uvm_fault(0xffffffff839b9bc0, 0xffff800029f25000, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pvclock_get+83: movl 0(%r15),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND *229355 38117 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff838739a0) at pvclock_get+83 nanouptime(ffff80002ed1bd80) at nanouptime+97 clock_gettime(ffff80002a7b1240,3,ffff80002ed1bd80) at clock_gettime+171 sys_clock_gettime(ffff80002a7b1240,ffff80002ed1bea0,ffff80002ed1bdf0) at sys_clock_gettime+87 syscall(ffff80002ed1bea0) at syscall+2402 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xbbc3fefb200, count: 9 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(0xffffffff839b9bc0, 0xffff800029f25000, 0, 1) -> e ddb> trace pvclock_get(ffffffff838739a0) at pvclock_get+83 nanouptime(ffff80002ed1bd80) at nanouptime+97 clock_gettime(ffff80002a7b1240,3,ffff80002ed1bd80) at clock_gettime+171 sys_clock_gettime(ffff80002a7b1240,ffff80002ed1bea0,ffff80002ed1bdf0) at sys_clock_gettime+87 syscall(ffff80002ed1bea0) at syscall+2402 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xbbc3fefb200, count: -6 ddb> show registers rdi 18446603336972967936 rsi 211744 acpi_pdirpa+129425 rbp 18446603337006693456 rbx 18446744071621074056 th1 rdx 18446603336972967936 rcx 211743 acpi_pdirpa+129424 rax 0 r8 18446744071610483760 uvm_map_inentry_sp r9 1 r10 0 r11 17813562323508626023 r12 3 r13 6810 __ALIGN_SIZE+2714 r14 18446744071621261728 pvclock_timecounter r15 18446603336924942336 rip 18446744071614991027 pvclock_get+83 cs 8 rflags 66118 __ALIGN_SIZE+62022 rsp 18446603337006693376 ss 16 pvclock_get+83: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=229355 pid=38117 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7b07e0,0xffffffff8395f738 process=0xffff80002a7dd690 user=0xffff80002ed16000, vmspace=0xfffffd80723d2a28 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 38117 464358 14559 0 2 0 syz-executor *38117 229355 14559 0 7 0x4000000 syz-executor 56029 508888 13304 0 2 0 syz-executor 56029 249172 13304 0 3 0x4000080 fsleep syz-executor 31742 497475 98754 0 3 0x80 nanoslp syz-executor 31742 468275 98754 0 3 0x4000080 kqsel syz-executor 31742 519249 98754 0 3 0x4000080 fsleep syz-executor 31742 501788 98754 0 3 0x4000080 fsleep syz-executor 89578 80423 73676 0 2 0 syz-executor 89578 54649 73676 0 3 0x4000080 fsleep syz-executor 89578 55536 73676 0 3 0x4000080 fsleep syz-executor 39186 160750 36696 0 2 0 syz-executor 39186 294191 36696 0 3 0x4000080 ttyout syz-executor 39186 209326 36696 0 3 0x4000080 kqread syz-executor 66784 245325 33903 0 2 0 syz-executor 66784 465554 33903 0 3 0x4000080 fsleep syz-executor 66812 430825 43881 0 3 0x80 nanoslp syz-executor 66812 488481 43881 0 3 0x4000080 kqsel syz-executor 66812 256360 43881 0 3 0x4000080 fsleep syz-executor 98754 476518 78298 0 3 0x82 nanoslp syz-executor 13304 472525 78298 0 3 0x82 nanoslp syz-executor 14559 187355 78298 0 3 0x82 nanoslp syz-executor 8176 118038 1 0 3 0x100083 ttyin getty 36069 82578 78298 0 3 0x82 wait syz-executor 36696 200555 78298 0 3 0x82 nanoslp syz-executor 11764 454740 0 0 3 0x14280 nfsidl nfsio 31045 398564 0 0 3 0x14280 nfsidl nfsio 17837 321023 0 0 3 0x14280 nfsidl nfsio 89467 140548 0 0 3 0x14280 nfsidl nfsio 22019 116979 0 0 3 0x14280 nfsidl nfsio 19518 125354 0 0 3 0x14280 nfsidl nfsio 23069 501645 0 0 3 0x14280 nfsidl nfsio 54474 481511 0 0 3 0x14280 nfsidl nfsio 18284 160563 0 0 3 0x14280 nfsidl nfsio 26686 251675 0 0 3 0x14280 nfsidl nfsio 79359 260806 0 0 3 0x14280 nfsidl nfsio 66653 495442 0 0 3 0x14280 nfsidl nfsio 