CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org BCC: l...@intel.com CC: linux-ker...@vger.kernel.org TO: Hannes Reinecke <h...@suse.de>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git tls-upcall.v4 head: d2416ecdb6b03fc2e4aa40b20cdf919322713224 commit: ea4c6fc32e5e02a1e4c841f462c3a931b8838f33 [118/156] crypto,fs: Separate out hkdf_extract() and hkdf_expand() :::::: branch date: 4 days ago :::::: commit date: 6 days ago config: x86_64-randconfig-c007 (https://download.01.org/0day-ci/archive/20220314/202203141824.5kfxfqgd-...@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0467eb2cb7654c15ae366967ef35093c5724c416) 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://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git/commit/?id=ea4c6fc32e5e02a1e4c841f462c3a931b8838f33 git remote add hare-scsi-devel https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git git fetch --no-tags hare-scsi-devel tls-upcall.v4 git checkout ea4c6fc32e5e02a1e4c841f462c3a931b8838f33 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> clang-analyzer warnings: (new ones prefixed by >>) ^ include/linux/minmax.h:28:26: note: expanded from macro '__cmp' #define __cmp(x, y, op) ((x) op (y) ? (x) : (y)) ^ kernel/time/ntp.c:315:2: note: The value -500000000 is assigned to 'offset' offset = clamp(offset, -MAXPHASE, MAXPHASE); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/time/ntp.c:322:6: note: Assuming the condition is true if (unlikely(time_status & STA_FREQHOLD)) ^ include/linux/compiler.h:78:40: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^~~~ kernel/time/ntp.c:322:2: note: Taking false branch if (unlikely(time_status & STA_FREQHOLD)) ^ kernel/time/ntp.c:327:2: note: The value -500000000 is assigned to 'offset64' offset64 = offset; ^~~~~~~~~~~~~~~~~~~~ kernel/time/ntp.c:335:15: note: Assuming the condition is false if (unlikely(secs > 1 << (SHIFT_PLL + 1 + time_constant))) ^ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ kernel/time/ntp.c:335:2: note: Taking false branch if (unlikely(secs > 1 << (SHIFT_PLL + 1 + time_constant))) ^ kernel/time/ntp.c:341:16: note: Assuming '__UNIQUE_ID___x416' is >= '__UNIQUE_ID___y417' freq_adj = min(freq_adj + time_freq, MAXFREQ_SCALED); ^ include/linux/minmax.h:45:19: note: expanded from macro 'min' #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp' __cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:33:3: note: expanded from macro '__cmp_once' __cmp(unique_x, unique_y, op); }) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:28:26: note: expanded from macro '__cmp' #define __cmp(x, y, op) ((x) op (y) ? (x) : (y)) ^~~~~~~~~~ kernel/time/ntp.c:341:16: note: '?' condition is false freq_adj = min(freq_adj + time_freq, MAXFREQ_SCALED); ^ include/linux/minmax.h:45:19: note: expanded from macro 'min' #define min(x, y) __careful_cmp(x, y, <) ^ include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp' __cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op)) ^ include/linux/minmax.h:33:3: note: expanded from macro '__cmp_once' __cmp(unique_x, unique_y, op); }) ^ include/linux/minmax.h:28:26: note: expanded from macro '__cmp' #define __cmp(x, y, op) ((x) op (y) ? (x) : (y)) ^ kernel/time/ntp.c:343:16: note: '__UNIQUE_ID___x418' is > '__UNIQUE_ID___y419' time_freq = max(freq_adj, -MAXFREQ_SCALED); ^ include/linux/minmax.h:52:19: note: expanded from macro 'max' #define max(x, y) __careful_cmp(x, y, >) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp' __cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:33:3: note: expanded from macro '__cmp_once' __cmp(unique_x, unique_y, op); }) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:28:26: note: expanded from macro '__cmp' #define __cmp(x, y, op) ((x) op (y) ? (x) : (y)) ^~~ kernel/time/ntp.c:343:16: note: '?' condition is true time_freq = max(freq_adj, -MAXFREQ_SCALED); ^ include/linux/minmax.h:52:19: note: expanded from macro 'max' #define max(x, y) __careful_cmp(x, y, >) ^ include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp' __cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op)) ^ include/linux/minmax.h:33:3: note: expanded from macro '__cmp_once' __cmp(unique_x, unique_y, op); }) ^ include/linux/minmax.h:28:26: note: expanded from macro '__cmp' #define __cmp(x, y, op) ((x) op (y) ? (x) : (y)) ^ kernel/time/ntp.c:345:33: note: The result of the left shift is undefined because the left operand is negative time_offset = div_s64(offset64 << NTP_SCALE_SHIFT, NTP_INTERVAL_FREQ); ~~~~~~~~ ^ Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. >> crypto/hkdf.c:93:4: warning: Null pointer passed as 1st argument to memory >> copy function [clang-analyzer-unix.cstring.NullArg] memcpy(&okm[i], tmp, okmlen - i); ^ ~~~~~~~ crypto/hkdf.c:63:14: note: Assuming the condition is false if (WARN_ON(okmlen > 255 * hashlen)) ^ include/asm-generic/bug.h:121:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ crypto/hkdf.c:63:6: note: Taking false branch if (WARN_ON(okmlen > 255 * hashlen)) ^ include/asm-generic/bug.h:122:2: note: expanded from macro 'WARN_ON' if (unlikely(__ret_warn_on)) \ ^ crypto/hkdf.c:63:2: note: Taking false branch if (WARN_ON(okmlen > 255 * hashlen)) ^ crypto/hkdf.c:66:8: note: Calling 'kzalloc' tmp = kzalloc(hashlen, GFP_KERNEL); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:724:9: note: Calling 'kmalloc' return kmalloc(size, flags | __GFP_ZERO); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:578:2: note: Taking false branch if (__builtin_constant_p(size)) { ^ include/linux/slab.h:595:2: note: Returning pointer, which participates in a condition later return __kmalloc(size, flags); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:724:9: note: Returning from 'kmalloc' return kmalloc(size, flags | __GFP_ZERO); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:724:2: note: Returning pointer, which participates in a condition later return kmalloc(size, flags | __GFP_ZERO); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:66:8: note: Returning from 'kzalloc' tmp = kzalloc(hashlen, GFP_KERNEL); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:67:6: note: Assuming 'tmp' is non-null if (!tmp) ^~~~ crypto/hkdf.c:67:2: note: Taking false branch if (!tmp) ^ crypto/hkdf.c:72:14: note: Assuming 'i' is < 'okmlen' for (i = 0; i < okmlen; i += hashlen) { ^~~~~~~~~~ crypto/hkdf.c:72:2: note: Loop condition is true. Entering loop body for (i = 0; i < okmlen; i += hashlen) { ^ crypto/hkdf.c:74:9: note: Calling 'crypto_shash_init' err = crypto_shash_init(desc); ^~~~~~~~~~~~~~~~~~~~~~~ include/crypto/hash.h:946:6: note: Assuming the condition is false if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/crypto/hash.h:946:2: note: Taking false branch if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY) ^ include/crypto/hash.h:949:2: note: Returning value, which participates in a condition later return crypto_shash_alg(tfm)->init(desc); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:74:9: note: Returning from 'crypto_shash_init' err = crypto_shash_init(desc); ^~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:75:7: note: Assuming 'err' is 0 if (err) ^~~ crypto/hkdf.c:75:3: note: Taking false branch if (err) ^ crypto/hkdf.c:78:7: note: 'prev' is null if (prev) { ^~~~ crypto/hkdf.c:78:3: note: Taking false branch if (prev) { ^ crypto/hkdf.c:85:7: note: Assuming 'err' is 0 if (err) ^~~ crypto/hkdf.c:85:3: note: Taking false branch if (err) ^ crypto/hkdf.c:88:3: note: Taking false branch BUILD_BUG_ON(sizeof(counter) != 1); ^ include/linux/build_bug.h:50:2: note: expanded from macro 'BUILD_BUG_ON' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^ include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^ include/linux/compiler_types.h:335:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:323:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:315:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ -- ^ block/blk-mq.h:395:2: note: expanded from macro 'blk_mq_run_dispatch_ops' __blk_mq_run_dispatch_ops(q, true, dispatch_ops) \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ block/blk-mq.h:380:6: note: expanded from macro '__blk_mq_run_dispatch_ops' if (!blk_queue_has_srcu(q)) { \ ^~~~~~~~~~~~~~~~~~~~~~ block/blk-mq.c:2525:3: note: Taking true branch blk_mq_run_dispatch_ops(q, ^ block/blk-mq.h:395:2: note: expanded from macro 'blk_mq_run_dispatch_ops' __blk_mq_run_dispatch_ops(q, true, dispatch_ops) \ ^ block/blk-mq.h:380:2: note: expanded from macro '__blk_mq_run_dispatch_ops' if (!blk_queue_has_srcu(q)) { \ ^ block/blk-mq.c:2526:5: note: Calling 'blk_mq_plug_issue_direct' blk_mq_plug_issue_direct(plug, false)); ^ block/blk-mq.h:395:37: note: expanded from macro 'blk_mq_run_dispatch_ops' __blk_mq_run_dispatch_ops(q, true, dispatch_ops) \ ^~~~~~~~~~~~ block/blk-mq.h:382:4: note: expanded from macro '__blk_mq_run_dispatch_ops' (dispatch_ops); \ ^~~~~~~~~~~~ block/blk-mq.c:2471:2: note: 'hctx' initialized to a null pointer value struct blk_mq_hw_ctx *hctx = NULL; ^~~~~~~~~~~~~~~~~~~~~~~~~~ block/blk-mq.c:2476:15: note: Left side of '&&' is true while ((rq = rq_list_pop(&plug->mq_list))) { ^ include/linux/blkdev.h:1350:6: note: expanded from macro 'rq_list_pop' if ((listptr) && *(listptr)) { \ ^ block/blk-mq.c:2476:15: note: Taking true branch while ((rq = rq_list_pop(&plug->mq_list))) { ^ include/linux/blkdev.h:1350:2: note: expanded from macro 