* [PATCH 3.10 202/250] metag/usercopy: Fix alignment error checking
[not found] <1496876436-32402-1-git-send-email-w@1wt.eu>
@ 2017-06-07 22:59 ` Willy Tarreau
2017-06-07 22:59 ` [PATCH 3.10 203/250] metag/usercopy: Add early abort to copy_to_user Willy Tarreau
` (3 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: Willy Tarreau @ 2017-06-07 22:59 UTC (permalink / raw)
To: linux-kernel, stable, linux
Cc: James Hogan, linux-metag, Jiri Slaby, Willy Tarreau
From: James Hogan <james.hogan@imgtec.com>
commit 2257211942bbbf6c798ab70b487d7e62f7835a1a upstream.
Fix the error checking of the alignment adjustment code in
raw_copy_from_user(), which mistakenly considers it safe to skip the
error check when aligning the source buffer on a 2 or 4 byte boundary.
If the destination buffer was unaligned it may have started to copy
using byte or word accesses, which could well be at the start of a new
(valid) source page. This would result in it appearing to have copied 1
or 2 bytes at the end of the first (invalid) page rather than none at
all.
Fixes: 373cd784d0fc ("metag: Memory handling")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
arch/metag/lib/usercopy.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/arch/metag/lib/usercopy.c b/arch/metag/lib/usercopy.c
index b3ebfe9..a26c889 100644
--- a/arch/metag/lib/usercopy.c
+++ b/arch/metag/lib/usercopy.c
@@ -830,6 +830,8 @@ unsigned long __copy_user_zeroing(void *pdst, const void __user *psrc,
if ((unsigned long) src & 1) {
__asm_copy_from_user_1(dst, src, retn);
n--;
+ if (retn)
+ goto copy_exception_bytes;
}
if ((unsigned long) dst & 1) {
/* Worst case - byte copy */
@@ -843,6 +845,8 @@ unsigned long __copy_user_zeroing(void *pdst, const void __user *psrc,
if (((unsigned long) src & 2) && n >= 2) {
__asm_copy_from_user_2(dst, src, retn);
n -= 2;
+ if (retn)
+ goto copy_exception_bytes;
}
if ((unsigned long) dst & 2) {
/* Second worst case - word copy */
@@ -854,12 +858,6 @@ unsigned long __copy_user_zeroing(void *pdst, const void __user *psrc,
}
}
- /* We only need one check after the unalignment-adjustments,
- because if both adjustments were done, either both or
- neither reference had an exception. */
- if (retn != 0)
- goto copy_exception_bytes;
-
#ifdef USE_RAPF
/* 64 bit copy loop */
if (!(((unsigned long) src | (unsigned long) dst) & 7)) {
--
2.8.0.rc2.1.gbe9624a
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 3.10 203/250] metag/usercopy: Add early abort to copy_to_user
[not found] <1496876436-32402-1-git-send-email-w@1wt.eu>
2017-06-07 22:59 ` [PATCH 3.10 202/250] metag/usercopy: Fix alignment error checking Willy Tarreau
@ 2017-06-07 22:59 ` Willy Tarreau
2017-06-07 22:59 ` [PATCH 3.10 204/250] metag/usercopy: Set flags before ADDZ Willy Tarreau
` (2 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: Willy Tarreau @ 2017-06-07 22:59 UTC (permalink / raw)
To: linux-kernel, stable, linux
Cc: James Hogan, linux-metag, Jiri Slaby, Willy Tarreau
From: James Hogan <james.hogan@imgtec.com>
commit fb8ea062a8f2e85256e13f55696c5c5f0dfdcc8b upstream.
When copying to userland on Meta, if any faults are encountered
immediately abort the copy instead of continuing on and repeatedly
faulting, and worse potentially copying further bytes successfully to
subsequent valid pages.
