The problem seems to be in read_lib_segments (ps_core.c), this check is too harsh:
https://github.com/openjdk/jdk/blob/5271448b3a013b2e3edcd619a4a3b975b292dae1/src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c#L423-L425 In my run, `existing_map->memsz = 0xe24000`, while the rhs in L425 is `0xe23000`. According to the NT_FILE entry, this segment of `libjvm.so` has file offset 0x67f000. It seems that the linker aligned it down according to the page size (0x1000). The offset of the same segment according to `readelf -l libjvm.so` is 0x67fc80. This additional offset should be added to `p_memsz` to obtain the 0xe24000, which we see in the core dump. I added some files to the ticket for context. ------------- Commit messages: - fix - simple fix - fix - fix Changes: https://git.openjdk.org/jdk/pull/27274/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27274&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8367609 Stats: 8 lines in 1 file changed: 8 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/27274.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27274/head:pull/27274 PR: https://git.openjdk.org/jdk/pull/27274
