*cpu0: uvm_fault(0xfffffd806beaa018, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x728e104893f0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a376b20 rbx 0 rdx 0 rcx 0xffff8000fffde560 rax 0x2a r8 0xffff80002a376a50 r9 0x4 r10 0x3881e52493a5dff4 r11 0x4a35a2b16c9a6a8 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81b3f4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a376aa0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=125316 pid=13052 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffdf4c0,0xffffffff838b93d0 process=0xffff8000fffeaeb0 user=0xffff80002a371000, vmspace=0xfffffd806beaa3d8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *13052 125316 94976 0 7 0 syz-executor 24768 518337 75538 0 2 0 syz-executor 24768 300614 75538 0 3 0x4000080 fsleep syz-executor 92128 236380 61120 0 3 0x80 nanoslp syz-executor 92128 260409 61120 0 2 0x4000000 syz-executor 57264 508934 1042 0 3 0x80 nanoslp syz-executor 57264 234221 1042 0 3 0x4000080 sbwait syz-executor 57264 230339 1042 0 3 0x4000080 fsleep syz-executor 32202 218001 27463 0 3 0x80 nanoslp syz-executor 32202 186846 27463 0 3 0x4000080 kqread syz-executor 32202 208784 27463 0 3 0x4000080 fsleep syz-executor 76160 423117 94577 0 3 0x400080 nanoslp syz-executor 76160 172122 94577 0 3 0x4400080 kqsel syz-executor 76160 510835 94577 0 3 0x4400080 fsleep syz-executor 54547 286222 22292 0 3 0x82 nanoslp syz-executor 27463 148014 22292 0 3 0x82 nanoslp syz-executor 94478 421282 22292 0 2 0x10000082 syz-executor 61120 278987 22292 0 3 0x82 nanoslp syz-executor 74769 330031 0 0 3 0x14280 nfsidl nfsio 63942 463489 0 0 3 0x14280 nfsidl nfsio 18976 334302 0 0 3 0x14280 nfsidl nfsio 56818 303097 0 0 3 0x14280 nfsidl nfsio 52674 283112 0 0 3 0x14280 nfsidl nfsio 27184 194506 0 0 3 0x14280 nfsidl nfsio 95620 186194 0 0 3 0x14280 nfsidl nfsio 10723 419832 0 0 3 0x14280 nfsidl nfsio 30188 106574 0 0 3 0x14280 nfsidl nfsio 27364 301155 0 0 3 0x14280 nfsidl nfsio 71063 507869 0 0 3 0x14280 nfsidl nfsio 41110 392332 0 0 3 0x14280 nfsidl nfsio 41100 42454 0 0 3 0x14280 nfsidl nfsio 67494 424716 0 0 3 0x14280 nfsidl nfsio 42112 302332 0 0 3 0x14280 nfsidl nfsio 2733 104259 0 0 3 0x14280 nfsidl nfsio 95791 91026 0 0 3 0x14280 nfsidl nfsio 85218 65201 0 0 3 0x14280 nfsidl nfsio 35199 415433 0 0 3 0x14280 nfsidl nfsio 6629 432088 0 0 3 0x14280 nfsidl nfsio 94976 355465 22292 0 3 0x82 nanoslp syz-executor 12625 194810 1 0 3 0x80 nanoslp init 75538 92916 22292 0 3 0x82 nanoslp syz-executor 94577 470414 22292 0 3 0x82 nanoslp syz-executor 1042 452980 22292 0 3 0x82 nanoslp syz-executor 34058 398261 0 0 3 0x14200 bored sosplice 22292 187903 81268 0 3 0x82 kqread syz-executor 81268 407243 15773 0 3 0x10008a sigsusp ksh 15773 91702 91059 0 3 0x98 kqread sshd-session 91059 470624 1246 0 3 0x92 kqread sshd-session 1246 245899 1 0 3 0x88 kqread sshd 38449 137351 15203 74 3 0x1100092 bpf pflogd 15203 260676 1 0 3 0x80 sbwait pflogd 41952 307694 88682 73 3 0x1100090 kqread syslogd 88682 288473 1 0 3 0x100082 sbwait syslogd 12054 129439 1 0 3 0x100080 kqread resolvd 68073 368665 78601 77 3 0x100092 kqread dhcpleased 4893 271951 78601 77 3 0x100092 kqread dhcpleased 78601 321853 1 0 3 0x80 kqread dhcpleased 98074 25099 0 0 3 0x14200 bored smr 91977 204548 0 0 2 0x14200 zerothread 66017 438054 0 0 3 0x14200 aiodoned aiodoned 36996 376011 0 0 3 0x14200 syncer update 34228 90760 0 0 3 0x14200 cleaner cleaner 3515 46034 0 0 3 0x14200 reaper reaper 63474 268442 0 0 3 0x14200 pgdaemon pagedaemon 68737 229575 0 0 3 0x14200 bored viomb 44070 430129 0 0 3 0x40014200 acpi0 acpi0 5823 244607 0 0 3 0x40014200 idle1 38047 37478 0 0 3 0x14200 bored softnet3 26426 1425 0 0 3 0x14200 bored softnet2 28296 73531 0 0 3 0x14200 bored softnet1 93821 446357 0 0 3 0x14200 tqbarend softnet0 79234 465778 0 0 3 0x14200 bored systqmp 54223 305043 0 0 3 0x14200 bored systq 71140 304024 0 0 3 0x14200 tmoslp softclockmp 72994 114480 0 0 3 0x40014200 tmoslp softclock 77948 382417 0 0 3 0x40014200 idle0 1 238437 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bce3610) #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 pmap_extract+0xac