* Re: [PATCH 1/2] virtio-rng: implement entropy leak feature
[not found] ` <20230119184349.74072-2-bchalios@amazon.es>
@ 2023-01-19 20:17 ` kernel test robot
2023-01-20 1:24 ` kernel test robot
2023-01-20 12:32 ` Michael S. Tsirkin
2 siblings, 0 replies; 3+ messages in thread
From: kernel test robot @ 2023-01-19 20:17 UTC (permalink / raw)
To: Babis Chalios, Olivia Mackall, Herbert Xu, Michael S. Tsirkin,
Jason Wang, linux-crypto, linux-kernel, virtualization
Cc: xmarcalx, Jason, amit, graf, oe-kbuild-all
Hi Babis,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.2-rc4 next-20230119]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Babis-Chalios/virtio-rng-implement-entropy-leak-feature/20230120-024631
patch link: https://lore.kernel.org/r/20230119184349.74072-2-bchalios%40amazon.es
patch subject: [PATCH 1/2] virtio-rng: implement entropy leak feature
config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20230120/202301200407.n4URhGEQ-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/686114cbba5005584d458ad44164b4a4b88135f5
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Babis-Chalios/virtio-rng-implement-entropy-leak-feature/20230120-024631
git checkout 686114cbba5005584d458ad44164b4a4b88135f5
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash drivers/char/hw_random/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/err.h:8,
from drivers/char/hw_random/virtio-rng.c:8:
>> arch/parisc/include/uapi/asm/errno.h:7: warning: "ENOMSG" redefined
7 | #define ENOMSG 35 /* No message of desired type */
|
In file included from drivers/char/hw_random/virtio-rng.c:7:
include/uapi/asm-generic/errno.h:23: note: this is the location of the previous definition
23 | #define ENOMSG 42 /* No message of desired type */
|
>> arch/parisc/include/uapi/asm/errno.h:8: warning: "EIDRM" redefined
8 | #define EIDRM 36 /* Identifier removed */
|
include/uapi/asm-generic/errno.h:24: note: this is the location of the previous definition
24 | #define EIDRM 43 /* Identifier removed */
|
>> arch/parisc/include/uapi/asm/errno.h:9: warning: "ECHRNG" redefined
9 | #define ECHRNG 37 /* Channel number out of range */
|
include/uapi/asm-generic/errno.h:25: note: this is the location of the previous definition
25 | #define ECHRNG 44 /* Channel number out of range */
|
>> arch/parisc/include/uapi/asm/errno.h:10: warning: "EL2NSYNC" redefined
10 | #define EL2NSYNC 38 /* Level 2 not synchronized */
|
include/uapi/asm-generic/errno.h:26: note: this is the location of the previous definition
26 | #define EL2NSYNC 45 /* Level 2 not synchronized */
|
>> arch/parisc/include/uapi/asm/errno.h:11: warning: "EL3HLT" redefined
11 | #define EL3HLT 39 /* Level 3 halted */
|
include/uapi/asm-generic/errno.h:27: note: this is the location of the previous definition
27 | #define EL3HLT 46 /* Level 3 halted */
|
>> arch/parisc/include/uapi/asm/errno.h:12: warning: "EL3RST" redefined
12 | #define EL3RST 40 /* Level 3 reset */
|
include/uapi/asm-generic/errno.h:28: note: this is the location of the previous definition
28 | #define EL3RST 47 /* Level 3 reset */
|
>> arch/parisc/include/uapi/asm/errno.h:13: warning: "ELNRNG" redefined
13 | #define ELNRNG 41 /* Link number out of range */
|
include/uapi/asm-generic/errno.h:29: note: this is the location of the previous definition
29 | #define ELNRNG 48 /* Link number out of range */
|
>> arch/parisc/include/uapi/asm/errno.h:14: warning: "EUNATCH" redefined
14 | #define EUNATCH 42 /* Protocol driver not attached */
|
include/uapi/asm-generic/errno.h:30: note: this is the location of the previous definition
30 | #define EUNATCH 49 /* Protocol driver not attached */
|
>> arch/parisc/include/uapi/asm/errno.h:15: warning: "ENOCSI" redefined
15 | #define ENOCSI 43 /* No CSI structure available */
|
include/uapi/asm-generic/errno.h:31: note: this is the location of the previous definition
31 | #define ENOCSI 50 /* No CSI structure available */
|
>> arch/parisc/include/uapi/asm/errno.h:16: warning: "EL2HLT" redefined
16 | #define EL2HLT 44 /* Level 2 halted */
|
include/uapi/asm-generic/errno.h:32: note: this is the location of the previous definition
32 | #define EL2HLT 51 /* Level 2 halted */
|
>> arch/parisc/include/uapi/asm/errno.h:17: warning: "EDEADLK" redefined
17 | #define EDEADLK 45 /* Resource deadlock would occur */
|
include/uapi/asm-generic/errno.h:7: note: this is the location of the previous definition
7 | #define EDEADLK 35 /* Resource deadlock would occur */
|
>> arch/parisc/include/uapi/asm/errno.h:19: warning: "ENOLCK" redefined
19 | #define ENOLCK 46 /* No record locks available */
|
include/uapi/asm-generic/errno.h:9: note: this is the location of the previous definition
9 | #define ENOLCK 37 /* No record locks available */
|
>> arch/parisc/include/uapi/asm/errno.h:20: warning: "EILSEQ" redefined
20 | #define EILSEQ 47 /* Illegal byte sequence */
|
include/uapi/asm-generic/errno.h:67: note: this is the location of the previous definition
67 | #define EILSEQ 84 /* Illegal byte sequence */
|
>> arch/parisc/include/uapi/asm/errno.h:22: warning: "ENONET" redefined
