*cpu1: uvm_fault(0xffffffff83899a28, 0xffff800026352018, 0, 1) -> d ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7f69a78aa690, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002f8a2760 rbx 0 rdx 0 rcx 0xffff8000ffff27d8 rax 0x3c r8 0xffff80002f8a2690 r9 0 r10 0x59a14877ebf76cda r11 0x6ce86ea2c1b5616a r12 0 r13 0 r14 0xffff8000ffff27d8 r15 0 rip 0xffffffff817de3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002f8a26e0 ss 0x10 savectx+0xae: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-executor) tid=516230 pid=10431 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff2548,0xffff8000ffff2a78 process=0xffff80003c584df0 user=0xffff80002f89d000, vmspace=0xfffffd806bee4570 estcpu=36, cpticks=3, pctcpu=0.0, user=1, sys=1, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *10431 516230 1708 0 7 0 syz-executor 10431 283698 1708 0 3 0x4000080 fsleep syz-executor 7883 161909 33017 0 2 0x1000000 syz-executor 7883 164907 33017 0 3 0x5000080 sbwait syz-executor 7883 193256 33017 0 3 0x5000080 fsleep syz-executor 73831 450276 83721 0 2 0 syz-executor 73831 165254 83721 0 3 0x4000080 kqsel syz-executor 73831 167707 83721 0 3 0x4000080 fsleep syz-executor 7660 228112 81378 0 2 0 syz-executor 7660 206966 81378 0 3 0x4000080 fsleep syz-executor 7660 112864 81378 0 3 0x4000080 kqsel syz-executor 7660 157267 81378 0 3 0x4000080 fsleep syz-executor 72373 259212 1 0 3 0x100083 ttyin getty 81378 160616 3091 0 2 0x2 syz-executor 30648 46489 0 0 3 0x14200 acct acct 33017 166282 3091 0 7 0x3 syz-executor 14996 116433 0 0 3 0x14200 bored sosplice 83721 201715 3091 0 2 0x2 syz-executor 21501 112706 3091 0 3 0x82 wait syz-executor 28443 95441 3091 0 3 0x82 wait syz-executor 16367 330527 3091 0 3 0x82 wait syz-executor 96646 312023 3091 0 2 0x2 syz-executor 1708 111608 3091 0 2 0x482 syz-executor 3091 497135 42258 0 3 0x82 kqread syz-executor 42258 179828 686 0 3 0x10008a sigsusp ksh 686 490748 62685 0 3 0x98 kqread sshd-session 62685 209382 10281 0 3 0x92 kqread sshd-session 10281 495309 1 0 3 0x88 kqread sshd 30340 467019 81760 74 3 0x1100092 bpf pflogd 81760 258049 1 0 3 0x80 sbwait pflogd 72828 24545 70856 73 3 0x1100090 kqread syslogd 70856 342451 1 0 3 0x100082 sbwait syslogd 15001 78410 1 0 3 0x100080 kqread resolvd 1738 208109 45851 77 3 0x100092 kqread dhcpleased 34025 180223 45851 77 3 0x100092 kqread dhcpleased 45851 175350 1 0 3 0x80 kqread dhcpleased 87304 255919 0 0 3 0x14200 bored smr 26666 26214 0 0 3 0x14200 pgzero zerothread 34175 214173 0 0 3 0x14200 aiodoned aiodoned 1576 330071 0 0 3 0x14200 syncer update 40025 5141 0 0 3 0x14200 cleaner cleaner 51687 204024 0 0 3 0x14200 reaper reaper 80344 377368 0 0 3 0x14200 pgdaemon pagedaemon 14059 6316 0 0 3 0x14200 bored viomb 80230 111042 0 0 3 0x40014200 acpi0 acpi0 13641 172965 0 0 3 0x40014200 idle1 13828 138190 0 0 3 0x14200 bored softnet3 82242 383007 0 0 3 0x14200 bored softnet2 93073 182594 0 0 3 0x14200 bored softnet1 31610 99334 0 0 3 0x14200 bored softnet0 28222 317215 0 0 3 0x14200 bored systqmp 24075 76600 0 0 3 0x14200 bored systq 17467 351078 0 0 3 0x14200 tmoslp softclockmp 25112 248506 0 0 3 0x40014200 tmoslp softclock 61844 44566 0 0 3 0x40014200 idle0 1 522565 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806b635308) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_write_protect+0x87 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_write_protect+0x87 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_write_protect+0x87 sys/arch/amd64/amd64/pmap.c:2163 #4 uvm_map_protect+0xbcd pmap_protect machine/pmap.h:482 [inline] #4 uvm_map_protect+0xbcd sys/uvm/uvm_map.c:3184 #5 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 10431 (syz-executor) thread 0xffff8000ffff27d8 (516230) exclusive rwlock uobjlk r = 0 (0xfffffd80712053a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvm_map_protect+0xb6e sys/uvm/uvm_map.c:3184 #3 