*cpu1: uvm_fault(0xffffffff839d3948, 0xffff80000149602a, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x729014b66e60, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4ff2d0 rbx 0 rdx 0 rcx 0xffff8000ffff6540 rax 0x2a r8 0xffff80003c4ff200 r9 0 r10 0x16f6d9eb493044a9 r11 0xbda6c09e6a7fb5a1 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff820734c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4ff250 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-executor) tid=416754 pid=74220 tcnt=1 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=0xffff8000ffff74a0,0xffffffff839f02f0 process=0xffff80003c4d8020 user=0xffff80003c4fa000, vmspace=0xfffffd806ae9dad0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *74220 416754 99949 0 7 0 syz-executor 64381 474669 93239 0 2 0 syz-executor 64381 294440 93239 0 7 0x4000000 syz-executor 79880 386649 20142 0 2 0 syz-executor 79880 144738 20142 0 3 0x4000080 fsleep syz-executor 98956 523841 0 0 3 0x14200 bored sosplice 93130 74877 67261 60929 2 0x10 syz-executor 93130 87763 67261 60929 2 0x4000010 syz-executor 70652 80762 73300 -1 3 0x90 nanoslp syz-executor 70652 246476 73300 -1 3 0x4000090 piperd syz-executor 70652 174462 73300 -1 3 0x4000090 fsleep syz-executor 20436 283030 22102 0 3 0x90 nanoslp syz-executor 20436 374854 22102 0 3 0x4000090 msgwait syz-executor 20436 267538 22102 0 3 0x4000090 fsleep syz-executor 86701 110861 0 0 3 0x14200 acct acct 22102 292416 86232 0 3 0x82 nanoslp syz-executor 73300 32370 86232 0 3 0x82 nanoslp syz-executor 29165 421343 86232 0 2 0x2 syz-executor 99949 424690 86232 0 3 0x82 nanoslp syz-executor 20142 41559 86232 0 3 0x82 nanoslp syz-executor 93239 212224 86232 0 3 0x82 nanoslp syz-executor 67261 493098 86232 0 3 0x82 nanoslp syz-executor 90544 487743 86232 0 3 0x82 nanoslp syz-executor 86232 515182 48349 0 3 0x82 kqread syz-executor 48349 323137 6308 0 3 0x10008a sigsusp ksh 6308 50490 92590 0 3 0x98 kqread sshd-session 92590 443356 7819 0 3 0x92 kqread sshd-session 45251 223177 1 0 3 0x100083 ttyin getty 7819 95082 1 0 3 0x88 kqread sshd 61876 142129 69753 74 3 0x1100092 bpf pflogd 69753 381692 1 0 3 0x80 sbwait pflogd 84604 259268 81350 73 3 0x1100090 kqread syslogd 81350 48981 1 0 3 0x100082 sbwait syslogd 52716 283172 1 0 3 0x100080 kqread resolvd 71970 509147 59571 77 3 0x100092 kqread dhcpleased 58675 52465 59571 77 3 0x100092 kqread dhcpleased 59571 22377 1 0 3 0x80 kqread dhcpleased 41412 403747 0 0 3 0x14200 bored smr 80861 82593 0 0 2 0x14200 zerothread 55577 389451 0 0 3 0x14200 aiodoned aiodoned 30018 55768 0 0 3 0x14200 syncer update 54062 127038 0 0 3 0x14200 cleaner cleaner 46485 278522 0 0 3 0x14200 reaper reaper 31961 251778 0 0 3 0x14200 pgdaemon pagedaemon 6729 101813 0 0 3 0x14200 bored viomb 43193 241803 0 0 3 0x40014200 acpi0 acpi0 63449 456474 0 0 3 0x40014200 idle1 87113 482474 0 0 3 0x14200 bored softnet3 41748 262336 0 0 3 0x14200 bored softnet2 94199 430521 0 0 3 0x14200 bored softnet1 7812 241101 0 0 3 0x14200 bored softnet0 41332 507132 0 0 2 0x14200 systqmp 78163 33947 0 0 3 0x14200 bored systq 54944 357496 0 0 3 0x14200 tmoslp softclockmp 75001 314497 0 0 3 0x40014200 tmoslp softclock 21048 226528 0 0 3 0x40014200 idle0 1 348557 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 (0xfffffd806ae9c308) #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_extract+0xac sys/arch/amd64/amd64/pmap.c:1572 #4 uvm_fault_upper_lookup+0x1fb sys/uvm/uvm_fault.c:956 #5 uvm_fault+0x159 sys/uvm/uvm_fault.c:671 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 74220 (syz-executor) thread 0xffff8000ffff6540 (416754) exclusive rwlock amaplk r = 0 (0xfffffd80703c1120) #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_fault_check+0x54c sys/uvm/uvm_fault.c:844 