panic: kernel diagnostic assertion "pg->wire_count == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_page.c", line 1326 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 164285 1384 32767 0x10 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b03e7) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833f1046,ffffffff8333fc7a,52e,ffffffff834071a1) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pagedequeue(fffffd8008355c18) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324 uvn_flush(fffffd8068c23b00,0,0,19) at uvn_flush+0x4fc sys/uvm/uvm_vnode.c:683 uvn_detach(fffffd8068c23b00) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 uvm_unmap_detach(ffff800038420a40,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd800efbfba0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 exit1(ffff8000fffe67e8,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000fffe67e8,ffff800038420c10,ffff800038420b60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038420c10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038420c10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x799041660ff0, 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: kernel diagnostic assertion "pg->wire_count == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_page.c", line 1326 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b03e7) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833f1046,ffffffff8333fc7a,52e,ffffffff834071a1) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pagedequeue(fffffd8008355c18) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324 uvn_flush(fffffd8068c23b00,0,0,19) at uvn_flush+0x4fc sys/uvm/uvm_vnode.c:683 uvn_detach(fffffd8068c23b00) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 uvm_unmap_detach(ffff800038420a40,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd800efbfba0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 exit1(ffff8000fffe67e8,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000fffe67e8,ffff800038420c10,ffff800038420b60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038420c10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038420c10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x799041660ff0, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800038420730 rbx 0xffff8000299eee07 rdx 0 rcx 0xffff8000fffe67e8 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xeea6ab1b6ee567aa r11 0xe3a6a4e10bf578e7 r12 0xffff8000299eec08 r13 0 r14 0 r15 0x1 rip 0xffffffff81e1ce35 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800038420720 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=294753 pid=48929 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=65, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffe67e8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe7ca8,0xffff8000fffe62c8 process=0xffff80003b41c4f0 user=0xffff80003841b000, vmspace=0xfffffd800efbfba0 estcpu=15, cpticks=13, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1384 164285 95867 32767 7 0x10 syz-executor 1384 355699 95867 32767 3 0x4000090 fsleep syz-executor 77821 437707 13159 32767 2 0x10 syz-executor 49875 11763 50045 32767 2 0x10 syz-executor 49875 511558 50045 32767 3 0x4000090 fsleep syz-executor 49875 379329 50045 32767 3 0x4000090 fsleep syz-executor 54324 27480 65899 32767 2 0x10 syz-executor 54324 358148 65899 32767 3 0x4000090 fsleep syz-executor 97076 43198 50552 0 2 0x2 syz-executor 67676 393442 84142 0 3 0x100082 sbwait ndp 84142 151544 90066 0 3 0x10008a sigsusp sh 65899 522993 65208 32767 2 0x10 syz-executor 12590 435814 37012 32767 2 0x10000010 syz-executor 13159 203029 13677 32767 2 0x10 syz-executor 95867 511980 58071 32767 3 0x90 nanoslp syz-executor 50045 293865 66506 32767 2 0x10 syz-executor 90066 81831 88826 0 3 0x80 wait syz-executor 86866 463182 15562 32767 3 0x90 nanoslp syz-executor 58071 410709 50552 0 3 0x82 wait syz-executor 15562 93209 50552 0 3 0x82 wait syz-executor 88826 272811 50552 0 3 0x82 wait syz-executor 13677 138242 50552 0 3 0x82 wait syz-executor 66506 112981 50552 0 3 0x82 wait syz-executor 37012 242442 50552 0 3 0x82 wait syz-executor 65208 78744 50552 0 3 0x82 wait syz-executor 50552 182090 28674 0 3 0x82 kqread syz-executor 28674 134378 54801 0 3 0x10008a sigsusp ksh 54801 520478 10823 0 3 0x98 kqread sshd-session 10823 450627 19821 0 3 0x92 kqread sshd-session 86965 249961 1 0 3 0x100083 ttyin getty 19821 