From: Will Deacon will.deacon@arm.com
[ Upstream commit 24951465cbd279f60b1fdc2421b3694405bcff42 ]
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks.
Cc: stable@vger.kernel.org # 4.9+ Cc: Aurelien Jarno aurelien@aurel32.net Cc: Arnd Bergmann arnd@arndb.de Cc: Dominik Brodowski linux@dominikbrodowski.net Cc: "Eric W. Biederman" ebiederm@xmission.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Al Viro viro@zeniv.linux.org.uk Cc: Oleg Nesterov oleg@redhat.com Reviewed-by: Dave Martin Dave.Martin@arm.com Reported-by: Steve McIntyre steve.mcintyre@arm.com Tested-by: Steve McIntyre 93sam@debian.org Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com ---
Aurelien points out that this didn't get selected for -stable despite its counterpart (22839869f21a ("signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack")) being backported to 4.9. Oops.
arch/arm64/include/asm/compat.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index 1a037b94eba1..cee28a05ee98 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -159,6 +159,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) }
#define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current))) +#define COMPAT_MINSIGSTKSZ 2048
static inline void __user *arch_compat_alloc_user_space(long len) {
On Tue, Jul 30, 2019 at 10:25:47AM +0100, Will Deacon wrote:
From: Will Deacon will.deacon@arm.com
[ Upstream commit 24951465cbd279f60b1fdc2421b3694405bcff42 ]
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks.
Cc: stable@vger.kernel.org # 4.9+ Cc: Aurelien Jarno aurelien@aurel32.net Cc: Arnd Bergmann arnd@arndb.de Cc: Dominik Brodowski linux@dominikbrodowski.net Cc: "Eric W. Biederman" ebiederm@xmission.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Al Viro viro@zeniv.linux.org.uk Cc: Oleg Nesterov oleg@redhat.com Reviewed-by: Dave Martin Dave.Martin@arm.com Reported-by: Steve McIntyre steve.mcintyre@arm.com Tested-by: Steve McIntyre 93sam@debian.org Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com
Aurelien points out that this didn't get selected for -stable despite its counterpart (22839869f21a ("signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack")) being backported to 4.9. Oops.
So this needs to go into 4.9.y, 4.14.y, and 4.19.y?
thanks,
greg k-h
On Tue, Jul 30, 2019 at 11:37:13AM +0200, Greg KH wrote:
On Tue, Jul 30, 2019 at 10:25:47AM +0100, Will Deacon wrote:
From: Will Deacon will.deacon@arm.com
[ Upstream commit 24951465cbd279f60b1fdc2421b3694405bcff42 ]
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks.
Cc: stable@vger.kernel.org # 4.9+ Cc: Aurelien Jarno aurelien@aurel32.net Cc: Arnd Bergmann arnd@arndb.de Cc: Dominik Brodowski linux@dominikbrodowski.net Cc: "Eric W. Biederman" ebiederm@xmission.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Al Viro viro@zeniv.linux.org.uk Cc: Oleg Nesterov oleg@redhat.com Reviewed-by: Dave Martin Dave.Martin@arm.com Reported-by: Steve McIntyre steve.mcintyre@arm.com Tested-by: Steve McIntyre 93sam@debian.org Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com
Aurelien points out that this didn't get selected for -stable despite its counterpart (22839869f21a ("signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack")) being backported to 4.9. Oops.
So this needs to go into 4.9.y, 4.14.y, and 4.19.y?
Yes, please.
Will
On Tue, Jul 30, 2019 at 10:39:38AM +0100, Will Deacon wrote:
On Tue, Jul 30, 2019 at 11:37:13AM +0200, Greg KH wrote:
On Tue, Jul 30, 2019 at 10:25:47AM +0100, Will Deacon wrote:
From: Will Deacon will.deacon@arm.com
[ Upstream commit 24951465cbd279f60b1fdc2421b3694405bcff42 ]
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks.
