uvm_fault(0xfffffd80689d2208, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff83142868 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c0576f0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff83142868 Starting stack trace... panic(ffffffff833a4b66) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c057640) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001544000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff800038c2b250) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800038c2b250) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c0577f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f832be8,81,fffffd80097fb618,ffff800038c2b250) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80601364b0,ffff800038c2b250) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80601364b0,ffff800038c2b250) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80601364b0,ffff800038c2b250) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80601364b0,ffff800038c2b250) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800038c2b250) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800038c2b250,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800038c2b250,ffff80003c057b60,ffff80003c057ab0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c057b60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c057b60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713d298e1160, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *283227 52277 0 0 0 1 syz-executor 445812 50225 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x78f74352f260, count: 14 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd80689d2208, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x78f74352f260, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800037021a40 rbx 0 rdx 0 rcx 0xffff800032c08a80 rax 0x2a r8 0xffff800037021970 r9 0x1 r10 0x5ba17a38a04b4123 r11 0xa5565ba75771b2f8 r12 0 r13 0xffffffff82894328 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff81b444c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000370219c0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=283227 pid=52277 tcnt=3 stat=onproc flags process=0 proc=0 runpri=82, usrpri=82, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800038c2a558,0xffff800032c09cb8 process=0xffff800037027aa0 user=0xffff80003701c000, vmspace=0xfffffd80689d2d78 estcpu=32, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71646 367804 75983 0 2 0 syz-executor *52277 283227 58819 0 7 0 syz-executor 52277 25187 58819 0 2 0x4000000 syz-executor 52277 31185 58819 0 3 0x4000080 fsleep syz-executor 7004 506877 72145 60929 2 0x10 syz-executor 7004 394542 72145 60929 3 0x4000090 fsleep syz-executor 7004 171209 72145 60929 3 0x4000090 fsleep syz-executor 7004 160812 72145 60929 3 0x4000090 fsleep syz-executor 56689 9637 4526 0 2 0 syz-executor 56689 415293 4526 0 3 0x4000080 fsleep syz-executor 56376 360453 3335 0 2 0 syz-executor 56376 194453 3335 0 2 0x4000000 syz-executor 18488 159914 94131 0 2 0 syz-executor 18488 322852 94131 0 3 0x4000080 fsleep syz-executor 18488 25862 94131 0 3 0x4000080 fsleep syz-executor 98120 159936 6692 60929 2 0x10 syz-executor 98120 246833 6692 60929 3 0x4000090 fsleep syz-executor 98120 146094 6692 60929 3 0x4000090 fsleep syz-executor 80042 497628 1 0 3 0x80 nanoslp init 5752 298078 0 0 3 0x14200 bored sosplice 6692 440358 52311 0 3 0x82 nanoslp syz-executor 4526 494627 52311 0 3 0x82 nanoslp syz-executor 72145 197351 52311 0 3 0x82 nanoslp syz-executor 58819 303581 52311 0 3 0x82 nanoslp syz-executor 75983 217490 