uvm_fault(0xfffffd807efff000, 0x8f, 0, 1) -> e kernel: page fault trap, code=0 Stopped at wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807efff000, 0x8f, 0, 1) -> e wsmuxclose(4500,1,2000,ffff800020b432d8) at wsmuxclose+117 end trace frame: 0xffff800020b3d750, count: 0 ddb{0}> trace wsmuxclose(4500,1,2000,ffff800020b432d8) at wsmuxclose+117 spec_close(ffff800020b3d760) at spec_close+928 VOP_CLOSE(fffffd80720fab68,1,fffffd807f7c7960,ffff800020b432d8) at VOP_CLOSE+112 vn_closefile(fffffd806929ea30,ffff800020b432d8) at vn_closefile+352 fdrop(fffffd806929ea30,ffff800020b432d8) at fdrop+225 closef(fffffd806929ea30,ffff800020b432d8) at closef+297 fdfree(ffff800020b432d8) at fdfree+232 exit1(ffff800020b432d8,0,1) at exit1+750 sys_exit(ffff800020b432d8,ffff800020b3da60,ffff800020b3da50) at sys_exit+23 syscall(ffff800020b3db00) at syscall+1452 Xsyscall(6,1,0,1,0,7f7ffffd17f4) at Xsyscall+296 end of kernel end trace frame: 0x7f7ffffd17c0, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 18446603336769853152 rbx 0 rdx 18446744071595043483 cy_pio_rec+132023 rcx 0 rax 0 r8 0 r9 0 r10 18446603336771056672 r11 9006008691966145556 r12 18446603336221355264 r13 0 r14 18446603336221355344 r15 18446744073709551615 rip 18446744071593530949 wsmuxclose+117 cs 8 rflags 66118 __ALIGN_SIZE+62022 rsp 18446603336769853088 ss 16 wsmuxclose+117: cmpq %r12,144(%r15) ddb{0}> show proc PROC (syz-executor.0) pid=434708 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020b42018,0xffff800020b42280 process=0xffff800020b45708 user=0xffff800020b38000, vmspace=0xfffffd807efff000 estcpu=27, cpticks=3, pctcpu=0.1 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73174 66406 79558 0 2 0 syz-executor.1 73174 518042 79558 0 3 0x4000080 fsleep syz-executor.1 73174 447352 79558 0 2 0x4000000 syz-executor.1 65572 140972 1 0 3 0x100083 ttyin getty 30071 451469 40896 0 3 0x82 nanosleep syz-executor.0 79558 363571 40896 0 3 0x82 nanosleep syz-executor.1 72484 144429 0 0 3 0x14200 bored sosplice 40896 391691 98342 0 3 0x82 thrsleep syz-fuzzer 40896 281843 98342 0 3 0x4000082 thrsleep syz-fuzzer 40896 305063 98342 0 3 0x4000082 thrsleep syz-fuzzer 40896 504335 98342 0 3 0x4000082 thrsleep syz-fuzzer 40896 453337 98342 0 3 0x4000082 thrsleep syz-fuzzer 40896 249155 98342 0 3 0x4000082 thrsleep syz-fuzzer 40896 159652 98342 0 3 0x4000082 thrsleep syz-fuzzer 40896 256382 98342 0 3 0x4000082 kqread syz-fuzzer 40896 220889 98342 0 3 0x4000082 thrsleep syz-fuzzer 40896 43503 98342 0 3 0x4000082 thrsleep syz-fuzzer 98342 53073 45650 0 3 0x10008a pause ksh 45650 58584 55160 0 3 0x92 select sshd 55160 482141 1 0 3 0x80 select sshd 71018 204381 89823 73 7 0x100090 syslogd 89823 328043 1 0 3 0x100082 netio syslogd 21388 4578 1 77 3 0x100090 poll dhclient 38551 269349 1 0 3 0x80 poll dhclient 49599 16494 0 0 2 0x14200 zerothread 23928 507382 0 0 3 0x14200 aiodoned aiodoned 59164 24350 0 0 3 0x14200 syncer update 59913 467544 0 0 3 0x14200 cleaner cleaner 39960 426750 0 0 3 0x14200 reaper reaper 6108 143459 0 0 3 0x14200 pgdaemon pagedaemon 13442 312822 0 0 3 0x14200 bored crynlk 82139 403748 0 0 3 0x14200 bored crypto 46798 145391 0 0 3 0x40014200 acpi0 acpi0 24951 98055 0 0 3 0x40014200 idle1 80375 170391 0 0 3 0x14200 bored softnet 9656 61493 0 0 3 0x14200 bored systqmp 98713 315056 0 0 3 0x14200 bored systq 44345 348116 0 0 3 0x40014200 bored softclock 5080 373977 0 0 3 0x40014200 idle0 1 234604 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9515 6363K 6363K 78643K 10904 0 0 pcb 25 9K 10K 78643K 539 0 0 rtable 100 3K 4K 78643K 390 0 0 ifaddr 55 13K 14K 78643K 138 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 24 0 0 iov 0 0K 32K 78643K 68 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1193 