uvm_fault(0xffffffff839d4af0, 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 * 27097 37404 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff800035cd3b00) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff80002f0c1ca0,3,ffff800035cd3b00) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff80002f0c1ca0,ffff800035cd3c20,ffff800035cd3b70) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff800035cd3c20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035cd3c20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfc9a3dcd680, 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(0xffffffff839d4af0, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff800035cd3b00) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff80002f0c1ca0,3,ffff800035cd3b00) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff80002f0c1ca0,ffff800035cd3c20,ffff800035cd3b70) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff800035cd3c20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035cd3c20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfc9a3dcd680, count: -6 ddb> show registers rdi 0xffff80002ccba000 rsi 0x4cda2 acpi_pdirpa+0x38c13 rbp 0xffff800035cd39d0 rbx 0xffffffff838fd3d0 th0 rdx 0xffff80002ccba000 rcx 0x4cda1 acpi_pdirpa+0x38c12 rax 0 r8 0xffffffff822685f0 uvm_map_inentry_sp r9 0 r10 0 r11 0xe1e82edb1ea5120e r12 0x3 r13 0x1d67 __ALIGN_SIZE+0xd67 r14 0xffffffff83886df0 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff81d9dbb3 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035cd3980 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=27097 pid=37404 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=0xffff80002f0c0a78,0xffffffff83991910 process=0xffff8000ffffb198 user=0xffff800035cce000, vmspace=0xfffffd8063fcb468 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37404 172844 24216 0 2 0 syz-executor *37404 27097 24216 0 7 0x4000000 syz-executor 2129 418921 84324 0 2 0x10 syz-executor 2129 108604 84324 0 3 0x4000090 fifor syz-executor 53639 383654 0 0 3 0x14200 acct acct 60155 84160 31170 0 3 0x82 piperd syz-executor 84324 12386 31170 0 3 0x82 nanoslp syz-executor 89368 37003 31170 0 3 0x82 piperd syz-executor 66265 352865 31170 0 3 0x82 wait syz-executor 78641 175266 31170 0 3 0x82 piperd syz-executor 44089 477872 31170 0 3 0x82 piperd syz-executor 51195 148120 31170 0 3 0x82 piperd syz-executor 24216 122500 31170 0 3 0x82 nanoslp syz-executor 31170 249765 1 0 2 0x2 syz-executor 62822 32502 20619 0 3 0x98 kqread sshd-session 20619 48773 3126 0 3 0x92 kqread sshd-session 27718 200901 1 0 3 0x100083 ttyopn getty 3126 399585 1 0 3 0x88 kqread sshd 37106 225658 15507 73 3 0x1100090 kqread syslogd 15507 96263 1 0 3 0x100082 sbwait syslogd 69309 480720 1 0 3 0x100080 kqread resolvd 71622 34414 38380 77 3 0x100092 kqread dhcpleased 91484 215799 38380 77 3 0x100092 kqread dhcpleased 38380 393159 1 0 3 0x80 kqread dhcpleased 11481 445983 0 0 3 0x14200 bored smr 31991 433177 0 0 2 0x14200 zerothread 15922 445168 0 0 3 0x14200 aiodoned aiodoned 92609 104385 0 0 3 0x14200 syncer update 67375 185200 0 0 3 0x14200 cleaner cleaner 77623 180534 0 0 3 0x14200 reaper reaper 72932 442468 0 0 3 0x14200 pgdaemon pagedaemon 21745 195319 0 0 3 0x14200 