Enum polkadot_node_core_pvf::InvalidCandidate

source ·

pub enum InvalidCandidate {
    PrepareError(String),
    WorkerReportedError(String),
    AmbiguousWorkerDeath,
    HardTimeout,
}

Expand description

A description of an error raised during executing a PVF and can be attributed to the combination of the candidate polkadot_parachain::primitives::ValidationParams and the PVF.

Variants§

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PrepareError(String)

PVF preparation ended up with a deterministic error.

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WorkerReportedError(String)

The failure is reported by the execution worker. The string contains the error message.

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AmbiguousWorkerDeath

The worker has died during validation of a candidate. That may fall in one of the following categories, which we cannot distinguish programmatically:

(a) Some sort of transient glitch caused the worker process to abort. An example would be that the host machine ran out of free memory and the OOM killer started killing the processes, and in order to save the parent it will “sacrifice child” first.

(b) The candidate triggered a code path that has lead to the process death. For example, the PVF found a way to consume unbounded amount of resources and then it either exceeded an rlimit (if set) or, again, invited OOM killer. Another possibility is a bug in wasmtime allowed the PVF to gain control over the execution worker.

We attribute such an event to an invalid candidate in either case.

The rationale for this is that a glitch may lead to unfair rejecting candidate by a single validator. If the glitch is somewhat more persistent the validator will reject all candidate thrown at it and hopefully the operator notices it by decreased reward performance of the validator. On the other hand, if the worker died because of (b) we would have better chances to stop the attack.

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HardTimeout

PVF execution (compilation is not included) took more time than was allotted.

Enum polkadot_node_core_pvf::InvalidCandidate

Variants§

PrepareError(String)

WorkerReportedError(String)

AmbiguousWorkerDeath

HardTimeout

Trait Implementations§

impl Clone for InvalidCandidate

fn clone(&self) -> InvalidCandidate

fn clone_from(&mut self, source: &Self)

impl Debug for InvalidCandidate

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations§

impl RefUnwindSafe for InvalidCandidate

impl Send for InvalidCandidate

impl Sync for InvalidCandidate

impl Unpin for InvalidCandidate

impl UnwindSafe for InvalidCandidate

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> CheckedConversion for T

fn checked_from<T>(t: T) -> Option<Self>where Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T>where Self: TryInto<T>,

impl<T> Conv for T

fn conv<T>(self) -> Twhere Self: Into<T>,

impl<T> Downcast for Twhere T: Any,

fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

fn as_any(&self) -> &(dyn Any + 'static)

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

impl<T> DowncastSync for Twhere T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync + 'static>

impl<T> DynClone for Twhere T: Clone,

fn __clone_box(&self, _: Private) -> *mut ()

impl<T> FmtForward for T

fn fmt_binary(self) -> FmtBinary<Self>where Self: Binary,

fn fmt_display(self) -> FmtDisplay<Self>where Self: Display,

fn fmt_lower_exp(self) -> FmtLowerExp<Self>where Self: LowerExp,

fn fmt_lower_hex(self) -> FmtLowerHex<Self>where Self: LowerHex,

fn fmt_octal(self) -> FmtOctal<Self>where Self: Octal,

fn fmt_pointer(self) -> FmtPointer<Self>where Self: Pointer,

fn fmt_upper_exp(self) -> FmtUpperExp<Self>where Self: UpperExp,

fn fmt_upper_hex(self) -> FmtUpperHex<Self>where Self: UpperHex,

fn fmt_list(self) -> FmtList<Self>where &'a Self: for<'a> IntoIterator,

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> IsType<T> for T

fn from_ref(t: &T) -> &T

fn into_ref(&self) -> &T

fn from_mut(t: &mut T) -> &mut T

fn into_mut(&mut self) -> &mut T

impl<T, Outer> IsWrappedBy<Outer> for Twhere Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

