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linuxkm/lkcapi_sha_glue.c: in wc_get_random_bytes_user() and wc_extract_crng_user(), map -EINTR from rng_invalidation_pre_check() to -ERESTARTSYS, for proper SA_RESTART dynamics, matching in-tree get_random_bytes_user().

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This commit is contained in:
Daniel Pouzzner
2026-09-22 23:09:30 -05:00
parent 73015d25b0
commit 998ca1149e
1 changed files with 8 additions and 2 deletions
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10
linuxkm/lkcapi_sha_glue.c
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@@ -4272,7 +4272,10 @@ static ssize_t wc_get_random_bytes_user(struct iov_iter *iter) {
ret = rng_invalidation_pre_check(&current_default_wc_rng_bank->root_rng, iov_iter_count(iter));
if (ret != 0) {
(void)wc_rng_bank_default_checkin(&current_default_wc_rng_bank);
return ret;
if (ret == -WC_NO_ERR_TRACE(EINTR))
return -ERESTARTSYS; /* as at the end with no output -- SA_RESTART contract */
else
return ret;
}
#endif
@@ -4372,7 +4375,10 @@ static ssize_t wc_extract_crng_user(void __user *buf, size_t nbytes) {
ret = rng_invalidation_pre_check(&current_default_wc_rng_bank->root_rng, nbytes);
if (ret != 0) {
(void)wc_rng_bank_default_checkin(&current_default_wc_rng_bank);
return ret;
if (ret == -WC_NO_ERR_TRACE(EINTR))
return -ERESTARTSYS; /* as at the end with no output -- SA_RESTART contract */
else
return ret;
}
#endif