bored viomb 15447 135010 0 0 3 0x40014200 acpi0 acpi0 94220 119111 0 0 3 0x14200 bored softnet0 86591 263558 0 0 3 0x14200 bored systqmp 18182 447468 0 0 3 0x14200 bored systq 44687 78791 0 0 3 0x40014200 tmoslp softclock 59088 32658 0 0 3 0x40014200 idle0 1 482905 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 11035 12170K 12681K 166960K 15846 0 pcb 17 16K 17K 166960K 337 0 rtable 152 7K 10K 166960K 727 0 pf 28 13K 21K 166960K 489 0 ifaddr 25 5K 8K 166960K 141 0 ifgroup 34 1K 2K 166960K 250 0 sysctl 4 1K 9K 166960K 15 0 counters 29 17K 18K 166960K 134 0 ioctlops 0 0K 4K 166960K 593 0 iov 0 0K 16K 166960K 138 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1445 91K 92K 166960K 3818 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 36 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 107 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 13 45K 97K 166960K 2174 0 sigio 0 0K 0K 166960K 22 0 proc 60 59K 124K 166960K 674 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 376 0 in_multi 45 3K 7K 166960K 257 0 ether_multi 1 0K 0K 166960K 37 0 mrt 2 0K 0K 166960K 27 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 607 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 191 143K 168K 166960K 19832 0 UVM aobj 57 3K 4K 166960K 62 0 pinsyscall 33 66K 96K 166960K 3373 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 154 0 NDP 7 0K 2K 166960K 96 0 temp 77 9076K 9140K 166960K 176845 0 kqueue 13 20K 31K 166960K 408 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 120 186 0 183 1 0 1 1 0 8 0 rtentry 136 197 0 144 4 0 4 4 0 8 0 unpcb 144 1015 0 998 9 5 4 6 0 8 3 syncache 336 11 0 11 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 580 0 575 3 1 2 2 0 8 1 arp 96 29 0 18 1 0 1 1 0 8 0 ipq 40 13 0 7 1 0 1 1 0 8 0 ipqe 40 29 0 23 1 0 1 1 0 8 0 inpcb 328 1616 0 1608 8 6 2 7 0 8 1 ip6q 72 4 0 1 1 0 1 1 0 8 0 ip6af 40 7 0 2 1 0 1 1 0 8 0 nd6 112 42 0 29 1 0 1 1 0 8 0 pkpcb 40 13 0 13 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 3 0 3 2 1 1 1 0 8 1 ppxss 1072 73 0 73 1 0 1 1 0 8 1 pppxif 1416 14 0 14 2 1 1 1 0 8 1 pfstscr 40 4 0 3 2 1 1 1 0 8 0 pfrktable 1344 4 0 2 1 0 1 1 0 8 0 pfsrclim 320 4 0 3 1 0 1 1 0 8 0 pfanchor 1288 10 0 0 1 0 1 1 0 8 0 pftag 88 8 0 1 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 6 0 0 1 0 1 1 0 8 0 pfstkey 128 37 0 31 1 0 1 1 0 8 0 pfstate 384 19 0 16 1 0 1 1 0 8 0 pfrule 1360 23 0 22 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 786 0 548 35 11 24 33 0 8 7 art_table 40 790 0 548 6 0 6 6 0 8 1 art_node 32 187 0 142 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 104 0 94 1 0 1 1 0 8 0 shmpl 112 59 0 5 2 0 2 2 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 5085 0 3628 92 0 92 92 0 8 0 ffsino 256 5085 0 3628 92 0 92 92 0 8 0 nchpl 144 7788 0 6093 64 0 64 64 0 8 0 rtmask 32 13 0 13 2 1 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 25068 0 25068 2 1 1 2 0 8 1 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 148 0 134 2 0 2 2 0 8 0 scsiplug 72 8 0 8 2 1 1 1 0 8 1 scxspl 216 30108 0 30108 15 7 8 8 1 8 8 plimitpl 152 276 0 260 1 0 1 1 0 8 0 sigapl 424 2468 0 2430 6 1 5 6 0 8 0 knotepl 120 417727 0 417680 58 48 10 24 0 8 8 kqueuepl 184 913 0 904 10 3 7 7 0 8 6 pipepl 