75K 75K 78643K 1730 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 16 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 108 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 6 17K 25K 78643K 803 0 0 sigio 0 0K 0K 78643K 4 0 0 proc 42 38K 58K 78643K 422 0 0 subproc 64 65538K 67586K 78643K 170 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 64 0 0 in_multi 33 2K 2K 78643K 90 0 0 ether_multi 1 0K 0K 78643K 6 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 234 0 0 pfkey data 0 0K 0K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 87 20K 29K 78643K 3306 0 0 UVM aobj 28 2K 2K 78643K 34 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 33 0 0 NDP 11 0K 0K 78643K 42 0 0 temp 162 2363K 2432K 78643K 5164 0 0 kqueue 0 0K 0K 78643K 18 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 3 1 0 1 1 0 8 0 inpcbpl 280 376 0 369 1 0 1 1 0 8 0 plimitpl 152 29 0 22 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 68 0 28 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 125 0 121 1 0 1 1 0 8 0 nd6 48 10 0 6 1 0 1 1 0 8 0 ppxss 1128 8 0 8 4 3 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 314 0 126 12 0 12 12 0 8 0 art_table 32 315 0 126 2 0 2 2 0 8 0 art_node 16 67 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 102 0 92 1 0 1 1 0 8 0 shmpl 112 32 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2931 0 1522 46 0 46 46 0 8 0 ffsino 272 2931 0 1522 96 1 95 95 0 8 0 nchpl 144 4281 0 2670 61 0 61 61 0 8 0 uvmvnodes 72 3107 0 0 57 0 57 57 0 8 0 vnodes 200 3107 0 0 164 0 164 164 0 8 0 namei 1024 12453 0 12453 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 12616 0 12616 11 10 1 5 0 8 1 sigapl 432 963 0 949 2 0 2 2 0 8 0 futexpl 56 8695 0 8694 1 0 1 1 0 8 0 knotepl 112 299 0 272 4 3 1 2 0 8 0 kqueuepl 104 253 0 251 1 0 1 1 0 8 0 pipepl 112 662 0 643 4 3 1 2 0 8 0 fdescpl 488 964 0 949 4 2 2 3 0 8 0 filepl 152 5891 0 5793 8 3 5 6 0 8 1 lockfpl 104 291 0 291 3 3 0 1 0 8 0 lockfspl 32 349 0 349 3 2 1 1 0 8 1 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 1494 0 1487 1 0 1 1 0 8 0 zombiepl 144 950 0 949 3 2 1 1 0 8 0 processpl 840 979 0 949 4 0 4 4 0 8 0 procpl 600 2655 0 2614 4 0 4 4 0 8 0 srpgc 64 18 0 18 1 1 0 1 0 8 0 sosppl 128 17 0 17 5 4 1 1 0 8 1 sockpl 384 869 0 850 4 1 3 3 0 8 1 mcl64k 65536 386 0 0 49 1 48 49 0 8 1 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 122 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 510 0 0 28 0 28 28 0 8 0 bufpl 256 6536 0 1027 345 0 345 345 0 8 0 anonpl 16 121878 0 114184 63 27 36 48 0 125 0 amapchunkpl 152 5678 0 5583 18 14 4 9 0 158 0 amappl16 192 5583 0 5179 57 34 23 33 0 8 0 amappl15 184 85 0 83 1 0 1 1 0 8 0 amappl14 176 93 0 90 2 1 1 1 0 8 0 amappl13 168 327 0 322 1 0 1 1 0 8 0 amappl12 160 9 0 9 2 2 0 1 0 8 0 amappl11 152 577 0 566 1 0 1 1 0 8 0 amappl10 144 62 0 58 2 1 1 1 0 8 0 amappl9 136 350 0 347 1 0 1 1 0 8 0 amappl8 128 160 0 140 1 0 1 1 0 8 0 amappl7 120 337 0 330 1 0 1 1 0 8 0 amappl6 112 152 0 143 1 0 1 1 0 8 0 amappl5 104 151 0 139 1 0 1 1 0 8 0 amappl4 96 286 0 262 2 1 1 2 0 8 0 amappl3 88 156 0 150 1 0 1 1 0 8 0 amappl2 80 8607 0 8544 2 0 2 2 0 8 0 amappl1 72 29184 0 28741 23 13 10 19 0 8 0 amappl 72 2894 0 2856 1 0 1 1 0 75 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 33 0 6 1 0 1 1 0 8 0 uaddrrnd 24 964 0 949 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 964 0 949 1 0 1 1 0 8 0 vmmpekpl 168 11793 0 11770 2 0 2 2 0 8 0 vmmpepl 168 112671 0 111220 110 46 64 82 0 357 0 vmsppl 360 963 0 949 2 0 2 2 0 8 0 pdppl 4096 1936 0 1898 7 2 5 6 0 8 0 pvpl 32 352011 0 340749 161 61 100 126 0 265 6 pmappl 224 963 0 949 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 565 0 8 16 0 16 16 0 8 0