login: uvm_fault(0xfffffd807f00c2d0, 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(0xfffffd807f00c2d0, 0x8f, 0, 1) -> e wsmuxclose(c2a097b65e44350a,ffffffff815397f0,ffff800020c81080,fffffd8064cd5498) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(c2a097b65e44350a,ffffffff815397f0,ffff800020c81080,fffffd8064cd5498) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 end trace frame: 0xffff800020c81070, count: 0 ddb{0}> trace wsmuxclose(c2a097b65e44350a,ffffffff815397f0,ffff800020c81080,fffffd8064cd5498) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(c2a097b65e44350a,ffffffff815397f0,ffff800020c81080,fffffd8064cd5498) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 spec_close(eb4374f42ed33d9e) at spec_close+0x39a sys/kern/spec_vnops.c:553 VOP_CLOSE(f9d455ddc22080a2,fffffd8064cd5498,ffff800020b932d8,fffffd807f7c7ba0) at VOP_CLOSE+0x6c sys/kern/vfs_vops.c:174 vn_closefile(4aaaa5819d43f08f,ffff800020b932d8) at vn_closefile+0x150 vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(4aaaa5819d43f08f,ffff800020b932d8) at vn_closefile+0x150 sys/kern/vfs_vnops.c:575 fdrop(4aaaa5819d43d768,fffffd807bdea608) at fdrop+0xdf sys/kern/kern_descrip.c:1260 closef(3f6c6b5f177a4740,ffff800020b932d8) at closef+0x128 sys/kern/kern_descrip.c:1244 fdfree(c852efb255dd4bdd) at fdfree+0xe8 sys/kern/kern_descrip.c:1176 exit1(0,ffff800020b932d8,7f7ffffd4878) at exit1+0x2d7 sys/kern/kern_exit.c:194 sys_exit(ffffffff8148a603,ffff800020c81280,0) at sys_exit+0x13 sys/kern/kern_exit.c:94 syscall(2c2bf4c9c000f8ba) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(2c2bf4c9c000f8ba) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:583 Xsyscall(0,1,0,1,0,7f7ffffd48d0) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4880, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020c81020 rbx 0 rdx 0xffffffff81f1d064 substchar+0x13e9d rcx 0 rax 0 r8 0xffffffff81154354 setrunnable+0x94 r9 0x5 r10 0xe12dcde831c228c0 r11 0x91771f4d78678464 r12 0xffff800000026d00 r13 0 r14 0xffff800000026d50 r15 0xffffffffffffffff rip 0xffffffff81539865 wsmuxclose+0x75 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020c81000 ss 0x10 wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{0}> show proc PROC (syz-executor1) pid=124269 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b92018,0xffff800020b924d8 process=0xffff800020b949e8 user=0xffff800020c7c000, vmspace=0xfffffd807f00c2d0 estcpu=36, cpticks=24, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31609 385087 29847 0 2 0 syz-executor0 31609 511679 29847 0 7 0x4000000 syz-executor0 22653 204680 1 0 3 0x100083 ttyin getty 59628 158645 0 0 3 0x14200 bored sosplice 25496 349531 8835 0 2 0x482 syz-executor1 29847 55833 8835 0 2 0x482 syz-executor0 8835 30194 8 0 3 0x82 thrsleep syz-fuzzer 8835 427224 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 79537 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 277748 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 197756 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 147044 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 126445 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 192320 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 62247 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 57464 8 0 3 0x4000082 thrsleep syz-fuzzer 8835 328914 8 0 3 0x4000082 kqread syz-fuzzer 8 262493 29760 0 3 0x10008a pause ksh 29760 208373 35590 0 3 0x92 select sshd 35590 47382 1 0 3 0x80 select sshd 85472 483094 62026 73 2 0x100090 syslogd 62026 87753 1 0 3 0x100082 netio syslogd 87056 252283 1 77 3 0x100090 poll dhclient 38122 58126 1 0 3 0x80 poll dhclient 66671 517948 0 0 3 0x14200 pgzero zerothread 36414 358830 0 0 3 0x14200 aiodoned aiodoned 21070 211933 0 0 3 0x14200 syncer update 62437 156259 0 0 3 0x14200 cleaner cleaner 40800 49202 0 0 3 0x14200 reaper reaper 84696 440802 0 0 3 0x14200 pgdaemon pagedaemon 80612 495721 0 0 3 0x14200 bored crynlk 27292 33336 0 0 3 0x14200 bored crypto 51698 447207 0 0 3 0x40014200 acpi0 acpi0 25819 33602 0 0 3 0x40014200 idle1 27119 457428 0 0 3 0x14200 bored