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Sign upSIGILL - Intermittent panic in Constellation panics during panic #9387
Comments
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Breaking on rust_panic and getting the backtrace would help identify the cause. |
Breakpoint 1, 0x00005555570e1870 in rust_panic () (gdb) bt #0 0x00005555570e1870 in rust_panic () #1 0x00005555570cde43 in sys_common::unwind::begin_unwind_inner::ha417239bcab1f2ff56s () #2 0x00005555570ce509 in sys_common::unwind::begin_unwind_fmt::hac4637ed0b5bb49eb6s () #3 0x00005555570e1a02 in rust_begin_unwind () #4 0x00005555571189b0 in panicking::panic_fmt::he5f9c513e9167673LnK () #5 0x0000555555864dde in constellation::Constellation$LT$LTF$C$$u20$STF$GT$::handle_request::h10381945729533759561 () #6 0x0000555555850cd8 in export::compositing::constellation::Constellation$LT$LTF$C$$u20$STF$GT$::start::_$LT$closure$GT$::closure.22652 () #7 0x0000555555850534 in sys_common::unwind::try::try_fn::h10298002884072947541 () #8 0x00005555570e1849 in __rust_try () #9 0x00005555570ddb1c in sys_common::unwind::try::inner_try::h62f00e3d34dbb509D3s () #10 0x000055555585251b in boxed::F.FnBox$LT$A$GT$::call_box::h14260957826631584709 () #11 0x00005555570e3b34 in sys::thread::Thread::new::thread_start::hb3a0514b9d87669e1mx () #12 0x00007ffff5e7e6aa in start_thread (arg=0x7fffd75fe700) at pthread_create.c:333 #13 0x00007ffff599ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 |
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Huh. Is this a release build? I'm surprised there are no line numbers, otherwise. |
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Yes, this is a release build. My intent was to collect profiling data. I've not been able to reproduce this in debug after about 20 attempts. Debug is so slow that perhaps there is a timing/race issue that is only appearing in release builds. |
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I think that if you uncomment https://github.com/servo/servo/blob/master/components/servo/Cargo.toml#L58-L62, you should get line numbers on release, too. We don't have it on by default because debug info in rust release builds via LLVM has been an ICE-factory, though it might be better now... |
thread 'Constellation' panicked at 'unable to find pipeline - this is a bug', ../src/libcore/option.rs:298
[Switching to Thread 0x7fffd77ff700 (LWP 31788)]
Breakpoint 1, 0x00005555571001d0 in rust_panic ()
(gdb) bt
#0 0x00005555571001d0 in rust_panic ()
#1 0x00005555570ec7a3 in sys_common::unwind::begin_unwind_inner::ha417239bcab1f2ff56s ()
#2 0x00005555570ece69 in sys_common::unwind::begin_unwind_fmt::hac4637ed0b5bb49eb6s ()
#3 0x0000555557100362 in rust_begin_unwind ()
#4 0x0000555557137310 in panicking::panic_fmt::he5f9c513e9167673LnK ()
#5 0x0000555555866eb0 in servo::option::Option::expect (self=..., msg=...)
at ../src/libcore/macros.rs:29
#6 servo::constellation::Constellation::mut_pipeline (self=,
pipeline_id=...) at /local/servo/components/compositing/constellation.rs:1652
#7 servo::constellation::Constellation::handle_request (self=)
at /local/servo/components/compositing/constellation.rs:626
#8 0x0000555555852da8 in servo::constellation::Constellation::run (
self=) at /local/servo/components/compositing/constellation.rs:356
#9 fnfn () at /local/servo/components/compositing/constellation.rs:349
#10 0x000055555585257c in fnfn () at ../src/libstd/thread/mod.rs:277
#11 servo::sys_common::unwind::try::try_fn (opt_closure=)
at ../src/libstd/sys/common/unwind/mod.rs:153
#12 0x00005555571001a9 in __rust_try ()
#13 0x00005555570fc47c in sys_common::unwind::try::inner_try::h62f00e3d34dbb509D3s ()
#14 0x00005555558545ff in servo::sys_common::unwind::try (f=...)
