ppanic: kernel diagnostic assertion "((flags & PGO_LOCKED) != 0 && rw_lock_held(uobj->vmobjlock)) || (flags & PGO_LOCKED) == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_vnode.c", line 953 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *331052 58580 32767 0x10 0 1 syz-executor.3 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff828423bc,3b9,ffffffff8277e8cf) at __assert+0x29 sys/kern/subr_prf.c:157 uvn_get(fffffd806da68920,36000,ffff80002e41dbd0,ffff80002e41da44,3,4,6bc87334c9a44ec9,fffffd806da68920) at uvn_get+0x4b6 sys/uvm/uvm_vnode.c:952 uvm_fault_lower_lookup(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0) at uvm_fault_lower_lookup+0xf7 sys/uvm/uvm_fault.c:1128 uvm_fault_lower(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd806c89e1e8,90980353000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002e41ddd0,909803534a0) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002e41ddd0) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x778d205d2e80, count: 5 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}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu0: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 cpu1: kernel diagnostic assertion "((flags & PGO_LOCKED) != 0 && rw_lock_held(uobj->vmobjlock)) || (flags & PGO_LOCKED) == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_vnode.c", line 953 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff828423bc,3b9,ffffffff8277e8cf) at __assert+0x29 sys/kern/subr_prf.c:157 uvn_get(fffffd806da68920,36000,ffff80002e41dbd0,ffff80002e41da44,3,4,6bc87334c9a44ec9,fffffd806da68920) at uvn_get+0x4b6 sys/uvm/uvm_vnode.c:952 uvm_fault_lower_lookup(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0) at uvm_fault_lower_lookup+0xf7 sys/uvm/uvm_fault.c:1128 uvm_fault_lower(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd806c89e1e8,90980353000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002e41ddd0,909803534a0) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002e41ddd0) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x778d205d2e80, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e41d870 rbx 0xffff800020d59b9f rdx 0 rcx 0xffff800022efda90 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xcecbb0d289bac55 r11 0x17c03ee3aa61506e r12 0xffff800020d599a0 r13 0 r14 0xffffffff82bfd9a0 cpu_info_full_primary+0x29a0 r15 0x1 rip 0xffffffff8138849c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e41d860 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=331052 stat=onproc flags process=10 proc=0 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800022efd298,0xffff800022efd550 process=0xffff80002615f688 user=0xffff80002e418000, vmspace=0xfffffd806c89e1e8 estcpu=31, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48509 119050 79160 32767 2 0x10 syz-executor.1 5119 179374 68911 32767 2 0x10 syz-executor.6 5119 487670 68911 32767 2 0x4000010 syz-executor.6 5119 117813 68911 32767 2 0x4000010 syz-executor.6 19713 428283 78140 32767 2 0x10 syz-executor.7 19713 216774 78140 32767 2 0x4000010 syz-executor.7 91624 320685 81400 32767 2 0x10 syz-executor.4 9636 107929 83682 32767 2 0x10 syz-executor.0 *58580 331052 35174 32767 7 0x10 syz-executor.3 59764 385436 12171 32767 2 0x10 syz-executor.5 59764 24588 12171 32767 3 0x4000090 fsleep syz-executor.5 59764 482669 12171 32767 2 0x4000010 syz-executor.5 29770 395805 77737 32767 3 0x90 nanoslp syz-executor.2 77737 134274 99600 0 3 0x82 wait syz-executor.2 79160 514182 59722 32767 3 0x90 nanoslp syz-executor.1 59722 462 99600 0 3 0x82 wait syz-executor.1 