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 #4 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd806bee4670) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3057 #4 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806b635308) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_write_protect+0x87 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_write_protect+0x87 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_write_protect+0x87 sys/arch/amd64/amd64/pmap.c:2163 #4 uvm_map_protect+0xbcd pmap_protect machine/pmap.h:482 [inline] #4 uvm_map_protect+0xbcd sys/uvm/uvm_map.c:3184 #5 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 33017 (syz-executor) thread 0xffff8000ffff3218 (166282) exclusive rrwlock inode r = 0 (0xfffffd806651c618) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ktrwriteraw+0x172 sys/kern/kern_ktrace.c:688 #7 ktrsyscall+0x32b sys/kern/kern_ktrace.c:183 #8 syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] #8 syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8399b0b8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 ktrsyscall+0x2b3 sys/kern/kern_ktrace.c:183 #2 syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] #2 syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10229 11162K 11431K 166960K 12667 0 pcb 17 14K 16K 166960K 263 0 rtable 200 8K 8K 166960K 474 0 pf 33 17K 19K 166960K 107 0 ifaddr 38 6K 8K 166960K 85 0 ifgroup 51 2K 2K 166960K 132 0 sysctl 4 1K 1K 166960K 8 0 counters 62 36K 37K 166960K 124 0 ioctlops 0 0K 4K 166960K 1556 0 iov 0 0K 24K 166960K 108 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1465 92K 93K 166960K 2295 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 34 0 dirhash 12 2K 2K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 265K 166960K 1090 0 sigio 0 0K 0K 166960K 86 0 proc 73 91K 140K 166960K 752 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 91 0 in_multi 82 6K 7K 166960K 148 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 516 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 239 73K 86K 166960K 11403 0 UVM aobj 24 2K 2K 166960K 28 0 pinsyscall 43 86K 102K 166960K 2210 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 52 0 NDP 11 0K 2K 166960K 57 0 temp 65 8640K 8711K 166960K 40594 0 kqueue 13 20K 32K 166960K 203 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 208 0 205 3 2 1 3 0 8 0 rtentry 112 145 0 58 4 0 4 4 0 8 0 unpcb 144 761 0 742 6 2 4 4 0 8 3 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 400 0 394 9 5 4 7 0 8 3 arp 120 22 0 6 1 0 1 1 0 8 0 inpcb 376 1219 0 1144 16 8 8 11 0 8 0 nd6 136 33 0 14 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1168 20 0 20 1 0 1 1 0 8 1 pppxif 1472 3 0 3 2 1 1 1 0 8 1 pffrag 232 5 0 3 1 0 1 1 0 482 0 pffrnode 88 5 0 3 1 0 1 1 0 8 0 pffrent 40 9 0 7 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 pfstitem 24 69 0 22 1 0 1 1 0 8 0 pfstkey 128 69 0 22 2 0 2 2 0 8 0 pfstate 376 69 0 22 5 0 5 5 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 634 0 235 31 5 26 31 0 8 0 art_table 32 637 0 235 4 0 4 4 0 8 0 art_node 16 142 0 64 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 12 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 30 0 20 1 0 1 1 0 8 0 shmpl 112 25 0 4 1 0 1 1 0 8 0 dirhash 1024 46 0 29 3 0 3 3 0 8 0 dino2pl 256 3391 0 1880 95 0 95 95 0 8 0 ffsino 280 3391 0 1880 109 0 109 109 0 8 0 nchpl 144 4856 0 3173 63 0 63 63 0 8 0 uvmvnodes 80 4053 0 0 83 0 83 83 0 8 0 vnodes 216 4053 0 0 226 0 226 226 0 8 0 namei 1024 16568 0 16568 2 1 1 2 0 8 1 percpumem 16 76 0 31 1 0 1 1 0 8 0 kstatmem 264 74 0 52 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 14498 0 14498 9 2 7 7 1 8 7 plimitpl 152 200 0 182 1 0 1 1 0 8 0 sigapl 424 1381 0 1329 9 0 9 9 0 8 2 futexpl 64 14120 0 14115 1 0 1 1 0 8 0 knotepl 120 557 0 0 17 0 17 17 0 8 0 kqueuepl 216 373 0 361 6 1 5 5 0 8 4 pipepl 328 287 0 260 9 1 8 8 0 8 5 