uvm_fault(0xfffffd807f00db40, 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}> show panic kernel page fault uvm_fault(0xfffffd807f00db40, 0x8f, 0, 1) -> e wsmuxclose(a190205509f5129,ffffffff81617730,ffff800020c7f940,fffffd806e6cec90) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(a190205509f5129,ffffffff81617730,ffff800020c7f940,fffffd806e6cec90) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 end trace frame: 0xffff800020c7f930, count: 0 ddb{1}> trace wsmuxclose(a190205509f5129,ffffffff81617730,ffff800020c7f940,fffffd806e6cec90) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(a190205509f5129,ffffffff81617730,ffff800020c7f940,fffffd806e6cec90) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 spec_close(d545dd83b34f864d) at spec_close+0x39a sys/kern/spec_vnops.c:553 VOP_CLOSE(c4acb738daaad119,fffffd806e6cec90,ffff800020b93c38,fffffd807f7c7b40) at VOP_CLOSE+0x6c sys/kern/vfs_vops.c:174 vn_closefile(52ed726a56e71a0c,ffff800020b93c38) at vn_closefile+0x150 vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(52ed726a56e71a0c,ffff800020b93c38) at vn_closefile+0x150 sys/kern/vfs_vnops.c:575 fdrop(d3d18a7f3aea4ed4,fffffd806d3961d8) at fdrop+0xdf sys/kern/kern_descrip.c:1260 closef(d95633341446ef76,ffff800020b93c38) at closef+0x128 sys/kern/kern_descrip.c:1244 fdfree(9f3135e37edf7026) at fdfree+0xe8 sys/kern/kern_descrip.c:1176 exit1(0,ffff800020b93c38,7f7ffffeaac8) at exit1+0x2d7 sys/kern/kern_exit.c:194 sys_exit(ffffffff81961703,ffff800020c7fb40,0) at sys_exit+0x13 sys/kern/kern_exit.c:94 syscall(14f8b45faa7e08e3) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(14f8b45faa7e08e3) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,1,0,1,0,7f7ffffeab04) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeaad0, count: -11 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020c7f8e0 rbx 0 rdx 0xffffffff81f1fbe5 substchar+0x1540d rcx 0x1d5 rax 0 r8 0xffffffff816da4a4 setrunnable+0x94 r9 0x5 r10 0xeb074ba02b94a9d7 r11 0x4ea7e8fe3424ee8c r12 0xffff800000026d00 r13 0 r14 0xffff800000026d50 r15 0xffffffffffffffff rip 0xffffffff816177a5 wsmuxclose+0x75 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020c7f8c0 ss 0x10 wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{1}> show proc PROC (syz-executor0) pid=349925 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b752c8,0xffff800020b93540 process=0xffff800020b946a0 user=0xffff800020c7a000, vmspace=0xfffffd807f00db40 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 89699 218409 68365 0 7 0 syz-executor1 89699 210892 68365 0 2 0x4000000 syz-executor1 68365 210524 86335 0 3 0x82 nanosleep syz-executor1 69290 163883 86335 0 3 0x82 nanosleep syz-executor0 86335 385689 35343 0 3 0x82 thrsleep syz-execprog 86335 147761 35343 0 3 0x4000082 thrsleep syz-execprog 86335 20131 35343 0 3 0x4000082 thrsleep syz-execprog 86335 273778 35343 0 3 0x4000082 thrsleep syz-execprog 86335 359623 35343 0 3 0x4000082 thrsleep syz-execprog 86335 236156 35343 0 3 0x4000082 thrsleep syz-execprog 86335 33495 35343 0 3 0x4000082 thrsleep syz-execprog 86335 260037 35343 0 3 0x4000082 kqread syz-execprog 86335 314025 35343 0 3 0x4000082 thrsleep syz-execprog 35343 86170 89462 0 3 0x10008a pause ksh 89462 291726 77293 0 3 0x92 select sshd 82290 308048 1 0 3 0x100083 ttyin getty 77293 417648 1 0 3 0x80 select sshd 71329 427927 53575 73 2 0x100090 syslogd 53575 337155 1 0 3 0x100082 netio syslogd 18590 55896 1 77 3 0x100090 poll dhclient 27204 186139 1 0 3 0x80 poll dhclient 48834 430464 0 0 2 0x14200 zerothread 35344 518859 0 0 3 0x14200 aiodoned aiodoned 85873 12182 0 0 3 0x14200 syncer update 98588 243751 0 0 3 