./file0./file0 v>x  uϹyC'ħ%fطphb6@p fYN#wd1%]j-HSkdtc-bг/Z񨧜'CtxN> ./file0./file0 v>x  uϹyC'ħ%fطphb6@p fYN#wd1%]j-HSkdtc-bг/Z񨧜'CtxN> ./file0./file0 v>x  uϹyC'ħ%fطphb6@p fYN#wd1%]j-HSkdtc-bг/Z񨧜'CtxN>le0!z ./file0./file0 v>x  uϹyC'ħ%fطphb6@p fYN#wd1%]j-HSkdtc-bг/Z񨧜'CtxN> uvm_fault(0xffffffff82d87728, 0x0, 0, 2) -> e kernel: page fault trap, code=2 Stopped at km_free+0x128: movq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND *395848 22205 0 0x14000 0x200 0 systqmp km_free(0,1000,ffffffff829d5d48,ffffffff829d5d60) at km_free+0x128 sys/uvm/uvm_km.c:866 pool_p_free(ffffffff82d84918,fffffd807e7b0f90) at pool_p_free+0x14b sys/kern/subr_pool.c:1012 pool_gc_pages(0) at pool_gc_pages+0x255 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82c01160) at taskq_thread+0xe5 sys/kern/kern_task.c:450 end trace frame: 0x0, count: 11 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff82d87728, 0x0, 0, 2) -> e ddb{0}> trace km_free(0,1000,ffffffff829d5d48,ffffffff829d5d60) at km_free+0x128 sys/uvm/uvm_km.c:866 pool_p_free(ffffffff82d84918,fffffd807e7b0f90) at pool_p_free+0x14b sys/kern/subr_pool.c:1012 pool_gc_pages(0) at pool_gc_pages+0x255 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82c01160) at taskq_thread+0xe5 sys/kern/kern_task.c:450 end trace frame: 0x0, count: -4 ddb{0}> show registers rdi 0x1000 __ALIGN_SIZE rsi 0x28000000 rbp 0xffff800021177570 rbx 0x28000000000 rdx 0 rcx 0xffff800021158550 rax 0 r8 0 r9 0x1 r10 0x4545790d7e589de3 r11 0x345bce24c6da2c9b r12 0 r13 0xffffffff829d5d48 kv_page r14 0x1000 __ALIGN_SIZE r15 0x1000 __ALIGN_SIZE rip 0xffffffff819e2488 km_free+0x128 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211774f0 ss 0x10 km_free+0x128: movq $0,0(%rax) ddb{0}> show proc PROC (systqmp) tid=395848 pid=22205 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000211587f8,0xffff800021158010 process=0xffff8000ffffc000 user=0xffff800021172000, vmspace=0xffffffff82d87728 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74336 416568 28386 0 3 0x82 piperd syz-executor.3 59375 215387 1 0 3 0x100083 ttyin getty 95170 260288 28386 0 3 0x82 piperd syz-executor.5 52796 416233 28386 0 3 0x82 piperd syz-executor.1 90251 62167 28386 0 3 0x82 piperd syz-executor.7 45645 126878 0 0 3 0x14200 acct acct 40748 57565 28386 0 3 0x82 wait syz-executor.2 70778 344492 28386 0 3 0x82 piperd syz-executor.4 31346 513946 28386 0 3 0x82 piperd syz-executor.6 67452 190833 0 0 3 0x14280 nfsidl nfsio 46167 395384 0 0 3 0x14280 nfsidl nfsio 33132 295687 0 0 3 0x14280 nfsidl nfsio 51194 183652 0 0 3 0x14280 nfsidl nfsio 93141 44386 0 0 3 0x14280 nfsidl nfsio 91169 286885 0 0 3 0x14280 nfsidl nfsio 27876 347006 0 0 3 0x14280 nfsidl nfsio 74532 140612 0 0 3 0x14280 nfsidl nfsio 12398 465649 0 0 3 0x14280 nfsidl nfsio 16556 334019 0 0 3 0x14280 nfsidl nfsio 44370 30883 0 0 3 0x14280 nfsidl nfsio 35898 287881 0 0 3 0x14280 nfsidl nfsio 43075 430717 0 0 3 0x14280 nfsidl nfsio 82330 304852 0 0 3 0x14280 nfsidl nfsio 77140 127994 0 0 3 0x14280 nfsidl nfsio 78296 481396 0 0 3 0x14280 nfsidl nfsio 78304 85467 0 0 3 0x14280 nfsidl nfsio 22743 499781 0 0 3 0x14280 nfsidl nfsio 97484 274342 0 0 3 0x14280 nfsidl nfsio 64454 328460 0 0 3 0x14280 nfsidl nfsio 37993 81581 0 0 3 0x14200 bored sosplice 72384 81701 28386 0 3 0x82 piperd syz-executor.0 28386 178826 98539 0 3 0x2000082 thrsleep syz-fuzzer 28386 213403 98539 0 3 0x6000082 thrsleep syz-fuzzer 28386 301239 98539 0 3 0x6000082 thrsleep syz-fuzzer 28386 491190 98539 0 3 0x6000082 wait syz-fuzzer 28386 12129 98539 0 3 0x6000082 thrsleep syz-fuzzer 28386 409881 98539 0 3 0x6000082 wait syz-fuzzer 28386 218704 98539 0 3 0x6000082 wait syz-fuzzer 28386 20361 98539 0 3 0x6000082 thrsleep syz-fuzzer 28386 95156 98539 0 3 0x6000082 wait syz-fuzzer 28386 40469 98539 0 3 0x6000082 thrsleep syz-fuzzer 28386 405981 98539 0 3 0x6000082 thrsleep syz-fuzzer 28386 283865 98539 0 3 0x6000082 kqread syz-fuzzer 28386 243552 98539 0 3 0x6000082 wait syz-fuzzer 28386 201285 98539 0 3 0x6000082 wait syz-fuzzer 28386 278282 98539 0 3 0x6000082 wait syz-fuzzer 28386 354916 98539 0 3 0x6000082 wait syz-fuzzer 98539 401629 48448 0 3 0x10008a sigsusp ksh 48448 125948 30642 0 3 0x9a kqread sshd 30642 367038 1 0 3 0x88 kqread sshd 3460 425629 91881 74 3 0x1100092 bpf pflogd 91881 417210 1 0 3 0x80 netio pflogd 43734 14617 81056 73 3 0x1100090 kqread syslogd 81056 288356 1 0 3 0x100082 netio syslogd 17736 373669 1 0 3 0x100080 kqread resolvd 70437 6473 78654 77 3 0x100092 kqread dhcpleased 34712 4958 78654 77 3 0x100092 kqread dhcpleased 78654 185248 1 0 3 0x80 kqread dhcpleased 67554 165584 0 0 3 0x14200 bored smr 48172 373112 0 0 3 0x14200 pgzero zerothread 58729 57375 0 0 3 0x14200 aiodoned aiodoned 84771 523459 0 0 3 0x14200 syncer update 93424 358022 0 0 3 0x14200 cleaner cleaner 37378 492118 0 0 3 0x14200 reaper reaper 54755 424251 0 0 3 0x14200 pgdaemon pagedaemon 61869 473667 0 0 3 0x14200 bored viomb 70350 252792 0 0 3 0x40014200 acpi0 acpi0 41461 438395 0 0 7 0x40014200 idle1 14566 403259 0 0 3 0x14200 bored softnet3 35854 309236 0 0 3 0x14200 bored softnet2 48255 321003 0 0 3 0x14200 bored softnet1 27352 163513 0 0 3 0x14200 bored softnet0 *22205 395848 0 0 7 0x14200 systqmp 20603 227501 0 0 3 0x14200 bored systq 65368 332398 0 0 3 0x14200 tmoslp softclockmp 79516 175709 0 0 3 0x40014200 tmoslp softclock 79803 194455 0 0 3 0x40014200 idle0 1 426354 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 22205 (systqmp) thread 0xffff800021158550 (395848) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 6508K 7572K 78643K 17670 0 pcb 13 16K 18K 78643K 1626 0 rtable 248 15K 15K 78643K 1643 0 pf 35 10K 10K 78643K 538 0 ifaddr 46 17K 18K 78643K 313 0 ifgroup 60 2K 2K 78643K 800 0 sysctl 3 0K 0K 78643K 5 0 counters 62 36K 36K 78643K 462 0 ioctlops 0 0K 4K 78643K 2075 0 iov 0 0K 24K 78643K 1637 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1532 96K 96K 78643K 6678 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 810 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1372 0 dirhash 12 2K 2K 78643K 57 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 74K 78643K 17444 0 sigio 0 0K 0K 78643K 338 0 proc 70 91K 115K 78643K 1884 0 subproc 104 6K 6K 78643K 425 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 783 0 in_multi 99 7K 7K 78643K 464 0 ether_multi 1 0K 0K 78643K 25 0 mrt 1 0K 0K 78643K 25 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 229 1023K 1023K 78643K 229 0 exec 0 0K 1K 78643K 2199 0 pfkey data 0 0K 0K 78643K 8 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 518 619K 624K 78643K 171743 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 506 0 NDP 13 0K 1K 78643K 267 0 temp 74 5920K 6048K 78643K 127513 0 kqueue 12 18K 26K 78643K 1110 0 SYN cache 2 824K 832K 78643K 3 0 ddb{0}> 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 1399 0 1396 28 27 1 5 0 8 0 rtentry 112 418 0 304 4 0 4 4 0 8 0 unpcb 144 12116 0 12101 131 130 1 10 0 8 0 syncache 312 197 0 197 31 31 0 1 0 8 0 tcpqe 32 975 0 975 27 27 0 1 0 8 0 tcpcb 808 12253 0 12229 198 191 7 16 0 8 1 arp 120 59 0 41 1 0 1 1 0 8 0 ipq 40 7 0 7 2 2 0 1 0 8 0 ipqe 40 21 0 21 2 2 0 1 0 8 0 inpcb 368 22092 0 22065 226 218 8 19 0 8 3 nd6 136 98 0 70 2 0 2 2 0 8 0 pkpcb 40 25 0 25 8 8 0 1 0 8 0 kcovpl 48 27 0 19 1 0 1 1 0 8 0 ppxss 1256 76 0 76 16 15 1 1 0 8 1 pffrag 232 162 0 159 5 4 1 1 0 482 0 pffrnode 88 162 0 159 5 4 1 1 0 8 0 pffrent 40 1251 0 1248 4 3 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 24 521 0 509 1 0 1 1 0 8 0 pfstkey 128 521 0 509 2 0 2 2 0 8 0 pfstate 376 521 0 509 9 5 4 6 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1400 0 915 33 2 31 32 0 8 0 art_table 32 1401 0 915 5 0 5 5 0 8 0 art_node 16 339 0 235 1 0 1 1 0 8 0 semapl 112 1364 0 1354 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 24329 0 22797 97 0 97 97 0 8 0 ffsino 272 24329 0 22797 103 0 103 103 0 8 0 nchpl 144 51546 0 51016 63 41 22 63 0 8 0 uvmvnodes 80 23992 0 0 490 0 490 490 0 8 0 vnodes 216 23992 0 0 1333 0 1333 1333 0 8 0 namei 1024 178121 0 178121 12 11 1 3 0 8 1 percpumem 16 244 0 200 1 0 1 1 0 8 0 vcpupl 2048 269 0 1 34 0 34 34 0 8 0 vmpool 696 312 0 44 25 0 25 25 0 8 0 kstatmem 264 426 0 400 2 0 2 2 0 8 0 scxspl 216 149927 0 149927 38 37 1 8 1 8 1 plimitpl 152 1761 0 1745 1 0 1 1 0 8 0 sigapl 424 17772 0 17708 10 2 8 8 0 8 0 futexpl 64 165188 0 165188 5 4 1 1 0 8 1 knotepl 120 863 0 0 11 0 11 11 0 8 0 kqueuepl 216 2972 0 2964 58 57 1 7 0 8 0 pipepl 320 3723 0 3695 111 108 3 11 0 8 0 fdescpl 496 17727 0 17703 6 1 5 5 0 8 0 filepl 152 123135 0 122895 200 189 11 25 0 8 0 lockfpl 104 4892 0 4890 9 8 1 3 0 8 0 lockfspl 48 1542 0 1540 1 0 1 1 0 8 0 sessionpl 144 55 0 38 1 0 1 1 0 8 0 pgrppl 48 354 0 337 1 0 1 1 0 8 0 ucredpl 104 12592 0 12576 1 0 1 1 0 8 0 zombiepl 144 17709 0 17708 3 2 1 1 0 8 0 processpl 1072 17772 0 17708 6 1 5 5 0 8 0 procpl 680 48138 0 48059 20 11 9 10 0 8 0 sosppl 168 219 0 219 15 15 0 1 0 8 0 sockpl 488 35657 0 35612 591 577 14 37 0 8 3 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 21 0 0 3 1 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 33 0 0 4 1 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 410 0 0 39 14 25 39 0 8 0 mtagpl 96 186 0 0 5 0 5 5 0 8 0 mbufpl 256 13824 0 0 828 0 828 828 0 8 0 bufpl 288 34292 0 27774 466 0 466 466 0 8 0 anonpl 24 1742592 0 1728201 262 147 115 163 0 186 0 amapchunkpl 152 545757 0 544958 191 143 48 67 0 158 8 amappl16 200 32847 0 32343 184 156 28 40 0 8 0 amappl15 192 17 0 17 2 2 0 1 0 8 0 amappl14 184 250 0 236 2 1 1 2 0 8 0 amappl13 176 23 0 22 2 1 1 1 0 8 0 amappl12 168 18719 0 18687 3 1 2 2 0 8 0 amappl11 160 56 0 41 1 0 1 1 0 8 0 amappl10 152 55 0 44 2 1 1 1 0 8 0 amappl9 144 398 0 398 34 34 0 1 0 8 0 amappl8 136 831 0 667 6 0 6 6 0 8 0 amappl7 128 315 0 286 3 1 2 3 0 8 0 amappl6 120 735 0 723 1 0 1 1 0 8 0 amappl5 112 454 0 442 1 0 1 1 0 8 0 amappl4 104 797 0 762 2 1 1 2 0 8 0 amappl3 96 106097 0 106029 5 2 3 3 0 8 0 amappl2 88 18963 0 18887 3 1 2 3 0 8 0 amappl1 80 72138 0 71599 23 10 13 23 0 8 0 amappl 88 170515 0 170267 11 3 8 8 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 18039 0 17747 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 18039 0 17747 2 0 2 2 0 8 0 vmmpekpl 168 127786 0 127697 5 0 5 5 0 8 0 vmmpepl 168 1043663 0 1041109 416 284 132 147 0 357 0 vmsppl 464 18038 0 17747 40 2 38 38 0 8 0 rwobjpl 56 269813 0 243989 374 9 365 365 0 8 0 pdppl 4096 36086 0 35762 900 562 338 338 0 8 14 pvpl 32 4917393 0 4897385 729 535 194 366 0 265 0 pmappl 248 18038 0 17747 20 1 19 19 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3024 0 1059 58 1 57 57 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace km_free(0,1000,ffffffff829d5d48,ffffffff829d5d60) at km_free+0x128 sys/uvm/uvm_km.c:866 pool_p_free(ffffffff82d84918,fffffd807e7b0f90) at pool_p_free+0x14b sys/kern/subr_pool.c:1012 pool_gc_pages(0) at pool_gc_pages+0x255 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82c01160) at taskq_thread+0xe5 sys/kern/kern_task.c:450 end trace frame: 0x0, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d48ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d48ff0) at sched_idle+0x41e sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d48ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d48ff0) at sched_idle+0x41e sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5