From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8646A15D5A4; Mon, 1 Jul 2024 00:15:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719792926; cv=none; b=h0tNGWwwHgG83M7rP57OqXnUjzicuN9JGQ/k3JvKJsErvYVQ7v0Lvd2H4GICRTMlkGkR3+qRcpMpbtiQBnZNU5Wk27+IVZJsbNygt+U3LCTuzBY2a2h8Cu9VP8W99OPmOsZhUqmZYEcKzzyKljmDTpgaV1nT/MwneWtbiStvQso= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719792926; c=relaxed/simple; bh=W4XKRM96NfZEDgWXn2Q2vfdWEruHWoR+teSwyVUiCIo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=r8raPQorRxhKNxDuu47uy1Gu87rXlTmOqBMYlRIsTEsIcQhwV2IjJMysONQVSmIBq5jAzYMNva/aZewUwYTJpLYlJqOLqTJ20iTajBznByREvHKLWBJsnbGeH1T+YyeAuLk1QWUJ5iM5sBbaBb8QLeBcFVZAuT8CdkHQXvZlUNY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iD+Wlrue; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iD+Wlrue" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D3BDC32786; Mon, 1 Jul 2024 00:15:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719792926; bh=W4XKRM96NfZEDgWXn2Q2vfdWEruHWoR+teSwyVUiCIo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iD+WlrueB1Jp6lwm3dUDc6fSXfjg6VVt19TgUH55092Gk+bznnim0HpjpqQrEYfmp XwowNVySHOmvo/4Ka8/48KQ9xcEuzn+SvhK2UHwq70E5Ygtod/fqsdIM1AFYbs5jXx VVw3SSbNpNQVL7NBUIHNCXz7sclc1Nfluhkr6NICocX7XNCKmZsm8p6OpTMevCyShi vqp92ABEqO1IKcJKgBN48BVopDRQegOp2h1eT0kn4ZP5qPkM/3s0F7xkbC/VWqTS/O WWI5iahwgjFaCCNR9+Fjm2Rfr0rTHEl6fSWElDdIrcaycZEwJsGeew3hwS/sdBsPr0 +GIGlK1oqy5xw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Arnd Bergmann , Thomas Bogendoerfer , Sasha Levin , geert@linux-m68k.org, peterz@infradead.org, tglx@linutronix.de, brauner@kernel.org, sohil.mehta@intel.com, casey@schaufler-ca.com, palmer@sifive.com, mszeredi@redhat.com, linux-mips@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 4/4] mips: fix compat_sys_lseek syscall Date: Sun, 30 Jun 2024 20:15:09 -0400 Message-ID: <20240701001514.2921545-4-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240701001514.2921545-1-sashal@kernel.org> References: <20240701001514.2921545-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.278 Content-Transfer-Encoding: 8bit From: Arnd Bergmann [ Upstream commit 0d5679a0aae2d8cda72169452c32e5cb88a7ab33 ] This is almost compatible, but passing a negative offset should result in a EINVAL error, but on mips o32 compat mode would seek to a large 32-bit byte offset. Use compat_sys_lseek() to correctly sign-extend the argument. Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/kernel/syscalls/syscall_o32.tbl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl index 353539ea4140a..5f2c2636e7a4f 100644 --- a/arch/mips/kernel/syscalls/syscall_o32.tbl +++ b/arch/mips/kernel/syscalls/syscall_o32.tbl @@ -27,7 +27,7 @@ 17 o32 break sys_ni_syscall # 18 was sys_stat 18 o32 unused18 sys_ni_syscall -19 o32 lseek sys_lseek +19 o32 lseek sys_lseek compat_sys_lseek 20 o32 getpid sys_getpid 21 o32 mount sys_mount compat_sys_mount 22 o32 umount sys_oldumount -- 2.43.0