login: uvm_fault(0xfffffd80707eb3e8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81df6168 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a2e5ab0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81df6168 Starting stack trace... panic(ffffffff833a4e21) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a2e5a00) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015a7000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff80003780ba18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003780ba18) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2e5bb0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807dac4d98,81,fffffd80097fb138,ffff80003780ba18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b91d9a0,ffff80003780ba18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b91d9a0,ffff80003780ba18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b91d9a0,ffff80003780ba18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b91d9a0,ffff80003780ba18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003780ba18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003780ba18,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003780ba18,ffff80002a2e5f20,ffff80002a2e5e70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2e5f20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2e5f20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7672e04fad30, 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 *380127 51843 0 0 0 1 syz-executor 484609 15553 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7b1ba414fda0, 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(0xfffffd80707eb3e8, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7b1ba414fda0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003b847e70 rbx 0 rdx 0 rcx 0xffff80003780b780 rax 0x2a r8 0xffff80003b847da0 r9 0x1 r10 0xf8d306baba752be5 r11 0xddeb2b6837cadffd r12 0 r13 0 r14 0 r15 0 rip 0xffffffff811e14c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003b847df0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=380127 pid=51843 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003780ba18,0xffff80003780a568 process=0xffff80003b824500 user=0xffff80003b842000, vmspace=0xfffffd80707ebd70 estcpu=36, cpticks=1, pctcpu=0.0, user=1, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55168 340521 9009 0 2 0 syz-executor 55168 521231 9009 0 3 0x4000080 fsleep syz-executor 55168 83468 9009 0 3 0x4000080 fsleep syz-executor *51843 380127 4407 0 7 0 syz-executor 51843 17801 4407 0 3 0x4000080 fsleep syz-executor 31843 165541 29296 0 2 0 syz-executor 31843 277006 29296 0 3 0x4000080 fsleep syz-executor 26928 173426 42295 0 3 0x80 nanoslp syz-executor 26928 138366 42295 0 3 0x4000080 kqpoll syz-executor 26928 167845 42295 0 3 0x4000080 fsleep syz-executor 90766 493716 1 0 3 0x80 nanoslp init 20652 221112 25669 0 3 0x82 wait syz-executor 42295 264543 25669 0 3 0x82 nanoslp syz-executor 29296 435608 25669 0 3 0x82 nanoslp syz-executor 40783 489318 25669 0 3 0x82 wait syz-executor 81541 266040 0 0 3 0x14200 bored sosplice 92695 95617 25669 0 3 0x82 nanoslp syz-executor 79045 315487 25669 0 3 0x82 piperd syz-executor 4407 383278 25669 0 3 0x82 nanoslp syz-executor 9009 385623 25669 0 3 0x82 nanoslp syz-executor 25669 49678 40977 0 2 0x2 syz-executor 40977 32808 66148 0 3 0x10008a sigsusp ksh 66148 94916 93292 0 3 0x98 kqread sshd-session 93292 505809 31167 0 3 0x92 kqread sshd-session 31167 95918 1 0 3 0x88 kqread sshd 73328 215004 80207 74 3 0x1100092 bpf pflogd 80207 276960 1 0 3 0x80 sbwait pflogd 2903 413173 75444 73 3 0x1100090 kqread syslogd 75444 268002 1 0 3 0x100082 sbwait syslogd 80977 32256 1 0 3 0x100080 kqread resolvd 91584 