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* [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394
@ 2020-02-13 23:41 Philippe Mathieu-Daudé
  2020-02-13 23:41 ` [PATCH 1/4] hw/hppa/dino: Add comments with register name Philippe Mathieu-Daudé
                   ` (4 more replies)
  0 siblings, 5 replies; 13+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-02-13 23:41 UTC (permalink / raw)
  To: Sven Schnelle, qemu-devel, Helge Deller
  Cc: Philippe Mathieu-Daudé, Richard Henderson

Easy fix for the overrun reported by Coverity.

Last 2 patches are RFC because I haven't tested them,
I simply took note while reviewing the datasheet (I
also checked the errata).

Philippe Mathieu-Daudé (4):
  hw/hppa/dino: Add comments with register name
  hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394)
  hw/hppa/dino: Fix bitmask for the PCIROR register
  hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c

 hw/hppa/dino.c | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

-- 
2.21.1



^ permalink raw reply	[flat|nested] 13+ messages in thread

* [PATCH 1/4] hw/hppa/dino: Add comments with register name
  2020-02-13 23:41 [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Philippe Mathieu-Daudé
@ 2020-02-13 23:41 ` Philippe Mathieu-Daudé
  2020-02-15 19:59   ` Helge Deller
  2020-02-13 23:41 ` [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394) Philippe Mathieu-Daudé
                   ` (3 subsequent siblings)
  4 siblings, 1 reply; 13+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-02-13 23:41 UTC (permalink / raw)
  To: Sven Schnelle, qemu-devel, Helge Deller
  Cc: Philippe Mathieu-Daudé, Richard Henderson

Add a comment with the name of each register in the 0x800-0x833 range.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/hppa/dino.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
index 9797a7f0d9..c237ad3b1b 100644
--- a/hw/hppa/dino.c
+++ b/hw/hppa/dino.c
@@ -85,18 +85,18 @@
 
 #define DINO800_REGS ((DINO_TLTIM - DINO_GMASK) / 4)
 static const uint32_t reg800_keep_bits[DINO800_REGS] = {
-            MAKE_64BIT_MASK(0, 1),
-            MAKE_64BIT_MASK(0, 7),
-            MAKE_64BIT_MASK(0, 7),
-            MAKE_64BIT_MASK(0, 8),
-            MAKE_64BIT_MASK(0, 7),
-            MAKE_64BIT_MASK(0, 9),
-            MAKE_64BIT_MASK(0, 32),
-            MAKE_64BIT_MASK(0, 8),
-            MAKE_64BIT_MASK(0, 30),
-            MAKE_64BIT_MASK(0, 25),
-            MAKE_64BIT_MASK(0, 22),
-            MAKE_64BIT_MASK(0, 9),
+    MAKE_64BIT_MASK(0, 1),  /* GMASK */
+    MAKE_64BIT_MASK(0, 7),  /* PAMR */
+    MAKE_64BIT_MASK(0, 7),  /* PAPR */
+    MAKE_64BIT_MASK(0, 8),  /* DAMODE */
+    MAKE_64BIT_MASK(0, 7),  /* PCICMD */
+    MAKE_64BIT_MASK(0, 9),  /* PCISTS */
+    MAKE_64BIT_MASK(0, 32), /* Undefined */
+    MAKE_64BIT_MASK(0, 8),  /* MLTIM */
+    MAKE_64BIT_MASK(0, 30), /* BRDG_FEAT */
+    MAKE_64BIT_MASK(0, 25), /* PCIROR */
+    MAKE_64BIT_MASK(0, 22), /* PCIWOR */
+    MAKE_64BIT_MASK(0, 9),  /* TLTIM */
 };
 
 typedef struct DinoState {
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 13+ messages in thread

* [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394)
  2020-02-13 23:41 [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Philippe Mathieu-Daudé
  2020-02-13 23:41 ` [PATCH 1/4] hw/hppa/dino: Add comments with register name Philippe Mathieu-Daudé
@ 2020-02-13 23:41 ` Philippe Mathieu-Daudé
  2020-02-15 20:08   ` Helge Deller
  2020-02-17 17:37   ` Peter Maydell
  2020-02-13 23:41 ` [RFC PATCH 3/4] hw/hppa/dino: Fix PCIROR register access bitmask Philippe Mathieu-Daudé
                   ` (2 subsequent siblings)
  4 siblings, 2 replies; 13+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-02-13 23:41 UTC (permalink / raw)
  To: Sven Schnelle, qemu-devel, Helge Deller
  Cc: Philippe Mathieu-Daudé, Richard Henderson