Fixes: 373cd784d0fc ("metag: Memory handling")
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
arch/metag/lib/usercopy.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/metag/lib/usercopy.c b/arch/metag/lib/usercopy.c
index a26c889..212c99a 100644
--- a/arch/metag/lib/usercopy.c
+++ b/arch/metag/lib/usercopy.c
@@ -538,23 +538,31 @@ unsigned long __copy_user(void __user *pdst, const void *psrc,
if ((unsigned long) src & 1) {
__asm_copy_to_user_1(dst, src, retn);
n--;
+ if (retn)
+ return retn + n;
}
if ((unsigned long) dst & 1) {
/* Worst case - byte copy */
while (n > 0) {
__asm_copy_to_user_1(dst, src, retn);
n--;
+ if (retn)
+ return retn + n;
}
}
if (((unsigned long) src & 2) && n >= 2) {
__asm_copy_to_user_2(dst, src, retn);
n -= 2;
+ if (retn)
+ return retn + n;
}
if ((unsigned long) dst & 2) {
/* Second worst case - word copy */
while (n >= 2) {
__asm_copy_to_user_2(dst, src, retn);
n -= 2;
+ if (retn)
+ return retn + n;
}
}
@@ -569,6 +577,8 @@ unsigned long __copy_user(void __user *pdst, const void *psrc,
while (n >= 8) {
__asm_copy_to_user_8x64(dst, src, retn);
n -= 8;
+ if (retn)
+ return retn + n;
}
}
if (n >= RAPF_MIN_BUF_SIZE) {
@@ -581,6 +591,8 @@ unsigned long __copy_user(void __user *pdst, const void *psrc,
while (n >= 8) {
__asm_copy_to_user_8x64(dst, src, retn);
n -= 8;
+ if (retn)
+ return retn + n;
}
}
#endif
@@ -588,11 +600,15 @@ unsigned long __copy_user(void __user *pdst, const void *psrc,
while (n >= 16) {
__asm_copy_to_user_16(dst, src, retn);
n -= 16;
+ if (retn)
+ return retn + n;
}
while (n >= 4) {
__asm_copy_to_user_4(dst, src, retn);
n -= 4;
+ if (retn)
+ return retn + n;
}
switch (n) {
@@ -609,6 +625,10 @@ unsigned long __copy_user(void __user *pdst, const void *psrc,
break;
}
+ /*
+ * If we get here, retn correctly reflects the number of failing
+ * bytes.
+ */
return retn;
}
EXPORT_SYMBOL(__copy_user);
--
2.8.0.rc2.1.gbe9624a
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 3.10 204/250] metag/usercopy: Set flags before ADDZ
[not found] <1496876436-32402-1-git-send-email-w@1wt.eu>
2017-06-07 22:59 ` [PATCH 3.10 202/250] metag/usercopy: Fix alignment error checking Willy Tarreau
2017-06-07 22:59 ` [PATCH 3.10 203/250] metag/usercopy: Add early abort to copy_to_user Willy Tarreau
@ 2017-06-07 22:59 ` Willy Tarreau
2017-06-07 22:59 ` [PATCH 3.10 205/250] metag/usercopy: Fix src fixup in from user rapf loops Willy Tarreau
[not found] ` <1496876436-32402-1-git-send-email-w-K+wRfnb2/UA@public.gmane.org>
4 siblings, 0 replies; 5+ messages in thread
From: Willy Tarreau @ 2017-06-07 22:59 UTC (permalink / raw)
To: linux-kernel, stable, linux
Cc: James Hogan, linux-metag, Jiri Slaby, Willy Tarreau
From: James Hogan <james.hogan@imgtec.com>
commit fd40eee1290ad7add7aa665e3ce6b0f9fe9734b4 upstream.
The fixup code for the copy_to_user rapf loops reads TXStatus.LSM_STEP
to decide how far to rewind the source pointer. There is a special case
for the last execution of an MGETL/MGETD, since it leaves LSM_STEP=0
even though the number of MGETLs/MGETDs attempted was 4. This uses ADDZ
which is conditional upon the Z condition flag, but the AND instruction
which masked the TXStatus.LSM_STEP field didn't set the condition flags
based on the result.
Fix that now by using ANDS which does set the flags, and also marking
the condition codes as clobbered by the inline assembly.
