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[Wasm][AOT] Profiled AOT compilation fails with Segmentation fault #70773

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jeromelaban opened this issue Jun 15, 2022 · 4 comments · Fixed by #70926
Closed

[Wasm][AOT] Profiled AOT compilation fails with Segmentation fault #70773

jeromelaban opened this issue Jun 15, 2022 · 4 comments · Fixed by #70926
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@vargaz
Labels
arch-wasm WebAssembly architecture area-Codegen-AOT-mono
Milestone
7.0.0

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@jeromelaban
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jeromelaban commented Jun 15, 2022 •
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Description

Unknown crash with AOT compiling the attached repro.

Reproduction Steps

Under Linux, using the following archive: 70773-workAot.zip
Run with the following parameters:

cd workAot
MONO_PATH=./aot-in:./linker-out dotnet-runtime-wasm-linux-33813c4-59b2dd9fa37-2492148814-Release/runtimes/browser-wasm/native/cross/browser-wasm/mono-aot-cross --debug   --wasm-exceptions  --aot=,llvmonly,asmonly,no-opt,static,direct-icalls,deterministic,nodebug,llvm-path="~/.uno/emsdk/emsdk-3.1.7/emsdk/upstream/bin",profile="./aot.profile",profile-only,interp,,depfile=./linker-out/Syncfusion.SfChart.Uno.dll.depfile,llvm-outfile=./Syncfusion.SfChart.Uno.dll.bc.tmp ./linker-out/Syncfusion.SfChart.Uno.dll

Expected behavior

No crash

Actual behavior

Mono Ahead of Time compiler - compiling assembly workAot/linker-out/Syncfusion.SfChart.Uno.dll
Using profile data file './aot.profile'
Segmentation fault (core dumped)

Regression?

yes

Known Workarounds

None

Configuration

495d08f

Other information

No response
@ghost ghost added the untriaged New issue has not been triaged by the area owner label Jun 15, 2022
@lewing
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lewing commented Jun 15, 2022

cc @steveisok

@lewing lewing added the arch-wasm WebAssembly architecture label Jun 15, 2022
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ghost commented Jun 15, 2022

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

Description

Unknown crash with AOT compiling the attached repro.

Reproduction Steps

Under Linux, using the following archive: 70773-workAot.zip
Run with the following parameters:

cd workAot
MONO_PATH=./aot-in:./linker-out dotnet-runtime-wasm-linux-33813c4-59b2dd9fa37-2492148814-Release/runtimes/browser-wasm/native/cross/browser-wasm/mono-aot-cross --debug   --wasm-exceptions  --aot=,llvmonly,asmonly,no-opt,static,direct-icalls,deterministic,nodebug,llvm-path="~/.uno/emsdk/emsdk-3.1.7/emsdk/upstream/bin",profile="./aot.profile",profile-only,interp,,depfile=./linker-out/Syncfusion.SfChart.Uno.dll.depfile,llvm-outfile=./Syncfusion.SfChart.Uno.dll.bc.tmp ./linker-out/Syncfusion.SfChart.Uno.dll

Expected behavior

No crash

Actual behavior

Mono Ahead of Time compiler - compiling assembly workAot/linker-out/Syncfusion.SfChart.Uno.dll
Using profile data file './aot.profile'
Segmentation fault (core dumped)

Regression?

yes

Known Workarounds

None

Configuration

495d08f

Other information

No response

Author: jeromelaban
Assignees: -
Labels:

arch-wasm, untriaged, area-Codegen-AOT-mono
Milestone: -

@lewing lewing added this to the 7.0.0 milestone Jun 15, 2022
@ghost ghost removed the untriaged New issue has not been triaged by the area owner label Jun 15, 2022
@vargaz vargaz self-assigned this Jun 15, 2022
@jeromelaban jeromelaban mentioned this issue Jun 17, 2022
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@jeromelaban
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@vargaz It may not be super useful, but here one part of the stack:

