uvm_fault(0xfffff28073086020, 0x7fff0000800f, 0, 1) -> e kernel: page fault trap, code=0 Stopped at amap_copy+0x570: movl 0x10(%r14),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND *234477 72691 32767 0x10 0 1 syz-executor 353434 38573 32767 0x10 0 0 syz-executor amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637 uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747 uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x785b0a3f6980, count: 9 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: uvm_fault(0xfffff28073086020, 0x7fff0000800f, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637 uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747 uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x785b0a3f6980, count: -6 ddb{1}> show registers rdi 0x11 rsi 0x22 rbp 0xffff80002a30c2e0 rbx 0x22 rdx 0 rcx 0x1 rax 0xffff800001593f20 r8 0x98 r9 0x30698e73001 r10 0x9dc9a8dc9019666d r11 0x46c12baa4637a612 r12 0x22 r13 0x1 r14 0x7fff00007fff r15 0x10 rip 0xffffffff8270a180 amap_copy+0x570 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80002a30c230 ss 0 amap_copy+0x570: movl 0x10(%r14),%ebx ddb{1}> show proc PROC (syz-executor) tid=234477 pid=72691 tcnt=1 stat=onproc flags process=10 proc=0 runpri=50, usrpri=50, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a7dcd20,0xffff80003a7dda28 process=0xffff800045fe9358 user=0xffff80002a307000, vmspace=0xfffff28073086020 estcpu=9, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *72691 234477 70883 32767 7 0x10 0 syz-executor 38573 353434 12471 32767 7 0x10 0 syz-executor 38573 81488 12471 32767 2 0x10 0x4000000 syz-executor 43673 248223 7038 32767 2 0x10 0 syz-executor 43673 273158 7038 32767 3 0x10 0x4000080 fsleep syz-executor 43673 141925 7038 32767 3 0x10 0x4000080 fsleep syz-executor 43673 136074 7038 32767 3 0x10 0x4000080 fsleep syz-executor 23846 295326 31171 32767 2 0x10 0 syz-executor 23846 428369 31171 32767 3 0x10 0x4000080 fsleep syz-executor 23846 195481 31171 32767 3 0x10 0x4000080 fsleep syz-executor 23846 497840 31171 32767 3 0x10 0x4000080 fsleep syz-executor 99270 115940 6883 0 2 0x2 0 syz-executor 70883 64563 14235 32767 3 0x10 0x80 nanoslp syz-executor 65524 466340 532 32767 2 0x10 0 syz-executor 20597 259575 15114 32767 3 0x10 0x80 nanoslp syz-executor 31171 362701 17948 32767 3 0x10 0x80 nanoslp syz-executor 7038 78450 12345 32767 3 0x10 0x80 nanoslp syz-executor 12471 137476 68824 32767 3 0x10 0x80 nanoslp syz-executor 16114 412185 30052 32767 2 0x10 0 syz-executor 15114 413434 6883 0 3 0x2 0x80 wait syz-executor 14235 198861 6883 0 3 0x2 0x80 wait syz-executor 532 58548 6883 0 3 0x2 0x80 wait syz-executor 17948 314037 6883 0 3 0x2 0x80 wait syz-executor 12345 483699 6883 0 3 0x2 0x80 wait syz-executor 30052 42868 6883 0 3 0x2 0x80 wait syz-executor 68824 497419 6883 0 3 0x2 0x80 wait syz-executor 6883 176187 7112 0 3 0x2 0x80 kqread syz-executor 7112 307468 5598 0 3 0x100002 0x88 sigsusp ksh 5598 116840 83402 0 3 0x10 0x88 kqread sshd-session 83402 451979 99555 0 3 0x12 0x80 kqread sshd-session 79744 229092 1 0 3 0x100003 0x80 ttyin getty 99555 477999 1 0 3 0 0x88 kqread sshd 50386 143345 70968 73 3 0x1100010 0x80 kqread syslogd 70968 309401 1 0 3 0x100002 0x80 sbwait syslogd 87188 325236 1 0 3 0x100000 0x80 kqread resolvd 38749 434797 7134 77 3 0x100012 0x80 kqread dhcpleased 67487 338192 7134 77 3 0x100012 0x80 kqread dhcpleased 7134 156978 1 0 3 0 0x80 kqread dhcpleased 