From ecf017be9d73fb84501d03d92c0e2506180e31e1 Mon Sep 17 00:00:00 2001 From: geos_one Date: Thu, 7 Oct 2010 04:41:03 +0000 Subject: [PATCH] remeve x86 hotfixes git-svn-id: https://svn.disconnected-by-peer.at/svn/linamh/trunk/genlink@2486 6952d904-891a-0410-993b-d76249ca496b --- ...01c70d8a0144ac1d038f6876c484849a74de.patch | 97 --------- ...68a513c71e35a14f66d71782d27a79a81ea6.patch | 190 ------------------ ...ca043e8391dcd719711716492063030b55ac.patch | 49 ----- 3 files changed, 336 deletions(-) delete mode 100644 sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-36d001c70d8a0144ac1d038f6876c484849a74de.patch delete mode 100644 sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-c41d68a513c71e35a14f66d71782d27a79a81ea6.patch delete mode 100644 sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-eefdca043e8391dcd719711716492063030b55ac.patch diff --git a/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-36d001c70d8a0144ac1d038f6876c484849a74de.patch b/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-36d001c70d8a0144ac1d038f6876c484849a74de.patch deleted file mode 100644 index 15ff0ca..0000000 --- a/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-36d001c70d8a0144ac1d038f6876c484849a74de.patch +++ /dev/null @@ -1,97 +0,0 @@ -From 36d001c70d8a0144ac1d038f6876c484849a74de Mon Sep 17 00:00:00 2001 -From: H. Peter Anvin -Date: Tue, 14 Sep 2010 12:42:41 -0700 -Subject: [PATCH] x86-64, compat: Test %rax for the syscall number, not %eax - -On 64 bits, we always, by necessity, jump through the system call -table via %rax. For 32-bit system calls, in theory the system call -number is stored in %eax, and the code was testing %eax for a valid -system call number. At one point we loaded the stored value back from -the stack to enforce zero-extension, but that was removed in checkin -d4d67150165df8bf1cc05e532f6efca96f907cab. An actual 32-bit process -will not be able to introduce a non-zero-extended number, but it can -happen via ptrace. - -Instead of re-introducing the zero-extension, test what we are -actually going to use, i.e. %rax. This only adds a handful of REX -prefixes to the code. - -Reported-by: Ben Hawkes -Signed-off-by: H. Peter Anvin -Cc: -Cc: Roland McGrath -Cc: Andrew Morton ---- - arch/x86/ia32/ia32entry.S | 14 +++++++------- - 1 files changed, 7 insertions(+), 7 deletions(-) - -diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S -index b86feab..84e3a4e 100644 ---- a/arch/x86/ia32/ia32entry.S -+++ b/arch/x86/ia32/ia32entry.S -@@ -153,7 +153,7 @@ ENTRY(ia32_sysenter_target) - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) - CFI_REMEMBER_STATE - jnz sysenter_tracesys -- cmpl $(IA32_NR_syscalls-1),%eax -+ cmpq $(IA32_NR_syscalls-1),%rax - ja ia32_badsys - sysenter_do_call: - IA32_ARG_FIXUP -@@ -195,7 +195,7 @@ sysexit_from_sys_call: - movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */ - call audit_syscall_entry - movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */ -- cmpl $(IA32_NR_syscalls-1),%eax -+ cmpq $(IA32_NR_syscalls-1),%rax - ja ia32_badsys - movl %ebx,%edi /* reload 1st syscall arg */ - movl RCX-ARGOFFSET(%rsp),%esi /* reload 2nd syscall arg */ -@@ -248,7 +248,7 @@ sysenter_tracesys: - call syscall_trace_enter - LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */ - RESTORE_REST -- cmpl $(IA32_NR_syscalls-1),%eax -+ cmpq $(IA32_NR_syscalls-1),%rax - ja int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */ - jmp sysenter_do_call - CFI_ENDPROC -@@ -314,7 +314,7 @@ ENTRY(ia32_cstar_target) - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) - CFI_REMEMBER_STATE - jnz cstar_tracesys -- cmpl $IA32_NR_syscalls-1,%eax -+ cmpq $IA32_NR_syscalls-1,%rax - ja ia32_badsys - cstar_do_call: - IA32_ARG_FIXUP 1 -@@ -367,7 +367,7 @@ cstar_tracesys: - LOAD_ARGS32 ARGOFFSET, 1 /* reload args from stack in case ptrace changed it */ - RESTORE_REST - xchgl %ebp,%r9d -- cmpl $(IA32_NR_syscalls-1),%eax -+ cmpq $(IA32_NR_syscalls-1),%rax - ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */ - jmp cstar_do_call - END(ia32_cstar_target) -@@ -425,7 +425,7 @@ ENTRY(ia32_syscall) - orl $TS_COMPAT,TI_status(%r10) - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) - jnz ia32_tracesys -- cmpl $(IA32_NR_syscalls-1),%eax -+ cmpq $(IA32_NR_syscalls-1),%rax - ja ia32_badsys - ia32_do_call: - IA32_ARG_FIXUP -@@ -444,7 +444,7 @@ ia32_tracesys: - call syscall_trace_enter - LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */ - RESTORE_REST -- cmpl $(IA32_NR_syscalls-1),%eax -+ cmpq $(IA32_NR_syscalls-1),%rax - ja int_ret_from_sys_call /* ia32_tracesys has set RAX(%rsp) */ - jmp ia32_do_call - END(ia32_syscall) --- -1.7.2.3 - diff --git a/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-c41d68a513c71e35a14f66d71782d27a79a81ea6.patch b/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-c41d68a513c71e35a14f66d71782d27a79a81ea6.patch deleted file mode 100644 index 5cf6c64..0000000 --- a/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-c41d68a513c71e35a14f66d71782d27a79a81ea6.patch +++ /dev/null @@ -1,190 +0,0 @@ -From c41d68a513c71e35a14f66d71782d27a79a81ea6 Mon Sep 17 00:00:00 2001 -From: H. Peter Anvin -Date: Tue, 7 Sep 2010 16:16:18 -0700 -Subject: [PATCH] compat: Make compat_alloc_user_space() incorporate the access_ok() - -compat_alloc_user_space() expects the caller to independently call -access_ok() to verify the returned area. A missing call could -introduce problems on some architectures. - -This patch incorporates the access_ok() check into -compat_alloc_user_space() and also adds a sanity check on the length. -The existing compat_alloc_user_space() implementations are renamed -arch_compat_alloc_user_space() and are used as part of the -implementation of the new global function. - -This patch assumes NULL will cause __get_user()/__put_user() to either -fail or access userspace on all architectures. This should be -followed by checking the return value of compat_access_user_space() -for NULL in the callers, at which time the access_ok() in the callers -can also be removed. - -Reported-by: Ben Hawkes -Signed-off-by: H. Peter Anvin -Acked-by: Benjamin Herrenschmidt -Acked-by: Chris Metcalf -Acked-by: David S. Miller -Acked-by: Ingo Molnar -Acked-by: Thomas Gleixner -Acked-by: Tony Luck -Cc: Andrew Morton -Cc: Arnd Bergmann -Cc: Fenghua Yu -Cc: H. Peter Anvin -Cc: Heiko Carstens -Cc: Helge Deller -Cc: James Bottomley -Cc: Kyle McMartin -Cc: Martin Schwidefsky -Cc: Paul Mackerras -Cc: Ralf Baechle -Cc: ---- - arch/ia64/include/asm/compat.h | 2 +- - arch/mips/include/asm/compat.h | 2 +- - arch/parisc/include/asm/compat.h | 2 +- - arch/powerpc/include/asm/compat.h | 2 +- - arch/s390/include/asm/compat.h | 2 +- - arch/sparc/include/asm/compat.h | 2 +- - arch/tile/include/asm/compat.h | 2 +- - arch/x86/include/asm/compat.h | 2 +- - include/linux/compat.h | 3 +++ - kernel/compat.c | 21 +++++++++++++++++++++ - 10 files changed, 32 insertions(+), 