From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
torvalds@linux-foundation.org, stable@vger.kernel.org
Cc: lwn@lwn.net, jslaby@suse.cz,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: Linux 4.14.224
Date: Sun, 7 Mar 2021 12:11:33 +0100 [thread overview]
Message-ID: <1615115493162116@kroah.com> (raw)
In-Reply-To: <161511549214117@kroah.com>
diff --git a/Documentation/devicetree/bindings/net/btusb.txt b/Documentation/devicetree/bindings/net/btusb.txt
index 9c5e663fa1af..828a04695e1b 100644
--- a/Documentation/devicetree/bindings/net/btusb.txt
+++ b/Documentation/devicetree/bindings/net/btusb.txt
@@ -36,7 +36,7 @@ Following example uses irq pin number 3 of gpio0 for out of band wake-on-bt:
compatible = "usb1286,204e";
reg = <1>;
interrupt-parent = <&gpio0>;
- interrupt-name = "wakeup";
+ interrupt-names = "wakeup";
interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
};
};
diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt
index 9a3658cc399e..6ff1b9899fd0 100644
--- a/Documentation/filesystems/sysfs.txt
+++ b/Documentation/filesystems/sysfs.txt
@@ -211,12 +211,10 @@ Other notes:
is 4096.
- show() methods should return the number of bytes printed into the
- buffer. This is the return value of scnprintf().
+ buffer.
-- show() must not use snprintf() when formatting the value to be
- returned to user space. If you can guarantee that an overflow
- will never happen you can use sprintf() otherwise you must use
- scnprintf().
+- show() should only use sysfs_emit() or sysfs_emit_at() when formatting
+ the value to be returned to user space.
- store() should return the number of bytes used from the buffer. If the
entire buffer has been used, just return the count argument.
diff --git a/Makefile b/Makefile
index b8ab01786d09..eda72c1ca13a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 14
-SUBLEVEL = 223
+SUBLEVEL = 224
EXTRAVERSION =
NAME = Petit Gorille
diff --git a/arch/arm/xen/p2m.c b/arch/arm/xen/p2m.c
index ce538c51fa3f..8a8a388549e7 100644
--- a/arch/arm/xen/p2m.c
+++ b/arch/arm/xen/p2m.c
@@ -91,12 +91,39 @@ int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
int i;
for (i = 0; i < count; i++) {
+ struct gnttab_unmap_grant_ref unmap;
+ int rc;
+
if (map_ops[i].status)
continue;
- if (unlikely(!set_phys_to_machine(map_ops[i].host_addr >> XEN_PAGE_SHIFT,
- map_ops[i].dev_bus_addr >> XEN_PAGE_SHIFT))) {
- return -ENOMEM;
- }
+ if (likely(set_phys_to_machine(map_ops[i].host_addr >> XEN_PAGE_SHIFT,
+ map_ops[i].dev_bus_addr >> XEN_PAGE_SHIFT)))
+ continue;
+
+ /*
+ * Signal an error for this slot. This in turn requires
+ * immediate unmapping.
+ */
+ map_ops[i].status = GNTST_general_error;
+ unmap.host_addr = map_ops[i].host_addr,
+ unmap.handle = map_ops[i].handle;
+ map_ops[i].handle = ~0;
+ if (map_ops[i].flags & GNTMAP_device_map)
+ unmap.dev_bus_addr = map_ops[i].dev_bus_addr;
+ else
+ unmap.dev_bus_addr = 0;
+
+ /*
+ * Pre-populate the status field, to be recognizable in
+ * the log message below.
+ */
+ unmap.status = 1;
+
+ rc = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref,
+ &unmap, 1);
+ if (rc || unmap.status != GNTST_okay)
+ pr_err_once("gnttab unmap failed: rc=%d st=%d\n",
+ rc, unmap.status);
}
return 0;
diff --git a/arch/arm64/include/asm/atomic_ll_sc.h b/arch/arm64/include/asm/atomic_ll_sc.h
index f5a2d09afb38..1cc42441bc67 100644
--- a/arch/arm64/include/asm/atomic_ll_sc.h
+++ b/arch/arm64/include/asm/atomic_ll_sc.h
@@ -37,7 +37,7 @@
* (the optimize attribute silently ignores these options).
*/
-#define ATOMIC_OP(op, asm_op) \
+#define ATOMIC_OP(op, asm_op, constraint) \
__LL_SC_INLINE void \
__LL_SC_PREFIX(atomic_##op(int i, atomic_t *v)) \
{ \
@@ -51,11 +51,11 @@ __LL_SC_PREFIX(atomic_##op(int i, atomic_t *v)) \
" stxr %w1, %w0, %2\n" \
" cbnz %w1, 1b" \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
- : "Ir" (i)); \
+ : #constraint "r" (i)); \
} \
__LL_SC_EXPORT(atomic_##op);
-#define ATOMIC_OP_RETURN(name, mb, acq, rel, cl, op, asm_op) \
+#define ATOMIC_OP_RETURN(name, mb, acq, rel, cl, op, asm_op, constraint)\
__LL_SC_INLINE int \
__LL_SC_PREFIX(atomic_##op##_return##name(int i, atomic_t *v)) \
{ \
@@ -70,14 +70,14 @@ __LL_SC_PREFIX(atomic_##op##_return##name(int i, atomic_t *v)) \
" cbnz %w1, 1b\n" \
" " #mb \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
- : "Ir" (i) \
+ : #constraint "r" (i) \
: cl); \
\
return result; \
} \
__LL_SC_EXPORT(atomic_##op##_return##name);
-#define ATOMIC_FETCH_OP(name, mb, acq, rel, cl, op, asm_op) \
+#define ATOMIC_FETCH_OP(name, mb, acq, rel, cl, op, asm_op, constraint) \
__LL_SC_INLINE int \
__LL_SC_PREFIX(atomic_fetch_##op##name(int i, atomic_t *v)) \
{ \
@@ -92,7 +92,7 @@ __LL_SC_PREFIX(atomic_fetch_##op##name(int i, atomic_t *v)) \
" cbnz %w2, 1b\n" \
" " #mb \
: "=&r" (result), "=&r" (val), "=&r" (tmp), "+Q" (v->counter) \
- : "Ir" (i) \
+ : #constraint "r" (i) \
: cl); \
\
return result; \
@@ -110,8 +110,8 @@ __LL_SC_EXPORT(atomic_fetch_##op##name);
ATOMIC_FETCH_OP (_acquire, , a, , "memory", __VA_ARGS__)\
ATOMIC_FETCH_OP (_release, , , l, "memory", __VA_ARGS__)
-ATOMIC_OPS(add, add)
-ATOMIC_OPS(sub, sub)
+ATOMIC_OPS(add, add, I)
+ATOMIC_OPS(sub, sub, J)
#undef ATOMIC_OPS
#define ATOMIC_OPS(...) \
@@ -121,17 +121,17 @@ ATOMIC_OPS(sub, sub)
ATOMIC_FETCH_OP (_acquire, , a, , "memory", __VA_ARGS__)\
ATOMIC_FETCH_OP (_release, , , l, "memory", __VA_ARGS__)
-ATOMIC_OPS(and, and)
-ATOMIC_OPS(andnot, bic)
-ATOMIC_OPS(or, orr)
-ATOMIC_OPS(xor, eor)
+ATOMIC_OPS(and, and, )
+ATOMIC_OPS(andnot, bic, )
+ATOMIC_OPS(or, orr, )
+ATOMIC_OPS(xor, eor, )
#undef ATOMIC_OPS
#undef ATOMIC_FETCH_OP
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
-#define ATOMIC64_OP(op, asm_op) \
+#define ATOMIC64_OP(op, asm_op, constraint) \
__LL_SC_INLINE void \
__LL_SC_PREFIX(atomic64_##op(long i, atomic64_t *v)) \
{ \
@@ -145,11 +145,11 @@ __LL_SC_PREFIX(atomic64_##op(long i, atomic64_t *v)) \
" stxr %w1, %0, %2\n" \
" cbnz %w1, 1b" \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
- : "Ir" (i)); \
+ : #constraint "r" (i)); \
} \
__LL_SC_EXPORT(atomic64_##op);
-#define ATOMIC64_OP_RETURN(name, mb, acq, rel, cl, op, asm_op) \
+#define ATOMIC64_OP_RETURN(name, mb, acq, rel, cl, op, asm_op, constraint)\
__LL_SC_INLINE long \
__LL_SC_PREFIX(atomic64_##op##_return##name(long i, atomic64_t *v)) \
{ \
@@ -164,14 +164,14 @@ __LL_SC_PREFIX(atomic64_##op##_return##name(long i, atomic64_t *v)) \
" cbnz %w1, 1b\n" \
" " #mb \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
- : "Ir" (i) \
+ : #constraint "r" (i) \
: cl); \
\
return result; \
} \
__LL_SC_EXPORT(atomic64_##op##_return##name);
-#define ATOMIC64_FETCH_OP(name, mb, acq, rel, cl, op, asm_op) \
+#define ATOMIC64_FETCH_OP(name, mb, acq, rel, cl, op, asm_op, constraint)\
__LL_SC_INLINE long \
__LL_SC_PREFIX(atomic64_fetch_##op##name(long i, atomic64_t *v)) \
{ \
@@ -186,7 +186,7 @@ __LL_SC_PREFIX(atomic64_fetch_##op##name(long i, atomic64_t *v)) \