5072 196315 0 0 3 0x14000 0x200 bored smr 95032 360565 0 0 3 0x14000 0x200 pgzero zerothread 41456 224767 0 0 3 0x14000 0x200 aiodoned aiodoned 39330 423921 0 0 3 0x14000 0x200 syncer update 81520 210387 0 0 3 0x14000 0x200 cleaner cleaner 17455 285236 0 0 3 0x14000 0x200 reaper reaper 16418 505306 0 0 3 0x14000 0x200 pgdaemon pagedaemon 54173 50032 0 0 3 0x14000 0x200 bored viomb 10628 469372 0 0 3 0x14000 0x40000200 acpi0 acpi0 47664 118193 0 0 3 0x14000 0x40000200 idle1 35396 6162 0 0 3 0x14000 0x200 bored softnet1 82271 85450 0 0 3 0x14000 0x200 bored softnet0 50737 77855 0 0 3 0x14000 0x200 bored systqmp 22293 305774 0 0 3 0x14000 0x200 bored systq 85289 170910 0 0 3 0x14000 0x200 tmoslp softclockmp 49494 177818 0 0 3 0x14000 0x40000200 tmoslp softclock 5134 79688 0 0 3 0x14000 0x40000200 idle0 1 346078 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 72691 (syz-executor) thread 0xffff80003a7dca88 (234477) exclusive rwlock amaplk r = 0 (0xfffff2806e20d180) #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 amap_copy+0x28b sys/uvm/uvm_amap.c:606 #3 uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 exclusive rwlock vmmaplk r = 0 (0xfffff28073086120) #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+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 Process 65524 (syz-executor) thread 0xffff800045fe7778 (466340) exclusive rrwlock inode r = 0 (0xfffff28065d23690) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff2806d803e98) #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+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #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 Process 16114 (syz-executor) thread 0xffff800045fee2b0 (412185) exclusive rrwlock inode r = 0 (0xfffff28065d23440) #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:692 #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+0x963 sys/kern/vfs_lookup.c:580 #11 namei+0x7c5 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #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 (0xfffff2806d4c59f0) #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+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #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 11046 12016K 12034K 166960K 12140 0 pcb 17 12K 12K 166960K 17 0 rtable 215 6K 7K 166960K 347 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 4 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 2K 166960K 33 0 iov 0 0K 4K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1287 81K 81K 166960K 1393 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 22 78K 121K 166960K 217 0 sigio 0 0K 0K 166960K 1 0 proc 58 99K 131K 166960K 505 0 subproc 63 3K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 10 0 in_multi 88 6K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 376 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 223 151K 169K 166960K 3548 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 43 86K 110K 166960K 1289 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 10 0K 2K 166960K 27 0 temp 32 9118K 9122K 166960K 3900 0 kqueue 15 24K 24K 166960K 38 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 35 0 32 1 0 1 1 0 8 0 rtentry 176 111 0 12 5 0 5 5 0 8 0 unpcb 144 60 0 45 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 30 0 26 2 0 2 2 0 8 1 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 110 0 103 2 0 2 2 0 8 1 nd6 152 24 0 3 1 0 1 1 0 8 0 kcovpl 48 12 