uvm_fault(0xffffee806f3831f0, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82ffc818 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003c48f850 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82ffc818 Starting stack trace... panic(ffffffff834ea016) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c48f7a0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff8000333962d0,ffffee80657c7b40,ffff80003c48f980) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690 sys_futimes(ffff8000333962d0,ffff80003c48fad0,ffff80003c48fa20) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732 syscall(ffff80003c48fad0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c48fad0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x65f5b9a2ac0, 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 * 69019 12497 0 0 0 1 syz-executor 170130 46909 0 0 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7cac06206550, 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(0xffffee806f3831f0, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7cac06206550, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4b3c30 rbx 0 rdx 0 rcx 0xffff800033397cc0 rax 0x2a r8 0xffff80003c4b3b60 r9 0x1 r10 0x135ffedb66c1e815 r11 0xae0cc761c3389d8d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff822964c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4b3bb0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=69019 pid=12497 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000333962d0,0xffffffff83b10a18 process=0xffff80003c3d66a0 user=0xffff80003c4ae000, vmspace=0xffffee806c4e87c0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *12497 69019 55443 0 7 0 syz-executor 46909 170130 97270 0 7 0 syz-executor 46909 66055 97270 0 3 0x4000000 sbar syz-executor 60256 464026 73467 0 3 0x80 nanoslp syz-executor 60256 139167 73467 0 3 0x4000080 kqsel syz-executor 21546 193643 29897 0 3 0x80 nanoslp syz-executor 21546 154104 29897 0 3 0x4000080 wsevent_read syz-executor 21546 366424 29897 0 3 0x4000080 wsevent_read syz-executor 21546 292047 29897 0 3 0x4000080 fsleep syz-executor 99331 374645 45181 0 3 0x80 nanoslp syz-executor 99331 259149 45181 0 3 0x4000080 kqread syz-executor 21658 335737 81513 -1 3 0x90 nanoslp syz-executor 21658 395231 81513 -1 3 0x4000090 nanoslp syz-executor 21658 478308 81513 -1 3 0x4000090 fsleep syz-executor 76192 197591 35738 0 3 0x80 nanoslp syz-executor 76192 455826 35738 0 3 0x4000080 kqsel syz-executor 76192 96466 35738 0 3 0x4000080 fsleep syz-executor 40833 278002 89101 0 3 0x80 nanoslp syz-executor 40833 243665 89101 0 3 0x4000080 msgwait syz-executor 40833 83249 89101 0 3 0x4000080 fsleep syz-executor 89101 295865 81815 0 2 0x2 syz-executor 23798 170770 0 0 3 0x14280 nfsidl nfsio 46923 347959 0 0 3 0x14280 nfsidl nfsio 12229 160642 0 0 3 0x14280 nfsidl nfsio 16663 10515 0 0 3 0x14280 nfsidl nfsio 71206 114480 0 0 3 0x14280 nfsidl nfsio 66847 397765 0 0 3 0x14280 nfsidl nfsio 81988 349615 0 0 3 0x14280 nfsidl nfsio 62406 329883 0 0 3 0x14280 nfsidl nfsio 66891 245100 0 0 3 0x14280 nfsidl nfsio 59271 466321 0 0 3 0x14280 nfsidl nfsio 61118 418564 0 0 3 0x14280 nfsidl nfsio 86352 82523 0 0 3 0x14280 nfsidl nfsio 63131 212969 0 0 3 0x14280 nfsidl nfsio 36707 210950 0 0 3 0x14280 nfsidl nfsio 38386 181445 0 0 3 0x14280 nfsidl nfsio 88607 79927 0 0 3 0x14280 nfsidl nfsio 91777 400356 0 0 3 0x14280 nfsidl nfsio 37161 35683 0 0 3 0x14280 nfsidl nfsio 99479 251828 0 0 3 0x14280 nfsidl nfsio 9140 394361 0 0 3 0x14280 nfsidl nfsio 29897 451034 81815 0 3 0x82 nanoslp syz-executor 55443 16493 81815 0 3 0x82 nanoslp syz-executor 97270 