panic: kmmaplk rwlock 0xffffffff83a01400: enter read deadlock Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *515187 30752 0 0x100002 0 0 sh db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b9f5a) at panic+0x1cf sys/kern/subr_prf.c:198 rw_do_enter_read(ffffffff83a01400,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379 uvmfault_lookup(ffff80002a802ec0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 uvm_fault_check(ffff80002a802ec0,ffff80002a802ef8,ffff80002a802f30,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 uvm_fault(ffffffff83a01318,ffff800029f06000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627 kpageflttrap(ffff80002a803060,ffff800029f06000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1 kerntrap(ffff80002a803060) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b kcov_remote_enter(0,ffff8000ffff5fa0) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83882930,ffff80003c9b3d50) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80003c9b3d50,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 end trace frame: 0xffff80002a8032b0, count: 0 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: kmmaplk rwlock 0xffffffff83a01400: enter read deadlock ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b9f5a) at panic+0x1cf sys/kern/subr_prf.c:198 rw_do_enter_read(ffffffff83a01400,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379 uvmfault_lookup(ffff80002a802ec0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 uvm_fault_check(ffff80002a802ec0,ffff80002a802ef8,ffff80002a802f30,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 uvm_fault(ffffffff83a01318,ffff800029f06000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627 kpageflttrap(ffff80002a803060,ffff800029f06000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1 kerntrap(ffff80002a803060) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b kcov_remote_enter(0,ffff8000ffff5fa0) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83882930,ffff80003c9b3d50) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80003c9b3d50,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 uvm_mapent_tryjoin(ffffffff83a01318,ffff80002a8034b0,6000) at uvm_mapent_tryjoin+0xb sys/uvm/uvm_map.c:1317 km_alloc(6000,ffffffff8368dac8,ffffffff8370a640,ffffffff8370a6b8) at km_alloc+0x209 sys/uvm/uvm_km.c:628 uvm_uarea_alloc() at uvm_uarea_alloc+0x52 sys/uvm/uvm_glue.c:-1 fork1(ffff80003c91a020,1,ffffffff81f74f20,0,ffff80002a803630,0) at fork1+0x311 sys/kern/kern_fork.c:395 syscall(ffff80002a8036e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8036e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71a66546cf60, count: -22 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a802bc0 rbx 0xffff800029f06000 rdx 0 rcx 0 rax 0xffff80003c91a020 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3b649dd7d0dbe925 r11 0xf226dda30d241ef1 r12 0 r13 0xffff80003c91a024 r14 0 r15 0x1 rip 0xffffffff82330ce5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a802bb0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (sh) tid=515187 pid=30752 tcnt=1 stat=onproc flags process=100002 proc=0 runpri=78, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7562a0,0xffff80003c91a2c8 process=0xffff8000ffff8918 user=0xffff80002a7fe000, vmspace=0xfffffd806cd08a20 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 55567 172479 81010 0 3 0x80 nanoslp syz-executor 55567 297180 81010 0 3 0x4000080 fsleep syz-executor 