uvm_fault(0xfffffd807ba8dcc8, 0x9, 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 354860 58488 0 0x14000 0x200 1 reaper witness_checkorder(fffffd806f1bb7a8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd806f1bb798) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff80002129a800,fffffd806f1bb798,fffffd806f1bb820,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff80002129a800,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff80002129a800) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff80002129a800,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff80002129a800,ffff80002fe17610,ffff80002fe17660) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002fe176e0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002fe176e0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f91ca419fe0, 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(0xfffffd807ba8dcc8, 0x9, 0, 1) -> e ddb{0}> trace witness_checkorder(fffffd806f1bb7a8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd806f1bb798) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff80002129a800,fffffd806f1bb798,fffffd806f1bb820,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff80002129a800,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff80002129a800) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff80002129a800,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff80002129a800,ffff80002fe17610,ffff80002fe17660) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002fe176e0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002fe176e0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f91ca419fe0, count: -9 ddb{0}> show registers rdi 0 rsi 0x20000 acpi_pdirpa+0xbe63 rbp 0xffff80002fe173b0 rbx 0xe rdx 0 rcx 0xffff80002129a800 rax 0xffffffff82c40ff0 cpu_info_full_primary+0x1ff0 r8 0x1 r9 0 r10 0x211584991b2904e9 r11 0x77046e78e00254f0 r12 0 r13 0xfffffd806f1bb7a8 r14 0x1 r15 0xffff80002129a800 rip 0xffffffff8252c28c witness_checkorder+0x1ec cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002fe17300 ss 0 witness_checkorder+0x1ec: movl 0x8(%r14),%ebx ddb{0}> show proc PROC (syz-executor.4) pid=474616 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000212a8d48,0xffff80002129b008 process=0xffff80002126a198 user=0xffff80002fe12000, vmspace=0xfffffd807ba8dcc8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98287 418000 52080 0 2 0 syz-executor.3 65728 207455 37885 0 2 0 syz-executor.7 39340 182762 37194 0 2 0 syz-executor.1 39340 430233 37194 0 3 0x4000080 fsleep syz-executor.1 37885 158340 38350 0 3 0x82 nanoslp syz-executor.7 13883 390628 0 0 3 0x14200 bored sosplice 21792 63000 38350 0 3 0x82 nanoslp syz-executor.5 23008 225230 81857 0 3 0x100082 netio ndp 81857 466941 1 0 3 0x10008a sigsusp sh 26461 64544 38350 0 2 0x2 syz-executor.6 57911 241980 38350 0 3 0x82 nanoslp syz-executor.4 52080 353787 38350 0 3 0x82 nanoslp syz-executor.3 76279 418131 38350 0 3 0x82 nanoslp syz-executor.2 37194 395249 38350 0 3 0x82 nanoslp syz-executor.1 44498 33539 38350 0 3 0x82 nanoslp syz-executor.0 38350 413061 93451 0 3 0x2000082 thrsleep syz-fuzzer 38350 465680 93451 0 3 0x6000082 nanoslp syz-fuzzer 38350 429441 93451 0 3 0x6000082 thrsleep syz-fuzzer 38350 429481 93451 0 3 0x6000082 wait syz-fuzzer 38350 275699 93451 0 3 0x6000082 wait syz-fuzzer 38350 159878 93451 0 3 0x6000082 wait syz-fuzzer 38350 386197 93451 0 3 0x6000082 wait syz-fuzzer 38350 345004 93451 0 3 0x6000082 thrsleep syz-fuzzer 38350 259477 93451 0 3 0x6000082 wait syz-fuzzer 38350 351019 93451 0 3 0x6000082 kqread syz-fuzzer 38350 184260 93451 0 3 0x6000082 thrsleep syz-fuzzer 38350 236916 93451 0 3 