uvm_fault(0xfffffd806c6efb88, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82a9d098 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003c3ed4d0 gsbase 0xffff8000299adff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82a9d098 Starting stack trace... panic(ffffffff83482cd4) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c3ed420) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003b7d14e8,fffffd8066d69d80,ffff80003c3ed5e0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimens(ffff80003b7d14e8,ffff80003c3ed730,ffff80003c3ed680) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847 syscall(ffff80003c3ed730) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ed730) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8533b634bf0, count: 250 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 464784 47223 0 0 0 0 syz-executor *187425 53421 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7f1f1ae41b50, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c6efb88, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7f1f1ae41b50, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c41fdb0 rbx 0 rdx 0 rcx 0xffff80003b7d02c0 rax 0x2a r8 0xffff80003c41fce0 r9 0x1 r10 0x90b111e3f278e4be r11 0x95c790b82d569d9d r12 0 r13 0xffffffff817ec628 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff82edc4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c41fd30 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=187425 pid=53421 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=0xffff8000fffefca0,0xffff80003b7d1cc0 process=0xffff80002a38e1c8 user=0xffff80003c41a000, vmspace=0xfffffd806c6ef018 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76614 140608 59750 0 2 0 syz-executor 47223 464784 90687 0 7 0 syz-executor 47223 222992 90687 0 3 0x4000000 sbar syz-executor *53421 187425 46805 0 7 0 syz-executor 53421 332213 46805 0 3 0x4000080 fsleep syz-executor 13374 337665 10994 0 2 0 syz-executor 13374 148022 10994 0 3 0x4000080 fsleep syz-executor 13374 3737 10994 0 3 0x4000080 fsleep syz-executor 41807 341850 7138 0 3 0x80 nanoslp syz-executor 41807 267563 7138 0 3 0x4000080 fsleep syz-executor 41807 502199 7138 0 3 0x4000080 fsleep syz-executor 41807 61420 7138 0 3 0x4000080 fsleep syz-executor 80509 161554 85695 0 3 0x80 nanoslp syz-executor 80509 191350 85695 0 3 0x4000080 fsleep syz-executor 80509 213398 85695 0 3 0x4000080 sbwait syz-executor 80509 32725 85695 0 3 0x4000080 fsleep syz-executor 63852 258635 74991 0 2 0 syz-executor 63852 152950 74991 0 3 0x4000080 fsleep syz-executor 90687 519163 6814 0 3 0x82 nanoslp syz-executor 74991 484120 6814 0 3 0x82 nanoslp syz-executor 85695 185004 6814 0 3 0x82 nanoslp syz-executor 46805 460422 6814 0 3 0x82 nanoslp syz-executor 7138 246569 6814 0 3 0x82 nanoslp syz-executor 88099 79865 6814 0 3 0x82 nanoslp syz-executor 59750 395644 6814 0 3 0x82 nanoslp syz-executor 10994 175137 6814 0 3 0x82 nanoslp syz-executor 6814 505460 59749 0 3 0x82 kqread syz-executor 59749 264560 96147 0 3 0x10008a sigsusp ksh 96147 357089 47664 0 3 0x98 kqread sshd-session 47664 222984 81349 0 3 0x92 kqread sshd-session 83764 1823 1 0 3 0x100083 ttyopn getty 81349 235565 1 0 3 0x88 kqread sshd 68107 414947 54136 74 3 0x1100092 bpf pflogd 54136 60013 1 0 3 0x80 sbwait pflogd 94754 509353 20873 73 3 0x1100090 kqread syslogd 20873 470744 1 0 3 0x100082 sbwait syslogd 87686 100168 1 0 3 0x100080 kqread resolvd 86112 239701 67756 77 3 0x100092 kqread dhcpleased 56354 241349 67756 77 3 0x100092 kqread dhcpleased 67756 229735 1 0 3 0x80 kqread dhcpleased 486 95503 0 0 3 0x14200 bored smr 71563 29634 0 0 2 0x14200 zerothread 77985 2263 0 0 3 0x14200 aiodoned aiodoned 83225 164214 0 0 3 0x14200 syncer update 33234 191264 0 0 3 0x14200 cleaner cleaner 92256 363078 0 0 3 0x14200 reaper reaper 33959 112285 0 0 3 0x14200 pgdaemon pagedaemon 50806 55798 0 0 3 0x14200 bored viomb 69243 357962 0 0 3 0x40014200 acpi0 acpi0 35603 292973 0 0 3 0x40014200 idle1 45453 161423 0 0 3 0x14200 bored softnet1 69190 519994 0 0 3 0x14200 netlock softnet0 23839 422546 0 0 2 0x40014200 systqmp 27376 513666 0 0 3 0x14200 bored systq 21777 48558 0 0 3 0x14200 tmoslp softclockmp 77360 479358 0 0 3 0x40014200 tmoslp softclock 10214 89196 0 0 3 0x40014200 idle0 1 158188 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 47223 (syz-executor) thread 0xffff80003b7d14e8 (222992) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11068 12159K 12320K 166960K 12451 0 pcb 17 13K 13K 166960K 73 0 rtable 203 7K 7K 166960K 410 0 pf 36 18K 19K 166960K 70 0 ifaddr 39 6K 7K 166960K 60 0 ifgroup 51 2K 2K 166960K 75 0 sysctl 4 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 92 0 ioctlops 0 