55567 276722 81010 0 3 0x4000080 fsleep syz-executor 55567 257735 81010 0 3 0x4000080 fsleep syz-executor 36090 229902 9380 0 2 0 syz-executor 36090 516422 9380 0 3 0x4000080 bell syz-executor 50282 34211 90699 0 2 0 syz-executor 50282 490663 90699 0 3 0x4000080 fsleep syz-executor 50282 3620 90699 0 3 0x4000080 fsleep syz-executor *30752 515187 90209 0 7 0x100002 sh 22816 49858 92795 0 2 0 syz-executor 22816 37577 92795 0 3 0x4000080 fsleep syz-executor 22816 28901 92795 0 3 0x4000080 fsleep syz-executor 22816 275380 92795 0 3 0x4000080 fsleep syz-executor 53463 311227 39018 0 2 0x10 syz-executor 53463 111612 39018 0 3 0x4000090 sbwait syz-executor 53463 122973 39018 0 2 0x4000010 syz-executor 90209 18326 42394 0 3 0x82 wait syz-executor 39018 106170 42394 0 3 0x82 nanoslp syz-executor 56966 405878 0 0 3 0x14200 acct acct 23814 378264 0 0 3 0x14280 nfsidl nfsio 98859 350718 0 0 3 0x14280 nfsidl nfsio 14215 444104 0 0 3 0x14280 nfsidl nfsio 15502 386462 0 0 3 0x14280 nfsidl nfsio 33542 237505 0 0 3 0x14280 nfsidl nfsio 55384 10794 0 0 3 0x14280 nfsidl nfsio 51692 401049 0 0 3 0x14280 nfsidl nfsio 55843 312954 0 0 3 0x14280 nfsidl nfsio 70779 28492 0 0 3 0x14280 nfsidl nfsio 12811 360790 0 0 3 0x14280 nfsidl nfsio 52178 31628 0 0 3 0x14280 nfsidl nfsio 86466 434007 0 0 3 0x14280 nfsidl nfsio 77883 203468 0 0 3 0x14280 nfsidl nfsio 45532 481938 0 0 3 0x14280 nfsidl nfsio 24819 405006 0 0 3 0x14280 nfsidl nfsio 76403 123378 0 0 3 0x14280 nfsidl nfsio 44801 40503 0 0 3 0x14280 nfsidl nfsio 60135 504441 0 0 3 0x14280 nfsidl nfsio 55403 390978 0 0 3 0x14280 nfsidl nfsio 42772 398461 0 0 3 0x14280 nfsidl nfsio 63905 247961 42394 0 3 0x82 nanoslp syz-executor 9380 332644 42394 0 3 0x82 nanoslp syz-executor 92795 203046 42394 0 3 0x82 nanoslp syz-executor 81010 177619 42394 0 3 0x82 nanoslp syz-executor 90699 347262 42394 0 3 0x82 nanoslp syz-executor 42394 325045 25915 0 3 0x82 wait syz-executor 25915 73316 38480 0 3 0x10008a sigsusp ksh 38480 211624 96343 0 3 0x98 kqread sshd-session 96343 241452 40037 0 3 0x92 kqread sshd-session 6258 248451 1 0 3 0x100083 ttyin getty 40037 51820 1 0 3 0x88 kqread sshd 37438 407810 19865 73 3 0x1100090 kqread syslogd 19865 406729 1 0 3 0x100082 sbwait syslogd 69638 18104 1 0 3 0x100080 kqread resolvd 71076 261522 79080 77 3 0x100092 kqread dhcpleased 74209 64513 79080 77 3 0x100092 kqread dhcpleased 79080 226018 1 0 3 0x80 kqread dhcpleased 58187 241773 0 0 3 0x14200 bored smr 33832 441621 0 0 2 0x14200 zerothread 97562 286089 0 0 3 0x14200 aiodoned aiodoned 3873 422168 0 0 3 0x14200 syncer update 36809 299647 0 0 3 0x14200 cleaner cleaner 90232 88377 0 0 3 0x14200 reaper reaper 26584 391345 0 0 3 0x14200 pgdaemon pagedaemon 37755 400763 0 0 3 0x14200 bored viomb 64958 5782 0 0 3 0x40014200 acpi0 acpi0 84970 199401 0 0 3 0x14200 bored softnet0 63600 94191 0 0 3 0x14200 smrbar systqmp 7303 243981 0 0 3 0x14200 syncxs systq 11313 317037 0 0 3 0x40014200 tmoslp softclock 72433 479857 0 0 3 0x40014200 idle0 1 328536 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11050 12173K 12365K 166960K 12808 0 pcb 17 12K 12K 166960K 78 0 rtable 246 8K 9K 166960K 742 0 pf 37 14K 20K 166960K 114 0 ifaddr 43 7K 8K 166960K 105 0 ifgroup 55 2K 2K 166960K 129 0 sysctl 4 1K 9K 166960K 10 0 counters 35 18K 18K 166960K 61 0 ioctlops 0 0K 4K 166960K 140 0 iov 0 0K 12K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1417 89K 90K 166960K 2118 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 