0x6000082 wait syz-fuzzer 38350 20615 93451 0 3 0x6000082 thrsleep syz-fuzzer 38350 170030 93451 0 3 0x6000082 wait syz-fuzzer 38350 456460 93451 0 3 0x6000082 wait syz-fuzzer 93451 124082 70455 0 3 0x10008a sigsusp ksh 70455 323136 26032 0 3 0x9a kqread sshd 19094 398489 1 0 3 0x100083 ttyin getty 26032 10064 1 0 3 0x88 kqread sshd 21582 514953 6252 74 3 0x1100092 bpf pflogd 6252 296676 1 0 3 0x80 netio pflogd 65672 230678 62118 73 3 0x1100090 kqread syslogd 62118 147993 1 0 3 0x100082 netio syslogd 57003 508671 1 0 3 0x100080 kqread resolvd 78633 453087 16255 77 3 0x100092 kqread dhcpleased 48543 274234 16255 77 3 0x100092 kqread dhcpleased 16255 317871 1 0 3 0x80 kqread dhcpleased 42788 126958 0 0 3 0x14200 bored smr 4585 248719 0 0 2 0x14200 zerothread 34289 36496 0 0 3 0x14200 aiodoned aiodoned 62108 134543 0 0 3 0x14200 syncer update 48558 39902 0 0 3 0x14200 cleaner cleaner 58488 354860 0 0 7 0x14200 reaper 55701 247120 0 0 3 0x14200 pgdaemon pagedaemon 30696 193916 0 0 3 0x14200 bored viomb 2555 9892 0 0 3 0x40014200 acpi0 acpi0 71433 17689 0 0 3 0x40014200 idle1 48634 267556 0 0 3 0x14200 bored softnet3 34417 212539 0 0 3 0x14200 bored softnet2 51537 470989 0 0 3 0x14200 bored softnet1 34306 171383 0 0 3 0x14200 bored softnet0 7846 483363 0 0 3 0x14200 bored systqmp 39736 2214 0 0 3 0x14200 bored systq 832 130443 0 0 3 0x40014200 bored softclock 35731 314767 0 0 3 0x40014200 idle0 1 329257 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 10254 6501K 7453K 78643K 17485 0 pcb 13 11K 13K 78643K 392 0 rtable 239 7K 7K 78643K 431 0 pf 35 10K 10K 78643K 77 0 ifaddr 46 15K 15K 78643K 67 0 ifgroup 60 2K 2K 78643K 113 0 sysctl 2 0K 4K 78643K 4 0 counters 62 36K 36K 78643K 84 0 ioctlops 0 0K 4K 78643K 1571 0 iov 0 0K 18K 78643K 147 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1438 90K 90K 78643K 3029 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 29 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 11 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 1923 0 sigio 1 0K 0K 78643K 163 0 proc 69 91K 128K 78643K 660 0 subproc 117 7K 7K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 145 0 in_multi 99 7K 7K 78643K 143 0 ether_multi 1 0K 0K 78643K 1 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 397 1765K 1765K 78643K 397 0 exec 0 0K 1K 78643K 536 0 pfkey data 0 0K 0K 78643K 2 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 352 90K 93K 78643K 21377 0 UVM aobj 57 2K 2K 78643K 57 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 44 0 NDP 13 0K 2K 78643K 44 0 temp 74 5920K 5986K 78643K 9923 0 kqueue 12 18K 24K 78643K 123 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 57 0 53 1 0 1 1 0 8 0 rtentry 112 135 0 24 4 0 4 4 0 8 0 unpcb 144 1072 0 1055 15 12 3 8 0 8 2 syncache 304 10 0 10 2 2 0 1 0 8 0 tcpqe 32 564 0 564 3 3 0 1 0 8 0 tcpcb 808 912 0 902 22 14 8 13 0 8 6 arp 120 23 0 4 1 0 1 1 0 8 0 inpcb 368 1910 0 1895 23 15 8 14 0 8 6 nd6 136 31 0 7 1 0 1 1 0 8 0 pkpcb 40 38 0 38 2 2 0 1 0 8 0 kcovpl 48 10 0 1 1 0 1 1 0 8 0 pffrag 232 8 0 6 1 0 1 1 0 482 0 pffrnode 88 8 0 6 1 0 1 1 0 8 0 pffrent 40 14 0 12 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 98 0 66 1 0 1 1 0 8 0 pfstkey 128 98 0 66 2 0 2 2 0 8 0 pfstate 376 98 0 66 7 3 4 4 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 256 558 0 101 29 0 29 29 0 8 0 art_table 32 559 0 101 4 0 4 4 0 8 0 art_node 16 134 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 54 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3984 0 2444 97 0 97 97 0 8 0 ffsino 272 3984 0 2444 103 0 103 103 0 8 0 nchpl 144 6824 0 6316 63 40 23 63 0 8 0 uvmvnodes 80 5504 0 0 113 0 113 113 