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Thu, 8 Feb 2024 04:20:49 -0500 (EST) Message-ID: <63a1738c-5755-4c2e-a4d4-f5047cdb3660@flygoat.com> Date: Thu, 8 Feb 2024 09:20:47 +0000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/3] Handle delay slot for extable lookup To: Oleg Nesterov , Thomas Bogendoerfer , Andrew Morton , Ben Hutchings Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, Xi Ruoyao , Linus Torvalds References: <20240202-exception_ip-v2-0-e6894d5ce705@flygoat.com> Content-Language: en-US From: Jiaxun Yang Autocrypt: addr=jiaxun.yang@flygoat.com; keydata= xsFNBFnp/kwBEADEHKlSYJNLpFE1HPHfvsxjggAIK3ZtHTj5iLuRkEHDPiyyiLtmIgimmD3+ XN/uu2k1FFbrYiYgMjpGCXeRtdCLqkd+g9V4kYMlgi4MPHLt3XEuHcoKD1Yd2qYPT/OiQeGM 6bPtGUZlgfOpze1XuqHQ2VMWATL+kLYzk6FUUL715t8J5J9TgZBvSy8zc6gvpp3awsCwjFSv X3fiPMTC2dIiiMh4rKQKGboI1c7svgu6blHpy/Q5pXlEVqfLc7tFTGnvUp95jsK639GD8Ht3 0fSBxHGrTslrT775Aqi+1IsbJKBOmxIuU9eUGBUaZ00beGE09ovxiz2n2JKXKKZklNqhzifb 6uyVCOKdckR8uGqzRuohxDS7vlDZfFD5Z5OhplFY/9q+2IjCrWMmbHGSWYs9VV52XGM+wiEG sM5bup03N2q1kDXUWJ+zNNYowuOJKN9uxF3jBjdXSDi3uJu/ZUL/mBqI58SkHq5NTaHypRoE 5BxVmgDMCGQe93adKHUNmt4HK28R506S7019+umg1bq5vA/ncmh/J2k8MFGPXqO8t1xVI2O5 qrRheRKu1oST46ZJ7vKET1UwgcXTZ1iwqFlA26/iKxXoL7R7/AqWrapokEsUzRblGcutGZ/b 4lJVOxxAWaRcajpWvwqscI2mUF++O7DxYbhOJ/EFY2rv0i6+/QARAQABzSVKaWF4dW4gWWFu ZyA8amlheHVuLnlhbmdAZmx5Z29hdC5jb20+wsGRBBMBCAA7AhsjAh4BAheABQsJCAcCBhUK CQgLAgQWAgMBFiEEmAN5vv6/v0d+oE75wRGUkHP8D2cFAmKcjj8CGQEACgkQwRGUkHP8D2fx LxAAuNjknjfMBXIwEDpY+L2KMMU4V5rvTBATQ0dHZZzTlmTJuEduj/YdlVo0uTClRr9qkfEr Nfdr/YIS6BN6Am1x6nF2PAqHu/MkTNNFSAFiABh35hcm032jhrZVqLgAPLeydwQguIR8KXQB pP6S/jL3c7mUvVkoYy2g5PE1eH1MPeBwkg/r/ib9qNJSTuJH3SXnfZ4zoynvf3ipqnHsn2Sa 90Ta0Bux6ZgXIVlTL+LRDU88LISTpjBITyzn5F6fNEArxNDQFm4yrbPNbpWJXml50AWqsywp q9jRpu9Ly4qX2szkruJ/EnnAuS/FbEd4Agx2KZFb6LxxGAr4useXn6vab9p1bwRVBzfiXzqR WeTRAqwmJtdvzyo3tpkLmNC/jC3UsjqgfyBtiDSQzq0pSu7baOjvCGiRgeDCRSWq/T3HGZug 02QAi0Wwt/k5DX7jJS4Z5AAkfimXG3gq2nhiA6R995bYRyO8nIa+jmkMlYRFkwWdead3i/a0 zrtUyfZnIyWxUOsqHrfsN45rF2b0wHGpnFUfnR3Paa4my1uuwfp4BI6ZDVSVjz0oFBJ5y39A DCvFSpJkiJM/q71Erhyqn6c1weRnMok3hmG0rZ8RCSh5t7HllmyUUWe4OT97d5dhI7K/rnhc ze8vkrTNT6/fOvyPFqpSgYRDXGz2qboX/P6MG3zOOARlnqgjEgorBgEEAZdVAQUBAQdAUBqi bYcf0EGVya3wlwRABMwYsMimlsLEzvE4cKwoZzEDAQgHwsF2BBgBCAAgFiEEmAN5vv6/v0d+ oE75wRGUkHP8D2cFAmWeqCMCGwwACgkQwRGUkHP8D2dXlw/8CGKNXDloh1d7v/jDgcPPmlXd