*cpu0: uvm_fault(0xfffffd8066e14010, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xbd7ac575b40, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002d4e1370 rbx 0 rdx 0 rcx 0xffff80002a2499c8 rax 0x2a r8 0xffff80002d4e12a0 r9 0 r10 0xca13623c7f3d2d9d r11 0x24e62b93efb89dea r12 0 r13 0 r14 0 r15 0 rip 0xffffffff814f44c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002d4e12f0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor.0) tid=56914 pid=78236 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=83, usrpri=83, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a248028,0xffff80002a2462d8 process=0xffff8000ffff3558 user=0xffff80002d4dc000, vmspace=0xfffffd806b32a1d0 estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 77817 420574 59002 0 7 0x8000002 syz-executor.2 64214 497391 8550 0 2 0x8000000 syz-executor.7 3271 212766 35576 0 2 0x8000000 syz-executor.3 3271 71090 35576 0 3 0xc000080 fsleep syz-executor.3 72762 171298 69440 0 2 0x8000000 syz-executor.4 72762 319227 69440 0 3 0xc000080 fsleep syz-executor.4 72762 40003 69440 0 2 0xc000000 syz-executor.4 24024 294946 26244 0 2 0x8000000 syz-executor.5 24024 261934 26244 0 2 0xc000000 syz-executor.5 6780 87371 26225 0 2 0x8000000 syz-executor.6 78236 186537 44417 0 2 0x8000000 syz-executor.0 *78236 56914 44417 0 7 0xc000000 syz-executor.0 83113 285680 23050 0 3 0x8000080 nanoslp syz-executor.1 83113 221400 23050 0 3 0xc000080 ttyin syz-executor.1 83113 447304 23050 0 3 0xc000080 fsleep syz-executor.1 44417 301918 59002 0 3 0x8000082 nanoslp syz-executor.0 26225 35143 59002 0 3 0x8000082 nanoslp syz-executor.6 69440 365769 59002 0 3 0x8000082 nanoslp syz-executor.4 27441 406079 1 0 3 0x18100083 ttyin getty 26244 420857 59002 0 3 0x8000082 nanoslp syz-executor.5 35576 86299 59002 0 3 0x8000082 nanoslp syz-executor.3 8550 94562 59002 0 3 0x8000082 nanoslp syz-executor.7 23050 257398 59002 0 3 0x8000082 nanoslp syz-executor.1 19678 18569 0 0 3 0x14200 acct acct 86170 440990 0 0 3 0x14200 bored sosplice 59002 39960 1797 0 3 0x1a000082 wait syz-fuzzer 59002 296165 1797 0 3 0x1e000082 nanoslp syz-fuzzer 59002 179259 1797 0 3 0x1e000082 thrsleep syz-fuzzer 59002 104131 1797 0 3 0x1e000082 kqread syz-fuzzer 59002 164251 1797 0 3 0x1e000082 wait syz-fuzzer 59002 270435 1797 0 3 0x1e000082 thrsleep syz-fuzzer 59002 269573 1797 0 3 0x1e000082 wait syz-fuzzer 59002 104500 1797 0 3 0x1e000082 thrsleep syz-fuzzer 59002 334856 1797 0 3 0x1e000082 thrsleep syz-fuzzer 59002 506507 1797 0 3 0x1e000082 wait syz-fuzzer 59002 219094 1797 0 3 0x1e000082 thrsleep syz-fuzzer 59002 513811 1797 0 3 0x1e000082 wait syz-fuzzer 59002 286213 1797 0 3 0x1e000082 wait syz-fuzzer 59002 491368 1797 0 3 0x1e000082 wait syz-fuzzer 59002 471078 1797 0 3 0x1e000082 wait syz-fuzzer 59002 89537 1797 0 3 0x1e000082 thrsleep syz-fuzzer 1797 427519 55939 0 3 0x810008a sigsusp ksh 55939 237981 32649 0 3 0x1800009a kqread sshd 32649 379351 1 0 3 0x18000088 kqread sshd 4046 241287 42387 73 3 0x19100090 kqread syslogd 42387 345798 1 0 3 0x18100082 sbwait syslogd 3435 122833 1 0 3 0x18100080 kqread resolvd 75940 391927 62391 77 3 0x18100092 kqread dhcpleased 38154 182412 62391 77 3 0x18100092 kqread dhcpleased 62391 349803 1 0 3 0x18000080 kqread dhcpleased 63418 457448 