uvm_fault(0xfffffd806c8deb90, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff825a8d18 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002c7e7f20 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff825a8d18 Starting stack trace... panic(ffffffff833d1c45) at panic+464 kerntrap(ffff80002c7e7e70) at kerntrap+779 alltraps_kern_meltdown() at alltraps_kern_meltdown+123 dt_ioctl_record_stop(ffff800001637000) at dt_ioctl_record_stop+264 dtclose(11e5f,81,2000,ffff80002a271a08) at dtclose+265 spec_close(ffff80002c7e8020) at spec_close+1126 VOP_CLOSE(fffffd80632877b8,81,fffffd80097fd680,ffff80002a271a08) at VOP_CLOSE+306 vn_closefile(fffffd806dc43160,ffff80002a271a08) at vn_closefile+299 fdrop(fffffd806dc43160,ffff80002a271a08) at fdrop+289 closef(fffffd806dc43160,ffff80002a271a08) at closef+402 fdfree(ffff80002a271a08) at fdfree+278 exit1(ffff80002a271a08,0,0,1) at exit1+1398 sys_exit(ffff80002a271a08,ffff80002c7e8390,ffff80002c7e82e0) at sys_exit+26 syscall(ffff80002c7e8390) at syscall+2839 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0x77d115b43020, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+199: movl $0,%gs:1672 TID PID UID PRFLAGS PFLAGS CPU COMMAND *204968 99992 0 0 0 1 syz-executor 164188 27772 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+199 end of kernel end trace frame: 0x793b9dbe3ca0, 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(0xfffffd806c8deb90, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+199 end of kernel end trace frame: 0x793b9dbe3ca0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 18446603336929230848 rbx 0 rdx 0 rcx 18446603340516072616 rax 42 r8 18446603336929230640 r9 1 r10 2209039615858904363 r11 11073883771623650223 r12 0 r13 18446744071580320056 Xdoreti+24 r14 0 r15 0 rip 18446744071602836679 proc_trampoline+199 cs 8 rflags 582 rsp 18446603336929230720 ss 16 proc_trampoline+199: movl $0,%gs:1672 ddb{1}> show proc PROC (syz-executor) tid=204968 pid=99992 tcnt=3 stat=onproc flags process=0 proc=0 runpri=84, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe9248,0xffff8000fffe87f8 process=0xffff800039bfa6a0 user=0xffff80002a337000, vmspace=0xfffffd8062c549b0 estcpu=34, cpticks=10, pctcpu=0.8, user=9, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17811 91861 31987 0 2 0 syz-executor 17811 472792 31987 0 2 0x4000000 syz-executor 8483 249966 66908 0 2 0 syz-executor 8483 106835 66908 0 3 0x4000080 fsleep syz-executor 8483 184113 66908 0 2 0x4000000 syz-executor *99992 204968 29677 0 7 0 syz-executor 99992 453013 29677 0 3 0x4000080 bell syz-executor 99992 378448 29677 0 3 0x4000080 fsleep syz-executor 45811 235026 0 0 3 0x14200 acct acct 43916 100707 88779 0 2 0 syz-executor 43916 521512 88779 0 3 0x4000080 sbwait syz-executor 43916 432101 88779 0 3 0x4000080 sbufrcv syz-executor 43916 176158 88779 0 3 0x4000080 sbufrcv syz-executor 43916 339322 88779 0 2 0x4000000 syz-executor 66117 207803 23398 0 3 0x80 nanoslp syz-executor 66117 376301 23398 0 3 0x4000080 sbwait syz-executor 66117 518259 23398 0 3 0x4000080 fsleep syz-executor 66117 168806 23398 0 3 0x4000080 fsleep syz-executor 66117 938 23398 0 3 0x4000080 fsleep syz-executor 12529 425047 41651 0 3 0x80 nanoslp syz-executor 