" cbnz %w2, 1b\n" \
" " #mb \
: "=&r" (result), "=&r" (val), "=&r" (tmp), "+Q" (v->counter) \
- : "Ir" (i) \
+ : #constraint "r" (i) \
: cl); \
\
return result; \
@@ -204,8 +204,8 @@ __LL_SC_EXPORT(atomic64_fetch_##op##name);
ATOMIC64_FETCH_OP (_acquire,, a, , "memory", __VA_ARGS__) \
ATOMIC64_FETCH_OP (_release,, , l, "memory", __VA_ARGS__)
-ATOMIC64_OPS(add, add)
-ATOMIC64_OPS(sub, sub)
+ATOMIC64_OPS(add, add, I)
+ATOMIC64_OPS(sub, sub, J)
#undef ATOMIC64_OPS
#define ATOMIC64_OPS(...) \
@@ -215,10 +215,10 @@ ATOMIC64_OPS(sub, sub)
ATOMIC64_FETCH_OP (_acquire,, a, , "memory", __VA_ARGS__) \
ATOMIC64_FETCH_OP (_release,, , l, "memory", __VA_ARGS__)
-ATOMIC64_OPS(and, and)
-ATOMIC64_OPS(andnot, bic)
-ATOMIC64_OPS(or, orr)
-ATOMIC64_OPS(xor, eor)
+ATOMIC64_OPS(and, and, L)
+ATOMIC64_OPS(andnot, bic, )
+ATOMIC64_OPS(or, orr, L)
+ATOMIC64_OPS(xor, eor, L)
#undef ATOMIC64_OPS
#undef ATOMIC64_FETCH_OP
@@ -248,48 +248,54 @@ __LL_SC_PREFIX(atomic64_dec_if_positive(atomic64_t *v))
}
__LL_SC_EXPORT(atomic64_dec_if_positive);
-#define __CMPXCHG_CASE(w, sz, name, mb, acq, rel, cl) \
-__LL_SC_INLINE unsigned long \
-__LL_SC_PREFIX(__cmpxchg_case_##name(volatile void *ptr, \
- unsigned long old, \
- unsigned long new)) \
+#define __CMPXCHG_CASE(w, sfx, name, sz, mb, acq, rel, cl, constraint) \
+__LL_SC_INLINE u##sz \
+__LL_SC_PREFIX(__cmpxchg_case_##name##sz(volatile void *ptr, \
+ unsigned long old, \
+ u##sz new)) \
{ \
- unsigned long tmp, oldval; \
+ unsigned long tmp; \
+ u##sz oldval; \
\
asm volatile( \
" prfm pstl1strm, %[v]\n" \
- "1: ld" #acq "xr" #sz "\t%" #w "[oldval], %[v]\n" \
+ "1: ld" #acq "xr" #sfx "\t%" #w "[oldval], %[v]\n" \
" eor %" #w "[tmp], %" #w "[oldval], %" #w "[old]\n" \
" cbnz %" #w "[tmp], 2f\n" \
- " st" #rel "xr" #sz "\t%w[tmp], %" #w "[new], %[v]\n" \
+ " st" #rel "xr" #sfx "\t%w[tmp], %" #w "[new], %[v]\n" \
" cbnz %w[tmp], 1b\n" \
" " #mb "\n" \
"2:" \
: [tmp] "=&r" (tmp), [oldval] "=&r" (oldval), \
- [v] "+Q" (*(unsigned long *)ptr) \
- : [old] "Lr" (old), [new] "r" (new) \
+ [v] "+Q" (*(u##sz *)ptr) \
+ : [old] #constraint "r" (old), [new] "r" (new) \
: cl); \
\
return oldval; \
} \
-__LL_SC_EXPORT(__cmpxchg_case_##name);
+__LL_SC_EXPORT(__cmpxchg_case_##name##sz);
-__CMPXCHG_CASE(w, b, 1, , , , )
-__CMPXCHG_CASE(w, h, 2, , , , )
-__CMPXCHG_CASE(w, , 4, , , , )
-__CMPXCHG_CASE( , , 8, , , , )
-__CMPXCHG_CASE(w, b, acq_1, , a, , "memory")
-__CMPXCHG_CASE(w, h, acq_2, , a, , "memory")
-__CMPXCHG_CASE(w, , acq_4, , a, , "memory")
-__CMPXCHG_CASE( , , acq_8, , a, , "memory")
-__CMPXCHG_CASE(w, b, rel_1, , , l, "memory")
-__CMPXCHG_CASE(w, h, rel_2, , , l, "memory")
-__CMPXCHG_CASE(w, , rel_4, , , l, "memory")
-__CMPXCHG_CASE( , , rel_8, , , l, "memory")
-__CMPXCHG_CASE(w, b, mb_1, dmb ish, , l, "memory")
-__CMPXCHG_CASE(w, h, mb_2, dmb ish, , l, "memory")
-__CMPXCHG_CASE(w, , mb_4, dmb ish, , l, "memory")
-__CMPXCHG_CASE( , , mb_8, dmb ish, , l, "memory")
+/*
+ * Earlier versions of GCC (no later than 8.1.0) appear to incorrectly
+ * handle the 'K' constraint for the value 4294967295 - thus we use no
+ * constraint for 32 bit operations.
+ */
+__CMPXCHG_CASE(w, b, , 8, , , , , )
+__CMPXCHG_CASE(w, h, , 16, , , , , )
+__CMPXCHG_CASE(w, , , 32, , , , , )
+__CMPXCHG_CASE( , , , 64, , , , , L)
+__CMPXCHG_CASE(w, b, acq_, 8, , a, , "memory", )
+__CMPXCHG_CASE(w, h, acq_, 16, , a, , "memory", )
+__CMPXCHG_CASE(w, , acq_, 32, , a, , "memory", )
+__CMPXCHG_CASE( , , acq_, 64, , a, , "memory", L)
+__CMPXCHG_CASE(w, b, rel_, 8, , , l, "memory", )
+__CMPXCHG_CASE(w, h, rel_, 16, , , l, "memory", )
+__CMPXCHG_CASE(w, , rel_, 32, , , l, "memory", )
+__CMPXCHG_CASE( , , rel_, 64, , , l, "memory", L)
+__CMPXCHG_CASE(w, b, mb_, 8, dmb ish, , l, "memory", )
+__CMPXCHG_CASE(w, h, mb_, 16, dmb ish, , l, "memory", )
+__CMPXCHG_CASE(w, , mb_, 32, dmb ish, , l, "memory", )
+__CMPXCHG_CASE( , , mb_, 64, dmb ish, , l, "memory", L)
#undef __CMPXCHG_CASE
diff --git a/arch/arm64/include/asm/atomic_lse.h b/arch/arm64/include/asm/atomic_lse.h
index f9b0b09153e0..4d6f917b654e 100644
--- a/arch/arm64/include/asm/atomic_lse.h
+++ b/arch/arm64/include/asm/atomic_lse.h
@@ -446,22 +446,22 @@ static inline long atomic64_dec_if_positive(atomic64_t *v)
#define __LL_SC_CMPXCHG(op) __LL_SC_CALL(__cmpxchg_case_##op)
-#define __CMPXCHG_CASE(w, sz, name, mb, cl...) \
-static inline unsigned long __cmpxchg_case_##name(volatile void *ptr, \
- unsigned long old, \
- unsigned long new) \
+#define __CMPXCHG_CASE(w, sfx, name, sz, mb, cl...) \
+static inline u##sz __cmpxchg_case_##name##sz(volatile void *ptr, \
+ unsigned long old, \
+ u##sz new) \
{ \
register unsigned long x0 asm ("x0") = (unsigned long)ptr; \
register unsigned long x1 asm ("x1") = old; \
- register unsigned long x2 asm ("x2") = new; \
+ register u##sz x2 asm ("x2") = new; \
\
asm volatile(ARM64_LSE_ATOMIC_INSN( \
/* LL/SC */ \
- __LL_SC_CMPXCHG(name) \
+ __LL_SC_CMPXCHG(name##sz) \
__nops(2), \
/* LSE atomics */ \
" mov " #w "30, %" #w "[old]\n" \
- " cas" #mb #sz "\t" #w "30, %" #w "[new], %[v]\n" \
+ " cas" #mb #sfx "\t" #w "30, %" #w "[new], %[v]\n" \
" mov %" #w "[ret], " #w "30") \
: [ret] "+r" (x0), [v] "+Q" (*(unsigned long *)ptr) \
: [old] "r" (x1), [new] "r" (x2) \
@@ -470,22 +470,22 @@ static inline unsigned long __cmpxchg_case_##name(volatile void *ptr, \
return x0; \
}
-__CMPXCHG_CASE(w, b, 1, )
-__CMPXCHG_CASE(w, h, 2, )
-__CMPXCHG_CASE(w, , 4, )
-__CMPXCHG_CASE(x, , 8, )
-__CMPXCHG_CASE(w, b, acq_1, a, "memory")
-__CMPXCHG_CASE(w, h, acq_2, a, "memory")
-__CMPXCHG_CASE(w, , acq_4, a, "memory")
-__CMPXCHG_CASE(x, , acq_8, a, "memory")
-__CMPXCHG_CASE(w, b, rel_1, l, "memory")
-__CMPXCHG_CASE(w, h, rel_2, l, "memory")
-__CMPXCHG_CASE(w, , rel_4, l, "memory")
-__CMPXCHG_CASE(x, , rel_8, l, "memory")
-__CMPXCHG_CASE(w, b, mb_1, al, "memory")
-__CMPXCHG_CASE(w, h, mb_2, al, "memory")
-__CMPXCHG_CASE(w, , mb_4, al, "memory")
-__CMPXCHG_CASE(x, , mb_8, al, "memory")
+__CMPXCHG_CASE(w, b, , 8, )
+__CMPXCHG_CASE(w, h, , 16, )
+__CMPXCHG_CASE(w, , , 32, )
+__CMPXCHG_CASE(x, , , 64, )
+__CMPXCHG_CASE(w, b, acq_, 8, a, "memory")
+__CMPXCHG_CASE(w, h, acq_, 16, a, "memory")
+__CMPXCHG_CASE(w, , acq_, 32, a, "memory")
+__CMPXCHG_CASE(x, , acq_, 64, a, "memory")
+__CMPXCHG_CASE(w, b, rel_, 8, l, "memory")
+__CMPXCHG_CASE(w, h, rel_, 16, l, "memory")
+__CMPXCHG_CASE(w, , rel_, 32, l, "memory")
+__CMPXCHG_CASE(x, , rel_, 64, l, "memory")
+__CMPXCHG_CASE(w, b, mb_, 8, al, "memory")
+__CMPXCHG_CASE(w, h, mb_, 16, al, "memory")
+__CMPXCHG_CASE(w, , mb_, 32, al, "memory")
+__CMPXCHG_CASE(x, , mb_, 64, al, "memory")
#undef __LL_SC_CMPXCHG
#undef __CMPXCHG_CASE
diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h
index 9b2e2e2e728a..ed6a1aae6fbb 100644
--- a/arch/arm64/include/asm/cmpxchg.h
+++ b/arch/arm64/include/asm/cmpxchg.h
@@ -29,46 +29,46 @@
* barrier case is generated as release+dmb for the former and
* acquire+release for the latter.
