diff options
| author | Hans-Christian Egtvedt <hegtvedt@cisco.com> | 2020-04-02 17:28:19 +0200 |
|---|---|---|
| committer | Dave Watson <dade.watson@gmail.com> | 2020-04-29 08:35:19 -0700 |
| commit | a8b94341faf8b04d9041bbaecb54481b70295a6c (patch) | |
| tree | 6754c38b7db05ee4a3e1f394a959ddb23fc9519a | |
| parent | d866775860bcc8d26406c4b73bd1e285c7ea0c23 (diff) | |
| download | libunwind-a8b94341faf8b04d9041bbaecb54481b70295a6c.tar.gz | |
coredump: Unmap elf image before mapping another (#169)
Make sure to unmap the currently mapped elf image before mapping
another image in CD_get_proc_name. If not, the reference to that
image is lost and the memory is leaked.
Signed-off-by: Sturle Mastberg <smastber@cisco.com>
Signed-off-by: Hans-Christian Noren Egtvedt <hegtvedt@cisco.com>
| -rw-r--r-- | src/coredump/_UCD_get_proc_name.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/coredump/_UCD_get_proc_name.c b/src/coredump/_UCD_get_proc_name.c index 00096c48..3a4c9b82 100644 --- a/src/coredump/_UCD_get_proc_name.c +++ b/src/coredump/_UCD_get_proc_name.c @@ -36,6 +36,10 @@ elf_w (CD_get_proc_name) (struct UCD_info *ui, unw_addr_space_t as, unw_word_t i unsigned long segbase, mapoff; int ret; + /* We're about to map an elf image. If there is an elf image currently mapped, + then make sure to unmap it. */ + invalidate_edi(&ui->edi); + /* Used to be tdep_get_elf_image() in ptrace unwinding code */ coredump_phdr_t *cphdr = _UCD_get_elf_image(ui, ip); if (!cphdr) |