Thread 1 "mono-aot-cross" received signal SIGSEGV, Segmentation fault.
__strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
65      ../sysdeps/x86_64/multiarch/strlen-avx2.S: No such file or directory.
(gdb) bt
#0  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
#1  0x00007fffff258d15 in __vfprintf_internal (s=s@entry=0x7ffffffed530, format=format@entry=0x88170dd "%s_%s", ap=ap@entry=0x7ffffffed680, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:1688
#2  0x00007fffff26bbca in __vasprintf_internal (result_ptr=0x7ffffffed678, format=0x88170dd "%s_%s", args=0x7ffffffed680, mode_flags=mode_flags@entry=2) at vasprintf.c:57
#3  0x00007fffff30f6ec in __vasprintf_chk (result_ptr=<optimized out>, flag=flag@entry=1, format=<optimized out>, ap=<optimized out>) at vasprintf_chk.c:36
#4  0x00000000080dca21 in vasprintf (__ap=<optimized out>, __fmt=<optimized out>, __ptr=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/stdio2.h:210
#5  monoeg_g_vasprintf (ret=<optimized out>, fmt=<optimized out>, ap=<optimized out>) at /__w/Uno.DotnetRuntime.WebAssembly/Uno.DotnetRuntime.WebAssembly/runtime/src/mono/mono/eglib/gstr.c:68
#6  0x000000000b0c6c10 in ?? ()
#7  0x00007ffffffed788 in ?? ()
#8  0x0000003000000010 in ?? ()
#9  0x00007ffffffed760 in ?? ()
#10 0x00007ffffffed6a0 in ?? ()
#11 0x421dab0f3b799a00 in ?? ()
#12 0x0000005b0000006e in ?? ()
#13 0x0000048000010093 in ?? ()
#14 0x000000000b0c6c30 in ?? ()
#15 0x0000000000000065 in ?? ()
#16 0x0000000000000000 in ?? ()

@jeromelaban
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@vargaz

Starting program: /mnt/c/temp/mono-aot-cross --debug --wasm-exceptions --aot=,llvmonly,asmonly,no-opt,static,direct-icalls,deterministic,nodebug,llvm-path=\~/.uno/emsdk/emsdk-3.1.7/emsdk/upstream/bin,profile=./aot.profile,profile-only,interp,,depfile=./linker-out/Syncfusion.SfChart.Uno.dll.depfile,llvm-outfile=./Syncfusion.SfChart.Uno.dll.bc.tmp ./linker-out/Syncfusion.SfChart.Uno.dll
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffffe7f0700 (LWP 1426)]
Mono Ahead of Time compiler - compiling assembly /mnt/c/s/uno.clients/Kahua/20220615-aot-crash-workaot/workAot/linker-out/Syncfusion.SfChart.Uno.dll
Using profile data file './aot.profile'

