From: Bruce Richardson <bruce.richardson@intel.com>
To: David Marchand <david.marchand@redhat.com>
Cc: <dev@dpdk.org>, <stable@dpdk.org>,
Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>,
Olivier Matz <olivier.matz@6wind.com>,
"Gage Eads" <gage.eads@intel.com>
Subject: Re: [PATCH v2 09/10] stack: fix unaligned accesses on 128-bit
Date: Mon, 30 Jun 2025 16:33:25 +0100 [thread overview]
Message-ID: <aGKuRTCeQGLXiu6T@bricha3-mobl1.ger.corp.intel.com> (raw)
In-Reply-To: <20250623135242.461965-10-david.marchand@redhat.com>
On Mon, Jun 23, 2025 at 03:52:39PM +0200, David Marchand wrote:
> Caught by UBSan:
>
> ../lib/eal/x86/include/rte_atomic_64.h:206:21: runtime error:
> member access within misaligned address 0x7ffd9c67f228 for
> type 'const rte_int128_t', which requires 16 byte alignment
> 0x7ffd9c67f228: note: pointer points here
> 00 00 00 00 c0 5d 3e 00 01 00 00 00 01 00 00 00 00 00 00 00
> ^
> 00 00 00 00 00 00 00 00 00 00 00 00
> SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
> ../lib/eal/x86/include/rte_atomic_64.h:206:21 in
> ../lib/eal/x86/include/rte_atomic_64.h:206:21: runtime error:
> member access within misaligned address 0x7ffd9c67f228 for type
> 'const union rte_int128_t::(anonymous at
> ../lib/eal/include/generic/rte_atomic.h:1102:2)', which requires
> 16 byte alignment
> 0x7ffd9c67f228: note: pointer points here
> 00 00 00 00 c0 5d 3e 00 01 00 00 00 01 00 00 00 00 00 00 00
> ^
> 00 00 00 00 00 00 00 00 00 00 00 00
> SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
> ../lib/eal/x86/include/rte_atomic_64.h:206:21 in
> ../lib/eal/x86/include/rte_atomic_64.h:206:16: runtime error:
> load of misaligned address 0x7ffd9c67f228 for type
> 'const uint64_t' (aka 'const unsigned long'), which requires
> 16 byte alignment
> 0x7ffd9c67f228: note: pointer points here
> 00 00 00 00 c0 5d 3e 00 01 00 00 00 01 00 00 00 00 00 00 00
> ^
> 00 00 00 00 00 00 00 00 00 00 00 00
> SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
> ../lib/eal/x86/include/rte_atomic_64.h:206:21 in
>
> Fixes: 3340202f5954 ("stack: add lock-free implementation")
> Cc: stable@dpdk.org
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
next prev parent reply other threads:[~2025-06-30 15:33 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-19 7:10 [PATCH 00/10] Run with UBSan in GHA David Marchand
2025-06-19 7:10 ` [PATCH 01/10] ci: save ccache on failure David Marchand
2025-06-25 12:16 ` Aaron Conole
2025-06-19 7:10 ` [PATCH 02/10] test/telemetry: fix test calling all commands David Marchand
2025-06-20 9:16 ` Bruce Richardson
2025-06-23 9:54 ` David Marchand
2025-06-19 7:10 ` [PATCH 03/10] test/mempool: fix test without stack driver David Marchand
2025-06-20 8:54 ` Andrew Rybchenko
2025-06-19 7:10 ` [PATCH 04/10] eal: fix plugin dir walk David Marchand
2025-06-20 9:19 ` Bruce Richardson
2025-06-23 9:41 ` David Marchand
2025-06-19 7:10 ` [PATCH 05/10] cmdline: fix port list parsing David Marchand
2025-06-20 9:58 ` Bruce Richardson
2025-06-23 9:40 ` David Marchand
2025-06-23 10:41 ` Bruce Richardson
2025-06-19 7:10 ` [PATCH 06/10] cmdline: fix highest bit " David Marchand
2025-06-20 9:21 ` Bruce Richardson
2025-06-23 9:32 ` David Marchand
2025-06-19 7:10 ` [PATCH 07/10] tailq: fix cast macro for null pointer David Marchand
2025-06-20 9:23 ` Bruce Richardson
2025-06-19 7:10 ` [PATCH 08/10] hash: fix unaligned access in predictable RSS David Marchand
2025-06-19 7:10 ` [PATCH 09/10] stack: fix unaligned accesses on 128-bit David Marchand
2025-06-19 7:10 ` [PATCH 10/10] build: support Undefined Behavior Sanitizer David Marchand
2025-06-25 12:17 ` Aaron Conole
2025-06-23 13:52 ` [PATCH v2 00/10] Run with UBSan in GHA David Marchand
2025-06-23 13:52 ` [PATCH v2 01/10] ci: save ccache on failure David Marchand
2025-06-23 13:52 ` [PATCH v2 02/10] test/telemetry: fix test calling all commands David Marchand
2025-06-24 15:59 ` Marat Khalili
2025-06-26 8:32 ` David Marchand
2025-06-26 9:51 ` Marat Khalili
2025-06-23 13:52 ` [PATCH v2 03/10] test/mempool: fix test without stack driver David Marchand
2025-06-24 16:21 ` Marat Khalili
2025-06-23 13:52 ` [PATCH v2 04/10] eal: fix plugin dir walk David Marchand
2025-06-25 8:43 ` Marat Khalili
2025-06-23 13:52 ` [PATCH v2 05/10] cmdline: fix port list parsing David Marchand
2025-06-23 14:00 ` Bruce Richardson
2025-06-26 9:32 ` Marat Khalili
2025-06-23 13:52 ` [PATCH v2 06/10] cmdline: fix highest bit " David Marchand
2025-06-30 15:25 ` Marat Khalili
2025-06-23 13:52 ` [PATCH v2 07/10] tailq: fix cast macro for null pointer David Marchand
2025-06-30 16:06 ` Marat Khalili
2025-06-23 13:52 ` [PATCH v2 08/10] hash: fix unaligned access in predictable RSS David Marchand
2025-06-30 15:32 ` Bruce Richardson
2025-07-01 8:36 ` Konstantin Ananyev
2025-06-23 13:52 ` [PATCH v2 09/10] stack: fix unaligned accesses on 128-bit David Marchand
2025-06-30 15:33 ` Bruce Richardson [this message]
2025-06-23 13:52 ` [PATCH v2 10/10] build: support Undefined Behavior Sanitizer David Marchand
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