*/
-#define __XCHG_CASE(w, sz, name, mb, nop_lse, acq, acq_lse, rel, cl) \
-static inline unsigned long __xchg_case_##name(unsigned long x, \
- volatile void *ptr) \
-{ \
- unsigned long ret, tmp; \
- \
- asm volatile(ARM64_LSE_ATOMIC_INSN( \
- /* LL/SC */ \
- " prfm pstl1strm, %2\n" \
- "1: ld" #acq "xr" #sz "\t%" #w "0, %2\n" \
- " st" #rel "xr" #sz "\t%w1, %" #w "3, %2\n" \
- " cbnz %w1, 1b\n" \
- " " #mb, \
- /* LSE atomics */ \
- " swp" #acq_lse #rel #sz "\t%" #w "3, %" #w "0, %2\n" \
- __nops(3) \
- " " #nop_lse) \
- : "=&r" (ret), "=&r" (tmp), "+Q" (*(unsigned long *)ptr) \
- : "r" (x) \
- : cl); \
- \
- return ret; \
+#define __XCHG_CASE(w, sfx, name, sz, mb, nop_lse, acq, acq_lse, rel, cl) \
+static inline u##sz __xchg_case_##name##sz(u##sz x, volatile void *ptr) \
+{ \
+ u##sz ret; \
+ unsigned long tmp; \
+ \
+ asm volatile(ARM64_LSE_ATOMIC_INSN( \
+ /* LL/SC */ \
+ " prfm pstl1strm, %2\n" \
+ "1: ld" #acq "xr" #sfx "\t%" #w "0, %2\n" \
+ " st" #rel "xr" #sfx "\t%w1, %" #w "3, %2\n" \
+ " cbnz %w1, 1b\n" \
+ " " #mb, \
+ /* LSE atomics */ \
+ " swp" #acq_lse #rel #sfx "\t%" #w "3, %" #w "0, %2\n" \
+ __nops(3) \
+ " " #nop_lse) \
+ : "=&r" (ret), "=&r" (tmp), "+Q" (*(u##sz *)ptr) \
+ : "r" (x) \
+ : cl); \
+ \
+ return ret; \
}
-__XCHG_CASE(w, b, 1, , , , , , )
-__XCHG_CASE(w, h, 2, , , , , , )
-__XCHG_CASE(w, , 4, , , , , , )
-__XCHG_CASE( , , 8, , , , , , )
-__XCHG_CASE(w, b, acq_1, , , a, a, , "memory")
-__XCHG_CASE(w, h, acq_2, , , a, a, , "memory")
-__XCHG_CASE(w, , acq_4, , , a, a, , "memory")
-__XCHG_CASE( , , acq_8, , , a, a, , "memory")
-__XCHG_CASE(w, b, rel_1, , , , , l, "memory")
-__XCHG_CASE(w, h, rel_2, , , , , l, "memory")
-__XCHG_CASE(w, , rel_4, , , , , l, "memory")
-__XCHG_CASE( , , rel_8, , , , , l, "memory")
-__XCHG_CASE(w, b, mb_1, dmb ish, nop, , a, l, "memory")
-__XCHG_CASE(w, h, mb_2, dmb ish, nop, , a, l, "memory")
-__XCHG_CASE(w, , mb_4, dmb ish, nop, , a, l, "memory")
-__XCHG_CASE( , , mb_8, dmb ish, nop, , a, l, "memory")
+__XCHG_CASE(w, b, , 8, , , , , , )
+__XCHG_CASE(w, h, , 16, , , , , , )
+__XCHG_CASE(w, , , 32, , , , , , )
+__XCHG_CASE( , , , 64, , , , , , )
+__XCHG_CASE(w, b, acq_, 8, , , a, a, , "memory")
+__XCHG_CASE(w, h, acq_, 16, , , a, a, , "memory")
+__XCHG_CASE(w, , acq_, 32, , , a, a, , "memory")
+__XCHG_CASE( , , acq_, 64, , , a, a, , "memory")
+__XCHG_CASE(w, b, rel_, 8, , , , , l, "memory")
+__XCHG_CASE(w, h, rel_, 16, , , , , l, "memory")
+__XCHG_CASE(w, , rel_, 32, , , , , l, "memory")
+__XCHG_CASE( , , rel_, 64, , , , , l, "memory")
+__XCHG_CASE(w, b, mb_, 8, dmb ish, nop, , a, l, "memory")
+__XCHG_CASE(w, h, mb_, 16, dmb ish, nop, , a, l, "memory")
+__XCHG_CASE(w, , mb_, 32, dmb ish, nop, , a, l, "memory")
+__XCHG_CASE( , , mb_, 64, dmb ish, nop, , a, l, "memory")
#undef __XCHG_CASE
@@ -79,13 +79,13 @@ static __always_inline unsigned long __xchg##sfx(unsigned long x, \
{ \
switch (size) { \
case 1: \
- return __xchg_case##sfx##_1(x, ptr); \
+ return __xchg_case##sfx##_8(x, ptr); \
case 2: \
- return __xchg_case##sfx##_2(x, ptr); \
+ return __xchg_case##sfx##_16(x, ptr); \
case 4: \
- return __xchg_case##sfx##_4(x, ptr); \
+ return __xchg_case##sfx##_32(x, ptr); \
case 8: \
- return __xchg_case##sfx##_8(x, ptr); \
+ return __xchg_case##sfx##_64(x, ptr); \
default: \
BUILD_BUG(); \
} \
@@ -122,13 +122,13 @@ static __always_inline unsigned long __cmpxchg##sfx(volatile void *ptr, \
{ \
switch (size) { \
case 1: \
- return __cmpxchg_case##sfx##_1(ptr, (u8)old, new); \
+ return __cmpxchg_case##sfx##_8(ptr, (u8)old, new); \
case 2: \
- return __cmpxchg_case##sfx##_2(ptr, (u16)old, new); \
+ return __cmpxchg_case##sfx##_16(ptr, (u16)old, new); \
case 4: \
- return __cmpxchg_case##sfx##_4(ptr, old, new); \
+ return __cmpxchg_case##sfx##_32(ptr, old, new); \
case 8: \
- return __cmpxchg_case##sfx##_8(ptr, old, new); \
+ return __cmpxchg_case##sfx##_64(ptr, old, new); \
default: \
BUILD_BUG(); \
} \
@@ -222,16 +222,16 @@ __CMPXCHG_GEN(_mb)
__ret; \
})
-#define __CMPWAIT_CASE(w, sz, name) \
-static inline void __cmpwait_case_##name(volatile void *ptr, \
- unsigned long val) \
+#define __CMPWAIT_CASE(w, sfx, sz) \
+static inline void __cmpwait_case_##sz(volatile void *ptr, \
+ unsigned long val) \
{ \
unsigned long tmp; \
\
asm volatile( \
" sevl\n" \
" wfe\n" \
- " ldxr" #sz "\t%" #w "[tmp], %[v]\n" \
+ " ldxr" #sfx "\t%" #w "[tmp], %[v]\n" \
" eor %" #w "[tmp], %" #w "[tmp], %" #w "[val]\n" \
" cbnz %" #w "[tmp], 1f\n" \
" wfe\n" \
@@ -240,10 +240,10 @@ static inline void __cmpwait_case_##name(volatile void *ptr, \
: [val] "r" (val)); \
}
-__CMPWAIT_CASE(w, b, 1);
-__CMPWAIT_CASE(w, h, 2);
-__CMPWAIT_CASE(w, , 4);
-__CMPWAIT_CASE( , , 8);
+__CMPWAIT_CASE(w, b, 8);
+__CMPWAIT_CASE(w, h, 16);
+__CMPWAIT_CASE(w, , 32);
+__CMPWAIT_CASE( , , 64);
#undef __CMPWAIT_CASE
@@ -254,13 +254,13 @@ static __always_inline void __cmpwait##sfx(volatile void *ptr, \
{ \
switch (size) { \
case 1: \
- return __cmpwait_case##sfx##_1(ptr, (u8)val); \
+ return __cmpwait_case##sfx##_8(ptr, (u8)val); \
case 2: \
- return __cmpwait_case##sfx##_2(ptr, (u16)val); \
+ return __cmpwait_case##sfx##_16(ptr, (u16)val); \
case 4: \
- return __cmpwait_case##sfx##_4(ptr, val); \
+ return __cmpwait_case##sfx##_32(ptr, val); \
case 8: \
- return __cmpwait_case##sfx##_8(ptr, val); \
+ return __cmpwait_case##sfx##_64(ptr, val); \
default: \
BUILD_BUG(); \
} \
diff --git a/arch/arm64/kernel/module.lds b/arch/arm64/kernel/module.lds
index 22e36a21c113..09a0eef71d12 100644
--- a/arch/arm64/kernel/module.lds
+++ b/arch/arm64/kernel/module.lds
@@ -1,5 +1,5 @@
SECTIONS {
- .plt (NOLOAD) : { BYTE(0) }
- .init.plt (NOLOAD) : { BYTE(0) }
- .text.ftrace_trampoline (NOLOAD) : { BYTE(0) }
+ .plt 0 (NOLOAD) : { BYTE(0) }
+ .init.plt 0 (NOLOAD) : { BYTE(0) }
+ .text.ftrace_trampoline 0 (NOLOAD) : { BYTE(0) }
}
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 0ca254085a66..c152c30c2d06 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -380,7 +380,11 @@ static inline int eirr_to_irq(unsigned long eirr)
/*
* IRQ STACK - used for irq handler
*/
+#ifdef CONFIG_64BIT
+#define IRQ_STACK_SIZE (4096 << 4) /* 64k irq stack size */
+#else
#define IRQ_STACK_SIZE (4096 << 3) /* 32k irq stack size */
+#endif
union irq_stack_union {
unsigned long stack[IRQ_STACK_SIZE/sizeof(unsigned long)];
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index f58336af095c..1ccfe6bb9122 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -126,6 +126,7 @@ int apply_relocate(Elf32_Shdr *sechdrs,
*location += sym->st_value;
break;
case R_386_PC32:
+ case R_386_PLT32:
/* Add the value, subtract its position */
*location += sym->st_value - (uint32_t)location;
break;
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 0d52c9050113..729e288718cc 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -477,6 +477,15 @@ static const struct dmi_system_id reboot_dmi_table[] __initconst = {
},
},
+ { /* PCIe Wifi card isn't detected after reboot otherwise */
+ .callback = set_pci_reboot,
+ .ident = "Zotac ZBOX CI327 nano",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "NA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ZBOX-CI327NANO-GS-01"),
+ },
+ },
+
/* Sony */
{ /* Handle problems with rebooting on Sony VGN-Z540N */
.callback = set_bios_reboot,
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index 220e97841e49..c58b63178123 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -840,9 +840,11 @@ static int do_reloc32(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
case R_386_PC32:
case R_386_PC16:
case R_386_PC8:
+ case R_386_PLT32:
/*
- * NONE can be ignored and PC relative relocations don't
- * need to be adjusted.
+ * NONE can be ignored and PC relative relocations don't need
+ * to be adjusted. Because sym must be defined, R_386_PLT32 can
+ * be treated the same way as R_386_PC32.
*/
break;
@@ -883,9 +885,11 @@ static int do_reloc_real(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
case R_386_PC32:
case R_386_PC16:
case R_386_PC8:
+ case R_386_PLT32:
/*
- * NONE can be ignored and PC relative relocations don't
- * need to be adjusted.
+ * NONE can be ignored and PC relative relocations don't need
+ * to be adjusted. Because sym must be defined, R_386_PLT32 can
+ * be treated the same way as R_386_PC32.