745 0 sigio 0 0K 0K 166960K 7 0 proc 60 59K 100K 166960K 859 0 subproc 72 4K 4K 166960K 171 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 172 0 in_multi 96 7K 7K 166960K 240 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 657 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 226 159K 175K 166960K 7537 0 UVM aobj 12 2K 2K 166960K 14 0 pinsyscall 38 76K 94K 166960K 2129 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 13 0 NDP 14 0K 2K 166960K 71 0 temp 76 9076K 9147K 166960K 24723 0 kqueue 13 20K 28K 166960K 102 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle vscsiccb 40 1 0 0 1 0 1 1 0 8 0 rtpcb 120 154 0 118 2 0 2 2 0 8 0 rtentry 136 240 0 134 4 0 4 4 0 8 0 unpcb 144 617 0 596 7 5 2 6 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 188 0 183 4 3 1 4 0 8 0 arp 96 41 0 23 1 0 1 1 0 8 0 ipq 40 5 0 3 2 1 1 1 0 8 0 ipqe 40 9 0 6 2 1 1 1 0 8 0 inpcb 328 452 0 444 4 2 2 4 0 8 1 nd6 112 58 0 37 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 12 0 11 2 1 1 1 0 8 0 pppxif 1416 3 0 2 1 0 1 1 0 8 0 pfstscr 40 2 0 2 2 1 1 1 0 8 1 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 24 0 21 1 0 1 1 0 8 0 pfstate 384 13 0 11 1 0 1 1 0 8 0 pfrule 1360 4 0 4 2 1 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 986 0 534 32 1 31 31 0 8 2 art_table 40 988 0 534 5 0 5 5 0 8 0 art_node 32 240 0 142 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 12 0 3 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2452 0 978 93 0 93 93 0 8 0 ffsino 256 2452 0 978 93 0 93 93 0 8 0 nchpl 144 3268 0 1530 65 0 65 65 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 vnodes 216 3076 0 0 171 0 171 171 0 8 0 namei 1024 11825 0 11825 1 0 1 1 0 8 1 kstatmem 264 66 0 42 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 12304 0 12303 9 1 8 8 1 8 7 plimitpl 152 195 0 176 1 0 1 1 0 8 0 sigapl 424 1039 0 976 8 0 8 8 0 8 0 knotepl 120 23910 0 23863 16 6 10 16 0 8 8 kqueuepl 184 143 0 133 1 0 1 1 0 8 0 pipepl 304 181 0 154 3 0 3 3 0 8 0 fdescpl 448 1005 0 976 5 1 4 5 0 8 0 filepl 120 5479 0 5226 16 6 10 13 0 8 2 lockfpl 104 229 0 226 1 0 1 1 0 8 0 lockfspl 48 104 0 101 1 0 1 1 0 8 0 sessionpl 144 42 0 34 1 0 1 1 0 8 0 pgrppl 48 62 0 46 1 0 1 1 0 8 0 ucredpl 104 900 0 888 1 0 1 1 0 8 0 zombiepl 144 978 0 976 1 0 1 1 0 8 0 processpl 1152 1039 0 976 5 0 5 5 0 8 0 procpl 664 1713 0 1639 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 1236 0 1171 16 11 5 14 0 8 0 mcl64k 65536 53 0 52 2 1 1 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 8 0 8 2 1 1 1 0 8 1 mcl4k 4096 3155 0 3101 14 5 9 13 0 8 1 mcl2k 2048 725 0 722 5 1 4 4 0 8 3 mtagpl 96 7 0 4 2 1 1 1 0 8 0 mbufpl 256 9771 0 9604 16 0 16 16 0 8 0 bufpl 280 6236 0 103 439 0 439 439 0 8 0 anonpl 24 158568 0 155269 66 21 45 45 0 187 21 amapchunkpl 152 24217 0 23738 40 7 33 33 0 158 13 amappl16 200 2742 0 2713 31 20 11 15 0 8 8 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 545 0 543 1 0 1 1 0 8 0 amappl13 176 135 0 125 1 0 1 1 0 8 0 amappl12 168 1290 0 1262 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 1 0 1 0 8 0 amappl10 152 61 0 51 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 152 0 150 1 0 1 1 0 8 0 amappl7 128 194 0 183 1 0 1 1 0 8 0 amappl6 120 258 0 256 1 0 1 1 0 8 0 amappl5 112 89 0 81 1 0 1 1 0 8 0 amappl4 104 292 0 276 1 0 1 1 0 8 0 amappl3 96 4764 0 4653 3 0 3 3 0 8 0 amappl2 88 670 0 613 2 0 2 2 0 8 0 amappl1 80 12756 0 12206 15 2 13 15 0 8 0 amappl 88 6584 0 6422 4 0 4 4 0 92 0 uvmvnodes 