262156 97198 77 3 0x100092 kqread dhcpleased 23321 521662 97198 77 3 0x100092 kqread dhcpleased 97198 512431 1 0 3 0x80 kqread dhcpleased 37067 34250 0 0 3 0x14200 bored smr 90354 315210 0 0 3 0x14200 pgzero zerothread 29366 137239 0 0 3 0x14200 aiodoned aiodoned 53879 362542 0 0 3 0x14200 syncer update 40215 518570 0 0 3 0x14200 cleaner cleaner 15553 484609 0 0 7 0x14200 reaper 29217 291014 0 0 3 0x14200 pgdaemon pagedaemon 49163 19636 0 0 3 0x14200 bored viomb 58625 290943 0 0 3 0x40014200 acpi0 acpi0 37057 389049 0 0 3 0x40014200 idle1 87829 29697 0 0 3 0x14200 bored softnet7 49196 121606 0 0 3 0x14200 bored softnet6 22745 371023 0 0 3 0x14200 bored softnet5 73380 141630 0 0 3 0x14200 bored softnet4 41020 201004 0 0 3 0x14200 bored softnet3 51036 263132 0 0 3 0x14200 bored softnet2 45150 294957 0 0 3 0x14200 bored softnet1 55544 521226 0 0 3 0x14200 netlock softnet0 19673 113067 0 0 2 0x40014200 systqmp 24587 229364 0 0 3 0x14200 bored systq 57243 20301 0 0 3 0x14200 tmoslp softclockmp 48190 32140 0 0 3 0x40014200 tmoslp softclock 96273 522844 0 0 3 0x40014200 idle0 1 410331 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10383 11718K 11740K 166960K 13999 0 pcb 17 16K 18K 166960K 701 0 rtable 197 14K 14K 166960K 868 0 pf 38 18K 67486K 166960K 445 0 ifaddr 34 7K 9K 166960K 227 0 ifgroup 59 2K 2K 166960K 433 0 sysctl 4 1K 9K 166960K 31 0 counters 70 37K 38K 166960K 476 0 ioctlops 0 0K 4K 166960K 2312 0 iov 0 0K 32K 166960K 265 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1541 97K 97K 166960K 4405 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 54 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 191 0 dirhash 12 2K 3K 166960K 129 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 3682 0 sigio 2 0K 0K 166960K 96 0 proc 63 99K 180K 166960K 1136 0 subproc 72 4K 4K 166960K 121 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 687 0 in_multi 58 4K 7K 166960K 273 0 ether_multi 1 0K 0K 166960K 53 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 916 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 4K 166960K 9 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 258 164K 197K 166960K 35731 0 UVM aobj 107 5K 7K 166960K 115 0 pinsyscall 41 82K 100K 166960K 4907 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 226 0 NDP 13 0K 2K 166960K 183 0 temp 84 8652K 8780K 166960K 202661 0 kqueue 13 20K 33K 166960K 804 0 SYN cache 2 8K 16K 166960K 3 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 120 432 0 429 5 4 1 3 0 8 0 rtentry 176 268 0 207 5 0 5 5 0 8 0 unpcb 144 3097 0 3078 35 31 4 6 0 8 3 syncache 336 15 0 15 10 9 1 1 0 8 1 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 1230 0 1225 34 27 7 7 0 8 6 arp 128 26 0 18 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 328 4011 0 4003 51 42 9 12 0 8 8 nd6 144 32 0 20 1 0 1 1 0 8 0 pkpcb 40 138 0 138 13 12 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 170 0 170 6 5 1 1 0 8 1 pppxif 1504 5 0 5 3 3 0 1 0 8 0 pffrag 232 32 0 24 1 0 1 1 0 482 0 pffrnode 88 27 0 19 1 0 1 1 0 8 0 pffrent 40 172 0 164 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 4 0 4 4 4 0 1 0 8 0 pfstitem 24 237 0 163 1 0 1 1 0 8 0 pfstkey 128 237 0 163 3 0 3 3 0 8 0 pfstate 384 237 0 163 8 0 8 8 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 8 0 3 7 2 5 6 0 8 0 art_heap4 256 822 0 551 33 10 23 28 0 8 0 art_table 40 830 0 554 5 0 5 5 0 8 0 art_node 32 262 0 210 2 0 2 2 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 182 0 172 1 0 1 1 0 8 0 shmpl 112 112 0 8 4 0 4 4 0 8 0 dirhash 1024 95 0 78 3 0 3 3 0 8 0 dino2pl 256 8709 0 7194 96 0 96 96 0 8 0 ffsino 296 8709 0 7194 118 0 118 118 0 8 0 nchpl 144 13730 0 12024 64 0 64 64 0 8 0 rtmask 32 30 0 30 