'rq_list_pop' if ((listptr) && *(listptr)) { \ ^ block/blk-mq.c:2476:2: note: Loop condition is true. Entering loop body while ((rq = rq_list_pop(&plug->mq_list))) { ^ block/blk-mq.c:2477:15: note: Assuming field 'mq_list' is equal to null bool last = rq_list_empty(plug->mq_list); ^ include/linux/blkdev.h:1369:30: note: expanded from macro 'rq_list_empty' #define rq_list_empty(list) ((list) == (struct request *) NULL) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ block/blk-mq.c:2480:7: note: Assuming 'hctx' is equal to field 'mq_hctx' if (hctx != rq->mq_hctx) { ^~~~~~~~~~~~~~~~~~~ block/blk-mq.c:2480:3: note: Taking false branch if (hctx != rq->mq_hctx) { ^ block/blk-mq.c:2487:3: note: Control jumps to the 'default' case at line 2496 switch (ret) { ^ block/blk-mq.c:2499:4: note: Execution continues on line 2476 break; ^ block/blk-mq.c:2476:15: note: Left side of '&&' is true while ((rq = rq_list_pop(&plug->mq_list))) { ^ include/linux/blkdev.h:1350:6: note: expanded from macro 'rq_list_pop' if ((listptr) && *(listptr)) { \ ^ block/blk-mq.c:2476:15: note: Taking false branch while ((rq = rq_list_pop(&plug->mq_list))) { ^ include/linux/blkdev.h:1350:2: note: expanded from macro 'rq_list_pop' if ((listptr) && *(listptr)) { \ ^ block/blk-mq.c:2476:2: note: Loop condition is false. Execution continues on line 2507 while ((rq = rq_list_pop(&plug->mq_list))) { ^ block/blk-mq.c:2507:6: note: 'errors' is 1 if (errors) ^~~~~~ block/blk-mq.c:2507:2: note: Taking true branch if (errors) ^ block/blk-mq.c:2508:21: note: Passing null pointer value via 1st parameter 'hctx' blk_mq_commit_rqs(hctx, &queued, from_schedule); ^~~~ block/blk-mq.c:2508:3: note: Calling 'blk_mq_commit_rqs' blk_mq_commit_rqs(hctx, &queued, from_schedule); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ block/blk-mq.c:2338:6: note: Access to field 'queue' results in a dereference of a null pointer (loaded from variable 'hctx') if (hctx->queue->mq_ops->commit_rqs) { ^~~~ Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. >> crypto/hkdf.c:93:4: warning: Null pointer passed as 1st argument to memory >> copy function [clang-analyzer-unix.cstring.NullArg] memcpy(&okm[i], tmp, okmlen - i); ^ ~~~~~~~ crypto/hkdf.c:63:14: note: Assuming the condition is false if (WARN_ON(okmlen > 255 * hashlen)) ^ include/asm-generic/bug.h:121:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ crypto/hkdf.c:63:6: note: Taking false branch if (WARN_ON(okmlen > 255 * hashlen)) ^ include/asm-generic/bug.h:122:2: note: expanded from macro 'WARN_ON' if (unlikely(__ret_warn_on)) \ ^ crypto/hkdf.c:63:2: note: Taking false branch if (WARN_ON(okmlen > 255 * hashlen)) ^ crypto/hkdf.c:66:8: note: Calling 'kzalloc' tmp = kzalloc(hashlen, GFP_KERNEL); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:724:9: note: Calling 'kmalloc' return kmalloc(size, flags | __GFP_ZERO); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:578:2: note: Taking false branch if (__builtin_constant_p(size)) { ^ include/linux/slab.h:595:2: note: Returning pointer, which participates in a condition later return __kmalloc(size, flags); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:724:9: note: Returning from 'kmalloc' return kmalloc(size, flags | __GFP_ZERO); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/slab.h:724:2: note: Returning pointer, which participates in a condition later return kmalloc(size, flags | __GFP_ZERO); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:66:8: note: Returning from 'kzalloc' tmp = kzalloc(hashlen, GFP_KERNEL); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:67:6: note: Assuming 'tmp' is non-null if (!tmp) ^~~~ crypto/hkdf.c:67:2: note: Taking false branch if (!tmp) ^ crypto/hkdf.c:72:14: note: Assuming 'i' is < 'okmlen' for (i = 0; i < okmlen; i += hashlen) { ^~~~~~~~~~ crypto/hkdf.c:72:2: note: Loop condition is true. Entering loop body for (i = 0; i < okmlen; i += hashlen) { ^ crypto/hkdf.c:74:9: note: Calling 'crypto_shash_init' err = crypto_shash_init(desc); ^~~~~~~~~~~~~~~~~~~~~~~ include/crypto/hash.h:946:6: note: Assuming the condition is false if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/crypto/hash.h:946:2: note: Taking false branch if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY) ^ include/crypto/hash.h:949:2: note: Returning value, which participates in a condition later return crypto_shash_alg(tfm)->init(desc); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:74:9: note: Returning from 'crypto_shash_init' err = crypto_shash_init(desc); ^~~~~~~~~~~~~~~~~~~~~~~ crypto/hkdf.c:75:7: note: Assuming 'err' is 0 if (err) ^~~ crypto/hkdf.c:75:3: note: Taking false branch if (err) ^ crypto/hkdf.c:78:7: note: 'prev' is