uvm_fault(0xfffffd806c6b6200, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82f50ca8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003c4017a0 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82f50ca8 Starting stack trace... panic(ffffffff834e8b9e) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c4016f0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c3d2560,fffffd806a6e61f0,ffff80003c4018d0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2778 sys_futimes(ffff80003c3d2560,ffff80003c401a20,ffff80003c401970) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2820 syscall(ffff80003c401a20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c401a20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc8f8580cf80, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 110 64 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 73497 28149 0 0 0 0 syz-executor * 11337 1154 0 0 0x4000000 1 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0xc8f64f592e0, 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(0xfffffd806c6b6200, 0x98, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xc8f64f592e0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c48b980 rbx 0 rdx 0 rcx 0xffff800039ba2fb8 rax 0x34 r8 0xffff80003c48b8b0 r9 0x1 r10 0x9e49c0e1150d9c27 r11 0x7e4de107797fe5d7 r12 0 r13 0 r14 0xffff800039ba2fb8 r15 0 rip 0xffffffff817713ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c48b900 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=11337 pid=1154 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=79, usrpri=79, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800039ba2028,0xffff80003c3d2040 process=0xffff80003c4666a8 user=0xffff80003c486000, vmspace=0xfffffd806c6b6200 estcpu=29, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28149 73497 95550 0 7 0 syz-executor 28149 320357 95550 0 3 0x4000000 smrbar syz-executor 1154 184843 78216 0 2 0 syz-executor * 1154 11337 78216 0 7 0x4000000 syz-executor 1154 369390 78216 0 2 0x4000000 syz-executor 1154 52099 78216 0 3 0x4000000 sbar syz-executor 15701 365638 25463 0 2 0 syz-executor 15701 327610 25463 0 3 0x4000080 fsleep syz-executor 15701 494230 25463 0 3 0x4000080 fsleep syz-executor 99131 483565 90199 0 2 0 syz-executor 99131 418370 90199 0 3 0x4000080 semwait syz-executor 99131 51675 90199 0 3 0x4000000 biowait syz-executor 99131 431772 90199 0 3 0x4000000 inode syz-executor 64440 394385 49795 0 3 0x80 nanoslp syz-executor 64440 439494 49795 0 2 0x4000000 syz-executor 64440 81256 49795 0 3 0x4000080 fsleep syz-executor 64440 483387 49795 0 3 0x4000080 fsleep syz-executor 86021 500522 0 0 3 0x14280 nfsidl nfsio 34084 149131 0 0 3 0x14280 nfsidl nfsio 73813 412187 0 0 3 0x14280 nfsidl nfsio 9509 61034 0 0 3 0x14280 nfsidl nfsio 15001 426154 0 0 3 0x14280 nfsidl nfsio 64351 171712 0 0 3 0x14280 nfsidl nfsio 17311 501561 0 0 3 0x14280 nfsidl nfsio 73963 469740 0 0 3 0x14280 nfsidl nfsio 1834 162828 0 0 3 0x14280 nfsidl nfsio 70568 327263 0 0 3 0x14280 nfsidl nfsio 35714 263303 0 0 3 0x14280 nfsidl nfsio 19849 430349 0 0 3 0x14280 nfsidl nfsio 62541 245810 0 0 3 0x14280 nfsidl nfsio 5860 379283 0 0 3 0x14280 nfsidl nfsio 81229 254963 0 0 3 0x14280 nfsidl nfsio 39927 116487 0 0 3 0x14280 nfsidl nfsio 69408 405804 0 0 3 0x14280 nfsidl nfsio 60507 342010 0 0 3 0x14280 nfsidl nfsio 34731 178452 0 0 3 0x14280 nfsidl nfsio 36474 438955 0 0 3 0x14280 nfsidl nfsio 11413 123290 69242 0 3 0x82 nanoslp syz-executor 52927 241793 69242 0 2 0x2 syz-executor 49795 155139 69242 0 3 0x82 nanoslp syz-executor 95550 5991 69242 0 3 0x82 nanoslp syz-executor 90199 223932 69242 0 3 0x82 nanoslp syz-executor 78216 300668 69242 0 3 0x82 nanoslp syz-executor 