uvm_fault(0xfffffd807f00d9d8, 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(0xfffffd807f00d9d8, 0x8f, 0, 1) -> e wsmuxclose(5aebe036ac0a4d00,ffffffff81617730,ffff800020c6f520,fffffd806e61ca38) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(5aebe036ac0a4d00,ffffffff81617730,ffff800020c6f520,fffffd806e61ca38) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 end trace frame: 0xffff800020c6f510, count: 0 ddb{1}> trace wsmuxclose(5aebe036ac0a4d00,ffffffff81617730,ffff800020c6f520,fffffd806e61ca38) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(5aebe036ac0a4d00,ffffffff81617730,ffff800020c6f520,fffffd806e61ca38) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 spec_close(967f84d02db6e8d5) at spec_close+0x39a sys/kern/spec_vnops.c:553 VOP_CLOSE(5ae32f35d9d7458e,fffffd806e61ca38,ffff800020b744b8,fffffd807f7c7ba0) at VOP_CLOSE+0x6c sys/kern/vfs_vops.c:174 vn_closefile(6540c0d33900efa1,ffff800020b744b8) at vn_closefile+0x150 vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(6540c0d33900efa1,ffff800020b744b8) at vn_closefile+0x150 sys/kern/vfs_vnops.c:575 fdrop(411b6435e6344578,fffffd806d34e140) at fdrop+0xdf sys/kern/kern_descrip.c:1260 closef(82ce38b1ade8c77e,ffff800020b744b8) at closef+0x128 sys/kern/kern_descrip.c:1244 fdfree(b6a081e3b310440) at fdfree+0xe8 sys/kern/kern_descrip.c:1176 exit1(0,ffff800020b744b8,7f7ffffcdd58) at exit1+0x2d7 sys/kern/kern_exit.c:194 sys_exit(ffffffff81961703,ffff800020c6f720,0) at sys_exit+0x13 sys/kern/kern_exit.c:94 syscall(810e9115f7ec3d9b) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(810e9115f7ec3d9b) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,1,0,1,0,7f7ffffcdd94) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcdd60, count: -11 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020c6f4c0 rbx 0 rdx 0xffffffff81f1fbe5 substchar+0x1540d rcx 0x1d5 rax 0 r8 0xffffffff816da4a4 setrunnable+0x94 r9 0x5 r10 0x7ef16eea76069caf r11 0xba2015e79ccac35 r12 0xffff800000026d00 r13 0 r14 0xffff800000026d50 r15 0xffffffffffffffff rip 0xffffffff816177a5 wsmuxclose+0x75 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020c6f4a0 ss 0x10 wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{1}> show proc PROC (syz-executor1) pid=241543 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b74968,0xffff800020be4278 process=0xffff800020b94358 user=0xffff800020c6a000, vmspace=0xfffffd807f00d9d8 estcpu=36, cpticks=7, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90824 166735 21544 0 2 0 syz-executor0 90824 339106 21544 0 2 0x4000000 syz-executor0 90824 29561 21544 0 2 0x4000000 syz-executor0 30029 478896 34385 0 3 0x82 nanosleep syz-executor1 21544 14870 34385 0 3 0x82 nanosleep syz-executor0 34385 6793 74888 0 3 0x82 kqread syz-execprog 34385 80840 74888 0 3 0x4000082 thrsleep syz-execprog 34385 329501 74888 0 3 0x4000082 thrsleep syz-execprog 34385 215465 74888 0 3 0x4000082 thrsleep syz-execprog 34385 413621 74888 0 3 0x4000082 thrsleep syz-execprog 34385 385435 74888 0 3 0x4000082 thrsleep syz-execprog 34385 144757 74888 0 3 0x4000082 thrsleep syz-execprog 34385 167409 74888 0 3 0x4000082 thrsleep syz-execprog 34385 46238 74888 0 3 0x4000082 thrsleep syz-execprog 74888 370230 61090 0 3 0x10008a pause ksh 61090 284387 98698 0 3 0x92 select sshd 60319 259718 1 0 3 0x100083 ttyin getty 98698 332487 1 0 3 0x80 select