fn from_ref(outer: &Outer) -> &T

fn from_mut(outer: &mut Outer) -> &mut T

impl<T> Pipe for Twhere T: ?Sized,

fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere Self: Sized,

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere R: 'a,

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere R: 'a,

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> Rwhere Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R) -> Rwhere Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> Rwhere Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> Rwhere Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> Rwhere Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

fn pipe_deref_mut<'a, T, R>(&'a mut self, func: impl FnOnce(&'a mut T) -> R) -> Rwhere Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

type Init = T

impl<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

fn checked_from<T>(t: T) -> Option<Self>where
Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T>where
Self: TryInto<T>,

fn conv<T>(self) -> Twhere
Self: Into<T>,

impl<T> Downcast for Twhere
T: Any,

impl<T> DowncastSync for Twhere
T: Any + Send + Sync,

impl<T> DynClone for Twhere
T: Clone,

fn fmt_binary(self) -> FmtBinary<Self>where
Self: Binary,

fn fmt_display(self) -> FmtDisplay<Self>where
Self: Display,

fn fmt_lower_exp(self) -> FmtLowerExp<Self>where
Self: LowerExp,

fn fmt_lower_hex(self) -> FmtLowerHex<Self>where
Self: LowerHex,

fn fmt_octal(self) -> FmtOctal<Self>where
Self: Octal,

fn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,

fn fmt_upper_exp(self) -> FmtUpperExp<Self>where
Self: UpperExp,

fn fmt_upper_hex(self) -> FmtUpperHex<Self>where
Self: UpperHex,

fn fmt_list(self) -> FmtList<Self>where
&'a Self: for<'a> IntoIterator,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T, Outer> IsWrappedBy<Outer> for Twhere
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

impl<T> Pipe for Twhere
T: ?Sized,

fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
Self: Sized,

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere
R: 'a,

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere
R: 'a,

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> Rwhere
Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,

fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> Rwhere
Self: BorrowMut<B>,
B: 'a + ?Sized,
R: 'a,

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> Rwhere
Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> Rwhere
Self: AsMut<U>,
U: 'a + ?Sized,
R: 'a,

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> Rwhere
Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,

fn pipe_deref_mut<'a, T, R>(&'a mut self, func: impl FnOnce(&'a mut T) -> R) -> Rwhere
Self: DerefMut<Target = T> + Deref,
T: 'a + ?Sized,
R: 'a,

fn saturated_from<T>(t: T) -> Selfwhere
Self: UniqueSaturatedFrom<T>,

fn saturated_into<T>(self) -> Twhere
Self: UniqueSaturatedInto<T>,

fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Selfwhere
Self: Borrow<B>,
B: ?Sized,

fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Selfwhere
Self: BorrowMut<B>,
B: ?Sized,

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Selfwhere
Self: AsRef<R>,
R: ?Sized,

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Selfwhere
Self: AsMut<R>,
R: ?Sized,

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Selfwhere
Self: Deref<Target = T>,
T: ?Sized,

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Selfwhere
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Selfwhere
Self: Borrow<B>,
B: ?Sized,

fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Selfwhere
Self: BorrowMut<B>,
B: ?Sized,

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Selfwhere
Self: AsRef<R>,
R: ?Sized,

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Selfwhere
Self: AsMut<R>,
R: ?Sized,

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Selfwhere
Self: Deref<Target = T>,
T: ?Sized,

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Selfwhere
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

impl<T> ToOwned for Twhere
T: Clone,

fn try_conv<T>(self) -> Result<T, Self::Error>where
Self: TryInto<T>,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

impl<S, T> UncheckedInto<T> for Swhere
T: UncheckedFrom<S>,

impl<T, S> UniqueSaturatedInto<T> for Swhere
T: Bounded,
S: TryInto<T>,

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where
S: Into<Dispatch>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where
S: Into<Dispatch>,

impl<T> MaybeDebug for Twhere
T: Debug,

impl<T> MaybeDebug for Twhere
T: Debug,

impl<T> MaybeRefUnwindSafe for Twhere
T: RefUnwindSafe,

impl<T> MaybeSend for Twhere
T: Send,