143974 81815 0 3 0x82 nanoslp syz-executor 73467 389327 81815 0 3 0x82 nanoslp syz-executor 81513 48492 81815 0 2 0x2 syz-executor 35738 160638 81815 0 3 0x82 nanoslp syz-executor 45181 387128 81815 0 3 0x82 nanoslp syz-executor 81815 40305 73230 0 3 0x82 kqread syz-executor 73230 68138 12741 0 3 0x10008a sigsusp ksh 12741 305974 39026 0 3 0x98 kqread sshd-session 39026 64863 15840 0 3 0x92 kqread sshd-session 19728 517011 1 0 3 0x100083 ttyin getty 15840 280166 1 0 3 0x88 kqread sshd 45031 24065 8750 74 3 0x1100092 bpf pflogd 8750 35818 1 0 3 0x80 sbwait pflogd 3515 260111 81661 73 3 0x1100090 kqread syslogd 81661 389670 1 0 3 0x100082 sbwait syslogd 62298 283459 1 0 3 0x100080 kqread resolvd 56580 465708 95504 77 3 0x100092 kqread dhcpleased 61745 176385 95504 77 3 0x100092 kqread dhcpleased 95504 57800 1 0 3 0x80 kqread dhcpleased 94852 77729 0 0 3 0x14200 bored smr 63693 117446 0 0 3 0x14200 pgzero zerothread 28184 204507 0 0 3 0x14200 aiodoned aiodoned 79104 36035 0 0 3 0x14200 syncer update 59325 225823 0 0 3 0x14200 cleaner cleaner 96257 133582 0 0 3 0x14200 reaper reaper 54793 286964 0 0 3 0x14200 pgdaemon pagedaemon 13419 422609 0 0 3 0x14200 bored viomb 35893 181220 0 0 3 0x40014200 acpi0 acpi0 97219 367940 0 0 3 0x40014200 idle1 24775 261427 0 0 3 0x14200 bored softnet1 853 246291 0 0 3 0x14200 netlock softnet0 75722 181065 0 0 3 0x14200 smrbar systqmp 16048 319318 0 0 3 0x14200 bored systq 65744 449788 0 0 3 0x14200 tmoslp softclockmp 67164 370782 0 0 3 0x40014200 tmoslp softclock 38336 143262 0 0 3 0x40014200 idle0 1 485053 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 46909 (syz-executor) thread 0xffff8000333962d0 (66055) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a20e40) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 75722 (systqmp) thread 0xffff8000ffffe530 (181065) shared rwlock systqmp r = 0 (0xffffffff8392f308) #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 11097 12165K 12358K 166960K 12538 0 pcb 18 12K 13K 166960K 67 0 rtable 253 9K 10K 166960K 442 0 pf 40 18K 25K 166960K 124 0 ifaddr 43 7K 8K 166960K 59 0 ifgroup 59 2K 2K 166960K 84 0 sysctl 3 1K 9K 166960K 7 0 counters 72 37K 38K 166960K 98 0 ioctlops 0 0K 4K 166960K 1543 0 iov 0 0K 16K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1579 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 425 0 sigio 0 0K 0K 166960K 2 0 proc 72 115K 164K 166960K 618 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 29 0 in_multi 98 7K 7K 166960K 117 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 205 917K 917K 166960K 205 0 exec 0 0K 1K 166960K 424 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 244 169K 176K 166960K 5632 0 UVM aobj 44 2K 2K 166960K 44 0 pinsyscall 43 86K 102K 166960K 1617 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 11 0 NDP 13 0K 2K 166960K 38 0 temp 53 9118K 9174K 166960K 11134 0 kqueue 18 28K 33K 166960K 76 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 52 0 49 1 0 1 1 0 8 0 rtentry 176 128 0 18 6 0 6 6 0 8 0 unpcb 144 182 0 163 2 0 2 2 0 8 1 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 107 0 103 4 0 4 4 0 8 3 arp 136 20 0 4 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 320 0 308 4 0 4 4 0 8 2 nd6 152 28 0 3 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 10 0 10 1 0 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pfstscr 40 12 0 6 1 0 1 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfanchor 1288 9 0 8 1 0 1 1 0 8 0 pftag 88 2 0 2 1 0 1 1 0 8 1 pfstitem 24 32 0 0 1 0 1 1 0 8 0 pfstkey 128 40 0 8 2 0 2 2 0 8 0 pfstate 448 32 0 4 4 0 4 4 0 8 0 pfrule 1360 26 0 20 