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:666 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806ae9dbd0) #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_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1860 #3 uvm_fault_check+0x4b sys/uvm/uvm_fault.c:730 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:666 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806ae9c308) #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_extract+0xac sys/arch/amd64/amd64/pmap.c:1572 #4 uvm_fault_upper_lookup+0x1fb sys/uvm/uvm_fault.c:956 #5 uvm_fault+0x159 sys/uvm/uvm_fault.c:671 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 64381 (syz-executor) thread 0xffff8000ffff74a0 (294440) exclusive rwlock netlock r = 0 (0xffffffff83888518) #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 rtm_output+0x78c sys/net/rtsock.c:969 #3 route_output+0x9a1 sys/net/rtsock.c:878 #4 route_send+0xd7 sys/net/rtsock.c:342 #5 sosend+0x804 #6 sendit+0x721 sys/kern/uipc_syscalls.c:779 #7 sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff8000014ddcb8) #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 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 sosend+0x2e2 sys/kern/uipc_socket.c:630 #4 sendit+0x721 sys/kern/uipc_syscalls.c:779 #5 sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10190 11020K 11215K 166960K 11319 0 pcb 18 12K 12K 166960K 32 0 rtable 217 6K 6K 166960K 358 0 pf 34 17K 21K 166960K 55 0 ifaddr 44 7K 8K 166960K 47 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 1K 166960K 1 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 1492 0 iov 0 0K 12K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1341 84K 85K 166960K 1388 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 205 0 proc 72 91K 140K 166960K 535 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 13 0 in_multi 102 7K 7K 166960K 106 0 ether_multi 1 0K 0K 166960K 1 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 374 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 159K 168K 166960K 3580 0 UVM aobj 4 2K 2K 166960K 5 0 pinsyscall 42 84K 107K 166960K 1293 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 12 0K 2K 166960K 28 0 temp 38 8675K 8740K 166960K 4235 0 kqueue 14 22K 26K 166960K 33 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 40 0 34 1 0 1 1 0 8 0 rtentry 168 113 0 12 5 0 5 5 0 8 0 unpcb 144 73 0 52 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 22 0 16 1 0 1 1 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 376 148 0 135 5 0 5 5 0 8 3 nd6 136 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 4 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 1 1 0 1 1 0 8 0 pffrent 40 5 0 2 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 23 0 0 1 0 1 1 0 8 0 pfstkey 128 23 0 0 1 0 1 1 0 8 0 pfstate 376 23 0 0 3 0 3 3 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 484 0 41 29 0 29 29 0 8 1 art_table 32 485 0 41 4 0 4 4 0 8 0 art_node 16 112 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1665 0 150 95 0 95 95 0 8 0 ffsino 280 1665 0 150 109 0 109 109 0 8 0 nchpl 144 1957 0 262 63 0 63 63 0 8 0 uvmvnodes 80 1769 0 0 37 0 37 37 0 8 0 vnodes 216 1769 0 0 99 0 99 99 0 8 0 namei 1024 5929 0 5929 2 0 2 2 0 8 2 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 6197 0 6197 3 2 1 2 1 8 1 plimitpl 152 30 0 13 1 0 1 1 0 8 0 sigapl 424 509 0 458 7 0 7 7 0 8 1 futexpl 64 1133 0 1130 1 0 1 1 0 8 0 knotepl 120 556 0 0 17 0 17 17 0 8 0 kqueuepl 216 36 0 25 1 0 1 1 0 8 0 pipepl 328 112 0 84 3 0 3 3 0 8 0 fdescpl 504 488 0 457 6 0 6 6 0 8 1 filepl 152 1822 0 1589 11 0 11 11 0 8 2 lockfpl 104 31 0 28 1 0 1 1 0 8 0 lockfspl 48 14 0 11 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 138 0 122 1 0 1 1 0 8 0 zombiepl 144 459 0 458 1 0 1 1 