52311 0 3 0x82 nanoslp syz-executor 94131 133116 52311 0 3 0x82 nanoslp syz-executor 3335 337064 52311 0 3 0x82 nanoslp syz-executor 60813 200961 52311 0 3 0x82 nanoslp syz-executor 52311 200927 93869 0 3 0x82 kqread syz-executor 93869 402377 93258 0 3 0x10008a sigsusp ksh 93258 317963 50634 0 3 0x98 kqread sshd-session 50634 131263 13327 0 3 0x92 kqread sshd-session 13327 333556 1 0 3 0x88 kqread sshd 18300 370740 26142 74 3 0x1100092 bpf pflogd 26142 110986 1 0 3 0x80 sbwait pflogd 98405 131717 60754 73 3 0x1100090 kqread syslogd 60754 177645 1 0 3 0x100082 sbwait syslogd 37861 306201 1 0 3 0x100080 kqread resolvd 86399 29024 88038 77 3 0x100092 kqread dhcpleased 82188 56066 88038 77 3 0x100092 kqread dhcpleased 88038 347933 1 0 3 0x80 kqread dhcpleased 7808 147275 0 0 3 0x14200 bored smr 23357 90685 0 0 2 0x14200 zerothread 34755 427187 0 0 3 0x14200 aiodoned aiodoned 72867 160981 0 0 3 0x14200 syncer update 70853 103502 0 0 3 0x14200 cleaner cleaner 50225 445812 0 0 7 0x14200 reaper 64385 481270 0 0 3 0x14200 pgdaemon pagedaemon 33968 105497 0 0 3 0x14200 bored viomb 76691 286975 0 0 3 0x40014200 acpi0 acpi0 11883 508607 0 0 3 0x40014200 idle1 91350 12326 0 0 3 0x14200 bored softnet7 42299 390752 0 0 3 0x14200 bored softnet6 45838 55792 0 0 3 0x14200 bored softnet5 60707 185152 0 0 3 0x14200 bored softnet4 97651 150309 0 0 3 0x14200 bored softnet3 78444 329952 0 0 3 0x14200 bored softnet2 30428 62666 0 0 3 0x14200 bored softnet1 20700 278004 0 0 3 0x14200 bored softnet0 84624 317451 0 0 3 0x14200 smrbar systqmp 13112 512725 0 0 3 0x14200 bored systq 47513 402668 0 0 3 0x14200 tmoslp softclockmp 13199 61829 0 0 3 0x40014200 tmoslp softclock 94297 494356 0 0 3 0x40014200 idle0 1 493756 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff8391f938) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_pmr_freepageq+0x15c sys/uvm/uvm_pmemrange.c:1371 #4 km_free+0x36b sys/uvm/uvm_km.c:827 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 Process 84624 (systqmp) thread 0xffff8000ffffe7c8 (317451) shared rwlock systqmp r = 0 (0xffffffff83777278) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 11183K 11832K 166960K 12004 0 pcb 17 14K 16K 166960K 192 0 rtable 226 9K 9K 166960K 327 0 pf 36 18K 24K 166960K 94 0 ifaddr 43 7K 8K 166960K 60 0 ifgroup 55 2K 2K 166960K 86 0 sysctl 4 1K 9K 166960K 10 0 counters 68 36K 37K 166960K 100 0 ioctlops 0 0K 4K 166960K 1580 0 iov 0 0K 16K 166960K 18 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1401 88K 88K 166960K 1770 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 13 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 85K 166960K 515 0 sigio 0 0K 0K 166960K 7 0 proc 64 115K 180K 166960K 585 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 78 0 in_multi 99 7K 7K 166960K 119 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 395 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 245 164K 176K 166960K 6501 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 42 84K 99K 166960K 1598 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 27 0 NDP 12 0K 1K 166960K 38 0 temp 57 8647K 8714K 166960K 20380 0 kqueue 14 22K 28K 166960K 104 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 92 0 89 2 1 1 2 0 8 0 rtentry 176 106 0 10 5 0 5 5 0 8 0 unpcb 144 274 0 190 5 1 4 4 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 176 0 172 4 0 4 4 0 8 3 arp 128 12 0 2 1 0 1 1 0 8 0 inpcb 328 604 0 596 7 2 5 7 0 8 4 nd6 144 17 0 0 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 12 0 12 2 1 1 1 0 8 1 pppxif 1504 3 0 3 1 1 0 1 0 8 0 pffrag 232 6 0 