uvm_fault(0xfffff3006c6b6018, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81358e58 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff8000377c3af0 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81358e58 Starting stack trace... panic(ffffffff834ed3e8) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff8000377c3a40) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff8000ffff2a78,fffff3000ccff720,ffff8000377c3c00) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690 sys_futimens(ffff8000ffff2a78,ffff8000377c3d50,ffff8000377c3ca0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2766 syscall(ffff8000377c3d50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000377c3d50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbf287f6bb90, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 83 -1167871072 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *148388 51331 0 0 0 1 syz-executor 336977 68453 0 0 0x1 0 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x7a6acabd5640, 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(0xfffff3006c6b6018, 0x98, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7a6acabd5640, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800030f99200 rbx 0 rdx 0 rcx 0xffff8000ffff22b0 rax 0x3c r8 0xffff800030f99130 r9 0x1 r10 0x92fd9ba450cdddcc r11 0xd26ddc2030cfc71d r12 0 r13 0 r14 0xffff8000ffff22b0 r15 0 rip 0xffffffff8341d3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff800030f99180 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=148388 pid=51331 tcnt=2 stat=onproc flags process=0 proc=0 runpri=81, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff3a08,0xffff8000ffff2d20 process=0xffff800038bb66a0 user=0xffff800030f94000, vmspace=0xfffff3006c6b6018 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74385 498687 90042 0 2 0 syz-executor *51331 148388 36655 0 7 0 syz-executor 51331 120123 36655 0 3 0x4000000 sbar syz-executor 69835 411997 90266 0 2 0 syz-executor 69835 468683 90266 0 3 0x4000080 fsleep syz-executor 4741 114356 4120 0 2 0x1 syz-executor 4741 474666 4120 0 3 0x4000080 fsleep syz-executor 4741 112912 4120 0 3 0x4000080 fsleep syz-executor 33713 425469 62510 0 2 0 syz-executor 33713 453821 62510 0 3 0x4000080 pipewr syz-executor 68453 336977 14452 0 7 0x1 syz-executor 68453 325538 14452 0 3 0x4000080 fsleep syz-executor 27205 311313 24509 0 2 0 syz-executor 27205 128527 24509 0 3 0x4000080 fsleep syz-executor 27205 156229 24509 0 2 0x4000000 syz-executor 27205 153056 24509 0 2 0x4000000 syz-executor 99565 474605 64989 0 2 0 syz-executor 99565 287205 64989 0 3 0x4000080 fsleep syz-executor 99565 109678 64989 0 3 0x4000080 fsleep syz-executor 56779 403034 1 0 3 0x100083 ttyin getty 4120 169674 3727 0 2 0xc82 syz-executor 62510 351537 3727 0 3 0x82 nanoslp syz-executor 36655 500813 3727 0 2 0x2 syz-executor 24509 368134 3727 0 3 0x82 nanoslp syz-executor 90042 87747 3727 0 2 0xc82 syz-executor 90266 310482 3727 0 3 0x82 nanoslp syz-executor 64989 329423 3727 0 2 0xc82 syz-executor 14452 470696 3727 0 2 0xc82 syz-executor 3727 218745 7556 0 3 0x82 kqread syz-executor 7556 483350 63640 0 3 0x10008a sigsusp ksh 63640 218035 18857 0 3 0x98 kqread sshd-session 18857 319446 75347 0 3 0x92 kqread sshd-session 75347 142501 1 0 3 0x88 kqread sshd 25623 411038 28524 74 3 0x1100092 bpf pflogd 28524 436152 1 0 3 0x80 sbwait pflogd 39607 365179 26211 73 3 0x1100090 kqread syslogd 26211 511296 1 0 3 0x100082 sbwait syslogd 45114 432298 1 0 3 0x100080 kqread resolvd 93549 199045 87379 77 3 0x100092 kqread dhcpleased 14027 242975 87379 77 3 0x100092 kqread dhcpleased 87379 359327 1 0 3 0x80 kqread dhcpleased 7653 331115 0 0 2 0x40014200 smr 8117 413144 0 0 2 0x14200 zerothread 99527 385961 0 0 3 