12529 155798 41651 0 3 0x4000080 sbwait syz-executor 12529 332755 41651 0 3 0x4000080 fsleep syz-executor 45183 60073 0 0 3 0x14280 nfsidl nfsio 61045 443922 0 0 3 0x14280 nfsidl nfsio 64223 487194 0 0 3 0x14280 nfsidl nfsio 18147 90102 0 0 3 0x14280 nfsidl nfsio 29346 303667 0 0 3 0x14280 nfsidl nfsio 49578 461908 0 0 3 0x14280 nfsidl nfsio 54863 403366 0 0 3 0x14280 nfsidl nfsio 47823 55217 0 0 3 0x14280 nfsidl nfsio 83639 291016 0 0 3 0x14280 nfsidl nfsio 12768 363092 0 0 3 0x14280 nfsidl nfsio 36142 115118 0 0 3 0x14280 nfsidl nfsio 34601 44289 0 0 3 0x14280 nfsidl nfsio 82924 96403 0 0 3 0x14280 nfsidl nfsio 20064 255620 0 0 3 0x14280 nfsidl nfsio 78460 76744 0 0 3 0x14280 nfsidl nfsio 12554 463846 0 0 3 0x14280 nfsidl nfsio 96469 149287 0 0 3 0x14280 nfsidl nfsio 460 384286 0 0 3 0x14280 nfsidl nfsio 66908 363613 34534 0 3 0x82 nanoslp syz-executor 96573 176476 34534 0 3 0x82 wait syz-executor 88779 415001 34534 0 3 0x82 nanoslp syz-executor 29677 437005 34534 0 3 0x82 nanoslp syz-executor 63191 393099 34534 0 3 0x82 nanoslp syz-executor 23398 174650 34534 0 3 0x82 nanoslp syz-executor 31987 336460 34534 0 3 0x82 nanoslp syz-executor 41651 515379 34534 0 3 0x82 nanoslp syz-executor 34534 372405 45278 0 3 0x82 kqread syz-executor 45278 38152 37689 0 3 0x10008a sigsusp ksh 37689 363224 96012 0 3 0x98 kqread sshd-session 96012 235674 82259 0 3 0x92 kqread sshd-session 30925 487367 1 0 3 0x100083 ttyin getty 82259 278601 1 0 3 0x88 kqread sshd 96419 213587 2149 74 3 0x1100092 bpf pflogd 2149 401372 1 0 3 0x80 sbwait pflogd 96941 6524 86627 73 3 0x1100090 kqread syslogd 86627 372558 1 0 3 0x100082 sbwait syslogd 36093 63961 1 0 3 0x100080 kqread resolvd 938 408735 49187 77 3 0x100092 kqread dhcpleased 23344 400805 49187 77 3 0x100092 kqread dhcpleased 49187 217617 1 0 3 0x80 kqread dhcpleased 3381 140098 0 0 3 0x14200 bored smr 61477 15144 0 0 2 0x14200 zerothread 8237 241609 0 0 3 0x14200 aiodoned aiodoned 98575 266249 0 0 3 0x14200 syncer update 34793 69842 0 0 3 0x14200 cleaner cleaner 27772 164188 0 0 7 0x14200 reaper 89812 219340 0 0 3 0x14200 pgdaemon pagedaemon 79005 505437 0 0 3 0x14200 bored viomb 20935 315761 0 0 3 0x40014200 acpi0 acpi0 92947 409460 0 0 3 0x40014200 idle1 75171 64554 0 0 3 0x14200 bored softnet1 75315 178468 0 0 3 0x14200 netlock softnet0 69813 319878 0 0 2 0x40014200 systqmp 20358 236582 0 0 3 0x14200 bored systq 81546 427943 0 0 3 0x14200 tmoslp softclockmp 49326 189173 0 0 3 0x40014200 tmoslp softclock 99858 195841 0 0 3 0x40014200 idle0 1 476253 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 8483 (syz-executor) thread 0xffff80002a271770 (184113) Process 43916 (syz-executor) thread 0xffff800039bf7270 (521512) Process 43916 (syz-executor) thread 0xffff800039bf6aa8 (339322) Process 27772 (reaper) thread 0xffff8000ffffdc90 (164188) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10261 11079K 11720K 166960K 16805 0 pcb 18 16K 32K 166960K 1075 0 rtable 194 14K 16K 166960K 1118 0 pf 38 18K 67485K 166960K 467 0 ifaddr 31 6K 8K 166960K 317 0 ifgroup 59 2K 3K 166960K 599 0 sysctl 4 1K 9K 166960K 115 0 counters 70 37K 38K 166960K 676 0 ioctlops 0 0K 8K 166960K 2382 0 iov 1 4K 28K 166960K 267 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1432 