42883 365764 69242 0 3 0x2 biowait syz-executor 25463 255050 69242 0 3 0x82 nanoslp syz-executor 69242 150582 9510 0 3 0x82 kqread syz-executor 9510 477133 24757 0 3 0x10008a sigsusp ksh 24757 240487 56826 0 3 0x98 kqread sshd-session 56826 462951 87292 0 3 0x92 kqread sshd-session 17055 186765 1 0 3 0x100083 ttyopn getty 87292 403450 1 0 3 0x88 kqread sshd 94188 515119 12749 74 3 0x1100092 bpf pflogd 12749 301524 1 0 3 0x80 sbwait pflogd 85870 265491 37496 73 3 0x1100090 kqread syslogd 37496 326316 1 0 3 0x100082 sbwait syslogd 1418 90132 1 0 3 0x100080 kqread resolvd 37862 192760 24306 77 3 0x100092 kqread dhcpleased 18494 397964 24306 77 3 0x100092 kqread dhcpleased 24306 387569 1 0 3 0x80 kqread dhcpleased 11946 500416 0 0 3 0x14200 bored smr 87492 303388 0 0 2 0x14200 zerothread 86321 220143 0 0 3 0x14200 aiodoned aiodoned 74205 164829 0 0 3 0x14200 syncer update 36559 111313 0 0 3 0x14200 cleaner cleaner 53452 270836 0 0 3 0x14200 reaper reaper 87163 29520 0 0 3 0x14200 pgdaemon pagedaemon 53691 223099 0 0 3 0x14200 bored viomb 92428 144239 0 0 3 0x40014200 acpi0 acpi0 48025 160294 0 0 3 0x40014200 idle1 91318 476012 0 0 3 0x14200 bored softnet1 18071 170264 0 0 3 0x14200 netlock softnet0 27678 404066 0 0 3 0x14200 smrbar systqmp 88837 476484 0 0 3 0x14200 bored systq 2867 63546 0 0 3 0x14200 tmoslp softclockmp 94137 353062 0 0 3 0x40014200 tmoslp softclock 28455 367376 0 0 3 0x40014200 idle0 1 514850 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 28149 (syz-executor) thread 0xffff800039ba22c0 (320357) Process 1154 (syz-executor) thread 0xffff80003c3d2560 (52099) Process 99131 (syz-executor) thread 0xffff800039ba27f0 (51675) Process 42883 (syz-executor) thread 0xffff80002a222d08 (365764) Process 27678 (systqmp) thread 0xffff8000ffffe298 (404066) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11070 12221K 12355K 166960K 12596 0 pcb 17 12K 12K 166960K 68 0 rtable 179 5K 10K 166960K 380 0 pf 33 17K 22K 166960K 91 0 ifaddr 35 6K 7K 166960K 62 0 ifgroup 47 2K 2K 166960K 96 0 sysctl 3 1K 9K 166960K 9 0 counters 66 36K 37K 166960K 106 0 ioctlops 0 0K 4K 166960K 1694 0 iov 0 0K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1323 83K 84K 166960K 1604 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 14 20K 20K 166960K 24 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 381 0 sigio 0 0K 0K 166960K 5 0 proc 77 131K 180K 166960K 579 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 37 0 in_multi 77 5K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 1 0 mrt 2 0K 0K 166960K 11 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 402 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 241 159K 177K 166960K 5236 0 UVM aobj 11 2K 2K 166960K 11 0 pinsyscall 41 82K 106K 166960K 1547 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 10 0K 2K 166960K 42 0 temp 44 9115K 12970K 166960K 13917 0 kqueue 13 20K 32K 166960K 81 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 50 0 47 1 0 1 1 0 8 0 rtentry 176 114 0 35 6 0 6 6 0 8 0 unpcb 144 166 0 148 1 0 1 1 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 55 0 49 1 0 1 1 0 8 0 arp 136 18 0 4 1 0 1 1 0 8 0 inpcb 328 300 0 287 4 0 4 4 0 8 2 nd6 152 25 0 7 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 12 0 12 1 0 1 1 0 8 1 pfstscr 40 4 0 2 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 5 0 3 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 7 0 7 1 1 0 1 0 8 0 pfanchor 1288 1 0 1 1 1 0 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 36 0 3 1 0 1 1 0 8 0 pfstkey 128 36 0 3 2 0 2 2 0 8 0 pfstate 448 34 0 2 4 0 4 4 0 8 0 pfrule 1360 25 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 492 0 135 29 0 29 29 0 8 3 