uvm_fault(0xfffffd806ba45460, 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(ffff800001499d30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149a980) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000389471d0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807e172ea0,1,fffffd8007bfb5b0,ffff80003c996d20) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80758a95a0,ffff80003c996d20) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80758a95a0,ffff80003c996d20) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c996d20) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c996d20,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c996d20,ffff800038947530,ffff800038947480) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038947530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038947530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76066a895050, 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(0xfffffd806ba45460, 0x18, 0, 1) -> e ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff800001499d30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149a980) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000389471d0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807e172ea0,1,fffffd8007bfb5b0,ffff80003c996d20) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80758a95a0,ffff80003c996d20) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80758a95a0,ffff80003c996d20) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c996d20) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c996d20,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c996d20,ffff800038947530,ffff800038947480) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038947530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038947530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76066a895050, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff800038947080 rbx 0 rdx 0 rcx 0xffff80003c996d20 rax 0xffff80003c996d00 r8 0xffffffffffffffff r9 0 r10 0x401532e112068d5 r11 0x18046796ccf18f6b r12 0x1 r13 0 r14 0x18 r15 0 rip 0xffffffff815d4e0e mtx_enter+0x6e cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff800038947050 ss 0x10 mtx_enter+0x6e: movq 0(%r14),%rax ddb> show proc PROC (syz-executor) tid=484389 pid=44188 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=77, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c996d20 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a81e018,0xffff80002a81efb8 process=0xffff8000ffff44a0 user=0xffff800038942000, vmspace=0xfffffd806ba45460 estcpu=27, cpticks=1, pctcpu=0.1, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91967 289831 81548 0 2 0 syz-executor 91967 297062 81548 0 3 0x4000080 fsleep syz-executor 91967 399230 81548 0 3 0x4000080 fsleep syz-executor 34432 76064 11620 0 2 0x10 syz-executor 34432 471222 11620 0 3 0x4000090 fsleep syz-executor 7209 132639 1755 0 2 0 syz-executor 7209 153184 1755 0 2 0x4000000 syz-executor 11620 237123 4711 0 2 0xc82 syz-executor 24824 334383 4711 0 2 0x2 syz-executor 23454 244716 4711 0 2 0xc82 syz-executor 97995 87054 4711 0 2 0x2 syz-executor 81548 111176 4711 0 3 0x82 nanoslp syz-executor 81070 215893 4711 0 2 0x2 syz-executor 1755 131427 4711 0 2 0xc82 syz-executor 88351 174774 4711 0 2 0x10000c82 syz-executor 4711 208655 66239 0 3 0x82 kqread syz-executor 66239 390866 58956 0 3 0x10008a sigsusp ksh 58956 182133 96065 0 3 0x98 kqread sshd-session 96065 17794 59446 0 3 0x92 kqread sshd-session 29172 467188 1 0 3 0x100083 ttyin getty 59446 17490 1 0 3 0x88 kqread sshd 28640 259498 52345 73 3 0x1100090 kqread syslogd 52345 63677 1 0 3 0x100082 sbwait syslogd 27789 168968 1 0 3 0x100080 kqread resolvd 62676 501960 96850 77 3 0x100092 kqread dhcpleased 74316 516071 96850 77 3 0x100092 kqread dhcpleased 96850 110055 1 0 3 0x80 kqread dhcpleased 84260 97345 0 0 3 0x14200 bored smr 50592 441677 0 0 2 0x14200 zerothread 61094 410551 0 0 3 0x14200 aiodoned aiodoned 79132 54917 0 0 3 0x14200 syncer update 48906 289359 0 0 3 0x14200 cleaner cleaner 12073 308090 0 0 3 0x14200 reaper reaper 82585 281545 0 0 3 0x14200 pgdaemon pagedaemon 17516 351102 0 0 3 0x14200 bored viomb 34529 347125 0 0 3 0x40014200 acpi0 acpi0 23906 97872 0 0 3 0x14200 bored softnet7 58975 510728 0 0 3 0x14200 bored softnet6 69427 159864 0 0 3 0x14200 bored softnet5 49156 184127 0 0 3 0x14200 bored softnet4 77540 215721 0 0 3 0x14200 bored softnet3 37527 350434 0 0 3 0x14200 bored softnet2 78576 353273 0 0 3 0x14200 bored softnet1 3498 336621 0 0 3 0x14200 bored softnet0 82572 387107 0 0 3 0x14200 bored systqmp 64214 379072 0 0 3 0x14200 bored systq 63519 379494 0 0 3 0x40014200 tmoslp softclock 76718 469104 0 0 3 0x40014200 idle0 1 381680 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 11061K 12401K 166960K 11650 0 pcb 17 12K 12K 166960K 30 0 rtable 205 5K 5K 166960K 259 0 pf 30 12K 13K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 4K 166960K 36 0 iov 0 0K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1423 90K 90K 166960K 1483 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 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 97K 166960K 