22 | #define ENONET 50 /* Machine is not on the network */
|
include/uapi/asm-generic/errno.h:47: note: this is the location of the previous definition
47 | #define ENONET 64 /* Machine is not on the network */
|
>> arch/parisc/include/uapi/asm/errno.h:23: warning: "ENODATA" redefined
23 | #define ENODATA 51 /* No data available */
|
include/uapi/asm-generic/errno.h:44: note: this is the location of the previous definition
44 | #define ENODATA 61 /* No data available */
|
>> arch/parisc/include/uapi/asm/errno.h:24: warning: "ETIME" redefined
24 | #define ETIME 52 /* Timer expired */
|
include/uapi/asm-generic/errno.h:45: note: this is the location of the previous definition
45 | #define ETIME 62 /* Timer expired */
|
>> arch/parisc/include/uapi/asm/errno.h:25: warning: "ENOSR" redefined
25 | #define ENOSR 53 /* Out of streams resources */
|
include/uapi/asm-generic/errno.h:46: note: this is the location of the previous definition
46 | #define ENOSR 63 /* Out of streams resources */
|
>> arch/parisc/include/uapi/asm/errno.h:26: warning: "ENOSTR" redefined
26 | #define ENOSTR 54 /* Device not a stream */
|
include/uapi/asm-generic/errno.h:43: note: this is the location of the previous definition
43 | #define ENOSTR 60 /* Device not a stream */
|
>> arch/parisc/include/uapi/asm/errno.h:27: warning: "ENOPKG" redefined
27 | #define ENOPKG 55 /* Package not installed */
|
include/uapi/asm-generic/errno.h:48: note: this is the location of the previous definition
48 | #define ENOPKG 65 /* Package not installed */
|
>> arch/parisc/include/uapi/asm/errno.h:29: warning: "ENOLINK" redefined
29 | #define ENOLINK 57 /* Link has been severed */
|
include/uapi/asm-generic/errno.h:50: note: this is the location of the previous definition
50 | #define ENOLINK 67 /* Link has been severed */
|
arch/parisc/include/uapi/asm/errno.h:30: warning: "EADV" redefined
30 | #define EADV 58 /* Advertise error */
|
include/uapi/asm-generic/errno.h:51: note: this is the location of the previous definition
51 | #define EADV 68 /* Advertise error */
|
arch/parisc/include/uapi/asm/errno.h:31: warning: "ESRMNT" redefined
31 | #define ESRMNT 59 /* Srmount error */
|
include/uapi/asm-generic/errno.h:52: note: this is the location of the previous definition
52 | #define ESRMNT 69 /* Srmount error */
|
arch/parisc/include/uapi/asm/errno.h:32: warning: "ECOMM" redefined
32 | #define ECOMM 60 /* Communication error on send */
|
include/uapi/asm-generic/errno.h:53: note: this is the location of the previous definition
53 | #define ECOMM 70 /* Communication error on send */
|
arch/parisc/include/uapi/asm/errno.h:33: warning: "EPROTO" redefined
33 | #define EPROTO 61 /* Protocol error */
|
include/uapi/asm-generic/errno.h:54: note: this is the location of the previous definition
54 | #define EPROTO 71 /* Protocol error */
|
arch/parisc/include/uapi/asm/errno.h:35: warning: "EMULTIHOP" redefined
35 | #define EMULTIHOP 64 /* Multihop attempted */
|
include/uapi/asm-generic/errno.h:55: note: this is the location of the previous definition
55 | #define EMULTIHOP 72 /* Multihop attempted */
|
arch/parisc/include/uapi/asm/errno.h:37: warning: "EDOTDOT" redefined
37 | #define EDOTDOT 66 /* RFS specific error */
|
include/uapi/asm-generic/errno.h:56: note: this is the location of the previous definition
56 | #define EDOTDOT 73 /* RFS specific error */
|
arch/parisc/include/uapi/asm/errno.h:38: warning: "EBADMSG" redefined
38 | #define EBADMSG 67 /* Not a data message */
|
include/uapi/asm-generic/errno.h:57: note: this is the location of the previous definition
57 | #define EBADMSG 74 /* Not a data message */
|
arch/parisc/include/uapi/asm/errno.h:39: warning: "EUSERS" redefined
39 | #define EUSERS 68 /* Too many users */
|
include/uapi/asm-generic/errno.h:70: note: this is the location of the previous definition
70 | #define EUSERS 87 /* Too many users */
|
arch/parisc/include/uapi/asm/errno.h:40: warning: "EDQUOT" redefined
40 | #define EDQUOT 69 /* Quota exceeded */
|
include/uapi/asm-generic/errno.h:105: note: this is the location of the previous definition
105 | #define EDQUOT 122 /* Quota exceeded */
|
arch/parisc/include/uapi/asm/errno.h:41: warning: "ESTALE" redefined
41 | #define ESTALE 70 /* Stale file handle */
|
include/uapi/asm-generic/errno.h:99: note: this is the location of the previous definition
99 | #define ESTALE 116 /* Stale file handle */
|
arch/parisc/include/uapi/asm/errno.h:42: warning: "EREMOTE" redefined
42 | #define EREMOTE 71 /* Object is remote */
|
include/uapi/asm-generic/errno.h:49: note: this is the location of the previous definition
49 | #define EREMOTE 66 /* Object is remote */
|
arch/parisc/include/uapi/asm/errno.h:43: warning: "EOVERFLOW" redefined
43 | #define EOVERFLOW 72 /* Value too large for defined data type */
|
include/uapi/asm-generic/errno.h:58: note: this is the location of the previous definition
58 | #define EOVERFLOW 75 /* Value too large for defined data type */
|
arch/parisc/include/uapi/asm/errno.h:47: warning: "EBADE" redefined
47 | #define EBADE 160 /* Invalid exchange */
|
