CPU constraint detected (sustained >90% for 5+ minutes)

    ==17176==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x50c00043d7c0 at pc 0x7f6554e7a3fe bp 0x7f64f38104a0 sp 0x7f64f380fc60
    WRITE of size 108 at 0x50c00043d7c0 thread T145
        #0 0x7f6554e7a3fd in __asan_memcpy /data/mci/d8bac24a3d5110df1e64965da652156b/toolchain-builder/tmp/build-llvm-v5.sh-SLw/llvm-project-llvmorg/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cpp:63:3
        #1 0x7f65543954b3 in __pack_write /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/include/packing_inline.h:432:13
        #2 0x7f655438d230 in __wt_struct_packv /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/include/packing_inline.h:653:9
        #3 0x7f655438b884 in __wt_struct_pack /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/packing/pack_impl.c:82:11
        #4 0x7f6554717aac in __wt_checkpoint_log /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/txn/txn_log.c:554:9
        #5 0x7f6553eed480 in __checkpoint_log_stage /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:1541:9
        #6 0x7f6553eeb2e3 in __checkpoint_db_internal /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:2071:5
        #7 0x7f6553edff52 in __checkpoint_db_wrapper /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:2110:11
        #8 0x7f6553edf657 in __wt_checkpoint_db /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:2186:9
        #9 0x7f655457a424 in __session_checkpoint /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/session/session_api.c:2511:11
        #10 0x55c8dd6627c7 in checkpoint /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/test/format/checkpoint.c:138:15
        #11 0x7f6554e79f96 in asan_thread_start(void*) /data/mci/d8bac24a3d5110df1e64965da652156b/toolchain-builder/tmp/build-llvm-v5.sh-SLw/llvm-project-llvmorg/compiler-rt/lib/asan/asan_interceptors.cpp:239:28
        #12 0x7f655387b608 in start_thread /build/glibc-FcRMwW/glibc-2.31/nptl/pthread_create.c:477:8
        #13 0x7f65537a0352 in __clone /build/glibc-FcRMwW/glibc-2.31/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
    0x50c00043d7c0 is located 0 bytes after 128-byte region [0x50c00043d740,0x50c00043d7c0)
    allocated by thread T145 here:
        #0 0x7f6554e7c9ac in realloc /data/mci/d8bac24a3d5110df1e64965da652156b/toolchain-builder/tmp/build-llvm-v5.sh-SLw/llvm-project-llvmorg/compiler-rt/lib/asan/asan_malloc_linux.cpp:82:3
        #1 0x7f6554355764 in __realloc_func /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/os_common/os_alloc.c:160:18
        #2 0x7f655435598e in __wt_realloc_noclear /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/os_common/os_alloc.c:198:13
        #3 0x7f6554653f80 in __wt_buf_grow_worker /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/support/scratch.c:52:9
        #4 0x7f655465aaad in __wt_buf_grow /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/include/buf_inline.h:24:9
        #5 0x7f6554659e77 in __wt_buf_init /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/include/buf_inline.h:57:13
        #6 0x7f655465930e in __wt_scr_alloc_func /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/support/scratch.c:350:5
        #7 0x7f65542d70f9 in __wt_logrec_alloc /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/log/log_auto.c:131:5
        #8 0x7f65547178e4 in __wt_checkpoint_log /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/txn/txn_log.c:552:9
        #9 0x7f6553eed480 in __checkpoint_log_stage /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:1541:9
        #10 0x7f6553eeb2e3 in __checkpoint_db_internal /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:2071:5
        #11 0x7f6553edff52 in __checkpoint_db_wrapper /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:2110:11
        #12 0x7f6553edf657 in __wt_checkpoint_db /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/checkpoint/checkpoint_txn.c:2186:9
        #13 0x7f655457a424 in __session_checkpoint /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/session/session_api.c:2511:11
        #14 0x55c8dd6627c7 in checkpoint /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/test/format/checkpoint.c:138:15
        #15 0x7f6554e79f96 in asan_thread_start(void*) /data/mci/d8bac24a3d5110df1e64965da652156b/toolchain-builder/tmp/build-llvm-v5.sh-SLw/llvm-project-llvmorg/compiler-rt/lib/asan/asan_interceptors.cpp:239:28
    Thread T145 created by T0 here:
        #0 0x7f6554e61d61 in pthread_create /data/mci/d8bac24a3d5110df1e64965da652156b/toolchain-builder/tmp/build-llvm-v5.sh-SLw/llvm-project-llvmorg/compiler-rt/lib/asan/asan_interceptors.cpp:250:3
        #1 0x7f655437b34c in __wt_thread_create /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/os_posix/os_thread.c:71:5
        #2 0x55c8dd6911c6 in operations /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/test/format/ops.c:414:9
        #3 0x55c8dd6bac12 in main /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/test/format/t.c:424:13
        #4 0x7f65536a5082 in __libc_start_main /build/glibc-FcRMwW/glibc-2.31/csu/../csu/libc-start.c:308:16