Coverity reports:

  *** CID 1419393:  Memory - corruptions  (OVERRUN)
  /hw/hppa/dino.c: 363 in dino_chip_write_with_attrs()
  357             /* These registers are read-only.  */
  358             break;
  359
  360         case DINO_GMASK ... DINO_TLTIM:
  361             i = (addr - DINO_GMASK) / 4;
  362             val &= reg800_keep_bits[i];
  >>>     CID 1419393:  Memory - corruptions  (OVERRUN)
  >>>     Overrunning array "s->reg800" of 12 4-byte elements at element index 12 (byte offset 48) using index "i" (which evaluates to 12).
  363             s->reg800[i] = val;
  364             break;
  365
  366         default:
  367             /* Controlled by dino_chip_mem_valid above.  */
  368             g_assert_not_reached();

and:

  *** CID 1419394:  Memory - illegal accesses  (OVERRUN)
  /hw/hppa/dino.c: 362 in dino_chip_write_with_attrs()
  356         case DINO_IRR1:
  357             /* These registers are read-only.  */
  358             break;
  359
  360         case DINO_GMASK ... DINO_TLTIM:
  361             i = (addr - DINO_GMASK) / 4;
  >>>     CID 1419394:  Memory - illegal accesses  (OVERRUN)
  >>>     Overrunning array "reg800_keep_bits" of 12 4-byte elements at element index 12 (byte offset 48) using index "i" (which evaluates to 12).
  362             val &= reg800_keep_bits[i];
  363             s->reg800[i] = val;
  364             break;
  365
  366         default:
  367             /* Controlled by dino_chip_mem_valid above.  */

Indeed the array should contain 13 entries, the undocumented
register 0x82c is missing. Fix by increasing the array size
and adding the missing register.

CID 1419393 can be verified with:

  $ echo x 0xfff80830 | hppa-softmmu/qemu-system-hppa -S -monitor stdio -display none
  QEMU 4.2.50 monitor - type 'help' for more information
  (qemu) x 0xfff80830
  qemu/hw/hppa/dino.c:267:15: runtime error: index 12 out of bounds for type 'uint32_t [12]'
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/phil/source/qemu/hw/hppa/dino.c:267:15 in
  00000000fff80830: 0x00000000

and CID 1419394 with:

  $ echo writeb 0xfff80830 0x69 \
    | hppa-softmmu/qemu-system-hppa -S -accel qtest -qtest stdio -display none
  [I 1581634452.654113] OPENED
  [R +4.105415] writeb 0xfff80830 0x69
  qemu/hw/hppa/dino.c:362:16: runtime error: index 12 out of bounds for type 'const uint32_t [12]'
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior qemu/hw/hppa/dino.c:362:16 in
  =================================================================
  ==29607==ERROR: AddressSanitizer: global-buffer-overflow on address 0x5577dae32f30 at pc 0x5577d93f2463 bp 0x7ffd97ea11b0 sp 0x7ffd97ea11a8
  READ of size 4 at 0x5577dae32f30 thread T0
      #0 0x5577d93f2462 in dino_chip_write_with_attrs qemu/hw/hppa/dino.c:362:16
      #1 0x5577d9025664 in memory_region_write_with_attrs_accessor qemu/memory.c:503:12
      #2 0x5577d9024920 in access_with_adjusted_size qemu/memory.c:539:18
      #3 0x5577d9023608 in memory_region_dispatch_write qemu/memory.c:1482:13
      #4 0x5577d8e3177a in flatview_write_continue qemu/exec.c:3166:23
      #5 0x5577d8e20357 in flatview_write qemu/exec.c:3206:14
      #6 0x5577d8e1fef4 in address_space_write qemu/exec.c:3296:18
      #7 0x5577d8e20693 in address_space_rw qemu/exec.c:3306:16
      #8 0x5577d9011595 in qtest_process_command qemu/qtest.c:432:13
      #9 0x5577d900d19f in qtest_process_inbuf qemu/qtest.c:705:9
      #10 0x5577d900ca22 in qtest_read qemu/qtest.c:717:5
      #11 0x5577da8c4254 in qemu_chr_be_write_impl qemu/chardev/char.c:183:9
      #12 0x5577da8c430c in qemu_chr_be_write qemu/chardev/char.c:195:9
      #13 0x5577da8cf587 in fd_chr_read qemu/chardev/char-fd.c:68:9
      #14 0x5577da9836cd in qio_channel_fd_source_dispatch qemu/io/channel-watch.c:84:12
      #15 0x7faf44509ecc in g_main_context_dispatch (/lib64/libglib-2.0.so.0+0x4fecc)
      #16 0x5577dab75f96 in glib_pollfds_poll qemu/util/main-loop.c:219:9
      #17 0x5577dab74797 in os_host_main_loop_wait qemu/util/main-loop.c:242:5
      #18 0x5577dab7435a in main_loop_wait qemu/util/main-loop.c:518:11
      #19 0x5577d9514eb3 in main_loop qemu/vl.c:1682:9
      #20 0x5577d950699d in main qemu/vl.c:4450:5
      #21 0x7faf41a87f42 in __libc_start_main (/lib64/libc.so.6+0x23f42)
      #22 0x5577d8cd4d4d in _start (qemu/build/sanitizer/hppa-softmmu/qemu-system-hppa+0x1256d4d)

