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[ Upstream commit 480e1d5c64bb14441f79f2eb9421d5e26f91ea3d ] kexec_load_purgatory() derives image->start by locating e_entry inside an SHF_EXECINSTR section. If the purgatory object contains multiple executable sections with overlapping sh_addr, the entrypoint check can match more than once and trigger a WARN. Derive the entry section from the purgatory_start symbol when present and compute image->start from its final placement. Keep the existing e_entry fallback for purgatories that do not expose the symbol. WARNING: kernel/kexec_file.c:1009 at kexec_load_purgatory+0x395/0x3c0, CPU#10: kexec/1784 Call Trace: <TASK> bzImage64_load+0x133/0xa00 __do_sys_kexec_file_load+0x2b3/0x5c0 do_syscall_64+0x81/0x610 entry_SYSCALL_64_after_hwframe+0x76/0x7e [me@linux.beauty: move helper to avoid forward declaration, per Baoquan] Link: https://lkml.kernel.org/r/20260128043511.316860-1-me@linux.beauty Link: https://lkml.kernel.org/r/20260120124005.148381-1-me@linux.beauty Fixes: 8652d44f466a ("kexec: support purgatories with .text.hot sections") Signed-off-by: Li Chen <me@linux.beauty> Acked-by: Baoquan He <bhe@redhat.com> Cc: Alexander Graf <graf@amazon.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Li Chen <me@linux.beauty> Cc: Philipp Rudo <prudo@redhat.com> Cc: Ricardo Ribalda Delgado <ribalda@chromium.org> Cc: Ross Zwisler <zwisler@google.com> Cc: Sourabh Jain <sourabhjain@linux.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Ulrich Hecht <uli@kernel.org>