8 deletions(-) - -diff --git a/arch/ia64/include/asm/compat.h b/arch/ia64/include/asm/compat.h -index f90edc8..9301a28 100644 ---- a/arch/ia64/include/asm/compat.h -+++ b/arch/ia64/include/asm/compat.h -@@ -199,7 +199,7 @@ ptr_to_compat(void __user *uptr) - } - - static __inline__ void __user * --compat_alloc_user_space (long len) -+arch_compat_alloc_user_space (long len) - { - struct pt_regs *regs = task_pt_regs(current); - return (void __user *) (((regs->r12 & 0xffffffff) & -16) - len); -diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h -index 613f691..dbc5106 100644 ---- a/arch/mips/include/asm/compat.h -+++ b/arch/mips/include/asm/compat.h -@@ -145,7 +145,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) - return (u32)(unsigned long)uptr; - } - --static inline void __user *compat_alloc_user_space(long len) -+static inline void __user *arch_compat_alloc_user_space(long len) - { - struct pt_regs *regs = (struct pt_regs *) - ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; -diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h -index 02b77ba..efa0b60 100644 ---- a/arch/parisc/include/asm/compat.h -+++ b/arch/parisc/include/asm/compat.h -@@ -147,7 +147,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) - return (u32)(unsigned long)uptr; - } - --static __inline__ void __user *compat_alloc_user_space(long len) -+static __inline__ void __user *arch_compat_alloc_user_space(long len) - { - struct pt_regs *regs = ¤t->thread.regs; - return (void __user *)regs->gr[30]; -diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h -index 396d21a..a11d4ea 100644 ---- a/arch/powerpc/include/asm/compat.h -+++ b/arch/powerpc/include/asm/compat.h -@@ -134,7 +134,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) - return (u32)(unsigned long)uptr; - } - --static inline void __user *compat_alloc_user_space(long len) -+static inline void __user *arch_compat_alloc_user_space(long len) - { - struct pt_regs *regs = current->thread.regs; - unsigned long usp = regs->gpr[1]; -diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h -index 104f200..a875c2f 100644 ---- a/arch/s390/include/asm/compat.h -+++ b/arch/s390/include/asm/compat.h -@@ -181,7 +181,7 @@ static inline int is_compat_task(void) - - #endif - --static inline void __user *compat_alloc_user_space(long len) -+static inline void __user *arch_compat_alloc_user_space(long len) - { - unsigned long stack; - -diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h -index 5016f76..6f57325 100644 ---- a/arch/sparc/include/asm/compat.h -+++ b/arch/sparc/include/asm/compat.h -@@ -167,7 +167,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) - return (u32)(unsigned long)uptr; - } - --static inline void __user *compat_alloc_user_space(long len) -+static inline void __user *arch_compat_alloc_user_space(long len) - { - struct pt_regs *regs = current_thread_info()->kregs; - unsigned long usp = regs->u_regs[UREG_I6]; -diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h -index 306160e..1d9cd27 100644 ---- a/arch/x86/include/asm/compat.h -+++ b/arch/x86/include/asm/compat.h -@@ -205,7 +205,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) - return (u32)(unsigned long)uptr; - } - --static inline void __user *compat_alloc_user_space(long len) -+static inline void __user *arch_compat_alloc_user_space(long len) - { - struct pt_regs *regs = task_pt_regs(current); - return (void __user *)regs->sp - len; -diff --git a/include/linux/compat.h