uvm_fault(0xfffffd8069a46cc8, 0x4d00000056, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0x1ec: movl 0x8(%r14),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND 302740 47996 0 0x14000 0x200 1 reaper witness_checkorder(fffffd806f1577a8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd806f157798) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff8000212d22b8,fffffd806f157798,fffffd806f157820,5,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212d22b8,5) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212d22b8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212d22b8,0,0,3) at exit1+0x3e4 sys/kern/kern_exit.c:206 single_thread_check_locked(ffff8000212d22b8,0) at single_thread_check_locked+0x24b sys/kern/kern_sig.c:2016 userret(ffff8000212d22b8) at userret+0x72 single_thread_check sys/kern/kern_sig.c:2060 [inline] userret(ffff8000212d22b8) at userret+0x72 sys/kern/kern_sig.c:1970 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x72570b9c85b0, count: 6 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(0xfffffd8069a46cc8, 0x4d00000056, 0, 1) -> e ddb{0}> trace witness_checkorder(fffffd806f1577a8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd806f157798) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff8000212d22b8,fffffd806f157798,fffffd806f157820,5,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212d22b8,5) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212d22b8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212d22b8,0,0,3) at exit1+0x3e4 sys/kern/kern_exit.c:206 single_thread_check_locked(ffff8000212d22b8,0) at single_thread_check_locked+0x24b sys/kern/kern_sig.c:2016 userret(ffff8000212d22b8) at userret+0x72 single_thread_check sys/kern/kern_sig.c:2060 [inline] userret(ffff8000212d22b8) at userret+0x72 sys/kern/kern_sig.c:1970 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x72570b9c85b0, count: -9 ddb{0}> show registers rdi 0 rsi 0x20000 acpi_pdirpa+0xbe63 rbp 0xffff800027d935c0 rbx 0xe rdx 0 rcx 0xffff8000212d22b8 rax 0xffffffff82b79ff0 cpu_info_full_primary+0x1ff0 r8 0x1 r9 0 r10 0x632c1ba78463304f r11 0xad5b09e45446c2a r12 0 r13 0xfffffd806f1577a8 r14 0x4d0000004e r15 0xffff8000212d22b8 rip 0xffffffff81009f9c witness_checkorder+0x1ec cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027d93510 ss 0 witness_checkorder+0x1ec: movl 0x8(%r14),%ebx ddb{0}> show proc PROC (syz-executor.7) pid=315975 stat=onproc flags process=1008 proc=82000 pri=0, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff8000212d32a8,0xffff8000212d2020 process=0xffff80002129d508 user=0xffff800027d8e000, vmspace=0xfffffd8069a46cc8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91610 222716 49244 0 2 0 syz-executor.2 78457 484808 2264 0 2 0 syz-executor.1 78457 455516 2264 0 2 0x4000000 syz-executor.1 56928 280486 61380 0 2 0 syz-executor.6 56928 363624 61380 0 2 0x4000000 syz-executor.6 82425 197288 96371 0 2 0 syz-executor.4 82425 403688 96371 0 2 0x4000000 syz-executor.4 76767 13100 21420 0 2 0 syz-executor.3 76767 65925 21420 0 2 0x4000000 syz-executor.3 32433 462186 36618 0 2 0 syz-executor.0 32433 519562 36618 0 3 0x4000080 fsleep syz-executor.0 61380 84362 56084 0 3 0x82 nanoslp syz-executor.6 54706 184037 0 0 3 0x14200 bored sosplice 9033 420965 56084 0 3 0x82 nanoslp syz-executor.7 54415 254500 56084 0 2 0x2 syz-executor.5 96371 331799 56084 0 3 0x82 nanoslp syz-executor.4 21420 247580 56084 0 3 0x82 nanoslp syz-executor.3 49244 82972 56084 0 2 0x482 syz-executor.2 2264 297464 56084 0 3 0x82 nanoslp syz-executor.1 36618 111507 56084 0 2 0x482 syz-executor.0 56084 134694 87234 0 3 0x2000082 wait syz-fuzzer 56084 367922 87234 0 3 0x6000082 nanoslp syz-fuzzer 56084 79987 87234 0 3 0x6000082 wait syz-fuzzer 56084 326587 87234 0 3 0x6000082 wait syz-fuzzer 56084 272698 87234 0 