uvm_fault(0xffffffff83934838, 0xffff800029ef5000, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pvclock_get+0x53: movl 0(%r15),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND *203787 59303 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff83910180) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83910180) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff800035cd9a18,3,ffff80003a0ef0c0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff800035cd9a18,ffff80003a0ef1e0,ffff80003a0ef130) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003a0ef1e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a0ef1e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6b545170b40, 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(0xffffffff83934838, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff83910180) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83910180) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff800035cd9a18,3,ffff80003a0ef0c0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff800035cd9a18,ffff80003a0ef1e0,ffff80003a0ef130) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003a0ef1e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a0ef1e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6b545170b40, count: -6 ddb> show registers rdi 0xffff8000384e6000 rsi 0x48a29 acpi_pdirpa+0x3489a rbp 0xffff80003a0eef90 rbx 0xffffffff83827a80 th0 rdx 0xffff8000384e6000 rcx 0x48a28 acpi_pdirpa+0x34899 rax 0 r8 0xffffffff82ae7130 uvm_map_inentry_sp r9 0 r10 0 r11 0xcf47e33cb10ada6e r12 0x3 r13 0x1b0f __ALIGN_SIZE+0xb0f r14 0xffffffff83910180 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff82e00d83 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a0eef40 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=203787 pid=59303 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=68, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800035cd9780,0xffffffff83a255b8 process=0xffff8000ffff8d98 user=0xffff80003a0ea000, vmspace=0xfffffd8073250b98 estcpu=18, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 59303 482287 28321 0 2 0 syz-executor 59303 126749 28321 0 3 0x4000080 rest syz-executor *59303 203787 28321 0 7 0x4000000 syz-executor 59723 266731 470 0 2 0 syz-executor 14539 389640 35831 0 2 0x2 syz-executor 16208 361596 35831 0 2 0x2 syz-executor 470 163594 35831 0 3 0x82 nanoslp syz-executor 18492 225144 35831 0 3 0x82 piperd syz-executor 92644 323362 35831 0 3 0x82 piperd syz-executor 9955 397257 0 0 3 0x14280 nfsidl nfsio 98190 265593 0 0 3 0x14280 nfsidl nfsio 4395 79433 0 0 3 0x14280 nfsidl nfsio 90349 212688 0 0 3 0x14280 nfsidl nfsio 56707 280782 0 0 3 0x14280 nfsidl nfsio 74488 226525 0 0 3 0x14280 nfsidl nfsio 44389 249003 0 0 3 0x14280 nfsidl nfsio 26730 375414 0 0 3 0x14280 nfsidl nfsio 51151 322933 0 0 3 0x14280 nfsidl nfsio 91201 318291 0 0 3 0x14280 nfsidl nfsio 732 442620 0 0 3 0x14280 nfsidl nfsio 26894 405061 0 0 3 0x14280 nfsidl nfsio 22946 485314 0 0 3 0x14280 nfsidl nfsio 44866 225276 0 0 3 0x14280 nfsidl nfsio 43789 190710 0 0 3 0x14280 nfsidl nfsio 21540 364776 0 0 3 0x14280 nfsidl nfsio 98165 129225 0 0 3 0x14280 nfsidl nfsio 64477 43591 0 0 3 0x14280 nfsidl nfsio 7976 192950 0 0 3 0x14280 nfsidl nfsio 91382 219560 0 0 3 0x14280 nfsidl nfsio 28321 381047 35831 0 3 0x82 nanoslp syz-executor 25928 395155 0 0 3 0x14200 acct acct 62114 471853 35831 0 3 0x82 piperd syz-executor 35831 305251 95130 0 2 0x10000002 syz-executor 95130 480266 6059 0 3 0x10008a sigsusp ksh 6059 112151 29336 0 3 0x98 kqread sshd-session 29336 187562 80794 0 3 0x92 kqread sshd-session 51483 61603 1 0 3 