Bump actions/checkout from 3 to 4 #1
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Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4. - [Release notes](https://github.com/actions/checkout/releases) - [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md) - [Commits](actions/checkout@v3...v4) --- updated-dependencies: - dependency-name: actions/checkout dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>
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to avoid deadlock
```ruby
r = Ractor.new do
obj = Thread.new{}
Ractor.yield obj
rescue => e
e.message
end
p r.take
```
```
(lldb) bt
* thread #1, name = 'miniruby', stop reason = signal SIGSTOP
* frame #0: 0x0000ffff44881410 libpthread.so.0`__lll_lock_wait + 88
frame #1: 0x0000ffff4487a078 libpthread.so.0`__pthread_mutex_lock + 232
frame #2: 0x0000aaab617c0980 miniruby`rb_native_mutex_lock(lock=<unavailable>) at thread_pthread.c:109:14
frame #3: 0x0000aaab617c1d58 miniruby`ubf_event_waiting [inlined] thread_sched_lock_(th=0x0000aaab9df82980, file=<unavailable>, line=46, sched=0x0000aaab9dec79b8) at thread_pthread.c:351:5
frame #4: 0x0000aaab617c1d50 miniruby`ubf_event_waiting(ptr=0x0000aaab9df82980) at thread_pthread_mn.c:46:5
frame #5: 0x0000aaab617c6020 miniruby`rb_threadptr_interrupt [inlined] rb_threadptr_interrupt_common(trap=0, th=0x0000aaab9df82980) at thread.c:352:25
frame #6: 0x0000aaab617c5fec miniruby`rb_threadptr_interrupt(th=0x0000aaab9df82980) at thread.c:365:5
frame #7: 0x0000aaab617379b0 miniruby`rb_ractor_terminate_all at ractor.c:2364:13
frame ruby#8: 0x0000aaab6173797c miniruby`rb_ractor_terminate_all at ractor.c:2383:17
frame ruby#9: 0x0000aaab61737958 miniruby`rb_ractor_terminate_all [inlined] ractor_terminal_interrupt_all(vm=0x0000aaab9dea3320) at ractor.c:2375:1
frame ruby#10: 0x0000aaab61737950 miniruby`rb_ractor_terminate_all at ractor.c:2424:13
frame ruby#11: 0x0000aaab6164f108 miniruby`rb_ec_cleanup(ec=0x0000aaab9dea5900, ex=RUBY_TAG_NONE) at eval.c:239:9
frame ruby#12: 0x0000aaab6164fa3c miniruby`ruby_run_node(n=0x0000ffff417ed178) at eval.c:328:12
frame ruby#13: 0x0000aaab615a5ab0 miniruby`main at main.c:39:12
frame ruby#14: 0x0000aaab615a5a98 miniruby`main(argc=<unavailable>, argv=<unavailable>) at main.c:58:12
frame ruby#15: 0x0000ffff44714b2c libc.so.6`__libc_start_main + 228
frame ruby#16: 0x0000aaab615a5b0c miniruby`_start + 52
(lldb) thread select 3
* thread #3, name = 'bootstraptest.*', stop reason = signal SIGSTOP
frame #0: 0x0000ffff448813ec libpthread.so.0`__lll_lock_wait + 52
libpthread.so.0`__lll_lock_wait:
-> 0xffff448813ec <+52>: svc #0
0xffff448813f0 <+56>: eor w20, w20, #0x80
0xffff448813f4 <+60>: sxtw x20, w20
0xffff448813f8 <+64>: b 0xffff44881414 ; <+92>
(lldb) bt
* thread #3, name = 'bootstraptest.*', stop reason = signal SIGSTOP
* frame #0: 0x0000ffff448813ec libpthread.so.0`__lll_lock_wait + 52
frame #1: 0x0000ffff4487a078 libpthread.so.0`__pthread_mutex_lock + 232
frame #2: 0x0000aaab617c0980 miniruby`rb_native_mutex_lock(lock=<unavailable>) at thread_pthread.c:109:14
frame #3: 0x0000aaab61823d68 miniruby`rb_vm_lock_enter_body [inlined] vm_lock_enter(no_barrier=false, lev=0x0000ffff215bfbe4, locked=false, vm=0x0000aaab9dea3320, cr=0x0000aaab9dec7890) at vm_sync.c:57:9
frame #4: 0x0000aaab61823d60 miniruby`rb_vm_lock_enter_body(lev=0x0000ffff215bfbe4) at vm_sync.c:119:9
