uvm_fault(0xfffffd800e7497c0, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8250fed8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003c3f1bf0 gsbase 0xffff8000299bdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8250fed8 Starting stack trace... panic(ffffffff83483ffa) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c3f1b40) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002f3aa558,fffffd800c2e5010,ffff80003c3f1d00) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimens(ffff80002f3aa558,ffff80003c3f1e50,ffff80003c3f1da0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847 syscall(ffff80003c3f1e50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f1e50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9b7b61cf450, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 83 690734128 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 307644 77992 0 0 0 0 syz-executor *311439 59881 0 0 0 1 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x7cf87c54d8a0, count: 14 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd800e7497c0, 0x98, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7cf87c54d8a0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003b3e5f20 rbx 0 rdx 0 rcx 0xffff80002f3ab250 rax 0x3a r8 0xffff80003b3e5e50 r9 0x1 r10 0xd661d71e06adf6f8 r11 0x87e621cccae5e84a r12 0 r13 0 r14 0xffff80002f3ab250 r15 0 rip 0xffffffff811f53ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003b3e5ea0 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=311439 pid=59881 tcnt=2 stat=onproc flags process=0 proc=0 runpri=76, usrpri=76, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f3aa7f0,0xffff80002f3aafc8 process=0xffff80002a39e1c8 user=0xffff80003b3e0000, vmspace=0xfffffd800e7497c0 estcpu=26, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 77992 307644 89042 0 7 0 syz-executor 32943 516207 28376 0 2 0 syz-executor 32943 123074 28376 0 3 0x4000080 fsleep syz-executor 86526 94301 78347 0 2 0 syz-executor 86526 360910 78347 0 3 0x4000080 fsleep syz-executor 95032 411061 49115 60928 3 0x91 nanoslp syz-executor 95032 285360 49115 60928 3 0x4000091 nanoslp syz-executor 95032 190600 49115 60928 3 0x4000091 fsleep syz-executor 95032 468455 49115 60928 3 0x4000091 fsleep syz-executor *59881 311439 85919 0 7 0 syz-executor 59881 125270 85919 0 3 0x4000000 sbar syz-executor 16611 402944 20345 0 2 0 syz-executor 16611 170474 20345 0 3 0x4000080 fsleep syz-executor 16611 80139 20345 0 3 0x4000080 fsleep syz-executor 16611 228839 20345 0 2 0x4000000 syz-executor 28376 76035 75095 0 3 0x82 nanoslp syz-executor 78347 10462 75095 0 3 0x82 nanoslp syz-executor 26505 9301 75095 0 3 0x82 nanoslp syz-executor 49115 497178 75095 0 3 0x82 nanoslp syz-executor 89606 88231 75095 0 3 0x2 biowait syz-executor 85919 466266 75095 0 3 0x82 nanoslp syz-executor 20345 232335 75095 0 3 0x82 nanoslp syz-executor 89042 287997 75095 0 3 0x82 nanoslp syz-executor 75095 237881 15292 0 3 0x82 kqread syz-executor 15292 461040 20557 0 3 0x10008a sigsusp ksh 20557 500194 58790 0 3 0x98 kqread sshd-session 58790 230982 85965 0 3 0x92 kqread sshd-session 90976 212079 1 0 3 0x100083 ttyin getty 85965 411892 1 0 3 0x88 kqread sshd 51753 13558 22298 74 3 0x1100092 bpf pflogd 22298 447250 1 0 3 0x80 sbwait pflogd 88465 288760 13591 73 3 0x1100090 kqread syslogd 13591 340809 1 0 3 0x100082 sbwait syslogd 36445 79683 1 0 3 0x100080 kqread resolvd 64516 374190 51023 77 3 0x100092 kqread dhcpleased 38576 25572 51023 77 3 0x100092 kqread dhcpleased 51023 465175 1 0 3 0x80 kqread dhcpleased 72202 325275 0 0 3 0x14200 bored smr 45467 176327 0 0 2 0x14200 zerothread 56578 261767 0 0 3 0x14200 aiodoned aiodoned 75760 39450 0 0 3 0x14200 syncer update 11704 81340 0 0 3 0x14200 cleaner cleaner 54075 10819 0 0 3 0x14200 reaper reaper 34979 222158 0 0 3 0x14200 