at ../src/libstd/sys/common/unwind/mod.rs:123
#15 fnfn () at ../src/libstd/thread/mod.rs:277
#16 servo::boxed::F.FnBox::call_box (self=0x7ffff1691280, args=)
at ../src/liballoc/boxed.rs:541
#17 0x0000555557102494 in sys::thread::Thread::new::thread_start::hb3a0514b9d87669e1mx ()
#18 0x00007ffff5e7e6aa in start_thread (arg=0x7fffd77ff700) at pthread_create.c:333
#19 0x00007ffff599ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
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Interesting, that's the |
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Are you able to reproduce the problem? I was just loading http://www.google.com (sometimes it took a handful of tries before it failed). |
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I haven't tried. |
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Closing for inactivity. @asajeffrey fixed a lot of double panics in this area. |
Just trying to open google.com in a release build. This occurs sometimes, resulting in a SIGILL. Running recent git rev 6663f28.
(gdb) r http://www.google.com Starting program: /local/servo/target/release/servo http://www.google.com [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffeeb43700 (LWP 19592)] [New Thread 0x7fffee5ff700 (LWP 19593)] [New Thread 0x7fffee3fe700 (LWP 19594)] [New Thread 0x7fffed3ff700 (LWP 19595)] [New Thread 0x7fffecdff700 (LWP 19596)] [New Thread 0x7fffec7ff700 (LWP 19597)] [New Thread 0x7fffec5fe700 (LWP 19598)] [New Thread 0x7fffec3fd700 (LWP 19599)] [New Thread 0x7fffd7dff700 (LWP 19600)] [New Thread 0x7fffd7bfe700 (LWP 19601)] [New Thread 0x7fffd73ff700 (LWP 19602)] [New Thread 0x7fffd71fe700 (LWP 19603)] [New Thread 0x7fffd69ff700 (LWP 19604)] [New Thread 0x7fffd65fe700 (LWP 19605)] [New Thread 0x7fffd5fff700 (LWP 19606)] [New Thread 0x7fffd55ff700 (LWP 19607)] [New Thread 0x7fffd53fe700 (LWP 19608)] [New Thread 0x7fffd51fd700 (LWP 19609)] [New Thread 0x7fffd4ffc700 (LWP 19610)] [New Thread 0x7fffd4dfb700 (LWP 19611)] [New Thread 0x7fffd4bfa700 (LWP 19612)] [New Thread 0x7fffd49f9700 (LWP 19613)] [New Thread 0x7fffd47f8700 (LWP 19614)] [New Thread 0x7ffff1b73700 (LWP 19615)] [New Thread 0x7fffd45f7700 (LWP 19616)] [New Thread 0x7ffff1af0700 (LWP 19617)] [New Thread 0x7fffd43f6700 (LWP 19618)] [New Thread 0x7fffee942700 (LWP 19619)] [New Thread 0x7fffee8c1700 (LWP 19620)] [New Thread 0x7fffee1fd700 (LWP 19621)] [New Thread 0x7fffee17c700 (LWP 19622)] [New Thread 0x7fffee0fb700 (LWP 19623)] [New Thread 0x7fffed1fe700 (LWP 19624)] [New Thread 0x7fffcfbff700 (LWP 19625)] [New Thread 0x7fffcf9fe700 (LWP 19626)] [New Thread 0x7fffcf7fd700 (LWP 19627)] [New Thread 0x7fffcf5fc700 (LWP 19628)] [Thread 0x7fffcf5fc700 (LWP 19628) exited] [New Thread 0x7fffcf5fc700 (LWP 19629)] [New Thread 0x7fffcd5ff700 (LWP 19630)] [New Thread 0x7fffcd3fe700 (LWP 19631)] [New Thread 0x7fffcd1fd700 (LWP 19632)] [Thread 0x7fffcd1fd700 (LWP 19632) exited] [Thread 0x7fffcf5fc700 (LWP 19629) exited] [Thread 0x7fffcd5ff700 (LWP 19630) exited] [Thread 0x7fffcd3fe700 (LWP 