7 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #8 Xsyscall+0x128 Process 76810 (syz-executor.6) thread 0xffff800021236dd0 (413414) Process 5968 (syz-executor.2) thread 0xffff8000212868b0 (66505) Process 21812 (syz-executor.1) thread 0xffff8000211f3b40 (420483) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 6499K 6743K 78643K 13464 0 pcb 13 14K 16K 78643K 1129 0 rtable 243 7K 7K 78643K 785 0 pf 36 10K 10K 78643K 357 0 ifaddr 46 17K 18K 78643K 234 0 ifgroup 59 2K 2K 78643K 463 0 sysctl 2 0K 1K 78643K 11 0 counters 64 36K 36K 78643K 354 0 ioctlops 0 0K 4K 78643K 1522 0 iov 0 0K 20K 78643K 338 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1418 89K 89K 78643K 2934 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 82 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 90 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 85K 78643K 8891 0 sigio 0 0K 0K 78643K 238 0 proc 74 115K 128K 78643K 1112 0 subproc 104 6K 6K 78643K 247 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 342 0 in_multi 99 7K 7K 78643K 267 0 ether_multi 1 0K 0K 78643K 1 0 mrt 1 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 109 493K 493K 78643K 109 0 exec 0 0K 1K 78643K 1161 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 401 92K 106K 78643K 87540 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 273 0 NDP 14 0K 2K 78643K 197 0 temp 74 5920K 6000K 78643K 49169 0 kqueue 12 18K 32K 78643K 356 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 120 617 0 614 8 7 1 4 0 8 0 rtentry 112 241 0 128 4 0 4 4 0 8 0 unpcb 144 13134 0 13119 63 57 6 9 0 8 5 syncache 296 44 0 44 10 10 0 1 0 8 0 tcpqe 32 810 0 810 10 10 0 2 0 8 0 tcpcb 808 1468 0 1458 39 37 2 9 0 8 0 arp 120 42 0 23 1 0 1 1 0 8 0 inpcb 368 4113 0 4094 78 75 3 14 0 8 1 nd6 136 61 0 35 1 0 1 1 0 8 0 pkpcb 40 67 0 67 1 1 0 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 ppxss 1256 100 0 98 5 4 1 1 0 8 0 pffrag 232 17 0 16 4 3 1 1 0 482 0 pffrnode 88 17 0 16 4 3 1 1 0 8 0 pffrent 40 38 0 37 5 4 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 24 198 0 189 1 0 1 1 0 8 0 pfstkey 128 198 0 189 2 0 2 2 0 8 0 pfstate 376 198 0 189 12 8 4 8 0 8 1 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 256 958 0 489 30 0 30 30 0 8 0 art_table 32 959 0 489 4 0 4 4 0 8 0 art_node 16 237 0 134 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 11 1 0 1 1 0 8 0 semupl 112 37 0 37 1 1 0 1 0 8 0 semapl 112 47 0 39 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12002 0 10533 92 0 92 92 0 8 0 ffsino 272 12002 0 10533 99 0 99 99 0 8 0 nchpl 144 23025 0 22505 64 41 23 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 65800 0 65799 15 14 1 2 0 8 0 percpumem 16 190 0 145 1 0 1 1 0 8 0 kstatmem 264 318 0 290 2 0 2 2 0 8 0 scxspl 216 71863 0 71861 25 24 1 8 1 8 0 plimitpl 152 533 0 517 1 0 1 1 0 8 0 sigapl 424 9209 0 9143 11 3 8 8 0 8 0 futexpl 64 90603 0 90601 4 3 1 1 0 8 0 knotepl 120 643 0 0 19 1 18 19 0 8 0 kqueuepl 216 953 0 945 21 20 1 5 0 8 0 pipepl 320 1090 0 1061 29 23 6 8 0 8 3 fdescpl 496 9169 0 9143 7 3 4 5 0 8 0 filepl 152 44723 0 44481 84 69 15 19 0 8 5 lockfpl 104 1342 0 1340 5 4 1 3 0 8 0 lockfspl 48 456 0 454 1 0 1 1 0 8 0 sessionpl 144 35 0 18 1 0 1 1 0 8 0 pgrppl 48 98 0 81 1 0 1 1 0 8 0 ucredpl 104 5846 0 5833 1 0 1 1 0 8 0 zombiepl 144 9390 0 9388 1 0 1 1 0 8 0 processpl 1072 9209 0 9143 6 1 5 5 0 8 0 procpl 696 24138 0 24052 23 13 10 10 0 8 1 sosppl 168 58 0 57 6 5 1 1 0 8 0 sockpl 488 18001 0 17970 413 399 14 30 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 33 0 0 4 1 3 3 0 8 0 mcl2k2 2112 12 0 0 1 0 1 1 0 8 0 mcl2k 2048 303 0 0 34 4 30 34 0 8 0 mtagpl 96 136 0 0 3 0 3 3 0 8 0 mbufpl 256 1032 0 0 55 0 55 55 0 8 0 bufpl 288 16249 0 9920 453 0 453 453 0 8 0 anonpl 24 1059776 0 1043974 208 78 130 132 0 186 25 amapchunkpl 152 277639 0 276722 