uvm_fault(0xfffffd807f00db40, 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(0xfffffd807f00db40, 0x8f, 0, 1) -> e wsmuxclose(8a24feeab95d359e,ffffffff81617730,ffff800020c8b780,fffffd807eb2c908) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(8a24feeab95d359e,ffffffff81617730,ffff800020c8b780,fffffd807eb2c908) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 end trace frame: 0xffff800020c8b770, count: 0 ddb{0}> trace wsmuxclose(8a24feeab95d359e,ffffffff81617730,ffff800020c8b780,fffffd807eb2c908) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(8a24feeab95d359e,ffffffff81617730,ffff800020c8b780,fffffd807eb2c908) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 spec_close(c58218675e925b7c) at spec_close+0x39a sys/kern/spec_vnops.c:553 VOP_CLOSE(cf9449688adf1254,fffffd807eb2c908,ffff800020b924c8,fffffd807f7c79c0) at VOP_CLOSE+0x6c sys/kern/vfs_vops.c:174 vn_closefile(12a1fe9679d44691,ffff800020b924c8) at vn_closefile+0x150 vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(12a1fe9679d44691,ffff800020b924c8) at vn_closefile+0x150 sys/kern/vfs_vnops.c:575 fdrop(ce329f90f1889c16,fffffd806953db60) at fdrop+0xdf sys/kern/kern_descrip.c:1260 closef(924ba99a986a5ec8,ffff800020b924c8) at closef+0x128 sys/kern/kern_descrip.c:1244 fdfree(d6502bbbb9ed3ec6) at fdfree+0xe8 sys/kern/kern_descrip.c:1176 exit1(0,ffff800020b924c8,7f7ffffbef78) at exit1+0x2d7 sys/kern/kern_exit.c:194 sys_exit(ffffffff81961703,ffff800020c8b980,0) at sys_exit+0x13 sys/kern/kern_exit.c:94 syscall(a1c2239339daf603) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(a1c2239339daf603) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:574 Xsyscall(0,1,0,1,0,7f7ffffbefb4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbef80, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020c8b720 rbx 0 rdx 0xffffffff81f1fbe5 substchar+0x1540d rcx 0 rax 0 r8 0xffffffff816da4a4 setrunnable+0x94 r9 0x5 r10 0x367e7979a8fd2475 r11 0xc86a577bc006e702 r12 0xffff800000026d00 r13 0 r14 0xffff800000026d50 r15 0xffffffffffffffff rip 0xffffffff816177a5 wsmuxclose+0x75 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020c8b700 ss 0x10 wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{0}> show proc PROC (syz-executor1) pid=289863 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020b93530,0xffff800020b92280 process=0xffff800020b95a50 user=0xffff800020c86000, vmspace=0xfffffd807f00db40 estcpu=27, cpticks=3, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 443 167245 28247 0 2 0 syz-executor0 443 250062 28247 0 7 0x4000000 syz-executor0 28247 454970 14147 0 3 0x82 nanosleep syz-executor0 91600 95034 0 0 3 0x14200 bored sosplice 86352 179544 14147 0 3 0x82 nanosleep syz-executor1 14147 216574 89263 0 3 0x82 thrsleep syz-fuzzer 14147 285133 89263 0 3 0x4000082 thrsleep syz-fuzzer 14147 97264 89263 0 3 0x4000082 thrsleep syz-fuzzer 14147 497992 89263 0 3 0x4000082 thrsleep syz-fuzzer 14147 337425 89263 0 3 0x4000082 thrsleep syz-fuzzer 14147 193859 89263 0 3 0x4000082 kqread syz-fuzzer 14147 174895 89263 0 3 0x4000082 thrsleep syz-fuzzer 14147 61759 89263 0 3 0x4000082 thrsleep syz-fuzzer 14147 294977 89263 0 3 0x4000082 thrsleep syz-fuzzer 14147 190360 89263 0 3 0x4000082 thrsleep syz-fuzzer 89263 8002 50692 0 3 0x10008a pause ksh 50692 265616 81941 0 3 0x92 select sshd 78292 164764 1 0 3 0x100083 ttyin getty 81941 378166 1 0 3 0x80 select sshd 9832 34729 53675 73 2 0x100090 syslogd 53675 498068 1 0 3 0x100082 netio syslogd 32422 250716 1 77 3 0x100090 poll dhclient 12987 268392 1 0 3 0x80 poll dhclient 36701 189779 0 0 2 0x14200 zerothread 25072 223626 0 0 3 0x14200 aiodoned aiodoned 76888 51359 0 0 3 0x14200 syncer update 28195 457421 0 0 3 0x14200 cleaner cleaner 21931 65728 0 0 3 0x14200 reaper reaper 51596 470729 0 0 3 0x14200 pgdaemon pagedaemon 10850 476751 0 0 3 0x14200 bored crynlk 29732 272721 0 0 3 0x14200 bored crypto 51025 187778 0 0 3 0x40014200 acpi0 acpi0 90936 93858 0 0 3 0x40014200 idle1 8134 375479 0 0 3 0x14200 bored softnet 26947 326442 0 0 3 0x14200 bored systqmp 30882 466371 0 0 