Fixes: 373cd784d0fc ("metag: Memory handling")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
arch/metag/lib/usercopy.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/metag/lib/usercopy.c b/arch/metag/lib/usercopy.c
index 212c99a..c3697a1 100644
--- a/arch/metag/lib/usercopy.c
+++ b/arch/metag/lib/usercopy.c
@@ -316,7 +316,7 @@
" .previous\n" \
: "=r" (to), "=r" (from), "=r" (ret), "=d" (n) \
: "0" (to), "1" (from), "2" (ret), "3" (n) \
- : "D1Ar1", "D0Ar2", "memory")
+ : "D1Ar1", "D0Ar2", "cc", "memory")
/* rewind 'to' and 'from' pointers when a fault occurs
*
@@ -342,7 +342,7 @@
#define __asm_copy_to_user_64bit_rapf_loop(to, from, ret, n, id)\
__asm_copy_user_64bit_rapf_loop(to, from, ret, n, id, \
"LSR D0Ar2, D0Ar2, #8\n" \
- "AND D0Ar2, D0Ar2, #0x7\n" \
+ "ANDS D0Ar2, D0Ar2, #0x7\n" \
"ADDZ D0Ar2, D0Ar2, #4\n" \
"SUB D0Ar2, D0Ar2, #1\n" \
"MOV D1Ar1, #4\n" \
@@ -487,7 +487,7 @@
" .previous\n" \
: "=r" (to), "=r" (from), "=r" (ret), "=d" (n) \
: "0" (to), "1" (from), "2" (ret), "3" (n) \
- : "D1Ar1", "D0Ar2", "memory")
+ : "D1Ar1", "D0Ar2", "cc", "memory")
/* rewind 'to' and 'from' pointers when a fault occurs
*
@@ -513,7 +513,7 @@
#define __asm_copy_to_user_32bit_rapf_loop(to, from, ret, n, id)\
__asm_copy_user_32bit_rapf_loop(to, from, ret, n, id, \
"LSR D0Ar2, D0Ar2, #8\n" \
- "AND D0Ar2, D0Ar2, #0x7\n" \
+ "ANDS D0Ar2, D0Ar2, #0x7\n" \
"ADDZ D0Ar2, D0Ar2, #4\n" \
"SUB D0Ar2, D0Ar2, #1\n" \
"MOV D1Ar1, #4\n" \
--
2.8.0.rc2.1.gbe9624a
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 3.10 205/250] metag/usercopy: Fix src fixup in from user rapf loops
[not found] <1496876436-32402-1-git-send-email-w@1wt.eu>
` (2 preceding siblings ...)
2017-06-07 22:59 ` [PATCH 3.10 204/250] metag/usercopy: Set flags before ADDZ Willy Tarreau
@ 2017-06-07 22:59 ` Willy Tarreau
[not found] ` <1496876436-32402-1-git-send-email-w-K+wRfnb2/UA@public.gmane.org>
4 siblings, 0 replies; 5+ messages in thread
From: Willy Tarreau @ 2017-06-07 22:59 UTC (permalink / raw)
To: linux-kernel, stable, linux
Cc: James Hogan, linux-metag, Jiri Slaby, Willy Tarreau
From: James Hogan <james.hogan@imgtec.com>
commit 2c0b1df88b987a12d95ea1d6beaf01894f3cc725 upstream.
The fixup code to rewind the source pointer in
__asm_copy_from_user_{32,64}bit_rapf_loop() always rewound the source by
a single unit (4 or 8 bytes), however this is insufficient if the fault
didn't occur on the first load in the loop, as the source pointer will
have been incremented but nothing will have been stored until all 4
register [pairs] are loaded.
Read the LSM_STEP field of TXSTATUS (which is already loaded into a
register), a bit like the copy_to_user versions, to determine how many
iterations of MGET[DL] have taken place, all of which need rewinding.
Fixes: 373cd784d0fc ("metag: Memory handling")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
arch/metag/lib/usercopy.c | 36 ++++++++++++++++++++++++++++--------
1 file changed, 28 insertions(+), 8 deletions(-)
diff --git a/arch/metag/lib/usercopy.c b/arch/metag/lib/usercopy.c
index c3697a1..4adbab2 100644
--- a/arch/metag/lib/usercopy.c
+++ b/arch/metag/lib/usercopy.c
@@ -809,29 +809,49 @@ EXPORT_SYMBOL(__copy_user);
*
* Rationale:
* A fault occurs while reading from user buffer, which is the
- * source. Since the fault is at a single address, we only
- * need to rewind by 8 bytes.
+ * source.
* Since we don't write to kernel buffer until we read first,
* the kernel buffer is at the right state and needn't be
- * corrected.
+ * corrected, but the source must be rewound to the beginning of
+ * the block, which is LSM_STEP*8 bytes.
+ * LSM_STEP is bits 10:8 in TXSTATUS which is already read
+ * and stored in D0Ar2
+ *
+ * NOTE: If a fault occurs at the last operation in M{G,S}ETL
+ * LSM_STEP will be 0. ie: we do 4 writes in our case, if
+ * a fault happens at the 4th write, LSM_STEP will be 0
+ * instead of 4. The code copes with that.
