uvm_fault(0xfffffd00671a3020, 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 ffff80003c425940 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(ffff80003c425890) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff8000fffee018,fffffd0060562ca8,ffff80003c425a70) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690 sys_futimes(ffff8000fffee018,ffff80003c425bc0,ffff80003c425b10) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732 syscall(ffff80003c425bc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c425bc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xee84a898a10, 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 *197671 35600 0 0 0 1 syz-executor 220425 75832 0 0x2 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x757da6b9d6a0, 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(0xfffffd00671a3020, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x757da6b9d6a0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800037f9d050 rbx 0 rdx 0 rcx 0xffff80003c406d28 rax 0x2a r8 0xffff800037f9cf80 r9 0x1 r10 0x92abbb68edd6a344 r11 0x39372f322d2b481c r12 0 r13 0xffffffff82a91028 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff822964c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800037f9cfd0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=197671 pid=35600 tcnt=3 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=0xffff80003c406030,0xffff80003c4062d8 process=0xffff80003c481368 user=0xffff800037f98000, vmspace=0xfffffd00671a3208 estcpu=36, cpticks=3, pctcpu=0.0, user=2, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2350 239387 33216 0 2 0 syz-executor 2350 153789 33216 0 3 0x4000000 sbar syz-executor 22298 37299 75832 -1 2 0xc90 syz-executor 22298 188021 75832 -1 3 0x4000090 ttyin syz-executor 22298 448804 75832 -1 3 0x4000090 fsleep syz-executor *35600 197671 44333 0 7 0 syz-executor 35600 152268 44333 0 3 0x4000080 kqsel syz-executor 35600 73903 44333 0 2 0x4000000 syz-executor 95864 268782 0 0 3 0x14280 nfsidl nfsio 61312 509089 0 0 3 0x14280 nfsidl nfsio 98570 368577 0 0 3 0x14280 nfsidl nfsio 27045 376780 0 0 3 0x14280 nfsidl nfsio 29880 137744 0 0 3 0x14280 nfsidl nfsio 28708 20874 0 0 3 0x14280 nfsidl nfsio 99261 28125 0 0 3 0x14280 nfsidl nfsio 98935 410502 0 0 3 0x14280 nfsidl nfsio 53779 388756 0 0 3 0x14280 nfsidl nfsio 60674 261084 0 0 3 0x14280 nfsidl nfsio 58501 458538 0 0 3 0x14280 nfsidl nfsio 39729 277363 0 0 3 0x14280 nfsidl nfsio 68861 288841 0 0 3 0x14280 nfsidl nfsio 9399 65657 0 0 3 0x14280 nfsidl nfsio 22449 140786 0 0 3 0x14280 nfsidl nfsio 21929 449047 0 0 3 0x14280 nfsidl nfsio 43469 344183 0 0 3 0x14280 nfsidl nfsio 31061 316557 0 0 3 0x14280 nfsidl nfsio 41332 288518 0 0 3 0x14280 nfsidl nfsio 98285 363232 0 0 3 0x14280 nfsidl nfsio 93280 305684 82389 0 2 0 syz-executor 93280 330558 82389 0 3 0x4000080 fsleep syz-executor 90373 212263 10313 0 2 0x81000 syz-executor 90373 385279 10313 0 3 0x4003000 suspend syz-executor 23551 54628 65365 0 2 0 syz-executor 23551 213842 65365 0 3 0x4000080 fsleep syz-executor 23551 43526 65365 0 3 0x4000080 fsleep syz-executor 23551 384652 65365 0 3 0x4000080 fsleep syz-executor 75832 220425 30123 0 7 0x2 syz-executor 24896 460782 30123 0 2 0xc82 syz-executor 10313 366886 30123 0 2 0xc82 syz-executor 33216 252293 30123 0 2 0xc82 syz-executor 65365 34400 30123 0 2 0xc82 syz-executor 44333 507011 30123 0 2 0xc82 syz-executor 