304 192 0 165 3 0 3 3 0 8 0 fdescpl 448 2454 0 2430 5 1 4 5 0 8 0 filepl 120 13434 0 13222 16 5 11 14 0 8 2 lockfpl 104 932 0 929 2 1 1 2 0 8 0 lockfspl 48 443 0 440 1 0 1 1 0 8 0 sessionpl 144 264 0 256 1 0 1 1 0 8 0 pgrppl 48 312 0 296 1 0 1 1 0 8 0 ucredpl 104 2805 0 2792 1 0 1 1 0 8 0 zombiepl 144 2431 0 2430 1 0 1 1 0 8 0 processpl 1152 2468 0 2430 4 0 4 4 0 8 0 procpl 664 4893 0 4853 6 1 5 6 0 8 0 sosppl 176 52 0 52 2 1 1 1 0 8 1 sockpl 552 2868 0 2840 22 14 8 17 0 8 5 mcl64k 65536 307 0 306 1 0 1 1 0 8 0 mcl16k 16384 183 0 183 1 0 1 1 0 8 1 mcl12k 12288 42 0 42 2 1 1 1 0 8 1 mcl9k 9216 15 0 15 2 1 1 1 0 8 1 mcl8k 8192 126 0 126 2 1 1 1 0 8 1 mcl4k 4096 6036 0 5982 13 5 8 12 0 8 1 mcl2k2 2112 14 0 14 1 1 0 1 0 8 0 mcl2k 2048 1642 0 1636 5 2 3 3 0 8 1 mtagpl 96 119 0 78 2 0 2 2 0 8 0 mbufpl 256 26165 0 25958 25 4 21 22 0 8 3 bufpl 280 11965 0 5751 444 0 444 444 0 8 0 anonpl 24 258620 0 250089 82 7 75 82 0 187 0 amapchunkpl 152 65198 0 64763 39 7 32 32 0 158 8 amappl16 200 3819 0 3544 27 0 27 27 0 8 0 amappl14 184 443 0 442 1 0 1 1 0 8 0 amappl13 176 123 0 113 1 0 1 1 0 8 0 amappl12 168 2700 0 2677 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 1 0 1 0 8 0 amappl10 152 54 0 44 1 0 1 1 0 8 0 amappl9 144 302 0 302 1 1 0 1 0 8 0 amappl8 136 106 0 104 1 0 1 1 0 8 0 amappl7 128 147 0 135 1 0 1 1 0 8 0 amappl6 120 174 0 173 1 0 1 1 0 8 0 amappl5 112 92 0 84 1 0 1 1 0 8 0 amappl4 104 276 0 260 1 0 1 1 0 8 0 amappl3 96 14246 0 14169 5 1 4 4 0 8 0 amappl2 88 571 0 515 2 0 2 2 0 8 0 amappl1 80 19344 0 18811 16 3 13 16 0 8 0 amappl 88 18829 0 18701 5 0 5 5 0 92 0 uvmvnodes 80 150 0 0 4 0 4 4 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 9 0 9 2 1 1 1 0 8 1 dma128 128 257 0 257 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 61 0 5 2 0 2 2 0 8 0 uaddrrnd 24 2454 0 2430 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2454 0 2430 1 0 1 1 0 8 0 vmmpekpl 168 17262 0 17216 3 0 3 3 0 8 0 vmmpepl 168 152316 0 150512 104 5 99 102 0 357 3 vmsppl 368 2453 0 2430 4 1 3 4 0 8 0 rwobjpl 40 35426 0 34172 16 0 16 16 0 8 0 pdppl 4096 4914 0 4860 122 58 64 82 0 8 10 pvpl 32 1033389 0 1019362 198 21 177 177 0 265 18 pmappl 216 2453 0 2430 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 419 0 89 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff800035cd3b00) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff80002f0c1ca0,3,ffff800035cd3b00) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff80002f0c1ca0,ffff800035cd3c20,ffff800035cd3b70) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff800035cd3c20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035cd3c20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfc9a3dcd680, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff800035cd3b00) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff800035cd3b00) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff80002f0c1ca0,3,ffff800035cd3b00) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff80002f0c1ca0,ffff800035cd3c20,ffff800035cd3b70) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff800035cd3c20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035cd3c20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfc9a3dcd680, count: -6