sshd 95312 412318 64574 73 7 0x100090 syslogd 64574 474287 1 0 3 0x100082 netio syslogd 47142 299487 1 77 3 0x100090 poll dhclient 60617 338064 1 0 3 0x80 poll dhclient 28637 227788 0 0 3 0x14200 pgzero zerothread 6970 523064 0 0 3 0x14200 aiodoned aiodoned 89908 133267 0 0 3 0x14200 syncer update 52395 179811 0 0 3 0x14200 cleaner cleaner 78973 130318 0 0 3 0x14200 reaper reaper 15974 352759 0 0 3 0x14200 pgdaemon pagedaemon 51259 94194 0 0 3 0x14200 bored crynlk 46024 492713 0 0 3 0x14200 bored crypto 37155 162403 0 0 3 0x40014200 acpi0 acpi0 67897 65559 0 0 3 0x40014200 idle1 36333 141522 0 0 3 0x14200 bored softnet 77705 517328 0 0 3 0x14200 bored systqmp 47348 498782 0 0 3 0x14200 bored systq 54374 458891 0 0 3 0x40014200 bored softclock 19569 396330 0 0 3 0x40014200 idle0 1 313240 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 6352K 78643K 10809 0 0 pcb 29 10K 10K 78643K 580 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 1319 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 106 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 71 19K 20K 78643K 1088 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 5 0K 0K 78643K 9 0 0 temp 46 2350K 2414K 78643K 2861 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 2 0 1 0 8 0 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 256 185 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 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1726 0 340 45 0 45 45 0 8 0 ffsino 272 1726 0 340 93 0 93 93 0 8 0 nchpl 144 2021 0 433 59 0 59 59 0 8 0 uvmvnodes 72 1735 0 0 32 0 32 32 0 8 0 vnodes 200 1735 0 0 92 0 92 92 0 8 0 namei 1024 5827 0 5827 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4438 0 4438 38 37 1 6 0 8 1 sigapl 432 277 0 263 2 0 2 2 0 8 0 futexpl 56 2450 0 2450 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 488 278 0 263 3 1 2 3 0 8 0 filepl 152 3108 0 3035 6 2 4 4 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 144 264 0 263 3 2 1 1 0 8 0 processpl 840 292 0 263 4 0 4 4 0 8 0 procpl 600 516 0 477 4 0 4 4 0 8 0 sockpl 384 593 0 571 3 0 3 3 0 8 0 mcl4k 4096 3 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 256 114 0 0 7 0 7 7 0 8 0 bufpl 256 4883 0 965 245 0 245 245 0 8 0 anonpl 16 25060 0 23067 16 7 9 13 0 125 0 amapchunkpl 152 1307 0 1232 5 2 3 5 0 158 0 amappl16 192 526 0 458 4 0 4 4 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 94 0 89 2 1 1 1 0 8 0 amappl13 168 19 0 16 1 0 1 1 0 8 0 amappl12 160 20 0 18 2 1 1 1 0 8 0 amappl11 152 185 0 176 1 0 1 1 0 8 0 amappl10 144 62 0 61 3 2 1 1 0 8 0 amappl9 136 205 0 204 1 0 1 1 0 8 0 amappl8 128 135 0 121 1 0 1 1 0 8 0 amappl7 120 37 0 31 1 0 1 1 0 8 0 amappl6 112 51 0 43 1 0 1 1 0 8 0 amappl5 104 119 0 109 1 0 1 1 0 8 0 amappl4 96 303 0 281 2 1 1 2 0 8 0 amappl3 88 132 0 125 1 0 1 1 0 8 0 amappl2 80 1525 0 1463 2 0 2 2 0 8 0 amappl1 72 14484 0 14042 22 12 10 18 0 8 0 amappl 72 732 0 697 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 24 278 0 263 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 278 0 263 1 0 1 1 0 8 0 vmmpekpl 168 6418 0 6395 2 0 2 2 0 8 0 vmmpepl 168 33357 0 32342 97 52 45 71 0 357 0 vmsppl 360 277 0 263 2 0 2 2 0 8 0 pdppl 4096 563 0 526 6 1 5 6 0 8 0 pvpl 32 109357 0 104943 101 37 64 93 0 265 28 pmappl 224 277 0 263 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 381 0 5 11 0 11 11 0 8 0