login: uvm_fault(0xfffffd806e851b80, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81ab3eb8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80002a2daad0 gsbase 0xffff8000299bdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81ab3eb8 Starting stack trace... panic(ffffffff83487d88) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a2daa20) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800038fd82b8,fffffd8063cdd8d0,ffff80002a2dabe0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimens(ffff800038fd82b8,ffff80002a2dad30,ffff80002a2dac80) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847 syscall(ffff80002a2dad30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2dad30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x229993a9650, 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 64063 62733 0 0 0 0 syz-executor *446413 98870 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x771ae2bf77e0, 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(0xfffffd806e851b80, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x771ae2bf77e0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a27a800 rbx 0 rdx 0 rcx 0xffff80002a242fa0 rax 0x2a r8 0xffff80002a27a730 r9 0x1 r10 0x3404b33e393c5cd3 r11 0x8d08bb6b8a332d0 r12 0 r13 0xffffffff81e65628 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff817bd4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a27a780 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=446413 pid=98870 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=0xffff800038fd8d18,0xffff800038fd9cb8 process=0xffff80003c3f61d0 user=0xffff80002a275000, vmspace=0xfffffd806e851b80 estcpu=36, cpticks=4, pctcpu=0.0, user=3, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 12770 361974 52097 0 2 0 syz-executor 62733 64063 69297 0 7 0 syz-executor 62733 84392 69297 0 2 0x4000000 syz-executor *98870 446413 42124 0 7 0 syz-executor 98870 203297 42124 0 3 0x4000088 kqpoll syz-executor 98870 369442 42124 0 3 0x4000000 sbar syz-executor 21979 169849 39152 0 3 0x2 clonelk ifconfig 39152 380201 24688 0 3 0x10008a sigsusp sh 82076 16144 30374 0 3 0x80 nanoslp syz-executor 82076 155564 30374 0 3 0x4000080 kqpoll syz-executor 82076 286687 30374 0 3 0x4000080 fsleep syz-executor 1048 407621 60511 0 3 0x3000 suspend syz-executor 1048 444166 60511 0 3 0x4081000 smrbar syz-executor 24688 55868 44494 0 3 0x82 wait syz-executor 81001 148038 90757 0 3 0x3000 suspend syz-executor 81001 179991 90757 0 3 0x4081000 biowait syz-executor 69297 260621 44494 0 3 0x82 nanoslp syz-executor 10865 159254 1 0 3 0x100083 ttyin getty 96514 360743 0 0 3 0x14200 acct acct 52097 61285 44494 0 3 0x82 nanoslp syz-executor 90757 298017 44494 0 3 0x82 nanoslp syz-executor 60511 232184 44494 0 3 0x82 nanoslp syz-executor 57965 341697 44494 0 3 0x82 nanoslp syz-executor 42124 112449 44494 0 3 0x82 nanoslp syz-executor 30374 59556 44494 0 3 0x82 nanoslp syz-executor 44494 274232 1 0 3 0x82 kqread syz-executor 55600 495767 1 74 3 0x1100092 bpf pflogd 80381 291305 1 73 3 0x1100090 kqread syslogd 50572 274558 0 0 3 0x14200 bored smr 9028 457973 0 0 2 0x14200 zerothread 4349 79594 0 0 3 0x14200 aiodoned aiodoned 53877 243651 0 0 3 0x14200 syncer update 91876 166689 0 0 3 0x14200 cleaner cleaner 59888 500064 0 0 3 0x14200 reaper reaper 29038 277353 0 0 3 0x14200 pgdaemon pagedaemon 6286 251366 0 0 3 0x14200 bored viomb 4739 98969 0 0 3 0x40014200 acpi0 acpi0 24243 255124 0 0 3 0x40014200 idle1 37874 494539 0 0 3 0x14200 bored softnet1 30565 174297 0 0 3 0x14200 netlock softnet0 96144 477451 0 0 3 0x14200 smrbar systqmp 96894 260850 0 0 3 0x14200 bored systq 30457 293625 0 0 3 0x14200 tmoslp softclockmp 59162 407198 0 0 3 0x40014200 tmoslp softclock 27946 98577 0 0 3 0x40014200 idle0 1 359069 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 98870 (syz-executor) thread 0xffff800038fd82b8 (369442) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839d2f80) #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 1048 (syz-executor) thread 0xffff80002a242d08 (444166) exclusive rwlock clonelk r = 0 (0xffffffff83952a18) #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 if_clone_destroy+0x93 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2160 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 81001 (syz-executor) thread 0xffff8000ffffc008 (179991) exclusive rrwlock inode r = 0 (0xfffffd806c6e5560) #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 vn_write+0x18f sys/kern/vfs_vnops.c:411 #6 dofilewritev+0x2bd sys/kern/sys_generic.c:384 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 96144 (systqmp) thread 0xffff8000ffffe530 (477451) shared rwlock systqmp r = 0 (0xffffffff839253f8) #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 11076 12277K 13770K 166960K 13074 0 pcb 17 15K 17K 166960K 206 0 rtable 167 7K 9K 166960K 622 0 pf 30 16K 18K 166960K 126 0 ifaddr 33 5K 7K 166960K 105 0 ifgroup 45 2K 2K 166960K 152 0 sysctl 3 1K 9K 166960K 13 0 counters 66 36K 