0x100083 ttyopn getty 80794 325673 1 0 3 0x88 kqread sshd 933 122250 63997 73 3 0x1100090 kqread syslogd 63997 320493 1 0 3 0x100082 sbwait syslogd 28381 202055 1 0 3 0x100080 kqread resolvd 64742 332466 51591 77 3 0x100092 kqread dhcpleased 90613 524069 51591 77 3 0x100092 kqread dhcpleased 51591 156925 1 0 3 0x80 kqread dhcpleased 65435 438873 0 0 3 0x14200 bored smr 65814 36183 0 0 2 0x14200 zerothread 6540 358218 0 0 3 0x14200 aiodoned aiodoned 57962 284282 0 0 3 0x14200 syncer update 72856 209906 0 0 3 0x14200 cleaner cleaner 63195 253238 0 0 3 0x14200 reaper reaper 71944 396744 0 0 3 0x14200 pgdaemon pagedaemon 21453 29399 0 0 3 0x14200 bored viomb 42197 489215 0 0 3 0x40014200 acpi0 acpi0 67644 214548 0 0 3 0x14200 bored softnet0 98201 376319 0 0 3 0x14200 bored systqmp 45912 469179 0 0 3 0x14200 bored systq 85213 423613 0 0 3 0x40014200 tmoslp softclock 57396 461762 0 0 3 0x40014200 idle0 1 61749 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 11058 12111K 12431K 166960K 13200 0 pcb 17 15K 16K 166960K 214 0 rtable 172 7K 11K 166960K 696 0 pf 30 13K 20K 166960K 184 0 ifaddr 28 5K 7K 166960K 103 0 ifgroup 35 1K 2K 166960K 155 0 sysctl 3 1K 9K 166960K 14 0 counters 30 17K 18K 166960K 109 0 ioctlops 0 0K 4K 166960K 332 0 iov 0 0K 16K 166960K 115 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1412 89K 89K 166960K 2478 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 24K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 75 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 11 34K 236K 166960K 1169 0 sigio 0 0K 0K 166960K 41 0 proc 60 59K 83K 166960K 756 0 subproc 46 2K 4K 166960K 154 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 147 0 in_multi 61 4K 7K 166960K 197 0 ether_multi 1 0K 0K 166960K 11 0 mrt 1 0K 0K 166960K 34 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 509 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 165 125K 161K 166960K 11504 0 UVM aobj 10 2K 2K 166960K 11 0 pinsyscall 32 64K 90K 166960K 2415 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 8 0K 2K 166960K 70 0 temp 43 9070K 9138K 166960K 53222 0 kqueue 13 20K 31K 166960K 218 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 120 168 0 165 3 0 3 3 0 8 2 rtentry 136 205 0 141 4 0 4 4 0 8 0 unpcb 144 556 0 541 4 0 4 4 0 8 3 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 332 0 328 4 0 4 4 0 8 3 arp 96 34 0 21 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 1011 0 1004 7 0 7 7 0 8 6 ip6q 72 4 0 0 1 0 1 1 0 8 0 ip6af 40 5 0 1 1 0 1 1 0 8 0 nd6 112 50 0 35 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 17 0 12 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 59 0 59 1 0 1 1 0 8 1 pppxif 1416 2 0 2 1 0 1 1 0 8 1 pfstscr 40 14 0 8 1 0 1 1 0 8 0 pffrag 232 5 0 2 1 0 1 1 0 482 0 pffrnode 88 5 0 2 1 0 1 1 0 8 0 pffrent 40 9 0 6 1 0 1 1 0 8 0 pfrktable 1344 14 0 14 1 0 1 1 0 8 1 pfsrclim 320 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 12 0 5 1 0 1 1 0 8 0 pftag 88 1 0 1 1 0 1 1 0 8 1 pfstitem 24 10 0 0 1 0 1 1 0 8 0 pfstkey 128 19 0 10 1 0 1 1 0 8 0 pfstate 384 10 0 5 1 0 1 1 0 8 0 pfrule 1360 12 0 12 1 0 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 865 0 550 29 0 29 29 0 8 3 art_table 40 869 0 550 5 0 5 5 0 8 0 art_node 32 203 0 145 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 70 0 60 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3315 0 1844 92 0 92 92 0 8 0 ffsino 256 3315 0 1844 92 0 92 92 0 8 0 nchpl 144 4789 0 3083 64 0 64 64 0 8 0 rtmask 32 5 0 5 1 0 1 1 0 8 1 vnodes 216 4187 0 0 233 0 233 233 0 8 0 namei 1024 16123 0 16123 2 0 2 2 0 8 2 pfiaddrpl 120 4 0 4 1 0 1 1 0 8 1 kstatmem 264 