*/
break;
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 30295d2ebd92..e031b7e7272a 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -706,6 +706,8 @@ int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
for (i = 0; i < count; i++) {
unsigned long mfn, pfn;
+ struct gnttab_unmap_grant_ref unmap[2];
+ int rc;
/* Do not add to override if the map failed. */
if (map_ops[i].status != GNTST_okay ||
@@ -723,10 +725,46 @@ int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
WARN(pfn_to_mfn(pfn) != INVALID_P2M_ENTRY, "page must be ballooned");
- if (unlikely(!set_phys_to_machine(pfn, FOREIGN_FRAME(mfn)))) {
- ret = -ENOMEM;
- goto out;
+ if (likely(set_phys_to_machine(pfn, FOREIGN_FRAME(mfn))))
+ continue;
+
+ /*
+ * Signal an error for this slot. This in turn requires
+ * immediate unmapping.
+ */
+ map_ops[i].status = GNTST_general_error;
+ unmap[0].host_addr = map_ops[i].host_addr,
+ unmap[0].handle = map_ops[i].handle;
+ map_ops[i].handle = ~0;
+ if (map_ops[i].flags & GNTMAP_device_map)
+ unmap[0].dev_bus_addr = map_ops[i].dev_bus_addr;
+ else
+ unmap[0].dev_bus_addr = 0;
+
+ if (kmap_ops) {
+ kmap_ops[i].status = GNTST_general_error;
+ unmap[1].host_addr = kmap_ops[i].host_addr,
+ unmap[1].handle = kmap_ops[i].handle;
+ kmap_ops[i].handle = ~0;
+ if (kmap_ops[i].flags & GNTMAP_device_map)
+ unmap[1].dev_bus_addr = kmap_ops[i].dev_bus_addr;
+ else
+ unmap[1].dev_bus_addr = 0;
}
+
+ /*
+ * Pre-populate both status fields, to be recognizable in
+ * the log message below.
+ */
+ unmap[0].status = 1;
+ unmap[1].status = 1;
+
+ rc = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref,
+ unmap, 1 + !!kmap_ops);
+ if (rc || unmap[0].status != GNTST_okay ||
+ unmap[1].status != GNTST_okay)
+ pr_err_once("gnttab unmap failed: rc=%d st0=%d st1=%d\n",
+ rc, unmap[0].status, unmap[1].status);
}
out:
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 0d906ca8d4f5..0798d6aacedd 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -738,7 +738,7 @@ static ssize_t mm_stat_show(struct device *dev,
zram->limit_pages << PAGE_SHIFT,
max_used << PAGE_SHIFT,
(u64)atomic64_read(&zram->stats.same_pages),
- pool_stats.pages_compacted);
+ atomic_long_read(&pool_stats.pages_compacted));
up_read(&zram->init_lock);
return ret;
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index a956c73ea85e..374279ba1444 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -865,9 +865,9 @@ int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
}
/* gets freed when the ring has consumed it */
- ents = kmalloc_array(obj->pages->nents,
- sizeof(struct virtio_gpu_mem_entry),
- GFP_KERNEL);
+ ents = kvmalloc_array(obj->pages->nents,
+ sizeof(struct virtio_gpu_mem_entry),
+ GFP_KERNEL);
if (!ents) {
DRM_ERROR("failed to allocate ent list\n");
return -ENOMEM;
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index bf7aaff3aa37..bbbbfd697f9c 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -630,11 +630,18 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len,
data[0], data[1]);
break;
case MCE_RSP_EQIRCFS:
+ if (!data[0] && !data[1]) {
+ dev_dbg(dev, "%s: no carrier", inout);
+ break;
+ }
+ // prescaler should make sense
+ if (data[0] > 8)
+ break;
period = DIV_ROUND_CLOSEST((1U << data[0] * 2) *
(data[1] + 1), 10);
if (!period)
break;
- carrier = (1000 * 1000) / period;
+ carrier = USEC_PER_SEC / period;
dev_dbg(dev, "%s carrier of %u Hz (period %uus)",
inout, carrier, period);
break;
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 5899593dabaf..aaaee039fb30 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -904,7 +904,10 @@ static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
unsigned int i;
extra_size = roundup(extra_size, sizeof(*entity->pads));
- num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1;
+ if (num_pads)
+ num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
+ else
+ num_inputs = 0;
size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
+ num_inputs;
entity = kzalloc(size, GFP_KERNEL);
@@ -920,7 +923,7 @@ static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
for (i = 0; i < num_inputs; ++i)
entity->pads[i].flags = MEDIA_PAD_FL_SINK;
- if (!UVC_ENTITY_IS_OTERM(entity))
+ if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
entity->bNrInPins = num_inputs;
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 8eb52139684a..1e4c75877ad1 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -2836,7 +2836,7 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
v4l2_kioctl func)
{
char sbuf[128];
- void *mbuf = NULL;
+ void *mbuf = NULL, *array_buf = NULL;
void *parg = (void *)arg;
long err = -EINVAL;
bool has_array_args;
@@ -2894,20 +2894,14 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
has_array_args = err;
if (has_array_args) {
- /*
- * When adding new types of array args, make sure that the
- * parent argument to ioctl (which contains the pointer to the
- * array) fits into sbuf (so that mbuf will still remain
- * unused up to here).
- */
- mbuf = kvmalloc(array_size, GFP_KERNEL);
+ array_buf = kvmalloc(array_size, GFP_KERNEL);
err = -ENOMEM;
- if (NULL == mbuf)
+ if (array_buf == NULL)
goto out_array_args;
err = -EFAULT;
- if (copy_from_user(mbuf, user_ptr, array_size))
+ if (copy_from_user(array_buf, user_ptr, array_size))
goto out_array_args;
- *kernel_ptr = mbuf;
+ *kernel_ptr = array_buf;
}
/* Handles IOCTL */
@@ -2926,7 +2920,7 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
if (has_array_args) {
*kernel_ptr = (void __force *)user_ptr;
- if (copy_to_user(user_ptr, mbuf, array_size))
+ if (copy_to_user(user_ptr, array_buf, array_size))
err = -EFAULT;
goto out_array_args;
}
@@ -2948,6 +2942,7 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
}
out:
+ kvfree(array_buf);
kvfree(mbuf);
return err;
}
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 6702a374dbd7..0ff492978001 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1208,6 +1208,7 @@ static const struct usb_device_id products[] = {
{QMI_FIXED_INTF(0x19d2, 0x1255, 4)},
{QMI_FIXED_INTF(0x19d2, 0x1256, 4)},
{QMI_FIXED_INTF(0x19d2, 0x1270, 5)}, /* ZTE MF667 */
+ {QMI_FIXED_INTF(0x19d2, 0x1275, 3)}, /* ZTE P685M */
{QMI_FIXED_INTF(0x19d2, 0x1401, 2)},
{QMI_FIXED_INTF(0x19d2, 0x1402, 2)}, /* ZTE MF60 */
{QMI_FIXED_INTF(0x19d2, 0x1424, 2)},
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index be4420ff52b8..aa5bec5a3676 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3545,23 +3545,16 @@ bool ath10k_mac_tx_frm_has_freq(struct ath10k *ar)
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
{
struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
- int ret = 0;
-
- spin_lock_bh(&ar->data_lock);
- if (skb_queue_len(q) == ATH10K_MAX_NUM_MGMT_PENDING) {
+ if (skb_queue_len_lockless(q) >= ATH10K_MAX_NUM_MGMT_PENDING) {
ath10k_warn(ar, "wmi mgmt tx queue is full\n");
- ret = -ENOSPC;
- goto unlock;
+ return -ENOSPC;
}
- __skb_queue_tail(q, skb);
+ skb_queue_tail(q, skb);
ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
-unlock:
- spin_unlock_bh(&ar->data_lock);
-
- return ret;
+ return 0;
}
static enum ath10k_mac_tx_path
diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
index 22009e14a8fc..9bd635ec7827 100644
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -648,7 +648,6 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
wl->quirks |= WLCORE_QUIRK_LEGACY_NVS |
WLCORE_QUIRK_DUAL_PROBE_TMPL |
WLCORE_QUIRK_TKIP_HEADER_SPACE |
- WLCORE_QUIRK_START_STA_FAILS |
WLCORE_QUIRK_AP_ZERO_SESSION_ID;
wl->sr_fw_name = WL127X_FW_NAME_SINGLE;
wl->mr_fw_name = WL127X_FW_NAME_MULTI;
@@ -672,7 +671,6 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
wl->quirks |= WLCORE_QUIRK_LEGACY_NVS |
WLCORE_QUIRK_DUAL_PROBE_TMPL |
WLCORE_QUIRK_TKIP_HEADER_SPACE |
- WLCORE_QUIRK_START_STA_FAILS |
WLCORE_QUIRK_AP_ZERO_SESSION_ID;
wl->plt_fw_name = WL127X_PLT_FW_NAME;
wl->sr_fw_name = WL127X_FW_NAME_SINGLE;
@@ -701,7 +699,6 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
wl->quirks |= WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN |
WLCORE_QUIRK_DUAL_PROBE_TMPL |
WLCORE_QUIRK_TKIP_HEADER_SPACE |
- WLCORE_QUIRK_START_STA_FAILS |
WLCORE_QUIRK_AP_ZERO_SESSION_ID;
wlcore_set_min_fw_ver(wl, WL128X_CHIP_VER,
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index eb3a7971c1d3..9f568034deb3 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -2832,21 +2832,8 @@ static int wlcore_join(struct wl1271 *wl, struct wl12xx_vif *wlvif)
if (is_ibss)
ret = wl12xx_cmd_role_start_ibss(wl, wlvif);
- else {
- if (wl->quirks & WLCORE_QUIRK_START_STA_FAILS) {
- /*
- * TODO: this is an ugly workaround for wl12xx fw
- * bug - we are not able to tx/rx after the first
- * start_sta, so make dummy start+stop calls,
- * and then call start_sta again.
- * this should be fixed in the fw.