90K 91K 166960K 4926 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 65 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 334 0 dirhash 12 2K 2K 166960K 69 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 4126 0 sigio 0 0K 0K 166960K 71 0 proc 76 131K 180K 166960K 1213 0 subproc 72 4K 4K 166960K 173 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 723 0 in_multi 54 3K 7K 166960K 401 0 ether_multi 2 0K 0K 166960K 54 0 mrt 3 0K 0K 166960K 42 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 1112 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 12 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 265 172K 191K 166960K 38899 0 UVM aobj 122 27K 29K 166960K 137 0 pinsyscall 43 86K 101K 166960K 5491 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 222 0 NDP 13 0K 2K 166960K 232 0 temp 81 8668K 8802K 166960K 183090 0 kqueue 14 22K 31K 166960K 805 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 120 600 0 597 9 8 1 3 0 8 0 rtentry 176 337 0 278 7 3 4 6 0 8 0 unpcb 144 2526 0 2505 17 13 4 6 0 8 3 syncache 336 6 0 6 3 3 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 1086 0 1081 16 15 1 7 0 8 0 arp 136 47 0 35 1 0 1 1 0 8 0 inpcb 328 4029 0 4019 19 12 7 7 0 8 5 nd6 152 66 0 52 1 0 1 1 0 8 0 pkpcb 40 29 0 28 5 4 1 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 mppekey 1024 4 0 4 4 4 0 1 0 8 0 ppxss 1192 235 0 235 3 2 1 1 0 8 1 pppxif 1504 37 0 37 8 7 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 27 0 15 1 0 1 1 0 482 0 pffrnode 88 25 0 13 1 0 1 1 0 8 0 pffrent 40 168 0 156 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 223 0 109 1 0 1 1 0 8 0 pfstkey 128 225 0 111 5 0 5 5 0 8 0 pfstate 448 224 0 110 14 0 14 14 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 rttmr 136 7 0 7 5 4 1 1 0 8 1 art_heap8 4096 4 0 2 4 1 3 3 0 8 1 art_heap4 256 1762 0 1488 36 13 23 30 0 8 1 art_table 40 1766 0 1490 5 0 5 5 0 8 1 art_node 32 329 0 276 1 0 1 1 0 8 0 sysvmsgpl 40 47 0 7 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 327 0 317 1 0 1 1 0 8 0 shmpl 112 119 0 11 4 0 4 4 0 8 0 dirhash 1024 55 0 38 3 0 3 3 0 8 0 dino2pl 256 9260 0 7735 97 0 97 97 0 8 0 ffsino 296 9260 0 7735 119 0 119 119 0 8 0 nchpl 144 14666 0 12938 65 0 65 65 0 8 0 rtmask 32 56 0 56 2 1 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 53702 0 53701 7 5 2 2 0 8 1 percpumem 16 353 0 303 1 0 1 1 0 8 0 vcpupl 3968 12 0 1 2 0 2 2 0 8 0 vmpool 840 15 0 4 2 0 2 2 0 8 0 kstatmem 264 396 0 360 4 1 3 4 0 8 0 scsiplug 72 18 0 18 6 5 1 1 0 8 1 scxspl 216 87858 0 87858 16 14 2 8 1 8 2 plimitpl 152 1298 0 1280 1 0 1 1 0 8 0 sigapl 424 4403 0 4336 8 0 8 8 0 8 0 knotepl 120 575 0 0 17 0 17 17 0 8 0 kqueuepl 224 1922 0 1911 18 13 5 5 0 8 4 pipepl 344 707 0 680 12 9 3 9 0 8 0 fdescpl 528 4322 0 4290 3 0 3 3 0 8 0 filepl 160 30949 0 30726 32 16 16 18 0 8 3 lockfpl 104 1684 0 1682 1 0 1 1 0 8 0 lockfspl 48 631 0 629 1 0 1 1 0 8 0 sessionpl 144 35 0 26 1 0 1 1 0 8 0 pgrppl 48 98 0 81 1 0 1 1 0 8 0 ucredpl 104 6175 0 6162 1 0 1 1 0 8 0 zombiepl 144 4910 0 4908 2 1 1 1 0 8 0 processpl 1232 4403 0 4336 6 0 6 6 0 8 0 procpl 664 11104 0 11022 10 2 8 8 0 8 0 sosppl 176 30 0 30 5 4 1 1 0 8 1 sockpl 752 7430 0 7395 42 30 12 17 0 8 7 