99338 386062 30123 0 2 0x2 syz-executor 82389 120713 30123 0 2 0xc82 syz-executor 30123 416614 29709 0 3 0x82 kqread syz-executor 29709 67281 15539 0 3 0x10008a sigsusp ksh 15539 464211 18081 0 3 0x98 kqread sshd-session 18081 138269 69907 0 3 0x92 kqread sshd-session 49584 176019 1 0 2 0x100083 getty 69907 79174 1 0 3 0x88 kqread sshd 42353 15802 52590 74 3 0x1100092 bpf pflogd 52590 166407 1 0 3 0x80 sbwait pflogd 98775 208091 20754 73 3 0x1100090 kqread syslogd 20754 56795 1 0 3 0x100082 sbwait syslogd 75014 20051 1 0 3 0x100080 kqread resolvd 83609 147253 48232 77 3 0x100092 kqread dhcpleased 66166 130867 48232 77 3 0x100092 kqread dhcpleased 48232 429434 1 0 3 0x80 kqread dhcpleased 28469 94621 0 0 2 0x40014200 smr 46376 465736 0 0 2 0x14200 zerothread 65566 247146 0 0 3 0x14200 aiodoned aiodoned 14330 342 0 0 3 0x14200 syncer update 15393 146314 0 0 3 0x14200 cleaner cleaner 43948 279704 0 0 3 0x14200 reaper reaper 51019 295491 0 0 3 0x14200 pgdaemon pagedaemon 30729 464037 0 0 3 0x14200 bored viomb 96791 304469 0 0 3 0x40014200 acpi0 acpi0 37514 399735 0 0 3 0x40014200 idle1 8301 488628 0 0 3 0x14200 bored softnet1 40334 314874 0 0 3 0x14200 netlock softnet0 31638 497976 0 0 3 0x14200 smrbar systqmp 11331 360416 0 0 3 0x14200 bored systq 4492 501821 0 0 3 0x14200 tmoslp softclockmp 60991 444218 0 0 3 0x40014200 tmoslp softclock 34066 169095 0 0 3 0x40014200 idle0 1 263472 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 2350 (syz-executor) thread 0xffff8000fffee018 (153789) 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 99338 (syz-executor) thread 0xffff80002a222fa0 (386062) exclusive rrwlock inode r = 0 (0xfffffd006435fea8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 #11 namei+0x7c5 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1806 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd0074ccb428) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1806 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 31638 (systqmp) thread 0xffff8000ffffe7c8 (497976) 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 11054 12091K 12278K 166960K 12388 0 pcb 18 12K 12K 166960K 40 0 rtable 234 7K 8K 166960K 396 0 pf 34 17K 25K 166960K 96 0 ifaddr 39 6K 7K 166960K 53 0 ifgroup 54 2K 2K 166960K 77 0 sysctl 3 1K 9K 166960K 7 0 counters 68 36K 37K 166960K 84 0 ioctlops 0 0K 4K 166960K 1536 0 iov 0 0K 1K 166960K 4 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1325 83K 83K 166960K 1470 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 221 0 proc 72 115K 180K 166960K 557 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 6 0 in_multi 88 6K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 393 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 175K 192K 166960K 3793 0 UVM aobj 6 2K 2K 166960K 7 0 pinsyscall 42 84K 106K 166960K 1387 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 11 0K 2K 166960K 33 0 temp 37 9110K 9119K 166960K 4140 0 kqueue 13 20K 30K 166960K 42 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 39 0 36 1 0 1 1 0 8 0 rtentry 176 119 0 18 6 0 6 6 0 8 0 unpcb 144 70 0 53 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 32 0 28 1 0 1 1 0 8 0 arp 136 19 0 3 1 0 1 1 0 8 0 inpcb 328 171 0 161 5 0 5 5 0 8 2 nd6 152 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 4 0 4 1 0 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pfstscr 40 66 0 64 