fdescpl 504 1338 0 1306 6 1 5 6 0 8 0 filepl 152 8729 0 8438 16 1 15 15 0 8 3 lockfpl 104 364 0 362 1 0 1 1 0 8 0 lockfspl 48 134 0 132 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 51 0 34 1 0 1 1 0 8 0 ucredpl 104 1243 0 1230 1 0 1 1 0 8 0 zombiepl 144 1333 0 1329 1 0 1 1 0 8 0 processpl 1176 1381 0 1329 6 0 6 6 0 8 0 procpl 656 2891 0 2831 8 0 8 8 0 8 1 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 5 0 5 2 1 1 1 0 8 1 sockpl 688 2206 0 2109 16 4 12 13 0 8 3 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 37 0 0 5 0 5 5 0 8 0 mtagpl 96 36 0 0 1 0 1 1 0 8 0 mbufpl 256 196 0 0 13 0 13 13 0 8 0 bufpl 280 7101 0 947 440 0 440 440 0 8 0 anonpl 24 184952 0 181425 61 5 56 59 0 184 31 amapchunkpl 152 36231 0 35689 29 5 24 28 0 158 2 amappl16 200 3535 0 3493 22 13 9 15 0 8 5 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 121 0 109 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 2014 0 1982 3 1 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 117 0 105 1 0 1 1 0 8 0 amappl6 120 260 0 256 1 0 1 1 0 8 0 amappl5 112 132 0 122 1 0 1 1 0 8 0 amappl4 104 336 0 316 1 0 1 1 0 8 0 amappl3 96 7348 0 7221 4 0 4 4 0 8 0 amappl2 88 698 0 636 2 0 2 2 0 8 0 amappl1 80 11414 0 10833 15 1 14 14 0 8 1 amappl 88 10951 0 10767 5 0 5 5 0 92 0 dma8192 8192 2 0 2 1 1 0 1 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 2 1 1 1 0 8 1 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 27 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1338 0 1306 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1338 0 1306 1 0 1 1 0 8 0 vmmpekpl 168 12279 0 12234 3 0 3 3 0 8 0 vmmpepl 168 86933 0 84976 96 2 94 96 0 357 5 vmsppl 456 1337 0 1306 5 0 5 5 0 8 0 rwobjpl 64 28454 0 23410 83 0 83 83 0 8 0 pdppl 4096 2684 0 2612 112 40 72 88 0 8 0 pvpl 32 17431 0 0 142 1 141 141 0 265 0 pmappl 248 1337 0 1306 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 305 0 56 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7f69a78aa690, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029a9bff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x175 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x175 sys/dev/acpi/acpitimer.c:125 comcnputc(800,29) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(29) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(29) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff833de305) at db_printf+0x9b fault(ffffffff8338552a) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c511be0,ffff800026352018) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c511be0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80003c511e00, count: 0 ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x175 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x175 sys/dev/acpi/acpitimer.c:125 comcnputc(800,29) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(29) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(29) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff833de305) at db_printf+0x9b fault(ffffffff8338552a) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c511be0,ffff800026352018) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c511be0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b ffs2_balloc(fffffd806651c578,3f232,68,fffffd807f7d24e0,1,ffff80003c511e58) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003c511ee0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806addc510,ffff80003c511f98,3,fffffd807f7d24e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff3218,fffffd806addc510,fffffd807f7d24e0,ffff80003c512060,ffff80003c512040) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:691 ktrsyscall(ffff8000ffff3218,b,20,ffff80003c5121f0) at ktrsyscall+0x32b sys/kern/kern_ktrace.c:183 syscall(ffff80003c5121f0) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80003c5121f0) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x787ea5e08920, count: -21