panic: mtx 0xffffffff83914d18: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *408595 93896 0 0 0 1 syz-executor 181132 44952 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dda5a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83914d18) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83914d18) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800813e708) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8067c81978,0,ffff80002a2fa118,ffff80002a2fa0f4,0,2,49475cdbceb2be93,ffff80002a2fa370) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa1a0,ffff80002a2fa1a8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa2b0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bad5d48,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002a2fa4c0,2000000001c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2fa4c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x77bd510f9990, count: 2 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: mtx 0xffffffff83914d18: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dda5a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83914d18) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83914d18) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800813e708) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8067c81978,0,ffff80002a2fa118,ffff80002a2fa0f4,0,2,49475cdbceb2be93,ffff80002a2fa370) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa1a0,ffff80002a2fa1a8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa2b0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bad5d48,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002a2fa4c0,2000000001c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2fa4c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x77bd510f9990, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a2f9e60 rbx 0xffff8000299eedcf rdx 0 rcx 0xffff8000ffff3200 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa6a1da944511b2bb r11 0xc13c5646552d9159 r12 0xffff8000299eebd0 r13 0 r14 0 r15 0x1 rip 0xffffffff81ae88d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a2f9e50 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=408595 pid=93896 tcnt=4 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff2530,0xffff8000ffff22b0 process=0xffff80003c47e568 user=0xffff80002a2f5000, vmspace=0xfffffd806bad5d48 estcpu=36, cpticks=1, pctcpu=0.0, user=1, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *93896 408595 40113 0 7 0 syz-executor 93896 244513 40113 0 3 0x4000080 fsleep syz-executor 93896 290084 40113 0 3 0x4000000 biowait syz-executor 93896 209837 40113 0 3 0x4000000 uobjlk syz-executor 62608 501740 95378 0 2 0 syz-executor 57025 432314 12568 0 2 0 syz-executor 57025 53924 12568 0 2 0x4000000 syz-executor 44952 181132 45966 0 7 0 syz-executor 44952 29930 45966 0 3 0x4000080 fsleep syz-executor 41962 324814 86235 0 2 0 syz-executor 41962 356139 86235 0 2 0x4000000 syz-executor 11409 392751 52823 60928 2 0x10 syz-executor 11409 173326 52823 60928 2 0x4000010 syz-executor 42479 295934 1 0 3 0x100083 ttyin getty 95378 300542 60761 0 3 0x82 nanoslp syz-executor 86235 177345 60761 0 3 0x82 nanoslp syz-executor 52823 467173 60761 0 3 0x82 nanoslp syz-executor 12568 257950 60761 0 3 0x82 nanoslp syz-executor 27356 452231 0 0 3 0x14200 bored sosplice 45966 524188 60761 0 3 0x82 nanoslp syz-executor 51363 109830 60761 0 3 0x2 biowait syz-executor 79617 102884 60761 0 3 0x82 nanoslp syz-executor 40113 81984 60761 0 3 0x82 nanoslp syz-executor 60761 224847 83096 0 3 0x82 kqread syz-executor 83096 324087 95246 0 3 0x10008a sigsusp ksh 95246 479245 3061 0 3 0x98 kqread sshd-session 3061 305149 21366 0 3 0x92 kqread sshd-session 21366 505902 1 0 3 0x88 kqread sshd 39006 433129 86006 74 3 0x1100092 bpf pflogd 86006 144099 1 0 3 0x80 sbwait pflogd 57448 430542 90576 73 3 0x1100090 kqread syslogd 90576 495877 1 0 3 0x100082 sbwait syslogd 30346 182837 1 0 3 0x100080 kqread resolvd 14824 425276 50571 77 3 0x100092 kqread dhcpleased 92702 131758 50571 77 3 0x100092 kqread dhcpleased 50571 281466 1 0 3 0x80 kqread dhcpleased 34265 176813 0 0 3 0x14200 bored smr 12230 362773 0 0 2 0x14200 zerothread 83798 117838 0 0 3 0x14200 aiodoned aiodoned 15222 327648 0 0 3 0x14200 syncer update 5125 53084 0 0 3 0x14200 cleaner cleaner 92583 504566 0 0 3 0x14200 reaper reaper 40093 182863 0 0 3 0x14200 pgdaemon pagedaemon 60778 60920 0 0 3 0x14200 bored viomb 62055 376835 0 0 3 0x40014200 acpi0 acpi0 5138 133295 0 0 3 0x40014200 idle1 34032 37797 0 0 3 0x14200 bored softnet3 55834 478746 0 0 3 0x14200 bored softnet2 24107 503584 0 0 3 0x14200 bored softnet1 75295 382604 0 0 3 0x14200 bored softnet0 42986 414393 0 0 3 0x14200 bored systqmp 80713 14237 0 