- */
- wl12xx_cmd_role_start_sta(wl, wlvif);
- wl12xx_cmd_role_stop_sta(wl, wlvif);
- }
-
+ else
ret = wl12xx_cmd_role_start_sta(wl, wlvif);
- }
return ret;
}
diff --git a/drivers/net/wireless/ti/wlcore/wlcore.h b/drivers/net/wireless/ti/wlcore/wlcore.h
index 95fbedc8ea34..a75b43f5a6c2 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore.h
@@ -560,9 +560,6 @@ wlcore_set_min_fw_ver(struct wl1271 *wl, unsigned int chip,
/* Each RX/TX transaction requires an end-of-transaction transfer */
#define WLCORE_QUIRK_END_OF_TRANSACTION BIT(0)
-/* the first start_role(sta) sometimes doesn't work on wl12xx */
-#define WLCORE_QUIRK_START_STA_FAILS BIT(1)
-
/* wl127x and SPI don't support SDIO block size alignment */
#define WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN BIT(2)
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index fcaf4dd9d9c4..ad555a9a3eca 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1328,11 +1328,21 @@ int xenvif_tx_action(struct xenvif_queue *queue, int budget)
return 0;
gnttab_batch_copy(queue->tx_copy_ops, nr_cops);
- if (nr_mops != 0)
+ if (nr_mops != 0) {
ret = gnttab_map_refs(queue->tx_map_ops,
NULL,
queue->pages_to_map,
nr_mops);
+ if (ret) {
+ unsigned int i;
+
+ netdev_err(queue->vif->dev, "Map fail: nr %u ret %d\n",
+ nr_mops, ret);
+ for (i = 0; i < nr_mops; ++i)
+ WARN_ON_ONCE(queue->tx_map_ops[i].status ==
+ GNTST_okay);
+ }
+ }
work_done = xenvif_tx_submit(queue);
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index f9cf676a0469..56794b13bb12 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -106,7 +106,7 @@ struct virtio_rev_info {
};
/* the highest virtio-ccw revision we support */
-#define VIRTIO_CCW_REV_MAX 1
+#define VIRTIO_CCW_REV_MAX 2
struct virtio_ccw_vq_info {
struct virtqueue *vq;
@@ -911,7 +911,7 @@ static u8 virtio_ccw_get_status(struct virtio_device *vdev)
u8 old_status = *vcdev->status;
struct ccw1 *ccw;
- if (vcdev->revision < 1)
+ if (vcdev->revision < 2)
return *vcdev->status;
ccw = kzalloc(sizeof(*ccw), GFP_DMA | GFP_KERNEL);
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index f7e1af90849b..f180d1b4553c 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -3368,125 +3368,125 @@ int iscsi_session_get_param(struct iscsi_cls_session *cls_session,
switch(param) {
case ISCSI_PARAM_FAST_ABORT:
- len = sprintf(buf, "%d\n", session->fast_abort);
+ len = sysfs_emit(buf, "%d\n", session->fast_abort);
break;
case ISCSI_PARAM_ABORT_TMO:
- len = sprintf(buf, "%d\n", session->abort_timeout);
+ len = sysfs_emit(buf, "%d\n", session->abort_timeout);
break;
case ISCSI_PARAM_LU_RESET_TMO:
- len = sprintf(buf, "%d\n", session->lu_reset_timeout);
+ len = sysfs_emit(buf, "%d\n", session->lu_reset_timeout);
break;
case ISCSI_PARAM_TGT_RESET_TMO:
- len = sprintf(buf, "%d\n", session->tgt_reset_timeout);
+ len = sysfs_emit(buf, "%d\n", session->tgt_reset_timeout);
break;
case ISCSI_PARAM_INITIAL_R2T_EN:
- len = sprintf(buf, "%d\n", session->initial_r2t_en);
+ len = sysfs_emit(buf, "%d\n", session->initial_r2t_en);
break;
case ISCSI_PARAM_MAX_R2T:
- len = sprintf(buf, "%hu\n", session->max_r2t);
+ len = sysfs_emit(buf, "%hu\n", session->max_r2t);
break;
case ISCSI_PARAM_IMM_DATA_EN:
- len = sprintf(buf, "%d\n", session->imm_data_en);
+ len = sysfs_emit(buf, "%d\n", session->imm_data_en);
break;
case ISCSI_PARAM_FIRST_BURST:
- len = sprintf(buf, "%u\n", session->first_burst);
+ len = sysfs_emit(buf, "%u\n", session->first_burst);
break;
case ISCSI_PARAM_MAX_BURST:
- len = sprintf(buf, "%u\n", session->max_burst);
+ len = sysfs_emit(buf, "%u\n", session->max_burst);
break;
case ISCSI_PARAM_PDU_INORDER_EN:
- len = sprintf(buf, "%d\n", session->pdu_inorder_en);
+ len = sysfs_emit(buf, "%d\n", session->pdu_inorder_en);
break;
case ISCSI_PARAM_DATASEQ_INORDER_EN:
- len = sprintf(buf, "%d\n", session->dataseq_inorder_en);
+ len = sysfs_emit(buf, "%d\n", session->dataseq_inorder_en);
break;
case ISCSI_PARAM_DEF_TASKMGMT_TMO:
- len = sprintf(buf, "%d\n", session->def_taskmgmt_tmo);
+ len = sysfs_emit(buf, "%d\n", session->def_taskmgmt_tmo);
break;
case ISCSI_PARAM_ERL:
- len = sprintf(buf, "%d\n", session->erl);
+ len = sysfs_emit(buf, "%d\n", session->erl);
break;
case ISCSI_PARAM_TARGET_NAME:
- len = sprintf(buf, "%s\n", session->targetname);
+ len = sysfs_emit(buf, "%s\n", session->targetname);
break;
case ISCSI_PARAM_TARGET_ALIAS:
- len = sprintf(buf, "%s\n", session->targetalias);
+ len = sysfs_emit(buf, "%s\n", session->targetalias);
break;
case ISCSI_PARAM_TPGT:
- len = sprintf(buf, "%d\n", session->tpgt);
+ len = sysfs_emit(buf, "%d\n", session->tpgt);
break;
case ISCSI_PARAM_USERNAME:
- len = sprintf(buf, "%s\n", session->username);
+ len = sysfs_emit(buf, "%s\n", session->username);
break;
case ISCSI_PARAM_USERNAME_IN:
- len = sprintf(buf, "%s\n", session->username_in);
+ len = sysfs_emit(buf, "%s\n", session->username_in);
break;
case ISCSI_PARAM_PASSWORD:
- len = sprintf(buf, "%s\n", session->password);
+ len = sysfs_emit(buf, "%s\n", session->password);
break;
case ISCSI_PARAM_PASSWORD_IN:
- len = sprintf(buf, "%s\n", session->password_in);
+ len = sysfs_emit(buf, "%s\n", session->password_in);
break;
case ISCSI_PARAM_IFACE_NAME:
- len = sprintf(buf, "%s\n", session->ifacename);
+ len = sysfs_emit(buf, "%s\n", session->ifacename);
break;
case ISCSI_PARAM_INITIATOR_NAME:
- len = sprintf(buf, "%s\n", session->initiatorname);
+ len = sysfs_emit(buf, "%s\n", session->initiatorname);
break;
case ISCSI_PARAM_BOOT_ROOT:
- len = sprintf(buf, "%s\n", session->boot_root);
+ len = sysfs_emit(buf, "%s\n", session->boot_root);
break;
case ISCSI_PARAM_BOOT_NIC:
- len = sprintf(buf, "%s\n", session->boot_nic);
+ len = sysfs_emit(buf, "%s\n", session->boot_nic);
break;
case ISCSI_PARAM_BOOT_TARGET:
- len = sprintf(buf, "%s\n", session->boot_target);
+ len = sysfs_emit(buf, "%s\n", session->boot_target);
break;
case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
- len = sprintf(buf, "%u\n", session->auto_snd_tgt_disable);
+ len = sysfs_emit(buf, "%u\n", session->auto_snd_tgt_disable);
break;
case ISCSI_PARAM_DISCOVERY_SESS:
- len = sprintf(buf, "%u\n", session->discovery_sess);
+ len = sysfs_emit(buf, "%u\n", session->discovery_sess);
break;
case ISCSI_PARAM_PORTAL_TYPE:
- len = sprintf(buf, "%s\n", session->portal_type);
+ len = sysfs_emit(buf, "%s\n", session->portal_type);
break;
case ISCSI_PARAM_CHAP_AUTH_EN:
- len = sprintf(buf, "%u\n", session->chap_auth_en);
+ len = sysfs_emit(buf, "%u\n", session->chap_auth_en);
break;
case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
- len = sprintf(buf, "%u\n", session->discovery_logout_en);
+ len = sysfs_emit(buf, "%u\n", session->discovery_logout_en);
break;
case ISCSI_PARAM_BIDI_CHAP_EN:
- len = sprintf(buf, "%u\n", session->bidi_chap_en);
+ len = sysfs_emit(buf, "%u\n", session->bidi_chap_en);
break;
case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
- len = sprintf(buf, "%u\n", session->discovery_auth_optional);
+ len = sysfs_emit(buf, "%u\n", session->discovery_auth_optional);
break;
case ISCSI_PARAM_DEF_TIME2WAIT:
- len = sprintf(buf, "%d\n", session->time2wait);
+ len = sysfs_emit(buf, "%d\n", session->time2wait);
break;
case ISCSI_PARAM_DEF_TIME2RETAIN:
- len = sprintf(buf, "%d\n", session->time2retain);
+ len = sysfs_emit(buf, "%d\n", session->time2retain);
break;
case ISCSI_PARAM_TSID:
- len = sprintf(buf, "%u\n", session->tsid);
+ len = sysfs_emit(buf, "%u\n", session->tsid);
break;
case ISCSI_PARAM_ISID:
- len = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
+ len = sysfs_emit(buf, "%02x%02x%02x%02x%02x%02x\n",
session->isid[0], session->isid[1],
session->isid[2], session->isid[3],
session->isid[4], session->isid[5]);
break;
case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
- len = sprintf(buf, "%u\n", session->discovery_parent_idx);
+ len = sysfs_emit(buf, "%u\n", session->discovery_parent_idx);
break;
case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
if (session->discovery_parent_type)
- len = sprintf(buf, "%s\n",
+ len = sysfs_emit(buf, "%s\n",
session->discovery_parent_type);
else
- len = sprintf(buf, "\n");
+ len = sysfs_emit(buf, "\n");
break;
default:
return -ENOSYS;
@@ -3518,16 +3518,16 @@ int iscsi_conn_get_addr_param(struct sockaddr_storage *addr,
case ISCSI_PARAM_CONN_ADDRESS:
case ISCSI_HOST_PARAM_IPADDRESS:
if (sin)
- len = sprintf(buf, "%pI4\n", &sin->sin_addr.s_addr);
+ len = sysfs_emit(buf, "%pI4\n", &sin->sin_addr.s_addr);
else
- len = sprintf(buf, "%pI6\n", &sin6->sin6_addr);
+ len = sysfs_emit(buf, "%pI6\n", &sin6->sin6_addr);
break;
