From: Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org>
To: Vivek Das Mohapatra <vivek@collabora.com>, libc-alpha@sourceware.org
Subject: Re: [RFC][PATCH v12 7/8] Restore separate libc loading for the TLS/namespace storage test
Date: Mon, 9 Aug 2021 16:08:43 -0300 [thread overview]
Message-ID: <91286bd1-c80e-edfc-103a-78a016f08dfc@linaro.org> (raw)
In-Reply-To: <20210708163255.812-8-vivek@collabora.com>
On 08/07/2021 13:32, Vivek Das Mohapatra via Libc-alpha wrote:
> tst-tls-ie-dlmopen checks to see that new namespaces consume
> TLS memory as expected: This does not happen when new namespaces
> share the same libc instance (since TLS is allocated only when
> a new libc instance insitialises its threading infrastructure).
>
> Adding RTLD_ISOLATE to the dlmopen flags in the test restores
> the old behaviour which allows the test to check what it
> actually needs to.
LGTM, but this patch should be merged with the
'Implement dlmopen RTLD_SHARED flag (bug 22745)' one to be logically
consistent.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
> ---
> elf/tst-tls-ie-dlmopen.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/elf/tst-tls-ie-dlmopen.c b/elf/tst-tls-ie-dlmopen.c
> index a579d72d2d..e67017db2d 100644
> --- a/elf/tst-tls-ie-dlmopen.c
> +++ b/elf/tst-tls-ie-dlmopen.c
> @@ -53,7 +53,7 @@ static void *
> load_and_access (Lmid_t lmid, const char *mod, const char *func)
> {
> /* Load module with TLS. */
> - void *p = xdlmopen (lmid, mod, RTLD_NOW);
> + void *p = xdlmopen (lmid, mod, RTLD_NOW|RTLD_ISOLATE);
> /* Access the TLS variable to ensure it is allocated. */
> void (*f) (void) = (void (*) (void))xdlsym (p, func);
> f ();
> @@ -95,7 +95,7 @@ do_test (void)
> than 1024 bytes are available (exact number depends on TLS optimizations
> and the libc TLS use). */
> printf ("The next dlmopen should fail...\n");
> - void *p = dlmopen (LM_ID_BASE, "tst-tls-ie-mod4.so", RTLD_NOW);
> + void *p = dlmopen (LM_ID_BASE, "tst-tls-ie-mod4.so", RTLD_NOW|RTLD_ISOLATE);
> if (p != NULL)
> FAIL_EXIT1 ("error: expected dlmopen to fail because there is "
> "not enough surplus static TLS.\n");
>
next prev parent reply other threads:[~2021-08-09 19:10 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-08 16:32 [RFC][PATCH v12 0/8] Implementation of RTLD_SHARED for dlmopen Vivek Das Mohapatra via Libc-alpha
2021-07-08 16:32 ` [RFC][PATCH v12 1/8] Define a new dynamic section tag - DT_GNU_FLAGS_1 (bug 22745) Vivek Das Mohapatra via Libc-alpha
2021-08-09 12:27 ` Adhemerval Zanella via Libc-alpha
2021-07-08 16:32 ` [RFC][PATCH v12 2/8] Abstract loaded-DSO search code into a helper function Vivek Das Mohapatra via Libc-alpha
2021-08-09 13:04 ` Adhemerval Zanella via Libc-alpha
2021-07-08 16:32 ` [RFC][PATCH v12 3/8] Use the new DSO finder " Vivek Das Mohapatra via Libc-alpha
2021-08-09 12:59 ` Adhemerval Zanella via Libc-alpha
2021-07-08 16:32 ` [RFC][PATCH v12 4/8] Add DT_GNU_FLAGS_1/DF_GNU_1_UNIQUE to glibc DSOs (bug 22745) Vivek Das Mohapatra via Libc-alpha
2021-08-09 16:48 ` Adhemerval Zanella via Libc-alpha
2021-08-10 13:21 ` Adhemerval Zanella via Libc-alpha
2021-08-10 13:32 ` H.J. Lu via Libc-alpha
2021-07-08 16:32 ` [RFC][PATCH v12 5/8] Implement dlmopen RTLD_SHARED flag " Vivek Das Mohapatra via Libc-alpha
2021-08-09 19:07 ` Adhemerval Zanella via Libc-alpha
2021-08-09 20:24 ` Adhemerval Zanella via Libc-alpha
2021-08-09 20:30 ` Adhemerval Zanella via Libc-alpha
2021-07-08 16:32 ` [RFC][PATCH v12 6/8] Add dlmopen / RTLD_SHARED tests Vivek Das Mohapatra via Libc-alpha
2021-08-09 20:09 ` Adhemerval Zanella via Libc-alpha
2021-07-08 16:32 ` [RFC][PATCH v12 7/8] Restore separate libc loading for the TLS/namespace storage test Vivek Das Mohapatra via Libc-alpha
2021-08-09 19:08 ` Adhemerval Zanella via Libc-alpha [this message]
2021-07-08 16:32 ` [RFC][PATCH v12 8/8] Drop DT_GNU_FLAGS_1/DF_GNU_1_UNIQUE from the libpthread DSO Vivek Das Mohapatra via Libc-alpha
2021-08-09 20:10 ` Adhemerval Zanella via Libc-alpha
2021-08-09 21:24 ` Florian Weimer via Libc-alpha
2021-07-13 13:08 ` [External] : [RFC][PATCH v12 0/8] Implementation of RTLD_SHARED for dlmopen Alfonso Alfonso Peterssen via Libc-alpha
2021-08-09 20:34 ` Adhemerval Zanella via Libc-alpha
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