b/include/linux/compat.h -index 9ddc878..5778b55 100644 ---- a/include/linux/compat.h -+++ b/include/linux/compat.h -@@ -360,5 +360,8 @@ extern ssize_t compat_rw_copy_check_uvector(int type, - const struct compat_iovec __user *uvector, unsigned long nr_segs, - unsigned long fast_segs, struct iovec *fast_pointer, - struct iovec **ret_pointer); -+ -+extern void __user *compat_alloc_user_space(unsigned long len); -+ - #endif /* CONFIG_COMPAT */ - #endif /* _LINUX_COMPAT_H */ -diff --git a/kernel/compat.c b/kernel/compat.c -index e167efc..c9e2ec0 100644 ---- a/kernel/compat.c -+++ b/kernel/compat.c -@@ -1126,3 +1126,24 @@ compat_sys_sysinfo(struct compat_sysinfo __user *info) - - return 0; - } -+ -+/* -+ * Allocate user-space memory for the duration of a single system call, -+ * in order to marshall parameters inside a compat thunk. -+ */ -+void __user *compat_alloc_user_space(unsigned long len) -+{ -+ void __user *ptr; -+ -+ /* If len would occupy more than half of the entire compat space... */ -+ if (unlikely(len > (((compat_uptr_t)~0) >> 1))) -+ return NULL; -+ -+ ptr = arch_compat_alloc_user_space(len); -+ -+ if (unlikely(!access_ok(VERIFY_WRITE, ptr, len))) -+ return NULL; -+ -+ return ptr; -+} -+EXPORT_SYMBOL_GPL(compat_alloc_user_space); --- -1.7.2.3 - diff --git a/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-eefdca043e8391dcd719711716492063030b55ac.patch b/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-eefdca043e8391dcd719711716492063030b55ac.patch deleted file mode 100644 index b7fa739..0000000 --- a/sys-kernel/nas-sources/files/hotfixes/2.6.35/linux-2.6.git-eefdca043e8391dcd719711716492063030b55ac.patch +++ /dev/null @@ -1,49 +0,0 @@ -From eefdca043e8391dcd719711716492063030b55ac Mon Sep 17 00:00:00 2001 -From: Roland McGrath -Date: Tue, 14 Sep 2010 12:22:58 -0700 -Subject: [PATCH] x86-64, compat: Retruncate rax after ia32 syscall entry tracing - -In commit d4d6715, we reopened an old hole for a 64-bit ptracer touching a -32-bit tracee in system call entry. A %rax value set via ptrace at the -entry tracing stop gets used whole as a 32-bit syscall number, while we -only check the low 32 bits for validity. - -Fix it by truncating %rax back to 32 bits after syscall_trace_enter, -in addition to testing the full 64 bits as has already been added. - -Reported-by: Ben Hawkes -Signed-off-by: Roland McGrath -Signed-off-by: H. Peter Anvin ---- - arch/x86/ia32/ia32entry.S | 8 +++++++- - 1 files changed, 7 insertions(+), 1 deletions(-) - -diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S -index 84e3a4e..518bb99 100644 ---- a/arch/x86/ia32/ia32entry.S -+++ b/arch/x86/ia32/ia32entry.S -@@ -50,7 +50,12 @@ - /* - * Reload arg registers from stack in case ptrace changed them. - * We don't reload %eax because syscall_trace_enter() returned -- * the value it wants us to use in the table lookup. -+ * the %rax value we should see. Instead, we just truncate that -+ * value to 32 bits again as we did on entry from user mode. -+ * If it's a new value set by user_regset during entry tracing, -+ * this matches the normal truncation of the user-mode value. -+ * If it's -1 to make us punt the syscall, then (u32)-1 is still -+ * an appropriately invalid value. - */ - .macro LOAD_ARGS32 offset, _r9=0 - .if \_r9 -@@ -60,6 +65,7 @@ - movl \offset+48(%rsp),%edx - movl \offset+56(%rsp),%esi - movl \offset+64(%rsp),%edi -+ movl %eax,%eax /* zero extension */ - .endm - - .macro CFI_STARTPROC32 simple --- -1.7.2.3 -