sys/arch/amd64/amd64/pmap.c:1572 #4 uvm_fault_lower_lookup+0x268 sys/uvm/uvm_fault.c:1208 #5 uvm_fault_lower+0x86 sys/uvm/uvm_fault.c:1310 #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 13052 (syz-executor) thread 0xffff8000fffde560 (125316) Process 93821 (softnet0) thread 0xffff8000ffffe290 (446357) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10246 11214K 12878K 166960K 20641 0 pcb 17 19K 21K 166960K 1136 0 rtable 218 12K 13K 166960K 2016 0 pf 38 18K 22K 166960K 423 0 ifaddr 37 7K 10K 166960K 368 0 ifgroup 57 2K 3K 166960K 595 0 sysctl 4 1K 3K 166960K 15 0 counters 72 37K 37K 166960K 706 0 ioctlops 1 1K 4K 166960K 2809 0 iov 0 0K 28K 166960K 340 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1524 96K 97K 166960K 6367 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 89 0 VM map 2 1K 1K 166960K 2 0 sem 28 21K 21K 166960K 175 0 dirhash 12 2K 3K 166960K 129 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 90K 106K 166960K 5667 0 sigio 0 0K 0K 166960K 150 0 proc 63 79K 140K 166960K 2106 0 subproc 72 4K 4K 166960K 407 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 836 0 in_multi 74 5K 7K 166960K 641 0 ether_multi 1 0K 0K 166960K 38 0 mrt 1 0K 0K 166960K 17 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 151 678K 678K 166960K 151 0 exec 0 0K 1K 166960K 1892 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 70 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 166K 192K 166960K 50563 0 UVM aobj 131 4K 4K 166960K 135 0 pinsyscall 41 82K 102K 166960K 7778 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 319 0 NDP 13 0K 2K 166960K 264 0 temp 86 8692K 8948K 166960K 196536 0 kqueue 16 26K 33K 166960K 907 0 SYN cache 2 4K 18K 166960K 4 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 120 542 0 539 4 3 1 3 0 8 0 rtentry 176 651 0 566 6 1 5 6 0 8 0 unpcb 144 3943 0 3923 22 20 2 8 0 8 1 syncache 336 27 0 27 6 5 1 1 0 8 1 tcpqe 32 12 0 12 3 3 0 1 0 8 0 tcpcb 808 2663 0 2657 31 25 6 11 0 8 4 arp 128 114 0 93 1 0 1 1 0 8 0 inpcb 384 7050 0 7037 69 59 10 22 0 8 8 nd6 144 152 0 133 1 0 1 1 0 8 0 pkpcb 40 73 0 73 7 6 1 1 0 8 1 kcovpl 48 45 0 37 1 0 1 1 0 8 0 mppekey 1024 68 0 68 3 3 0 1 0 8 0 ppxss 1192 233 0 229 5 4 1 1 0 8 0 pppxif 1504 38 0 37 7 6 1 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 23 0 20 1 0 1 1 0 482 0 pffrnode 88 21 0 18 1 0 1 1 0 8 0 pffrent 40 45 0 42 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 2 0 1 1 0 1 1 0 8 0 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 4 0 2 1 0 1 1 0 8 0 pfstitem 24 257 0 140 1 0 1 1 0 8 0 pfstkey 128 262 0 145 4 0 4 4 0 8 0 pfstate 384 259 0 142 12 0 12 12 0 8 0 pfrule 1344 23 0 17 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 2527 0 2209 39 16 23 29 0 8 1 art_table 32 2531 0 2209 4 0 4 4 0 8 0 art_node 16 627 0 556 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 9 1 0 1 1 0 8 0 semupl 112 8 0 8 3 3 0 1 0 8 0 semapl 112 167 0 141 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 99 0 82 4 1 3 4 0 8 0 dino2pl 256 11059 0 9485 99 0 99 99 0 8 0 ffsino 288 11059 0 9485 113 0 113 113 0 8 0 nchpl 144 18338 0 17681 64 39 25 64 0 8 0 rtmask 32 26 0 26 5 5 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 73155 0 73155 6 5 1 2 0 8 1 percpumem 16 368 0 317 1 0 1 1 0 8 0 kstatmem 264 346 0 319 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 24 0 24 7 6 1 1 0 8 1 scxspl 216 54260 0 54260 19 16 3 8 1 8 3 plimitpl 152 1266 0 1249 1 0 1 1 0 8 0 sigapl 424 5938 0 5867 11 2 9 9 0 8 0 futexpl 64 80250 0 80246 1 0 1 1 0 8 0 knotepl 120 797 0 0 25 0 25 25 0 8 0 kqueuepl 224 1902 0 1887 15 10 5 5 0 8 3 pipepl 336 922 0 895 16 13 3 8 0 8 0 fdescpl 520 5865 0 5834 3 0 3 3 0 8 0 filepl 160 42744 0 42515 38 22 16 20 0 8 3 lockfpl 104 1771 0 1769 2 1 1 2 0 8 0 lockfspl 48 673 0 671 1 0 1 1 0 8 0 sessionpl 144 80 0 72 1 0 1 1 0 8 0 pgrppl 48 192 0 176 1 0 1 1 0 8 0 ucredpl 104 7204 0 7190 1 0 1 1 0 8 0 zombiepl 144 5869 0 5867 1 0 1 1 0 8 0 processpl 1192 5938 0 5867 6 0 6 6 0 8 0 procpl 656 14030 0 13951 9 1 8 8 0 8 0 srpgc 96 49 0 49 5 5 0 1 0 8 0 sosppl 168 23 0 23 5 5 0 1 0 8 0 sockpl 728 11675 0 11640 89 76 13 22 0 8 8 mcl64k 65536 8 