include/uapi/asm-generic/errno.h:33: note: this is the location of the previous definition
33 | #define EBADE 52 /* Invalid exchange */
|
arch/parisc/include/uapi/asm/errno.h:48: warning: "EBADR" redefined
48 | #define EBADR 161 /* Invalid request descriptor */
|
include/uapi/asm-generic/errno.h:34: note: this is the location of the previous definition
34 | #define EBADR 53 /* Invalid request descriptor */
|
arch/parisc/include/uapi/asm/errno.h:49: warning: "EXFULL" redefined
49 | #define EXFULL 162 /* Exchange full */
|
include/uapi/asm-generic/errno.h:35: note: this is the location of the previous definition
35 | #define EXFULL 54 /* Exchange full */
|
arch/parisc/include/uapi/asm/errno.h:50: warning: "ENOANO" redefined
50 | #define ENOANO 163 /* No anode */
|
include/uapi/asm-generic/errno.h:36: note: this is the location of the previous definition
36 | #define ENOANO 55 /* No anode */
vim +/ENOMSG +7 arch/parisc/include/uapi/asm/errno.h
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 6
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @7 #define ENOMSG 35 /* No message of desired type */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @8 #define EIDRM 36 /* Identifier removed */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @9 #define ECHRNG 37 /* Channel number out of range */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @10 #define EL2NSYNC 38 /* Level 2 not synchronized */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @11 #define EL3HLT 39 /* Level 3 halted */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @12 #define EL3RST 40 /* Level 3 reset */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @13 #define ELNRNG 41 /* Link number out of range */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @14 #define EUNATCH 42 /* Protocol driver not attached */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @15 #define ENOCSI 43 /* No CSI structure available */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @16 #define EL2HLT 44 /* Level 2 halted */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @17 #define EDEADLK 45 /* Resource deadlock would occur */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 18 #define EDEADLOCK EDEADLK
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @19 #define ENOLCK 46 /* No record locks available */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @20 #define EILSEQ 47 /* Illegal byte sequence */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 21
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @22 #define ENONET 50 /* Machine is not on the network */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @23 #define ENODATA 51 /* No data available */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @24 #define ETIME 52 /* Timer expired */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @25 #define ENOSR 53 /* Out of streams resources */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @26 #define ENOSTR 54 /* Device not a stream */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @27 #define ENOPKG 55 /* Package not installed */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 28
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @29 #define ENOLINK 57 /* Link has been severed */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @30 #define EADV 58 /* Advertise error */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @31 #define ESRMNT 59 /* Srmount error */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @32 #define ECOMM 60 /* Communication error on send */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @33 #define EPROTO 61 /* Protocol error */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 34
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @35 #define EMULTIHOP 64 /* Multihop attempted */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 36
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @37 #define EDOTDOT 66 /* RFS specific error */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @38 #define EBADMSG 67 /* Not a data message */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @39 #define EUSERS 68 /* Too many users */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @40 #define EDQUOT 69 /* Quota exceeded */
0ca43435188b9f arch/parisc/include/uapi/asm/errno.h Eric Sandeen 2013-11-12 @41 #define ESTALE 70 /* Stale file handle */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @42 #define EREMOTE 71 /* Object is remote */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @43 #define EOVERFLOW 72 /* Value too large for defined data type */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 44
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 45 /* these errnos are defined by Linux but not HPUX. */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 46