0 3 0x14200 bored systq 59956 453802 0 0 3 0x14200 tmoslp softclockmp 74087 66805 0 0 3 0x40014200 tmoslp softclock 53235 514090 0 0 3 0x40014200 idle0 1 330491 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83914d28) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 93896 (syz-executor) thread 0xffff8000ffff3200 (408595) Process 93896 (syz-executor) thread 0xffff8000ffff22a0 (244513) Process 93896 (syz-executor) thread 0xffff8000fffe9218 (290084) Process 41962 (syz-executor) thread 0xffff80003c503c68 (356139) Process 11409 (syz-executor) thread 0xffff80003c502d08 (173326) Process 51363 (syz-executor) thread 0xffff80002a2b59b8 (109830) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10230 11056K 11968K 166960K 16086 0 pcb 17 16K 18K 166960K 633 0 rtable 248 10K 11K 166960K 711 0 pf 39 18K 21K 166960K 170 0 ifaddr 42 7K 8K 166960K 119 0 ifgroup 60 2K 3K 166960K 199 0 sysctl 4 1K 2K 166960K 8 0 counters 66 36K 37K 166960K 198 0 ioctlops 0 0K 4K 166960K 1956 0 iov 0 0K 28K 166960K 228 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1519 95K 96K 166960K 4333 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 52K 88K 166960K 62 0 VM map 2 1K 1K 166960K 2 0 sem 24 6K 6K 166960K 75 0 dirhash 12 2K 3K 166960K 69 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 106K 166960K 2428 0 sigio 1 0K 0K 166960K 77 0 proc 72 91K 128K 166960K 914 0 subproc 72 4K 4K 166960K 110 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 417 0 in_multi 90 6K 7K 166960K 221 0 ether_multi 1 0K 0K 166960K 21 0 mrt 1 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 990 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 172K 187K 166960K 23508 0 UVM aobj 69 6K 6K 166960K 82 0 pinsyscall 42 84K 101K 166960K 3641 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 118 0 NDP 13 0K 2K 166960K 81 0 temp 78 8692K 8948K 166960K 97915 0 kqueue 14 22K 33K 166960K 382 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 281 0 278 4 3 1 3 0 8 0 rtentry 176 202 0 94 6 0 6 6 0 8 0 unpcb 144 1688 0 1667 10 9 1 6 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 833 0 829 22 19 3 8 0 8 2 arp 128 33 0 15 1 0 1 1 0 8 0 inpcb 384 2775 0 2768 41 37 4 12 0 8 3 nd6 144 43 0 18 1 0 1 1 0 8 0 pkpcb 40 12 0 12 7 7 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 47 0 47 7 7 0 1 0 8 0 pppxif 1504 11 0 11 6 6 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 13 0 11 1 0 1 1 0 482 0 pffrnode 88 13 0 11 1 0 1 1 0 8 0 pffrent 40 50 0 48 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 1 1 1 0 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 157 0 103 1 0 1 1 0 8 0 pfstkey 128 160 0 106 3 0 3 3 0 8 0 pfstate 384 159 0 105 8 0 8 8 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 726 0 292 32 4 28 29 0 8 0 art_table 32 730 0 292 4 0 4 4 0 8 0 art_node 16 195 0 98 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 66 0 44 1 0 1 1 0 8 0 shmpl 112 79 0 13 2 0 2 2 0 8 0 dirhash 1024 55 0 38 3 0 3 3 0 8 0 dino2pl 256 5894 0 4390 96 0 96 96 0 8 0 ffsino 288 5895 0 4390 109 0 109 109 0 8 0 nchpl 144 9254 0 7553 64 0 64 64 0 8 0 rtmask 32 6 0 6 4 4 0 1 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 35287 0 35284 5 4 1 3 0 8 0 percpumem 16 113 0 66 1 0 1 1 0 8 0 kstatmem 264 114 0 88 4 2 2 3 0 8 0 scsiplug 72 7 0 7 5 5 0 1 0 8 0 scxspl 216 32495 0 32492 14 13 1 8 1 8 0 plimitpl 152 755 0 738 1 0 1 1 0 8 0 sigapl 424 2750 0 2700 10 4 6 9 0 8 0 futexpl 64 34346 0 34344 1 0 1 1 0 8 0 knotepl 120 583 0 0 16 0 16 16 0 8 0 kqueuepl 224 927 0 915 14 13 1 5 0 8 0 pipepl 336 612 0 584 16 13 3 8 0 8 0 fdescpl 520 2704 0 2673 3 0 3 3 0 8 0 filepl 160 20151 0 19927 39 27 12 21 0 8 0 lockfpl 104 1090 0 1086 2 1 1 2 0 8 0 lockfspl 48 388 0 384 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 92 0 75 1 0 1 1 0 8 0 ucredpl 104 3016 0 3002 1 0 1 1 0 8 0 zombiepl 144 3222 0 3221 1 0 1 1 0 8 0 processpl 1192 2750 0 2700 6 0 6 6 0 8 0 procpl 656 6430 0 6373 8 1 7 8 0 8 0 srpgc 96 8 0 8 4 4 0 1 0 8 0 sosppl 168 16 0 16 5 5 0 1 0 8 0 sockpl 728 4787 0 4756 45 40 5 16 0 8 2 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 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 127 0 0 16 0 16 16 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 371 0 0 9 0 9 9 0 8 0 mbufpl 256 1429 0 0 88 1 87 88 0 8 0 bufpl 280 10261 0 4118 440 0 440 440 0 8 0 anonpl 24 345483 0 338650 129 62 67 74 0 184 13 amapchunkpl 152 78148 0 77576 48 22 26 31 0 158 0 amappl16 200 6605 0 6448 65 44 21 22 0 8 8 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 123 0 111 1 0 1 1 0 8 0 amappl13 176 6 0 6 3 3 0 1 0 8 0 amappl12 168 3445 0 3414 3 1 2 2 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 6 0 6 2 2 0 1 0 8 0 amappl9 144 267 0 266 2 1 1 