frame #5: 0x0000aaab617c1b30 miniruby`thread_sched_setup_running_threads [inlined] rb_vm_lock_enter(file=<unavailable>, line=597, lev=0x0000ffff215bfbe4) at vm_sync.h:75:9
frame #6: 0x0000aaab617c1b14 miniruby`thread_sched_setup_running_threads(vm=0x0000aaab9dea3320, add_th=0x0000aaab9df82980, del_th=<unavailable>, add_timeslice_th=0x0000000000000000, cr=<unavailable>, sched=<unavailable>, sched=<unavailable>) at thread_pthread.c:597:9
frame #7: 0x0000aaab617c29b4 miniruby`thread_sched_wait_running_turn at thread_pthread.c:614:5
frame ruby#8: 0x0000aaab617c298c miniruby`thread_sched_wait_running_turn(sched=0x0000aaab9dec79b8, th=0x0000aaab9df82980, can_direct_transfer=true) at thread_pthread.c:868:9
frame ruby#9: 0x0000aaab617c6f0c miniruby`thread_sched_wait_events(sched=0x0000aaab9dec79b8, th=0x0000aaab9df82980, fd=<unavailable>, events=<unavailable>, rel=<unavailable>) at thread_pthread_mn.c:90:17
frame ruby#10: 0x0000aaab617c7354 miniruby`rb_thread_terminate_all at thread_pthread.c:3248:13
frame ruby#11: 0x0000aaab617c733c miniruby`rb_thread_terminate_all(th=0x0000aaab9df82980) at thread.c:466:13
frame ruby#12: 0x0000aaab617c7a64 miniruby`thread_start_func_2(th=0x0000aaab9df82980, stack_start=<unavailable>) at thread.c:713:9
frame ruby#13: 0x0000aaab617c7d1c miniruby`co_start [inlined] call_thread_start_func_2(th=0x0000aaab9df82980) at thread_pthread.c:2165:5
frame ruby#14: 0x0000aaab617c7cd0 miniruby`co_start(from=<unavailable>, self=0x0000aaab9df0f760) at thread_pthread_mn.c:421:9
```
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* YJIT: A64: Use ADDS/SUBS/CMP (immediate) when possible We were loading 1 into a register and then doing ADDS/SUBS previously. That was particularly bad since those come up in fixnum operations. ```diff # integer left shift with rhs=1 - mov x11, #1 - subs x11, x1, x11 + subs x11, x1, #1 lsl x12, x11, #1 asr x13, x12, #1 cmp x13, x11 - b.ne #0x106ab60f8 - mov x11, #1 - adds x12, x12, x11 + b.ne #0x10903a0f8 + adds x12, x12, #1 mov x1, x12 ``` Note that it's fine to cast between i64 and u64 since the bit pattern is preserved, and the add/sub themselves don't care about the signedness of the operands. CMP is just another mnemonic for SUBS. * YJIT: A64: Split asm.mul() with immediates properly There is in fact no MUL on A64 that takes an immediate, so this instruction was using the wrong split method. No current usages of this form in YJIT. --------- Co-authored-by: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com>
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When Ruby is built with ASAN and RUBY_FREE_AT_EXIT is enabled, the
following error occurs:
READ of size 8 at 0x74c666610020 thread T0
#0 0x593b6712ecc6 in RB_BUILTIN_TYPE include/ruby/internal/value_type.h:191:30
#1 0x593b6712ecc6 in rb_gc_impl_shutdown_free_objects gc_impl.c:3208:17
#2 0x593b6749a62e in ruby_vm_destruct vm.c:3133:17
