uvm_fault(0xfffffd807f00cb40, 0x8f, 0, 1) -> e kernel: page fault trap, code=0 Stopped at wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807f00cb40, 0x8f, 0, 1) -> e wsmuxclose(4500,81,2000,ffff800020b42978) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(4500,81,2000,ffff800020b42978) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 end trace frame: 0xffff800020c1cd30, count: 0 ddb{1}> trace wsmuxclose(4500,81,2000,ffff800020b42978) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(4500,81,2000,ffff800020b42978) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 spec_close(ffff800020c1cd40) at spec_close+0x3a0 sys/kern/spec_vnops.c:553 VOP_CLOSE(fffffd8075987d10,81,fffffd807f7c78a0,ffff800020b42978) at VOP_CLOSE+0x70 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8069330998,ffff800020b42978) at vn_closefile+0x160 vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(fffffd8069330998,ffff800020b42978) at vn_closefile+0x160 sys/kern/vfs_vnops.c:575 fdrop(fffffd8069330998,ffff800020b42978) at fdrop+0xe1 sys/kern/kern_descrip.c:1260 closef(fffffd8069330998,ffff800020b42978) at closef+0x129 sys/kern/kern_descrip.c:1244 fdfree(ffff800020b42978) at fdfree+0xe8 sys/kern/kern_descrip.c:1176 exit1(ffff800020b42978,0,1) at exit1+0x2ee sys/kern/kern_exit.c:194 sys_exit(ffff800020b42978,ffff800020c1d040,ffff800020c1d030) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800020c1d0e0) at syscall+0x5ac mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c1d0e0) at syscall+0x5ac sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,1,0,1,0,7f7ffffee244) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffee210, count: -11 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020c1ccc0 rbx 0 rdx 0xffffffff81f72fba cy_pio_rec+0x1f030 rcx 0 rax 0 r8 0 r9 0x1 r10 0x111831eaa0463d71 r11 0xc609da2b290d6c84 r12 0xffff800000026d00 r13 0 r14 0xffff800000026d50 r15 0xffffffffffffffff rip 0xffffffff8161f9e5 wsmuxclose+0x75 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020c1cc80 ss 0x10 wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{1}> show proc PROC (syz-executor.1) pid=12089 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b424c8,0xffff800020b42280 process=0xffff800020b453c0 user=0xffff800020c18000, vmspace=0xfffffd807f00cb40 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88887 172307 71415 0 7 0 syz-executor.0 88887 341090 71415 0 2 0x4000080 syz-executor.0 47248 387426 1 0 3 0x100083 ttyin getty 60901 486508 0 0 3 0x14200 bored sosplice 39591 53602 76612 0 3 0x82 nanosleep syz-executor.1 71415 7303 76612 0 3 0x82 nanosleep syz-executor.0 76612 32866 38951 0 3 0x82 thrsleep syz-fuzzer 76612 245560 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 44214 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 482581 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 492717 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 169984 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 111347 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 398014 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 186447 38951 0 3 0x4000082 thrsleep syz-fuzzer 76612 1137 38951 0 3 0x4000082 kqread syz-fuzzer 38951 408743 84867 0 3 0x10008a pause ksh 84867 66970 68078 0 3 0x92 select sshd 68078 240653 1 0 3 0x80 select sshd 5211 392131 97961 73 2 0x100090 syslogd 97961 418928 1 0 3 0x100082 netio syslogd 98520 354211 1 77 3 0x100090 poll dhclient 94175 240668 1 0 3 0x80 poll dhclient 41661 453223 0 0 3 0x14200 pgzero zerothread 82699 473621 0 0 3 0x14200 aiodoned aiodoned 3339 269959 0 0 3 0x14200 syncer update 42161 523447 0 0 3 0x14200 cleaner cleaner 1908 356793 0 0 3 0x14200 reaper reaper 42789 15279 0 0 3 0x14200 pgdaemon pagedaemon 4712 120159 0 0 3 0x14200 bored crynlk 64934 516052 0 0 3 0x14200 bored crypto 3863 240196 0 0 3 0x40014200 acpi0 acpi0 12870 248340 0 0 3 0x40014200 idle1 84756 458495 0 0 3 0x14200 bored softnet 8764 509243 0 0 3 0x14200 bored systqmp 76912 450074 0 0 3 0x14200 bored systq 40546 134459 0 0 3 0x40014200 bored