192 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 124K 166960K 485 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 7 0 in_multi 99 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 43 201K 201K 166960K 43 0 exec 0 0K 1K 166960K 355 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 196 158K 168K 166960K 3195 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 35 70K 96K 166960K 1224 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 11 0K 2K 166960K 27 0 temp 35 8630K 8694K 166960K 7160 0 kqueue 13 20K 24K 166960K 27 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 72 0 69 2 0 2 2 0 8 1 rtentry 136 95 0 1 4 0 4 4 0 8 0 unpcb 144 82 0 64 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 22 0 12 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 101 0 88 2 0 2 2 0 8 0 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 104 16 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 436 0 0 28 0 28 28 0 8 0 art_table 40 437 0 0 5 0 5 5 0 8 0 art_node 32 95 0 11 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1648 0 143 95 0 95 95 0 8 0 ffsino 256 1649 0 143 95 0 95 95 0 8 0 nchpl 144 1922 0 245 63 0 63 63 0 8 0 uvmvnodes 80 1835 0 0 38 0 38 38 0 8 0 vnodes 216 1835 0 0 102 0 102 102 0 8 0 namei 1024 5728 0 5725 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6879 0 6879 8 0 8 8 1 8 8 plimitpl 152 31 0 15 1 0 1 1 0 8 0 sigapl 424 476 0 429 7 0 7 7 0 8 1 knotepl 120 5283 0 5236 10 0 10 10 0 8 8 kqueuepl 184 31 0 21 1 0 1 1 0 8 0 pipepl 304 105 0 78 3 0 3 3 0 8 0 fdescpl 448 456 0 430 5 0 5 5 0 8 1 filepl 120 1707 0 1488 11 0 11 11 0 8 3 lockfpl 104 25 0 23 1 0 1 1 0 8 0 lockfspl 48 13 0 11 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 189 0 177 1 0 1 1 0 8 0 zombiepl 144 431 0 429 1 0 1 1 0 8 0 processpl 1152 476 0 429 5 0 5 5 0 8 1 procpl 664 581 0 530 6 0 6 6 0 8 1 sockpl 552 259 0 225 5 0 5 5 0 8 2 mcl64k 65536 3 0 3 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2514 0 2463 13 0 13 13 0 8 6 mcl2k 2048 230 0 226 3 0 3 3 0 8 2 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 4320 0 4164 13 0 13 13 0 8 1 bufpl 280 2932 0 117 202 0 202 202 0 8 0 anonpl 24 105141 0 102272 44 0 44 44 0 187 22 amapchunkpl 152 9679 0 9309 30 0 30 30 0 158 12 amappl16 200 1890 0 1873 5 0 5 5 0 8 3 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1066 0 1040 2 0 2 2 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 0 1 1 0 8 1 amappl9 144 261 0 260 1 0 1 1 0 8 0 amappl8 136 16 0 15 1 0 1 1 0 8 0 amappl7 128 102 0 92 1 0 1 1 0 8 0 amappl6 120 172 0 169 1 0 1 1 0 8 0 amappl5 112 112 0 106 1 0 1 1 0 8 0 amappl4 104 266 0 249 1 0 1 1 0 8 0 amappl3 96 1560 0 1477 3 0 3 3 0 8 0 amappl2 88 607 0 553 2 0 2 2 0 8 0 amappl1 80 8077 0 7535 13 0 13 13 0 8 1 amappl 88 2553 0 2423 4 0 4 4 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 456 0 430 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 456 0 430 1 0 1 1 0 8 0 vmmpekpl 168 5159 0 5129 2 0 2 2 0 8 0 vmmpepl 168 35064 0 33404 83 0 83 83 0 357 4 vmsppl 368 455 0 430 4 0 4 4 0 8 1 rwobjpl 40 14329 0 11698 27 0 27 27 0 8 0 pdppl 4096 918 0 860 96 30 66 82 0 8 8 pvpl 32 229039 0 221362 110 0 110 110 0 265 38 pmappl 216 455 0 430 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 366 0 30 10 0 10 10 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(ffff800001499d30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149a980) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000389471d0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807e172ea0,1,fffffd8007bfb5b0,ffff80003c996d20) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80758a95a0,ffff80003c996d20) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80758a95a0,ffff80003c996d20) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c996d20) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c996d20,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c996d20,ffff800038947530,ffff800038947480) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038947530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038947530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76066a895050, 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(ffff800001499d30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149a980) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c996d20) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000389471d0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807e172ea0,1,fffffd8007bfb5b0,ffff80003c996d20) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80758a95a0,ffff80003c996d20) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80758a95a0,ffff80003c996d20) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80758a95a0,ffff80003c996d20) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c996d20) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c996d20,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c996d20,ffff800038947530,ffff800038947480) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038947530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038947530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76066a895050, count: -14