linux.git/arch/sparc/kernel/entry.S, branch v4.4.177 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git sparc: Fix system call tracing register handling. 2016-06-24T17:18:21+00:00 Mike Frysinger vapier@gentoo.org 2016-01-18T11:32:30+00:00 c9bc125c922e855055cd08b2ec064180218be161 [ Upstream commit 1a40b95374f680625318ab61d81958e949e0afe3 ] A system call trace trigger on entry allows the tracing process to inspect and potentially change the traced process's registers. Account for that by reloading the %g1 (syscall number) and %i0-%i5 (syscall argument) values. We need to be careful to revalidate the range of %g1, and reload the system call table entry it corresponds to into %l7. Reported-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David S. Miller <davem@davemloft.net> Tested-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 1a40b95374f680625318ab61d81958e949e0afe3 ]

A system call trace trigger on entry allows the tracing
process to inspect and potentially change the traced
process's registers.

Account for that by reloading the %g1 (syscall number)
and %i0-%i5 (syscall argument) values.  We need to be
careful to revalidate the range of %g1, and reload the
system call table entry it corresponds to into %l7.

Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sparc32: Fix exit flag passed from traced sys_sigreturn 2013-08-01T02:10:04+00:00 Kirill Tkhai tkhai@yandex.ru 2013-07-25T21:17:15+00:00 7a3b0f89e3fea680f93932691ca41a68eee7ab5e Pass 1 in %o1 to indicate that syscall_trace accounts exit. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> CC: David Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net> 
Pass 1 in %o1 to indicate that syscall_trace accounts exit.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc: switch to generic sigaltstack 2013-02-03T23:16:17+00:00 Al Viro viro@zeniv.linux.org.uk 2012-12-23T08:41:17+00:00 99b06feb0f7c99f171cb962d0e6a17f81625abd3 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
sparc32: switch to generic sys_execve() 2012-10-16T23:03:53+00:00 Al Viro viro@zeniv.linux.org.uk 2012-09-29T18:49:48+00:00 f7200d4c504a385b1b70f3bab379f99745f7ef6a Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
sparc32: switch to generic kernel_execve() 2012-10-16T23:03:53+00:00 Al Viro viro@zeniv.linux.org.uk 2012-09-28T18:20:01+00:00 ab3486813bbbd9e74efb4c130183f3994dada4bd Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
sparc32: switch to generic kernel_thread() 2012-10-16T23:03:52+00:00 Al Viro viro@zeniv.linux.org.uk 2012-09-27T19:21:21+00:00 c78e06430ea621ce59d20cb899a9a86bdcf4487b Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
sparc32: bury the remnants of LOWSYS tricks 2012-10-16T23:03:52+00:00 Al Viro viro@zeniv.linux.org.uk 2012-09-27T12:51:20+00:00 32942bc7a609a874f462e1168dbeae20dbc6b79f Time to end that depravity, let's bury the body. It's been 15 years, for crying out loud... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Time to end that depravity, let's bury the body.  It's been
15 years, for crying out loud...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
sparc32: introduce support for run-time patching for all shared assembler code 2012-05-28T06:52:49+00:00 Sam Ravnborg sam@ravnborg.org 2012-05-25T21:20:16+00:00 1ec8cf62338b950fdbf76bbdfa3064bc1c0b7a81 All users of MMUREGS ASI in kernel/ now uses run-time patching. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Daniel Hellstrom <daniel@gaisler.com> Cc: Konrad Eisele <konrad@gaisler.com> 
All users of MMUREGS ASI in kernel/ now uses run-time patching.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
sparc32,leon: always include leon_smp + leon_mm in build 2012-05-28T06:52:47+00:00 Sam Ravnborg sam@ravnborg.org 2012-05-25T21:20:14+00:00 3107948848ebc52b98ffd853f72065338bbc57e2 Fix-up leon specific assembler to use ASI_LEON_MMUREGS Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Daniel Hellstrom <daniel@gaisler.com> Cc: Konrad Eisele <konrad@gaisler.com> 
Fix-up leon specific assembler to use ASI_LEON_MMUREGS

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
sparc32: Move GET_PROCESSOR*_ID() out of asm/asmmacro.h 2012-05-20T04:22:11+00:00 David S. Miller davem@davemloft.net 2012-05-20T04:22:11+00:00 0bfcee9ad369aca590211a4a8fffd28f1ed39a82 GET_PROCESSOR4D_ID is completely unused, so delete it. Move GET_PROCESSOR4M_ID to the sun4m specific trap code which uses it. We now no longer need to include asm/asi.h Signed-off-by: David S. Miller <davem@davemloft.net> 
GET_PROCESSOR4D_ID is completely unused, so delete it.

Move GET_PROCESSOR4M_ID to the sun4m specific trap code
which uses it.

We now no longer need to include asm/asi.h

Signed-off-by: David S. Miller <davem@davemloft.net>