0K 4K 166960K 1663 0 iov 0 0K 16K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1297 82K 82K 166960K 1599 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 23 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 437 0 sigio 0 0K 0K 166960K 5 0 proc 72 115K 164K 166960K 582 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 46 0 in_multi 88 6K 7K 166960K 125 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 436 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 151K 165K 166960K 5880 0 UVM aobj 3 2K 2K 166960K 4 0 pinsyscall 43 86K 102K 166960K 1574 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 11 0K 2K 166960K 36 0 temp 52 9077K 9150K 166960K 17148 0 kqueue 13 20K 28K 166960K 89 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 120 116 0 113 3 0 3 3 0 8 2 rtentry 176 126 0 40 6 0 6 6 0 8 0 unpcb 144 156 0 136 2 0 2 2 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 179 0 174 7 0 7 7 0 8 6 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 423 0 414 7 0 7 7 0 8 6 nd6 152 24 0 5 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 9 0 9 1 0 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 6 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 7 0 0 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 2 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 40 0 0 1 0 1 1 0 8 0 pfstkey 128 41 0 1 2 0 2 2 0 8 0 pfstate 448 40 0 1 5 0 5 5 0 8 0 pfrule 1360 89 0 82 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 567 0 185 29 0 29 29 0 8 1 art_table 40 569 0 185 5 0 5 5 0 8 0 art_node 32 126 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 21 0 11 1 0 1 1 0 8 0 shmpl 112 1 0 1 1 0 1 1 0 8 1 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2166 0 701 92 0 92 92 0 8 0 ffsino 296 2166 0 701 114 0 114 114 0 8 0 nchpl 144 2779 0 1077 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2357 0 0 131 0 131 131 0 8 0 namei 1024 8859 0 8859 2 1 1 2 0 8 1 percpumem 16 61 0 12 1 0 1 1 0 8 0 kstatmem 264 40 0 16 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 12400 0 12400 9 1 8 8 1 8 8 plimitpl 152 95 0 78 1 0 1 1 0 8 0 sigapl 424 750 0 702 7 1 6 7 0 8 0 knotepl 120 484 0 0 15 0 15 15 0 8 0 kqueuepl 224 127 0 118 2 0 2 2 0 8 1 pipepl 344 138 0 110 3 0 3 3 0 8 0 fdescpl 528 733 0 701 3 0 3 3 0 8 0 filepl 160 3484 0 3264 13 0 13 13 0 8 3 lockfpl 104 157 0 155 1 0 1 1 0 8 0 lockfspl 48 61 0 59 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 47 0 30 1 0 1 1 0 8 0 ucredpl 104 433 0 419 1 0 1 1 0 8 0 zombiepl 144 703 0 702 1 0 1 1 0 8 0 processpl 1232 750 0 702 5 1 4 5 0 8 0 procpl 664 1297 0 1238 6 0 6 6 0 8 1 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 752 704 0 672 11 0 11 11 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 453 0 0 29 0 29 29 0 8 0 bufpl 280 4634 0 105 324 0 324 324 0 8 0 anonpl 32 7560 0 0 61 0 61 61 0 246 0 amapchunkpl 152 18400 0 17897 29 0 29 29 0 158 8 amappl16 200 2753 0 2722 17 3 14 15 0 8 7 amappl15 192 22 0 22 1 1 0 1 0 8 0 amappl14 184 439 0 438 1 0 1 1 0 8 0 amappl13 176 149 0 137 1 0 1 1 0 8 0 amappl12 168 1029 0 999 2 0 2 2 0 8 0 amappl11 160 10 0 10 1 1 0 1 0 8 0 amappl10 152 101 0 87 1 0 1 1 0 8 0 amappl9 144 267 0 267 1 1 0 1 0 8 0 amappl8 136 134 0 132 1 0 1 1 0 8 0 amappl7 128 146 0 133 1 0 1 1 0 8 0 amappl6 120 163 0 161 1 0 1 1 0 8 0 amappl5 112 92 0 81 1 0 1 1 0 8 0 amappl4 104 285 0 265 1 0 1 1 0 8 0 amappl3 96 3553 0 3438 4 0 4 4 0 8 0 amappl2 88 522 0 460 2 0 2 2 0 8 0 amappl1 80 10478 0 9870 14 0 14 14 0 8 1 amappl 88 5107 0 4936 5 0 5 5 0 92 0 uvmvnodes 80 111 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 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 128 256 0 256 2 1 1 1 0 8 1 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 3 0 1 1 0 1 1 0 8 0 uaddrrnd 24 733 0 701 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 733 0 701 1 0 1 1 0 8 0 vmmpekpl 168 7598 0 7564 2 0 2 2 0 8 0 vmmpepl 168 54087 0 52116 99 1 98 98 0 357 9 vmsppl 488 732 0 701 5 0 5 5 0 8 1 rwobjpl 80 17718 0 16663 27 0 27 27 0 8 1 pdppl 4096 1473 0 1402 97 26 71 85 0 8 0 pvpl 32 14185 0 0 116 1 115 115 0 265 0 pmappl 256 732 0 701 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 296 0 30 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838c7ff0) 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(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7b3ceff10250, count: 4 ddb{0}> trace x86_ipi_db(ffffffff838c7ff0) 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(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7b3ceff10250, count: -11 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: 0x7f1f1ae41b50, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7f1f1ae41b50, count: -1