38K 166960K 154 0 ioctlops 0 0K 4K 166960K 1862 0 iov 0 0K 16K 166960K 127 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1382 87K 87K 166960K 2155 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 24K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 26 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 240K 166960K 940 0 sigio 0 0K 0K 166960K 7 0 proc 28 50K 164K 166960K 844 0 subproc 72 4K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 370 0 in_multi 69 4K 7K 166960K 197 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 25 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 127 572K 572K 166960K 127 0 exec 0 0K 1K 166960K 549 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 150 102K 191K 166960K 10002 0 UVM aobj 10 2K 2K 166960K 10 0 pinsyscall 25 50K 106K 166960K 2298 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 33 0 NDP 10 0K 2K 166960K 72 0 temp 62 9084K 9149K 166960K 38460 0 kqueue 3 4K 30K 166960K 154 0 SYN cache 2 8K 16K 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 99 0 99 1 0 1 1 0 8 1 rtentry 176 195 0 129 6 0 6 6 0 8 0 unpcb 144 672 0 665 7 4 3 6 0 8 2 syncache 336 11 0 11 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 346 0 342 10 6 4 7 0 8 3 arp 136 34 0 21 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 3 0 3 1 0 1 1 0 8 1 inpcb 328 1094 0 1087 8 1 7 7 0 8 5 nd6 152 43 0 28 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 28 0 27 2 1 1 1 0 8 0 pppxif 1576 3 0 3 2 2 0 1 0 8 0 pffrag 232 23 0 16 1 0 1 1 0 482 0 pffrnode 88 22 0 16 1 0 1 1 0 8 0 pffrent 40 40 0 33 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 pfstitem 24 57 0 20 1 0 1 1 0 8 0 pfstkey 128 57 0 20 2 0 2 2 0 8 0 pfstate 448 57 0 20 6 0 6 6 0 8 0 pfrule 1360 21 0 16 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 256 820 0 509 30 6 24 29 0 8 1 art_table 40 822 0 509 5 0 5 5 0 8 0 art_node 32 194 0 135 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 8 1 0 1 1 0 8 0 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2968 0 1490 93 0 93 93 0 8 0 ffsino 296 2968 0 1490 114 0 114 114 0 8 0 nchpl 144 4234 0 2509 65 0 65 65 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 vnodes 216 3498 0 0 195 0 195 195 0 8 0 namei 1024 15184 0 15184 2 1 1 2 0 8 1 percpumem 16 92 0 44 1 0 1 1 0 8 0 kstatmem 264 88 0 66 3 1 2 3 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 17591 0 17590 11 9 2 8 1 8 1 plimitpl 152 176 0 163 1 0 1 1 0 8 0 sigapl 424 1241 0 1201 7 1 6 7 0 8 0 knotepl 120 312 0 0 10 0 10 10 0 8 0 kqueuepl 224 326 0 321 4 0 4 4 0 8 3 pipepl 344 199 0 171 3 0 3 3 0 8 0 fdescpl 528 1224 0 1201 3 0 3 3 0 8 0 filepl 160 7811 0 7622 18 5 13 18 0 8 3 lockfpl 104 251 0 250 1 0 1 1 0 8 0 lockfspl 48 101 0 100 1 0 1 1 0 8 0 sessionpl 144 65 0 60 1 0 1 1 0 8 0 pgrppl 48 83 0 70 1 0 1 1 0 8 0 ucredpl 104 1345 0 1336 1 0 1 1 0 8 0 zombiepl 144 1204 0 1201 1 0 1 1 0 8 0 processpl 1232 1241 0 1201 5 0 5 5 0 8 0 procpl 664 2455 0 2408 6 0 6 6 0 8 0 sosppl 176 5 0 5 2 1 1 1 0 8 1 sockpl 752 1890 0 1876 18 7 11 17 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mtagpl 96 36 0 0 1 0 1 1 0 8 0 mbufpl 256 421 0 0 27 0 27 27 0 8 0 bufpl 280 6173 0 140 431 0 431 431 0 8 0 anonpl 32 7792 0 0 64 1 63 64 0 246 0 amapchunkpl 152 38410 0 38053 39 5 34 34 0 158 14 amappl16 200 3668 0 3406 30 16 14 15 0 8 0 amappl15 192 28 0 28 1 1 0 1 0 8 0 amappl14 184 514 0 513 1 0 1 1 0 8 0 amappl13 176 178 0 174 1 0 1 1 0 8 0 amappl12 168 1511 0 1491 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 71 0 67 1 0 1 1 0 8 0 amappl9 144 268 0 268 1 1 0 1 0 8 0 amappl8 136 130 0 127 1 0 1 1 0 8 0 amappl7 128 169 0 164 1 0 1 1 0 8 0 amappl6 120 223 0 221 1 0 1 1 0 8 0 amappl5 112 113 0 110 1 0 1 1 0 8 0 amappl4 104 343 0 333 1 0 1 1 0 8 0 amappl3 96 6465 0 6389 4 0 4 4 0 8 0 amappl2 88 696 0 676 2 0 2 2 0 8 0 amappl1 80 16294 0 16105 17 1 16 16 0 8 6 amappl 88 8990 0 8869 5 0 5 5 0 92 1 uvmvnodes 80 119 0 0 3 0 3 3 0 8 0 dma8192 8192 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 128 255 0 255 3 2 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1224 0 1201 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1224 0 1201 1 0 1 1 0 8 0 vmmpekpl 168 12701 0 12650 4 1 3 3 0 8 0 vmmpepl 168 88574 0 87302 109 6 103 109 0 357 46 vmsppl 488 1223 0 1201 5 0 5 5 0 8 2 rwobjpl 80 27277 0 26489 32 2 30 32 0 8 1 pdppl 4096 2455 0 2402 123 66 57 87 0 8 4 pvpl 32 15925 0 0 130 1 129 129 0 265 0 pmappl 256 1223 0 1201 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 329 0 85 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83940ff0) 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(ffffffff839d2780) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839d2780) 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(ffffffff839d2780) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839d2780) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a2865d0,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: 0x7f0d5b829b00, count: 5 ddb{0}>