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Fix malloc/free in nfs_kv_read/write
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Vitaliy Filippov 2024-03-11 02:16:39 +03:00
parent e2f59c3885
commit e58554c298
2 changed files with 24 additions and 3 deletions
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13
src/nfs_kv_read.cpp
View File

@ -40,6 +40,7 @@ static void nfs_kv_continue_read(nfs_kv_read_state *st, int state)
fprintf(stderr, "BUG: invalid state in nfs_kv_continue_read()");
abort();
}
resume_0:
if (st->offset + sizeof(shared_file_header_t) < st->self->parent->kvfs->shared_inode_threshold)
{
kv_read_inode(st->self, st->ino, [st](int res, const std::string & value, json11::Json attrs)
@ -86,6 +87,7 @@ resume_1:
read_size = st->ientry["size"].uint64_value();
}
read_size += sizeof(shared_file_header_t);
assert(!st->aligned_buf);
st->aligned_buf = (uint8_t*)malloc_or_die(read_size);
st->buf = st->aligned_buf + sizeof(shared_file_header_t) + st->offset;
st->op->iov.push_back(st->aligned_buf, read_size);
@ -107,6 +109,8 @@ resume_1:
resume_2:
if (st->res < 0)
{
free(st->aligned_buf);
st->aligned_buf = NULL;
auto cb = std::move(st->cb);
cb(st->res);
return;
@ -118,8 +122,7 @@ resume_2:
free(st->aligned_buf);
st->aligned_buf = NULL;
st->allow_cache = false;
nfs_kv_continue_read(st, 0);
return;
goto resume_0;
}
auto cb = std::move(st->cb);
cb(0);
@ -128,6 +131,7 @@ resume_2:
}
st->aligned_offset = align_down(st->offset);
st->aligned_size = align_up(st->offset+st->size) - st->aligned_offset;
assert(!st->aligned_buf);
st->aligned_buf = (uint8_t*)malloc_or_die(st->aligned_size);
st->buf = st->aligned_buf + st->offset - st->aligned_offset;
st->op = new cluster_op_t;
@ -145,6 +149,11 @@ resume_2:
st->self->parent->cli->execute(st->op);
return;
resume_3:
if (st->res < 0)
{
free(st->aligned_buf);
st->aligned_buf = NULL;
}
auto cb = std::move(st->cb);
cb(st->res < 0 ? st->res : 0);
return;

14
src/nfs_kv_write.cpp
View File

@ -305,7 +305,7 @@ static void nfs_do_shared_read(nfs_kv_write_state *st, int state)
op->len = pre+sizeof(shared_file_header_t)+data_size+post;
op->callback = [st, state](cluster_op_t *op)
{
st->res = op->retval == op->len ? 0 : op->retval;
st->res = op->retval == op->len ? 0 : (op->retval > 0 ? -EIO : op->retval);
delete op;
if (st->shdr.magic != SHARED_FILE_MAGIC_V1 || st->shdr.inode != st->ino)
{
@ -316,7 +316,14 @@ static void nfs_do_shared_read(nfs_kv_write_state *st, int state)
nfs_kv_continue_write(st, 0);
}
else
{
if (st->res < 0)
{
free(st->aligned_buf);
st->aligned_buf = NULL;
}
nfs_kv_continue_write(st, state);
}
};
st->self->parent->cli->execute(op);
}
@ -871,6 +878,11 @@ resume_10:
nfs_do_unshare_write(st, 11);
return;
resume_11:
if (st->aligned_buf)
{
free(st->aligned_buf);
st->aligned_buf = NULL;
}
if (st->res < 0)
{
auto cb = std::move(st->cb);