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libceph: handle OSD op ceph_pagelist_append() errors

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osd_req_op_cls_init() and osd_req_op_xattr_init() currently propagate
ceph_pagelist_alloc() ENOMEM errors but ignore ceph_pagelist_append()
memory allocation failures. Add these checks and cleanup on error.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
David Disseldorp 2019-07-03 17:59:20 +02:00 committed by Ilya Dryomov
parent 3e8730fac9
commit 4766815b11
1 changed files with 22 additions and 5 deletions
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27
net/ceph/osd_client.c
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@ -841,6 +841,7 @@ int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which,
struct ceph_pagelist *pagelist;
size_t payload_len = 0;
size_t size;
int ret;
op = _osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0);
@ -852,20 +853,27 @@ int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which,
size = strlen(class);
BUG_ON(size > (size_t) U8_MAX);
op->cls.class_len = size;
ceph_pagelist_append(pagelist, class, size);
ret = ceph_pagelist_append(pagelist, class, size);
if (ret)
goto err_pagelist_free;
payload_len += size;
op->cls.method_name = method;
size = strlen(method);
BUG_ON(size > (size_t) U8_MAX);
op->cls.method_len = size;
ceph_pagelist_append(pagelist, method, size);
ret = ceph_pagelist_append(pagelist, method, size);
if (ret)
goto err_pagelist_free;
payload_len += size;
osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist);
op->indata_len = payload_len;
return 0;
err_pagelist_free:
ceph_pagelist_release(pagelist);
return ret;
}
EXPORT_SYMBOL(osd_req_op_cls_init);
@ -877,6 +885,7 @@ int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
opcode, 0);
struct ceph_pagelist *pagelist;
size_t payload_len;
int ret;
BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR);
@ -886,10 +895,14 @@ int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
payload_len = strlen(name);
op->xattr.name_len = payload_len;
ceph_pagelist_append(pagelist, name, payload_len);
ret = ceph_pagelist_append(pagelist, name, payload_len);
if (ret)
goto err_pagelist_free;
op->xattr.value_len = size;
ceph_pagelist_append(pagelist, value, size);
ret = ceph_pagelist_append(pagelist, value, size);
if (ret)
goto err_pagelist_free;
payload_len += size;
op->xattr.cmp_op = cmp_op;
@ -898,6 +911,10 @@ int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist);
op->indata_len = payload_len;
return 0;
err_pagelist_free:
ceph_pagelist_release(pagelist);
return ret;
}
EXPORT_SYMBOL(osd_req_op_xattr_init);