login: uvm_fault(0xfffffd807efffca8, 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(0xfffffd807efffca8, 0x9f, 0, 2) -> e wsmux_detach_sc(ffff80000064dc00) at wsmux_detach_sc+204 end trace frame: 0xffff800020beee80, count: 0 ddb{1}> trace wsmux_detach_sc(ffff80000064dc00) at wsmux_detach_sc+204 wsmouseopen(4400,1,2000,ffff800020b43788) at wsmouseopen+233 spec_open(ffff800020beef00) at spec_open+535 VOP_OPEN(fffffd8064e8f9a0,1,fffffd807f7c7a20,ffff800020b43788) at VOP_OPEN+118 vn_open(ffff800020bef0f0,1,0) at vn_open+1222 doopenat(ffff800020b43788,ffffff9c,2054a000,0,0,ffff800020bef330) at doopenat+702 syscall(ffff800020bef3e0) at syscall+1452 Xsyscall(6,0,ffffffffffffffa8,0,3,1238e92b010) at Xsyscall+296 end of kernel end trace frame: 0x12592ae14d0, count: -8 ddb{1}> show registers rdi 18446744071582302825 spllower+121 rsi 2062 rbp 18446603336770580000 rbx 0 rdx 2063 rcx 18446744073709551615 rax 159 r8 18446744071585836581 setrunnable+149 r9 5 r10 4 r11 6372567303527020065 r12 18446603336221355448 r13 5984 __ALIGN_SIZE+1888 r14 18446603336227806208 r15 1 rip 18446744071593530508 wsmux_detach_sc+204 cs 8 rflags 66182 __ALIGN_SIZE+62086 rsp 18446603336770579952 ss 16 wsmux_detach_sc+204: movq %rcx,0(%rax) ddb{1}> show proc PROC (syz-executor.0) pid=474881 stat=onproc flags process=0 proc=4000000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b42978,0xffff800020b42730 process=0xffff800020b453c0 user=0xffff800020bea000, vmspace=0xfffffd807efffca8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88554 416632 95671 0 2 0 syz-executor.0 *88554 474881 95671 0 7 0x4000000 syz-executor.0 88554 87801 95671 0 2 0x4000000 syz-executor.0 46194 208244 1 0 3 0x100083 ttyin getty 3502 473229 0 0 3 0x14200 bored sosplice 95671 185008 87788 0 3 0x82 nanosleep syz-executor.0 6319 25637 87788 0 7 0x2 syz-executor.1 87788 370587 65197 0 3 0x82 kqread syz-fuzzer 87788 395236 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 126673 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 234676 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 12307 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 484346 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 499555 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 114293 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 119311 65197 0 3 0x4000082 thrsleep syz-fuzzer 87788 514622 65197 0 3 0x4000082 thrsleep syz-fuzzer 65197 316443 30107 0 3 0x10008a pause ksh 30107 78328 92420 0 3 0x92 select sshd 92420 4148 1 0 3 0x80 select sshd 65808 262404 92814 73 2 0x100090 syslogd 92814 288142 1 0 3 0x100082 netio syslogd 480 398193 1 77 3 0x100090 poll dhclient 45563 162210 1 0 3 0x80 poll dhclient 37806 452306 0 0 3 0x14200 pgzero zerothread 73432 287275 0 0 3 0x14200 aiodoned aiodoned 53693 28929 0 0 3 0x14200 syncer update 86566 495837 0 0 3 0x14200 cleaner cleaner 74571 300187 0 0 3 0x14200 reaper reaper 16421 41460 0 0 3 0x14200 pgdaemon pagedaemon 90258 221780 0 0 3 0x14200 bored crynlk 54883 158330 0 0 3 0x14200 bored crypto 6543 24447 0 0 3 0x40014200 acpi0 acpi0 4870 319711 0 0 3 0x40014200 idle1 32380 274008 0 0 3 0x14200 bored softnet 82561 430478 0 0 3 0x14200 bored systqmp 43770 296994 0 0 3 0x14200 bored systq 53807 267241 0 0 3 0x40014200 bored softclock 69809 161674 0 0 3 0x40014200 idle0 1 383119 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 88554 (syz-executor.0) thread 0xffff800020b43788 (474881) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823220c8) 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 6319 (syz-executor.1) thread 0xffff800020b24710 (25637) exclusive rrwlock inode r = 0 (0xfffffd806fdffc50) 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 (0xfffffd806a1e8a28) 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 9499 6357K 6357K 78643K 10720 0 0 pcb 23 9K 10K 78643K 326 