login: uvm_fault(0xfffffd807f00d2d0, 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}> show panic kernel page fault uvm_fault(0xfffffd807f00d2d0, 0x8f, 0, 1) -> e wsmuxclose(60c5388eb643422f,ffffffff81617730,ffff800020c7b310,fffffd806e4d2660) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(60c5388eb643422f,ffffffff81617730,ffff800020c7b310,fffffd806e4d2660) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 end trace frame: 0xffff800020c7b300, count: 0 ddb{0}> trace wsmuxclose(60c5388eb643422f,ffffffff81617730,ffff800020c7b310,fffffd806e4d2660) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(60c5388eb643422f,ffffffff81617730,ffff800020c7b310,fffffd806e4d2660) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 spec_close(82e51f100c1052b) at spec_close+0x39a sys/kern/spec_vnops.c:553 VOP_CLOSE(513a0383c2a915b,fffffd806e4d2660,ffff800020b92270,fffffd807f7c7c00) at VOP_CLOSE+0x6c sys/kern/vfs_vops.c:174 vn_closefile(5c5ed7b1bc8b01c7,ffff800020b92270) at vn_closefile+0x150 vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(5c5ed7b1bc8b01c7,ffff800020b92270) at vn_closefile+0x150 sys/kern/vfs_vnops.c:575 fdrop(36fce6b69c8d8d8a,fffffd8069414dc0) at fdrop+0xdf sys/kern/kern_descrip.c:1260 closef(186a4e480f01129b,ffff800020b92270) at closef+0x128 sys/kern/kern_descrip.c:1244 fdfree(21e7ab5d98c94f61) at fdfree+0xe8 sys/kern/kern_descrip.c:1176 exit1(0,ffff800020b92270,7f7ffffbdb88) at exit1+0x2d7 sys/kern/kern_exit.c:194 sys_exit(ffffffff81961703,ffff800020c7b510,0) at sys_exit+0x13 sys/kern/kern_exit.c:94 syscall(c6ddad2299818751) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(c6ddad2299818751) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:574 Xsyscall(0,1,0,1,0,7f7ffffbdbc4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbdb90, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020c7b2b0 rbx 0 rdx 0xffffffff81f52d1a cy_pio_rec+0x1f938 rcx 0 rax 0 r8 0 r9 0 r10 0xffff800020c97d10 r11 0xcd2b827a6b8adc31 r12 0xffff800000026d00 r13 0 r14 0xffff800000026d50 r15 0xffffffffffffffff rip 0xffffffff816177a5 wsmuxclose+0x75 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020c7b290 ss 0x10 wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{0}> show proc PROC (syz-executor0) pid=509470 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800020b93788,0xffff800020b92730 process=0xffff800020b94358 user=0xffff800020c76000, vmspace=0xfffffd807f00d2d0 estcpu=24, cpticks=1, pctcpu=2.3 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16449 5728 11511 0 2 0 syz-executor1 16449 216632 11511 0 2 0x4000000 syz-executor1 16449 244571 11511 0 2 0x4000000 syz-executor1 72101 513860 1 0 3 0x100083 ttyin getty 97133 78200 0 0 3 0x14200 bored sosplice 11511 188338 93191 0 3 0x82 nanosleep syz-executor1 23288 200895 93191 0 3 0x82 nanosleep syz-executor0 93191 248092 61199 0 3 0x82 thrsleep syz-fuzzer 93191 322533 61199 0 3 0x4000082 nanosleep syz-fuzzer 93191 480060 61199 0 3 0x4000082 thrsleep syz-fuzzer 93191 359358 61199 0 3 0x4000082 thrsleep syz-fuzzer 93191 110686 61199 0 3 0x4000082 thrsleep syz-fuzzer 93191 40979 61199 0 3 0x4000082 thrsleep syz-fuzzer 93191 175661 61199 0 3 0x4000082 kqread syz-fuzzer 93191 226911 61199 0 3 0x4000082 thrsleep syz-fuzzer 93191 16466 61199 0 3 0x4000082 thrsleep syz-fuzzer 93191 437783 61199 0 3 0x4000082 thrsleep syz-fuzzer 61199 382809 59122 0 3 0x10008a pause ksh 59122 429392 73880 0 3 0x92 select sshd 73880 247662 1 0 3 0x80 select sshd 60987 327629 61181 73 7 0x100090 syslogd 61181 464240 1 0 3 0x100082 netio syslogd 6957 205779 1 77 3 0x100090 poll dhclient 76394 344900 1 0 3 0x80 poll dhclient 25941 335360 0 0 3 0x14200 pgzero zerothread 98908 267009 0 0 3 0x14200 aiodoned aiodoned 29892 65013 0 0 3 0x14200 syncer update 61846 435546 0 0 3 0x14200 cleaner cleaner 85236 213885 0 0 3 0x14200 reaper reaper 17772 11514 0 0 3 0x14200 pgdaemon pagedaemon 31180 92974 0 0 3 0x14200 bored crynlk 26799 137107 0 0 3 0x14200 bored