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @47 #define EBADE 160 /* Invalid exchange */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @48 #define EBADR 161 /* Invalid request descriptor */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @49 #define EXFULL 162 /* Exchange full */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @50 #define ENOANO 163 /* No anode */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @51 #define EBADRQC 164 /* Invalid request code */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @52 #define EBADSLT 165 /* Invalid slot */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @53 #define EBFONT 166 /* Bad font file format */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @54 #define ENOTUNIQ 167 /* Name not unique on network */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @55 #define EBADFD 168 /* File descriptor in bad state */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @56 #define EREMCHG 169 /* Remote address changed */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @57 #define ELIBACC 170 /* Can not access a needed shared library */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @58 #define ELIBBAD 171 /* Accessing a corrupted shared library */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @59 #define ELIBSCN 172 /* .lib section in a.out corrupted */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @60 #define ELIBMAX 173 /* Attempting to link in too many shared libraries */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @61 #define ELIBEXEC 174 /* Cannot exec a shared library directly */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @62 #define ERESTART 175 /* Interrupted system call should be restarted */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @63 #define ESTRPIPE 176 /* Streams pipe error */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @64 #define EUCLEAN 177 /* Structure needs cleaning */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @65 #define ENOTNAM 178 /* Not a XENIX named type file */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @66 #define ENAVAIL 179 /* No XENIX semaphores available */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @67 #define EISNAM 180 /* Is a named type file */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @68 #define EREMOTEIO 181 /* Remote I/O error */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @69 #define ENOMEDIUM 182 /* No medium found */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @70 #define EMEDIUMTYPE 183 /* Wrong medium type */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @71 #define ENOKEY 184 /* Required key not available */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @72 #define EKEYEXPIRED 185 /* Key has expired */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @73 #define EKEYREVOKED 186 /* Key has been revoked */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @74 #define EKEYREJECTED 187 /* Key was rejected by service */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 75
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 76 /* We now return you to your regularly scheduled HPUX. */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 77
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 78 #define ENOSYM 215 /* symbol does not exist in executable */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @79 #define ENOTSOCK 216 /* Socket operation on non-socket */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @80 #define EDESTADDRREQ 217 /* Destination address required */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @81 #define EMSGSIZE 218 /* Message too long */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @82 #define EPROTOTYPE 219 /* Protocol wrong type for socket */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @83 #define ENOPROTOOPT 220 /* Protocol not available */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @84 #define EPROTONOSUPPORT 221 /* Protocol not supported */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @85 #define ESOCKTNOSUPPORT 222 /* Socket type not supported */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @86 #define EOPNOTSUPP 223 /* Operation not supported on transport endpoint */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @87 #define EPFNOSUPPORT 224 /* Protocol family not supported */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @88 #define EAFNOSUPPORT 225 /* Address family not supported by protocol */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @89 #define EADDRINUSE 226 /* Address already in use */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @90 #define EADDRNOTAVAIL 227 /* Cannot assign requested address */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @91 #define ENETDOWN 228 /* Network is down */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @92 #define ENETUNREACH 229 /* Network is unreachable */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @93 #define ENETRESET 230 /* Network dropped connection because of reset */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @94 #define ECONNABORTED 231 /* Software caused connection abort */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @95 #define ECONNRESET 232 /* Connection reset by peer */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @96 #define ENOBUFS 233 /* No buffer space available */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @97 #define EISCONN 234 /* Transport endpoint is already connected */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @98 #define ENOTCONN 235 /* Transport endpoint is not connected */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @99 #define ESHUTDOWN 236 /* Cannot send after transport endpoint shutdown */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @100 #define ETOOMANYREFS 237 /* Too many references: cannot splice */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @101 #define ETIMEDOUT 238 /* Connection timed out */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @102 #define ECONNREFUSED 239 /* Connection refused */
