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
..
asm	um: elf.h: Fix W=1 warning for empty body in 'do' statement	2021-04-15 23:10:50 +02:00
os-Linux	um: remove process stub VMA	2021-02-12 21:37:38 +01:00
shared/sysdep	um: fix stub location calculation	2021-08-26 22:28:03 +02:00
vdso	kbuild: remove cc-option test of -fno-stack-protector	2020-07-07 11:13:10 +09:00
bugs_32.c
bugs_64.c
checksum_32.S
delay.c
elfcore.c
fault.c
Kconfig	kbuild: use KBUILD_DEFCONFIG as the fallback for DEFCONFIG_LIST	2020-03-03 20:49:21 +09:00
ldt.c
Makefile	um: Add 2 missing libs to fix various build errors	2021-04-15 23:10:40 +02:00
mem_32.c
mem_64.c
ptrace_32.c
ptrace_64.c	um: Remove dead usage of TIF_IA32	2020-10-11 23:19:36 +02:00
ptrace_user.c
setjmp_32.S
setjmp_64.S
signal.c
stub_32.S	um: rework userspace stubs to not hard-code stub location	2021-02-12 21:35:02 +01:00
stub_64.S	um: rework userspace stubs to not hard-code stub location	2021-02-12 21:35:02 +01:00
stub_segv.c	um: fix stub location calculation	2021-08-26 22:28:03 +02:00
sys_call_table_32.c	x86/uml/syscalls: Remove array index from syscall initializers	2021-05-25 16:59:23 +02:00
sys_call_table_64.c	x86/uml/syscalls: Remove array index from syscall initializers	2021-05-25 16:59:23 +02:00
syscalls_32.c
syscalls_64.c
sysrq_32.c
sysrq_64.c
tls_32.c	um: Implement copy_thread_tls	2020-01-07 13:31:29 +01:00
tls_64.c	um: Implement copy_thread_tls	2020-01-07 13:31:29 +01:00
user-offsets.c	um: Some fixes to build UML with musl	2020-10-11 23:13:06 +02:00