*/
#define __asm_copy_from_user_64bit_rapf_loop(to, from, ret, n, id) \
__asm_copy_user_64bit_rapf_loop(to, from, ret, n, id, \
- "SUB %1, %1, #8\n")
+ "LSR D0Ar2, D0Ar2, #5\n" \
+ "ANDS D0Ar2, D0Ar2, #0x38\n" \
+ "ADDZ D0Ar2, D0Ar2, #32\n" \
+ "SUB %1, %1, D0Ar2\n")
/* rewind 'from' pointer when a fault occurs
*
* Rationale:
* A fault occurs while reading from user buffer, which is the
- * source. Since the fault is at a single address, we only
- * need to rewind by 4 bytes.
+ * source.
* Since we don't write to kernel buffer until we read first,
* the kernel buffer is at the right state and needn't be
- * corrected.
+ * corrected, but the source must be rewound to the beginning of
+ * the block, which is LSM_STEP*4 bytes.
+ * LSM_STEP is bits 10:8 in TXSTATUS which is already read
+ * and stored in D0Ar2
+ *
+ * NOTE: If a fault occurs at the last operation in M{G,S}ETL
+ * LSM_STEP will be 0. ie: we do 4 writes in our case, if
+ * a fault happens at the 4th write, LSM_STEP will be 0
+ * instead of 4. The code copes with that.
*/
#define __asm_copy_from_user_32bit_rapf_loop(to, from, ret, n, id) \
__asm_copy_user_32bit_rapf_loop(to, from, ret, n, id, \
- "SUB %1, %1, #4\n")
+ "LSR D0Ar2, D0Ar2, #6\n" \
+ "ANDS D0Ar2, D0Ar2, #0x1c\n" \
+ "ADDZ D0Ar2, D0Ar2, #16\n" \
+ "SUB %1, %1, D0Ar2\n")
/* Copy from user to kernel, zeroing the bytes that were inaccessible in
--
2.8.0.rc2.1.gbe9624a
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 3.10 206/250] metag/usercopy: Add missing fixups
[not found] ` <1496876436-32402-1-git-send-email-w-K+wRfnb2/UA@public.gmane.org>
@ 2017-06-07 22:59 ` Willy Tarreau
0 siblings, 0 replies; 5+ messages in thread
From: Willy Tarreau @ 2017-06-07 22:59 UTC (permalink / raw)
To: linux-kernel-u79uwXL29TY76Z2rM5mHXA,
stable-u79uwXL29TY76Z2rM5mHXA, linux-0h96xk9xTtrk1uMJSBkQmQ
Cc: James Hogan, linux-metag-u79uwXL29TY76Z2rM5mHXA, Jiri Slaby,
Willy Tarreau
From: James Hogan <james.hogan-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
commit b884a190afcecdbef34ca508ea5ee88bb7c77861 upstream.
The rapf copy loops in the Meta usercopy code is missing some extable
entries for HTP cores with unaligned access checking enabled, where
faults occur on the instruction immediately after the faulting access.
Add the fixup labels and extable entries for these cases so that corner
case user copy failures don't cause kernel crashes.