3 0x6000082 thrsleep syz-fuzzer 56084 454665 87234 0 3 0x6000082 thrsleep syz-fuzzer 56084 148718 87234 0 3 0x6000082 wait syz-fuzzer 56084 49894 87234 0 3 0x6000082 wait syz-fuzzer 56084 329955 87234 0 3 0x6000082 thrsleep syz-fuzzer 56084 403182 87234 0 3 0x6000082 wait syz-fuzzer 56084 362089 87234 0 3 0x6000082 thrsleep syz-fuzzer 56084 69575 87234 0 3 0x6000082 wait syz-fuzzer 56084 94868 87234 0 3 0x6000082 wait syz-fuzzer 56084 152515 87234 0 3 0x6000082 thrsleep syz-fuzzer 56084 459793 87234 0 3 0x6000082 kqread syz-fuzzer 87234 74650 50289 0 3 0x10008a sigsusp ksh 50289 521727 31260 0 3 0x9a kqread sshd 19840 120745 1 0 3 0x100083 ttyin getty 31260 70060 1 0 3 0x88 kqread sshd 69410 86397 96650 74 3 0x1100092 bpf pflogd 96650 127101 1 0 3 0x80 netio pflogd 29970 17776 45352 73 3 0x1100090 kqread syslogd 45352 30742 1 0 3 0x100082 netio syslogd 1151 165465 1 0 3 0x100080 kqread resolvd 23667 321893 40786 77 3 0x100092 kqread dhcpleased 74716 124480 40786 77 3 0x100092 kqread dhcpleased 40786 222104 1 0 3 0x80 kqread dhcpleased 10623 22599 0 0 3 0x14200 bored smr 64151 355253 0 0 2 0x14200 zerothread 38404 84758 0 0 3 0x14200 aiodoned aiodoned 70466 97102 0 0 3 0x14200 syncer update 83965 120262 0 0 3 0x14200 cleaner cleaner 47996 302740 0 0 7 0x14200 reaper 82748 433141 0 0 3 0x14200 pgdaemon pagedaemon 63299 505539 0 0 3 0x14200 bored viomb 5530 131222 0 0 3 0x40014200 acpi0 acpi0 21500 256931 0 0 3 0x40014200 idle1 25093 409456 0 0 3 0x14200 bored softnet3 96643 190052 0 0 3 0x14200 bored softnet2 61459 255809 0 0 3 0x14200 bored softnet1 38630 185505 0 0 3 0x14200 bored softnet0 2153 451113 0 0 3 0x14200 bored systqmp 35298 171680 0 0 3 0x14200 bored systq 85919 300228 0 0 3 0x40014200 bored softclock 71765 361844 0 0 3 0x40014200 idle0 1 181 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10292 6684K 7169K 78643K 12246 0 pcb 13 10K 12K 78643K 32 0 rtable 234 6K 6K 78643K 424 0 pf 32 9K 10K 78643K 45 0 ifaddr 45 15K 15K 78643K 51 0 ifgroup 55 2K 2K 78643K 59 0 counters 60 35K 35K 78643K 62 0 ioctlops 0 0K 4K 78643K 1492 0 iov 0 0K 4K 78643K 65 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1327 83K 83K 78643K 1657 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 84 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 89K 78643K 738 0 sigio 0 0K 0K 78643K 45 0 proc 69 91K 115K 78643K 566 0 subproc 104 6K 6K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 7K 7K 78643K 110 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 133 599K 599K 78643K 133 0 exec 0 0K 1K 78643K 433 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 329 84K 88K 78643K 9598 0 UVM aobj 14 2K 2K 78643K 14 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 11 0 NDP 12 0K 1K 78643K 31 0 temp 73 5916K 5984K 78643K 12133 0 kqueue 12 18K 26K 78643K 130 0 SYN cache 2 16K 16K 78643K 2 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 77 0 73 2 1 1 2 0 8 0 rtentry 112 123 0 13 4 0 4 4 0 8 0 unpcb 144 581 0 566 7 3 4 6 0 8 3 syncache 304 11 0 11 3 2 1 1 0 8 1 tcpqe 32 217 0 217 2 2 0 1 0 8 0 tcpcb 808 648 0 641 14 6 8 14 0 8 7 arp 120 20 0 2 1 0 1 1 0 8 0 inpcb 368 891 0 878 13 6 7 13 0 8 5 nd6 136 28 0 4 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 pffrag 232 3 0 1 1 0 1 1 0 482 0 pffrnode 88 3 0 1 1 0 1 1 0 8 0 pffrent 40 9 0 7 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 49 0 12 1 0 1 1 0 8 0 pfstkey 128 49 0 12 2 0 2 2 0 8 0 pfstate 376 49 0 12 5 0 5 5 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 503 0 51 29 0 29 29 0 8 0 art_table 32 504 0 51 4 0 4 4 0 8 0 art_node 16 122 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 7 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2366 0 912 92 0 92 92 0 8 0 ffsino 272 2366 0 912 98 0 98 98 0 8 0 nchpl 144 3439 0 1788 63 0 63 63 0 8 0 uvmvnodes 80 