Xuanwo opened a new issue, #2722:
URL: https://github.com/apache/incubator-opendal/issues/2722
```shell
:( cargo +nightly fuzz run fuzz_reader
artifacts/fuzz_reader/minimized-from-9d3dad06d7ca32c27950b3ae1d2e309bad6094ea
Finished release [optimized] target(s) in 0.12s
Finished release [optimized] target(s) in 0.09s
Running
`/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader
-artifact_prefix=/home/xuanwo/Code/apache/incubator-opendal/core/fuzz/artifacts/fuzz_reader/
artifacts/fuzz_reader/minimized-from-9d3dad06d7ca32c27950b3ae1d2e309bad6094ea`
INFO: Running with entropic power schedule (0xFF, 100).
INFO: Seed: 3984204395
INFO: Loaded 1 modules (1676548 inline 8-bit counters): 1676548
[0x5598515f5a70, 0x55985178ef74),
INFO: Loaded 1 PC tables (1676548 PCs): 1676548
[0x55985178ef78,0x559853123fb8),
/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader:
Running 1 inputs 1 time(s) each.
Running:
artifacts/fuzz_reader/minimized-from-9d3dad06d7ca32c27950b3ae1d2e309bad6094ea
thread '<unnamed>' panicked at 'split_off out of bounds: 33 <= 1',
/home/xuanwo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/bytes-1.4.0/src/bytes.rs:363:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
==248339== ERROR: libFuzzer: deadly signal
#0 0x55984b8491c1 in __sanitizer_print_stack_trace
/rustc/llvm/src/llvm-project/compiler-rt/lib/asan/asan_stack.cpp:87:3
#1 0x5598506d0639 in fuzzer::PrintStackTrace()
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x7978639)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#2 0x5598506bb5f5 in fuzzer::Fuzzer::CrashCallback()
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x79635f5)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#3 0x7f5ea4f3daaf (/usr/lib/libc.so.6+0x39aaf) (BuildId:
2f005a79cd1a8e385972f5a102f16adba414d75e)
#4 0x7f5ea4f8d26b (/usr/lib/libc.so.6+0x8926b) (BuildId:
2f005a79cd1a8e385972f5a102f16adba414d75e)
#5 0x7f5ea4f3da07 in raise (/usr/lib/libc.so.6+0x39a07) (BuildId:
2f005a79cd1a8e385972f5a102f16adba414d75e)
#6 0x7f5ea4f26537 in abort (/usr/lib/libc.so.6+0x22537) (BuildId:
2f005a79cd1a8e385972f5a102f16adba414d75e)
#7 0x5598507edd76 in std::sys::unix::abort_internal::h63f0698e94a55c16
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/std/src/sys/unix/mod.rs:353:14
#8 0x55984b7a2f66 in std::process::abort::hde140a29d7aff61b
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/std/src/process.rs:2192:5
#9 0x5598506b4054 in
libfuzzer_sys::initialize::_$u7b$$u7b$closure$u7d$$u7d$::hb9c95bd27ff89c6e
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x795c054)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#10 0x5598507e212d in
_$LT$alloc..boxed..Box$LT$F$C$A$GT$$u20$as$u20$core..ops..function..Fn$LT$Args$GT$$GT$::call::hb0db5a757122b53f
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/alloc/src/boxed.rs:2007:9
#11 0x5598507e212d in
std::panicking::rust_panic_with_hook::h930423a0af750837
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/std/src/panicking.rs:709:13
#12 0x5598507e1eb6 in
std::panicking::begin_panic_handler::_$u7b$$u7b$closure$u7d$$u7d$::hedcbf13188c6fc94
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/std/src/panicking.rs:597:13
#13 0x5598507df1e5 in
std::sys_common::backtrace::__rust_end_short_backtrace::h4c8600e23762cbdf
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/std/src/sys_common/backtrace.rs:151:18
#14 0x5598507e1c01 in rust_begin_unwind
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/std/src/panicking.rs:593:5
#15 0x55984b7a6622 in core::panicking::panic_fmt::h72a4ec6bb9d8bb6c
/rustc/33a2c2487ac5d9927830ea4c1844335c6b9f77db/library/core/src/panicking.rs:67:14
#16 0x559850786f27 in bytes::bytes::Bytes::split_off::hfc4d00cc99cbf53d
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x7a2ef27)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#17 0x55984c71c758 in
opendal::raw::adapters::typed_kv::backend::Backend$LT$S$GT$::apply_range::hb37e0daf021aa79d
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x39c4758)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#18 0x55984d26a192 in
_$LT$opendal..raw..adapters..typed_kv..backend..Backend$LT$S$GT$$u20$as$u20$opendal..raw..accessor..Accessor$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::h8fa6ea12513c8aad
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x4512192)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#19 0x55984b980397 in
_$LT$futures_util..future..future..map..Map$LT$Fut$C$F$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h39bb7db6349139be
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2c28397)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#20 0x55984b9834ef in
_$LT$futures_util..future..future..map..Map$LT$Fut$C$F$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h3ba0c66868a8b2b2
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2c2b4ef)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#21 0x55984cb62ef4 in
_$LT$opendal..layers..error_context..ErrorContextAccessor$LT$A$GT$$u20$as$u20$opendal..raw..layer..LayeredAccessor$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::hbd47587e3d1993ea
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x3e0aef4)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#22 0x55984d091365 in
opendal::raw::layer::_$LT$impl$u20$opendal..raw..accessor..Accessor$u20$for$u20$L$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::h3950ce6537b8f111
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x4339365)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#23 0x55984cf62d87 in
_$LT$alloc..sync..Arc$LT$T$GT$$u20$as$u20$opendal..raw..accessor..Accessor$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::h02e0b613a0f676f5
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x420ad87)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#24 0x55984c5c3422 in
opendal::layers::complete::CompleteReaderAccessor$LT$A$GT$::complete_reader::_$u7b$$u7b$closure$u7d$$u7d$::ha4697aff3f34943f
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x386b422)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#25 0x55984cd4b210 in
