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Message-ID: <20240701001438.2921324-5-sashal@kernel.org> Date: Sun, 30 Jun 2024 20:14:33 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Arnd Bergmann <arnd@...db.de>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Sasha Levin <sashal@...nel.org>, geert@...ux-m68k.org, peterz@...radead.org, tglx@...utronix.de, kees@...nel.org, sohil.mehta@...el.com, mszeredi@...hat.com, casey@...aufler-ca.com, linux-mips@...r.kernel.org Subject: [PATCH AUTOSEL 5.15 5/5] mips: fix compat_sys_lseek syscall From: Arnd Bergmann <arnd@...db.de> [ 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 <arnd@...db.de> Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de> Signed-off-by: Sasha Levin <sashal@...nel.org> --- 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 a61c35edaa74c..0840175bda655 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 22 o32 umount sys_oldumount -- 2.43.0
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