softnet 55578 512892 0 0 3 0x14200 bored systqmp 47174 107327 0 0 3 0x14200 bored systq 99767 170340 0 0 3 0x40014200 bored softclock 69720 358381 0 0 3 0x40014200 idle0 1 50073 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 9503 6358K 6358K 78643K 10815 0 0 pcb 23 9K 10K 78643K 524 0 0 rtable 100 3K 4K 78643K 312 0 0 ifaddr 50 12K 13K 78643K 133 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 30 0 0 iov 0 0K 16K 78643K 89 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1200 75K 76K 78643K 1702 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 13 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 1K 1K 78643K 96 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 6 17K 25K 78643K 1079 0 0 sigio 0 0K 0K 78643K 20 0 0 proc 42 38K 70K 78643K 370 0 0 subproc 64 65538K 67586K 78643K 74 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 103 0 0 in_multi 33 2K 2K 78643K 66 0 0 ether_multi 1 0K 0K 78643K 7 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 96 424K 424K 78643K 96 0 0 exec 0 0K 1K 78643K 212 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 90 21K 29K 78643K 3959 0 0 UVM aobj 44 2K 2K 78643K 49 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 19 0 0 NDP 9 0K 0K 78643K 36 0 0 temp 150 2370K 2432K 78643K 5460 0 0 kqueue 0 0K 0K 78643K 8 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 280 396 0 389 1 0 1 1 0 8 0 plimitpl 152 23 0 16 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 544 139 0 135 1 0 1 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 17 0 17 4 4 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 2 1 0 1 1 0 8 0 semapl 112 94 0 84 1 0 1 1 0 8 0 shmpl 112 47 0 5 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3505 0 2114 45 0 45 45 0 8 0 ffsino 272 3505 0 2114 93 0 93 93 0 8 0 nchpl 144 5370 0 3795 59 0 59 59 0 8 0 uvmvnodes 72 3620 0 0 66 0 66 66 0 8 0 vnodes 200 3620 0 0 191 0 191 191 0 8 0 namei 1024 13956 0 13956 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 5 0 5 3 3 0 1 0 8 0 scxspl 192 15695 0 15695 11 10 1 6 0 8 1 sigapl 432 1248 0 1234 2 0 2 2 0 8 0 futexpl 56 11364 0 11364 1 0 1 1 0 8 1 knotepl 112 225 0 198 3 2 1 2 0 8 0 kqueuepl 104 235 0 231 1 0 1 1 0 8 0 pipepl 112 554 0 535 2 1 1 2 0 8 0 fdescpl 488 1249 0 1234 3 1 2 3 0 8 0 filepl 152 6575 0 6477 7 2 5 7 0 8 1 lockfpl 96 213 0 213 2 1 1 1 0 8 1 lockfspl 24 399 0 399 2 1 1 1 0 8 1 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 25 0 15 1 0 1 1 0 8 0 ucredpl 96 1620 0 1613 1 0 1 1 0 8 0 zombiepl 144 1235 0 1234 1 0 1 1 0 8 0 processpl 840 1264 0 1234 4 0 4 4 0 8 0 procpl 600 3344 0 3303 4 0 4 4 0 8 0 sosppl 128 23 0 23 5 4 1 1 0 8 1 sockpl 384 896 0 879 3 0 3 3 0 8 1 mcl64k 65536 515 0 0 65 7 58 65 0 8 1 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 102 0 0 12 0 12 12 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 601 0 0 37 0 37 37 0 8 0 bufpl 256 6970 0 979 375 0 375 375 0 8 0 anonpl 16 132877 0 124957 72 26 46 47 0 125 13 amapchunkpl 152 6621 0 6531 19 14 5 9 0 158 0 amappl16 192 7083 0 6661 58 27 31 32 0 8 9 amappl15 184 3 0 1 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 19 0 18 1 0 1 1 0 8 0 amappl11 152 188 0 179 1 0 1 1 0 8 0 amappl10 144 1186 0 1180 1 0 1 1 0 8 0 amappl9 136 342 0 341 1 0 1 1 0 8 0 amappl8 128 154 0 130 1 0 1 1 0 8 0 amappl7 120 35 0 29 1 0 1 1 0 8 0 amappl6 112 46 0 38 1 0 1 1 0 8 0 amappl5 104 130 0 119 1 0 1 1 0 8 0 amappl4 96 806 0 779 2 1 1 2 0 8 0 amappl3 88 424 0 418 1 0 1 1 0 8 0 amappl2 80 11288 0 11225 2 0 2 2 0 8 0 amappl1 72 33515 0 33079 24 14 10 19 0 8 0 amappl 72 3565 0 3529 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 48 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1249 0 1234 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1249 0 1234 1 0 1 1 0 8 0 vmmpekpl 168 13077 0 13056 2 0 2 2 0 8 0 vmmpepl 168 139280 0 137810 99 28 71 74 0 357 7 vmsppl 360 1248 0 1234 2 0 2 2 0 8 0 pdppl 4096 2505 0 2468 6 1 5 6 0 8 0 pvpl 32 388473 0 376963 168 47 121 130 0 265 28 pmappl 224 1248 0 1234 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 614 0 10 18 0 18 18 0 8 0