85 0 68 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 20044 0 20044 8 0 8 8 1 8 8 plimitpl 152 250 0 235 1 0 1 1 0 8 0 sigapl 424 1453 0 1395 8 0 8 8 0 8 0 knotepl 120 144203 0 144160 31 19 12 17 0 8 8 kqueuepl 184 369 0 360 4 0 4 4 0 8 3 pipepl 304 231 0 204 3 0 3 3 0 8 0 fdescpl 448 1418 0 1395 4 0 4 4 0 8 0 filepl 120 7922 0 7748 11 0 11 11 0 8 3 lockfpl 104 471 0 469 2 0 2 2 0 8 1 lockfspl 48 183 0 181 1 0 1 1 0 8 0 sessionpl 144 118 0 110 1 0 1 1 0 8 0 pgrppl 48 147 0 131 1 0 1 1 0 8 0 ucredpl 104 1281 0 1270 1 0 1 1 0 8 0 zombiepl 144 1396 0 1395 1 0 1 1 0 8 0 processpl 1152 1453 0 1395 5 0 5 5 0 8 0 procpl 664 2828 0 2768 7 0 7 7 0 8 0 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 552 1780 0 1755 8 0 8 8 0 8 6 mcl64k 65536 79 0 77 1 0 1 1 0 8 0 mcl16k 16384 12 0 12 1 0 1 1 0 8 1 mcl12k 12288 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 17 0 17 1 0 1 1 0 8 1 mcl4k 4096 3829 0 3773 13 0 13 13 0 8 5 mcl2k 2048 963 0 961 2 0 2 2 0 8 1 mtagpl 96 8 0 7 1 0 1 1 0 8 0 mbufpl 256 15115 0 14985 73 53 20 73 0 8 8 bufpl 280 7643 0 1429 444 0 444 444 0 8 0 anonpl 24 256301 0 251134 85 0 85 85 0 187 30 amapchunkpl 152 40802 0 40449 38 0 38 38 0 158 17 amappl16 200 5519 0 5418 61 43 18 32 0 8 8 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 491 0 490 1 0 1 1 0 8 0 amappl13 176 127 0 117 1 0 1 1 0 8 0 amappl12 168 1776 0 1756 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 67 0 56 1 0 1 1 0 8 0 amappl9 144 261 0 261 1 0 1 1 0 8 1 amappl8 136 133 0 131 1 0 1 1 0 8 0 amappl7 128 155 0 144 1 0 1 1 0 8 0 amappl6 120 207 0 206 1 0 1 1 0 8 0 amappl5 112 103 0 95 1 0 1 1 0 8 0 amappl4 104 304 0 285 1 0 1 1 0 8 0 amappl3 96 7689 0 7623 4 0 4 4 0 8 0 amappl2 88 568 0 511 2 0 2 2 0 8 0 amappl1 80 13973 0 13455 15 0 15 15 0 8 2 amappl 88 10530 0 10424 5 0 5 5 0 92 0 uvmvnodes 80 131 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 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 7 0 7 1 0 1 1 0 8 1 dma128 128 256 0 256 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 8 0 8 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1418 0 1395 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1418 0 1395 1 0 1 1 0 8 0 vmmpekpl 168 11832 0 11781 3 0 3 3 0 8 0 vmmpepl 168 97311 0 95797 106 0 106 106 0 357 17 vmsppl 368 1417 0 1395 4 0 4 4 0 8 1 rwobjpl 40 27723 0 26740 16 0 16 16 0 8 1 pdppl 4096 2842 0 2790 100 40 60 76 0 8 8 pvpl 32 680676 0 671275 179 0 179 179 0 265 69 pmappl 216 1417 0 1395 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 432 0 93 12 0 12 12 0 8 1 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff83910180) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83910180) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff800035cd9a18,3,ffff80003a0ef0c0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff800035cd9a18,ffff80003a0ef1e0,ffff80003a0ef130) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003a0ef1e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a0ef1e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6b545170b40, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff83910180) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83910180) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003a0ef0c0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff800035cd9a18,3,ffff80003a0ef0c0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff800035cd9a18,ffff80003a0ef1e0,ffff80003a0ef130) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003a0ef1e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a0ef1e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6b545170b40, count: -6