0 8 0 vnodes 216 5504 0 0 306 0 306 306 0 8 0 namei 1024 23550 0 23550 4 3 1 2 0 8 1 percpumem 16 55 0 11 1 0 1 1 0 8 0 vmpool 696 80 0 80 2 2 0 1 0 8 0 kstatmem 264 48 0 22 2 0 2 2 0 8 0 scxspl 216 21393 0 21393 13 12 1 8 1 8 1 plimitpl 152 441 0 424 1 0 1 1 0 8 0 sigapl 424 2232 0 2182 8 2 6 7 0 8 0 futexpl 64 15315 0 15314 3 2 1 1 0 8 0 knotepl 120 225 0 0 7 0 7 7 0 8 0 kqueuepl 216 223 0 215 5 1 4 5 0 8 3 pipepl 320 722 0 690 27 24 3 12 0 8 0 fdescpl 496 2213 0 2183 5 0 5 5 0 8 0 filepl 152 14343 0 14079 31 16 15 20 0 8 4 lockfpl 104 511 0 508 2 1 1 2 0 8 0 lockfspl 48 250 0 247 1 0 1 1 0 8 0 sessionpl 144 26 0 8 1 0 1 1 0 8 0 pgrppl 48 77 0 59 1 0 1 1 0 8 0 ucredpl 104 1940 0 1928 1 0 1 1 0 8 0 zombiepl 144 2186 0 2182 2 1 1 1 0 8 0 processpl 1072 2232 0 2182 4 0 4 4 0 8 0 procpl 680 5576 0 5510 9 2 7 7 0 8 1 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 5 0 3 2 1 1 1 0 8 0 sockpl 488 3081 0 3045 55 42 13 28 0 8 8 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 16 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 279 0 0 34 4 30 34 0 8 0 mtagpl 96 105 0 0 3 0 3 3 0 8 0 mbufpl 256 674 0 0 36 0 36 36 0 8 0 bufpl 288 7851 0 1521 453 0 453 453 0 8 0 anonpl 24 345057 0 332223 117 26 91 110 0 186 1 amapchunkpl 152 67205 0 66373 46 7 39 39 0 158 3 amappl16 200 8406 0 7997 44 21 23 35 0 8 0 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 169 0 155 2 1 1 2 0 8 0 amappl13 176 10 0 10 2 2 0 1 0 8 0 amappl12 168 2901 0 2871 3 1 2 2 0 8 0 amappl11 160 68 0 52 1 0 1 1 0 8 0 amappl10 152 45 0 34 1 0 1 1 0 8 0 amappl9 144 191 0 191 4 4 0 1 0 8 0 amappl8 136 271 0 195 3 0 3 3 0 8 0 amappl7 128 75 0 64 2 0 2 2 0 8 0 amappl6 120 251 0 229 3 2 1 3 0 8 0 amappl5 112 222 0 209 1 0 1 1 0 8 0 amappl4 104 625 0 582 3 1 2 3 0 8 0 amappl3 96 13642 0 13567 4 1 3 3 0 8 0 amappl2 88 2497 0 2425 3 1 2 3 0 8 0 amappl1 80 16375 0 15796 23 9 14 23 0 8 0 amappl 88 20783 0 20562 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 56 0 0 2 0 2 2 0 8 0 uaddrrnd 24 2294 0 2264 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2294 0 2264 1 0 1 1 0 8 0 vmmpekpl 168 22925 0 22864 5 1 4 4 0 8 0 vmmpepl 168 151594 0 149250 162 40 122 122 0 357 12 vmsppl 464 2293 0 2264 5 0 5 5 0 8 0 rwobjpl 56 49274 0 42183 103 2 101 101 0 8 0 pdppl 4096 4596 0 4528 168 94 74 80 0 8 6 pvpl 32 827879 0 809449 369 163 206 367 0 265 37 pmappl 248 2293 0 2264 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 994 0 134 25 0 25 25 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(fffffd806f1bb7a8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd806f1bb798) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff80002129a800,fffffd806f1bb798,fffffd806f1bb820,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff80002129a800,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff80002129a800) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff80002129a800,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff80002129a800,ffff80002fe17610,ffff80002fe17660) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002fe176e0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002fe176e0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f91ca419fe0, 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(ffffffff82cad3f0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cad3f0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211b3548) 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(ffffffff82cad3f0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cad3f0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211b3548) at reaper+0x160 sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -5