*cpu1: uvm_fault(0xfffffd800b027d58, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x791d8df5d260, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a7fb320 rbx 0 rdx 0 rcx 0xffff800034003a18 rax 0x2a r8 0xffff80002a7fb250 r9 0 r10 0x67d9ad3235e8cbfc r11 0x470b6d2c12da07c7 r12 0 r13 0xffffffff81ddfb88 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff812f14c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a7fb2a0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=15477 pid=98110 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800034003780,0xffff800034002038 process=0xffff80002a2a4eb0 user=0xffff80002a7f6000, vmspace=0xfffffd8066f28028 estcpu=36, cpticks=1, pctcpu=0.0, user=1, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *98110 15477 70215 0 7 0 syz-executor 98110 161482 70215 0 3 0x4000000 getblk syz-executor 40477 236710 4497 0 2 0 syz-executor 40477 177873 4497 0 3 0x4000080 fsleep syz-executor 40477 288960 4497 0 3 0x4000000 biowait syz-executor 40477 34615 4497 0 3 0x4000080 fsleep syz-executor 51559 410532 90480 0 3 0x80 nanoslp syz-executor 51559 412312 90480 0 3 0x4000080 sbwait syz-executor 51559 453072 90480 0 3 0x4000080 fsleep syz-executor 51559 156981 90480 0 3 0x4000080 fsleep syz-executor 45541 26553 78782 0 3 0x2 biowait syz-executor 28284 376831 1 0 3 0x100083 ttyin getty 40122 500176 0 0 3 0x14200 acct acct 60441 116307 78782 0 3 0x2 getblk syz-executor 8493 94097 78782 0 3 0x82 wait syz-executor 4497 310706 78782 0 3 0x82 nanoslp syz-executor 22311 304175 78782 0 3 0x82 nanoslp syz-executor 33350 461820 78782 0 3 0x82 wait syz-executor 54286 447243 0 0 3 0x14200 bored sosplice 90480 211111 78782 0 3 0x82 nanoslp syz-executor 70215 86903 78782 0 3 0x82 nanoslp syz-executor 78782 480312 97856 0 3 0x82 kqread syz-executor 97856 272770 26205 0 3 0x10008a sigsusp ksh 26205 5086 56406 0 3 0x98 kqread sshd-session 56406 75699 23155 0 3 0x92 kqread sshd-session 23155 505662 1 0 3 0x88 kqread sshd 95097 149846 27784 74 3 0x1100092 bpf pflogd 27784 94375 1 0 3 0x80 sbwait pflogd 85749 133766 86190 73 3 0x1100090 kqread syslogd 86190 15255 1 0 3 0x100082 sbwait syslogd 16251 304251 1 0 3 0x100080 kqread resolvd 82234 262166 0 0 3 0x14200 bored smr 61359 144594 0 0 2 0x14200 zerothread 28865 191419 0 0 3 0x14200 aiodoned aiodoned 51230 51436 0 0 3 0x14200 syncer update 48962 330949 0 0 3 0x14200 cleaner cleaner 28651 388379 0 0 3 0x14200 reaper reaper 70061 409449 0 0 3 0x14200 pgdaemon pagedaemon 6224 152303 0 0 3 0x14200 bored viomb 3767 297083 0 0 3 0x40014200 acpi0 acpi0 31167 502693 0 0 3 0x40014200 idle1 8197 289576 0 0 3 0x14200 bored softnet7 7146 399475 0 0 3 0x14200 bored softnet6 69582 449743 0 0 3 0x14200 bored softnet5 72007 274221 0 0 3 0x14200 bored softnet4 15575 268624 0 0 3 0x14200 bored softnet3 78300 214330 0 0 3 0x14200 bored softnet2 99103 202069 0 0 3 0x14200 bored softnet1 98528 122171 0 0 3 0x14200 bored softnet0 17618 41775 0 0 3 0x14200 bored systqmp 6679 255871 0 0 3 0x14200 bored systq 1697 353957 0 0 3 0x14200 tmoslp softclockmp 72290 109586 0 0 3 0x40014200 tmoslp softclock 93802 41368 0 0 3 0x40014200 idle0 1 49288 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff83902808) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 sleep_finish+0x1d6 sys/kern/kern_synch.c:355 #4 msleep_nsec+0x132 sys/kern/kern_synch.c:219 #5 reaper+0x13b sys/kern/kern_exit.c:477 #6 proc_trampoline+0x10 Process 98110 (syz-executor) thread 0xffff800034003cb0 (161482) Process 40477 (syz-executor) thread 0xffff800034002028 (288960) Process 45541 (syz-executor) thread 0xffff800034008550 (26553) Process 60441 (syz-executor) thread 0xffff80002a39bcc8 (116307) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10242 11076K 12634K 166960K 14562 0 pcb 17 16K 22K 166960K 826 0 rtable 234 12K 13K 166960K 857 0 pf 43 19K 67488K 166960K 318 0 ifaddr 44 8K 8K 166960K 189 0 ifgroup 58 2K 2K 166960K 334 0 sysctl 4 1K 9K 166960K 41 0 counters 68 36K 38K 166960K 426 0 ioctlops 0 0K 4K 166960K 2075 0 iov 0 0K 20K 166960K 217 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1523 96K 96K 166960K 3716 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 28 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 126 0 dirhash 12 2K 2K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 2806 0 sigio 0 0K 0K 166960K 55 0 proc 67 99K 180K 166960K 1005 0 subproc 72 4K 4K 166960K 137 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 449 0 in_multi 93 6K 7K 166960K 286 0 ether_multi 1 0K 0K 166960K 20 0 mrt 1 0K 0K 166960K 15 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 1020 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 71 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 220 134K 179K 166960K 27458 0 UVM aobj 83 7K 7K 166960K 92 0 pinsyscall 35 70K 100K 166960K 4071 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 193 0 NDP 12 0K 2K 166960K 137 0 temp 79 8652K 8730K 166960K 133215 0 kqueue 8 14K 32K 166960K 543 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 353 0 352 4 1 3 3 0 8 2 rtentry 176 293 0 206 5 0 5 5 0 8 0 unpcb 144 2116 0 2102 12 6 6 6 0 8 5 syncache 336 10 0 10 3 3 0 1 0 8 0 tcpqe 32 5 0 5 1 1 0 1 0 8 0 tcpcb 736 992 0 982 21 19 2 7 0 8 0 arp 128 33 0 22 1 0 1 1 0 8 0 inpcb 328 3866 0 3854 32 27 5 14 0 8 3 nd6 144 47 0 28 1 0 1 1 0 8 0 pkpcb 40 27 0 27 4 3 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 145 0 145 3 2 1 1 0 8 1 pppxif 1504 10 0 10 4 4 0 1 0 8 0 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pffrag 232 20 0 9 1 0 1 1 0 482 0 pffrnode 88 18 0 7 1 0 1 1 0 8 0 pffrent 40 31 0 20 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 167 0 73 1 0 1 1 0 8 0 pfstkey 128 236 0 142 4 0 4 4 0 8 0 pfstate 384 201 0 107 10 0 10 10 0 8 0 pfrule 1344 34 0 26 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 4 0 1 4 1 3 3 0 8 0 art_heap4 256 1243 0 839 33 5 28 29 0 8 2 art_table 40 1247 0 840 5 0 5 5 0 8 0 art_node 32 290 0 215 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 117 0 107 1 0 1 1 0 8 0 shmpl 112 89 0 9 3 0 3 3 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 6674 0 5157 97 1 96 96 0 8 0 ffsino 296 6674 0 5157 118 0 118 118 0 8 0 nchpl 144 10517 0 8818 64 0 64 64 0 8 0 rtmask 32 25 0 25 6 5 1 1 0 8 1 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 39099 0 39097 3 2 1 2 0 8 0 percpumem 16 228 0 179 1 0 1 1 0 8 0 kstatmem 264 212 0 186 5 3 2 3 0 8 0 scsiplug 72 13 0 13 5 4 1 1 0 8 1 scxspl 216 69967 0 69965 16 15 1 8 1 8 0 plimitpl 152 858 0 840 1 0 1 1 0 8 0 sigapl 424 3100 0 3049 9 0 9 9 0 8 1 knotepl 120 788 0 0 24 0 24 24 0 8 0 kqueuepl 224 1498 0 1491 17 13 4 12 0 8 3 pipepl 344 435 0 408 4 1 3 4 0 8 0 fdescpl 528 3047 0 3020 3 0 3 3 0 8 0 filepl 160 23374 0 23158 32 17 15 21 0 8 2 lockfpl 104 1473 0 1471 3 2 1 2 0 8 0 lockfspl 48 594 0 592 1 0 1 1 0 8 0 sessionpl 144 37 0 29 1 0 1 1 0 8 0 pgrppl 48 133 0 117 1 0 1 1 0 8 0 ucredpl 104 3915 0 3905 1 0 1 1 0 8 0 zombiepl 144 4282 0 4279 1 0 1 1 0 8 0 processpl 1248 3100 0 3049 6 0 6 6 0 8 1 procpl 664 7750 0 7692 10 2 8 8 0 8 1 sosppl 168 19 0 19 5 4 1 1 0 8 1 sockpl 752 