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 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 14 0 14 14 0 8 0 mcl2k 2048 50 0 0 5 0 5 5 0 8 0 mtagpl 96 175 0 0 4 0 4 4 0 8 0 mbufpl 256 1388 0 0 83 0 83 83 0 8 0 bufpl 280 14693 0 8551 440 0 440 440 0 8 0 anonpl 32 15098 0 0 122 0 122 122 0 246 0 amapchunkpl 152 168924 0 168354 74 44 30 41 0 158 3 amappl16 200 12065 0 11803 62 35 27 27 0 8 0 amappl15 192 13 0 13 4 4 0 1 0 8 0 amappl14 184 272 0 261 1 0 1 1 0 8 0 amappl13 176 17 0 17 3 3 0 1 0 8 0 amappl12 168 7163 0 7134 3 1 2 2 0 8 0 amappl11 160 66 0 51 1 0 1 1 0 8 0 amappl10 152 17 0 17 3 3 0 1 0 8 0 amappl9 144 267 0 267 4 4 0 1 0 8 0 amappl8 136 43 0 39 1 0 1 1 0 8 0 amappl7 128 229 0 217 1 0 1 1 0 8 0 amappl6 120 586 0 582 1 0 1 1 0 8 0 amappl5 112 298 0 286 1 0 1 1 0 8 0 amappl4 104 524 0 504 1 0 1 1 0 8 0 amappl3 96 35955 0 35847 5 1 4 4 0 8 0 amappl2 88 1317 0 1253 2 0 2 2 0 8 0 amappl1 80 37569 0 36987 19 3 16 17 0 8 0 amappl 88 47951 0 47780 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 259 0 259 5 5 0 1 0 8 0 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 5865 0 5834 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5865 0 5834 1 0 1 1 0 8 0 vmmpekpl 168 39876 0 39800 4 0 4 4 0 8 0 vmmpepl 168 373738 0 371496 130 19 111 118 0 357 0 vmsppl 480 5864 0 5834 5 0 5 5 0 8 0 rwobjpl 72 90714 0 83514 139 1 138 139 0 8 0 pdppl 4096 11737 0 11668 135 64 71 85 0 8 2 pvpl 32 22989 0 0 186 1 185 185 0 265 0 pmappl 256 5864 0 5834 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 572 0 139 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83869ff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,d) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,d) at comcnputc+0x250 sys/dev/ic/com.c:1269 db_putchar(a) at db_putchar+0x774 sys/ddb/db_output.c:168 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 db_printf(ffffffff833fa50d) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a131e) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a2fc6b0,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a2fc6b0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001484000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff8000ffffccd8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffffccd8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 end trace frame: 0xffff80002a2fc850, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83869ff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,d) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,d) at comcnputc+0x250 sys/dev/ic/com.c:1269 db_putchar(a) at db_putchar+0x774 sys/ddb/db_output.c:168 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 db_printf(ffffffff833fa50d) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a131e) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a2fc6b0,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a2fc6b0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001484000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff8000ffffccd8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffffccd8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2fc860) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806bec4708,81,fffffd807f7d3340,ffff8000ffffccd8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd800a2cb450,ffff8000ffffccd8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd800a2cb450,ffff8000ffffccd8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd800a2cb450,ffff8000ffffccd8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd800a2cb450,ffff8000ffffccd8) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff8000ffffccd8) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff8000ffffccd8,b,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000ffffccd8,ffff80002a2fcbd0,ffff80002a2fcb20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2fcbd0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2fcbd0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7178e9e22660, count: -24 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x728e104893f0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x728e104893f0, count: -1