pgdaemon pagedaemon 82898 101785 0 0 3 0x14200 bored viomb 81309 433959 0 0 3 0x40014200 acpi0 acpi0 25278 109865 0 0 3 0x40014200 idle1 91048 425488 0 0 3 0x14200 bored softnet1 36478 193117 0 0 3 0x14200 netlock softnet0 24127 314516 0 0 2 0x40014200 systqmp 68603 443221 0 0 3 0x14200 bored systq 30175 413940 0 0 3 0x14200 tmoslp softclockmp 75780 291253 0 0 3 0x40014200 tmoslp softclock 8360 52811 0 0 3 0x40014200 idle0 1 418301 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 77992 (syz-executor) thread 0xffff80003b3d82b8 (307644) exclusive rwlock vmmaplk r = 0 (0xfffffd800e749e78) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_mapanon+0x28f sys/uvm/uvm_map.c:-1 #4 uvm_mmapanon+0x1d0 sys/uvm/uvm_mmap.c:1029 #5 sys_mmap+0xa80 sys/uvm/uvm_mmap.c:426 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 Process 59881 (syz-executor) thread 0xffff80002f3aa558 (125270) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8396a9c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 89606 (syz-executor) thread 0xffff8000fffefa08 (88231) exclusive rrwlock inode r = 0 (0xfffffd806e753ca0) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ca6c430) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11095 12155K 12347K 166960K 12319 0 pcb 19 12K 12K 166960K 41 0 rtable 241 7K 7K 166960K 388 0 pf 36 18K 18K 166960K 55 0 ifaddr 43 7K 7K 166960K 54 0 ifgroup 55 2K 2K 166960K 65 0 sysctl 1 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 80 0 ioctlops 0 0K 4K 166960K 1506 0 iov 0 0K 8K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1303 82K 82K 166960K 1461 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 256 0 proc 72 115K 147K 166960K 598 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 27 0 in_multi 99 7K 7K 166960K 112 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 7 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 398 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 234 167K 184K 166960K 4197 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 42 84K 106K 166960K 1429 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 12 0K 2K 166960K 34 0 temp 37 9078K 9146K 166960K 6472 0 kqueue 16 26K 28K 166960K 44 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 71 0 68 2 0 2 2 0 8 1 rtentry 176 122 0 12 6 0 6 6 0 8 0 unpcb 144 93 0 74 2 0 2 2 0 8 1 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 38 0 34 1 0 1 1 0 8 0 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 184 0 173 2 0 2 2 0 8 0 nd6 152 27 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 4 0 4 1 0 1 1 0 8 1 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pffrag 232 3 0 1 1 0 1 1 0 482 0 pffrnode 88 3 0 1 1 0 1 1 0 8 0 pffrent 40 4 0 2 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfstitem 24 31 0 0 1 0 1 1 0 8 0 pfstkey 128 34 0 3 1 0 1 1 0 8 0 pfstate 448 33 0 2 4 0 4 4 0 8 0 pfrule 1360 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 256 496 0 44 29 0 29 29 0 8 0 art_table 40 497 0 44 5 0 5 5 0 8 0 art_node 32 122 0 22 1 0 1 1 0 8 0 semapl 112 5 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1765 0 291 93 0 93 93 0 8 0 ffsino 296 1765 0 291 114 0 114 114 0 8 0 nchpl 144 2099 0 389 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 1917 0 0 107 0 107 107 0 8 0 namei 1024 6727 0 6727 1 0 1 1 0 8 1 percpumem 16 55 0 5 1 0 1 1 0 8 0 kstatmem 264 34 0 8 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7310 0 7309 10 2 8 8 1 8 7 plimitpl 152 42 0 23 1 0 1 1 0 8 0 sigapl 424 568 0 521 7 0 7 7 0 8 1 knotepl 120 333 0 0 11 0 11 11 0 8 0 kqueuepl 224 48 0 35 1 0 1 1 0 8 0 pipepl 344 134 0 107 3 0 3 3 0 8 0 fdescpl 528 552 0 521 3 0 3 3 0 8 0 filepl 160 2349 0 2126 14 0 14 14 0 8 4 lockfpl 104 51 0 49 1 0 1 1 0 8 0 lockfspl 48 22 0 20 1 0 1 1 0 8 0 sessionpl 144 30 0 20 1 0 1 1 0 8 0 pgrppl 48 42 0 24 