panic: softclock: invalid to_clock: -2118249109
Starting stack trace...
panic(ffffffff82fe7608) at panic+0x1d0 sys/kern/subr_prf.c:229
softclock(0) at softclock+0x2b6 sys/kern/kern_timeout.c:756
softintr_dispatch(0) at softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x7e8588807af0, count: 253
End of stack trace.
syncing disks...panic: kernel diagnostic assertion "rw_write_held(uobj->vmobjlock)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_vnode.c", line 611
Starting stack trace...
panic(ffffffff830e3969) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309b1bc,ffffffff82fdf238,263,ffffffff8301aa8c) at __assert+0x29
uvn_flush(fffffd806cbc2a70,0,0,31) at uvn_flush+0xdfd sys/uvm/uvm_vnode.c:754
uvm_vnp_sync(ffff800000e5e000) at uvm_vnp_sync+0x1e7 sys/uvm/uvm_vnode.c:1542
sys_sync(ffff80003099d1e0,0,0) at sys_sync+0xd4 sys/kern/vfs_syscalls.c:536
vfs_syncwait(ffff80003099d1e0,1) at vfs_syncwait+0x44
vfs_shutdown(ffff80003099d1e0) at vfs_shutdown+0x97 sys/kern/vfs_subr.c:1791
boot(100) at boot+0x15c sys/arch/amd64/amd64/machdep.c:907
reboot(100) at reboot+0xb1
panic(ffffffff82fe7608) at panic+0x1f9 sys/kern/subr_prf.c:231
softclock(0) at softclock+0x2b6 sys/kern/kern_timeout.c:756
softintr_dispatch(0) at softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x7e8588807af0, count: 244
End of stack trace.

dump to dev 4,1 not possible