3eb53b20d7bd13 arch/parisc/include/uapi/asm/errno.h Helge Deller 2016-08-20 103 #define EREFUSED ECONNREFUSED /* for HP's NFS apparently */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 104 #define EREMOTERELEASE 240 /* Remote peer released connection */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @105 #define EHOSTDOWN 241 /* Host is down */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @106 #define EHOSTUNREACH 242 /* No route to host */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 107
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @108 #define EALREADY 244 /* Operation already in progress */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @109 #define EINPROGRESS 245 /* Operation now in progress */
f5a408d53edef3 arch/parisc/include/uapi/asm/errno.h Guy Martin 2014-01-16 110 #define EWOULDBLOCK EAGAIN /* Operation would block (Not HPUX compliant) */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @111 #define ENOTEMPTY 247 /* Directory not empty */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @112 #define ENAMETOOLONG 248 /* File name too long */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @113 #define ELOOP 249 /* Too many symbolic links encountered */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 @114 #define ENOSYS 251 /* Function not implemented */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 115
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 116 #define ECANCELLED 253 /* aio request was canceled before complete (POSIX.4 / HPUX) */
05aa10de701409 include/asm-parisc/errno.h Grant Grundler 2005-10-21 @117 #define ECANCELED ECANCELLED /* SuSv3 and Solaris wants one 'L' */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 118
4750e2c0c59e0c include/asm-parisc/errno.h Joe Korty 2005-05-01 119 /* for robust mutexes */
4750e2c0c59e0c include/asm-parisc/errno.h Joe Korty 2005-05-01 @120 #define EOWNERDEAD 254 /* Owner died */
4750e2c0c59e0c include/asm-parisc/errno.h Joe Korty 2005-05-01 @121 #define ENOTRECOVERABLE 255 /* State not recoverable */
4750e2c0c59e0c include/asm-parisc/errno.h Joe Korty 2005-05-01 122
7d217d7ffc3433 arch/parisc/include/asm/errno.h Alexander Beregalov 2009-06-07 @123 #define ERFKILL 256 /* Operation not possible due to RF-kill */
^1da177e4c3f41 include/asm-parisc/errno.h Linus Torvalds 2005-04-16 124
69ebb83e13e514 arch/parisc/include/asm/errno.h Huang Ying 2011-01-30 @125 #define EHWPOISON 257 /* Memory page has hardware error */
69ebb83e13e514 arch/parisc/include/asm/errno.h Huang Ying 2011-01-30 126
--
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/2] virtio-rng: implement entropy leak feature
[not found] ` <20230119184349.74072-2-bchalios@amazon.es>
2023-01-19 20:17 ` [PATCH 1/2] virtio-rng: implement entropy leak feature kernel test robot
@ 2023-01-20 1:24 ` kernel test robot
2023-01-20 12:32 ` Michael S. Tsirkin
2 siblings, 0 replies; 3+ messages in thread
From: kernel test robot @ 2023-01-20 1:24 UTC (permalink / raw)
To: Babis Chalios, Olivia Mackall, Herbert Xu, Michael S. Tsirkin,
Jason Wang, linux-crypto, linux-kernel, virtualization
Cc: xmarcalx, Jason, amit, graf, oe-kbuild-all
Hi Babis,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.2-rc4 next-20230119]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Babis-Chalios/virtio-rng-implement-entropy-leak-feature/20230120-024631
patch link: https://lore.kernel.org/r/20230119184349.74072-2-bchalios%40amazon.es
patch subject: [PATCH 1/2] virtio-rng: implement entropy leak feature
config: x86_64-randconfig-s021 (https://download.01.org/0day-ci/archive/20230120/202301200941.fE9QkyE3-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://github.com/intel-lab-lkp/linux/commit/686114cbba5005584d458ad44164b4a4b88135f5
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Babis-Chalios/virtio-rng-implement-entropy-leak-feature/20230120-024631
git checkout 686114cbba5005584d458ad44164b4a4b88135f5
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 olddefconfig
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/char/hw_random/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/char/hw_random/virtio-rng.c:59:5: sparse: sparse: symbol 'add_fill_on_leak_request' was not declared. Should it be static?
>> drivers/char/hw_random/virtio-rng.c:73:5: sparse: sparse: symbol 'virtrng_fill_on_leak' was not declared. Should it be static?