  0x5577dae32f30 is located 0 bytes to the right of global variable 'reg800_keep_bits' defined in 'qemu/hw/hppa/dino.c:87:23' (0x5577dae32f00) of size 48
  SUMMARY: AddressSanitizer: global-buffer-overflow qemu/hw/hppa/dino.c:362:16 in dino_chip_write_with_attrs
  Shadow bytes around the buggy address:
    0x0aaf7b5be590: 00 f9 f9 f9 f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9
    0x0aaf7b5be5a0: 07 f9 f9 f9 f9 f9 f9 f9 07 f9 f9 f9 f9 f9 f9 f9
    0x0aaf7b5be5b0: 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
    0x0aaf7b5be5c0: 00 00 00 02 f9 f9 f9 f9 00 00 00 00 00 00 00 00
    0x0aaf7b5be5d0: 00 00 00 00 00 00 00 00 00 00 00 03 f9 f9 f9 f9
  =>0x0aaf7b5be5e0: 00 00 00 00 00 00[f9]f9 f9 f9 f9 f9 00 00 00 00
    0x0aaf7b5be5f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x0aaf7b5be600: 00 00 01 f9 f9 f9 f9 f9 00 00 00 00 07 f9 f9 f9
    0x0aaf7b5be610: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
    0x0aaf7b5be620: 00 00 00 05 f9 f9 f9 f9 00 00 00 00 07 f9 f9 f9
    0x0aaf7b5be630: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 07 f9 f9 f9
  Shadow byte legend (one shadow byte represents 8 application bytes):
    Addressable:           00
    Partially addressable: 01 02 03 04 05 06 07
    Heap left redzone:       fa
    Freed heap region:       fd
    Stack left redzone:      f1
    Stack mid redzone:       f2
    Stack right redzone:     f3
    Stack after return:      f5
    Stack use after scope:   f8
    Global redzone:          f9
    Global init order:       f6
    Poisoned by user:        f7
    Container overflow:      fc
    Array cookie:            ac
    Intra object redzone:    bb
    ASan internal:           fe
    Left alloca redzone:     ca
    Right alloca redzone:    cb
    Shadow gap:              cc
  ==29607==ABORTING

Fixes: Covertiy CID 1419393 and 1419394 (commit 18092598a5)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/hppa/dino.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
index c237ad3b1b..8868e31793 100644
--- a/hw/hppa/dino.c
+++ b/hw/hppa/dino.c
@@ -83,7 +83,7 @@
 #define DINO_PCI_HOST_BRIDGE(obj) \
     OBJECT_CHECK(DinoState, (obj), TYPE_DINO_PCI_HOST_BRIDGE)
 
