Johannes Berg adf9ae0d15 um: fix stub location calculation ... In commit 9f0b4807a4 ("um: rework userspace stubs to not hard-code stub location") I changed stub_segv_handler() to do a calculation with a pointer to a stack variable to find the data page that we're using for the stack and the rest of the data. This same commit was meant to do it as well for stub_clone_handler(), but the change inadvertently went into commit 84b2789d61 ("um: separate child and parent errors in clone stub") instead. This was reported to not be compiled correctly by gcc 5, causing the code to crash here. I'm not sure why, perhaps it's UB because the var isn't initialized? In any case, this trick always seemed bad, so just create a new inline function that does the calculation in assembly. Reported-by: subashab@codeaurora.org Fixes: 9f0b4807a4 ("um: rework userspace stubs to not hard-code stub location") Fixes: 84b2789d61 ("um: separate child and parent errors in clone stub") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>		2021-08-26 22:28:03 +02:00
..
archsetjmp.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
archsetjmp_32.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
archsetjmp_64.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
faultinfo.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
faultinfo_32.h	um: Remove SKAS3/4 support	2015-04-13 21:00:53 +02:00
faultinfo_64.h	um: Remove SKAS3/4 support	2015-04-13 21:00:53 +02:00
kernel-offsets.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mcontext.h
ptrace.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ptrace_32.h	um: Remove update_debugregs()	2018-10-29 22:23:11 +01:00
ptrace_64.h	um: add extended processor state save/restore support	2016-05-21 23:38:06 +02:00
ptrace_user.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
stub.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
stub_32.h	um: fix stub location calculation	2021-08-26 22:28:03 +02:00
stub_64.h	um: fix stub location calculation	2021-08-26 22:28:03 +02:00
syscalls.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
syscalls_32.h	sanitize rt_sigaction() situation a bit	2013-02-03 15:09:18 -05:00
syscalls_64.h
tls.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00