softclock 97994 362057 0 0 3 0x40014200 idle0 1 640 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9517 6362K 6374K 78643K 11029 0 0 pcb 23 9K 11K 78643K 782 0 0 rtable 100 3K 4K 78643K 291 0 0 ifaddr 51 12K 12K 78643K 115 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 32 0 0 iov 0 0K 16K 78643K 155 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1214 76K 76K 78643K 2017 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 25 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 197 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 6 17K 25K 78643K 1603 0 0 sigio 0 0K 0K 78643K 27 0 0 proc 43 38K 58K 78643K 486 0 0 subproc 64 65538K 67586K 78643K 86 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 185 0 0 in_multi 33 2K 2K 78643K 131 0 0 ether_multi 1 0K 0K 78643K 23 0 0 mrt 0 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 108 477K 477K 78643K 108 0 0 exec 0 0K 1K 78643K 293 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 92 21K 30K 78643K 5848 0 0 UVM aobj 87 3K 3K 78643K 98 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 44 0 0 NDP 10 0K 0K 78643K 31 0 0 temp 156 2367K 2438K 78643K 6809 0 0 kqueue 0 0K 0K 78643K 9 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> 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 1023 0 1016 1 0 1 1 0 8 0 plimitpl 152 28 0 21 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 544 273 0 269 1 0 1 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 11 0 11 8 8 0 1 0 8 0 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 sysvmsgpl 40 10 0 8 3 2 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 193 0 183 1 0 1 1 0 8 0 shmpl 112 96 0 11 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4300 0 2875 47 0 47 47 0 8 0 ffsino 272 4300 0 2875 97 1 96 96 0 8 0 nchpl 144 6812 0 5188 61 0 61 61 0 8 0 uvmvnodes 72 4463 0 0 82 0 82 82 0 8 0 vnodes 200 4463 0 0 235 0 235 235 0 8 0 namei 1024 19585 0 19585 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 4 0 4 4 4 0 1 0 8 0 scxspl 192 19134 0 19134 12 11 1 5 0 8 1 sigapl 432 1772 0 1758 2 0 2 2 0 8 0 futexpl 56 16773 0 16773 1 0 1 1 0 8 1 knotepl 112 363 0 336 2 1 1 2 0 8 0 kqueuepl 104 467 0 465 1 0 1 1 0 8 0 pipepl 112 1004 0 985 5 4 1 2 0 8 0 fdescpl 488 1773 0 1758 3 1 2 3 0 8 0 filepl 152 10344 0 10248 9 4 5 5 0 8 1 lockfpl 104 579 0 579 2 1 1 1 0 8 1 lockfspl 32 976 0 976 2 1 1 1 0 8 1 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 46 0 36 1 0 1 1 0 8 0 ucredpl 96 2739 0 2732 1 0 1 1 0 8 0 zombiepl 144 1759 0 1758 2 1 1 1 0 8 0 processpl 840 1788 0 1758 4 0 4 4 0 8 0 procpl 600 5213 0 5173 4 0 4 4 0 8 0 sosppl 128 25 0 25 9 9 0 1 0 8 0 sockpl 384 1707 0 1690 4 1 3 4 0 8 1 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 116 0 0 14 0 14 14 0 8 0 mtagpl 80 2 0 0 1 0 1 1 0 8 0 mbufpl 256 154 0 0 8 0 8 8 0 8 0 bufpl 256 7868 0 1029 428 0 428 428 0 8 0 anonpl 16 168283 0 160178 90 41 49 49 0 125 15 amapchunkpl 152 9801 0 9706 25 16 9 9 0 158 5 amappl16 192 8770 0 8344 72 42 30 34 0 8 8 amappl15 184 4 0 2 1 0 1 1 0 8 0 amappl14 176 848 0 844 2 1 1 1 0 8 0 amappl13 168 771 0 766 1 0 1 1 0 8 0 amappl12 160 13 0 11 1 0 1 1 0 8 0 amappl11 152 181 0 172 1 0 1 1 0 8 0 amappl10 144 59 0 56 2 1 1 1 0 8 0 amappl9 136 356 0 352 1 0 1 1 0 8 0 amappl8 128 146 0 125 1 0 1 1 0 8 0 amappl7 120 38 0 32 1 0 1 1 0 8 0 amappl6 112 893 0 885 1 0 1 1 0 8 0 amappl5 104 133 0 122 1 0 1 1 0 8 0 amappl4 96 1029 0 1003 2 1 1 2 0 8 0 amappl3 88 175 0 168 1 0 1 1 0 8 0 amappl2 80 16480 0 16418 2 0 2 2 0 8 0 amappl1 72 45894 0 45462 23 13 10 19 0 8 0 amappl 72 5432 0 5394 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 97 0 11 2 0 2 2 0 8 0 uaddrrnd 24 1773 0 1758 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1773 0 1758 1 0 1 1 0 8 0 vmmpekpl 168 17477 0 17456 2 0 2 2 0 8 0 vmmpepl 168 194522 0 193059 107 36 71 74 0 357 5 vmsppl 360 1772 0 1758 2 0 2 2 0 8 0 pdppl 4096 3553 0 3516 6 1 5 6 0 8 0 pvpl 32 501624 0 490449 202 71 131 131 0 265 38 pmappl 224 1772 0 1758 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 580 0 4 17 0 17 17 0 8 0