0x14200 aiodoned aiodoned 31782 441666 0 0 3 0x14200 syncer update 23172 10664 0 0 3 0x14200 cleaner cleaner 31097 500859 0 0 3 0x14200 reaper reaper 82237 125512 0 0 3 0x14200 pgdaemon pagedaemon 76485 282026 0 0 3 0x14200 bored viomb 73157 458961 0 0 3 0x40014200 acpi0 acpi0 14278 498618 0 0 3 0x40014200 idle1 33358 67460 0 0 3 0x14200 bored softnet1 89047 418227 0 0 3 0x14200 netlock softnet0 69113 480373 0 0 2 0x40014200 systqmp 86287 445007 0 0 3 0x14200 bored systq 72624 387678 0 0 3 0x14200 tmoslp softclockmp 52440 51391 0 0 3 0x40014200 tmoslp softclock 86176 180788 0 0 3 0x40014200 idle0 1 203497 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 51331 (syz-executor) thread 0xffff8000ffff2a78 (120123) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11124 12361K 12488K 166960K 13146 0 pcb 24 15K 16K 166960K 258 0 rtable 217 8K 9K 166960K 479 0 pf 40 18K 82K 166960K 182 0 ifaddr 42 7K 8K 166960K 83 0 ifgroup 63 2K 2K 166960K 133 0 sysctl 4 1K 9K 166960K 12 0 counters 74 37K 38K 166960K 140 0 ioctlops 0 0K 4K 166960K 1889 0 iov 0 0K 16K 166960K 61 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1351 85K 85K 166960K 2141 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 24K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 153 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 226K 166960K 868 0 sigio 1 0K 0K 166960K 9 0 proc 73 115K 180K 166960K 666 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 66 0 in_multi 89 6K 7K 166960K 144 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 29 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 474 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 228 159K 173K 166960K 9508 0 UVM aobj 24 2K 2K 166960K 25 0 pinsyscall 43 86K 102K 166960K 2063 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 26 0 NDP 14 0K 2K 166960K 55 0 temp 81 9124K 9192K 166960K 46950 0 kqueue 14 22K 30K 166960K 130 0 SYN cache 2 16K 24K 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 75 0 72 1 0 1 1 0 8 0 rtentry 176 140 0 51 6 1 5 6 0 8 0 unpcb 144 703 0 686 7 6 1 6 0 8 0 syncache 336 9 0 9 3 2 1 1 0 8 1 tcpcb 736 252 0 248 7 6 1 7 0 8 0 arp 136 21 0 5 1 0 1 1 0 8 0 inpcb 328 947 0 931 12 10 2 7 0 8 0 nd6 152 30 0 7 2 1 1 2 0 8 0 pkpcb 40 9 0 9 4 3 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 24 0 24 3 2 1 1 0 8 1 pppxif 1576 4 0 4 2 1 1 1 0 8 1 pfstscr 40 20 0 12 1 0 1 1 0 8 0 pffrag 232 10 0 4 1 0 1 1 0 482 0 pffrnode 88 7 0 2 1 0 1 1 0 8 0 pffrent 40 15 0 9 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 pfsrclim 320 2 0 2 2 2 0 1 0 8 0 pfstlim 224 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 10 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 101 0 28 1 0 1 1 0 8 0 pfstkey 128 103 0 28 3 0 3 3 0 8 0 pfstate 448 93 0 26 8 0 8 8 0 8 0 pfrule 1360 31 0 26 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 664 0 278 32 5 27 30 0 8 1 art_table 40 666 0 278 5 0 5 5 0 8 0 art_node 32 138 0 58 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 4 1 0 1 1 0 8 0 semapl 72 149 0 139 1 0 1 1 0 8 0 shmpl 112 22 0 1 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2884 0 1422 93 0 93 93 0 8 0 ffsino 296 2884 0 1422 114 0 114 114 0 8 0 nchpl 144 4145 0 2439 64 0 64 64 0 8 0 vnodes 216 3497 0 0 195 0 195 195 0 8 0 namei 1024 14757 0 14757 7 6 1 3 0 8 1 percpumem 16 85 0 33 1 0 1 1 0 8 0 kstatmem 264 79 0 46 4 1 3 3 0 8 0 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 13421 0 13420 10 9 1 8 1 8 0 plimitpl 152 143 0 126 1 0 1 1 0 8 0 sigapl 424 1172 0 1124 6 0 6 6 0 8 0 knotepl 120 859 0 0 27 0 27 27 0 8 0 kqueuepl 224 377 0 367 7 4 3 5 0 8 2 pipepl 344 202 0 174 3 0 3 3 0 8 0 fdescpl 528 1156 0 1124 3 0 3 3 0 8 0 filepl 160 7630 0 7400 21 7 14 16 0 8 4 lockfpl 104 862 0 854 2 1 1 