art_table 40 493 0 135 5 0 5 5 0 8 0 art_node 32 114 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 72 18 0 6 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2005 0 544 93 0 93 93 0 8 0 ffsino 296 2005 0 544 114 0 114 114 0 8 0 nchpl 144 2532 0 830 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2263 0 0 126 0 126 126 0 8 0 namei 1024 8036 0 8034 2 1 1 2 0 8 0 percpumem 16 68 0 20 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 kstatmem 264 55 0 32 3 0 3 3 0 8 1 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 11071 0 11069 11 3 8 8 1 8 7 plimitpl 152 60 0 42 1 0 1 1 0 8 0 sigapl 424 720 0 654 8 0 8 8 0 8 0 knotepl 120 493 0 0 15 0 15 15 0 8 0 kqueuepl 224 171 0 161 5 0 5 5 0 8 4 pipepl 344 146 0 119 3 0 3 3 0 8 0 fdescpl 528 684 0 654 3 0 3 3 0 8 0 filepl 160 3244 0 3014 13 0 13 13 0 8 3 lockfpl 104 125 0 122 1 0 1 1 0 8 0 lockfspl 48 61 0 58 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 48 0 31 1 0 1 1 0 8 0 ucredpl 104 413 0 400 1 0 1 1 0 8 0 zombiepl 144 655 0 654 1 0 1 1 0 8 0 processpl 1232 720 0 654 6 0 6 6 0 8 0 procpl 664 1117 0 1039 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 529 0 495 8 0 8 8 0 8 4 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 131 0 0 9 0 9 9 0 8 0 bufpl 280 3921 0 106 273 0 273 273 0 8 0 anonpl 32 9730 0 0 79 0 79 79 0 246 0 amapchunkpl 152 15990 0 15486 29 0 29 29 0 158 7 amappl16 200 2889 0 2860 27 11 16 22 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 437 0 436 1 0 1 1 0 8 0 amappl13 176 129 0 117 1 0 1 1 0 8 0 amappl12 168 936 0 906 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 67 0 53 1 0 1 1 0 8 0 amappl9 144 300 0 300 1 1 0 1 0 8 0 amappl8 136 100 0 98 1 0 1 1 0 8 0 amappl7 128 175 0 162 1 0 1 1 0 8 0 amappl6 120 158 0 156 1 0 1 1 0 8 0 amappl5 112 101 0 91 1 0 1 1 0 8 0 amappl4 104 296 0 278 1 0 1 1 0 8 0 amappl3 96 3128 0 3011 4 0 4 4 0 8 0 amappl2 88 573 0 513 2 0 2 2 0 8 0 amappl1 80 11991 0 11395 16 0 16 16 0 8 1 amappl 88 4450 0 4280 5 0 5 5 0 92 0 uvmvnodes 80 109 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 7 0 7 2 1 1 1 0 8 1 dma128 128 254 0 254 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 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 684 0 654 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 684 0 654 1 0 1 1 0 8 0 vmmpekpl 168 7591 0 7555 2 0 2 2 0 8 0 vmmpepl 168 53620 0 51733 111 2 109 111 0 357 15 vmsppl 488 683 0 654 5 0 5 5 0 8 1 rwobjpl 80 18625 0 17561 32 2 30 32 0 8 3 pdppl 4096 1375 0 1308 103 32 71 87 0 8 4 pvpl 32 16271 0 0 133 1 132 133 0 265 0 pmappl 256 683 0 654 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 277 0 37 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83900ff0) 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(ffffffff83b28c80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b28c80) 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(ffffffff83b28c80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b28c80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80003c3e3400,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x75c17ae3cd70, count: 5 ddb{0}> trace x86_ipi_db(ffffffff83900ff0) 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(ffffffff83b28c80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b28c80) 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(ffffffff83b28c80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b28c80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80003c3e3400,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x75c17ae3cd70, count: -10 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0xc8f64f592e0, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xc8f64f592e0, count: -1