syzbot

panic: softclock: invalid to_clock: 963011939
Starting stack trace...
panic(ffffffff8285e93b) at panic+0x16f sys/kern/subr_prf.c:229
softclock(0) at softclock+0x22d sys/kern/kern_timeout.c:759
softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:590 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158
uvm_pagelookup(fffffd80721938d8,4306d859000) at uvm_pagelookup+0x8d sys/uvm/uvm_page.c:1218
uvn_flush(fffffd80721938d8,0,0,19) at uvn_flush+0x12b sys/uvm/uvm_vnode.c:636
uvn_detach(fffffd80721938d8) at uvn_detach+0x94 sys/uvm/uvm_vnode.c:360
uvm_vnp_uncache(fffffd8066582440) at uvm_vnp_uncache+0x108 sys/uvm/uvm_vnode.c:1418
dounlinkat(ffff80002a1491f8,37,c0006ea340,0) at dounlinkat+0xf6 sys/kern/vfs_syscalls.c:1892
syscall(ffff80002a1fdfd0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002a1fdfd0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2e3e9ddb0, count: 245
End of stack trace.