crypto 41618 216314 0 0 3 0x40014200 acpi0 acpi0 42905 235307 0 0 3 0x40014200 idle1 9161 270811 0 0 3 0x14200 bored softnet 30760 14475 0 0 3 0x14200 bored systqmp 66076 201494 0 0 3 0x14200 bored systq 25319 263651 0 0 3 0x40014200 bored softclock 65901 505249 0 0 3 0x40014200 idle0 1 245714 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 9462 6345K 6361K 78643K 10613 0 0 pcb 28 10K 10K 78643K 188 0 0 rtable 100 3K 4K 78643K 188 0 0 ifaddr 36 10K 10K 78643K 48 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 17 0 0 iov 0 0K 16K 78643K 17 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1200 75K 75K 78643K 1358 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 7 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 26 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 6 17K 25K 78643K 245 0 0 sigio 0 0K 0K 78643K 8 0 0 proc 42 38K 58K 78643K 287 0 0 subproc 64 65538K 67586K 78643K 70 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 40 0 0 in_multi 33 2K 2K 78643K 43 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 60 265K 265K 78643K 60 0 0 exec 0 0K 1K 78643K 177 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 80 20K 21K 78643K 1504 0 0 UVM aobj 11 2K 2K 78643K 15 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 10 0 0 NDP 5 0K 0K 78643K 12 0 0 temp 99 2357K 2425K 78643K 3322 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 280 144 0 137 1 0 1 1 0 8 0 plimitpl 152 17 0 10 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 69 0 65 1 0 1 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 2 0 2 2 2 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 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 13 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1852 0 469 45 0 45 45 0 8 0 ffsino 272 1852 0 469 93 0 93 93 0 8 0 nchpl 144 2395 0 810 59 0 59 59 0 8 0 uvmvnodes 72 1908 0 0 35 0 35 35 0 8 0 vnodes 200 1908 0 0 101 0 101 101 0 8 0 namei 1024 6053 0 6053 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 5825 0 5825 8 7 1 6 0 8 1 sigapl 432 413 0 399 2 0 2 2 0 8 0 futexpl 56 2916 0 2916 1 0 1 1 0 8 1 knotepl 112 117 0 90 2 1 1 2 0 8 0 kqueuepl 104 89 0 85 1 0 1 1 0 8 0 pipepl 112 318 0 295 3 1 2 2 0 8 1 fdescpl 488 414 0 399 3 1 2 3 0 8 0 filepl 152 2529 0 2415 6 1 5 5 0 8 0 lockfpl 104 64 0 64 2 1 1 1 0 8 1 lockfspl 32 21 0 21 2 1 1 1 0 8 1 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 604 0 597 1 0 1 1 0 8 0 zombiepl 144 400 0 399 2 1 1 1 0 8 0 processpl 840 429 0 399 4 0 4 4 0 8 0 procpl 600 940 0 899 4 0 4 4 0 8 0 sosppl 128 7 0 7 2 2 0 1 0 8 0 sockpl 384 312 0 290 3 0 3 3 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 101 0 0 12 0 12 12 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 140 0 0 8 0 8 8 0 8 0 bufpl 256 5514 0 967 285 0 285 285 0 8 0 anonpl 16 46075 0 38437 50 2 48 48 0 125 16 amapchunkpl 152 2099 0 2006 9 4 5 9 0 158 0 amappl16 192 1748 0 1346 34 5 29 33 0 8 8 amappl15 184 5 0 3 1 0 1 1 0 8 0 amappl14 176 4 0 3 2 1 1 1 0 8 0 amappl13 168 23 0 19 1 0 1 1 0 8 0 amappl12 160 131 0 128 1 0 1 1 0 8 0 amappl11 152 185 0 175 1 0 1 1 0 8 0 amappl10 144 278 0 272 2 1 1 1 0 8 0 amappl9 136 339 0 338 1 0 1 1 0 8 0 amappl8 128 261 0 241 1 0 1 1 0 8 0 amappl7 120 33 0 28 1 0 1 1 0 8 0 amappl6 112 48 0 40 1 0 1 1 0 8 0 amappl5 104 124 0 111 1 0 1 1 0 8 0 amappl4 96 279 0 257 2 1 1 2 0 8 0 amappl3 88 134 0 129 1 0 1 1 0 8 0 amappl2 80 2911 0 2849 2 0 2 2 0 8 0 amappl1 72 17255 0 16819 24 14 10 19 0 8 0 amappl 72 1145 0 1108 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 14 0 4 1 0 1 1 0 8 0 uaddrrnd 24 414 0 399 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 414 0 399 1 0 1 1 0 8 0 vmmpekpl 168 7248 0 7227 2 0 2 2 0 8 0 vmmpepl 168 50263 0 48830 90 16 74 74 0 357 11 vmsppl 360 413 0 399 2 0 2 2 0 8 0 pdppl 4096 835 0 798 6 1 5 6 0 8 0 pvpl 32 156119 0 144931 130 6 124 124 0 265 33 pmappl 224 413 0 399 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 427 0 3 13 0 13 13 0 8 0