19631) exited] [New Thread 0x7fffcd3fe700 (LWP 19633)] [Thread 0x7fffcd3fe700 (LWP 19633) exited] [New Thread 0x7fffcd3fe700 (LWP 19634)] [New Thread 0x7fffcd5ff700 (LWP 19635)] [Thread 0x7fffcd3fe700 (LWP 19634) exited] [New Thread 0x7fffcd3fe700 (LWP 19636)] [Thread 0x7fffcd5ff700 (LWP 19635) exited] [Thread 0x7fffcd3fe700 (LWP 19636) exited] [New Thread 0x7fffcd3fe700 (LWP 19637)] [New Thread 0x7fffcd5ff700 (LWP 19638)] [New Thread 0x7fffcf5fc700 (LWP 19639)] [New Thread 0x7fffcd1fd700 (LWP 19640)] [Thread 0x7fffcd3fe700 (LWP 19637) exited] [Thread 0x7fffcf5fc700 (LWP 19639) exited] [Thread 0x7fffcd5ff700 (LWP 19638) exited] [Thread 0x7fffcd1fd700 (LWP 19640) exited] [New Thread 0x7fffcd5ff700 (LWP 19641)] [Thread 0x7fffcd5ff700 (LWP 19641) exited] [New Thread 0x7fffcd5ff700 (LWP 19642)] [Thread 0x7fffcd5ff700 (LWP 19642) exited] [New Thread 0x7fffcd5ff700 (LWP 19643)] [New Thread 0x7fffcd1fd700 (LWP 19644)] [Thread 0x7fffcd5ff700 (LWP 19643) exited] [New Thread 0x7fffcd5ff700 (LWP 19645)] [New Thread 0x7fffcf5fc700 (LWP 19646)] [New Thread 0x7fffcd3fe700 (LWP 19647)] [New Thread 0x7fffc63ff700 (LWP 19648)] [New Thread 0x7fffc61fe700 (LWP 19649)] [New Thread 0x7fffc5ffd700 (LWP 19650)] [New Thread 0x7fffc5dfc700 (LWP 19651)] [New Thread 0x7fffc5bfb700 (LWP 19652)] [New Thread 0x7fffc59fa700 (LWP 19653)] [New Thread 0x7fffc57f9700 (LWP 19654)] [New Thread 0x7fffc55f8700 (LWP 19655)] [New Thread 0x7fffc53f7700 (LWP 19656)] [New Thread 0x7fffc51f6700 (LWP 19657)] [New Thread 0x7fffc4ff5700 (LWP 19658)] [Thread 0x7fffc57f9700 (LWP 19654) exited] [Thread 0x7fffc55f8700 (LWP 19655) exited] [Thread 0x7fffc59fa700 (LWP 19653) exited] [Thread 0x7fffc5dfc700 (LWP 19651) exited] [Thread 0x7fffc5bfb700 (LWP 19652) exited] [Thread 0x7fffc53f7700 (LWP 19656) exited] [Thread 0x7fffc4ff5700 (LWP 19658) exited] [Thread 0x7fffc51f6700 (LWP 19657) exited] [Thread 0x7fffcd3fe700 (LWP 19647) exited] [Thread 0x7fffcf5fc700 (LWP 19646) exited] [New Thread 0x7fffc51f6700 (LWP 19659)] [New Thread 0x7fffcd3fe700 (LWP 19660)] [New Thread 0x7fffcf5fc700 (LWP 19661)] [New Thread 0x7fffc4ff5700 (LWP 19662)] [New Thread 0x7fffc53f7700 (LWP 19663)] [Thread 0x7fffc5ffd700 (LWP 19650) exited] [Thread 0x7fffc61fe700 (LWP 19649) exited] [New Thread 0x7fffc5ffd700 (LWP 19664)] [New Thread 0x7fffc61fe700 (LWP 19665)] [New Thread 0x7fffc5bfb700 (LWP 19666)] thread 'Constellation' panicked at 'unable to find pipeline - this is a bug', ../src/libcore/option.rs:298 [New Thread 0x7fffc5dfc700 (LWP 19667)] [Thread 0x7fffd65fe700 (LWP 19605) exited] [Thread 0x7fffd7dff700 (LWP 19600) exited] [New Thread 0x7fffd7dff700 (LWP 19668)] thread 'LayoutThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(1) }' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rs:688 thread 'thread 'LayoutWorker worker 1/3' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rsLayoutWorker worker 2/3' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rs:688 :688 [Thread 0x7fffc5dfc700 (LWP 19667) exited] [Thread 0x7fffc5ffd700 (LWP 