uvm_fault(0xfffffd807f00d168, 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(0xfffffd807f00d168, 0x8f, 0, 1) -> e wsmuxclose(c05861782e6f1fe7,ffffffff81617730,ffff800020c7d1c0,fffffd806ed10b00) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(c05861782e6f1fe7,ffffffff81617730,ffff800020c7d1c0,fffffd806ed10b00) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 end trace frame: 0xffff800020c7d1b0, count: 0 ddb{0}> trace wsmuxclose(c05861782e6f1fe7,ffffffff81617730,ffff800020c7d1c0,fffffd806ed10b00) at wsmuxclose+0x75 wsmux_do_close sys/dev/wscons/wsmux.c:307 [inline] wsmuxclose(c05861782e6f1fe7,ffffffff81617730,ffff800020c7d1c0,fffffd806ed10b00) at wsmuxclose+0x75 sys/dev/wscons/wsmux.c:277 spec_close(91a4599c903077fb) at spec_close+0x39a sys/kern/spec_vnops.c:553 VOP_CLOSE(49096de6e6340533,fffffd806ed10b00,ffff800020b75520,fffffd807f7c7ae0) at VOP_CLOSE+0x6c sys/kern/vfs_vops.c:174 vn_closefile(bc7ce87a07d66e12,ffff800020b75520) at vn_closefile+0x150 vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(bc7ce87a07d66e12,ffff800020b75520) at vn_closefile+0x150 sys/kern/vfs_vnops.c:575 fdrop(b08e25edbef72a3e,fffffd806d3961d8) at fdrop+0xdf sys/kern/kern_descrip.c:1260 closef(eb303d1f3876653c,ffff800020b75520) at closef+0x128 sys/kern/kern_descrip.c:1244 fdfree(7e9582b3c367ef44) at fdfree+0xe8 sys/kern/kern_descrip.c:1176 exit1(0,ffff800020b75520,7f7fffff13f8) at exit1+0x2d7 sys/kern/kern_exit.c:194 sys_exit(ffffffff81961703,ffff800020c7d3c0,0) at sys_exit+0x13 sys/kern/kern_exit.c:94 syscall(f8270e65ceab540b) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(f8270e65ceab540b) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,1,0,1,0,7f7fffff1434) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1400, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020c7d160 rbx 0 rdx 0xffffffff81f52d1a cy_pio_rec+0x1f938 rcx 0xffffffff81f58b16 apollo_udma133_tim+0x4cf2 rax 0 r8 0 r9 0 r10 0xffff800020c70f60 r11 0xea97bb690dffb0ae r12 0xffff800000026d00 r13 0 r14 0xffff800000026d50 r15 0xffffffffffffffff rip 0xffffffff816177a5 wsmuxclose+0x75 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020c7d140 ss 0 wsmuxclose+0x75: cmpq %r12,0x90(%r15) ddb{0}> show proc PROC (syz-executor1) pid=146964 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=55, nice=20 forw=0xffffffffffffffff, list=0xffff800020be5c30,0xffff800020bbb9f0 process=0xffff800020b95a50 user=0xffff800020c78000, vmspace=0xfffffd807f00d168 estcpu=5, cpticks=6, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6242 92426 57094 0 2 0 syz-executor0 6242 191043 57094 0 7 0x4000080 syz-executor0 6242 293686 57094 0 3 0x4000080 fsleep syz-executor0 38338 451577 38497 0 3 0x82 nanosleep syz-executor1 57094 66420 38497 0 3 0x82 nanosleep syz-executor0 38497 104941 38357 0 3 0x82 thrsleep syz-execprog 38497 35355 38357 0 3 0x4000082 thrsleep syz-execprog 38497 117319 38357 0 3 0x4000082 thrsleep syz-execprog 38497 271415 38357 0 3 0x4000082 thrsleep syz-execprog 38497 167344 38357 0 3 0x4000082 thrsleep syz-execprog 38497 419323 38357 0 3 0x4000082 thrsleep syz-execprog 38497 147161 38357 0 3 0x4000082 thrsleep syz-execprog 38497 52160 38357 0 3 0x4000082 thrsleep syz-execprog 38497 513635 38357 0 3 0x4000082 kqread syz-execprog 38357 17404 57459 0 3 0x10008a pause ksh 57459 485929 36365 0 3 0x92 select sshd 62664 333117 1 0 3 0x100083 ttyin getty 36365 28284 1 0 3 0x80 select sshd 20375 234032 8773 73 2 0x100090 syslogd 8773 375803 1 0 3 0x100082 netio syslogd 27420 131225 1 77 3 0x100090 poll dhclient 4786 136530 1 0 3 0x80 poll dhclient 43114 477971 0 0 3 0x14200 pgzero zerothread 21780 451080 0 0 3 0x14200 aiodoned aiodoned 84429 36649 0 0 3 0x14200 syncer update 13333 470359 0 0 3 0x14200 cleaner cleaner 89882 151177 0 0 3 0x14200 reaper reaper 17562 78962 0 0 3 0x14200 pgdaemon pagedaemon 60319 254400 0 0 3 0x14200 bored crynlk 37470 298088 0 0 3 0x14200 bored crypto 25045 341150 0 0 3 0x40014200 acpi0 acpi0 44888 193808 0 0 3 0x40014200 idle1 99918 517903 0 0 3 0x14200 bored softnet 5166 178286 0 0 3 0x14200 bored systqmp 50741 188537 0 0 3 0x14200 bored systq 56962 220987 0 0 3 0x40014200 bored softclock 5762 348152 0 0 3 0x40014200 idle0 1 410601 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 9454 6336K 6336K 78643K 10549 0 0 pcb 23 9K 9K 78643K 55 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 15 0 0 mount 1 1K