uvm_fault(0xfffffd806c93ad78, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 256096 23656 0 0x14000 0x200 1 reaper witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff8000015a5930,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff8000015c1000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,1,2000,ffff80003c407780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c407780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c434f60) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8061ff5a28,1,fffffd80097fd5b0,ffff80003c407780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651e6ae8,ffff80003c407780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651e6ae8,ffff80003c407780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651e6ae8,ffff80003c407780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80651e6ae8,ffff80003c407780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c407780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c407780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c407780,ffff80003c4352d0,ffff80003c435220) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4352d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4352d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 end trace frame: 0xffff80003c435350, count: 0 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(0xfffffd806c93ad78, 0x48, 0, 1) -> e ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff8000015a5930,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff8000015c1000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,1,2000,ffff80003c407780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c407780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c434f60) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8061ff5a28,1,fffffd80097fd5b0,ffff80003c407780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651e6ae8,ffff80003c407780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651e6ae8,ffff80003c407780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651e6ae8,ffff80003c407780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80651e6ae8,ffff80003c407780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c407780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c407780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c407780,ffff80003c4352d0,ffff80003c435220) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4352d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4352d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72520f104250, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c434d80 rbx 0 rdx 0 rcx 0xffff80003c407780 rax 0xffffffff8384affe cpu_info_full_primary+0x1ffe r8 0 r9 0 r10 0x5d9c5b67a021059 r11 0x44d17da2b6e74f42 r12 0xfe r13 0x9 r14 0x28 r15 0 rip 0xffffffff818302b5 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c434ce0 ss 0x10 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=515145 pid=53741 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c407780 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c406a88,0xffff80003c4062d0 process=0xffff80002a3bd358 user=0xffff80003c430000, vmspace=0xfffffd806c93ad78 estcpu=36, cpticks=7, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88686 236590 12484 0 2 0 syz-executor 39989 334323 94228 0 2 0 syz-executor 45937 386336 58139 0 2 0 syz-executor 45937 82792 58139 0 2 0x4000000 syz-executor 98708 329033 44304 0 3 0x100082 sbwait arp 44304 105987 61006 0 3 0x10008a sigsusp sh 55486 58258 75003 0 3 0x82 nanoslp syz-executor 12484 491071 75003 0 2 0x2 syz-executor 3162 410242 75003 0 3 0x82 nanoslp syz-executor 21681 411130 75003 0 3 0x82 nanoslp syz-executor 82211 493936 75003 0 3 0x82 nanoslp syz-executor 94228 68551 75003 0 3 0x82 nanoslp syz-executor 58139 274360 75003 0 3 0x82 nanoslp syz-executor 61006 291129 75003 0 3 0x82 wait syz-executor 75003 30114 98645 0 3 0x82 kqread syz-executor 98645 447189 86188 0 3 0x10008a sigsusp ksh 86188 372349 45949 0 3 0x98 kqread sshd-session 45949 91019 82567 0 3 0x92 kqread sshd-session 75435 213879 1 0 3 0x100083 ttyin getty 82567 333377 1 0 3 0x88 kqread sshd 89861 288355 36248 74 3 0x1100092 bpf pflogd 36248 96023 1 0 3 0x80 sbwait pflogd 6737 321760 45186 73 3 0x1100090 kqread syslogd 45186 278233 1 0 3 0x100082 sbwait syslogd 59215 40429 1 0 3 0x100080 kqread resolvd 55356 522393 69777 77 3 0x100092 kqread dhcpleased 24939 477067 69777 77 3 0x100092 kqread dhcpleased 69777 424287 1 0 3 0x80 kqread dhcpleased 73003 136026 0 0 3 0x14200 bored smr 43734 75620 0 0 2 0x14200 zerothread 92000 77818 0 0 3 0x14200 aiodoned aiodoned 80306 115827 0 0 3 0x14200 syncer update 54294 282568 0 0 3 0x14200 cleaner cleaner 23656 256096 0 0 7 0x14200 reaper 78724 29887 0 0 3 0x14200 pgdaemon pagedaemon 74153 160719 0 0 3 0x14200 bored viomb 21002 260215 0 0 3 0x40014200 acpi0 acpi0 43752 343770 0 0 3 0x40014200 idle1 40660 196842 0 0 3 0x14200 bored softnet1 42772 396833 0 0 3 0x14200 bored softnet0 99530 128963 0 0 3 0x14200 bored systqmp 25105 193177 0 0 3 0x14200 bored systq 81436 142960 0 0 3 0x14200 tmoslp softclockmp 41591 351969 0 0 3 0x40014200 tmoslp softclock 57839 102565 0 0 3 0x40014200 idle0 1 228951 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 11092 12281K 14030K 166960K 12556 0 pcb 17 12K 12K 166960K 26 0 rtable 221 6K 6K 166960K 330 0 pf 35 17K 18K 166960K 41 0 ifaddr 41 7K 7K 