Fixed overflow #1678

Arneball · 2026-01-23T09:49:41Z

In release builds there were just seemingly random stopped playbacks, and keeping pulseaudio open (thus keeping my amplifier on, because it polls pulseaudio).

But in debug builds I see this panic. This is a 32bit raspberry pi.

  thread 'main' panicked at audio/src/fetch/receive.rs:123:30:
  attempt to multiply with overflow
  stack backtrace:
  0:  0x12e31a0 - std::backtrace_rs::backtrace::libunwind::trace::h5d838b11a2fb0154
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
  1:  0x12e31a0 - std::backtrace_rs::backtrace::trace_unsynchronized::h01349b8d4bfea0a9
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
  2:  0x12e31a0 - std::sys::backtrace::_print_fmt::h7e0ec0d087a40533
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:66:9
  3:  0x12e31a0 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hd3dc17079bb164c9
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:39:26
  4:  0x131274c - core::fmt::rt::Argument::fmt::hd891de0f513d4be8
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/fmt/rt.rs:177:76
  5:  0x131274c - core::fmt::write::h0adef8a48142adfb
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/fmt/mod.rs:1440:21
  6:  0x12de118 - std::io::Write::write_fmt::hab4529fb9f24681e
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/io/mod.rs:1887:15
  7:  0x12e3034 - std::sys::backtrace::BacktraceLock::print::h192621e84d520b26
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:42:9
  8:  0x12e44cc - std::panicking::default_hook::{{closure}}::h039d3dcc9e1e0474
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:295:22
  9:  0x12e4268 - std::panicking::default_hook::hd1f3fb0c179c213f
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:322:9
  10:  0x12e4da4 - std::panicking::rust_panic_with_hook::h1db2d9744df8f664
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:828:13
  11:  0x12e49f4 - std::panicking::begin_panic_handler::{{closure}}::h6889a9fc597e3903
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:694:13
  12:  0x12e3750 - std::sys::backtrace::__rust_end_short_backtrace::h9eb2c247e5f04963
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:168:18
  13:  0x12e46d0 - rust_begin_unwind
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:692:5
  14:   0x4aca80 - core::panicking::panic_fmt::h85d969163576833b
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/panicking.rs:75:14
  15:   0x4ad1d0 - core::panicking::panic_const::panic_const_mul_overflow::hb86def89255d28ac
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/panicking.rs:178:21
  16:   0x921ed0 - librespot_audio::fetch::receive::receive_data::{{closure}}::hc1a435888c1a7a71
  at /home/pi/librespot/audio/src/fetch/receive.rs:123:30
  17:   0x93696c - tokio::runtime::task::core::Core<T,S>::poll::{{closure}}::h956ba50e45daff54
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/core.rs:365:17
  18:   0x936590 - tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut::h301a163423532c64
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/loom/std/unsafe_cell.rs:16:9
  19:   0x936590 - tokio::runtime::task::core::Core<T,S>::poll::h9833f4d207131726
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/core.rs:354:13
  20:   0x92b720 - tokio::runtime::task::harness::poll_future::{{closure}}::h40453c7820943b8a
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/harness.rs:535:19
  21:   0x93d28c - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hebebc9890d448ac1
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/panic/unwind_safe.rs:272:9
  22:   0x938f08 - std::panicking::try::do_call::hdc1336d2178517b9
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:584:40
  23:   0x938500 - __rust_try
  24:   0x938230 - std::panicking::try::h0ed285dcaf5afa5f
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:547:19
  25:   0x938230 - std::panic::catch_unwind::hcbcc77faa7e14414
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panic.rs:358:14
  26:   0x92afac - tokio::runtime::task::harness::poll_future::h663b2159a8bbc530
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/harness.rs:523:18
  27:   0x92be58 - tokio::runtime::task::harness::Harness<T,S>::poll_inner::hea612f4855422ade
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/harness.rs:210:27
  28:   0x92c9bc - tokio::runtime::task::harness::Harness<T,S>::poll::hffc800ff9423a9a7
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/harness.rs:155:15
  29:   0x93ae94 - tokio::runtime::task::raw::poll::ha38f1d2a3e77362f
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/raw.rs:325:5
  30:   0xf79ce0 - tokio::runtime::task::raw::RawTask::poll::ha1ac536696fb660d
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/raw.rs:255:18
  31:   0xbf35e0 - tokio::runtime::task::LocalNotified<S>::run::h5b5656112ae671a6
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/task/mod.rs:509:9
  32:   0x5b52d0 - tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::{{closure}}::h3a450e5faad86c86
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:789:25
  33:   0x5b291c - tokio::task::coop::with_budget::h514f50fad5fe6980
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/task/coop/mod.rs:167:5
  34:   0x5b291c - tokio::task::coop::budget::h45ee2610fee65880
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/task/coop/mod.rs:133:5
  35:   0x5b291c - tokio::runtime::scheduler::current_thread::Context::run_task::{{closure}}::ha388085fd04fa656
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:368:43
  36:   0x5b19cc - tokio::runtime::scheduler::current_thread::Context::enter::h52b32fe8bef292e3
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:432:19
  37:   0x5b2258 - tokio::runtime::scheduler::current_thread::Context::run_task::h86bbd04df2a589ac
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:368:23
  38:   0x5b50cc - tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::h882d9ad22deec6cf
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:785:35
  39:   0x5b3738 - tokio::runtime::scheduler::current_thread::CoreGuard::enter::{{closure}}::h1d74d6cd7d6ccd28
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:829:68
  40:   0x5b67a8 - tokio::runtime::context::scoped::Scoped<T>::set::h5d7a5d97a37c7ff9
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/context/scoped.rs:40:9
  41:   0x51f3a8 - tokio::runtime::context::set_scheduler::{{closure}}::hd9acba127e436f45
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/context.rs:176:26
  42:   0x528b30 - std::thread::local::LocalKey<T>::try_with::h4f4e99fb34c01f4b
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/thread/local.rs:308:12
  43:   0x527d9c - std::thread::local::LocalKey<T>::with::hf086de8e4044e4de
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/thread/local.rs:272:9
  44:   0x51f2d8 - tokio::runtime::context::set_scheduler::hbc67d8ec18dcba76
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/context.rs:176:9
  45:   0x5b3240 - tokio::runtime::scheduler::current_thread::CoreGuard::enter::ha1447d4f11ad7a83
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:829:27
  46:   0x5b37f0 - tokio::runtime::scheduler::current_thread::CoreGuard::block_on::h278adfb129ed5ce6
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:729:19
  47:   0x5adfd0 - tokio::runtime::scheduler::current_thread::CurrentThread::block_on::{{closure}}::hb745e5990cb87db4
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:200:28
  48:   0x55adcc - tokio::runtime::context::runtime::enter_runtime::h7abcb84190375450
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/context/runtime.rs:65:16
  49:   0x5ad2d8 - tokio::runtime::scheduler::current_thread::CurrentThread::block_on::h8bd0717f1ca31189
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/scheduler/current_thread/mod.rs:188:9
  50:   0x4e85d4 - tokio::runtime::runtime::Runtime::block_on_inner::h9ef91b8163fc785e
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/runtime.rs:368:47
  51:   0x4e8cc8 - tokio::runtime::runtime::Runtime::block_on::hc6a5bd9dd0181cf4
  at /home/pi/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/runtime/runtime.rs:340:13
  52:   0x5a0e9c - librespot::main::h402a7313d3f481db
  at /home/pi/librespot/src/main.rs:2108:5
  53:   0x5c0db8 - core::ops::function::FnOnce::call_once::h96666ed5c7351a60
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/ops/function.rs:250:5
  54:   0x5139d8 - std::sys::backtrace::__rust_begin_short_backtrace::h30e1a5594199af8d
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:152:18
  55:   0x51c0dc - std::rt::lang_start::{{closure}}::h4ba7439166dd3fc6
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/rt.rs:195:18
  56:  0x12d34b0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hbcd5ec90e0190569
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/ops/function.rs:284:13
  57:  0x12d34b0 - std::panicking::try::do_call::h2ece9808277dbad4
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:584:40
  58:  0x12d34b0 - std::panicking::try::hec4f26dd744fab00
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:547:19
  59:  0x12d34b0 - std::panic::catch_unwind::h54846c7de2f08558
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panic.rs:358:14
  60:  0x12d34b0 - std::rt::lang_start_internal::{{closure}}::hd1cb3b5bc77e987f
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/rt.rs:174:48
  61:  0x12d34b0 - std::panicking::try::do_call::h199a67fc8ac74d98
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:584:40
  62:  0x12d34b0 - std::panicking::try::h822e419404e86fc0
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:547:19
  63:  0x12d34b0 - std::panic::catch_unwind::h6429f4c61d6c92ca
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panic.rs:358:14
  64:  0x12d34b0 - std::rt::lang_start_internal::h6ef31cf562bcc908
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/rt.rs:174:20
  65:   0x51c0ac - std::rt::lang_start::h0b94edd947f21f1d
  at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/rt.rs:194:17
  66:   0x5a0f3c - main
  67: 0x76a72768 - __libc_start_main
  at /build/glibc-lsttuD/glibc-2.28/csu/libc-start.c:308:16
  [2026-01-23T09:17:08Z DEBUG librespot_audio::fetch] Downloading file 6d15a62ddfe841cb0c13ba7271fc5370df4ef659 complete
  [2026-01-23T09:18:56Z DEBUG librespot_core::session] Session strong=6 weak=8
  [2026-01-23T09:20:56Z DEBUG librespot_core::session] Session strong=6 weak=8