case ISCSI_PARAM_CONN_PORT:
case ISCSI_PARAM_LOCAL_PORT:
if (sin)
- len = sprintf(buf, "%hu\n", be16_to_cpu(sin->sin_port));
+ len = sysfs_emit(buf, "%hu\n", be16_to_cpu(sin->sin_port));
else
- len = sprintf(buf, "%hu\n",
+ len = sysfs_emit(buf, "%hu\n",
be16_to_cpu(sin6->sin6_port));
break;
default:
@@ -3546,88 +3546,88 @@ int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
switch(param) {
case ISCSI_PARAM_PING_TMO:
- len = sprintf(buf, "%u\n", conn->ping_timeout);
+ len = sysfs_emit(buf, "%u\n", conn->ping_timeout);
break;
case ISCSI_PARAM_RECV_TMO:
- len = sprintf(buf, "%u\n", conn->recv_timeout);
+ len = sysfs_emit(buf, "%u\n", conn->recv_timeout);
break;
case ISCSI_PARAM_MAX_RECV_DLENGTH:
- len = sprintf(buf, "%u\n", conn->max_recv_dlength);
+ len = sysfs_emit(buf, "%u\n", conn->max_recv_dlength);
break;
case ISCSI_PARAM_MAX_XMIT_DLENGTH:
- len = sprintf(buf, "%u\n", conn->max_xmit_dlength);
+ len = sysfs_emit(buf, "%u\n", conn->max_xmit_dlength);
break;
case ISCSI_PARAM_HDRDGST_EN:
- len = sprintf(buf, "%d\n", conn->hdrdgst_en);
+ len = sysfs_emit(buf, "%d\n", conn->hdrdgst_en);
break;
case ISCSI_PARAM_DATADGST_EN:
- len = sprintf(buf, "%d\n", conn->datadgst_en);
+ len = sysfs_emit(buf, "%d\n", conn->datadgst_en);
break;
case ISCSI_PARAM_IFMARKER_EN:
- len = sprintf(buf, "%d\n", conn->ifmarker_en);
+ len = sysfs_emit(buf, "%d\n", conn->ifmarker_en);
break;
case ISCSI_PARAM_OFMARKER_EN:
- len = sprintf(buf, "%d\n", conn->ofmarker_en);
+ len = sysfs_emit(buf, "%d\n", conn->ofmarker_en);
break;
case ISCSI_PARAM_EXP_STATSN:
- len = sprintf(buf, "%u\n", conn->exp_statsn);
+ len = sysfs_emit(buf, "%u\n", conn->exp_statsn);
break;
case ISCSI_PARAM_PERSISTENT_PORT:
- len = sprintf(buf, "%d\n", conn->persistent_port);
+ len = sysfs_emit(buf, "%d\n", conn->persistent_port);
break;
case ISCSI_PARAM_PERSISTENT_ADDRESS:
- len = sprintf(buf, "%s\n", conn->persistent_address);
+ len = sysfs_emit(buf, "%s\n", conn->persistent_address);
break;
case ISCSI_PARAM_STATSN:
- len = sprintf(buf, "%u\n", conn->statsn);
+ len = sysfs_emit(buf, "%u\n", conn->statsn);
break;
case ISCSI_PARAM_MAX_SEGMENT_SIZE:
- len = sprintf(buf, "%u\n", conn->max_segment_size);
+ len = sysfs_emit(buf, "%u\n", conn->max_segment_size);
break;
case ISCSI_PARAM_KEEPALIVE_TMO:
- len = sprintf(buf, "%u\n", conn->keepalive_tmo);
+ len = sysfs_emit(buf, "%u\n", conn->keepalive_tmo);
break;
case ISCSI_PARAM_LOCAL_PORT:
- len = sprintf(buf, "%u\n", conn->local_port);
+ len = sysfs_emit(buf, "%u\n", conn->local_port);
break;
case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
- len = sprintf(buf, "%u\n", conn->tcp_timestamp_stat);
+ len = sysfs_emit(buf, "%u\n", conn->tcp_timestamp_stat);
break;
case ISCSI_PARAM_TCP_NAGLE_DISABLE:
- len = sprintf(buf, "%u\n", conn->tcp_nagle_disable);
+ len = sysfs_emit(buf, "%u\n", conn->tcp_nagle_disable);
break;
case ISCSI_PARAM_TCP_WSF_DISABLE:
- len = sprintf(buf, "%u\n", conn->tcp_wsf_disable);
+ len = sysfs_emit(buf, "%u\n", conn->tcp_wsf_disable);
break;
case ISCSI_PARAM_TCP_TIMER_SCALE:
- len = sprintf(buf, "%u\n", conn->tcp_timer_scale);
+ len = sysfs_emit(buf, "%u\n", conn->tcp_timer_scale);
break;
case ISCSI_PARAM_TCP_TIMESTAMP_EN:
- len = sprintf(buf, "%u\n", conn->tcp_timestamp_en);
+ len = sysfs_emit(buf, "%u\n", conn->tcp_timestamp_en);
break;
case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
- len = sprintf(buf, "%u\n", conn->fragment_disable);
+ len = sysfs_emit(buf, "%u\n", conn->fragment_disable);
break;
case ISCSI_PARAM_IPV4_TOS:
- len = sprintf(buf, "%u\n", conn->ipv4_tos);
+ len = sysfs_emit(buf, "%u\n", conn->ipv4_tos);
break;
case ISCSI_PARAM_IPV6_TC:
- len = sprintf(buf, "%u\n", conn->ipv6_traffic_class);
+ len = sysfs_emit(buf, "%u\n", conn->ipv6_traffic_class);
break;
case ISCSI_PARAM_IPV6_FLOW_LABEL:
- len = sprintf(buf, "%u\n", conn->ipv6_flow_label);
+ len = sysfs_emit(buf, "%u\n", conn->ipv6_flow_label);
break;
case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
- len = sprintf(buf, "%u\n", conn->is_fw_assigned_ipv6);
+ len = sysfs_emit(buf, "%u\n", conn->is_fw_assigned_ipv6);
break;
case ISCSI_PARAM_TCP_XMIT_WSF:
- len = sprintf(buf, "%u\n", conn->tcp_xmit_wsf);
+ len = sysfs_emit(buf, "%u\n", conn->tcp_xmit_wsf);
break;
case ISCSI_PARAM_TCP_RECV_WSF:
- len = sprintf(buf, "%u\n", conn->tcp_recv_wsf);
+ len = sysfs_emit(buf, "%u\n", conn->tcp_recv_wsf);
break;
case ISCSI_PARAM_LOCAL_IPADDR:
- len = sprintf(buf, "%s\n", conn->local_ipaddr);
+ len = sysfs_emit(buf, "%s\n", conn->local_ipaddr);
break;
default:
return -ENOSYS;
@@ -3645,13 +3645,13 @@ int iscsi_host_get_param(struct Scsi_Host *shost, enum iscsi_host_param param,
switch (param) {
case ISCSI_HOST_PARAM_NETDEV_NAME:
- len = sprintf(buf, "%s\n", ihost->netdev);
+ len = sysfs_emit(buf, "%s\n", ihost->netdev);
break;
case ISCSI_HOST_PARAM_HWADDRESS:
- len = sprintf(buf, "%s\n", ihost->hwaddress);
+ len = sysfs_emit(buf, "%s\n", ihost->hwaddress);
break;
case ISCSI_HOST_PARAM_INITIATOR_NAME:
- len = sprintf(buf, "%s\n", ihost->initiatorname);
+ len = sysfs_emit(buf, "%s\n", ihost->initiatorname);
break;
default:
return -ENOSYS;
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index c3170500a1a1..d385eddb1a43 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -119,7 +119,11 @@ show_transport_handle(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
- return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport));
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ return sysfs_emit(buf, "%llu\n",
+ (unsigned long long)iscsi_handle(priv->iscsi_transport));
}
static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
@@ -129,7 +133,7 @@ show_transport_##name(struct device *dev, \
struct device_attribute *attr,char *buf) \
{ \
struct iscsi_internal *priv = dev_to_iscsi_internal(dev); \
- return sprintf(buf, format"\n", priv->iscsi_transport->name); \
+ return sysfs_emit(buf, format"\n", priv->iscsi_transport->name);\
} \
static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL);
@@ -170,7 +174,7 @@ static ssize_t
show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf)
{
struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
- return sprintf(buf, "%llu\n", (unsigned long long) ep->id);
+ return sysfs_emit(buf, "%llu\n", (unsigned long long) ep->id);
}
static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL);
@@ -2763,6 +2767,9 @@ iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev)
struct iscsi_cls_session *session;
int err = 0, value = 0;
+ if (ev->u.set_param.len > PAGE_SIZE)
+ return -EINVAL;
+
session = iscsi_session_lookup(ev->u.set_param.sid);
conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid);
if (!conn || !session)
@@ -2910,6 +2917,9 @@ iscsi_set_host_param(struct iscsi_transport *transport,
if (!transport->set_host_param)
return -ENOSYS;
+ if (ev->u.set_host_param.len > PAGE_SIZE)
+ return -EINVAL;
+
shost = scsi_host_lookup(ev->u.set_host_param.host_no);
if (!shost) {
printk(KERN_ERR "set_host_param could not find host no %u\n",
@@ -3497,6 +3507,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
{
int err = 0;
u32 portid;
+ u32 pdu_len;
struct iscsi_uevent *ev = nlmsg_data(nlh);
struct iscsi_transport *transport = NULL;
struct iscsi_internal *priv;
@@ -3504,6 +3515,9 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
struct iscsi_cls_conn *conn;
struct iscsi_endpoint *ep = NULL;
+ if (!netlink_capable(skb, CAP_SYS_ADMIN))
+ return -EPERM;
+
if (nlh->nlmsg_type == ISCSI_UEVENT_PATH_UPDATE)
*group = ISCSI_NL_GRP_UIP;
else
@@ -3611,6 +3625,14 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
err = -EINVAL;
break;
case ISCSI_UEVENT_SEND_PDU:
+ pdu_len = nlh->nlmsg_len - sizeof(*nlh) - sizeof(*ev);
+
+ if ((ev->u.send_pdu.hdr_size > pdu_len) ||
+ (ev->u.send_pdu.data_size > (pdu_len - ev->u.send_pdu.hdr_size))) {
+ err = -EINVAL;
+ break;
+ }
+
conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid);
if (conn)
ev->r.retcode = transport->send_pdu(conn,
@@ -4017,7 +4039,7 @@ show_priv_session_state(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
- return sprintf(buf, "%s\n", iscsi_session_state_name(session->state));
+ return sysfs_emit(buf, "%s\n", iscsi_session_state_name(session->state));
}
static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state,
NULL);
@@ -4026,7 +4048,7 @@ show_priv_session_creator(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
- return sprintf(buf, "%d\n", session->creator);
+ return sysfs_emit(buf, "%d\n", session->creator);
}
static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator,