-#define DINO800_REGS ((DINO_TLTIM - DINO_GMASK) / 4)
+#define DINO800_REGS (1 + (DINO_TLTIM - DINO_GMASK) / 4)
 static const uint32_t reg800_keep_bits[DINO800_REGS] = {
     MAKE_64BIT_MASK(0, 1),  /* GMASK */
     MAKE_64BIT_MASK(0, 7),  /* PAMR */
@@ -96,6 +96,7 @@ static const uint32_t reg800_keep_bits[DINO800_REGS] = {
     MAKE_64BIT_MASK(0, 30), /* BRDG_FEAT */
     MAKE_64BIT_MASK(0, 25), /* PCIROR */
     MAKE_64BIT_MASK(0, 22), /* PCIWOR */
+    MAKE_64BIT_MASK(0, 32), /* Undocumented */
     MAKE_64BIT_MASK(0, 9),  /* TLTIM */
 };
 
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 13+ messages in thread

* [RFC PATCH 3/4] hw/hppa/dino: Fix PCIROR register access bitmask
  2020-02-13 23:41 [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Philippe Mathieu-Daudé
  2020-02-13 23:41 ` [PATCH 1/4] hw/hppa/dino: Add comments with register name Philippe Mathieu-Daudé
  2020-02-13 23:41 ` [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394) Philippe Mathieu-Daudé
@ 2020-02-13 23:41 ` Philippe Mathieu-Daudé
  2020-02-15 20:49   ` Helge Deller
  2020-02-13 23:41 ` [RFC PATCH 4/4] hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c Philippe Mathieu-Daudé
  2020-02-16  1:44 ` [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Richard Henderson
  4 siblings, 1 reply; 13+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-02-13 23:41 UTC (permalink / raw)
  To: Sven Schnelle, qemu-devel, Helge Deller
  Cc: Philippe Mathieu-Daudé, Richard Henderson

Only 24 bits of the PCIROR register are documented
(see pp. 37 of datasheet referenced in this file header).

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/hppa/dino.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
index 8868e31793..be799aad43 100644
--- a/hw/hppa/dino.c
+++ b/hw/hppa/dino.c
@@ -94,7 +94,7 @@ static const uint32_t reg800_keep_bits[DINO800_REGS] = {
     MAKE_64BIT_MASK(0, 32), /* Undefined */
     MAKE_64BIT_MASK(0, 8),  /* MLTIM */
     MAKE_64BIT_MASK(0, 30), /* BRDG_FEAT */
-    MAKE_64BIT_MASK(0, 25), /* PCIROR */
+    MAKE_64BIT_MASK(0, 24), /* PCIROR */
     MAKE_64BIT_MASK(0, 22), /* PCIWOR */
     MAKE_64BIT_MASK(0, 32), /* Undocumented */
     MAKE_64BIT_MASK(0, 9),  /* TLTIM */
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 13+ messages in thread

* [RFC PATCH 4/4] hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c
  2020-02-13 23:41 [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Philippe Mathieu-Daudé
                   ` (2 preceding siblings ...)
  2020-02-13 23:41 ` [RFC PATCH 3/4] hw/hppa/dino: Fix PCIROR register access bitmask Philippe Mathieu-Daudé
@ 2020-02-13 23:41 ` Philippe Mathieu-Daudé
  2020-02-15 20:49   ` Helge Deller
  2020-02-16  1:44 ` [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Richard Henderson
  4 siblings, 1 reply; 13+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-02-13 23:41 UTC (permalink / raw)
  To: Sven Schnelle, qemu-devel, Helge Deller
  Cc: Philippe Mathieu-Daudé, Richard Henderson

Register 0x818 is documented as 'undefined', and register
0x82c is not documented. Refuse their access.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/hppa/dino.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
index be799aad43..2b1b38c58a 100644
--- a/hw/hppa/dino.c
+++ b/hw/hppa/dino.c
@@ -181,7 +181,9 @@ static bool dino_chip_mem_valid(void *opaque, hwaddr addr,
     case DINO_IO_ADDR_EN:
     case DINO_PCI_IO_DATA:
     case DINO_TOC_ADDR:
-    case DINO_GMASK ... DINO_TLTIM:
+    case DINO_GMASK ... DINO_PCISTS:
+    case DINO_MLTIM ... DINO_PCIWOR:
+    case DINO_TLTIM:
         ret = true;
         break;
     case DINO_PCI_IO_DATA + 2:
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 13+ messages in thread