3 0x14200 bored systq 44997 363941 0 0 3 0x40014200 bored softclock 36141 309588 0 0 3 0x40014200 idle0 1 507098 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 9491 6354K 6354K 78643K 10713 0 0 pcb 23 9K 10K 78643K 190 0 0 rtable 100 3K 4K 78643K 274 0 0 ifaddr 46 11K 12K 78643K 93 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 19 0 0 iov 0 0K 16K 78643K 43 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1217 76K 77K 78643K 1438 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 44 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 6 17K 25K 78643K 314 0 0 sigio 0 0K 0K 78643K 11 0 0 proc 41 38K 70K 78643K 304 0 0 subproc 64 65538K 67586K 78643K 118 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 20 0 0 in_multi 33 2K 2K 78643K 54 0 0 ether_multi 1 0K 0K 78643K 4 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 187 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 93 21K 29K 78643K 1773 0 0 UVM aobj 20 2K 2K 78643K 20 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 8 0K 0K 78643K 26 0 0 temp 116 2356K 2420K 78643K 3654 0 0 kqueue 0 0K 0K 78643K 7 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 5 0 1 1 0 1 1 0 8 0 inpcbpl 280 141 0 134 1 0 1 1 0 8 0 plimitpl 152 18 0 11 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 50 0 10 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 50 0 46 1 0 1 1 0 8 0 nd6 48 6 0 2 1 0 1 1 0 8 0 ppxss 1128 6 0 6 3 3 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 224 0 41 12 0 12 12 0 8 0 art_table 32 225 0 41 2 0 2 2 0 8 0 art_node 16 49 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semapl 112 42 0 32 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1994 0 610 45 0 45 45 0 8 0 ffsino 272 1994 0 610 93 0 93 93 0 8 0 nchpl 144 2631 0 1058 59 0 59 59 0 8 0 uvmvnodes 72 2096 0 0 39 0 39 39 0 8 0 vnodes 200 2096 0 0 111 0 111 111 0 8 0 namei 1024 6796 0 6796 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 6304 0 6304 7 6 1 6 0 8 1 sigapl 432 478 0 464 2 0 2 2 0 8 0 futexpl 56 3649 0 3649 1 0 1 1 0 8 1 knotepl 112 155 0 128 3 2 1 2 0 8 0 kqueuepl 104 104 0 102 1 0 1 1 0 8 0 pipepl 112 330 0 311 2 1 1 1 0 8 0 fdescpl 488 479 0 464 3 1 2 3 0 8 0 filepl 152 2886 0 2790 6 1 5 5 0 8 1 lockfpl 104 127 0 127 2 1 1 1 0 8 1 lockfspl 32 192 0 192 2 1 1 1 0 8 1 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 660 0 653 1 0 1 1 0 8 0 zombiepl 144 465 0 464 2 1 1 1 0 8 0 processpl 840 494 0 464 4 0 4 4 0 8 0 procpl 600 1159 0 1119 4 0 4 4 0 8 0 srpgc 64 6 0 6 1 1 0 1 0 8 0 sosppl 128 10 0 10 1 1 0 1 0 8 0 sockpl 384 305 0 288 3 0 3 3 0 8 1 mcl64k 65536 511 0 0 64 1 63 64 0 8 1 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 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 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 106 0 0 13 0 13 13 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 577 0 0 36 0 36 36 0 8 0 bufpl 256 5468 0 965 282 0 282 282 0 8 0 anonpl 16 60936 0 53365 64 17 47 47 0 125 16 amapchunkpl 152 2750 0 2634 10 5 5 10 0 158 0 amappl16 192 2406 0 2027 42 15 27 31 0 8 8 amappl15 184 5 0 3 1 0 1 1 0 8 0 amappl14 176 6 0 4 2 1 1 1 0 8 0 amappl13 168 20 0 17 1 0 1 1 0 8 0 amappl12 160 193 0 191 1 0 1 1 0 8 0 amappl11 152 192 0 183 1 0 1 1 0 8 0 amappl10 144 63 0 61 2 1 1 1 0 8 0 amappl9 136 345 0 344 1 0 1 1 0 8 0 amappl8 128 341 0 314 1 0 1 1 0 8 0 amappl7 120 35 0 29 1 0 1 1 0 8 0 amappl6 112 52 0 44 1 0 1 1 0 8 0 amappl5 104 110 0 99 1 0 1 1 0 8 0 amappl4 96 389 0 364 2 1 1 2 0 8 0 amappl3 88 143 0 137 1 0 1 1 0 8 0 amappl2 80 3450 0 3390 2 0 2 2 0 8 0 amappl1 72 18580 0 18143 26 17 9 19 0 8 0 amappl 72 1387 0 1344 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 479 0 464 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 479 0 464 1 0 1 1 0 8 0 vmmpekpl 168 7757 0 7737 2 0 2 2 0 8 0 vmmpepl 168 56947 0 55528 92 24 68 71 0 357 6 vmsppl 360 478 0 464 2 0 2 2 0 8 0 pdppl 4096 965 0 928 6 1 5 6 0 8 0 pvpl 32 184980 0 174379 152 31 121 121 0 265 35 pmappl 224 478 0 464 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 517 0 4 15 0 15 15 0 8 0