6462 0 6435 51 38 13 22 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 7 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 80 0 0 10 0 10 10 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 305 0 0 17 0 17 17 0 8 0 bufpl 280 28010 0 21867 440 0 440 440 0 8 0 anonpl 32 12789 0 0 104 0 104 104 0 246 0 amapchunkpl 152 105952 0 105463 65 37 28 39 0 158 3 amappl16 200 10412 0 10374 81 66 15 26 0 8 7 amappl15 192 4 0 3 1 0 1 1 0 8 0 amappl14 184 145 0 136 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 3826 0 3798 4 2 2 3 0 8 0 amappl11 160 52 0 44 1 0 1 1 0 8 0 amappl10 152 17 0 17 1 1 0 1 0 8 0 amappl9 144 248 0 247 2 1 1 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 128 0 118 1 0 1 1 0 8 0 amappl6 120 335 0 331 1 0 1 1 0 8 0 amappl5 112 155 0 148 1 0 1 1 0 8 0 amappl4 104 344 0 327 1 0 1 1 0 8 0 amappl3 96 19221 0 19114 5 1 4 4 0 8 0 amappl2 88 811 0 764 2 0 2 2 0 8 0 amappl1 80 21203 0 20695 15 0 15 15 0 8 0 amappl 88 26159 0 25993 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 3 0 3 2 1 1 1 0 8 1 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 128 256 0 256 4 4 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 11 0 11 4 4 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 91 0 9 2 0 2 2 0 8 0 uaddrrnd 24 3047 0 3020 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3047 0 3020 1 0 1 1 0 8 0 vmmpekpl 168 25153 0 25104 3 0 3 3 0 8 0 vmmpepl 168 198831 0 197152 122 26 96 111 0 357 6 vmsppl 488 3046 0 3020 6 1 5 5 0 8 0 rwobjpl 80 57315 0 50494 150 2 148 148 0 8 0 pdppl 4096 6102 0 6040 118 52 66 82 0 8 4 pvpl 32 20183 0 0 164 1 163 163 0 265 0 pmappl 256 3046 0 3020 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 336 0 87 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: 0x791d8df5d260, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83313fdd) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d21b4) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a38d150,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a38d150) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:491 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80002a38d230, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83313fdd) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d21b4) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a38d150,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a38d150) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:491 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000168d000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff800034003780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800034003780) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a38d300) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064cf6638,1,fffffd80097fb888,ffff800034003780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b924900,ffff800034003780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b924900,ffff800034003780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b924900,ffff800034003780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b924900,ffff800034003780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800034003780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800034003780,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800034003780,ffff80002a38d670,ffff80002a38d5c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a38d670) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a38d670) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x728be31c4a50, count: -26