80 108 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 7 0 7 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1005 0 976 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1005 0 976 1 0 1 1 0 8 0 vmmpekpl 168 9160 0 9115 4 1 3 3 0 8 0 vmmpepl 168 70339 0 68574 100 11 89 91 0 357 8 vmsppl 368 1004 0 976 4 1 3 4 0 8 0 rwobjpl 40 21327 0 20343 15 2 13 13 0 8 1 pdppl 4096 2016 0 1952 116 48 68 80 0 8 4 pvpl 32 438815 0 430342 142 36 106 115 0 265 30 pmappl 216 1004 0 976 3 1 2 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 400 0 67 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b9f5a) at panic+0x1cf sys/kern/subr_prf.c:198 rw_do_enter_read(ffffffff83a01400,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379 uvmfault_lookup(ffff80002a802ec0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 uvm_fault_check(ffff80002a802ec0,ffff80002a802ef8,ffff80002a802f30,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 uvm_fault(ffffffff83a01318,ffff800029f06000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627 kpageflttrap(ffff80002a803060,ffff800029f06000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1 kerntrap(ffff80002a803060) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b kcov_remote_enter(0,ffff8000ffff5fa0) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83882930,ffff80003c9b3d50) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80003c9b3d50,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 uvm_mapent_tryjoin(ffffffff83a01318,ffff80002a8034b0,6000) at uvm_mapent_tryjoin+0xb sys/uvm/uvm_map.c:1317 km_alloc(6000,ffffffff8368dac8,ffffffff8370a640,ffffffff8370a6b8) at km_alloc+0x209 sys/uvm/uvm_km.c:628 uvm_uarea_alloc() at uvm_uarea_alloc+0x52 sys/uvm/uvm_glue.c:-1 fork1(ffff80003c91a020,1,ffffffff81f74f20,0,ffff80002a803630,0) at fork1+0x311 sys/kern/kern_fork.c:395 syscall(ffff80002a8036e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8036e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71a66546cf60, count: -22 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b9f5a) at panic+0x1cf sys/kern/subr_prf.c:198 rw_do_enter_read(ffffffff83a01400,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379 uvmfault_lookup(ffff80002a802ec0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 uvm_fault_check(ffff80002a802ec0,ffff80002a802ef8,ffff80002a802f30,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 uvm_fault(ffffffff83a01318,ffff800029f06000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627 kpageflttrap(ffff80002a803060,ffff800029f06000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1 kerntrap(ffff80002a803060) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b kcov_remote_enter(0,ffff8000ffff5fa0) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83882930,ffff80003c9b3d50) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80003c9b3d50,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 uvm_mapent_tryjoin(ffffffff83a01318,ffff80002a8034b0,6000) at uvm_mapent_tryjoin+0xb sys/uvm/uvm_map.c:1317 km_alloc(6000,ffffffff8368dac8,ffffffff8370a640,ffffffff8370a6b8) at km_alloc+0x209 sys/uvm/uvm_km.c:628 uvm_uarea_alloc() at uvm_uarea_alloc+0x52 sys/uvm/uvm_glue.c:-1 fork1(ffff80003c91a020,1,ffffffff81f74f20,0,ffff80002a803630,0) at fork1+0x311 sys/kern/kern_fork.c:395 syscall(ffff80002a8036e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8036e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71a66546cf60, count: -22