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During compilation, we write keyword default values into the iseq, so we should mark it to ensure it does not get GC'd. This might fix issues on ASAN like http://ci.rvm.jp/logfiles/brlog.trunk_asan.20240927-194923 ==805257==ERROR: AddressSanitizer: use-after-poison on address 0x7b7e5e3e2828 at pc 0x5e09ac4822f8 bp 0x7ffde56b0140 sp 0x7ffde56b0138 READ of size 8 at 0x7b7e5e3e2828 thread T0 #0 0x5e09ac4822f7 in RB_BUILTIN_TYPE include/ruby/internal/value_type.h:191:30 #1 0x5e09ac4822f7 in rbimpl_RB_TYPE_P_fastpath include/ruby/internal/value_type.h:352:19 #2 0x5e09ac4822f7 in gc_mark gc/default.c:4488:9 #3 0x5e09ac51011e in rb_iseq_mark_and_move iseq.c:361:17 #4 0x5e09ac4b85c4 in rb_imemo_mark_and_move imemo.c:386:9 #5 0x5e09ac467544 in rb_gc_mark_children gc.c:2508:9 #6 0x5e09ac482c24 in gc_mark_children gc/default.c:4673:5 #7 0x5e09ac482c24 in gc_mark_stacked_objects gc/default.c:4694:9 ruby#8 0x5e09ac482c24 in gc_mark_stacked_objects_all gc/default.c:4732:12 ruby#9 0x5e09ac48c7f9 in gc_marks_rest gc/default.c:5755:9 ruby#10 0x5e09ac48c7f9 in gc_marks gc/default.c:5870:9 ruby#11 0x5e09ac48c7f9 in gc_start gc/default.c:6517:13
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fill_lines is passed -1 for offset, which causes it to read the -1 index of traces. This is not valid memory as -1 is reading before the trace global variable in rb_print_backtrace. This code comes from commit 99d1f5f, where there used to be special handling for the -1 index. We can see this error in ASAN: ==71037==ERROR: AddressSanitizer: global-buffer-overflow on address 0x00010157abf8 at pc 0x00010116f3b8 bp 0x00016f92c3b0 sp 0x00016f92c3a8 READ of size 8 at 0x00010157abf8 thread T0 #0 0x10116f3b4 in debug_info_read addr2line.c:1945 #1 0x10116cc90 in fill_lines addr2line.c:2497 #2 0x101169dbc in rb_dump_backtrace_with_lines addr2line.c:2635 #3 0x100e56788 in rb_print_backtrace vm_dump.c:825 #4 0x100e56db4 in rb_vm_bugreport vm_dump.c:1155 #5 0x100734dc4 in rb_bug_without_die error.c:1085 #6 0x100734ae4 in rb_bug error.c:109
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[Bug #20921]
When we create a cache entry for a constant, the following sequence of
events could happen:
- vm_track_constant_cache is called to insert a constant cache.
- In vm_track_constant_cache, we first look up the ST table for the ID
of the constant. Assume the ST table exists because another iseq also
holds a cache entry for this ID.
- We then insert into this ST table with the iseq_inline_constant_cache.
- However, while inserting into this ST table, it allocates memory, which
could trigger a GC. Assume that it does trigger a GC.
- The GC frees the one and only other iseq that holds a cache entry for
this ID.
- In remove_from_constant_cache, it will appear that the ST table is now
empty because there are no more iseq with cache entries for this ID, so
we free the ST table.
- We complete GC and continue our st_insert. However, this ST table has
been freed so we now have a use-after-free.
This issue is very hard to reproduce, because it requires that the GC runs
at a very specific time. However, we can make it show up by applying this
patch which runs GC right before the st_insert to mimic the st_insert
triggering a GC:
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 3cb23f0..a93998136a 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -6338,6 +6338,10 @@ vm_track_constant_cache(ID id, void *ic)
rb_id_table_insert(const_cache, id, (VALUE)ics);
}
+ if (id == rb_intern("MyConstant")) rb_gc();
+
st_insert(ics, (st_data_t) ic, (st_data_t) Qtrue);
}
And if we run this script:
Object.const_set("MyConstant", "Hello!")