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 543 0 50 32 0 32 32 0 8 1 art_table 40 546 0 50 6 0 6 6 0 8 0 art_node 32 128 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 1 0 1 1 0 8 0 semapl 72 20 0 10 1 0 1 1 0 8 0 shmpl 112 41 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2061 0 595 93 0 93 93 0 8 0 ffsino 296 2061 0 595 114 0 114 114 0 8 0 nchpl 144 2654 0 947 64 0 64 64 0 8 0 vnodes 216 2284 0 0 127 0 127 127 0 8 0 namei 1024 8816 0 8816 2 0 2 2 0 8 2 percpumem 16 64 0 13 1 0 1 1 0 8 0 kstatmem 264 45 0 14 3 0 3 3 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 9124 0 9124 4 3 1 3 1 8 1 plimitpl 152 65 0 48 1 0 1 1 0 8 0 sigapl 424 762 0 694 8 0 8 8 0 8 0 knotepl 120 518 0 0 16 0 16 16 0 8 0 kqueuepl 224 149 0 132 3 0 3 3 0 8 1 pipepl 344 151 0 124 3 0 3 3 0 8 0 fdescpl 528 726 0 694 3 0 3 3 0 8 0 filepl 160 3583 0 3355 13 0 13 13 0 8 2 lockfpl 104 150 0 145 1 0 1 1 0 8 0 lockfspl 48 65 0 60 1 0 1 1 0 8 0 sessionpl 144 42 0 33 1 0 1 1 0 8 0 pgrppl 48 52 0 35 1 0 1 1 0 8 0 ucredpl 104 445 0 430 1 0 1 1 0 8 0 zombiepl 144 694 0 694 1 0 1 1 0 8 1 processpl 1232 762 0 694 6 0 6 6 0 8 0 procpl 664 1229 0 1149 8 0 8 8 0 8 0 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 752 567 0 533 8 0 8 8 0 8 4 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 162 0 0 11 0 11 11 0 8 0 bufpl 272 3079 0 107 199 0 199 199 0 8 0 anonpl 32 5750 0 0 47 0 47 47 0 246 0 amapchunkpl 152 17374 0 16744 36 0 36 36 0 158 9 amappl16 200 2199 0 2170 6 0 6 6 0 8 3 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 447 0 445 1 0 1 1 0 8 0 amappl13 176 150 0 138 1 0 1 1 0 8 0 amappl12 168 987 0 956 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 300 0 300 1 1 0 1 0 8 0 amappl8 136 103 0 101 1 0 1 1 0 8 0 amappl7 128 148 0 135 1 0 1 1 0 8 0 amappl6 120 170 0 168 1 0 1 1 0 8 0 amappl5 112 97 0 86 1 0 1 1 0 8 0 amappl4 104 301 0 279 1 0 1 1 0 8 0 amappl3 96 3372 0 3255 4 0 4 4 0 8 0 amappl2 88 565 0 504 2 0 2 2 0 8 0 amappl1 80 12148 0 11536 17 0 17 17 0 8 3 amappl 88 4831 0 4659 5 0 5 5 0 92 0 uvmvnodes 80 112 0 0 3 0 3 3 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 43 0 0 1 0 1 1 0 8 0 uaddrrnd 24 726 0 694 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 726 0 694 1 0 1 1 0 8 0 vmmpekpl 168 7939 0 7900 3 0 3 3 0 8 0 vmmpepl 168 54998 0 53030 99 0 99 99 0 357 11 vmsppl 488 725 0 694 5 0 5 5 0 8 1 rwobjpl 80 18486 0 17389 28 0 28 28 0 8 4 pdppl 4096 1459 0 1388 99 28 71 83 0 8 0 pvpl 32 12007 0 0 98 1 97 97 0 265 0 pmappl 256 725 0 694 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 481 0 31 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8391bff0) 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(ffffffff83a20640) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a20640) 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(ffffffff83a20640) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:143 [inline] __mp_lock(ffffffff83a20640) at __mp_lock+0x190 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: 0x7a5843bee220, count: 4 ddb{0}> trace x86_ipi_db(ffffffff8391bff0) 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(ffffffff83a20640) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a20640) 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(ffffffff83a20640) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:143 [inline] __mp_lock(ffffffff83a20640) at __mp_lock+0x190 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: 0x7a5843bee220, 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: 0x7cac06206550, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7cac06206550, count: -1