1 0 1 1 0 8 0 ucredpl 104 298 0 284 1 0 1 1 0 8 0 zombiepl 144 522 0 521 1 0 1 1 0 8 0 processpl 1232 568 0 521 5 0 5 5 0 8 1 procpl 664 772 0 716 6 0 6 6 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 355 0 322 8 0 8 8 0 8 4 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 11 0 0 2 0 2 2 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 224 0 0 14 0 14 14 0 8 0 bufpl 280 2472 0 107 169 0 169 169 0 8 0 anonpl 32 7751 0 0 64 1 63 64 0 246 0 amapchunkpl 152 12477 0 12003 30 0 30 30 0 158 8 amappl16 200 2208 0 2182 13 2 11 11 0 8 8 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 441 0 439 1 0 1 1 0 8 0 amappl13 176 140 0 128 1 0 1 1 0 8 0 amappl12 168 807 0 777 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 69 0 55 1 0 1 1 0 8 0 amappl9 144 268 0 268 1 1 0 1 0 8 0 amappl8 136 140 0 138 1 0 1 1 0 8 0 amappl7 128 148 0 134 1 0 1 1 0 8 0 amappl6 120 170 0 169 1 0 1 1 0 8 0 amappl5 112 95 0 84 1 0 1 1 0 8 0 amappl4 104 291 0 273 1 0 1 1 0 8 0 amappl3 96 2203 0 2089 4 0 4 4 0 8 0 amappl2 88 540 0 479 2 0 2 2 0 8 0 amappl1 80 10287 0 9684 18 2 16 17 0 8 2 amappl 88 3438 0 3277 5 0 5 5 0 92 0 uvmvnodes 80 103 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 552 0 521 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 552 0 521 1 0 1 1 0 8 0 vmmpekpl 168 6448 0 6406 3 0 3 3 0 8 0 vmmpepl 168 43868 0 41963 104 0 104 104 0 357 8 vmsppl 488 551 0 521 5 0 5 5 0 8 0 rwobjpl 80 15794 0 14764 29 0 29 29 0 8 3 pdppl 4096 1111 0 1042 101 26 75 83 0 8 6 pvpl 32 15145 0 0 123 0 123 123 0 265 0 pmappl 256 551 0 521 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 277 0 29 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83916ff0) 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 __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff800037bdac10,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f witness_assert(fffffd800e749e78,4) at witness_assert+0x41c sys/kern/subr_witness.c:2091 uvm_mapent_free_insert(fffffd800e749d78,fffffd80097fcba0,fffffd806c5044b8) at uvm_mapent_free_insert+0xc0 sys/uvm/uvm_map.c:369 uvm_map_fix_space(fffffd800e749d78,fffffd806c5044b8,a291ad5f000,a292182f000,80713) at uvm_map_fix_space+0x5a3 sys/uvm/uvm_map.c:4993 uvm_map_mkentry(fffffd800e749d78,fffffd806c218660,fffffd806c218660,a291ad5c000,3000,80713,7b0cc2a736760a8f,0) at uvm_map_mkentry+0x3c0 sys/uvm/uvm_map.c:1476 end trace frame: 0xffff800037bdaf90, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83916ff0) 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 __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff800037bdac10,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f witness_assert(fffffd800e749e78,4) at witness_assert+0x41c sys/kern/subr_witness.c:2091 uvm_mapent_free_insert(fffffd800e749d78,fffffd80097fcba0,fffffd806c5044b8) at uvm_mapent_free_insert+0xc0 sys/uvm/uvm_map.c:369 uvm_map_fix_space(fffffd800e749d78,fffffd806c5044b8,a291ad5f000,a292182f000,80713) at uvm_map_fix_space+0x5a3 sys/uvm/uvm_map.c:4993 uvm_map_mkentry(fffffd800e749d78,fffffd806c218660,fffffd806c218660,a291ad5c000,3000,80713,7b0cc2a736760a8f,0) at uvm_map_mkentry+0x3c0 sys/uvm/uvm_map.c:1476 uvm_mapanon(fffffd800e749d78,ffff800037bdb108,3000,1000,80713) at uvm_mapanon+0x917 sys/uvm/uvm_map.c:-1 uvm_mmapanon(fffffd800e749d78,ffff800037bdb108,3000,3,7,1002,92e4f65b61d04463,fffffd800e749d78) at uvm_mmapanon+0x1d0 sys/uvm/uvm_mmap.c:1029 sys_mmap(ffff80003b3d82b8,ffff800037bdb270,ffff800037bdb1c0) at sys_mmap+0xa80 sys/uvm/uvm_mmap.c:426 syscall(ffff800037bdb270) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037bdb270) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7916f2956390, count: -19 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7cf87c54d8a0, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7cf87c54d8a0, count: -1