348178 1 0 3 0x88 kqread sshd 9106 170932 88520 73 3 0x1100090 kqread syslogd 88520 212061 1 0 3 0x100082 sbwait syslogd 5989 206467 1 0 3 0x100080 kqread resolvd 88882 255792 65609 77 3 0x100092 kqread dhcpleased 47196 269148 65609 77 3 0x100092 kqread dhcpleased 65609 76761 1 0 3 0x80 kqread dhcpleased 30939 278516 0 0 3 0x14200 bored smr 41879 484170 0 0 2 0x14200 zerothread 43305 132906 0 0 3 0x14200 aiodoned aiodoned 84503 143915 0 0 3 0x14200 syncer update 85280 364187 0 0 3 0x14200 cleaner cleaner 68775 147540 0 0 3 0x14200 reaper reaper 35314 269858 0 0 3 0x14200 pgdaemon pagedaemon 50752 498638 0 0 3 0x14200 bored viomb 10958 360237 0 0 3 0x40014200 acpi0 acpi0 52260 317420 0 0 3 0x40014200 idle1 1581 248081 0 0 3 0x14200 bored softnet1 92688 117011 0 0 3 0x14200 bored softnet0 37696 285127 0 0 3 0x14200 bored systqmp 51559 82343 0 0 3 0x14200 bored systq 79071 332583 0 0 3 0x14200 tmoslp softclockmp 56139 74254 0 0 3 0x40014200 tmoslp softclock 27560 238778 0 0 3 0x40014200 idle0 1 485616 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839e4168) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 uvn_flush+0x1e7 sys/uvm/uvm_vnode.c:-1 #3 uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 #4 uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 #5 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 #6 exit1+0x6fc sys/kern/kern_exit.c:260 #7 sys_exit+0x1a sys/kern/kern_exit.c:-1 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 1384 (syz-executor) thread 0xffff80003b420fb8 (164285) exclusive rwlock uobjlk r = 0 (0xfffffd806dadc6d8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 uvm_fault+0x1e5 sys/uvm/uvm_fault.c:649 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #4 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd800efbf130) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #7 recall_trap+0x8 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 10958K 10973K 166960K 11305 0 pcb 17 12K 12K 166960K 17 0 rtable 213 6K 6K 166960K 353 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 3 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 2K 166960K 33 0 iov 0 0K 20K 166960K 25 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1529 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 83 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 23 82K 121K 166960K 395 0 sigio 0 0K 0K 166960K 6 0 proc 58 99K 147K 166960K 512 0 subproc 63 3K 4K 166960K 225 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 98 0 in_multi 88 6K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 211 943K 943K 166960K 211 0 exec 0 0K 1K 166960K 451 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 230 162K 195K 166960K 5013 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 45 90K 110K 166960K 1445 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 16 0 NDP 10 0K 2K 166960K 27 0 temp 36 8671K 8735K 166960K 4875 0 kqueue 13 20K 28K 166960K 67 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 54 0 50 1 0 1 1 0 8 0 rtentry 176 111 0 13 5 0 5 5 0 8 0 unpcb 144 270 0 255 4 2 2 4 0 8 1 syncache 336 6 0 6 1 1 0 1 0 8 0 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 84 0 77 3 1 2 2 0 8 1 arp 136 18 0 2 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 0 1 0 1 1 0 8 0 inpcb 328 321 0 311 7 5 2 7 0 8 0 nd6 152 24 0 4 1 0 1 1 0 8 0 kcovpl 48 25 0 18 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 46 29 3 26 29 0 8 0 art_table 40 454 0 46 5 0 5 5 0 8 0 art_node 32 111 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 8 2 1 1 1 0 8 1 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 81 0 71 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1859 0 332 96 0 96 96 0 8 0 ffsino 296 1859 0 332 118 0 118 118 0 8 0 nchpl 144 2316 0 610 64 0 64 64 0 8 0 vnodes 216 2093 0 0 117 0 117 117 0 8 0 namei 1024 7310 0 7310 2 1 1 2 0 8 1 percpumem 16 50 0 1 1 0 1 1 0 8 0 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 7727 0 7727 10 6 4 8 1 8 4 plimitpl 152 169 0 146 3 1 2 2 0 8 1 sigapl 424 643 0 590 7 0 7 7 0 8 0 knotepl 120 598 0 0 19 0 19 19 0 8 0 kqueuepl 224 144 0 135 5 4 1 5 0 8 0 pipepl 344 179 0 151 3 0 3 3 0 8 0 fdescpl 528 627 0 592 3 0 3 3 0 8 0 filepl 160 3111 0 2914 15 5 10 15 0 8 0 lockfpl 104 67 0 65 1 0 1 1 0 8 0 lockfspl 48 24 0 22 1 0 1 1 0 8 0 sessionpl 144 40 0 25 1 0 1 1 0 8 0 pgrppl 48 71 0 48 1 0 1 1 0 8 0 ucredpl 104 438 0 421 1 0 1 1 0 8 0 zombiepl 144 592 