syzbot

uvm_fault(0xffffffff83a5cdf8, 0xffff800029ee5000, 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
*268754   1193      0           0  0x4000000    0  syz-executor
pvclock_get(ffffffff83928750) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff83928750) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nanouptime(ffff80003c8ff290) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline]
nanouptime(ffff80003c8ff290) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline]
nanouptime(ffff80003c8ff290) at nanouptime+0x61 sys/kern/kern_tc.c:217
clock_gettime(ffff80003c90afb8,3,ffff80003c8ff290) at clock_gettime+0xab sys/kern/kern_time.c:129
sys_clock_gettime(ffff80003c90afb8,ffff80003c8ff3b0,ffff80003c8ff300) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173
syscall(ffff80003c8ff3b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c8ff3b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x903c5d0f690, count: 9
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