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 44 29 0 29 29 0 8 0 art_table 40 453 0 44 5 0 5 5 0 8 0 art_node 32 111 0 21 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 72 4 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1639 0 171 92 0 92 92 0 8 0 ffsino 296 1639 0 171 114 0 114 114 0 8 0 nchpl 144 1914 0 218 64 0 64 64 0 8 0 vnodes 216 1756 0 0 98 0 98 98 0 8 0 namei 1024 5723 0 5722 2 0 2 2 0 8 1 percpumem 16 51 0 1 1 0 1 1 0 8 0 kstatmem 264 25 0 2 2 0 2 2 0 8 0 scxspl 216 6857 0 6857 9 1 8 8 1 8 8 plimitpl 152 49 0 26 2 0 2 2 0 8 1 sigapl 424 498 0 448 7 0 7 7 0 8 0 knotepl 120 128 0 0 4 0 4 4 0 8 0 kqueuepl 224 39 0 28 1 0 1 1 0 8 0 pipepl 344 140 0 112 3 0 3 3 0 8 0 fdescpl 528 482 0 448 3 0 3 3 0 8 0 filepl 160 1744 0 1548 10 0 10 10 0 8 0 lockfpl 104 41 0 39 1 0 1 1 0 8 0 lockfspl 48 12 0 10 1 0 1 1 0 8 0 sessionpl 144 29 0 14 1 0 1 1 0 8 0 pgrppl 48 43 0 20 1 0 1 1 0 8 0 ucredpl 104 158 0 140 1 0 1 1 0 8 0 zombiepl 144 449 0 448 1 0 1 1 0 8 0 processpl 1232 498 0 448 5 0 5 5 0 8 0 procpl 664 587 0 530 6 0 6 6 0 8 0 sockpl 752 205 0 180 5 0 5 5 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 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 132 0 0 17 0 17 17 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mextrefs 64 26 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 212 0 0 14 0 14 14 0 8 0 bufpl 272 2312 0 102 148 0 148 148 0 8 0 anonpl 32 9427 0 0 76 0 76 76 0 247 0 amapchunkpl 152 10183 0 9704 29 0 29 29 0 158 6 amappl16 200 1920 0 1904 14 4 10 14 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 398 0 397 1 0 1 1 0 8 0 amappl13 176 113 0 102 1 0 1 1 0 8 0 amappl12 168 710 0 679 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 1 0 1 0 8 0 amappl10 152 59 0 48 1 0 1 1 0 8 0 amappl9 144 275 0 275 1 1 0 1 0 8 0 amappl8 136 90 0 89 1 0 1 1 0 8 0 amappl7 128 138 0 127 1 0 1 1 0 8 0 amappl6 120 149 0 148 1 0 1 1 0 8 0 amappl5 112 88 0 81 1 0 1 1 0 8 0 amappl4 104 250 0 236 1 0 1 1 0 8 0 amappl3 96 1762 0 1649 5 1 4 4 0 8 0 amappl2 88 504 0 450 2 0 2 2 0 8 0 amappl1 80 10419 0 9851 14 0 14 14 0 8 0 amappl 88 2866 0 2705 5 0 5 5 0 92 0 uvmvnodes 80 96 0 0 2 0 2 2 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 482 0 448 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 482 0 448 1 0 1 1 0 8 0 vmmpekpl 168 5804 0 5761 2 0 2 2 0 8 0 vmmpepl 168 39753 0 37870 102 0 102 102 0 357 14 vmsppl 488 481 0 448 7 1 6 6 0 8 0 rwobjpl 80 14687 0 13766 25 0 25 25 0 8 2 pdppl 4096 971 0 896 105 24 81 95 0 8 6 pvpl 32 15333 0 0 124 0 124 124 0 265 0 pmappl 256 481 0 448 4 1 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 428 0 27 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83978ff0) 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 end of kernel end trace frame: 0x758925f83b00, count: 12 ddb{0}> trace x86_ipi_db(ffffffff83978ff0) 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 end of kernel end trace frame: 0x758925f83b00, count: -3 ddb{0}> machine ddbcpu 1 Stopped at amap_copy+0x570: movl 0x10(%r14),%ebx amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637 uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747 uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x785b0a3f6980, count: 9 ddb{1}> trace amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637 uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747 uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x785b0a3f6980, count: -6