>> drivers/char/hw_random/virtio-rng.c:94:5: sparse: sparse: symbol 'add_copy_on_leak_request' was not declared. Should it be static?
>> drivers/char/hw_random/virtio-rng.c:113:5: sparse: sparse: symbol 'virtrng_copy_on_leak' was not declared. Should it be static?
--
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/2] virtio-rng: implement entropy leak feature
[not found] ` <20230119184349.74072-2-bchalios@amazon.es>
2023-01-19 20:17 ` [PATCH 1/2] virtio-rng: implement entropy leak feature kernel test robot
2023-01-20 1:24 ` kernel test robot
@ 2023-01-20 12:32 ` Michael S. Tsirkin
2 siblings, 0 replies; 3+ messages in thread
From: Michael S. Tsirkin @ 2023-01-20 12:32 UTC (permalink / raw)
To: Babis Chalios
Cc: Jason, graf, Herbert Xu, amit, xmarcalx, linux-kernel,
virtualization, linux-crypto, Olivia Mackall
On Thu, Jan 19, 2023 at 07:43:47PM +0100, Babis Chalios wrote:
> Implement the virtio-rng feature that allows a guest driver to request
> from the device to perform certain operations in the event of an
> "entropy leak", such as when taking a VM snapshot or restoring a VM from
> a snapshot. The guest can request one of two operations: (i) fill a
> buffer with random bytes, or (ii) perform a memory copy between two
> bytes.
>
> The feature is similar to Microsoft's Virtual Machine Generation ID and
> it can be used to (1) avoid the race-condition that exists in our
> current VMGENID implementation, between the time vcpus are resumed and
> the ACPI notification is being handled and (2) provide mechanisms for
> notifying user-space about snapshot-related events.
>
> This commit implements the protocol between guest and device.
> Additionally, it makes sure there is always a request for random bytes
> in the event of entropy leak in-flight. Once such an event is observed,
> the driver feeds these bytes to as entropy using
> `add_device_randomness`.
>
> Keep in mind that this commit does not solve the race-condition issue,
> it adds fresh entropy whenever the driver handles the used buffer from
> the fill-on-leak request. In order to close the race window, we need to
> expose some API so that other kernel subsystems can request directly
> notifications from the device.
>
> Signed-off-by: Babis Chalios <bchalios@amazon.es>
> ---
> drivers/char/hw_random/virtio-rng.c | 200 +++++++++++++++++++++++++++-
> include/uapi/linux/virtio_rng.h | 3 +
> 2 files changed, 197 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
> index a6f3a8a2aca6..389a091a8801 100644
> --- a/drivers/char/hw_random/virtio-rng.c
> +++ b/drivers/char/hw_random/virtio-rng.c
> @@ -4,12 +4,14 @@
> * Copyright (C) 2007, 2008 Rusty Russell IBM Corporation
> */
>
> +#include "asm-generic/errno.h"
Why are you pulling this in?
If you really need errno the thing to include
is linux/errno.h
checkpatch has a rule to catch such cases:
# warn if <asm/foo.h> is #included and <linux/foo.h> is available and includes
# itself <asm/foo.h> (uses RAW line)
did you run checkpatch?
> #include <linux/err.h>
> #include <linux/hw_random.h>
> #include <linux/scatterlist.h>
> #include <linux/spinlock.h>
> #include <linux/virtio.h>
> #include <linux/virtio_rng.h>
> +#include <linux/random.h>
> #include <linux/module.h>
> #include <linux/slab.h>
>
> @@ -18,6 +20,12 @@ static DEFINE_IDA(rng_index_ida);
> struct virtrng_info {
