>From the backtrace at frist we see:
At the start of mysql it calls init_server_components -> delegates_init.
That then initializes a new object
alignas(Trans_delegate) static char place_trans_mem[sizeof(Trans_delegate)];
...
transaction_delegate = new (place_trans_mem) Trans_delegate;
That then triggers the allocation of a lock::Shared_spin_lock::Shared_spin_lock
Which itself uses the default constructor:
Shared_spin_lock() = default;
That then goes into memory::Aligned_atomic<long>::Aligned_atomic
There (at least to my naive view) it seems to go terribly wrong with it's size
assumptions because if sz is the size in bytes then
#6 0x0000003ff76389b8 in operator new (sz=18446744073709551615)
clearly is too much.
...
#6 0x0000003ff76389b8 in operator new (sz=18446744073709551615)
at ../../../../src/libstdc++-v3/libsupc++/new_op.cc:54
handler = <optimized out>
p = <optimized out>
#7 0x0000003ff76389d6 in operator new[] (sz=<optimized out>)
at ../../../../src/libstdc++-v3/libsupc++/new_opv.cc:32
No locals.
#8 0x0000002aac352ed8 in memory::Aligned_atomic<long>::Aligned_atomic (
this=0x2aae2463d0 <delegates_init()::place_trans_mem+112>)
at ./sql/memory/aligned_atomic.h:282
No locals.
#9 memory::Aligned_atomic<long>::Aligned_atomic (value=0,
this=0x2aae2463d0 <delegates_init()::place_trans_mem+112>)
at ./sql/memory/aligned_atomic.h:287
...
** Attachment added: "Backtrace of the issue in Hirsute rsicv64"
https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1915275/+attachment/5475790/+files/riscv64-libc2.33-hirsute-crash.backtrace
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https://bugs.launchpad.net/bugs/1915275
Title:
mysql-8.0 regressed on riscv64 due to new glibc
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