2 0 8 0 lockfspl 48 207 0 199 1 0 1 1 0 8 0 sessionpl 144 82 0 73 1 0 1 1 0 8 0 pgrppl 48 101 0 84 1 0 1 1 0 8 0 ucredpl 104 1102 0 1089 1 0 1 1 0 8 0 zombiepl 144 1383 0 1383 1 0 1 1 0 8 1 processpl 1232 1172 0 1124 5 1 4 5 0 8 0 procpl 664 2381 0 2322 6 0 6 6 0 8 0 sosppl 176 5 0 5 3 2 1 1 0 8 1 sockpl 752 1757 0 1721 23 18 5 17 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 265 0 0 17 0 17 17 0 8 0 bufpl 280 4268 0 110 297 0 297 297 0 8 0 anonpl 32 5847 0 0 48 0 48 48 0 246 0 amapchunkpl 152 30706 0 30255 43 18 25 28 0 158 5 amappl16 200 1900 0 1848 5 2 3 4 0 8 0 amappl15 192 38 0 38 1 1 0 1 0 8 0 amappl14 184 451 0 450 1 0 1 1 0 8 0 amappl13 176 135 0 123 1 0 1 1 0 8 0 amappl12 168 1458 0 1427 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 277 0 276 2 1 1 1 0 8 0 amappl8 136 103 0 101 1 0 1 1 0 8 0 amappl7 128 154 0 140 1 0 1 1 0 8 0 amappl6 120 164 0 162 1 0 1 1 0 8 0 amappl5 112 97 0 87 1 0 1 1 0 8 0 amappl4 104 301 0 282 1 0 1 1 0 8 0 amappl3 96 6454 0 6346 4 0 4 4 0 8 0 amappl2 88 588 0 526 2 0 2 2 0 8 0 amappl1 80 13585 0 12979 14 1 13 14 0 8 0 amappl 88 8622 0 8468 5 0 5 5 0 92 0 uvmvnodes 80 128 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 1 0 1 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 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 24 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1156 0 1124 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1156 0 1124 1 0 1 1 0 8 0 vmmpekpl 168 10647 0 10600 3 0 3 3 0 8 0 vmmpepl 168 78937 0 76957 93 3 90 90 0 357 3 vmsppl 488 1155 0 1124 5 1 4 5 0 8 0 rwobjpl 80 22659 0 21564 24 0 24 24 0 8 0 pdppl 4096 2319 0 2248 105 34 71 81 0 8 0 pvpl 32 13696 0 0 112 1 111 111 0 265 0 pmappl 256 1155 0 1124 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 307 0 57 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8399fff0) 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(ffffffff83b40c40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b40c40) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83b40c40) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b40c40) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff80003c3f73f0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83b40c40) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b40c40) at __mp_lock+0x199 sys/kern/kern_lock.c:173 ktrsyscall(ffff80002a2222a8,53,28,ffff80003c3f76a0) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a2222a8,53,28,ffff80003c3f76a0) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80003c3f76a0) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80003c3f76a0) at syscall+0x305 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80003c3f7720, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8399fff0) 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(ffffffff83b40c40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b40c40) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83b40c40) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b40c40) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff80003c3f73f0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83b40c40) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b40c40) at __mp_lock+0x199 sys/kern/kern_lock.c:173 ktrsyscall(ffff80002a2222a8,53,28,ffff80003c3f76a0) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a2222a8,53,28,ffff80003c3f76a0) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80003c3f76a0) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80003c3f76a0) at syscall+0x305 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7303ddac4400, count: -15 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7a6acabd5640, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7a6acabd5640, count: -1