0 0 3 0x14200 bored smr 42571 440691 0 0 2 0x14200 zerothread 96507 294767 0 0 3 0x14200 aiodoned aiodoned 35581 366973 0 0 3 0x14200 syncer update 68611 99875 0 0 3 0x14200 cleaner cleaner 66845 301229 0 0 3 0x14200 reaper reaper 10397 318076 0 0 3 0x14200 pgdaemon pagedaemon 98548 161885 0 0 3 0x14200 bored viomb 92427 336610 0 0 3 0x40014200 acpi0 acpi0 60280 142179 0 0 3 0x40014200 idle1 83660 268856 0 0 3 0x14200 bored softnet3 9599 410317 0 0 3 0x14200 bored softnet2 9177 419776 0 0 3 0x14200 bored softnet1 62330 458928 0 0 3 0x14200 bored softnet0 25068 173761 0 0 3 0x14200 bored systqmp 17055 165227 0 0 3 0x14200 bored systq 12298 365009 0 0 3 0x14200 tmoslp softclockmp 82006 283249 0 0 3 0x40014200 tmoslp softclock 27610 313690 0 0 3 0x40014200 idle0 1 206018 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &map->flags_lock r = 0 (0xfffffd806b32a320) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 vm_map_lock_ln+0x106 sys/uvm/uvm_map.c:5294 #4 uvmfault_lookup+0xb6 sys/uvm/uvm_fault.c:1779 #5 uvm_fault_check+0x63d uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #5 uvm_fault_check+0x63d sys/uvm/uvm_fault.c:710 #6 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #7 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 77817 (syz-executor.2) thread 0xffff80002a248548 (420574) Process 78236 (syz-executor.0) thread 0xffff80002a2499c8 (56914) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10193 6449K 6892K 166960K 14556 0 pcb 17 14K 15K 166960K 723 0 rtable 205 15K 16K 166960K 2702 0 pf 34 9K 10K 166960K 311 0 ifaddr 40 16K 16K 166960K 365 0 ifgroup 59 2K 3K 166960K 541 0 sysctl 4 1K 2K 166960K 15 0 counters 68 36K 37K 166960K 312 0 ioctlops 0 0K 4K 166960K 1793 0 iov 0 0K 20K 166960K 336 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1390 87K 88K 166960K 4774 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 201 0 VM map 2 1K 1K 166960K 2 0 sem 13 1K 1K 166960K 72 0 dirhash 12 2K 2K 166960K 87 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 6044 0 sigio 0 0K 0K 166960K 111 0 proc 59 79K 152K 166960K 2733 0 subproc 92 5K 8K 166960K 942 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 836 0 in_multi 77 5K 7K 166960K 949 0 ether_multi 1 0K 0K 166960K 49 0 mrt 2 0K 0K 166960K 25 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 1775 0 pfkey data 0 0K 0K 166960K 15 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 299 221K 232K 166960K 53251 0 UVM aobj 22 2K 2K 166960K 24 0 pinsyscall 37 74K 100K 166960K 8841 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 389 0 NDP 13 0K 1K 166960K 270 0 temp 74 6819K 7316K 166960K 163910 0 kqueue 12 18K 28K 166960K 887 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 761 0 758 2 1 1 2 0 8 0 rtentry 112 900 0 811 5 1 4 4 0 8 0 unpcb 144 4754 0 4741 21 20 1 6 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 93 169 93 1 1 0 1 0 8 0 tcpcb 808 1601 0 1596 32 30 2 8 0 8 1 arp 120 161 0 148 1 0 1 1 0 8 0 inpcb 384 5978 0 5968 59 51 8 15 0 8 7 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 39 0 39 1 1 0 1 0 8 0 nd6 136 237 0 215 1 0 1 1 0 8 0 pkpcb 40 42 0 42 22 21 1 1 0 8 1 kcovpl 48 72 0 65 1 0 1 1 0 8 0 ppxss 1168 19 0 19 15 15 0 1 0 8 0 pffrag 232 62 0 58 5 4 1 1 0 482 0 pffrnode 88 61 0 57 5 4 