* Re: [PATCH 1/4] hw/hppa/dino: Add comments with register name
  2020-02-13 23:41 ` [PATCH 1/4] hw/hppa/dino: Add comments with register name Philippe Mathieu-Daudé
@ 2020-02-15 19:59   ` Helge Deller
  0 siblings, 0 replies; 13+ messages in thread
From: Helge Deller @ 2020-02-15 19:59 UTC (permalink / raw)
  To: Philippe Mathieu-Daudé, Sven Schnelle, qemu-devel; +Cc: Richard Henderson

On 14.02.20 00:41, Philippe Mathieu-Daudé wrote:
> Add a comment with the name of each register in the 0x800-0x833 range.
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Acked-by: Helge Deller <deller@gmx.de>

> ---
>  hw/hppa/dino.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
> index 9797a7f0d9..c237ad3b1b 100644
> --- a/hw/hppa/dino.c
> +++ b/hw/hppa/dino.c
> @@ -85,18 +85,18 @@
>
>  #define DINO800_REGS ((DINO_TLTIM - DINO_GMASK) / 4)
>  static const uint32_t reg800_keep_bits[DINO800_REGS] = {
> -            MAKE_64BIT_MASK(0, 1),
> -            MAKE_64BIT_MASK(0, 7),
> -            MAKE_64BIT_MASK(0, 7),
> -            MAKE_64BIT_MASK(0, 8),
> -            MAKE_64BIT_MASK(0, 7),
> -            MAKE_64BIT_MASK(0, 9),
> -            MAKE_64BIT_MASK(0, 32),
> -            MAKE_64BIT_MASK(0, 8),
> -            MAKE_64BIT_MASK(0, 30),
> -            MAKE_64BIT_MASK(0, 25),
> -            MAKE_64BIT_MASK(0, 22),
> -            MAKE_64BIT_MASK(0, 9),
> +    MAKE_64BIT_MASK(0, 1),  /* GMASK */
> +    MAKE_64BIT_MASK(0, 7),  /* PAMR */
> +    MAKE_64BIT_MASK(0, 7),  /* PAPR */
> +    MAKE_64BIT_MASK(0, 8),  /* DAMODE */
> +    MAKE_64BIT_MASK(0, 7),  /* PCICMD */
> +    MAKE_64BIT_MASK(0, 9),  /* PCISTS */
> +    MAKE_64BIT_MASK(0, 32), /* Undefined */
> +    MAKE_64BIT_MASK(0, 8),  /* MLTIM */
> +    MAKE_64BIT_MASK(0, 30), /* BRDG_FEAT */
> +    MAKE_64BIT_MASK(0, 25), /* PCIROR */
> +    MAKE_64BIT_MASK(0, 22), /* PCIWOR */
> +    MAKE_64BIT_MASK(0, 9),  /* TLTIM */
>  };
>
>  typedef struct DinoState {
>



^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394)
  2020-02-13 23:41 ` [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394) Philippe Mathieu-Daudé
@ 2020-02-15 20:08   ` Helge Deller
  2020-02-17 17:37   ` Peter Maydell
  1 sibling, 0 replies; 13+ messages in thread
From: Helge Deller @ 2020-02-15 20:08 UTC (permalink / raw)
  To: Philippe Mathieu-Daudé, Sven Schnelle, qemu-devel; +Cc: Richard Henderson

On 14.02.20 00:41, Philippe Mathieu-Daudé wrote:
>
> Fixes: Covertiy CID 1419393 and 1419394 (commit 18092598a5)
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Acked-by: Helge Deller <deller@gmx.de>

> ---
>  hw/hppa/dino.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
> index c237ad3b1b..8868e31793 100644
> --- a/hw/hppa/dino.c
> +++ b/hw/hppa/dino.c
> @@ -83,7 +83,7 @@
>  #define DINO_PCI_HOST_BRIDGE(obj) \
>      OBJECT_CHECK(DinoState, (obj), TYPE_DINO_PCI_HOST_BRIDGE)
>
> -#define DINO800_REGS ((DINO_TLTIM - DINO_GMASK) / 4)
> +#define DINO800_REGS (1 + (DINO_TLTIM - DINO_GMASK) / 4)
>  static const uint32_t reg800_keep_bits[DINO800_REGS] = {
>      MAKE_64BIT_MASK(0, 1),  /* GMASK */
>      MAKE_64BIT_MASK(0, 7),  /* PAMR */
> @@ -96,6 +96,7 @@ static const uint32_t reg800_keep_bits[DINO800_REGS] = {
>      MAKE_64BIT_MASK(0, 30), /* BRDG_FEAT */
>      MAKE_64BIT_MASK(0, 25), /* PCIROR */
>      MAKE_64BIT_MASK(0, 22), /* PCIWOR */
> +    MAKE_64BIT_MASK(0, 32), /* Undocumented */
>      MAKE_64BIT_MASK(0, 9),  /* TLTIM */
>  };
>
>