null if (prev) { ^~~~ crypto/hkdf.c:78:3: note: Taking false branch if (prev) { ^ crypto/hkdf.c:85:7: note: Assuming 'err' is 0 if (err) ^~~ crypto/hkdf.c:85:3: note: Taking false branch if (err) ^ crypto/hkdf.c:88:3: note: Taking false branch BUILD_BUG_ON(sizeof(counter) != 1); ^ include/linux/build_bug.h:50:2: note: expanded from macro 'BUILD_BUG_ON' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^ include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^ include/linux/compiler_types.h:335:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:323:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:315:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ vim +93 crypto/hkdf.c ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 44 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 45 /* ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 46 * HKDF-Expand (RFC 5869 section 2.3). ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 47 * This expands the pseudorandom key, which was already keyed into @hmac_tfm, ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 48 * into @okmlen bytes of output keying material parameterized by the ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 49 * application-specific @info of length @infolen bytes. ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 50 * This is thread-safe and may be called by multiple threads in parallel. ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 51 */ ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 52 int hkdf_expand(struct crypto_shash *hmac_tfm, ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 53 const u8 *info, unsigned int infolen, ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 54 u8 *okm, unsigned int okmlen) ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 55 { ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 56 SHASH_DESC_ON_STACK(desc, hmac_tfm); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 57 unsigned int i, hashlen = crypto_shash_digestsize(hmac_tfm); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 58 int err; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 59 const u8 *prev = NULL; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 60 u8 counter = 1; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 61 u8 *tmp; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 62 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 63 if (WARN_ON(okmlen > 255 * hashlen)) ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 64 return -EINVAL; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 65 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 66 tmp = kzalloc(hashlen, GFP_KERNEL); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 67 if (!tmp) ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 68 return -ENOMEM; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 69 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 70 desc->tfm = hmac_tfm; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 71 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 72 for (i = 0; i < okmlen; i += hashlen) { ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 73 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 74 err = crypto_shash_init(desc); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 75 if (err) ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 76 goto out; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 77 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 78 if (prev) { ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 79 err = crypto_shash_update(desc, prev, hashlen); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 80 if (err) ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 81 goto out; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 82 } ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 83 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 84 err = crypto_shash_update(desc, info, infolen); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 85 if (err) ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 86 goto out; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 87 ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 88 BUILD_BUG_ON(sizeof(counter) != 1); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 89 if (okmlen - i < hashlen) { ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 90 err = crypto_shash_finup(desc, &counter, 1, tmp); ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 91 if (err) ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 92 goto out; ea4c6fc32e5e02a Hannes Reinecke 2022-01-10 @93 memcpy(&okm[i], tmp, okmlen - i); --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