lQ4hssICgi6D+9aj3qYChIyuaNncRsUEOYvTmZoCHgQ6ymUUUBDuuog1KpuP3Ap8Pa3r5Tr6 TXtOl6Zi23ZWsrmthuYtJ8Yn5brxs6KQ5k4vCTkbF8ukue4Xl4O0RVlaIgJihJHZTfd9rUZy QugM8X98iLuUqYHCq2bAXHOq9h+mTLrhdy09dUalFyhOVejWMftULGfoXnRVz6OaHSBjTz5P HwZDAFChOUUR6vh31Lac2exTqtY/g+TjiUbXUPDEzN4mENACF/Aw+783v5CSEkSNYNxrCdt8 5+MRdhcj7y1wGfnSsKubHTOkBQJSanNr0cZZlPsJK0gxB2YTG6Nin13oX8mV7sAa3vBqqwfj ZtjNA+Up9IJY4Iz5upykUDAtCcvm82UnJoe5bMuoiyVccuqd5K/058AAxWv8fIvB4bSgmGMM aAN9l7GLyi4NhsKCCcAGSc2YAsxFrH6whVqY6JIF+08n1kur5ULrEKHpTTeffwajCgZPWpFc 7Mg2PDpoOwdpKLKlmIpyDexGVH0Lj/ycBL8ujDYZ2tA9HhEaO4dW6zsQyt1v6mZffpWK+ZXb Cs8oFeACbrtNFF0nhNI6LUPH3oaVOkUoRQUYDuX6mIc4VTwMA8EoZlueKEHfZIKrRf2QYbOZ HVO98ZmbMeg= In-Reply-To: <20240202-exception_ip-v2-0-e6894d5ce705@flygoat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 0D2C714000F X-Stat-Signature: bos49utiib5o51a31crqp5oxhum5j84w X-HE-Tag: 1707384051-452025 X-HE-Meta: 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 paH7kl9o 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 在 2024/2/2 12:30, Jiaxun Yang 写道: > Hi all, > > This series fixed extable handling for architecture delay slot (MIPS). > > Please see previous discussions at [1]. > > There are some other places in kernel not handling delay slots properly, > such as uprobe and kgdb, I'll sort them later. A gentle ping :-) This series fixes a regression, perhaps it should go through fixes tree. Thanks - Jiaxun > > Thanks! > > [1]: https://lore.kernel.org/lkml/75e9fd7b08562ad9b456a5bdaacb7cc220311cc9.camel@xry111.site > > To: Oleg Nesterov > > To: Thomas Bogendoerfer > > To: Andrew Morton > To: Ben Hutchings > > Cc: > Cc: > > Cc: > > Cc: > > Signed-off-by: Jiaxun Yang > --- > Changes in v2: > - Reduce diffstat by implemente fallback macro in linux/ptrace.h (linus) > - Link to v1: https://lore.kernel.org/r/20240201-exception_ip-v1-0-aa26ab3ee0b5@flygoat.com > > --- > Jiaxun Yang (3): > ptrace: Introduce exception_ip arch hook > MIPS: Clear Cause.BD in instruction_pointer_set > mm/memory: Use exception ip to search exception tables > > arch/mips/include/asm/ptrace.h | 3 +++ > arch/mips/kernel/ptrace.c | 7 +++++++ > include/linux/ptrace.h | 4 ++++ > mm/memory.c | 4 ++-- > 4 files changed, 16 insertions(+), 2 deletions(-) > --- > base-commit: 06f658aadff0e483ee4f807b0b46c9e5cba62bfa > change-id: 20240131-exception_ip-194e4ad0e6ca > > Best regards, -- --- Jiaxun Yang