[LTP] [PATCH] io_submit: Use TST_PTR_TO_UINT() for aio_buf

[LTP] [PATCH] io_submit: Use TST_PTR_TO_UINT() for aio_buf

[Victor Cheng-Yen Yang via ltp]

From: Victor Cheng-Yen Yang <cyyang772@andestech.com>

GCC sign-extends a 32-bit pointer cast straight to a 64-bit integer, so
a buffer at or above 0x80000000 is passed as 0xffffffff8xxxxxxx and
io_submit() fails with EINVAL. The static buffer can land there in a
PIE binary with ASLR, and io_submit02 and io_submit03 then fail
intermittently.

Fixes: 7fb2b884ae8f ("syscalls/io_submit: Add io_submit02 test for native AIO")
Fixes: cd99e77be2ef ("syscalls/io_submit: Add io_submit03 test for native AIO")
Signed-off-by: Victor Cheng-Yen Yang <cyyang772@andestech.com>
---
 testcases/kernel/syscalls/io_submit/io_submit02.c | 2 +-
 testcases/kernel/syscalls/io_submit/io_submit03.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/testcases/kernel/syscalls/io_submit/io_submit02.c b/testcases/kernel/syscalls/io_submit/io_submit02.c
index 36e9c29f93..ab9d6ee35a 100644
--- a/testcases/kernel/syscalls/io_submit/io_submit02.c
+++ b/testcases/kernel/syscalls/io_submit/io_submit02.c
@@ -45,7 +45,7 @@ static inline void io_prep_option(struct iocb *cb, int fd, void *buf,
 	memset(cb, 0, sizeof(*cb));
 	cb->aio_fildes = fd;
 	cb->aio_lio_opcode = opcode;
-	cb->aio_buf = (uint64_t)buf;
+	cb->aio_buf = TST_PTR_TO_UINT(buf);
 	cb->aio_offset = offset;
 	cb->aio_nbytes = count;
 }
diff --git a/testcases/kernel/syscalls/io_submit/io_submit03.c b/testcases/kernel/syscalls/io_submit/io_submit03.c
index 45903107d7..dd7e7217de 100644
--- a/testcases/kernel/syscalls/io_submit/io_submit03.c
+++ b/testcases/kernel/syscalls/io_submit/io_submit03.c
@@ -71,7 +71,7 @@ static inline void io_prep_option(struct iocb *cb, int fd, void *buf,
 	memset(cb, 0, sizeof(*cb));
 	cb->aio_fildes = fd;
 	cb->aio_lio_opcode = opcode;
-	cb->aio_buf = (uint64_t)buf;
+	cb->aio_buf = TST_PTR_TO_UINT(buf);
 	cb->aio_offset = offset;
 	cb->aio_nbytes = count;
 }
-- 
2.55.0


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Re: [LTP] io_submit: Use TST_PTR_TO_UINT() for aio_buf

[linuxtestproject.agent]

Hi Victor,

On Fri Oct 30 08:57:18 2026 +0800, Victor Cheng-Yen Yang wrote:
> io_submit: Use TST_PTR_TO_UINT() for aio_buf

Verdict - Reviewed

---
Note:

The agent can sometimes produce false positives although often its
findings are genuine. If you find issues with the review, please
comment this email or ignore the suggestions.

Regards,
LTP AI Reviewer

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