uvm_fault(0xfffffd8070dbd8a8, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mtx_enter+0x6e: movq 0(%r14),%rax TID PID UID PRFLAGS PFLAGS CPU COMMAND mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000014a7830,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001438100) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a878f80) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80098fa6c0,81,fffffd8007bfb618,ffff800038163a18) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd800bd09358,ffff800038163a18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd800bd09358,ffff800038163a18) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff800038163a18) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff800038163a18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800038163a18,ffff80002a8792e0,ffff80002a879230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a8792e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8792e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70c3a3563de0, count: 1 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd8070dbd8a8, 0x18, 0, 1) -> e ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000014a7830,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001438100) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a878f80) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80098fa6c0,81,fffffd8007bfb618,ffff800038163a18) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd800bd09358,ffff800038163a18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd800bd09358,ffff800038163a18) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff800038163a18) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff800038163a18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800038163a18,ffff80002a8792e0,ffff80002a879230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a8792e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8792e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70c3a3563de0, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002a878e30 rbx 0 rdx 0 rcx 0xffff800038163a18 rax 0xffff800038163a00 r8 0 r9 0 r10 0x3a28793704dc1206 r11 0x79e3c290e2c57442 r12 0x1 r13 0 r14 0x18 r15 0 rip 0xffffffff819e02fe mtx_enter+0x6e cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff80002a878e00 ss 0x10 mtx_enter+0x6e: movq 0(%r14),%rax ddb> show proc PROC (syz-executor) tid=272421 pid=46594 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800038163a18 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a8114d8,0xffff800038162568 process=0xffff80002d12cdb8 user=0xffff80002a874000, vmspace=0xfffffd8070dbd8a8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40333 153643 72307 0 2 0 syz-executor 40333 285407 72307 0 2 0x4000000 syz-executor 46187 425415 28728 0 2 0 syz-executor 46187 418946 28728 0 3 0x4000080 nanoslp syz-executor 46187 28324 28728 0 3 0x4000080 fsleep syz-executor 9036 254707 51968 0 3 0 vmmaplk syz-executor 9036 405245 51968 0 2 0x4000000 syz-executor 36620 166608 1401 0 2 0x82000 syz-executor 36620 370516 1401 0 4 0x4082000 syz-executor 36620 111853 1401 0 3 0x4002000 suspend syz-executor 36245 248537 34152 0 2 0 syz-executor 36245 166618 34152 0 3 0x4000080 kqsel syz-executor 8596 411763 11801 0 2 0 syz-executor 8596 516621 11801 0 3 0x4000080 kqread syz-executor 8596 459850 11801 0 3 0x4000080 kqread syz-executor 8596 462745 11801 0 2 0x4000000 syz-executor 25698 98738 46503 0 3 0x82 nanoslp syz-executor 34152 125936 46503 0 3 0x82 nanoslp syz-executor 72307 294085 46503 0 3 0x82 nanoslp syz-executor 51968 151777 46503 0 3 0x82 nanoslp syz-executor 44284 243064 80419 0 3 0x82 sbwait sshd-session 114 6384 0 0 3 0x14200 bored sosplice 28728 488020 46503 0 3 0x82 nanoslp syz-executor 1401 119453 46503 0 3 0x82 nanoslp syz-executor 19454 548 46503 0 2 0x2 syz-executor 11801 438263 46503 0 3 0x82 nanoslp syz-executor 46503 146987 32563 0 3 0x82 kqread syz-executor 32563 488630 77019 0 3 0x10008a