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 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 5 0 3 1 0 1 1 0 8 0 pfstitem 24 91 0 64 1 0 1 1 0 8 0 pfstkey 128 91 0 64 2 0 2 2 0 8 0 pfstate 448 58 0 32 7 0 7 7 0 8 2 pfrule 1360 23 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 476 0 61 30 0 30 30 0 8 2 art_table 40 478 0 61 5 0 5 5 0 8 0 art_node 32 119 0 27 1 0 1 1 0 8 0 sysvmsgpl 40 65 0 65 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 2 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1725 0 258 93 0 93 93 0 8 0 ffsino 296 1725 0 258 114 0 114 114 0 8 0 nchpl 144 2027 0 326 64 0 64 64 0 8 0 vnodes 216 1888 0 0 105 0 105 105 0 8 0 namei 1024 6267 0 6267 2 0 2 2 0 8 2 percpumem 16 57 0 8 1 0 1 1 0 8 0 kstatmem 264 37 0 12 2 0 2 2 0 8 0 scxspl 216 7093 0 7093 3 1 2 3 1 8 2 plimitpl 152 69 0 50 1 0 1 1 0 8 0 sigapl 424 560 0 493 8 0 8 8 0 8 0 knotepl 120 309 0 0 10 0 10 10 0 8 0 kqueuepl 224 49 0 38 2 0 2 2 0 8 1 pipepl 344 131 0 104 3 0 3 3 0 8 0 fdescpl 528 524 0 493 3 0 3 3 0 8 0 filepl 160 2105 0 1885 13 0 13 13 0 8 1 lockfpl 104 112 0 109 2 0 2 2 0 8 1 lockfspl 48 51 0 48 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 40 0 23 1 0 1 1 0 8 0 ucredpl 104 175 0 160 1 0 1 1 0 8 0 zombiepl 144 495 0 493 1 0 1 1 0 8 0 processpl 1232 560 0 493 6 0 6 6 0 8 0 procpl 664 714 0 637 7 0 7 7 0 8 0 sosppl 176 2 0 0 1 0 1 1 0 8 0 sockpl 752 282 0 252 8 0 8 8 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 109 0 0 14 0 14 14 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 168 0 0 10 0 10 10 0 8 0 bufpl 272 2551 0 105 164 0 164 164 0 8 0 anonpl 32 6079 0 0 49 0 49 49 0 246 0 amapchunkpl 152 11009 0 10503 27 0 27 27 0 158 6 amappl16 200 1893 0 1866 5 0 5 5 0 8 2 amappl15 192 19 0 19 1 0 1 1 0 8 1 amappl14 184 431 0 430 1 0 1 1 0 8 0 amappl13 176 124 0 112 1 0 1 1 0 8 0 amappl12 168 776 0 746 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 81 0 67 1 0 1 1 0 8 0 amappl9 144 280 0 280 1 0 1 1 0 8 1 amappl8 136 101 0 99 1 0 1 1 0 8 0 amappl7 128 151 0 138 1 0 1 1 0 8 0 amappl6 120 155 0 152 1 0 1 1 0 8 0 amappl5 112 101 0 90 1 0 1 1 0 8 0 amappl4 104 297 0 277 1 0 1 1 0 8 0 amappl3 96 2001 0 1883 4 0 4 4 0 8 0 amappl2 88 556 0 495 2 0 2 2 0 8 0 amappl1 80 11264 0 10665 16 0 16 16 0 8 0 amappl 88 3042 0 2872 5 0 5 5 0 92 1 uvmvnodes 80 100 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 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 524 0 493 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 524 0 493 1 0 1 1 0 8 0 vmmpekpl 168 6506 0 6471 2 0 2 2 0 8 0 vmmpepl 168 43285 0 41372 97 0 97 97 0 357 2 vmsppl 488 523 0 493 5 0 5 5 0 8 0 rwobjpl 80 15931 0 14893 25 0 25 25 0 8 0 pdppl 4096 1055 0 986 97 20 77 85 0 8 8 pvpl 32 12914 0 0 105 0 105 105 0 265 0 pmappl 256 523 0 493 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 439 0 23 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 syscall(ffff80002a37a220) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a37a220) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b180d3b3de0, count: 9 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 syscall(ffff80002a37a220) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a37a220) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b180d3b3de0, count: -6 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: 0x757da6b9d6a0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x757da6b9d6a0, count: -1