NULL);
@@ -4035,7 +4057,7 @@ show_priv_session_target_id(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
- return sprintf(buf, "%d\n", session->target_id);
+ return sysfs_emit(buf, "%d\n", session->target_id);
}
static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO,
show_priv_session_target_id, NULL);
@@ -4048,8 +4070,8 @@ show_priv_session_##field(struct device *dev, \
struct iscsi_cls_session *session = \
iscsi_dev_to_session(dev->parent); \
if (session->field == -1) \
- return sprintf(buf, "off\n"); \
- return sprintf(buf, format"\n", session->field); \
+ return sysfs_emit(buf, "off\n"); \
+ return sysfs_emit(buf, format"\n", session->field); \
}
#define iscsi_priv_session_attr_store(field) \
diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index 41a49c8194e5..b19c46bd2557 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -2249,6 +2249,7 @@ static int fwserial_create(struct fw_unit *unit)
err = fw_core_add_address_handler(&port->rx_handler,
&fw_high_memory_region);
if (err) {
+ tty_port_destroy(&port->port);
kfree(port);
goto free_ports;
}
@@ -2331,6 +2332,7 @@ static int fwserial_create(struct fw_unit *unit)
free_ports:
for (--i; i >= 0; --i) {
+ fw_core_remove_address_handler(&serial->ports[i]->rx_handler);
tty_port_destroy(&serial->ports[i]->port);
kfree(serial->ports[i]);
}
diff --git a/drivers/staging/most/aim-sound/sound.c b/drivers/staging/most/aim-sound/sound.c
index ea1366a44008..e259bf4956ab 100644
--- a/drivers/staging/most/aim-sound/sound.c
+++ b/drivers/staging/most/aim-sound/sound.c
@@ -92,6 +92,8 @@ static void swap_copy24(u8 *dest, const u8 *source, unsigned int bytes)
{
unsigned int i = 0;
+ if (bytes < 2)
+ return;
while (i < bytes - 2) {
dest[i] = source[i + 2];
dest[i + 1] = source[i + 1];
diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
index a5f88cf0f61d..a2c1a02f0407 100644
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -493,7 +493,7 @@ con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos)
p2[unicode & 0x3f] = fontpos;
- p->sum += (fontpos << 20) + unicode;
+ p->sum += (fontpos << 20U) + unicode;
return 0;
}
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 0d46e936d54e..00c415131b06 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -91,11 +91,11 @@
#define BLKS_PER_SEC(sbi) \
((sbi)->segs_per_sec * (sbi)->blocks_per_seg)
#define GET_SEC_FROM_SEG(sbi, segno) \
- ((segno) / (sbi)->segs_per_sec)
+ (((segno) == -1) ? -1: (segno) / (sbi)->segs_per_sec)
#define GET_SEG_FROM_SEC(sbi, secno) \
((secno) * (sbi)->segs_per_sec)
#define GET_ZONE_FROM_SEC(sbi, secno) \
- ((secno) / (sbi)->secs_per_zone)
+ (((secno) == -1) ? -1: (secno) / (sbi)->secs_per_zone)
#define GET_ZONE_FROM_SEG(sbi, segno) \
GET_ZONE_FROM_SEC(sbi, GET_SEC_FROM_SEG(sbi, segno))
diff --git a/fs/jfs/jfs_filsys.h b/fs/jfs/jfs_filsys.h
index b67d64671bb4..415bfa90607a 100644
--- a/fs/jfs/jfs_filsys.h
+++ b/fs/jfs/jfs_filsys.h
@@ -281,5 +281,6 @@
* fsck() must be run to repair
*/
#define FM_EXTENDFS 0x00000008 /* file system extendfs() in progress */
+#define FM_STATE_MAX 0x0000000f /* max value of s_state */
#endif /* _H_JFS_FILSYS */
diff --git a/fs/jfs/jfs_mount.c b/fs/jfs/jfs_mount.c
index d8658607bf46..b5214c9ac47a 100644
--- a/fs/jfs/jfs_mount.c
+++ b/fs/jfs/jfs_mount.c
@@ -49,6 +49,7 @@
#include <linux/fs.h>
#include <linux/buffer_head.h>
+#include <linux/log2.h>
#include "jfs_incore.h"
#include "jfs_filsys.h"
@@ -378,6 +379,15 @@ static int chkSuper(struct super_block *sb)
sbi->bsize = bsize;
sbi->l2bsize = le16_to_cpu(j_sb->s_l2bsize);
+ /* check some fields for possible corruption */
+ if (sbi->l2bsize != ilog2((u32)bsize) ||
+ j_sb->pad != 0 ||
+ le32_to_cpu(j_sb->s_state) > FM_STATE_MAX) {
+ rc = -EINVAL;
+ jfs_err("jfs_mount: Mount Failure: superblock is corrupt!");
+ goto out;
+ }
+
/*
* For now, ignore s_pbsize, l2bfactor. All I/O going through buffer
* cache.
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 666986b95c5d..300cdbdc8494 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -17,6 +17,7 @@
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/seq_file.h>
+#include <linux/mm.h>
#include "sysfs.h"
#include "../kernfs/kernfs-internal.h"
@@ -549,3 +550,57 @@ void sysfs_remove_bin_file(struct kobject *kobj,
kernfs_remove_by_name(kobj->sd, attr->attr.name);
}
EXPORT_SYMBOL_GPL(sysfs_remove_bin_file);
+
+/**
+ * sysfs_emit - scnprintf equivalent, aware of PAGE_SIZE buffer.
+ * @buf: start of PAGE_SIZE buffer.
+ * @fmt: format
+ * @...: optional arguments to @format
+ *
+ *
+ * Returns number of characters written to @buf.
+ */
+int sysfs_emit(char *buf, const char *fmt, ...)
+{
+ va_list args;
+ int len;
+
+ if (WARN(!buf || offset_in_page(buf),
+ "invalid sysfs_emit: buf:%p\n", buf))
+ return 0;
+
+ va_start(args, fmt);
+ len = vscnprintf(buf, PAGE_SIZE, fmt, args);
+ va_end(args);
+
+ return len;
+}
+EXPORT_SYMBOL_GPL(sysfs_emit);
+
+/**
+ * sysfs_emit_at - scnprintf equivalent, aware of PAGE_SIZE buffer.
+ * @buf: start of PAGE_SIZE buffer.
+ * @at: offset in @buf to start write in bytes
+ * @at must be >= 0 && < PAGE_SIZE
+ * @fmt: format
+ * @...: optional arguments to @fmt
+ *
+ *
+ * Returns number of characters written starting at &@buf[@at].
+ */
+int sysfs_emit_at(char *buf, int at, const char *fmt, ...)
+{
+ va_list args;
+ int len;
+
+ if (WARN(!buf || offset_in_page(buf) || at < 0 || at >= PAGE_SIZE,
+ "invalid sysfs_emit_at: buf:%p at:%d\n", buf, at))
+ return 0;
+
+ va_start(args, fmt);
+ len = vscnprintf(buf + at, PAGE_SIZE - at, fmt, args);
+ va_end(args);
+
+ return len;
+}
+EXPORT_SYMBOL_GPL(sysfs_emit_at);
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 42c670a31351..16d5a949fb11 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -835,7 +835,7 @@ xfs_setattr_size(
ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
ASSERT(S_ISREG(inode->i_mode));
ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
- ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
+ ATTR_MTIME_SET|ATTR_TIMES_SET)) == 0);
oldsize = inode->i_size;
newsize = iattr->ia_size;
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index cca19bb200bd..d19211a4502b 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -301,6 +301,11 @@ static inline void sysfs_enable_ns(struct kernfs_node *kn)
return kernfs_enable_ns(kn);
}
+__printf(2, 3)
+int sysfs_emit(char *buf, const char *fmt, ...);
+__printf(3, 4)
+int sysfs_emit_at(char *buf, int at, const char *fmt, ...);
+
#else /* CONFIG_SYSFS */
static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
@@ -507,6 +512,17 @@ static inline void sysfs_enable_ns(struct kernfs_node *kn)
{
}
+__printf(2, 3)
+static inline int sysfs_emit(char *buf, const char *fmt, ...)
+{
+ return 0;
+}
+
+__printf(3, 4)
+static inline int sysfs_emit_at(char *buf, int at, const char *fmt, ...)
+{
+ return 0;
+}
#endif /* CONFIG_SYSFS */
static inline int __must_check sysfs_create_file(struct kobject *kobj,
diff --git a/include/linux/zsmalloc.h b/include/linux/zsmalloc.h
index 57a8e98f2708..6c871102c273 100644
--- a/include/linux/zsmalloc.h
+++ b/include/linux/zsmalloc.h
@@ -36,7 +36,7 @@ enum zs_mapmode {
struct zs_pool_stats {
/* How many pages were migrated (freed) */
- unsigned long pages_compacted;
+ atomic_long_t pages_compacted;
};
struct zs_pool;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 9741101b1fb2..0f6959961f9a 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1208,14 +1208,16 @@ static inline int alloc_fresh_gigantic_page(struct hstate *h,
static void update_and_free_page(struct hstate *h, struct page *page)
{
int i;
+ struct page *subpage = page;
if (hstate_is_gigantic(h) && !gigantic_page_supported())
return;
h->nr_huge_pages--;
h->nr_huge_pages_node[page_to_nid(page)]--;
- for (i = 0; i < pages_per_huge_page(h); i++) {
- page[i].flags &= ~(1 << PG_locked | 1 << PG_error |
+ for (i = 0; i < pages_per_huge_page(h);
+ i++, subpage = mem_map_next(subpage, page, i)) {
+ subpage->flags &= ~(1 << PG_locked | 1 << PG_error |
1 << PG_referenced | 1 << PG_dirty |
1 << PG_active | 1 << PG_private |
1 << PG_writeback);
@@ -4629,21 +4631,23 @@ static bool vma_shareable(struct vm_area_struct *vma, unsigned long addr)
void adjust_range_if_pmd_sharing_possible(struct vm_area_struct *vma,
unsigned long *start, unsigned long *end)
{
- unsigned long a_start, a_end;
+ unsigned long v_start = ALIGN(vma->vm_start, PUD_SIZE),
+ v_end = ALIGN_DOWN(vma->vm_end, PUD_SIZE);
- if (!(vma->vm_flags & VM_MAYSHARE))
+ /*
+ * vma need span at least one aligned PUD size and the start,end range
+ * must at least partialy within it.