1 1 0 8 0 pffrent 40 1215 0 1211 5 4 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 24 436 0 399 1 0 1 1 0 8 0 pfstkey 128 436 0 399 3 1 2 3 0 8 0 pfstate 376 436 0 399 11 6 5 8 0 8 0 pfrule 1344 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 3302 0 2921 62 35 27 31 0 8 0 art_table 32 3303 0 2921 4 0 4 4 0 8 0 art_node 16 877 0 796 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 11 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 65 0 54 1 0 1 1 0 8 0 shmpl 112 21 0 2 1 0 1 1 0 8 0 dirhash 1024 67 0 50 3 0 3 3 0 8 0 dino2pl 256 10840 0 9298 97 0 97 97 0 8 0 ffsino 272 10840 0 9298 104 0 104 104 0 8 0 nchpl 144 19580 0 17851 67 0 67 67 0 8 0 uvmvnodes 80 9700 0 0 198 0 198 198 0 8 0 uvmvnodes: pool(0xffffffff82e97e08:uvmvnodes): page inconsistency: page 0x0; at page head addr 0xfffffd8058d49f90 (p 0xfffffd8058d49000) vnodes 216 9700 0 0 539 0 539 539 0 8 0 namei 1024 68789 0 68789 11 10 1 2 0 8 1 percpumem 16 170 0 122 1 0 1 1 0 8 0 vcpupl 3904 19 0 1 3 0 3 3 0 8 0 vmpool 696 48 0 30 2 0 2 2 0 8 0 kstatmem 264 270 0 244 3 0 3 3 0 8 0 scsiplug 72 28 0 28 19 18 1 1 0 8 1 scxspl 216 123060 0 123060 37 34 3 8 1 8 3 plimitpl 152 765 0 750 1 0 1 1 0 8 0 sigapl 424 6241 0 6193 9 3 6 7 0 8 0 futexpl 64 85409 0 85406 9 8 1 1 0 8 0 knotepl 120 807 0 0 19 0 19 19 0 8 0 kqueuepl 216 1756 0 1748 2 1 1 2 0 8 0 pipepl 320 909 0 881 4 1 3 4 0 8 0 fdescpl 496 6220 0 6192 5 0 5 5 0 8 0 filepl 152 39685 0 39457 40 26 14 18 0 8 2 lockfpl 104 1483 0 1481 2 1 1 2 0 8 0 lockfspl 48 605 0 603 1 0 1 1 0 8 0 sessionpl 144 89 0 74 1 0 1 1 0 8 0 pgrppl 48 171 0 156 1 0 1 1 0 8 0 ucredpl 104 6530 0 6518 1 0 1 1 0 8 0 zombiepl 144 6193 0 6193 3 2 1 1 0 8 1 processpl 1136 6241 0 6193 4 0 4 4 0 8 0 procpl 656 12832 0 12762 10 3 7 8 0 8 0 srpgc 96 73 0 73 13 13 0 1 0 8 0 sosppl 168 69 0 69 22 21 1 1 0 8 1 sockpl 664 11615 0 11589 73 65 8 14 0 8 5 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 634 0 0 49 16 33 49 0 8 0 mtagpl 96 19 0 0 1 0 1 1 0 8 0 mbufpl 256 1515 0 0 63 0 63 63 0 8 0 bufpl 280 19154 0 9454 693 0 693 693 0 8 0 anonpl 24 861020 0 854857 234 149 85 98 0 186 16 amapchunkpl 152 172831 0 172172 124 86 38 50 0 158 7 amappl16 200 19105 0 18970 147 135 12 24 0 8 0 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 443 0 432 2 1 1 2 0 8 0 amappl13 176 14 0 13 1 0 1 1 0 8 0 amappl12 168 7859 0 7827 4 1 3 3 0 8 0 amappl11 160 52 0 42 1 0 1 1 0 8 0 amappl10 152 180 0 170 1 0 1 1 0 8 0 amappl9 144 295 0 295 2 2 0 1 0 8 0 amappl8 136 350 0 310 2 0 2 2 0 8 0 amappl7 128 88 0 71 1 0 1 1 0 8 0 amappl6 120 1256 0 1240 2 0 2 2 0 8 0 amappl5 112 410 0 398 1 0 1 1 0 8 0 amappl4 104 1067 0 1033 2 0 2 2 0 8 0 amappl3 96 32141 0 32061 4 1 3 3 0 8 0 amappl2 88 6798 0 6726 4 2 2 4 0 8 0 amappl1 80 31698 0 31208 23 12 11 22 0 8 0 amappl 88 51862 0 51664 6 0 6 6 0 92 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 23 0 2 1 0 1 1 0 8 0 uaddrrnd 24 6268 0 6222 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6268 0 6222 1 0 1 1 0 8 0 vmmpekpl 168 46162 0 46095 4 0 4 4 0 8 0 vmmpepl 168 393833 0 391932 209 112 97 114 0 357 0 vmsppl 440 6267 0 6222 7 1 6 6 0 8 0 rwobjpl 56 102773 0 91959 177 23 154 158 0 8 0 pdppl 4096 12543 0 12462 397 314 83 88 0 8 2 pvpl 32 48607 0 0 394 2 392 392 0 265 0 pmappl 248 