sigsusp ksh 77019 454339 59526 0 3 0x98 kqread sshd-session 59526 313512 80419 0 3 0x92 kqread sshd-session 3967 164984 1 0 3 0x100083 ttyin getty 80419 174974 1 0 3 0x88 kqread sshd 12091 360172 75077 73 3 0x1100090 kqread syslogd 75077 185760 1 0 3 0x100082 sbwait syslogd 53819 25835 1 0 3 0x100080 kqread resolvd 14539 355544 16936 77 3 0x100092 kqread dhcpleased 92084 399257 16936 77 3 0x100092 kqread dhcpleased 16936 70583 1 0 3 0x80 kqread dhcpleased 40221 206459 0 0 3 0x14200 bored smr 56952 146859 0 0 2 0x14200 zerothread 71424 446026 0 0 3 0x14200 aiodoned aiodoned 55137 465877 0 0 3 0x14200 syncer update 38990 430357 0 0 3 0x14200 cleaner cleaner 62285 316944 0 0 2 0x14200 reaper 28819 96925 0 0 3 0x14200 pgdaemon pagedaemon 90842 133921 0 0 3 0x14200 bored viomb 75370 174003 0 0 3 0x40014200 acpi0 acpi0 1892 428327 0 0 3 0x14200 bored softnet7 67244 175327 0 0 3 0x14200 bored softnet6 37481 512208 0 0 3 0x14200 bored softnet5 92509 188732 0 0 3 0x14200 bored softnet4 1867 281411 0 0 3 0x14200 bored softnet3 40893 190967 0 0 3 0x14200 bored softnet2 73299 453268 0 0 3 0x14200 bored softnet1 20451 438746 0 0 3 0x14200 bored softnet0 56480 510633 0 0 3 0x14200 bored systqmp 14868 348666 0 0 3 0x14200 bored systq 72951 241232 0 0 3 0x40014200 tmoslp softclock 5636 513014 0 0 3 0x40014200 idle0 1 213470 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10206 11111K 11237K 166960K 11838 0 pcb 17 14K 18K 166960K 179 0 rtable 179 8K 8K 166960K 501 0 pf 36 14K 19K 166960K 108 0 ifaddr 36 6K 7K 166960K 98 0 ifgroup 54 2K 2K 166960K 125 0 sysctl 3 1K 9K 166960K 10 0 counters 33 17K 18K 166960K 62 0 ioctlops 0 0K 4K 166960K 130 0 iov 1 2K 28K 166960K 115 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1370 86K 87K 166960K 2045 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 70 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 831 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 124K 166960K 685 0 subproc 72 4K 4K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 149 0 in_multi 72 5K 7K 166960K 201 0 ether_multi 1 0K 0K 166960K 4 0 mrt 2 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 620 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 163K 190K 166960K 8902 0 UVM aobj 60 3K 4K 166960K 63 0 pinsyscall 40 80K 96K 166960K 2024 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 32 0 NDP 12 0K 2K 166960K 65 0 temp 56 8638K 8766K 166960K 35748 0 kqueue 15 22K 30K 166960K 144 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 142 0 139 2 1 1 2 0 8 0 rtentry 136 171 0 110 4 0 4 4 0 8 0 unpcb 144 484 0 467 4 0 4 4 0 8 3 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 248 0 242 7 6 1 7 0 8 0 arp 88 20 0 11 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 3 0 2 1 0 1 1 0 8 0 inpcb 328 769 0 759 9 5 4 7 0 8 2 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 104 33 0 22 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 19 0 19 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 10 0 4 1 0 1 1 0 8 0 pfstkey 128 12 0 3 1 0 1 1 0 8 0 pfstate 384 6 0 3 1 0 1 1 0 8 0 pfrule 1344 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 771 0 492 31 8 23 28 0 8 4 art_table 40 774 0 492 5 1 4 5 0 8 0 art_node 32 169 0 116 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semapl 112 67 0 57 1 0 1 1 0 8 0 shmpl 112 60 0 3 2 0 2 2 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2916 0 1410 95 0 95 95 0 8 0 ffsino 256 2916 0 1410 95 0 95 95 0 8 0 nchpl 144 3952 0 2261 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 3304 0 0 68 0 68 68 0 8 0 vnodes 216 3304 0 0 184 0 184 184 0 8 0 namei 1024 13871 0 13871 2 1 1 2 0 8 1 kstatmem 264 72 0 48 2 0 2 2 0 8 0 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 13238 0 13238 9 7 2 8 1 8 2 plimitpl 152 127 0 110 1 0 1 1 0 8 0 sigapl 424 1106 0 1055 7 1 6 7 0 8 0 knotepl 120 28564 0 28266 18 8 10 10 0 8 0 kqueuepl 184 241 0 229 1 0 1 1 0 8 0 pipepl 304 177 0 150 3 0 3 3 0 8 0 fdescpl 448 1084 