my_proc = eval("-> { MyConstant }")
my_proc.call
my_proc = eval("-> { MyConstant }")
my_proc.call
We can see that ASAN outputs a use-after-free error:
==36540==ERROR: AddressSanitizer: heap-use-after-free on address 0x606000049528 at pc 0x000102f3ceac bp 0x00016d607a70 sp 0x00016d607a68
READ of size 8 at 0x606000049528 thread T0
#0 0x102f3cea8 in do_hash st.c:321
#1 0x102f3ddd0 in rb_st_insert st.c:1132
#2 0x103140700 in vm_track_constant_cache vm_insnhelper.c:6345
#3 0x1030b91d8 in vm_ic_track_const_chain vm_insnhelper.c:6356
#4 0x1030b8cf8 in rb_vm_opt_getconstant_path vm_insnhelper.c:6424
#5 0x1030bc1e0 in vm_exec_core insns.def:263
#6 0x1030b55fc in rb_vm_exec vm.c:2585
#7 0x1030fe0ac in rb_iseq_eval_main vm.c:2851
ruby#8 0x102a82588 in rb_ec_exec_node eval.c:281
ruby#9 0x102a81fe0 in ruby_run_node eval.c:319
ruby#10 0x1027f3db4 in rb_main main.c:43
ruby#11 0x1027f3bd4 in main main.c:68
ruby#12 0x183900270 (<unknown module>)
0x606000049528 is located 8 bytes inside of 56-byte region [0x606000049520,0x606000049558)
freed by thread T0 here:
#0 0x104174d40 in free+0x98 (libclang_rt.asan_osx_dynamic.dylib:arm64e+0x54d40)
#1 0x102ada89c in rb_gc_impl_free default.c:8183
#2 0x102ada7dc in ruby_sized_xfree gc.c:4507
#3 0x102ac4d34 in ruby_xfree gc.c:4518
#4 0x102f3cb34 in rb_st_free_table st.c:663
#5 0x102bd52d8 in remove_from_constant_cache iseq.c:119
#6 0x102bbe2cc in iseq_clear_ic_references iseq.c:153
#7 0x102bbd2a0 in rb_iseq_free iseq.c:166
ruby#8 0x102b32ed0 in rb_imemo_free imemo.c:564
ruby#9 0x102ac4b44 in rb_gc_obj_free gc.c:1407
ruby#10 0x102af4290 in gc_sweep_plane default.c:3546
ruby#11 0x102af3bdc in gc_sweep_page default.c:3634
ruby#12 0x102aeb140 in gc_sweep_step default.c:3906
ruby#13 0x102aeadf0 in gc_sweep_rest default.c:3978
ruby#14 0x102ae4714 in gc_sweep default.c:4155
ruby#15 0x102af8474 in gc_start default.c:6484
ruby#16 0x102afbe30 in garbage_collect default.c:6363
ruby#17 0x102ad37f0 in rb_gc_impl_start default.c:6816
ruby#18 0x102ad3634 in rb_gc gc.c:3624
ruby#19 0x1031406ec in vm_track_constant_cache vm_insnhelper.c:6342
#20 0x1030b91d8 in vm_ic_track_const_chain vm_insnhelper.c:6356
ruby#21 0x1030b8cf8 in rb_vm_opt_getconstant_path vm_insnhelper.c:6424
ruby#22 0x1030bc1e0 in vm_exec_core insns.def:263
ruby#23 0x1030b55fc in rb_vm_exec vm.c:2585
ruby#24 0x1030fe0ac in rb_iseq_eval_main vm.c:2851
ruby#25 0x102a82588 in rb_ec_exec_node eval.c:281
ruby#26 0x102a81fe0 in ruby_run_node eval.c:319
ruby#27 0x1027f3db4 in rb_main main.c:43
ruby#28 0x1027f3bd4 in main main.c:68
ruby#29 0x183900270 (<unknown module>)
previously allocated by thread T0 here:
#0 0x104174c04 in malloc+0x94 (libclang_rt.asan_osx_dynamic.dylib:arm64e+0x54c04)
#1 0x102ada0ec in rb_gc_impl_malloc default.c:8198
#2 0x102acee44 in ruby_xmalloc gc.c:4438
#3 0x102f3c85c in rb_st_init_table_with_size st.c:571
#4 0x102f3c900 in rb_st_init_table st.c:600
#5 0x102f3c920 in rb_st_init_numtable st.c:608
#6 0x103140698 in vm_track_constant_cache vm_insnhelper.c:6337
#7 0x1030b91d8 in vm_ic_track_const_chain vm_insnhelper.c:6356
ruby#8 0x1030b8cf8 in rb_vm_opt_getconstant_path vm_insnhelper.c:6424
ruby#9 0x1030bc1e0 in vm_exec_core insns.def:263
ruby#10 0x1030b55fc in rb_vm_exec vm.c:2585
ruby#11 0x1030fe0ac in rb_iseq_eval_main vm.c:2851
ruby#12 0x102a82588 in rb_ec_exec_node eval.c:281
ruby#13 0x102a81fe0 in ruby_run_node eval.c:319
ruby#14 0x1027f3db4 in rb_main main.c:43
ruby#15 0x1027f3bd4 in main main.c:68
ruby#16 0x183900270 (<unknown module>)
This commit fixes this bug by adding a inserting_constant_cache_id field
to the VM, which stores the ID that is currently being inserted and, in
remove_from_constant_cache, we don't free the ST table for ID equal to
this one.