Fixes: 373cd784d0fc ("metag: Memory handling")
Signed-off-by: James Hogan <james.hogan-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
Cc: linux-metag-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Signed-off-by: Jiri Slaby <jslaby-AlSwsSmVLrQ@public.gmane.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
arch/metag/lib/usercopy.c | 72 +++++++++++++++++++++++++++++++----------------
1 file changed, 48 insertions(+), 24 deletions(-)
diff --git a/arch/metag/lib/usercopy.c b/arch/metag/lib/usercopy.c
index 4adbab2..dfe77b2 100644
--- a/arch/metag/lib/usercopy.c
+++ b/arch/metag/lib/usercopy.c
@@ -260,27 +260,31 @@
"MGETL D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
"22:\n" \
"MSETL [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
- "SUB %3, %3, #32\n" \
"23:\n" \
- "MGETL D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
+ "SUB %3, %3, #32\n" \
"24:\n" \
+ "MGETL D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
+ "25:\n" \
"MSETL [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "26:\n" \
"SUB %3, %3, #32\n" \
"DCACHE [%1+#-64], D0Ar6\n" \
"BR $Lloop"id"\n" \
\
"MOV RAPF, %1\n" \
- "25:\n" \
+ "27:\n" \
"MGETL D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "26:\n" \
+ "28:\n" \
"MSETL [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "29:\n" \
"SUB %3, %3, #32\n" \
- "27:\n" \
+ "30:\n" \
"MGETL D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "28:\n" \
+ "31:\n" \
"MSETL [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "32:\n" \
"SUB %0, %0, #8\n" \
- "29:\n" \
+ "33:\n" \
"SETL [%0++], D0.7, D1.7\n" \
"SUB %3, %3, #32\n" \
"1:" \
@@ -312,7 +316,11 @@
" .long 26b,3b\n" \
" .long 27b,3b\n" \
" .long 28b,3b\n" \
- " .long 29b,4b\n" \
+ " .long 29b,3b\n" \
+ " .long 30b,3b\n" \
+ " .long 31b,3b\n" \
+ " .long 32b,3b\n" \
+ " .long 33b,4b\n" \
" .previous\n" \
: "=r" (to), "=r" (from), "=r" (ret), "=d" (n) \
: "0" (to), "1" (from), "2" (ret), "3" (n) \
@@ -403,47 +411,55 @@
"MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
"22:\n" \
"MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
- "SUB %3, %3, #16\n" \
"23:\n" \
- "MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "24:\n" \
- "MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
"SUB %3, %3, #16\n" \
- "25:\n" \
+ "24:\n" \
"MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "26:\n" \
+ "25:\n" \
"MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "26:\n" \
"SUB %3, %3, #16\n" \
"27:\n" \
"MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
"28:\n" \
"MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "29:\n" \
+ "SUB %3, %3, #16\n" \
+ "30:\n" \
+ "MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
+ "31:\n" \
+ "MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "32:\n" \
"SUB %3, %3, #16\n" \
"DCACHE [%1+#-64], D0Ar6\n" \
"BR $Lloop"id"\n" \
\
"MOV RAPF, %1\n" \
- "29:\n" \
+ "33:\n" \
"MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "30:\n" \
+ "34:\n" \
"MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "35:\n" \
"SUB %3, %3, #16\n" \
- "31:\n" \
+ "36:\n" \
"MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "32:\n" \
+ "37:\n" \
"MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "38:\n" \
"SUB %3, %3, #16\n" \
- "33:\n" \
+ "39:\n" \
"MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "34:\n" \
+ "40:\n" \
"MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "41:\n" \
"SUB %3, %3, #16\n" \
- "35:\n" \
+ "42:\n" \
"MGETD D0FrT, D0.5, D0.6, D0.7, [%1++]\n" \
- "36:\n" \
+ "43:\n" \
"MSETD [%0++], D0FrT, D0.5, D0.6, D0.7\n" \
+ "44:\n" \
"SUB %0, %0, #4\n" \
- "37:\n" \
+ "45:\n" \
"SETD [%0++], D0.7\n" \
"SUB %3, %3, #16\n" \
"1:" \
@@ -483,7 +499,15 @@
" .long 34b,3b\n" \
" .long 35b,3b\n" \
" .long 36b,3b\n" \
- " .long 37b,4b\n" \
+ " .long 37b,3b\n" \
+ " .long 38b,3b\n" \
+ " .long 39b,3b\n" \
+ " .long 40b,3b\n" \
+ " .long 41b,3b\n" \
+ " .long 42b,3b\n" \
+ " .long 43b,3b\n" \
+ " .long 44b,3b\n" \
+ " .long 45b,4b\n" \
" .previous\n" \
: "=r" (to), "=r" (from), "=r" (ret), "=d" (n) \
: "0" (to), "1" (from), "2" (ret), "3" (n) \
--
2.8.0.rc2.1.gbe9624a
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[not found] <1496876436-32402-1-git-send-email-w@1wt.eu>
2017-06-07 22:59 ` [PATCH 3.10 202/250] metag/usercopy: Fix alignment error checking Willy Tarreau
2017-06-07 22:59 ` [PATCH 3.10 203/250] metag/usercopy: Add early abort to copy_to_user Willy Tarreau
2017-06-07 22:59 ` [PATCH 3.10 204/250] metag/usercopy: Set flags before ADDZ Willy Tarreau
2017-06-07 22:59 ` [PATCH 3.10 205/250] metag/usercopy: Fix src fixup in from user rapf loops Willy Tarreau
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2017-06-07 22:59 ` [PATCH 3.10 206/250] metag/usercopy: Add missing fixups Willy Tarreau
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