0 0 rtable 100 3K 4K 78643K 234 0 0 ifaddr 48 11K 11K 78643K 68 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 18 0 0 iov 0 0K 16K 78643K 42 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1200 75K 75K 78643K 1531 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 12 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 68 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 5 13K 25K 78643K 492 0 0 sigio 0 0K 0K 78643K 11 0 0 proc 43 38K 58K 78643K 337 0 0 subproc 64 65538K 67586K 78643K 104 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 64 0 0 in_multi 33 2K 2K 78643K 63 0 0 ether_multi 1 0K 0K 78643K 3 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 196 0 0 pfkey data 0 0K 0K 78643K 2 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 79 20K 29K 78643K 2356 0 0 UVM aobj 43 3K 3K 78643K 43 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 16 0 0 NDP 9 0K 0K 78643K 20 0 0 temp 133 2362K 2428K 78643K 4101 0 0 kqueue 0 0K 0K 78643K 2 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 5 0 1 1 0 1 1 0 8 0 inpcbpl 280 275 0 268 1 0 1 1 0 8 0 plimitpl 152 21 0 14 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 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 544 95 0 91 1 0 1 1 0 8 0 nd6 48 6 0 2 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 226 0 41 12 0 12 12 0 8 0 art_table 32 227 0 41 2 0 2 2 0 8 0 art_node 16 49 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 2 1 0 1 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 41 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2323 0 920 46 0 46 46 0 8 0 ffsino 272 2323 0 920 95 0 95 95 0 8 0 nchpl 144 3235 0 1626 61 0 61 61 0 8 0 uvmvnodes 72 2448 0 0 45 0 45 45 0 8 0 vnodes 200 2448 0 0 129 0 129 129 0 8 0 namei 1024 8882 0 8881 1 0 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 8465 0 8465 7 6 1 5 0 8 1 sigapl 432 658 0 645 2 0 2 2 0 8 0 futexpl 56 5118 0 5118 1 0 1 1 0 8 1 knotepl 112 196 0 169 3 2 1 2 0 8 0 kqueuepl 104 142 0 140 1 0 1 1 0 8 0 pipepl 112 394 0 375 2 1 1 1 0 8 0 fdescpl 488 659 0 645 3 1 2 3 0 8 0 filepl 152 3820 0 3723 6 1 5 5 0 8 1 lockfpl 104 175 0 175 2 1 1 1 0 8 1 lockfspl 32 198 0 198 2 1 1 1 0 8 1 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 21 0 11 1 0 1 1 0 8 0 ucredpl 96 927 0 920 1 0 1 1 0 8 0 zombiepl 144 645 0 645 2 1 1 1 0 8 1 processpl 840 674 0 645 4 0 4 4 0 8 0 procpl 600 1755 0 1715 4 0 4 4 0 8 0 srpgc 64 6 0 6 1 1 0 1 0 8 0 sosppl 128 14 0 14 1 0 1 1 0 8 1 sockpl 384 542 0 525 4 1 3 3 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 118 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 136 0 0 8 0 8 8 0 8 0 bufpl 256 5973 0 1017 310 0 310 310 0 8 0 anonpl 16 75658 0 67937 54 21 33 47 0 125 1 amapchunkpl 152 3673 0 3585 13 9 4 9 0 158 0 amappl16 192 3089 0 2686 41 19 22 32 0 8 1 amappl15 184 229 0 227 2 1 1 1 0 8 0 amappl14 176 126 0 123 2 1 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 252 0 250 2 1 1 1 0 8 0 amappl11 152 188 0 178 1 0 1 1 0 8 0 amappl10 144 56 0 54 1 0 1 1 0 8 0 amappl9 136 353 0 350 1 0 1 1 0 8 0 amappl8 128 389 0 367 1 0 1 1 0 8 0 amappl7 120 40 0 34 1 0 1 1 0 8 0 amappl6 112 59 0 49 1 0 1 1 0 8 0 amappl5 104 350 0 337 1 0 1 1 0 8 0 amappl4 96 278 0 256 2 1 1 2 0 8 0 amappl3 88 144 0 139 1 0 1 1 0 8 0 amappl2 80 5305 0 5253 2 0 2 2 0 8 0 amappl1 72 22783 0 22373 24 14 10 19 0 8 0 amappl 72 1974 0 1940 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 42 0 0 1 0 1 1 0 8 0 uaddrrnd 24 659 0 645 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 659 0 645 1 0 1 1 0 8 0 vmmpekpl 168 9246 0 9228 2 0 2 2 0 8 0 vmmpepl 168 77209 0 75873 87 23 64 72 0 357 0 vmsppl 360 658 0 645 2 0 2 2 0 8 0 pdppl 4096 1326 0 1290 6 1 5 6 0 8 0 pvpl 32 229093 0 218396 137 32 105 122 0 265 17 pmappl 224 658 0 645 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 457 0 3 13 0 13 13 0 8 0