0 8 0 processpl 1176 509 0 458 5 0 5 5 0 8 0 procpl 656 635 0 577 6 0 6 6 0 8 0 sosppl 168 2 0 0 1 0 1 1 0 8 0 sockpl 688 264 0 224 7 0 7 7 0 8 3 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 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 174 0 0 11 0 11 11 0 8 0 bufpl 280 2377 0 122 162 0 162 162 0 8 0 anonpl 24 100622 0 97349 24 3 21 24 0 184 0 amapchunkpl 152 10168 0 9689 22 0 22 22 0 158 2 amappl16 200 1858 0 1835 5 3 2 5 0 8 0 amappl15 192 6 0 6 2 2 0 1 0 8 0 amappl14 184 124 0 111 1 0 1 1 0 8 0 amappl13 176 39 0 39 1 1 0 1 0 8 0 amappl12 168 1134 0 1103 3 1 2 2 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 283 0 283 1 1 0 1 0 8 0 amappl8 136 88 0 86 1 0 1 1 0 8 0 amappl7 128 116 0 104 1 0 1 1 0 8 0 amappl6 120 180 0 176 1 0 1 1 0 8 0 amappl5 112 122 0 113 1 0 1 1 0 8 0 amappl4 104 328 0 308 1 0 1 1 0 8 0 amappl3 96 1702 0 1593 5 1 4 4 0 8 1 amappl2 88 631 0 569 2 0 2 2 0 8 0 amappl1 80 8350 0 7750 15 0 15 15 0 8 2 amappl 88 2888 0 2728 5 0 5 5 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 4 0 1 1 0 1 1 0 8 0 uaddrrnd 24 488 0 457 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 488 0 457 1 0 1 1 0 8 0 vmmpekpl 168 5708 0 5670 2 0 2 2 0 8 0 vmmpepl 168 37538 0 35595 90 0 90 90 0 357 3 vmsppl 456 487 0 457 5 0 5 5 0 8 1 rwobjpl 64 14641 0 11959 44 0 44 44 0 8 0 pdppl 4096 983 0 914 101 30 71 87 0 8 2 pvpl 32 10002 0 0 82 1 81 81 0 265 0 pmappl 248 487 0 457 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 274 0 32 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x729014b66e60, 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+0x77 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x77 sys/dev/acpi/acpitimer.c:120 comcnputc(800,32) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(32) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(32) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff833e74c4) at db_printf+0x9b fault(ffffffff8338770d) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff8000348b67c0,ffff80000149602a) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff8000348b67c0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff8000348b68f0, 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+0x77 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x77 sys/dev/acpi/acpitimer.c:120 comcnputc(800,32) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(32) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(32) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff833e74c4) at db_printf+0x9b fault(ffffffff8338770d) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff8000348b67c0,ffff80000149602a) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff8000348b67c0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b arp_rtrequest(ffff800000039058,1,fffffd806a8b1c98) at arp_rtrequest+0x66f arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806a8b1c98) at arp_rtrequest+0x66f sys/netinet/if_ether.c:184 rtrequest(1,ffff8000348b6aa0,0,ffff8000348b6a20,0) at rtrequest+0xc5c sys/net/route.c:1117 rtm_output(ffff8000013e3700,ffff8000348b6b48,ffff8000348b6aa0,0,0) at rtm_output+0x876 sys/net/rtsock.c:973 route_output(fffffd807e2cf600,ffff8000014ddaf8) at route_output+0x9a1 sys/net/rtsock.c:878 route_send(ffff8000014ddaf8,fffffd807e2cf600,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff8000014ddaf8,0,ffff8000348b6ce8,0,0,808) at sosend+0x804 sendit(ffff8000ffff74a0,5,ffff8000348b6de0,808,ffff8000348b6e90) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff8000ffff74a0,ffff8000348b6f40,ffff8000348b6e90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff8000348b6f40) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000348b6f40) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfffbc7f4d40, count: -24