Revision dec24b3b339487e58ce2da2875e9ee0316cc7e70 authored by Kees Cook on 20 June 2023, 19:42:38 UTC, committed by Paolo Abeni on 22 June 2023, 09:27:47 UTC
struct mux_adth actually ends with multiple struct mux_adth_dg members. This is seen both in the comments about the member: /** * struct mux_adth - Structure of the Aggregated Datagram Table Header. ... * @dg: datagramm table with variable length */ and in the preparation for populating it: adth_dg_size = offsetof(struct mux_adth, dg) + ul_adb->dg_count[i] * sizeof(*dg); ... adth_dg_size -= offsetof(struct mux_adth, dg); memcpy(&adth->dg, ul_adb->dg[i], adth_dg_size); This was reported as a run-time false positive warning: memcpy: detected field-spanning write (size 16) of single field "&adth->dg" at drivers/net/wwan/iosm/iosm_ipc_mux_codec.c:852 (size 8) Adjust the struct mux_adth definition and associated sizeof() math; no binary output differences are observed in the resulting object file. Reported-by: Florian Klink <flokli@flokli.de> Closes: https://lore.kernel.org/lkml/dbfa25f5-64c8-5574-4f5d-0151ba95d232@gmail.com/ Fixes: 1f52d7b62285 ("net: wwan: iosm: Enable M.2 7360 WWAN card support") Cc: M Chetan Kumar <m.chetan.kumar@intel.com> Cc: Bagas Sanjaya <bagasdotme@gmail.com> Cc: Intel Corporation <linuxwwan@intel.com> Cc: Loic Poulain <loic.poulain@linaro.org> Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20230620194234.never.023-kees@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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blk-mq-debugfs.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef INT_BLK_MQ_DEBUGFS_H
#define INT_BLK_MQ_DEBUGFS_H
#ifdef CONFIG_BLK_DEBUG_FS
#include <linux/seq_file.h>
struct blk_mq_hw_ctx;
struct blk_mq_debugfs_attr {
const char *name;
umode_t mode;
int (*show)(void *, struct seq_file *);
ssize_t (*write)(void *, const char __user *, size_t, loff_t *);
/* Set either .show or .seq_ops. */
const struct seq_operations *seq_ops;
};
int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);
void blk_mq_debugfs_register(struct request_queue *q);
void blk_mq_debugfs_register_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_register_hctxs(struct request_queue *q);
void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
void blk_mq_debugfs_register_sched(struct request_queue *q);
void blk_mq_debugfs_unregister_sched(struct request_queue *q);
void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_register_rqos(struct rq_qos *rqos);
void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);
#else
static inline void blk_mq_debugfs_register(struct request_queue *q)
{
}
static inline void blk_mq_debugfs_register_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx)
{
}
static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
{
}
static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q)
{
}
static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
{
}
static inline void blk_mq_debugfs_register_sched(struct request_queue *q)
{
}
static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
{
}
static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx)
{
}
static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
{
}
static inline void blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
{
}
static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
{
}
#endif
#ifdef CONFIG_BLK_DEBUG_FS_ZONED
int queue_zone_wlock_show(void *data, struct seq_file *m);
#else
static inline int queue_zone_wlock_show(void *data, struct seq_file *m)
{
return 0;
}
#endif
#endif
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