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 131 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 38 0 0 5 0 5 5 0 8 0 mtagpl 96 91 0 0 3 0 3 3 0 8 0 mbufpl 256 1306 0 0 78 0 78 78 0 8 0 bufpl 280 35572 0 29435 439 0 439 439 0 8 0 anonpl 32 12070 0 0 98 0 98 98 0 246 0 amapchunkpl 152 138304 0 137755 65 37 28 38 0 158 4 amappl16 200 14038 0 14000 72 56 16 28 0 8 5 amappl15 192 24 0 24 3 3 0 1 0 8 0 amappl14 184 7 0 7 1 1 0 1 0 8 0 amappl13 176 569 0 567 1 0 1 1 0 8 0 amappl12 168 4763 0 4719 3 0 3 3 0 8 0 amappl11 160 9 0 9 4 4 0 1 0 8 0 amappl10 152 52 0 37 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 195 0 194 1 0 1 1 0 8 0 amappl6 120 415 0 401 1 0 1 1 0 8 0 amappl5 112 95 0 84 1 0 1 1 0 8 0 amappl4 104 495 0 464 1 0 1 1 0 8 0 amappl3 96 23861 0 23759 4 1 3 3 0 8 0 amappl2 88 4420 0 4342 2 0 2 2 0 8 0 amappl1 80 26367 0 25766 15 1 14 14 0 8 0 amappl 88 37344 0 37159 5 0 5 5 0 92 0 uvmvnodes 80 213 0 0 5 0 5 5 0 8 0 dma65536 65536 2 0 2 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 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 dma2048 2048 1 0 1 1 1 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 11 0 11 6 6 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 72 136 0 15 3 0 3 3 0 8 0 uaddrrnd 24 4322 0 4290 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4322 0 4290 1 0 1 1 0 8 0 vmmpekpl 168 30719 0 30646 4 0 4 4 0 8 0 vmmpepl 168 271763 0 269732 139 35 104 108 0 357 6 vmsppl 488 4321 0 4290 6 1 5 5 0 8 0 rwobjpl 80 68411 0 67109 45 12 33 36 0 8 1 pdppl 4096 8682 0 8599 144 61 83 85 0 8 0 pvpl 32 23410 0 0 188 0 188 188 0 265 0 pmappl 256 4336 0 4294 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 445 0 110 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+39: addq $8,%rsp x86_ipi_db(ffffffff837bbff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+15 intr_handler(ffff80002a244660,ffff800000079600) at intr_handler+233 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+399 __mp_lock(ffffffff83932e40) at __mp_lock+402 softintr_dispatch(0) at softintr_dispatch+293 dosoftint(0) at dosoftint+84 Xsoftclock() at Xsoftclock+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+44 msleep_nsec(ffffffff837eeaf8,ffffffff837eeac0,4,ffffffff833b08c6,ffffffffffffffff) at msleep_nsec+62 reaper(ffff8000ffffdc90) at reaper+347 end trace frame: 0x0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff837bbff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+15 intr_handler(ffff80002a244660,ffff800000079600) at intr_handler+233 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+399 __mp_lock(ffffffff83932e40) at __mp_lock+402 softintr_dispatch(0) at softintr_dispatch+293 dosoftint(0) at dosoftint+84 Xsoftclock() at Xsoftclock+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+44 msleep_nsec(ffffffff837eeaf8,ffffffff837eeac0,4,ffffffff833b08c6,ffffffffffffffff) at msleep_nsec+62 reaper(ffff8000ffffdc90) at reaper+347 end trace frame: 0x0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+199: movl $0,%gs:1672 proc_trampoline() at proc_trampoline+199 end of kernel end trace frame: 0x793b9dbe3ca0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+199 end of kernel end trace frame: 0x793b9dbe3ca0, count: -1