uvm_fault(0xfffffd807f00d708, 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(0xfffffd807f00d708, 0x8f, 0, 1) -> e wsmuxclose(4500,3,2000,ffff800020b42018) at wsmuxclose+117 end trace frame: 0xffff800020c31730, count: 0 ddb{0}> trace wsmuxclose(4500,3,2000,ffff800020b42018) at wsmuxclose+117 spec_close(ffff800020c31740) at spec_close+928 VOP_CLOSE(fffffd8072220da0,3,fffffd807f7c7480,ffff800020b42018) at VOP_CLOSE+112 vn_closefile(fffffd80724e2dc8,ffff800020b42018) at vn_closefile+352 fdrop(fffffd80724e2dc8,ffff800020b42018) at fdrop+225 closef(fffffd80724e2dc8,ffff800020b42018) at closef+297 fdfree(ffff800020b42018) at fdfree+232 exit1(ffff800020b42018,0,1) at exit1+750 sys_exit(ffff800020b42018,ffff800020c31a40,ffff800020c31a30) at sys_exit+23 syscall(ffff800020c31ae0) at syscall+1452 Xsyscall(6,1,0,1,0,7f7ffffeab64) at Xsyscall+296 end of kernel end trace frame: 0x7f7ffffeab30, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 18446603336770852544 rbx 0 rdx 18446744071594832722 substchar+84905 rcx 0 rax 0 r8 18446744071579099333 setrunnable+149 r9 5 r10 4 r11 3408843789644935135 r12 18446603336221355264 r13 0 r14 18446603336221355344 r15 18446744073709551615 rip 18446744071589306069 wsmuxclose+117 cs 8 rflags 66118 __ALIGN_SIZE+62022 rsp 18446603336770852480 ss 16 wsmuxclose+117: cmpq %r12,144(%r15) ddb{0}> show proc PROC (syz-executor.1) pid=407695 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b42978,0xffff800020b43798 process=0xffff800020b449e8 user=0xffff800020c2c000, vmspace=0xfffffd807f00d708 estcpu=36, cpticks=12, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 43108 270041 53159 0 7 0 syz-executor.0 43108 422395 53159 0 2 0x4000000 syz-executor.0 24641 491629 0 0 3 0x14200 bored sosplice 48547 95553 1 0 3 0x100083 ttyin getty 58024 480890 70504 0 2 0x482 syz-executor.1 53159 181447 70504 0 3 0x82 nanosleep syz-executor.0 70504 117366 70093 0 3 0x82 thrsleep syz-fuzzer 70504 440028 70093 0 3 0x4000082 thrsleep syz-fuzzer 70504 348210 70093 0 3 0x4000082 thrsleep syz-fuzzer 70504 373167 70093 0 3 0x4000082 thrsleep syz-fuzzer 70504 200256 70093 0 3 0x4000082 thrsleep syz-fuzzer 70504 134700 70093 0 3 0x4000082 thrsleep syz-fuzzer 70504 203934 70093 0 3 0x4000082 thrsleep syz-fuzzer 70504 372194 70093 0 3 0x4000082 thrsleep syz-fuzzer 70504 439087 70093 0 3 0x4000082 kqread syz-fuzzer 70504 10129 70093 0 3 0x4000082 thrsleep syz-fuzzer 70093 141536 92673 0 3 0x10008a pause ksh 92673 430967 29165 0 3 0x92 select sshd 29165 307171 1 0 3 0x80 select sshd 59971 150592 81544 73 2 0x100090 syslogd 81544 354402 1 0 3 0x100082 netio syslogd 54189 244149 1 77 3 0x100090 poll dhclient 66821 267197 1 0 3 0x80 poll dhclient 12358 467275 0 0 2 0x14200 zerothread 327 451793 0 0 3 0x14200 aiodoned aiodoned 66191 165110 0 0 3 0x14200 syncer update 14543 125710 0 0 3 0x14200 cleaner cleaner 7834 130603 0 0 3 0x14200 reaper reaper 73311 187187 0 0 3 0x14200 pgdaemon pagedaemon 39893 27052 0 0 3 0x14200 bored crynlk 36510 395312 0 0 3 0x14200 bored crypto 82007 225230 0 0 3 0x40014200 acpi0 acpi0 32095 114814 0 0 3 0x40014200 idle1 1159 294761 0 0 3 0x14200 bored softnet 90549 89456 0 0 3 0x14200 bored systqmp 24152 26794 0 0 3 0x14200 bored systq 51226 43374 0 0 3 0x40014200 bored softclock 55901 295130 0 0 3 0x40014200 idle0 1 391518 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 9487 6353K 6353K 78643K 10656 0 0 pcb 23 9K 10K 78643K 248 0 0 rtable 100 3K 4K 78643K 207 0 0 ifaddr 45 11K 11K 78643K 64 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 19 0 0 iov 0 0K 12K 78643K 31 