login: uvm_fault(0xfffffd807f00d000, 0x9f, 0, 2) -> e kernel: page fault trap, code=0 Stopped at wsmux_detach_sc+0xcc: movq %rcx,0(%rax) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807f00d000, 0x9f, 0, 2) -> e wsmux_detach_sc(ffff80000064dc00) at wsmux_detach_sc+204 end trace frame: 0xffff800020c30f80, count: 0 ddb{1}> trace wsmux_detach_sc(ffff80000064dc00) at wsmux_detach_sc+204 wsmouseopen(4400,11,2000,ffff800020b439e0) at wsmouseopen+233 spec_open(ffff800020c31000) at spec_open+535 VOP_OPEN(fffffd807e001a58,11,fffffd807f7c7840,ffff800020b439e0) at VOP_OPEN+118 vn_open(ffff800020c311f0,11,20) at vn_open+1222 doopenat(ffff800020b439e0,ffffff9c,20000100,10,20,ffff800020c31430) at doopenat+702 syscall(ffff800020c314e0) at syscall+1452 Xsyscall(6,0,ffffffffffffffa9,0,3,c86c69bc0d8) at Xsyscall+296 end of kernel end trace frame: 0xc8957b831a0, count: -8 ddb{1}> show registers rdi 18446744071582847145 spllower+121 rsi 1504 rbp 18446603336770850592 rbx 0 rdx 1505 rcx 18446744073709551615 rax 159 r8 18446744071593365349 setrunnable+149 r9 5 r10 4 r11 13621139637116432917 r12 18446603336221355448 r13 5984 __ALIGN_SIZE+1888 r14 18446603336227806208 r15 1 rip 18446744071589157356 wsmux_detach_sc+204 cs 8 rflags 66182 __ALIGN_SIZE+62086 rsp 18446603336770850544 ss 16 wsmux_detach_sc+204: movq %rcx,0(%rax) ddb{1}> show proc PROC (syz-executor.0) pid=144674 stat=onproc flags process=0 proc=4000000 pri=0, usrpri=67, nice=20 forw=0xffffffffffffffff, list=0xffff800020b95c30,0xffffffff8230d660 process=0xffff800020b453c0 user=0xffff800020c2c000, vmspace=0xfffffd807f00d000 estcpu=17, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97925 135707 75870 0 7 0 syz-executor.0 97925 95200 75870 0 2 0x4000000 syz-executor.0 *97925 144674 75870 0 7 0x4000000 syz-executor.0 86854 184472 71205 0 3 0x2 biowait syz-executor.1 75870 330624 71205 0 3 0x82 nanosleep syz-executor.0 71205 85899 50373 0 3 0x82 thrsleep syz-fuzzer 71205 319843 50373 0 3 0x4000082 nanosleep syz-fuzzer 71205 15987 50373 0 3 0x4000082 thrsleep syz-fuzzer 71205 142085 50373 0 3 0x4000082 kqread syz-fuzzer 71205 440490 50373 0 3 0x4000082 thrsleep syz-fuzzer 71205 259180 50373 0 3 0x4000082 thrsleep syz-fuzzer 71205 411528 50373 0 3 0x4000082 thrsleep syz-fuzzer 71205 233845 50373 0 3 0x4000082 thrsleep syz-fuzzer 71205 134182 50373 0 3 0x4000082 thrsleep syz-fuzzer 71205 506098 50373 0 3 0x4000082 thrsleep syz-fuzzer 50373 265366 92925 0 3 0x10008a pause ksh 92925 502943 52034 0 3 0x92 select sshd 6191 166435 1 0 3 0x100083 ttyin getty 52034 235268 1 0 3 0x80 select sshd 32160 215667 91613 73 2 0x100090 syslogd 91613 142178 1 0 3 0x100082 netio syslogd 68366 234157 1 77 3 0x100090 poll dhclient 75664 192996 1 0 3 0x80 poll dhclient 16768 459711 0 0 3 0x14200 pgzero zerothread 6188 266781 0 0 3 0x14200 aiodoned aiodoned 17937 267232 0 0 3 0x14200 syncer update 61015 511347 0 0 3 0x14200 cleaner cleaner 29861 391929 0 0 3 0x14200 reaper reaper 7760 111882 0 0 3 0x14200 pgdaemon pagedaemon 53109 342134 0 0 3 0x14200 bored crynlk 25938 240497 0 0 3 0x14200 bored crypto 70689 252638 0 0 3 0x40014200 acpi0 acpi0 92871 166490 0 0 3 0x40014200 idle1 2009 382233 0 0 3 0x14200 bored softnet 73358 365090 0 0 3 0x14200 bored systqmp 44758 474172 0 0 3 0x14200 bored systq 79659 433680 0 0 3 0x40014200 bored softclock 17603 188316 0 0 3 0x40014200 idle0 1 405856 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 97925 (syz-executor.0) thread 0xffff800020b439e0 (144674) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8230eba0) locked @ /syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/trap.c:161 #0 witness_lock+1418 #1 ___mp_acquire_count+103 #2 mi_switch+944 #3 sleep_finish+272 #4 sleep_finish_all+52 #5 tsleep+444 #6 pckbc_enqueue_cmd+669 #7 pms_change_state+467 #8 pms_disable+57 #9 wsmouse_mux_close+63 #10 wsmux_detach_sc+155 #11 wsmouseopen+233 #12 spec_open+535 #13 VOP_OPEN+118 #14 vn_open+1222 #15 doopenat+702 #16 syscall+1452 #17 Xsyscall+296 Process 86854 (syz-executor.1) thread 0xffff800020b24008 (184472) exclusive rrwlock inode r = 0 (0xfffffd807df63f80) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_ihash.c:140 #0 witness_lock+1418 #1 _rw_enter+1101 #2 _rrw_enter+96 #3 ufs_ihashins+103 #4 ffs_vget+317 #5 ffs_inode_alloc+451 #6 ufs_mkdir+271 #7 VOP_MKDIR+118 #8 domkdirat+301 #9 syscall+1452 #10 Xsyscall+296 exclusive rrwlock inode r = 0 (0xfffffd806a1e9c48) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+1418 #1 _rw_enter+1101 #2 _rrw_enter+96 #3 VOP_LOCK+87 #4 vn_lock+110 #5 vfs_lookup+245 #6 namei+1202 #7 domkdirat+129 #8 syscall+1452 #9 Xsyscall+296 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9458 6336K 6336K 78643K 10548 0 0 pcb 23 9K 9K 78643K 53 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 17 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1199 75K 75K 78643K 1210 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 5 13K 21K 78643K 26 0 0 proc 40 38K 58K 78643K 258 0 0 subproc 64 65538K 67586K 78643K 68 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 36 159K 159K 78643K 36 0 0 exec 0 0K 1K 78643K 163 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 77 20K 20K 78643K 800 0 0 UVM aobj 4 2K 2K 78643K 4 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 81 2352K 2416K 78643K 2795 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 32 0 25 1 0 1 1 0 8 0 plimitpl 152 14 0 7 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 12 0 8 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 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1442 0 33 46 0 46 46 0 8 0 ffsino 272 1442 0 33 95 0 95 95 0 8 0 nchpl 144 1681 0 60 61 0 61 61 0 8 0 uvmvnodes 72 1485 0 0 27 0 27 27 0 8 0 vnodes 200 1485 0 0 79 0 79 79 0 8 0 namei 1024 3974 0 3973 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 3960 0 3959 8 7 1 6 0 8 0 sigapl 432 194 0 181 2 0 2 2 0 8 0 futexpl 56 139 0 139 1 0 1 1 0 8 1 knotepl 112 68 0 41 2 0 2 2 0 8 1 kqueuepl 104 6 0 4 1 0 1 1 0 8 0 pipepl 112 134 0 115 2 1 1 1 0 8 0 fdescpl 488 195 0 181 3 0 3 3 0 8 1 filepl 152 977 0 879 6 1 5 5 0 8 1 lockfpl 104 7 0 6 2 1 1 1 0 8 0 lockfspl 32 4 0 3 2 1 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 66 0 59 1 0 1 1 0 8 0 zombiepl 144 181 0 181 2 1 1 1 0 8 1 processpl 840 209 0 181 4 0 4 4 0 8 0 procpl 600 236 0 197 4 0 4 4 0 8 0 sockpl 384 72 0 55 2 0 2 2 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 115 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 127 0 0 8 0 8 8 0 8 0 bufpl 256 5212 0 1013 263 0 263 263 0 8 0 anonpl 16 25750 0 19030 29 1 28 28 0 125 1 amapchunkpl 152 750 0 654 5 0 5 5 0 158 0 amappl16 192 462 0 128 17 0 17 17 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 4 0 4 2 1 1 1 0 8 1 amappl13 168 30 0 25 1 0 1 1 0 8 0 amappl12 160 7 0 7 1 1 0 1 0 8 0 amappl11 152 185 0 175 1 0 1 1 0 8 0 amappl10 144 54 0 53 2 1 1 1 0 8 0 amappl9 136 354 0 351 1 0 1 1 0 8 0 amappl8 128 137 0 119 1 0 1 1 0 8 0 amappl7 120 38 0 32 1 0 1 1 0 8 0 amappl6 112 56 0 48 1 0 1 1 0 8 0 amappl5 104 123 0 112 1 0 1 1 0 8 0 amappl4 96 271 0 248 1 0 1 1 0 8 0 amappl3 88 130 0 122 1 0 1 1 0 8 0 amappl2 80 711 0 662 2 0 2 2 0 8 1 amappl1 72 12409 0 11991 24 6 18 19 0 8 8 amappl 72 444 0 408 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 195 0 181 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 195 0 181 1 0 1 1 0 8 0 vmmpekpl 168 5363 0 5343 2 0 2 2 0 8 0 vmmpepl 168 27461 0 26192 82 12 70 70 0 357 14 vmsppl 360 194 0 181 2 0 2 2 0 8 0 pdppl 4096 397 0 362 5 0 5 5 0 8 0 pvpl 32 101841 0 92157 100 4 96 96 0 265 17 pmappl 224 194 0 181 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 407 0 3 12 0 12 12 0 8 0