3 1 0 1 1 0 482 0 pffrnode 88 6 0 3 1 0 1 1 0 8 0 pffrent 40 9 0 6 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 3 0 2 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 37 0 8 1 0 1 1 0 8 0 pfstkey 128 37 0 8 2 0 2 2 0 8 0 pfstate 384 36 0 8 4 0 4 4 0 8 0 pfrule 1344 60 0 54 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 461 0 15 28 0 28 28 0 8 0 art_table 40 464 0 15 5 0 5 5 0 8 0 art_node 32 106 0 18 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 1 0 1 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2275 0 772 95 0 95 95 0 8 0 ffsino 296 2275 0 772 117 0 117 117 0 8 0 nchpl 144 3013 0 1322 63 0 63 63 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 uvmvnodes 80 2631 0 0 54 0 54 54 0 8 0 vnodes 216 2631 0 0 147 0 147 147 0 8 0 namei 1024 9372 0 9372 2 1 1 2 0 8 1 percpumem 16 65 0 16 1 0 1 1 0 8 0 kstatmem 264 46 0 20 3 1 2 3 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 18030 0 18030 10 5 5 8 1 8 5 plimitpl 152 77 0 60 1 0 1 1 0 8 0 sigapl 424 821 0 766 7 0 7 7 0 8 0 knotepl 120 558 0 0 17 0 17 17 0 8 0 kqueuepl 224 209 0 199 3 2 1 3 0 8 0 pipepl 344 146 0 119 3 0 3 3 0 8 0 fdescpl 528 797 0 765 3 0 3 3 0 8 0 filepl 160 4130 0 3845 14 2 12 14 0 8 0 lockfpl 104 163 0 160 1 0 1 1 0 8 0 lockfspl 48 71 0 68 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 40 0 24 1 0 1 1 0 8 0 ucredpl 104 525 0 510 1 0 1 1 0 8 0 zombiepl 144 767 0 766 1 0 1 1 0 8 0 processpl 1248 821 0 766 5 0 5 5 0 8 0 procpl 664 1515 0 1449 7 0 7 7 0 8 1 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 752 986 0 891 13 3 10 11 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 132 0 0 17 0 17 17 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 166 0 0 10 0 10 10 0 8 0 bufpl 280 7696 0 1553 439 0 439 439 0 8 0 anonpl 32 11514 0 0 93 0 93 93 0 246 0 amapchunkpl 152 20511 0 19870 29 4 25 28 0 158 0 amappl16 200 3997 0 3965 29 15 14 28 0 8 6 amappl15 192 8 0 8 2 1 1 1 0 8 1 amappl14 184 112 0 101 1 0 1 1 0 8 0 amappl13 176 1 0 1 1 1 0 1 0 8 0 amappl12 168 1440 0 1410 2 0 2 2 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 23 0 23 2 2 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 109 0 98 1 0 1 1 0 8 0 amappl6 120 174 0 171 1 0 1 1 0 8 0 amappl5 112 133 0 123 1 0 1 1 0 8 0 amappl4 104 296 0 276 1 0 1 1 0 8 0 amappl3 96 3879 0 3766 4 0 4 4 0 8 0 amappl2 88 631 0 571 2 0 2 2 0 8 0 amappl1 80 9765 0 9179 15 2 13 15 0 8 0 amappl 88 5756 0 5580 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 797 0 765 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 797 0 765 1 0 1 1 0 8 0 vmmpekpl 168 7986 0 7952 3 0 3 3 0 8 0 vmmpepl 168 57180 0 55186 109 2 107 109 0 357 14 vmsppl 488 796 0 765 5 1 4 5 0 8 0 rwobjpl 80 21197 0 17646 76 0 76 76 0 8 0 pdppl 4096 1602 0 1530 98 26 72 82 0 8 0 pvpl 32 19222 0 0 156 0 156 156 0 265 0 pmappl 256 796 0 765 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 276 0 31 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8381aff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 msleep_nsec(ffffffff83810418,ffffffff838103e0,4,ffffffff833876dc,ffffffffffffffff) at msleep_nsec+0xdc sys/kern/kern_synch.c:191 reaper(ffff8000ffffc008) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8381aff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 msleep_nsec(ffffffff83810418,ffffffff838103e0,4,ffffffff833876dc,ffffffffffffffff) at msleep_nsec+0xdc sys/kern/kern_synch.c:191 reaper(ffff8000ffffc008) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x78f74352f260, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x78f74352f260, count: -1