_$LT$opendal..layers..complete..CompleteReaderAccessor$LT$A$GT$$u20$as$u20$opendal..raw..layer..LayeredAccessor$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::h29d6e8cd606fdebb
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x3ff3210)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#26 0x55984d0a01c9 in
opendal::raw::layer::_$LT$impl$u20$opendal..raw..accessor..Accessor$u20$for$u20$L$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::ha8409f168e85ab97
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x43481c9)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#27 0x55984cad35e8 in
_$LT$opendal..layers..type_eraser..TypeEraseAccessor$LT$A$GT$$u20$as$u20$opendal..raw..layer..LayeredAccessor$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::h49264ee5f01592f6
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x3d7b5e8)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#28 0x55984d096be7 in
opendal::raw::layer::_$LT$impl$u20$opendal..raw..accessor..Accessor$u20$for$u20$L$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::h68d49216dac9fbd5
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x433ebe7)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#29 0x55984cf6cc36 in
_$LT$alloc..sync..Arc$LT$T$GT$$u20$as$u20$opendal..raw..accessor..Accessor$GT$::read::_$u7b$$u7b$closure$u7d$$u7d$::h9db59b70e1960fd7
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x4214c36)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#30 0x55984c4cb336 in
opendal::types::reader::Reader::create_dir::_$u7b$$u7b$closure$u7d$$u7d$::ha160553671cbdbdc
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x3773336)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#31 0x55984c4f5d18 in
opendal::types::operator::operator::Operator::reader_with::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hee45c8321588bdab
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x379dd18)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#32 0x55984c54be2d in
_$LT$opendal..types..operator..operator_futures..OperatorFuture$LT$T$C$F$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h069bf8b7dfcb83bd
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x37f3e2d)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#33 0x55984c55d1c7 in
_$LT$opendal..types..operator..operator_futures..FutureReader$u20$as$u20$core..future..future..Future$GT$::poll::h67c6edcdf3609ce7
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x38051c7)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#34 0x55984b8dd18a in
opendal::types::operator::operator::Operator::range_reader::_$u7b$$u7b$closure$u7d$$u7d$::h8a46e19506bd42d2
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2b8518a)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#35 0x55984b8fea11 in
fuzz_reader::fuzz_reader::_$u7b$$u7b$closure$u7d$$u7d$::he2b5e6bb56589890
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2ba6a11)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#36 0x55984b905165 in
fuzz_reader::_::__libfuzzer_sys_run::_$u7b$$u7b$closure$u7d$$u7d$::hf3abe258e7ec5636
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2bad165)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#37 0x55984b8c3a23 in
tokio::runtime::park::CachedParkThread::block_on::ha437b0383a4eec6a
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2b6ba23)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#38 0x55984b8c5c22 in
tokio::runtime::context::runtime::enter_runtime::h37b3ea0dc70e953c
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2b6dc22)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#39 0x55984b8c7bef in
tokio::runtime::runtime::Runtime::block_on::hdfbce2dfe5e52897
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2b6fbef)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#40 0x55984b90458c in
fuzz_reader::_::__libfuzzer_sys_run::h28f31fd7b378e747
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2bac58c)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#41 0x55984b903032 in rust_fuzzer_test_input
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2bab032)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#42 0x5598506aeec8 in std::panicking::try::do_call::h6c74220be6c44d27
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x7956ec8)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#43 0x5598506b4267 in __rust_try libfuzzer_sys.17f0a85a6163a9ff-cgu.0
#44 0x5598506b34c5 in LLVMFuzzerTestOneInput
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x795b4c5)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#45 0x5598506bbb29 in fuzzer::Fuzzer::ExecuteCallback(unsigned char
const*, unsigned long)
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x7963b29)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#46 0x5598506e404d in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*,
unsigned long)
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x798c04d)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#47 0x5598506e8836 in fuzzer::FuzzerDriver(int*, char***, int
(*)(unsigned char const*, unsigned long))
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x7990836)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#48 0x55984b7a6f72 in main
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2a4ef72)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
#49 0x7f5ea4f2784f (/usr/lib/libc.so.6+0x2384f) (BuildId:
2f005a79cd1a8e385972f5a102f16adba414d75e)
#50 0x7f5ea4f27909 in __libc_start_main (/usr/lib/libc.so.6+0x23909)
(BuildId: 2f005a79cd1a8e385972f5a102f16adba414d75e)
#51 0x55984b7a70f4 in _start
(/home/xuanwo/Code/apache/incubator-opendal/target/x86_64-unknown-linux-gnu/release/fuzz_reader+0x2a4f0f4)
(BuildId: 37955fc5093fb1bbd405d65281b393478a3f35b4)
NOTE: libFuzzer has rudimentary signal handlers.
Combine libFuzzer with AddressSanitizer or similar for better crash
reports.
SUMMARY: libFuzzer: deadly signal
────────────────────────────────────────────────────────────────────────────────
Error: Fuzz target exited with exit status: 77
```
Fuzz Input:
```shell
FuzzInput {
size: 16776994,
range: BytesRange(
Some(
33,
),
Some(
1,
),
),
actions: [
Read {
size: 0,
},
]
}
```
Crash file base64: `//8h/yE=`
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