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1197 75K 75K 78643K 1374 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 12 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 51 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 6 17K 25K 78643K 298 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 41 38K 70K 78643K 311 0 0 subproc 64 65538K 67586K 78643K 72 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 22 0 0 in_multi 33 2K 2K 78643K 40 0 0 ether_multi 1 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 198 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 84 20K 29K 78643K 1738 0 0 UVM aobj 21 2K 3K 78643K 23 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 4 0 0 NDP 8 0K 0K 78643K 17 0 0 temp 120 2357K 2423K 78643K 3538 0 0 kqueue 0 0K 0K 78643K 2 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 4 0 0 1 0 1 1 0 8 0 inpcbpl 280 156 0 149 1 0 1 1 0 8 0 plimitpl 152 15 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 41 0 1 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 56 0 52 1 0 1 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 185 0 0 12 0 12 12 0 8 0 art_table 32 186 0 0 2 0 2 2 0 8 0 art_node 16 40 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 49 0 39 1 0 1 1 0 8 0 shmpl 112 21 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1975 0 566 46 0 46 46 0 8 0 ffsino 272 1975 0 566 95 0 95 95 0 8 0 nchpl 144 2609 0 986 61 0 61 61 0 8 0 uvmvnodes 72 2037 0 0 38 0 38 38 0 8 0 vnodes 200 2037 0 0 108 0 108 108 0 8 0 namei 1024 6893 0 6893 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 6630 0 6630 8 7 1 6 0 8 1 sigapl 432 467 0 453 2 0 2 2 0 8 0 futexpl 56 3458 0 3458 1 0 1 1 0 8 1 knotepl 112 129 0 102 2 1 1 2 0 8 0 kqueuepl 104 88 0 86 1 0 1 1 0 8 0 pipepl 112 292 0 273 2 1 1 1 0 8 0 fdescpl 488 468 0 453 3 1 2 3 0 8 0 filepl 152 2696 0 2599 6 1 5 5 0 8 1 lockfpl 104 122 0 122 2 1 1 1 0 8 1 lockfspl 32 221 0 221 2 1 1 1 0 8 1 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 18 0 8 1 0 1 1 0 8 0 ucredpl 96 572 0 565 1 0 1 1 0 8 0 zombiepl 144 454 0 453 2 1 1 1 0 8 0 processpl 840 483 0 453 4 0 4 4 0 8 0 procpl 600 1141 0 1101 4 0 4 4 0 8 0 sosppl 128 3 0 3 1 1 0 1 0 8 0 sockpl 384 366 0 349 3 0 3 3 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 104 0 0 12 0 12 12 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 123 0 0 8 0 8 8 0 8 0 bufpl 256 5785 0 1015 299 0 299 299 0 8 0 anonpl 16 63518 0 55910 55 8 47 47 0 125 16 amapchunkpl 152 2641 0 2541 9 4 5 9 0 158 0 amappl16 192 2450 0 2060 45 13 32 32 0 8 12 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 8 0 5 2 1 1 1 0 8 0 amappl13 168 35 0 29 1 0 1 1 0 8 0 amappl12 160 11 0 11 1 1 0 1 0 8 0 amappl11 152 180 0 171 1 0 1 1 0 8 0 amappl10 144 620 0 611 2 1 1 1 0 8 0 amappl9 136 352 0 349 1 0 1 1 0 8 0 amappl8 128 139 0 122 1 0 1 1 0 8 0 amappl7 120 38 0 32 1 0 1 1 0 8 0 amappl6 112 58 0 50 1 0 1 1 0 8 0 amappl5 104 127 0 116 1 0 1 1 0 8 0 amappl4 96 271 0 249 2 1 1 2 0 8 0 amappl3 88 139 0 133 1 0 1 1 0 8 0 amappl2 80 3426 0 3365 2 0 2 2 0 8 0 amappl1 72 18515 0 18082 23 13 10 19 0 8 0 amappl 72 1358 0 1320 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 22 0 2 1 0 1 1 0 8 0 uaddrrnd 24 468 0 453 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 468 0 453 1 0 1 1 0 8 0 vmmpekpl 168 7563 0 7541 2 0 2 2 0 8 0 vmmpepl 168 56426 0 55006 90 21 69 72 0 357 7 vmsppl 360 467 0 453 2 0 2 2 0 8 0 pdppl 4096 943 0 906 6 1 5 6 0 8 0 pvpl 32 185259 0 174609 140 18 122 122 0 265 35 pmappl 224 467 0 453 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 446 0 4 13 0 13 13 0 8 0