0 1054 5 1 4 5 0 8 0 filepl 120 6293 0 6073 14 2 12 12 0 8 2 lockfpl 104 402 0 399 2 1 1 2 0 8 0 lockfspl 48 125 0 122 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 47 0 30 1 0 1 1 0 8 0 ucredpl 104 1070 0 1059 1 0 1 1 0 8 0 zombiepl 144 1240 0 1239 2 1 1 1 0 8 0 processpl 1168 1106 0 1055 5 1 4 5 0 8 0 procpl 664 2102 0 2039 6 0 6 6 0 8 0 sosppl 168 4 0 4 2 1 1 1 0 8 1 sockpl 552 1457 0 1427 12 4 8 8 0 8 4 mcl64k 65536 30 0 30 2 1 1 1 0 8 1 mcl16k 16384 9 0 9 1 1 0 1 0 8 0 mcl8k 8192 6 0 6 2 1 1 1 0 8 1 mcl4k 4096 3260 0 3208 15 7 8 14 0 8 0 mcl2k 2048 1067 0 1064 4 2 2 3 0 8 1 mtagpl 96 7 0 7 2 1 1 1 0 8 1 mbufpl 256 11293 0 11167 17 6 11 15 0 8 0 bufpl 280 4460 0 119 311 0 311 311 0 8 0 anonpl 24 156352 0 152207 60 13 47 47 0 187 21 amapchunkpl 152 28946 0 28465 44 7 37 37 0 158 16 amappl16 200 2679 0 2595 15 4 11 12 0 8 6 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 119 0 108 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1790 0 1760 3 1 2 3 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 25 0 25 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 21 0 20 1 0 1 1 0 8 0 amappl7 128 111 0 100 1 0 1 1 0 8 0 amappl6 120 231 0 226 1 0 1 1 0 8 0 amappl5 112 135 0 128 1 0 1 1 0 8 0 amappl4 104 274 0 257 1 0 1 1 0 8 0 amappl3 96 5504 0 5395 4 0 4 4 0 8 0 amappl2 88 707 0 646 2 0 2 2 0 8 0 amappl1 80 11355 0 10722 14 0 14 14 0 8 0 amappl 88 8015 0 7851 5 0 5 5 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 7 0 7 1 1 0 1 0 8 0 dma128 128 256 0 256 2 1 1 1 0 8 1 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 62 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1084 0 1054 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1084 0 1054 1 0 1 1 0 8 0 vmmpekpl 168 9319 0 9271 3 0 3 3 0 8 0 vmmpepl 168 72464 0 70414 99 1 98 98 0 357 6 vmsppl 368 1083 0 1054 4 1 3 4 0 8 0 rwobjpl 40 23854 0 19494 45 0 45 45 0 8 0 pdppl 4096 2175 0 2108 117 48 69 83 0 8 2 pvpl 32 464397 0 454573 163 28 135 135 0 265 46 pmappl 216 1083 0 1054 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 413 0 87 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000014a7830,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001438100) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a878f80) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80098fa6c0,81,fffffd8007bfb618,ffff800038163a18) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd800bd09358,ffff800038163a18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd800bd09358,ffff800038163a18) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff800038163a18) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff800038163a18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800038163a18,ffff80002a8792e0,ffff80002a879230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a8792e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8792e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70c3a3563de0, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000014a7830,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001438100) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800038163a18) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a878f80) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80098fa6c0,81,fffffd8007bfb618,ffff800038163a18) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd800bd09358,ffff800038163a18) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd800bd09358,ffff800038163a18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd800bd09358,ffff800038163a18) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff800038163a18) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff800038163a18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800038163a18,ffff80002a8792e0,ffff80002a879230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a8792e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8792e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70c3a3563de0, count: -14