uvm_fault(0xffffffff83933440, 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
* 75003  87046      0           0  0x4000000    0  syz-executor
pvclock_get(ffffffff8386b9c0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff8386b9c0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline]
nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline]
nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257
clockintr_dispatch(ffff80003c8f1890) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180
lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482
Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a
pmap_tlb_shootrange(ffff8000314c8000,ffff800029bb2000,ffff80002a25e000,1) at pmap_tlb_shootrange+0xc3 invpcid sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:192 [inline]
pmap_tlb_shootrange(ffff8000314c8000,ffff800029bb2000,ffff80002a25e000,1) at pmap_tlb_shootrange+0xc3 sys/arch/amd64/amd64/pmap.c:3363
buf_dealloc_mem(fffffd807c3f77e8) at buf_dealloc_mem+0x125 sys/kern/vfs_biomem.c:186
buf_put(fffffd807c3f77e8) at buf_put+0x1d9 sys/kern/vfs_bio.c:123
brelse(fffffd807c3f77e8) at brelse+0x397 sys/kern/vfs_bio.c:932
writedisklabel(d02,ffffffff81c5bc10,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158
sdioctl(d02,84946467,ffff8000015db000,3,ffff80003c90ad18) at sdioctl+0x959 sys/scsi/sd.c:921
VOP_IOCTL(fffffd806f9a01d8,84946467,ffff8000015db000,3,fffffd8007ffd958,ffff80003c90ad18) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807c1dcc38,84946467,ffff8000015db000,ffff80003c90ad18) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c90ad18,ffff80003c8f1f10,ffff80003c8f1e60) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
end trace frame: 0xffff80003c8f1f00, count: 0
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(0xffffffff83933440, 0xffff800029ef5000, 0, 1) -> e
ddb> trace
pvclock_get(ffffffff8386b9c0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff8386b9c0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline]
nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline]
nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257
clockintr_dispatch(ffff80003c8f1890) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180
lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482
Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a
pmap_tlb_shootrange(ffff8000314c8000,ffff800029bb2000,ffff80002a25e000,1) at pmap_tlb_shootrange+0xc3 invpcid sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:192 [inline]
pmap_tlb_shootrange(ffff8000314c8000,ffff800029bb2000,ffff80002a25e000,1) at pmap_tlb_shootrange+0xc3 sys/arch/amd64/amd64/pmap.c:3363
buf_dealloc_mem(fffffd807c3f77e8) at buf_dealloc_mem+0x125 sys/kern/vfs_biomem.c:186
buf_put(fffffd807c3f77e8) at buf_put+0x1d9 sys/kern/vfs_bio.c:123
brelse(fffffd807c3f77e8) at brelse+0x397 sys/kern/vfs_bio.c:932
writedisklabel(d02,ffffffff81c5bc10,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158
sdioctl(d02,84946467,ffff8000015db000,3,ffff80003c90ad18) at sdioctl+0x959 sys/scsi/sd.c:921
VOP_IOCTL(fffffd806f9a01d8,84946467,ffff8000015db000,3,fffffd8007ffd958,ffff80003c90ad18) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807c1dcc38,84946467,ffff8000015db000,ffff80003c90ad18) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c90ad18,ffff80003c8f1f10,ffff80003c8f1e60) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c8f1f10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c8f1f10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d2c94a1e20, count: -16
ddb>