Thread 1 "mono-aot-cross" received signal SIGSEGV, Segmentation fault.
0x000000000810cd3b in collect_aggregate_modifiers_images (amods=0x802000001, data=0x7ffffffed4b0) at /home/jay/runtime/src/mono/mono/metadata/metadata.c:3093
3093    /home/jay/runtime/src/mono/mono/metadata/metadata.c: No such file or directory.
(gdb) bt
#0  0x000000000810cd3b in collect_aggregate_modifiers_images (amods=0x802000001, data=0x7ffffffed4b0) at /home/jay/runtime/src/mono/mono/metadata/metadata.c:3093
#1  0x000000000810cdaf in collect_type_images (type=0x916d298, data=0x7ffffffed4b0) at /home/jay/runtime/src/mono/mono/metadata/metadata.c:3102
#2  0x000000000810d663 in mono_metadata_get_mem_manager_for_type (type=0x916d298) at /home/jay/runtime/src/mono/mono/metadata/metadata.c:3312
#3  0x00000000082bfb96 in mini_get_shared_gparam (t=0x916d298, constraint=0x916c978) at /home/jay/runtime/src/mono/mono/mini/mini-generic-sharing.c:4109
#4  0x00000000082c01f4 in get_shared_type (t=0x916d298, type=0xac823c0) at /home/jay/runtime/src/mono/mono/mini/mini-generic-sharing.c:4207
#5  0x00000000082c02f6 in get_shared_inst (inst=0xac7cd70, shared_inst=0xa4b9780, container=0xa4be2a8, use_gsharedvt=0) at /home/jay/runtime/src/mono/mono/mini/mini-generic-sharing.c:4231
#6  0x00000000082c0740 in mini_get_shared_method_full (method=0xac82590, flags=SHARE_MODE_NONE, error=0x7ffffffed9a0) at /home/jay/runtime/src/mono/mono/mini/mini-generic-sharing.c:4345
#7  0x00000000082769aa in add_extra_method_with_depth (acfg=0x917d270, method=0xac82590, depth=0) at /home/jay/runtime/src/mono/mono/mini/aot-compiler.c:4314
#8  0x0000000008276bd0 in add_extra_method (acfg=0x917d270, method=0xac82590) at /home/jay/runtime/src/mono/mono/mini/aot-compiler.c:4346
#9  0x0000000008290f1f in add_profile_method (acfg=0x917d270, m=0xac82590) at /home/jay/runtime/src/mono/mono/mini/aot-compiler.c:13137
#10 0x0000000008291073 in add_single_profile_method (acfg=0x917d270, method=0xac82590) at /home/jay/runtime/src/mono/mono/mini/aot-compiler.c:13183
#11 0x0000000008291190 in add_profile_instances (acfg=0x917d270, data=0x918b0f0) at /home/jay/runtime/src/mono/mono/mini/aot-compiler.c:13218
#12 0x0000000008294129 in mono_compile_assembly (ass=0x917d010, opts=374417919,
    aot_options=0x911e7d0 ",llvmonly,asmonly,no-opt,static,direct-icalls,deterministic,nodebug,llvm-path=~/.uno/emsdk/emsdk-3.1.7/emsdk/upstream/bin,profile=./aot.profile,profile-only,interp,,depfile=./linker-out/Syncfusion.SfC"..., global_aot_state=0x7ffffffedc08) at /home/jay/runtime/src/mono/mono/mini/aot-compiler.c:14362
#13 0x0000000008266ef8 in main_thread_handler (user_data=0x7ffffffedde0) at /home/jay/runtime/src/mono/mono/mini/driver.c:1419
#14 0x000000000826e122 in mono_main (argc=4, argv=0x7ffffffedfa8) at /home/jay/runtime/src/mono/mono/mini/driver.c:2651
#15 0x00000000080809ad in mono_main_with_options (argc=5, argv=0x7ffffffedfa8) at /home/jay/runtime/src/mono/mono/mini/main.c:36
#16 0x00000000080809cf in main (argc=5, argv=0x7ffffffedfa8) at /home/jay/runtime/src/mono/mono/mini/main.c:88
(gdb)

@vargaz vargaz mentioned this issue Jun 18, 2022
Merged
@ghost ghost added the in-pr There is an active PR which will close this issue when it is merged label Jun 18, 2022
vargaz added a commit to vargaz/runtime that referenced this issue Jun 18, 2022
@vargaz
[mono][aot] Avoid inflating methods with instantiations with a wrong …
5688208 
…argument count when using profiled AOT.

Fixes dotnet#70773.
@ghost ghost removed the in-pr There is an active PR which will close this issue when it is merged label Jul 5, 2022
vargaz added a commit that referenced this issue Jul 5, 2022
@vargaz
[mono][aot] Avoid inflating methods with instantiations with a wrong …
66aaeb0 
…argument count when using profiled AOT. (#70926)

Fixes #70773.
@ghost ghost locked as resolved and limited conversation to collaborators Aug 4, 2022
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Labels
arch-wasm WebAssembly architecture area-Codegen-AOT-mono
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Milestone
7.0.0
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[mono][aot] Avoid inflating methods with instantiation with a wrong a… vargaz/runtime
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@lewing @vargaz @jeromelaban