12171 236002 69681 32767 3 0x90 nanoslp syz-executor.5 69681 282672 99600 0 3 0x82 wait syz-executor.5 83682 194436 90098 32767 3 0x90 nanoslp syz-executor.0 90098 228061 99600 0 3 0x82 wait syz-executor.0 78140 236449 1 32767 2 0x10 syz-executor.7 68911 74276 82145 32767 2 0x10 syz-executor.6 82145 60158 99600 0 3 0x82 wait syz-executor.6 81400 160567 33995 32767 2 0x10 syz-executor.4 33995 502172 99600 0 3 0x82 wait syz-executor.4 35174 491090 32168 32767 2 0x10 syz-executor.3 32168 145217 99600 0 3 0x82 wait syz-executor.3 70355 241946 0 0 3 0x14200 bored sosplice 99600 333106 50860 0 3 0x2000082 kqread syz-fuzzer 99600 174670 50860 0 3 0x6000082 nanoslp syz-fuzzer 99600 296817 50860 0 3 0x6000082 wait syz-fuzzer 99600 122219 50860 0 3 0x6000082 wait syz-fuzzer 99600 433765 50860 0 3 0x6000082 wait syz-fuzzer 99600 197513 50860 0 3 0x6000082 wait syz-fuzzer 99600 486390 50860 0 3 0x6000082 thrsleep syz-fuzzer 99600 324417 50860 0 3 0x6000082 thrsleep syz-fuzzer 99600 355785 50860 0 3 0x6000082 wait syz-fuzzer 99600 402799 50860 0 3 0x6000082 wait syz-fuzzer 99600 397381 50860 0 3 0x6000082 thrsleep syz-fuzzer 99600 82693 50860 0 3 0x6000082 thrsleep syz-fuzzer 99600 357747 50860 0 3 0x6000082 thrsleep syz-fuzzer 99600 73751 50860 0 3 0x6000082 thrsleep syz-fuzzer 99600 98302 50860 0 3 0x6000082 thrsleep syz-fuzzer 99600 320260 50860 0 3 0x6000082 wait syz-fuzzer 50860 257318 40342 0 3 0x10008a sigsusp ksh 40342 23672 49977 0 2 0x12 sshd 71128 97973 1 0 3 0x100083 ttyin getty 49977 23167 1 0 3 0x88 kqread sshd 2501 351083 21661 73 3 0x1100090 kqread syslogd 21661 248094 1 0 3 0x100082 netio syslogd 80259 109642 1 0 3 0x100080 kqread resolvd 45841 437281 79675 77 3 0x100092 kqread dhcpleased 79014 73717 79675 77 3 0x100092 kqread dhcpleased 79675 69924 1 0 3 0x80 kqread dhcpleased 4686 270488 0 0 3 0x14200 bored smr 91284 385948 0 0 2 0x14200 zerothread 69441 263317 0 0 3 0x14200 aiodoned aiodoned 49420 97104 0 0 3 0x14200 syncer update 54383 458619 0 0 3 0x14200 cleaner cleaner 34515 292674 0 0 3 0x14200 reaper reaper 7594 469318 0 0 3 0x14200 pgdaemon pagedaemon 94263 474778 0 0 3 0x14200 bored viomb 3161 105425 0 0 3 0x40014200 acpi0 acpi0 92265 389585 0 0 3 0x40014200 idle1 65707 452045 0 0 3 0x14200 bored softnet3 23173 82617 0 0 3 0x14200 bored softnet2 35038 3078 0 0 3 0x14200 bored softnet1 9127 280933 0 0 3 0x14200 bored softnet0 53192 33626 0 0 3 0x14200 bored systqmp 54941 46964 0 0 3 0x14200 bored systq 30488 149868 0 0 3 0x40014200 bored softclock 14556 359025 0 0 3 0x40014200 idle0 1 347847 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d4ae50) #0 witness_lock+0x447 #1 sleep_finish+0x142 sys/kern/kern_synch.c:398 #2 msleep+0xea sys/kern/kern_synch.c:249 #3 reaper+0xdb sys/kern/kern_exit.c:437 #4 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10203 6411K 6420K 78643K 11441 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 2638 0 pf 29 8K 8K 78643K 135 0 ifaddr 44 16K 16K 78643K 264 0 ifgroup 50 2K 2K 78643K 262 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 166 0 ioctlops 0 0K 2K 78643K 294 0 iov 0 0K 19K 78643K 2174 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 7568 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 311 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2252 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 125K 78643K 23366 0 sigio 0 0K 0K 78643K 1545 0 proc 56 78K 127K 78643K 2931 0 subproc 104 6K 6K 78643K 793 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 10682 0 in_multi 99 7K 7K 78643K 830 0 ether_multi 1 0K 0K 78643K 18 