6267 0 6222 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 843 0 423 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82d2fff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_write_1(3f8,0,72) at x86_bus_space_io_write_1+0x37 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,72) at comcnputc+0x12a bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,72) at comcnputc+0x12a sys/dev/ic/com.c:1264 cnputc(72) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(72) at db_putchar+0x3eb sys/ddb/db_output.c:155 kprintf() at kprintf+0x69a db_printf(ffffffff8288f1a9) at db_printf+0x89 sys/kern/subr_prf.c:498 db_ktrap(6,0,ffff80002d4d4cc0) at db_ktrap+0xb5 db_printtrap sys/arch/amd64/amd64/db_interface.c:98 [inline] db_ktrap(6,0,ffff80002d4d4cc0) at db_ktrap+0xb5 sys/arch/amd64/amd64/db_interface.c:127 kerntrap(ffff80002d4d4cc0) at kerntrap+0x142 sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b rw_enter(0,1) at rw_enter+0x172 sys/kern/kern_rwlock.c:253 uvm_vnp_terminate(fffffd807bcce7e0) at uvm_vnp_terminate+0x29 sys/uvm/uvm_vnode.c:428 end trace frame: 0xffff80002d4d4ea0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82d2fff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_write_1(3f8,0,72) at x86_bus_space_io_write_1+0x37 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,72) at comcnputc+0x12a bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,72) at comcnputc+0x12a sys/dev/ic/com.c:1264 cnputc(72) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(72) at db_putchar+0x3eb sys/ddb/db_output.c:155 kprintf() at kprintf+0x69a db_printf(ffffffff8288f1a9) at db_printf+0x89 sys/kern/subr_prf.c:498 db_ktrap(6,0,ffff80002d4d4cc0) at db_ktrap+0xb5 db_printtrap sys/arch/amd64/amd64/db_interface.c:98 [inline] db_ktrap(6,0,ffff80002d4d4cc0) at db_ktrap+0xb5 sys/arch/amd64/amd64/db_interface.c:127 kerntrap(ffff80002d4d4cc0) at kerntrap+0x142 sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b rw_enter(0,1) at rw_enter+0x172 sys/kern/kern_rwlock.c:253 uvm_vnp_terminate(fffffd807bcce7e0) at uvm_vnp_terminate+0x29 sys/uvm/uvm_vnode.c:428 vclean(fffffd807bcce7e0,8,ffff80002a248548) at vclean+0x10a sys/kern/vfs_subr.c:1063 vgonel(fffffd807bcce7e0,ffff80002a248548) at vgonel+0x7f sys/kern/vfs_subr.c:1175 checkalias(fffffd807e7341b8,441300,0) at checkalias+0x159 cdevvp(441300,ffff80002d4d5000) at cdevvp+0x9c getdevvp sys/kern/vfs_subr.c:533 [inline] cdevvp(441300,ffff80002d4d5000) at cdevvp+0x9c sys/kern/vfs_subr.c:507 spec_open_clone(ffff80002d4d50d8) at spec_open_clone+0x18f sys/kern/spec_vnops.c:711 spec_open(ffff80002d4d50d8) at spec_open+0x242 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806e290a20,3,fffffd807f7d77b8,ffff80002a248548) at VOP_OPEN+0x79 sys/kern/vfs_vops.c:138 vn_open(ffff80002d4d5328,3,0) at vn_open+0x4e4 sys/kern/vfs_vnops.c:177 doopenat(ffff80002a248548,ffffff9c,8251e311145,2,0,ffff80002d4d54d0) at doopenat+0x269 sys/kern/vfs_syscalls.c:1126 syscall(ffff80002d4d5580) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002d4d5580) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7234aca27880, count: -25 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: 0xbd7ac575b40, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xbd7ac575b40, count: -1