> struct hwrng hwrng;
> struct virtqueue *vq;
> + /* Leak queues */
> + bool has_leakqs;
> + struct virtqueue *leakq[2];
> + spinlock_t lock;
> + int active_leakq;
> +
> char name[25];
> int index;
> bool hwrng_register_done;
> @@ -29,27 +37,159 @@ struct virtrng_info {
> /* minimal size returned by rng_buffer_size() */
> #if SMP_CACHE_BYTES < 32
> u8 data[32];
> + u8 leak_data[32];
> #else
> u8 data[SMP_CACHE_BYTES];
> + u8 leak_data[SMP_CACHE_BYTES];
> #endif
> };
>
> +/* Swaps the queues and returns the new active leak queue. */
> +static struct virtqueue *swap_leakqs(struct virtrng_info *vi)
> +{
> + vi->active_leakq = 1 - vi->active_leakq;
> + return vi->leakq[vi->active_leakq];
> +}
> +
> +static struct virtqueue *get_active_leakq(struct virtrng_info *vi)
> +{
> + return vi->leakq[vi->active_leakq];
> +}
> +
> +int add_fill_on_leak_request(struct virtrng_info *vi, struct virtqueue *vq, void *data, size_t len)
> +{
> + struct scatterlist sg;
> + int ret;
> +
> + sg_init_one(&sg, data, len);
> + ret = virtqueue_add_inbuf(vq, &sg, 1, data, GFP_KERNEL);
> + if (ret)
> + goto err;
> +
> +err:
> + return ret;
> +}
> +
> +int virtrng_fill_on_leak(struct virtrng_info *vi, void *data, size_t len)
> +{
> + struct virtqueue *vq;
> + unsigned long flags;
> + int ret;
> +
> + if (!vi->has_leakqs)
> + return -EOPNOTSUPP;
> +
> + spin_lock_irqsave(&vi->lock, flags);
> +
> + vq = get_active_leakq(vi);
> + ret = add_fill_on_leak_request(vi, vq, data, len);
> + if (ret)
> + virtqueue_kick(vq);
> +
> + spin_unlock_irqrestore(&vi->lock, flags);
> +
> + return ret;
> +}
> +
> +int add_copy_on_leak_request(struct virtrng_info *vi, struct virtqueue *vq,
> + void *to, void *from, size_t len)
> +{
> + int ret;
> + struct scatterlist out, in, *sgs[2];
> +
> + sg_init_one(&out, from, len);
> + sgs[0] = &out;
> + sg_init_one(&in, to, len);
> + sgs[1] = ∈
> +
> + ret = virtqueue_add_sgs(vq, sgs, 1, 1, to, GFP_KERNEL);
> + if (ret)
> + goto err;
> +
> +err:
> + return ret;
> +}
> +
> +int virtrng_copy_on_leak(struct virtrng_info *vi, void *to, void *from, size_t len)
> +{
> + struct virtqueue *vq;
> + unsigned long flags;
> + int ret;
> +
> + if (!vi->has_leakqs)
> + return -EOPNOTSUPP;
> +
> + spin_lock_irqsave(&vi->lock, flags);
> +
> + vq = get_active_leakq(vi);
> + ret = add_copy_on_leak_request(vi, vq, to, from, len);
> + if (ret)
> + virtqueue_kick(vq);
> +
> + spin_unlock_irqrestore(&vi->lock, flags);
> +
> + return ret;
> +}
> +
> +static void entropy_leak_detected(struct virtqueue *vq)
> +{
> + struct virtrng_info *vi = vq->vdev->priv;
> + struct virtqueue *activeq;
> + unsigned int len;
> + unsigned long flags;
> + void *buffer;
> + bool kick_activeq = false;
> +
> + spin_lock_irqsave(&vi->lock, flags);
> +
> + activeq = get_active_leakq(vi);
> + /* Drain all the used buffers from the queue */
> + while ((buffer = virtqueue_get_buf(vq, &len)) != NULL) {
> + if (vq == activeq) {
> + pr_debug("%s: entropy leak detected!", vi->name);
> + activeq = swap_leakqs(vi);
> + }
> +
> + if (buffer == vi->leak_data) {
> + add_device_randomness(vi->leak_data, sizeof(vi->leak_data));
> +
> + /* Ensure we always have a pending request for random bytes on entropy
> + * leak. Do it here, after we have swapped leak queues, so it gets handled
> + * with the next entropy leak event.