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 157 705K 705K 78643K 157 0 exec 0 0K 1K 78643K 4065 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 484 95K 110K 78643K 230151 0 UVM aobj 131 5K 5K 78643K 154 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 440 0 NDP 13 0K 2K 78643K 186 0 temp 74 5920K 6048K 78643K 59649 0 kqueue 12 18K 32K 78643K 1311 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 821 0 818 5 4 1 2 0 8 0 rtentry 112 722 0 609 4 0 4 4 0 8 0 unpcb 144 13699 0 13686 119 113 6 8 0 8 5 syncache 304 181 0 181 37 36 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 180 0 180 29 28 1 1 0 8 1 tcpcb 808 6524 0 6512 229 224 5 16 0 8 2 arp 120 128 0 109 1 0 1 1 0 8 0 ipq 40 38 0 37 15 14 1 1 0 8 0 ipqe 40 230 0 229 15 14 1 1 0 8 0 inpcb 368 13041 0 13021 278 272 6 15 0 8 3 nd6 136 207 0 181 2 0 2 2 0 8 0 kcovpl 48 61 0 53 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2908 0 2439 35 5 30 31 0 8 0 art_table 32 2909 0 2439 4 0 4 4 0 8 0 art_node 16 721 0 618 1 0 1 1 0 8 0 sysvmsgpl 40 65 0 25 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 2248 0 2238 1 0 1 1 0 8 0 shmpl 112 151 0 23 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 37339 0 35888 92 0 92 92 0 8 0 ffsino 272 37339 0 35888 98 0 98 98 0 8 0 nchpl 144 69333 0 67694 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 233601 0 233601 10 9 1 2 0 8 1 percpumem 16 96 0 53 1 0 1 1 0 8 0 kstatmem 264 128 0 106 2 0 2 2 0 8 0 scxspl 216 217283 0 217283 69 68 1 8 1 8 1 plimitpl 152 2361 0 2339 20 19 1 2 0 8 0 sigapl 424 23553 0 23499 7 0 7 7 0 8 0 futexpl 64 211918 0 211917 11 10 1 1 0 8 0 knotepl 120 1426 0 0 18 3 15 17 0 8 0 kqueuepl 216 3861 0 3853 75 72 3 6 0 8 2 pipepl 320 5531 0 5503 107 104 3 9 0 8 0 fdescpl 496 23535 0 23499 7 2 5 6 0 8 0 filepl 152 150924 0 150691 238 221 17 21 0 8 7 lockfpl 104 4422 0 4420 6 5 1 2 0 8 0 lockfspl 48 1350 0 1348 1 0 1 1 0 8 0 sessionpl 144 76 0 60 1 0 1 1 0 8 0 pgrppl 48 392 0 376 1 0 1 1 0 8 0 ucredpl 104 31584 0 31566 1 0 1 1 0 8 0 zombiepl 144 23500 0 23499 1 0 1 1 0 8 0 processpl 1072 23553 0 23499 5 1 4 5 0 8 0 procpl 680 64792 0 64718 45 38 7 9 0 8 0 sosppl 168 271 0 271 28 27 1 1 0 8 1 sockpl 488 28512 0 28480 590 576 14 36 0 8 8 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 42 0 0 3 0 3 3 0 8 0 mcl12k 12288 58 0 0 2 0 2 2 0 8 0 mcl9k 9216 30 0 0 2 0 2 2 0 8 0 mcl8k 8192 41 0 0 4 1 3 3 0 8 0 mcl4k 4096 82 0 0 5 0 5 5 0 8 0 mcl2k2 2112 23 0 0 2 0 2 2 0 8 0 mcl2k 2048 518 0 0 32 20 12 32 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 2106 0 0 108 0 108 108 0 8 0 bufpl 288 44255 0 37932 452 0 452 452 0 8 0 anonpl 24 2308513 0 2298764 280 185 95 117 0 186 0 amapchunkpl 152 733623 0 732817 229 192 37 56 0 158 1 amappl16 200 44924 0 44633 271 254 17 41 0 8 0 amappl15 192 15 0 14 1 0 1 1 0 8 0 amappl14 184 324 0 306 2 1 1 2 0 8 0 amappl13 176 12 0 11 1 0 1 1 0 8 0 amappl12 168 24983 0 24947 2 0 2 2 0 8 0 amappl11 160 56 0 46 1 0 1 1 0 8 0 amappl10 152 121 0 105 1 0 1 1 0 8 0 amappl9 144 741 0 740 1 0 1 1 0 8 0 amappl8 136 1584 0 1331 10 1 9 9 0 8 0 amappl7 128 366 0 351 2 0 2 2 0 8 0 amappl6 120 944 0 919 2 1 1 2 0 8 0 amappl5 112 1921 0 1913 1 0 1 1 0 8 0 amappl4 104 1715 0 1658 3 1 2 3 0 8 0 amappl3 96 142762 0 142678 19 16 3 4 0 8 0 amappl2 88 25618 0 25536 3 1 2 3 0 8 0 amappl1 80 92049 0 91514 23 10 13 22 0 8 0 amappl 88 228263 0 228023 7 0 7 7 0 92 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 72 153 0 23 3 0 3 3 0 8 0 uaddrrnd 24 23535 0 23499 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 23535 0 23499 1 0 1 1 0 8 0 vmmpekpl 168 179958 0 179884 4 0 4 4 0 8 0 vmmpepl 168 1394487 0 1391874 400 267 133 148 0 357 6 vmsppl 464 23534 0 23499 7 2 5 6 0 8 0 rwobjpl 56 337816 0 330241 120 9 111 111 0 8 0 pdppl 4096 47078 0 46998 875 795 80 96 0 8 0 pvpl 32 6781831 0 6765653 693 517 176 354 0 265 0 pmappl 248 23534 0 23499 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2276 0 1366 27 0 27 27 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bfcff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x35 sys/dev/kcov.c:164 __mp_lock(ffffffff82d48c68) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000212be9a0,ffff80000027b500) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(70) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8281fc02) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff8279cfd2) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 end trace frame: 0xffff8000212bee00, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82bfcff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x35 sys/dev/kcov.c:164 __mp_lock(ffffffff82d48c68) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000212be9a0,ffff80000027b500) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(70) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8281fc02) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff8279cfd2) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(9e097bc3) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f1de870) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f1de870) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000211f42c0,fffffd806f1de870,fffffd806f1de8f8,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000211f42c0,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000211f42c0) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000211f42c0,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000211f42c0,ffff8000212bf0b0,ffff8000212bf100) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000212bf180) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212bf180) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aa629c4b2d0, count: -24 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff828423bc,3b9,ffffffff8277e8cf) at __assert+0x29 sys/kern/subr_prf.c:157 uvn_get(fffffd806da68920,36000,ffff80002e41dbd0,ffff80002e41da44,3,4,6bc87334c9a44ec9,fffffd806da68920) at uvn_get+0x4b6 sys/uvm/uvm_vnode.c:952 uvm_fault_lower_lookup(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0) at uvm_fault_lower_lookup+0xf7 sys/uvm/uvm_fault.c:1128 uvm_fault_lower(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd806c89e1e8,90980353000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002e41ddd0,909803534a0) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002e41ddd0) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x778d205d2e80, count: 5 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff828423bc,3b9,ffffffff8277e8cf) at __assert+0x29 sys/kern/subr_prf.c:157 uvn_get(fffffd806da68920,36000,ffff80002e41dbd0,ffff80002e41da44,3,4,6bc87334c9a44ec9,fffffd806da68920) at uvn_get+0x4b6 sys/uvm/uvm_vnode.c:952 uvm_fault_lower_lookup(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0) at uvm_fault_lower_lookup+0xf7 sys/uvm/uvm_fault.c:1128 uvm_fault_lower(ffff80002e41dc50,ffff80002e41dc88,ffff80002e41dbd0,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd806c89e1e8,90980353000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002e41ddd0,909803534a0) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002e41ddd0) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x778d205d2e80, count: -10