Co-Authored-By: Alan Wu <alanwu@ruby-lang.org>
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When searching for native extensions, if the name does not end in ".so" then we create a new string and append ".so" so it. If the native extension is in static_ext_inits, then we could trigger a GC in the rb_filesystem_str_new_cstr. This could cuase the GC to free lookup_name since we don't use the local variable anymore. This bug was caught in this ASAN build: http://ci.rvm.jp/results/trunk_asan@ruby-sp1/5479182 ==435614==ERROR: AddressSanitizer: use-after-poison on address 0x715a63022da0 at pc 0x5e7463873e4e bp 0x7fff383c8b00 sp 0x7fff383c82c0 READ of size 14 at 0x715a63022da0 thread T0 #0 0x5e7463873e4d in __asan_memcpy (/tmp/ruby/build/trunk_asan/ruby+0x214e4d) (BuildId: 607411c0626a2f66b4c20c02179b346aace20898) #1 0x5e7463b50a82 in memcpy /usr/include/x86_64-linux-gnu/bits/string_fortified.h:29:10 #2 0x5e7463b50a82 in ruby_nonempty_memcpy /tmp/ruby/src/trunk_asan/include/ruby/internal/memory.h:671:16 #3 0x5e7463b50a82 in str_enc_new /tmp/ruby/src/trunk_asan/string.c:1035:9 #4 0x5e74639b97dd in search_required /tmp/ruby/src/trunk_asan/load.c:1126:21 #5 0x5e74639b97dd in require_internal /tmp/ruby/src/trunk_asan/load.c:1274:17 #6 0x5e74639b83c1 in rb_require_string_internal /tmp/ruby/src/trunk_asan/load.c:1401:22 #7 0x5e74639b83c1 in rb_require_string /tmp/ruby/src/trunk_asan/load.c:1387:12
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…uby#13231) This change addresses the following ASAN error: ``` ==36597==ERROR: AddressSanitizer: heap-use-after-free on address 0x512000396ba8 at pc 0x7fcad5cbad9f bp 0x7fff19739af0 sp 0x7fff19739ae8 WRITE of size 8 at 0x512000396ba8 thread T0 [643/756] 36600=optparse/test_summary #0 0x7fcad5cbad9e in free_fast_fallback_getaddrinfo_entry /home/runner/work/ruby-dev-builder/ruby-dev-builder/ext/socket/raddrinfo.c:3046:22 #1 0x7fcad5c9fb48 in fast_fallback_inetsock_cleanup /home/runner/work/ruby-dev-builder/ruby-dev-builder/ext/socket/ipsocket.c:1179:17 #2 0x7fcadf3b611a in rb_ensure /home/runner/work/ruby-dev-builder/ruby-dev-builder/eval.c:1081:5 #3 0x7fcad5c9b44b in rsock_init_inetsock /home/runner/work/ruby-dev-builder/ruby-dev-builder/ext/socket/ipsocket.c:1289:20 #4 0x7fcad5ca22b8 in tcp_init /home/runner/work/ruby-dev-builder/ruby-dev-builder/ext/socket/tcpsocket.c:76:12 #5 0x7fcadf83ba70 in vm_call0_cfunc_with_frame /home/runner/work/ruby-dev-builder/ruby-dev-builder/./vm_eval.c:164:15 ... ``` A `struct fast_fallback_getaddrinfo_shared` is shared between the main thread and two child threads. This struct contains an array of `fast_fallback_getaddrinfo_entry`. `fast_fallback_getaddrinfo_entry` and `fast_fallback_getaddrinfo_shared` were freed separately, and if `fast_fallback_getaddrinfo_shared` was freed first and then an attempt was made to free a `fast_fallback_getaddrinfo_entry`, a `heap-use-after-free` could occur. This change avoids that possibility by separating the deallocation of the addrinfo memory held by `fast_fallback_getaddrinfo_entry` from the access and lifecycle of the `fast_fallback_getaddrinfo_entry` itself.
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3df4ab1Release 4.0.0 (#1447)8b5e8b7Support fetching without the --progress option (#1067)97a652bUpdate default runtime to node20 (#1436)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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