> + */
> + add_fill_on_leak_request(vi, activeq, vi->leak_data, sizeof(vi->leak_data));
> + kick_activeq = true;
> + }
> + }
> +
> + if (kick_activeq)
> + virtqueue_kick(activeq);
> +
> + spin_unlock_irqrestore(&vi->lock, flags);
> +}
> +
> static void random_recv_done(struct virtqueue *vq)
> {
> struct virtrng_info *vi = vq->vdev->priv;
> + unsigned long flags;
>
> + spin_lock_irqsave(&vi->lock, flags);
> /* We can get spurious callbacks, e.g. shared IRQs + virtio_pci. */
> if (!virtqueue_get_buf(vi->vq, &vi->data_avail))
> - return;
> + goto unlock;
>
> vi->data_idx = 0;
>
> complete(&vi->have_data);
> +
> +unlock:
> + spin_unlock_irqrestore(&vi->lock, flags);
> }
>
> static void request_entropy(struct virtrng_info *vi)
> {
> struct scatterlist sg;
> + unsigned long flags;
>
> reinit_completion(&vi->have_data);
> vi->data_avail = 0;
> @@ -57,10 +197,12 @@ static void request_entropy(struct virtrng_info *vi)
>
> sg_init_one(&sg, vi->data, sizeof(vi->data));
>
> + spin_lock_irqsave(&vi->lock, flags);
> /* There should always be room for one buffer. */
> virtqueue_add_inbuf(vi->vq, &sg, 1, vi->data, GFP_KERNEL);
>
> virtqueue_kick(vi->vq);
> + spin_unlock_irqrestore(&vi->lock, flags);
> }
>
> static unsigned int copy_data(struct virtrng_info *vi, void *buf,
> @@ -126,6 +268,40 @@ static void virtio_cleanup(struct hwrng *rng)
> complete(&vi->have_data);
> }
>
> +static int init_virtqueues(struct virtrng_info *vi, struct virtio_device *vdev)
> +{
> + int ret = -ENOMEM, total_vqs = 1;
> + struct virtqueue *vqs[3];
> + const char *names[3];
> + vq_callback_t *callbacks[3];
> +
> + if (vi->has_leakqs)
> + total_vqs = 3;
> +
> + callbacks[0] = random_recv_done;
> + names[0] = "input";
> + if (vi->has_leakqs) {
> + callbacks[1] = entropy_leak_detected;
> + names[1] = "leakq.1";
> + callbacks[2] = entropy_leak_detected;
> + names[2] = "leakq.2";
> + }
> +
> + ret = virtio_find_vqs(vdev, total_vqs, vqs, callbacks, names, NULL);
> + if (ret)
> + goto err;
> +
> + vi->vq = vqs[0];
> +
> + if (vi->has_leakqs) {
> + vi->leakq[0] = vqs[1];
> + vi->leakq[1] = vqs[2];
> + }
> +
> +err:
> + return ret;
> +}
> +
> static int probe_common(struct virtio_device *vdev)
> {
> int err, index;
> @@ -152,18 +328,24 @@ static int probe_common(struct virtio_device *vdev)
> };
> vdev->priv = vi;
>
> - /* We expect a single virtqueue. */
> - vi->vq = virtio_find_single_vq(vdev, random_recv_done, "input");
> - if (IS_ERR(vi->vq)) {
> - err = PTR_ERR(vi->vq);
> - goto err_find;
> + vi->has_leakqs = virtio_has_feature(vdev, VIRTIO_RNG_F_LEAK);
> + if (vi->has_leakqs) {
> + spin_lock_init(&vi->lock);
> + vi->active_leakq = 0;
> }
>
> + err = init_virtqueues(vi, vdev);
> + if (err)
> + goto err_find;
> +
> virtio_device_ready(vdev);
>
> /* we always have a pending entropy request */
> request_entropy(vi);
>
> + /* we always have a fill_on_leak request pending */
> + virtrng_fill_on_leak(vi, vi->leak_data, sizeof(vi->leak_data));
> +
> return 0;
>
> err_find:
> @@ -246,7 +428,13 @@ static const struct virtio_device_id id_table[] = {
> { 0 },
> };
>
> +static unsigned int features[] = {
> + VIRTIO_RNG_F_LEAK,
> +};
> +
> static struct virtio_driver virtio_rng_driver = {
> + .feature_table = features,
> + .feature_table_size = ARRAY_SIZE(features),
> .driver.name = KBUILD_MODNAME,
> .driver.owner = THIS_MODULE,
> .id_table = id_table,
> diff --git a/include/uapi/linux/virtio_rng.h b/include/uapi/linux/virtio_rng.h
> index c4d5de896f0c..d9774951547e 100644
> --- a/include/uapi/linux/virtio_rng.h
> +++ b/include/uapi/linux/virtio_rng.h
> @@ -5,4 +5,7 @@
> #include <linux/virtio_ids.h>
> #include <linux/virtio_config.h>
>
> +/* The feature bitmap for virtio entropy device */
> +#define VIRTIO_RNG_F_LEAK 0
> +
> #endif /* _LINUX_VIRTIO_RNG_H */
> --
> 2.38.1
>
> Amazon Spain Services sociedad limitada unipersonal, Calle Ramirez de Prado 5, 28045 Madrid. Registro Mercantil de Madrid . Tomo 22458 . Folio 102 . Hoja M-401234 . CIF B84570936
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^ permalink raw reply [flat|nested] 3+ messages in thread
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Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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[not found] <20230119184349.74072-1-bchalios@amazon.es>
[not found] ` <20230119184349.74072-2-bchalios@amazon.es>
2023-01-19 20:17 ` [PATCH 1/2] virtio-rng: implement entropy leak feature kernel test robot
2023-01-20 1:24 ` kernel test robot
2023-01-20 12:32 ` Michael S. Tsirkin
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