Cc: stable@vger.kernel.org # 4.9+ Cc: Aurelien Jarno aurelien@aurel32.net Cc: Arnd Bergmann arnd@arndb.de Cc: Dominik Brodowski linux@dominikbrodowski.net Cc: "Eric W. Biederman" ebiederm@xmission.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Al Viro viro@zeniv.linux.org.uk Cc: Oleg Nesterov oleg@redhat.com Reviewed-by: Dave Martin Dave.Martin@arm.com Reported-by: Steve McIntyre steve.mcintyre@arm.com Tested-by: Steve McIntyre 93sam@debian.org Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com
Aurelien points out that this didn't get selected for -stable despite its counterpart (22839869f21a ("signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack")) being backported to 4.9. Oops.
So this needs to go into 4.9.y, 4.14.y, and 4.19.y?
Yes, please.
Thanks, will do after this next round of kernels goes out.
greg k-h
On Tue, Jul 30, 2019 at 11:42:26AM +0200, Greg KH wrote:
On Tue, Jul 30, 2019 at 10:39:38AM +0100, Will Deacon wrote:
On Tue, Jul 30, 2019 at 11:37:13AM +0200, Greg KH wrote:
On Tue, Jul 30, 2019 at 10:25:47AM +0100, Will Deacon wrote:
From: Will Deacon will.deacon@arm.com
[ Upstream commit 24951465cbd279f60b1fdc2421b3694405bcff42 ]
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks.
Cc: stable@vger.kernel.org # 4.9+ Cc: Aurelien Jarno aurelien@aurel32.net Cc: Arnd Bergmann arnd@arndb.de Cc: Dominik Brodowski linux@dominikbrodowski.net Cc: "Eric W. Biederman" ebiederm@xmission.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Al Viro viro@zeniv.linux.org.uk Cc: Oleg Nesterov oleg@redhat.com Reviewed-by: Dave Martin Dave.Martin@arm.com Reported-by: Steve McIntyre steve.mcintyre@arm.com Tested-by: Steve McIntyre 93sam@debian.org Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com
Aurelien points out that this didn't get selected for -stable despite its counterpart (22839869f21a ("signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack")) being backported to 4.9. Oops.
So this needs to go into 4.9.y, 4.14.y, and 4.19.y?
Yes, please.
Thanks, will do after this next round of kernels goes out.
Now queued up, thanks.
greg k-h
On 2019-07-31 11:47, Greg KH wrote:
On Tue, Jul 30, 2019 at 11:42:26AM +0200, Greg KH wrote:
On Tue, Jul 30, 2019 at 10:39:38AM +0100, Will Deacon wrote:
On Tue, Jul 30, 2019 at 11:37:13AM +0200, Greg KH wrote:
On Tue, Jul 30, 2019 at 10:25:47AM +0100, Will Deacon wrote:
From: Will Deacon will.deacon@arm.com
[ Upstream commit 24951465cbd279f60b1fdc2421b3694405bcff42 ]
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks.
Cc: stable@vger.kernel.org # 4.9+ Cc: Aurelien Jarno aurelien@aurel32.net Cc: Arnd Bergmann arnd@arndb.de Cc: Dominik Brodowski linux@dominikbrodowski.net Cc: "Eric W. Biederman" ebiederm@xmission.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Al Viro viro@zeniv.linux.org.uk Cc: Oleg Nesterov oleg@redhat.com Reviewed-by: Dave Martin Dave.Martin@arm.com Reported-by: Steve McIntyre steve.mcintyre@arm.com Tested-by: Steve McIntyre 93sam@debian.org Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com
Aurelien points out that this didn't get selected for -stable despite its counterpart (22839869f21a ("signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack")) being backported to 4.9. Oops.
So this needs to go into 4.9.y, 4.14.y, and 4.19.y?
Yes, please.
Thanks, will do after this next round of kernels goes out.
Now queued up, thanks.
Thanks!
linux-stable-mirror@lists.linaro.org
-
Aurelien Jarno -
Greg KH -
Will Deacon