19664) exited] thread '[Thread 0x7fffc5bfb700 (LWP 19666) exited] LayoutWorker worker 3/3' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rs:688 [Thread 0x7fffc61fe700 (LWP 19665) exited] [Thread 0x7fffd7dff700 (LWP 19668) exited] [Thread 0x7fffcd5ff700 (LWP 19645) exited] [New Thread 0x7fffcd5ff700 (LWP 19669)] [New Thread 0x7fffd7dff700 (LWP 19670)] [New Thread 0x7fffc61fe700 (LWP 19671)] thread 'ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(1) }' panicked at 'called `Result::unwrap()` on an `Err` value: "SendError(..)"', ../src/libcore/result.rs:688 thread 'PaintThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(1) }' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rs:688 thread 'PaintWorker' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rs:688 [Thread 0x7fffcd5ff700 (LWP 19669) exited] [Thread 0x7fffcf5fc700 (LWP 19661) exited] thread 'PaintWorker' panicked at 'called `Result::unwrap()` on an `Err` value: RecvErrorthread 'PaintWorker', ../src/libcore/result.rs:' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError688 ', ../src/libcore/result.rs:688 [Thread 0x7fffc61fe700 (LWP 19671) exited] [Thread 0x7fffd7dff700 (LWP 19670) exited] [Thread 0x7fffc4ff5700 (LWP 19662) exited] [Thread 0x7fffc53f7700 (LWP 19663) exited] [Thread 0x7fffcd3fe700 (LWP 19660) exited] [Thread 0x7fffc51f6700 (LWP 19659) exited] ERROR:js::rust: Error at https://apis.google.com/_/scs/abc-static/_/js/k=gapi.gapi.en.031mdWrIyGE.O/m=gapi_iframes,googleapis_client,plusone/rt=j/sv=1/d=1/ed=1/am=AAQ/rs=AHpOoo9LVH8q4HIB6ymfgTF00d12dbkTeA/cb=gapi.loaded_0:202:157: ua.kc is not a function [Thread 0x7fffcd1fd700 (LWP 19644) exited] [New Thread 0x7fffcd1fd700 (LWP 19672)] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: "SendError(..)"', ../src/libcore/result.rs:688 thread '' panicked at 'You should have disposed of the pixmap properly with destroy()! This pixmap will leak!', /local/servo/.cargo/git/checkouts/rust-layers-c02709c0157e02cd/master/src/platform/linux/surface.rs:166 stack backtrace: thread 'LayoutThread PipelineId { namespace_id: PipelineNamespaceId(0), index: PipelineIndex(0) }' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rs:688 1: 0x5555570e23a0 - sys::backtrace::tracing::imp::write::hd273f86d5325347aweu 2: thread 'thread 'LayoutWorker worker 2/3' panicked at 'called `Result::unwrap()` on an `Err` value: RecvErrorPaintThread PipelineId { namespace_id: PipelineNamespaceId(0), index: PipelineIndex(0) }', ../src/libcore/result.rs' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError:688 ', ../src/libcore/result.rs:688 0x5555570e52c5 - panicking::default_handler::_::closure.42335 3thread ': 0x5555570e4d6fthread ' - panickingPaintWorker::default_handler' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError::h907ce0af740f5f06spy', ../src/libcore/result.rs PaintWorker:' panicked at ' 688 4: called `Result::unwrap()` on an `Err` value: RecvError', 0x5555570cdda6 - sys_common::unwind::begin_unwind_inner::ha417239bcab1f2ff56s ../src/libcore/result.rs:688 5: 