+ */
+ if (!(vma->vm_flags & VM_MAYSHARE) || !(v_end > v_start) ||
+ (*end <= v_start) || (*start >= v_end))
return;
/* Extend the range to be PUD aligned for a worst case scenario */
- a_start = ALIGN_DOWN(*start, PUD_SIZE);
- a_end = ALIGN(*end, PUD_SIZE);
+ if (*start > v_start)
+ *start = ALIGN_DOWN(*start, PUD_SIZE);
- /*
- * Intersect the range with the vma range, since pmd sharing won't be
- * across vma after all
- */
- *start = max(vma->vm_start, a_start);
- *end = min(vma->vm_end, a_end);
+ if (*end < v_end)
+ *end = ALIGN(*end, PUD_SIZE);
}
/*
diff --git a/mm/page_io.c b/mm/page_io.c
index 5d882de3fbfd..253623dbbb64 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -38,7 +38,6 @@ static struct bio *get_swap_bio(gfp_t gfp_flags,
bio->bi_iter.bi_sector = map_swap_page(page, &bdev);
bio_set_dev(bio, bdev);
- bio->bi_iter.bi_sector <<= PAGE_SHIFT - 9;
bio->bi_end_io = end_io;
for (i = 0; i < nr; i++)
@@ -261,11 +260,6 @@ int swap_writepage(struct page *page, struct writeback_control *wbc)
return ret;
}
-static sector_t swap_page_sector(struct page *page)
-{
- return (sector_t)__page_file_index(page) << (PAGE_SHIFT - 9);
-}
-
static inline void count_swpout_vm_event(struct page *page)
{
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -324,7 +318,8 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
return ret;
}
- ret = bdev_write_page(sis->bdev, swap_page_sector(page), page, wbc);
+ ret = bdev_write_page(sis->bdev, map_swap_page(page, &sis->bdev),
+ page, wbc);
if (!ret) {
count_swpout_vm_event(page);
return 0;
@@ -374,7 +369,7 @@ int swap_readpage(struct page *page, bool do_poll)
return ret;
}
- ret = bdev_read_page(sis->bdev, swap_page_sector(page), page);
+ ret = bdev_read_page(sis->bdev, map_swap_page(page, &sis->bdev), page);
if (!ret) {
if (trylock_page(page)) {
swap_slot_free_notify(page);
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 2aa7b59077b3..f65d97fe2ef7 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2304,7 +2304,7 @@ sector_t map_swap_page(struct page *page, struct block_device **bdev)
{
swp_entry_t entry;
entry.val = page_private(page);
- return map_swap_entry(entry, bdev);
+ return map_swap_entry(entry, bdev) << (PAGE_SHIFT - 9);
}
/*
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index c6df483b3751..6ed736ea9b59 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -2281,11 +2281,13 @@ static unsigned long zs_can_compact(struct size_class *class)
return obj_wasted * class->pages_per_zspage;
}
-static void __zs_compact(struct zs_pool *pool, struct size_class *class)
+static unsigned long __zs_compact(struct zs_pool *pool,
+ struct size_class *class)
{
struct zs_compact_control cc;
struct zspage *src_zspage;
struct zspage *dst_zspage = NULL;
+ unsigned long pages_freed = 0;
spin_lock(&class->lock);
while ((src_zspage = isolate_zspage(class, true))) {
@@ -2315,7 +2317,7 @@ static void __zs_compact(struct zs_pool *pool, struct size_class *class)
putback_zspage(class, dst_zspage);
if (putback_zspage(class, src_zspage) == ZS_EMPTY) {
free_zspage(pool, class, src_zspage);
- pool->stats.pages_compacted += class->pages_per_zspage;
+ pages_freed += class->pages_per_zspage;
}
spin_unlock(&class->lock);
cond_resched();
@@ -2326,12 +2328,15 @@ static void __zs_compact(struct zs_pool *pool, struct size_class *class)
putback_zspage(class, src_zspage);
spin_unlock(&class->lock);
+
+ return pages_freed;
}
unsigned long zs_compact(struct zs_pool *pool)
{
int i;
struct size_class *class;
+ unsigned long pages_freed = 0;
for (i = ZS_SIZE_CLASSES - 1; i >= 0; i--) {
class = pool->size_class[i];
@@ -2339,10 +2344,11 @@ unsigned long zs_compact(struct zs_pool *pool)
continue;
if (class->index != i)
continue;
- __zs_compact(pool, class);
+ pages_freed += __zs_compact(pool, class);
}
+ atomic_long_add(pages_freed, &pool->stats.pages_compacted);
- return pool->stats.pages_compacted;
+ return pages_freed;
}
EXPORT_SYMBOL_GPL(zs_compact);
@@ -2359,13 +2365,12 @@ static unsigned long zs_shrinker_scan(struct shrinker *shrinker,
struct zs_pool *pool = container_of(shrinker, struct zs_pool,
shrinker);
- pages_freed = pool->stats.pages_compacted;
/*
* Compact classes and calculate compaction delta.
* Can run concurrently with a manually triggered
* (by user) compaction.
*/
- pages_freed = zs_compact(pool) - pages_freed;
+ pages_freed = zs_compact(pool);
return pages_freed ? pages_freed : SHRINK_STOP;
}
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index ebcab5bbadd7..9f645a1d0202 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -305,6 +305,9 @@ void amp_read_loc_assoc_final_data(struct hci_dev *hdev,
struct hci_request req;
int err;
+ if (!mgr)
+ return;
+
cp.phy_handle = hcon->handle;
cp.len_so_far = cpu_to_le16(0);
cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index a097a8613a02..8cf82631190c 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -50,9 +50,8 @@ static BRPORT_ATTR(_name, S_IRUGO | S_IWUSR, \
static int store_flag(struct net_bridge_port *p, unsigned long v,
unsigned long mask)
{
- unsigned long flags;
-
- flags = p->flags;
+ unsigned long flags = p->flags;
+ int err;
if (v)
flags |= mask;
@@ -60,6 +59,10 @@ static int store_flag(struct net_bridge_port *p, unsigned long v,
flags &= ~mask;
if (flags != p->flags) {
+ err = br_switchdev_set_port_flag(p, flags, mask);
+ if (err)
+ return err;
+
p->flags = flags;
br_port_flags_change(p, mask);
}
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 884afb8e9fc4..b3132f11afeb 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3555,7 +3555,7 @@ static int pktgen_thread_worker(void *arg)
struct pktgen_dev *pkt_dev = NULL;
int cpu = t->cpu;
- BUG_ON(smp_processor_id() != cpu);
+ WARN_ON(smp_processor_id() != cpu);
init_waitqueue_head(&t->queue);
complete(&t->start_done);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 82ffadff1e9c..18dc8524e525 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3089,7 +3089,19 @@ EXPORT_SYMBOL(skb_split);
*/
static int skb_prepare_for_shift(struct sk_buff *skb)
{
- return skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+ int ret = 0;
+
+ if (skb_cloned(skb)) {
+ /* Save and restore truesize: pskb_expand_head() may reallocate
+ * memory where ksize(kmalloc(S)) != ksize(kmalloc(S)), but we
+ * cannot change truesize at this point.
+ */
+ unsigned int save_truesize = skb->truesize;
+
+ ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+ skb->truesize = save_truesize;
+ }
+ return ret;
}
/**
diff --git a/scripts/Makefile b/scripts/Makefile
index 25ab143cbe14..fb82adadb680 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -10,6 +10,9 @@
HOST_EXTRACFLAGS += -I$(srctree)/tools/include
+CRYPTO_LIBS = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
+CRYPTO_CFLAGS = $(shell pkg-config --cflags libcrypto 2> /dev/null)
+
hostprogs-$(CONFIG_KALLSYMS) += kallsyms
hostprogs-$(CONFIG_LOGO) += pnmtologo
hostprogs-$(CONFIG_VT) += conmakehash
@@ -22,8 +25,10 @@ hostprogs-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert
HOSTCFLAGS_sortextable.o = -I$(srctree)/tools/include
HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
-HOSTLOADLIBES_sign-file = -lcrypto
-HOSTLOADLIBES_extract-cert = -lcrypto
+HOSTCFLAGS_sign-file.o = $(CRYPTO_CFLAGS)
+HOSTLOADLIBES_sign-file = $(CRYPTO_LIBS)
+HOSTCFLAGS_extract-cert.o = $(CRYPTO_CFLAGS)
+HOSTLOADLIBES_extract-cert = $(CRYPTO_LIBS)
always := $(hostprogs-y) $(hostprogs-m)
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index accd3846f1e3..4f8c1a272df0 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -1191,7 +1191,7 @@ static ssize_t smk_write_net4addr(struct file *file, const char __user *buf,
return -EPERM;
if (*ppos != 0)
return -EINVAL;
- if (count < SMK_NETLBLADDRMIN)
+ if (count < SMK_NETLBLADDRMIN || count > PAGE_SIZE - 1)
return -EINVAL;
data = memdup_user_nul(buf, count);
@@ -1451,7 +1451,7 @@ static ssize_t smk_write_net6addr(struct file *file, const char __user *buf,
return -EPERM;
if (*ppos != 0)
return -EINVAL;
- if (count < SMK_NETLBLADDRMIN)
+ if (count < SMK_NETLBLADDRMIN || count > PAGE_SIZE - 1)
return -EINVAL;
data = memdup_user_nul(buf, count);
@@ -1858,6 +1858,10 @@ static ssize_t smk_write_ambient(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
+ /* Enough data must be present */
+ if (count == 0 || count > PAGE_SIZE)
+ return -EINVAL;
+
data = memdup_user_nul(buf, count);
if (IS_ERR(data))
return PTR_ERR(data);
@@ -2029,6 +2033,9 @@ static ssize_t smk_write_onlycap(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
+ if (count > PAGE_SIZE)
+ return -EINVAL;
+
data = memdup_user_nul(buf, count);
if (IS_ERR(data))
return PTR_ERR(data);
@@ -2116,6 +2123,9 @@ static ssize_t smk_write_unconfined(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
+ if (count > PAGE_SIZE)
+ return -EINVAL;
+
data = memdup_user_nul(buf, count);
if (IS_ERR(data))
return PTR_ERR(data);
@@ -2669,6 +2679,10 @@ static ssize_t smk_write_syslog(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
+ /* Enough data must be present */
+ if (count == 0 || count > PAGE_SIZE)
+ return -EINVAL;
+
data = memdup_user_nul(buf, count);
if (IS_ERR(data))
return PTR_ERR(data);
@@ -2761,10 +2775,13 @@ static ssize_t smk_write_relabel_self(struct file *file, const char __user *buf,
return -EPERM;
/*
+ * No partial write.
* Enough data must be present.
*/
if (*ppos != 0)
return -EINVAL;
+ if (count == 0 || count > PAGE_SIZE)
+ return -EINVAL;
data = memdup_user_nul(buf, count);
if (IS_ERR(data))
prev parent reply other threads:[~2021-03-07 11:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-07 11:11 Linux 4.14.224 Greg Kroah-Hartman
2021-03-07 11:11 ` Greg Kroah-Hartman [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1615115493162116@kroah.com \
--to=gregkh@linuxfoundation.org \
--cc=akpm@linux-foundation.org \
--cc=jslaby@suse.cz \
--cc=linux-kernel@vger.kernel.org \
--cc=lwn@lwn.net \
--cc=stable@vger.kernel.org \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.