0x14200 cleaner cleaner 28802 396324 0 0 3 0x14200 reaper reaper 9839 449517 0 0 3 0x14200 pgdaemon pagedaemon 70635 364917 0 0 3 0x14200 bored crynlk 48669 239875 0 0 3 0x14200 bored crypto 44 24815 0 0 3 0x40014200 acpi0 acpi0 70107 79355 0 0 3 0x40014200 idle1 81773 454968 0 0 3 0x14200 bored softnet 98520 44126 0 0 3 0x14200 bored systqmp 39135 403922 0 0 3 0x14200 bored systq 41176 112084 0 0 3 0x40014200 bored softclock 60074 389907 0 0 3 0x40014200 idle0 1 144249 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 9454 6336K 6336K 78643K 10613 0 0 pcb 23 9K 9K 78643K 55 0 0 rtable 97 3K 3K 78643K 167 0 0 ifaddr 34 9K 9K 78643K 34 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 15 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1166 73K 73K 78643K 1220 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 6 17K 25K 78643K 46 0 0 proc 40 38K 70K 78643K 241 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 33 2K 2K 78643K 33 0 0 ether_multi 1 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 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 165 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 72 19K 20K 78643K 874 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 9 0K 0K 78643K 9 0 0 temp 46 2350K 2414K 78643K 2741 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 26 0 20 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 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 186 0 0 12 0 12 12 0 8 0 art_table 32 187 0 0 2 0 2 2 0 8 0 art_node 16 40 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1507 0 121 45 0 45 45 0 8 0 ffsino 272 1507 0 121 93 0 93 93 0 8 0 nchpl 144 1751 0 163 59 0 59 59 0 8 0 uvmvnodes 72 1516 0 0 28 0 28 28 0 8 0 vnodes 200 1516 0 0 80 0 80 80 0 8 0 namei 1024 3937 0 3937 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 3821 0 3821 12 11 1 6 0 8 1 sigapl 432 217 0 203 2 0 2 2 0 8 0 futexpl 56 321 0 321 1 0 1 1 0 8 1 knotepl 112 63 0 38 2 0 2 2 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 112 138 0 119 3 2 1 1 0 8 0 fdescpl 488 218 0 203 3 0 3 3 0 8 1 filepl 152 1058 0 995 3 0 3 3 0 8 0 lockfpl 104 6 0 6 1 1 0 1 0 8 0 lockfspl 32 3 0 3 1 1 0 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 204 0 203 3 2 1 1 0 8 0 processpl 840 232 0 203 4 0 4 4 0 8 0 procpl 600 298 0 260 4 0 4 4 0 8 0 sockpl 384 68 0 52 2 0 2 2 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 7 0 7 7 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 109 0 0 6 0 6 6 0 8 0 bufpl 256 4823 0 965 242 0 242 242 0 8 0 anonpl 16 21294 0 19729 15 2 13 13 0 125 6 amapchunkpl 152 867 0 798 5 0 5 5 0 158 2 amappl16 192 274 0 231 3 0 3 3 0 8 0 amappl15 184 4 0 2 1 0 1 1 0 8 0 amappl14 176 1 0 1 1 1 0 1 0 8 0 amappl13 168 20 0 17 1 0 1 1 0 8 0 amappl12 160 35 0 29 2 1 1 1 0 8 0 amappl11 152 209 0 197 1 0 1 1 0 8 0 amappl10 144 63 0 61 3 2 1 1 0 8 0 amappl9 136 218 0 216 1 0 1 1 0 8 0 amappl8 128 147 0 131 1 0 1 1 0 8 0 amappl7 120 36 0 31 1 0 1 1 0 8 0 amappl6 112 48 0 42 1 0 1 1 0 8 0 amappl5 104 120 0 110 1 0 1 1 0 8 0 amappl4 96 297 0 275 2 0 2 2 0 8 1 amappl3 88 132 0 126 1 0 1 1 0 8 0 amappl2 80 930 0 870 2 0 2 2 0 8 0 amappl1 72 13225 0 12791 24 6 18 19 0 8 8 amappl 72 513 0 480 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 218 0 203 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 218 0 203 1 0 1 1 0 8 0 vmmpekpl 168 5968 0 5943 2 0 2 2 0 8 0 vmmpepl 168 28464 0 27477 87 16 71 71 0 357 28 vmsppl 360 217 0 203 2 0 2 2 0 8 0 pdppl 4096 443 0 406 6 0 6 6 0 8 1 pvpl 32 99732 0 95760 101 9 92 92 0 265 59 pmappl 224 217 0 203 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 377 0 4 11 0 11 11 0 8 0