0x55555671d0df - sys_common::unwind::begin_unwind::h7033116123858859857 thread 'LayoutWorker worker 1/3[Thread 0x7fffd4bfa700 (LWP 19612) exited] ' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', thread 'PaintWorker' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', ../src/libcore/result.rs:688 6: 0x55555671d1e0 - platform::linux::surface::PixmapNativeSurface.Drop::drop::he5fff98ae99886a4Xac 7: 0x5555557e6f17 - [Thread 0x7fffcf7fd700 (LWP 19627) exited] [Thread 0x7fffd49f9700 (LWP 19613) exited] ../src/libcore/result.rsalloc..rc..Rc>::thread 'drop.29162::h8242a9cdd38857f9LayoutWorker worker 3/3' panicked at ' called `Result::unwrap()` on an `Err` value: RecvError', [Thread 0x7fffd55ff700 (LWP 19607) exited] ../src/libcore/result.rs::688 8: 0x5555557e7065 - collections..vec..Vec>>::drop.29174::h378b2d39a09d8a22 9: 0x5555557e6df4 - alloc..rc..Rc>::drop.29162::h8242a9cdd38857f9 10: 0x5555557e8f31 - compositing..compositor..IOCompositor::drop.29555::h325fc04153978866 688 11: 0x5555557d81ff - main::h8517eb49d15e90fbNaa 12: 0x5555570e49f4 - sys_common::unwind::try::try_fn::h10561634035122728855 13: 0x5555570e1848 - __rust_try [New Thread 0x7fffcf9fe700 (LWP 19673)] 14: 0x5555570e4696 - rt::lang_start::[Thread 0x7fffcf9fe700 (LWP 19626) exited] h632953abeabb8774Why [Thread 0x7fffcfbff700 (LWP 19625) exited] 15[Thread 0x7fffd53fe700 (LWP 19608) exited] : 0x7ffff58b6a3f - __libc_start_main 16: 0x5555557cba58 - _start 17: 0x0 - thread panicked while panicking. aborting.[Thread 0x7fffcd1fd700 (LWP 19672) exited] Program received signal SIGILL, Illegal instruction. 0x00005555570cde0b in sys_common::unwind::begin_unwind_inner::ha417239bcab1f2ff56s () (gdb) bt #0 0x00005555570cde0b in sys_common::unwind::begin_unwind_inner::ha417239bcab1f2ff56s () #1 0x000055555671d0e0 in sys_common::unwind::begin_unwind::h7033116123858859857 () #2 0x000055555671d1e1 in platform::linux::surface::PixmapNativeSurface.Drop::drop::he5fff98ae99886a4Xac () #3 0x00005555557e6f18 in alloc..rc..Rc$LT$layers..layers..Layer$LT$compositing..compositor_layer..CompositorData$GT$$GT$::drop.29162::h8242a9cdd38857f9 () #4 0x00005555557e7066 in collections..vec..Vec$LT$alloc..rc..Rc$LT$layers..layers..Layer$LT$compositing..compositor_layer..CompositorData$GT$$GT$$GT$::drop.29174::h378b2d39a09d8a22 () #5 0x00005555557e6df5 in alloc..rc..Rc$LT$layers..layers..Layer$LT$compositing..compositor_layer..CompositorData$GT$$GT$::drop.29162::h8242a9cdd38857f9 () #6 0x00005555557e8f32 in compositing..compositor..IOCompositor$LT$app..window..Window$GT$::drop.29555::h325fc04153978866 () #7 0x00005555557d8200 in main::h8517eb49d15e90fbNaa () #8 0x00005555570e49f5 in sys_common::unwind::try::try_fn::h10561634035122728855 () #9 0x00005555570e1849 in __rust_try () #10 0x00005555570e4697 in rt::lang_start::h632953abeabb8774Why () #11 0x00007ffff58b6a40 in __libc_start_main (main=0x55555581d1e0 , argc=2, argv=0x7fffffffdde8, init=, fini=, rtld_fini=, stack_end=0x7fffffffddd8) at libc-start.c:289 #12 0x00005555557cba59 in _start ()