Fixes #1680

audio/src/fetch/receive.rs

photovoltex

Add an changelog entry for this change and then this is good to go :D

photovoltex

Thanks for the fix :)

Arneball force-pushed the dev branch 2 times, most recently from cd57d0d to 430068d Compare January 23, 2026 11:07

kingosticks mentioned this pull request Jan 24, 2026

Librespot panics on attempt to multiply with overflow #1680

Closed

photovoltex reviewed Jan 25, 2026

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audio/src/fetch/receive.rs Outdated Show resolved Hide resolved

Arneball force-pushed the dev branch from 430068d to 1f6c5b0 Compare January 25, 2026 18:54

photovoltex requested changes Jan 26, 2026

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Fixed overflow

e2410e4

Arneball force-pushed the dev branch from 1f6c5b0 to e2410e4 Compare January 27, 2026 09:47

Arneball requested a review from photovoltex January 27, 2026 10:02

photovoltex approved these changes Jan 28, 2026

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photovoltex merged commit 7ae3436 into librespot-org:dev Jan 28, 2026
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Fixed overflow #1678

Fixed overflow #1678

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Arneball commented Jan 23, 2026 •

edited by photovoltex

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Fixed overflow #1678

Fixed overflow #1678

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Arneball commented Jan 23, 2026 •

edited by photovoltex

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