    SUMMARY: AddressSanitizer: heap-buffer-overflow /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/src/include/packing_inline.h:432:13 in __pack_write

    Shadow bytes around the buggy address:
      0x50c00043d500: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
      0x50c00043d580: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
      0x50c00043d600: 00 00 00 00 00 00 00 fa fa fa fa fa fa fa fa fa
      0x50c00043d680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05
      0x50c00043d700: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
    =>0x50c00043d780: 00 00 00 00 00 00 00 00[fa]fa fa fa fa fa fa fa
      0x50c00043d800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06 fa
      0x50c00043d880: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x50c00043d900: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x50c00043d980: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x50c00043da00: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
    Shadow byte legend (one shadow byte represents 8 application bytes):
      Addressable:           00
      Partially addressable: 01 02 03 04 05 06 07
      Heap left redzone:       fa
      Freed heap region:       fd
      Stack left redzone:      f1
      Stack mid redzone:       f2
      Stack right redzone:     f3
      Stack after return:      f5
      Stack use after scope:   f8
      Global redzone:          f9
      Global init order:       f6
      Poisoned by user:        f7
      Container overflow:      fc
      Array cookie:            ac
      Intra object redzone:    bb
      ASan internal:           fe
      Left alloca redzone:     ca
      Right alloca redzone:    cb

test/format run configuration highlights

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f65536a3859 in __GI_abort () at abort.c:79
#2  0x00007f6554dc728c in __sanitizer::Abort() () from /opt/mongodbtoolchain/revisions/93d85cc1a00ca1d53fcc7d4ca790f19a4e5dd542/stow/llvm-v5.7Jt/lib/clang/19/lib/x86_64-mongodb-linux/libclang_rt.asan.so
#3  0x00007f6554dc51ee in __sanitizer::Die() () from /opt/mongodbtoolchain/revisions/93d85cc1a00ca1d53fcc7d4ca790f19a4e5dd542/stow/llvm-v5.7Jt/lib/clang/19/lib/x86_64-mongodb-linux/libclang_rt.asan.so
#4  0x00007f6554e81459 in __asan::ScopedInErrorReport::~ScopedInErrorReport() () from /opt/mongodbtoolchain/revisions/93d85cc1a00ca1d53fcc7d4ca790f19a4e5dd542/stow/llvm-v5.7Jt/lib/clang/19/lib/x86_64-mongodb-linux/libclang_rt.asan.so
#5  0x00007f6554e84757 in __asan::ReportGenericError(unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long, unsigned int, bool) () from /opt/mongodbtoolchain/revisions/93d85cc1a00ca1d53fcc7d4ca790f19a4e5dd542/stow/llvm-v5.7Jt/lib/clang/19/lib/x86_64-mongodb-linux/libclang_rt.asan.so
#6  0x00007f6554e7a431 in __asan_memcpy () from /opt/mongodbtoolchain/revisions/93d85cc1a00ca1d53fcc7d4ca790f19a4e5dd542/stow/llvm-v5.7Jt/lib/clang/19/lib/x86_64-mongodb-linux/libclang_rt.asan.so
#7  0x00007f65543954b4 in __pack_write () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#8  0x00007f655438d231 in __wt_struct_packv () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#9  0x00007f655438b885 in __wt_struct_pack () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#10 0x00007f6554717aad in __wt_checkpoint_log () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#11 0x00007f6553eed481 in __checkpoint_log_stage () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#12 0x00007f6553eeb2e4 in __checkpoint_db_internal () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#13 0x00007f6553edff53 in __checkpoint_db_wrapper () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#14 0x00007f6553edf658 in __wt_checkpoint_db () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#15 0x00007f655457a425 in __session_checkpoint () from /data/mci/eeeb5a634aa2addf019336d5a14a00ce/wiredtiger/cmake_build/test/format/../../libwiredtiger.so.12.0.0
#16 0x000055c8dd6627c8 in checkpoint ()
#17 0x00007f6554e79f97 in asan_thread_start(void*) () from /opt/mongodbtoolchain/revisions/93d85cc1a00ca1d53fcc7d4ca790f19a4e5dd542/stow/llvm-v5.7Jt/lib/clang/19/lib/x86_64-mongodb-linux/libclang_rt.asan.so
#18 0x00007f655387b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#19 0x00007f65537a0353 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95