8 8 0 1 0 8 0 uvmvnodes 80 10165 0 0 208 0 208 208 0 8 0 vnodes 216 10165 0 0 565 0 565 565 0 8 0 namei 1024 48316 0 48316 14 13 1 6 0 8 1 percpumem 16 253 0 203 1 0 1 1 0 8 0 kstatmem 264 320 0 288 5 2 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 15 0 15 10 9 1 1 0 8 1 scxspl 216 106194 0 106194 21 20 1 8 1 8 1 plimitpl 152 800 0 784 1 0 1 1 0 8 0 sigapl 424 3977 0 3923 9 1 8 9 0 8 0 knotepl 120 900 0 0 24 0 24 24 0 8 0 kqueuepl 224 1594 0 1584 22 19 3 7 0 8 2 pipepl 344 533 0 506 9 6 3 9 0 8 0 fdescpl 528 3926 0 3895 3 0 3 3 0 8 0 filepl 160 27811 0 27559 51 35 16 19 0 8 4 lockfpl 104 1825 0 1823 4 3 1 2 0 8 0 lockfspl 48 642 0 640 1 0 1 1 0 8 0 sessionpl 144 39 0 31 1 0 1 1 0 8 0 pgrppl 48 98 0 82 1 0 1 1 0 8 0 ucredpl 104 4657 0 4643 1 0 1 1 0 8 0 zombiepl 144 5497 0 5494 2 1 1 1 0 8 0 processpl 1248 3977 0 3923 6 1 5 6 0 8 0 procpl 664 10217 0 10157 8 1 7 8 0 8 0 sosppl 168 24 0 24 10 9 1 1 0 8 1 sockpl 752 7832 0 7802 107 95 12 18 0 8 8 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 132 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 72 0 0 7 1 6 7 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1124 0 0 71 0 71 71 0 8 0 bufpl 280 45277 0 39134 441 1 440 440 0 8 0 anonpl 32 18022 0 0 145 0 145 145 0 246 0 amapchunkpl 152 127630 0 126974 102 72 30 48 0 158 1 amappl16 200 15403 0 15211 150 117 33 41 0 8 13 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 140 0 129 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 4657 0 4627 2 0 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 129 0 117 1 0 1 1 0 8 0 amappl6 120 234 0 230 1 0 1 1 0 8 0 amappl5 112 167 0 156 1 0 1 1 0 8 0 amappl4 104 359 0 340 1 0 1 1 0 8 0 amappl3 96 25359 0 25241 4 0 4 4 0 8 0 amappl2 88 780 0 718 2 0 2 2 0 8 0 amappl1 80 24894 0 24318 16 1 15 15 0 8 0 amappl 88 34289 0 34100 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 257 0 257 4 4 0 1 0 8 0 dma64 64 8 0 8 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 114 0 8 2 0 2 2 0 8 0 uaddrrnd 24 3926 0 3895 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3926 0 3895 1 0 1 1 0 8 0 vmmpekpl 168 28844 0 28790 3 0 3 3 0 8 0 vmmpepl 168 252911 0 250744 180 60 120 120 0 357 6 vmsppl 488 3925 0 3895 5 0 5 5 0 8 0 rwobjpl 80 76004 0 64645 241 1 240 240 0 8 2 pdppl 4096 7860 0 7790 146 72 74 84 0 8 4 pvpl 32 27113 0 0 218 1 217 217 0 265 0 pmappl 256 3925 0 3895 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 453 0 141 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83837ff0) 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 __mp_lock(ffffffff8398dd88) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8398dd88) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(0,1) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,1) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 msleep_nsec(ffffffff837b0a78,ffffffff837b0a40,4,ffffffff83383e73,ffffffffffffffff) at msleep_nsec+0x1b5 sys/kern/kern_synch.c:202 reaper(ffff8000ffffc2a0) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff83837ff0) 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 __mp_lock(ffffffff8398dd88) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8398dd88) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(0,1) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,1) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 msleep_nsec(ffffffff837b0a78,ffffffff837b0a40,4,ffffffff83383e73,ffffffffffffffff) at msleep_nsec+0x1b5 sys/kern/kern_synch.c:202 reaper(ffff8000ffffc2a0) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -10 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: 0x7b1ba414fda0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7b1ba414fda0, count: -1