^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [RFC PATCH 3/4] hw/hppa/dino: Fix PCIROR register access bitmask
  2020-02-13 23:41 ` [RFC PATCH 3/4] hw/hppa/dino: Fix PCIROR register access bitmask Philippe Mathieu-Daudé
@ 2020-02-15 20:49   ` Helge Deller
  0 siblings, 0 replies; 13+ messages in thread
From: Helge Deller @ 2020-02-15 20:49 UTC (permalink / raw)
  To: Philippe Mathieu-Daudé, Sven Schnelle, qemu-devel; +Cc: Richard Henderson

On 14.02.20 00:41, Philippe Mathieu-Daudé wrote:
> Only 24 bits of the PCIROR register are documented
> (see pp. 37 of datasheet referenced in this file header).
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Acked-by: Helge Deller <deller@gmx.de>

> ---
>  hw/hppa/dino.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
> index 8868e31793..be799aad43 100644
> --- a/hw/hppa/dino.c
> +++ b/hw/hppa/dino.c
> @@ -94,7 +94,7 @@ static const uint32_t reg800_keep_bits[DINO800_REGS] = {
>      MAKE_64BIT_MASK(0, 32), /* Undefined */
>      MAKE_64BIT_MASK(0, 8),  /* MLTIM */
>      MAKE_64BIT_MASK(0, 30), /* BRDG_FEAT */
> -    MAKE_64BIT_MASK(0, 25), /* PCIROR */
> +    MAKE_64BIT_MASK(0, 24), /* PCIROR */
>      MAKE_64BIT_MASK(0, 22), /* PCIWOR */
>      MAKE_64BIT_MASK(0, 32), /* Undocumented */
>      MAKE_64BIT_MASK(0, 9),  /* TLTIM */
>



^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [RFC PATCH 4/4] hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c
  2020-02-13 23:41 ` [RFC PATCH 4/4] hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c Philippe Mathieu-Daudé
@ 2020-02-15 20:49   ` Helge Deller
  0 siblings, 0 replies; 13+ messages in thread
From: Helge Deller @ 2020-02-15 20:49 UTC (permalink / raw)
  To: Philippe Mathieu-Daudé, Sven Schnelle, qemu-devel; +Cc: Richard Henderson

On 14.02.20 00:41, Philippe Mathieu-Daudé wrote:
> Register 0x818 is documented as 'undefined', and register
> 0x82c is not documented. Refuse their access.
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Acked-by: Helge Deller <deller@gmx.de>



> ---
>  hw/hppa/dino.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
> index be799aad43..2b1b38c58a 100644
> --- a/hw/hppa/dino.c
> +++ b/hw/hppa/dino.c
> @@ -181,7 +181,9 @@ static bool dino_chip_mem_valid(void *opaque, hwaddr addr,
>      case DINO_IO_ADDR_EN:
>      case DINO_PCI_IO_DATA:
>      case DINO_TOC_ADDR:
> -    case DINO_GMASK ... DINO_TLTIM:
> +    case DINO_GMASK ... DINO_PCISTS:
> +    case DINO_MLTIM ... DINO_PCIWOR:
> +    case DINO_TLTIM:
>          ret = true;
>          break;
>      case DINO_PCI_IO_DATA + 2:
>



^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394
  2020-02-13 23:41 [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Philippe Mathieu-Daudé
                   ` (3 preceding siblings ...)
  2020-02-13 23:41 ` [RFC PATCH 4/4] hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c Philippe Mathieu-Daudé
@ 2020-02-16  1:44 ` Richard Henderson
  4 siblings, 0 replies; 13+ messages in thread
From: Richard Henderson @ 2020-02-16  1:44 UTC (permalink / raw)
  To: Philippe Mathieu-Daudé, Sven Schnelle, qemu-devel, Helge Deller