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 148 0 135 1 0 1 1 0 8 0 amappl6 120 219 0 215 1 0 1 1 0 8 0 amappl5 112 140 0 130 1 0 1 1 0 8 0 amappl4 104 345 0 323 1 0 1 1 0 8 0 amappl3 96 16651 0 16538 5 1 4 4 0 8 0 amappl2 88 718 0 655 2 0 2 2 0 8 0 amappl1 80 17730 0 17133 15 2 13 14 0 8 0 amappl 88 22211 0 22038 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 5 0 5 3 3 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 2 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 8 0 8 2 2 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 81 0 13 2 0 2 2 0 8 0 uaddrrnd 24 2704 0 2673 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2704 0 2673 1 0 1 1 0 8 0 vmmpekpl 168 21540 0 21488 5 1 4 4 0 8 0 vmmpepl 168 169211 0 167079 138 31 107 107 0 357 6 vmsppl 480 2703 0 2673 6 2 4 5 0 8 0 rwobjpl 72 47107 0 40046 136 2 134 134 0 8 2 pdppl 4096 5415 0 5346 137 66 71 83 0 8 2 pvpl 32 20024 0 0 161 0 161 161 0 265 0 pmappl 256 2703 0 2673 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 550 0 118 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83883ff0) 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+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(ffffffff8396cb28) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8396cb28) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a3003f0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:159 rw_exit_write(fffffd8009ed2a48) at rw_exit_write+0x25 sys/kern/kern_rwlock.c:-1 uvm_map_protect(fffffd8009ed2960,89248e1f000,8924921e000,1,0,0,410cb2c6226b71b2) at uvm_map_protect+0xf7c vm_map_unlock_ln sys/uvm/uvm_map.c:5293 [inline] uvm_map_protect(fffffd8009ed2960,89248e1f000,8924921e000,1,0,0,410cb2c6226b71b2) at uvm_map_protect+0xf7c sys/uvm/uvm_map.c:3222 sys_mprotect(ffff80003c5034b8,ffff80002a300700,ffff80002a300650) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 syscall(ffff80002a300700) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a300700) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72f27e46f070, count: 2 ddb{0}> trace x86_ipi_db(ffffffff83883ff0) 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+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(ffffffff8396cb28) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8396cb28) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a3003f0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:159 rw_exit_write(fffffd8009ed2a48) at rw_exit_write+0x25 sys/kern/kern_rwlock.c:-1 uvm_map_protect(fffffd8009ed2960,89248e1f000,8924921e000,1,0,0,410cb2c6226b71b2) at uvm_map_protect+0xf7c vm_map_unlock_ln sys/uvm/uvm_map.c:5293 [inline] uvm_map_protect(fffffd8009ed2960,89248e1f000,8924921e000,1,0,0,410cb2c6226b71b2) at uvm_map_protect+0xf7c sys/uvm/uvm_map.c:3222 sys_mprotect(ffff80003c5034b8,ffff80002a300700,ffff80002a300650) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 syscall(ffff80002a300700) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a300700) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72f27e46f070, 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(ffffffff833dda5a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83914d18) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83914d18) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800813e708) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8067c81978,0,ffff80002a2fa118,ffff80002a2fa0f4,0,2,49475cdbceb2be93,ffff80002a2fa370) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa1a0,ffff80002a2fa1a8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa2b0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bad5d48,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002a2fa4c0,2000000001c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2fa4c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x77bd510f9990, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dda5a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83914d18) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83914d18) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800813e708) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800813e708) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8067c81978,0,ffff80002a2fa118,ffff80002a2fa0f4,0,2,49475cdbceb2be93,ffff80002a2fa370) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa1a0,ffff80002a2fa1a8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002a2fa338,ffff80002a2fa370,ffff80002a2fa2b0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bad5d48,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002a2fa4c0,2000000001c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2fa4c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x77bd510f9990, count: -13