88508 236068 0 0 3 0x14280 nfsidl nfsio 37668 226076 0 0 3 0x14280 nfsidl nfsio 36421 18892 0 0 3 0x14280 nfsidl nfsio 79472 67862 0 0 3 0x14280 nfsidl nfsio 88378 181730 0 0 3 0x14280 nfsidl nfsio 9491 50445 0 0 3 0x14280 nfsidl nfsio 38958 363855 0 0 3 0x14280 nfsidl nfsio 18075 58398 0 0 3 0x14280 nfsidl nfsio 33903 394302 78298 0 3 0x82 nanoslp syz-executor 43881 220708 78298 0 3 0x82 nanoslp syz-executor 73676 347193 78298 0 3 0x82 nanoslp syz-executor 78298 2795 77360 0 3 0x82 kqread syz-executor 77360 417723 16276 0 3 0x10008a sigsusp ksh 16276 394983 36839 0 3 0x98 kqread sshd-session 36839 2216 3378 0 3 0x92 kqread sshd-session 3378 192937 1 0 3 0x88 kqread sshd 22168 391096 10144 73 3 0x1100090 kqread syslogd 10144 147083 1 0 3 0x100082 sbwait syslogd 58308 521129 1 0 3 0x100080 kqread resolvd 19872 223379 8599 77 3 0x100092 kqread dhcpleased 88406 168999 8599 77 3 0x100092 kqread dhcpleased 8599 99298 1 0 3 0x80 kqread dhcpleased 74456 450484 0 0 3 0x14200 bored smr 34620 403623 0 0 2 0x14200 zerothread 84346 80514 0 0 3 0x14200 aiodoned aiodoned 91571 293930 0 0 3 0x14200 syncer update 40638 219579 0 0 3 0x14200 cleaner cleaner 7059 301205 0 0 3 0x14200 reaper reaper 61074 330970 0 0 3 0x14200 pgdaemon pagedaemon 83413 513863 0 0 3 0x14200 bored viomb 14297 123892 0 0 3 0x40014200 acpi0 acpi0 43566 305588 0 0 3 0x14200 bored softnet0 43740 189056 0 0 3 0x14200 bored systqmp 91462 175095 0 0 3 0x14200 bored systq 31135 384491 0 0 3 0x40014200 tmoslp softclock 95641 458684 0 0 3 0x40014200 idle0 1 302830 0 0 3 0x80082 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 11121K 11656K 166960K 13806 0 pcb 21 16K 17K 166960K 507 0 rtable 208 9K 9K 166960K 727 0 pf 26 12K 14K 166960K 136 0 ifaddr 35 6K 8K 166960K 128 0 ifgroup 42 1K 2K 166960K 197 0 sysctl 4 1K 9K 166960K 15 0 counters 31 17K 18K 166960K 106 0 ioctlops 0 0K 4K 166960K 428 0 iov 0 0K 38K 166960K 110 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1487 93K 93K 166960K 2474 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 103 0 dirhash 87 15K 16K 166960K 1761 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1472 0 sigio 0 0K 0K 166960K 19 0 proc 61 59K 91K 166960K 780 0 subproc 72 4K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 256 0 in_multi 79 5K 7K 166960K 232 0 ether_multi 1 0K 0K 166960K 15 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 677 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 238 153K 173K 166960K 13908 0 UVM aobj 31 10K 10K 166960K 49 0 pinsyscall 39 78K 94K 166960K 2719 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 96 0 NDP 9 0K 2K 166960K 87 0 temp 74 8670K 8742K 166960K 48106 0 kqueue 15 24K 30K 166960K 253 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 120 205 0 201 3 0 3 3 0 8 2 rtentry 136 219 0 141 4 0 4 4 0 8 0 unpcb 144 1512 0 1496 11 2 9 11 0 8 8 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 699 0 693 7 0 7 7 0 8 6 arp 96 34 0 20 1 0 1 1 0 8 0 ipq 40 4 0 3 1 0 1 1 0 8 0 ipqe 40 7 0 6 1 0 1 1 0 8 0 inpcb 328 1744 0 1731 10 1 9 10 0 8 7 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 1 0 1 1 0 8 0 nd6 112 49 0 32 1 0 1 1 0 8 0 pkpcb 40 9 0 8 1 0 1 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 6 0 6 1 0 1 1 0 8 1 ppxss 1072 53 0 53 1 0 1 1 0 8 1 pppxif 1384 9 0 9 1 0 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 958 0 601 33 3 30 33 0 8 7 art_table 40 961 0 601 6 0 6 6 0 8 0 art_node 32 215 0 144 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 100 0 90 1 0 1 1 0 8 0 shmpl 112 41 0 17 1 0 1 1 0 8 0 dirhash 1024 601 0 559 6 0 6 6 0 8 0 dino2pl 256 3877 0 2362 95 0 95 95 0 8 0 ffsino 256 3877 0 2362 95 0 95 95 0 8 0 nchpl 144 5782 0 4071 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 0 1 1 0 8 1 vnodes 216 4614 0 0 257 0 257 257 0 8 0 namei 1024 21152 0 21152 1 0 1 1 0 8 1 vcpupl 3904 4 0 0 1 0 1 1 0 8 0 vmpool 800 5 0 1 1 0 1 1 0 8 0 kstatmem 264 114 0 96 2 0 2 2 0 8 0 scsiplug 72 9 0 9 1 0 1 1 0 8 1 scxspl 216 18419 0 18419 8 0 8 8 1 8 8 plimitpl 152 432 0 414 1 0 1 1 0 8 0 sigapl 424 1745 0 1682 8 0 8 8 0 8 0 knotepl 120 53834 0 53781 16 6 10 16 0 8 8 kqueuepl 184 719 0 706 4 0 4 4 0 8 3 pipepl 304 309 0 281 3 0 3 3 0 8 0 fdescpl 448 1710 0 1680 5 0 5 5 0 8 1 filepl 120 11837 0 11611 17 0 17 17 0 8 8 lockfpl 104 547 0 544 1 0 1 1 0 8 0 lockfspl 48 173 0 170 1 0 1 1 0 8 0 sessionpl 144 31 0 23 1 0 1 1 0 8 0 pgrppl 48 92 0 75 1 0 1 1 0 8 0 ucredpl 104 1642 0 1631 1 0 1 1 0 8 0 zombiepl 144 1683 0 1682 1 0 1 1 0 8 0 processpl 1152 1745 0 1682 5 0 5 5 0 8 0 procpl 664 3568 0 3493 7 0 7 7 0 8 0 sosppl 176 11 0 11 1 0 1 1 0 8 1 sockpl 552 3504 0 3470 29 19 10 26 0 8 7 mcl64k 65536 92 0 91 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 5 0 5 1 0 1 1 0 8 1 mcl8k 8192 85 0 85 1 0 1 1 0 8 1 mcl4k 4096 4118 0 4065 14 0 14 14 0 8 6 mcl2k 2048 2153 0 2145 5 0 5 5 0 8 4 mtagpl 96 41 0 23 1 0 1 1 0 8 0 mbufpl 256 18146 0 18012 19 0 19 19 0 8 4 bufpl 280 6838 0 617 445 0 445 445 0 8 0 anonpl 24 236242 0 232958 51 0 51 51 0 187 25 amapchunkpl 152 47689 0 46994 34 0 34 34 0 158 7 amappl16 200 3787 0 3752 25 14 11 15 0 8 8 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 2 0 2 1 0 1 1 0 8 1 amappl13 176 491 0 490 1 0 1 1 0 8 0 amappl12 168 2102 0 2063 2 0 2 2 0 8 0 amappl11 160 23 0 23 1 0 1 1 0 8 1 amappl10 152 44 0 33 1 0 1 1 0 8 0 amappl9 144 253 0 253 1 0 1 1 0 8 1 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 104 0 103 1 0 1 1 0 8 0 amappl6 120 372 0 359 1 0 1 1 0 8 0 amappl5 112 97 0 89 1 0 1 1 0 8 0 amappl4 104 429 0 402 1 0 1 1 0 8 0 amappl3 96 9436 0 9326 4 0 4 4 0 8 1 amappl2 88 590 0 536 2 0 2 2 0 8 0 amappl1 80 15133 0 14588 13 0 13 13 0 8 0 amappl 88 12860 0 12691 5 0 5 5 0 92 1 uvmvnodes 80 134 0 0 3 0 3 3 0 8 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 128 257 0 257 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 48 0 18 1 0 1 1 0 8 0 uaddrrnd 24 1710 0 1680 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1710 0 1680 1 0 1 1 0 8 0 vmmpekpl 168 13985 0 13936 3 0 3 3 0 8 0 vmmpepl 168 110989 0 109127 92 0 92 92 0 357 9 vmsppl 368 1709 0 1680 4 0 4 4 0 8 1 rwobjpl 40 28653 0 27630 13 0 13 13 0 8 1 pdppl 4096 3437 0 3366 104 33 71 81 0 8 0 pvpl 32 690021 0 680936 132 0 132 132 0 265 52 pmappl 216 1714 0 1681 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 399 0 36 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff838739a0) at pvclock_get+83 nanouptime(ffff80002ed1bd80) at nanouptime+97 clock_gettime(ffff80002a7b1240,3,ffff80002ed1bd80) at clock_gettime+171 sys_clock_gettime(ffff80002a7b1240,ffff80002ed1bea0,ffff80002ed1bdf0) at sys_clock_gettime+87 syscall(ffff80002ed1bea0) at syscall+2402 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xbbc3fefb200, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff838739a0) at pvclock_get+83 nanouptime(ffff80002ed1bd80) at nanouptime+97 clock_gettime(ffff80002a7b1240,3,ffff80002ed1bd80) at clock_gettime+171 sys_clock_gettime(ffff80002a7b1240,ffff80002ed1bea0,ffff80002ed1bdf0) at sys_clock_gettime+87 syscall(ffff80002ed1bea0) at syscall+2402 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xbbc3fefb200, count: -6