On 2/13/20 3:41 PM, Philippe Mathieu-Daudé wrote:
> Easy fix for the overrun reported by Coverity.
> 
> Last 2 patches are RFC because I haven't tested them,
> I simply took note while reviewing the datasheet (I
> also checked the errata).
> 
> Philippe Mathieu-Daudé (4):
>   hw/hppa/dino: Add comments with register name
>   hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394)
>   hw/hppa/dino: Fix bitmask for the PCIROR register
>   hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c
> 
>  hw/hppa/dino.c | 31 +++++++++++++++++--------------
>  1 file changed, 17 insertions(+), 14 deletions(-)
> 

Queued to tgt-hppa.


r~


^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394)
  2020-02-13 23:41 ` [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394) Philippe Mathieu-Daudé
  2020-02-15 20:08   ` Helge Deller
@ 2020-02-17 17:37   ` Peter Maydell
  2020-02-18  6:19     ` Philippe Mathieu-Daudé
  1 sibling, 1 reply; 13+ messages in thread
From: Peter Maydell @ 2020-02-17 17:37 UTC (permalink / raw)
  To: Philippe Mathieu-Daudé
  Cc: Helge Deller, Sven Schnelle, QEMU Developers, Richard Henderson

On Thu, 13 Feb 2020 at 23:44, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:


> Fixes: Covertiy CID 1419393 and 1419394 (commit 18092598a5)
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

I think this also fixes CID 1419387 ?

thanks
-- PMM


^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394)
  2020-02-17 17:37   ` Peter Maydell
@ 2020-02-18  6:19     ` Philippe Mathieu-Daudé
  2020-02-18  6:28       ` Philippe Mathieu-Daudé
  0 siblings, 1 reply; 13+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-02-18  6:19 UTC (permalink / raw)
  To: Peter Maydell
  Cc: Helge Deller, Sven Schnelle, QEMU Developers, Richard Henderson

On Mon, Feb 17, 2020 at 6:37 PM Peter Maydell <peter.maydell@linaro.org> wrote:
> On Thu, 13 Feb 2020 at 23:44, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
>
> > Fixes: Covertiy CID 1419393 and 1419394 (commit 18092598a5)
> > Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>
> I think this also fixes CID 1419387 ?

Ah I missed this one, indeed it does.

> thanks
> -- PMM


^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394)
  2020-02-18  6:19     ` Philippe Mathieu-Daudé
@ 2020-02-18  6:28       ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 13+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-02-18  6:28 UTC (permalink / raw)
  To: Peter Maydell
  Cc: Helge Deller, Sven Schnelle, QEMU Developers, Richard Henderson

On Tue, Feb 18, 2020 at 7:19 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> On Mon, Feb 17, 2020 at 6:37 PM Peter Maydell <peter.maydell@linaro.org> wrote:
> > On Thu, 13 Feb 2020 at 23:44, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> >
> >
> > > Fixes: Covertiy CID 1419393 and 1419394 (commit 18092598a5)
> > > Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> >
> > I think this also fixes CID 1419387 ?
>
> Ah I missed this one, indeed it does.

The description is erroneous, I'll respin.

>
> > thanks
> > -- PMM


^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2020-02-18  6:29 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-13 23:41 [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Philippe Mathieu-Daudé
2020-02-13 23:41 ` [PATCH 1/4] hw/hppa/dino: Add comments with register name Philippe Mathieu-Daudé
2020-02-15 19:59   ` Helge Deller
2020-02-13 23:41 ` [PATCH 2/4] hw/hppa/dino: Fix reg800_keep_bits[] overrun (CID 1419393 & 1419394) Philippe Mathieu-Daudé
2020-02-15 20:08   ` Helge Deller
2020-02-17 17:37   ` Peter Maydell
2020-02-18  6:19     ` Philippe Mathieu-Daudé
2020-02-18  6:28       ` Philippe Mathieu-Daudé
2020-02-13 23:41 ` [RFC PATCH 3/4] hw/hppa/dino: Fix PCIROR register access bitmask Philippe Mathieu-Daudé
2020-02-15 20:49   ` Helge Deller
2020-02-13 23:41 ` [RFC PATCH 4/4] hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c Philippe Mathieu-Daudé
2020-02-15 20:49   ` Helge Deller
2020-02-16  1:44 ` [PATCH 0/4] hw/hppa/dino: Fix Coverity 1419393 & 1419394 Richard Henderson

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