75 36 39 46 0 158 2 amappl16 200 25765 0 25237 109 77 32 46 0 8 4 amappl15 192 14 0 13 1 0 1 1 0 8 0 amappl14 184 188 0 174 2 1 1 2 0 8 0 amappl13 176 20 0 19 2 1 1 1 0 8 0 amappl12 168 10032 0 9998 4 2 2 2 0 8 0 amappl11 160 58 0 43 1 0 1 1 0 8 0 amappl10 152 45 0 35 1 0 1 1 0 8 0 amappl9 144 199 0 198 1 0 1 1 0 8 0 amappl8 136 413 0 301 4 0 4 4 0 8 0 amappl7 128 93 0 79 1 0 1 1 0 8 0 amappl6 120 399 0 371 2 1 1 2 0 8 0 amappl5 112 303 0 292 1 0 1 1 0 8 0 amappl4 104 768 0 723 4 2 2 4 0 8 0 amappl3 96 54703 0 54608 4 1 3 3 0 8 0 amappl2 88 9702 0 9631 3 1 2 3 0 8 0 amappl1 80 42038 0 41481 23 9 14 23 0 8 0 amappl 88 86769 0 86514 8 1 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 9169 0 9142 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9169 0 9142 1 0 1 1 0 8 0 vmmpekpl 168 69282 0 69209 4 0 4 4 0 8 0 vmmpepl 168 548013 0 545541 229 108 121 130 0 357 6 vmsppl 464 9168 0 9142 6 1 5 5 0 8 0 rwobjpl 56 145238 0 137471 121 8 113 115 0 8 2 pdppl 4096 18346 0 18284 508 438 70 80 0 8 8 pvpl 32 2682623 0 2660670 473 249 224 340 0 265 42 pmappl 248 9168 0 9142 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1428 0 576 25 0 25 25 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82b97ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 sys/dev/kcov.c:158 __mp_lock(ffffffff82c77498) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c77498) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000211d0fd0,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 sys/dev/kcov.c:235 uvm_pmr_remove_1strange(ffff8000211d1158,0,0,0) at uvm_pmr_remove_1strange+0x1ef uvm_pmr_findnextsegment sys/uvm/uvm_pmemrange.c:534 [inline] uvm_pmr_remove_1strange(ffff8000211d1158,0,0,0) at uvm_pmr_remove_1strange+0x1ef sys/uvm/uvm_pmemrange.c:637 uvm_pagezero_thread(ffff8000211acda0) at uvm_pagezero_thread+0x1ae sys/uvm/uvm_pmemrange.c:2185 end trace frame: 0x0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff82b97ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 sys/dev/kcov.c:158 __mp_lock(ffffffff82c77498) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c77498) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000211d0fd0,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 sys/dev/kcov.c:235 uvm_pmr_remove_1strange(ffff8000211d1158,0,0,0) at uvm_pmr_remove_1strange+0x1ef uvm_pmr_findnextsegment sys/uvm/uvm_pmemrange.c:534 [inline] uvm_pmr_remove_1strange(ffff8000211d1158,0,0,0) at uvm_pmr_remove_1strange+0x1ef sys/uvm/uvm_pmemrange.c:637 uvm_pagezero_thread(ffff8000211acda0) at uvm_pagezero_thread+0x1ae sys/uvm/uvm_pmemrange.c:2185 end trace frame: 0x0, count: -10 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(ffffffff827a0e01) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f100,ffffffff82823261,bc,ffffffff827b914b) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff8000ffff7ac8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212365a8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212365a8,ffff8000212d3900,ffff8000212d3950) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000212d39d0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212d39d0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a73db170d0, count: 7 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a0e01) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f100,ffffffff82823261,bc,ffffffff827b914b) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff8000ffff7ac8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188 exit1(ffff8000212365a8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212365a8,ffff8000212d3900,ffff8000212d3950) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000212d39d0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212d39d0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a73db170d0, count: -8