0 590 1 0 1 1 0 8 0 processpl 1232 643 0 590 5 0 5 5 0 8 0 procpl 664 964 0 907 6 0 6 6 0 8 0 sockpl 752 649 0 620 11 6 5 11 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 43 0 0 6 0 6 6 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1290 0 0 81 0 81 81 0 8 0 bufpl 280 2556 0 118 175 0 175 175 0 8 0 anonpl 32 8110 0 0 67 1 66 66 0 246 0 amapchunkpl 152 16014 0 15508 38 5 33 38 0 158 10 amappl16 200 2559 0 2539 21 9 12 14 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 6 0 6 2 2 0 1 0 8 0 amappl13 176 401 0 398 1 0 1 1 0 8 0 amappl12 168 959 0 916 3 0 3 3 0 8 0 amappl11 160 12 0 12 1 1 0 1 0 8 0 amappl10 152 40 0 30 1 0 1 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 73 0 72 1 0 1 1 0 8 0 amappl6 120 262 0 249 1 0 1 1 0 8 0 amappl5 112 77 0 69 1 0 1 1 0 8 0 amappl4 104 376 0 351 1 0 1 1 0 8 0 amappl3 96 2563 0 2465 4 0 4 4 0 8 0 amappl2 88 502 0 448 2 0 2 2 0 8 0 amappl1 80 10170 0 9594 15 1 14 15 0 8 0 amappl 88 4275 0 4121 5 0 5 5 0 92 0 uvmvnodes 80 104 0 0 3 0 3 3 0 8 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 627 0 592 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 627 0 592 1 0 1 1 0 8 0 vmmpekpl 168 6975 0 6939 2 0 2 2 0 8 0 vmmpepl 168 47698 0 45796 102 9 93 102 0 357 1 vmsppl 488 626 0 591 7 1 6 6 0 8 0 rwobjpl 80 16297 0 15351 25 0 25 25 0 8 0 pdppl 4096 1262 0 1182 114 30 84 96 0 8 4 pvpl 32 15608 0 0 126 0 126 126 0 265 0 pmappl 256 626 0 591 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 361 0 39 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837cfff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:159 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83a127c0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a127c0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 uvm_fault(fffffd800efbf030,52248518000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80002a2e9ff0,52248518000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a2e9ff0) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b251e087d20, count: 2 ddb{0}> trace x86_ipi_db(ffffffff837cfff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:159 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83a127c0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a127c0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 uvm_fault(fffffd800efbf030,52248518000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80002a2e9ff0,52248518000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a2e9ff0) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b251e087d20, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b03e7) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833f1046,ffffffff8333fc7a,52e,ffffffff834071a1) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pagedequeue(fffffd8008355c18) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324 uvn_flush(fffffd8068c23b00,0,0,19) at uvn_flush+0x4fc sys/uvm/uvm_vnode.c:683 uvn_detach(fffffd8068c23b00) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 uvm_unmap_detach(ffff800038420a40,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd800efbfba0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 exit1(ffff8000fffe67e8,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000fffe67e8,ffff800038420c10,ffff800038420b60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038420c10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038420c10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x799041660ff0, count: 3 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b03e7) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833f1046,ffffffff8333fc7a,52e,ffffffff834071a1) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pagedequeue(fffffd8008355c18) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324 uvn_flush(fffffd8068c23b00,0,0,19) at uvn_flush+0x4fc sys/uvm/uvm_vnode.c:683 uvn_detach(fffffd8068c23b00) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 uvm_unmap_detach(ffff800038420a40,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd800efbfba0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 exit1(ffff8000fffe67e8,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000fffe67e8,ffff800038420c10,ffff800038420b60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038420c10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038420c10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x799041660ff0, count: -12