166960K 44 0 ifgroup 55 2K 2K 166960K 57 0 sysctl 2 1K 9K 166960K 7 0 counters 70 37K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1603 0 iov 0 0K 4K 166960K 4 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1443 91K 91K 166960K 1561 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 208 0 sigio 0 0K 0K 166960K 1 0 proc 72 115K 164K 166960K 534 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 10 0 in_multi 89 6K 6K 166960K 89 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 374 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 161K 173K 166960K 3686 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 44 88K 108K 166960K 1323 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 12 0K 1K 166960K 27 0 temp 40 8678K 8742K 166960K 6278 0 kqueue 13 20K 26K 166960K 37 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 35 0 31 1 0 1 1 0 8 0 rtentry 176 103 0 1 5 0 5 5 0 8 0 unpcb 144 62 0 45 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 23 0 19 1 0 1 1 0 8 0 arp 136 17 0 0 1 0 1 1 0 8 0 inpcb 328 113 0 106 2 0 2 2 0 8 1 nd6 152 21 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 67 0 65 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 pfstkey 128 2 0 2 1 0 1 1 0 8 1 pfstate 448 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 412 0 0 26 0 26 26 0 8 0 art_table 40 413 0 0 5 0 5 5 0 8 0 art_node 32 103 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1700 0 182 95 0 95 95 0 8 0 ffsino 296 1700 0 182 117 0 117 117 0 8 0 nchpl 144 1994 0 292 64 0 64 64 0 8 0 vnodes 216 1955 0 0 109 0 109 109 0 8 0 namei 1024 6546 0 6546 2 0 2 2 0 8 2 percpumem 16 51 0 1 1 0 1 1 0 8 0 kstatmem 264 28 0 2 2 0 2 2 0 8 0 scxspl 216 6324 0 6324 3 2 1 2 1 8 1 plimitpl 152 42 0 25 1 0 1 1 0 8 0 sigapl 424 516 0 467 7 0 7 7 0 8 0 knotepl 120 308 0 0 10 0 10 10 0 8 0 kqueuepl 224 79 0 70 3 0 3 3 0 8 2 pipepl 344 122 0 95 3 0 3 3 0 8 0 fdescpl 528 500 0 468 3 0 3 3 0 8 0 filepl 160 2240 0 2016 13 0 13 13 0 8 2 lockfpl 104 28 0 24 1 0 1 1 0 8 0 lockfspl 48 16 0 12 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 182 0 169 1 0 1 1 0 8 0 zombiepl 144 471 0 467 1 0 1 1 0 8 0 processpl 1232 516 0 467 5 0 5 5 0 8 0 procpl 664 667 0 616 6 0 6 6 0 8 1 sockpl 752 213 0 185 4 0 4 4 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 235 0 0 15 0 15 15 0 8 0 bufpl 280 2438 0 131 165 0 165 165 0 8 0 anonpl 32 6563 0 0 53 0 53 53 0 246 0 amapchunkpl 152 10952 0 10541 29 0 29 29 0 158 10 amappl16 200 2007 0 1990 5 1 4 5 0 8 2 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 422 0 420 1 0 1 1 0 8 0 amappl12 168 859 0 817 3 0 3 3 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 49 0 35 1 0 1 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 53 0 51 1 0 1 1 0 8 0 amappl7 128 107 0 106 1 0 1 1 0 8 0 amappl6 120 285 0 270 1 0 1 1 0 8 0 amappl5 112 80 0 70 1 0 1 1 0 8 0 amappl4 104 407 0 374 2 0 2 2 0 8 1 amappl3 96 1733 0 1657 4 1 3 3 0 8 0 amappl2 88 606 0 533 2 0 2 2 0 8 0 amappl1 80 9369 0 8752 16 0 16 16 0 8 2 amappl 88 2954 0 2809 5 0 5 5 0 92 1 uvmvnodes 80 103 0 0 3 0 3 3 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 7 0 7 2 1 1 1 0 8 1 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 500 0 468 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 500 0 468 1 0 1 1 0 8 0 vmmpekpl 168 5923 0 5889 2 0 2 2 0 8 0 vmmpepl 168 39637 0 37743 89 0 89 89 0 357 2 vmsppl 488 499 0 468 5 0 5 5 0 8 0 rwobjpl 80 14244 0 13213 25 0 25 25 0 8 1 pdppl 4096 1007 0 936 97 24 73 85 0 8 2 pvpl 32 13784 0 0 112 0 112 112 0 265 0 pmappl 256 499 0 468 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 270 0 26 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff8000015a5930,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff8000015c1000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,1,2000,ffff80003c407780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c407780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c434f60) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8061ff5a28,1,fffffd80097fd5b0,ffff80003c407780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651e6ae8,ffff80003c407780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651e6ae8,ffff80003c407780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651e6ae8,ffff80003c407780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80651e6ae8,ffff80003c407780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c407780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c407780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c407780,ffff80003c4352d0,ffff80003c435220) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4352d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4352d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72520f104250, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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(ffffffff83948400) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83948400) at __mp_lock+0x192 sys/kern/kern_lock.c:173 reaper(ffff8000ffffdc90) at reaper+0x211 sys/kern/kern_exit.c:505 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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(ffffffff83948400) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83948400) at __mp_lock+0x192 sys/kern/kern_lock.c:173 reaper(ffff8000ffffdc90) at reaper+0x211 sys/kern/kern_exit.c:505 end trace frame: 0x0, count: -5