2680 0 0 55 0 55 55 0 8 0 vnodes 216 2680 0 0 149 0 149 149 0 8 0 namei 1024 12232 0 12232 3 1 2 2 0 8 2 percpumem 16 44 0 1 1 0 1 1 0 8 0 vmpool 696 8 0 8 1 1 0 1 0 8 0 kstatmem 264 26 0 2 2 0 2 2 0 8 0 scxspl 216 11239 0 11239 10 9 1 8 1 8 1 plimitpl 152 51 0 35 1 0 1 1 0 8 0 sigapl 424 1059 0 1011 8 2 6 7 0 8 0 futexpl 64 5236 0 5235 1 0 1 1 0 8 0 knotepl 120 112 0 0 4 0 4 4 0 8 0 kqueuepl 216 140 0 132 1 0 1 1 0 8 0 pipepl 320 411 0 383 8 2 6 8 0 8 3 fdescpl 496 1041 0 1011 5 1 4 5 0 8 0 filepl 152 6308 0 6061 19 3 16 16 0 8 6 lockfpl 104 186 0 184 1 0 1 1 0 8 0 lockfspl 48 91 0 89 1 0 1 1 0 8 0 sessionpl 144 25 0 8 1 0 1 1 0 8 0 pgrppl 48 31 0 14 1 0 1 1 0 8 0 ucredpl 104 913 0 900 1 0 1 1 0 8 0 zombiepl 144 1012 0 1011 1 0 1 1 0 8 0 processpl 1072 1059 0 1011 4 0 4 4 0 8 0 procpl 680 2165 0 2097 8 1 7 7 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 488 1584 0 1552 40 28 12 24 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 266 0 0 34 0 34 34 0 8 0 mtagpl 96 88 0 0 3 0 3 3 0 8 0 mbufpl 256 320 0 0 19 0 19 19 0 8 0 bufpl 288 5181 0 141 360 0 360 360 0 8 0 anonpl 24 253919 0 240749 101 0 101 101 0 186 6 amapchunkpl 152 30857 0 29977 38 0 38 38 0 158 0 amappl16 200 6758 0 6378 34 6 28 33 0 8 7 amappl15 192 25 0 24 2 1 1 1 0 8 0 amappl14 184 186 0 172 2 1 1 2 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1746 0 1714 4 2 2 3 0 8 0 amappl11 160 93 0 79 1 0 1 1 0 8 0 amappl10 152 45 0 35 1 0 1 1 0 8 0 amappl9 144 227 0 226 2 1 1 1 0 8 0 amappl8 136 206 0 153 2 0 2 2 0 8 0 amappl7 128 61 0 47 2 0 2 2 0 8 0 amappl6 120 263 0 242 2 1 1 2 0 8 0 amappl5 112 189 0 177 1 0 1 1 0 8 0 amappl4 104 601 0 557 3 1 2 3 0 8 0 amappl3 96 6286 0 6200 4 1 3 3 0 8 0 amappl2 88 1311 0 1241 3 1 2 3 0 8 0 amappl1 80 12337 0 11780 23 9 14 23 0 8 0 amappl 88 9045 0 8818 6 0 6 6 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 13 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1049 0 1019 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1049 0 1019 1 0 1 1 0 8 0 vmmpekpl 168 14627 0 14577 3 0 3 3 0 8 0 vmmpepl 168 84561 0 82229 123 11 112 117 0 357 10 vmsppl 464 1048 0 1019 5 1 4 5 0 8 0 rwobjpl 56 30859 0 26705 61 2 59 59 0 8 0 pdppl 4096 2106 0 2038 122 52 70 82 0 8 2 pvpl 32 564416 0 545583 343 32 311 342 0 265 143 pmappl 248 1048 0 1019 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 805 0 68 22 0 22 22 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(fffffd806f1577a8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd806f157798) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff8000212d22b8,fffffd806f157798,fffffd806f157820,5,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212d22b8,5) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212d22b8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212d22b8,0,0,3) at exit1+0x3e4 sys/kern/kern_exit.c:206 single_thread_check_locked(ffff8000212d22b8,0) at single_thread_check_locked+0x24b sys/kern/kern_sig.c:2016 userret(ffff8000212d22b8) at userret+0x72 single_thread_check sys/kern/kern_sig.c:2060 [inline] userret(ffff8000212d22b8) at userret+0x72 sys/kern/kern_sig.c:1970 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x72570b9c85b0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) 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 __mp_lock(ffffffff82d8c508) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d8c508) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211b3a98) at reaper+0x160 sys/kern/kern_exit.c:454 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) 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 __mp_lock(ffffffff82d8c508) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d8c508) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211b3a98) at reaper+0x160 sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -5