463934ca5d
[ Upstream commit 25dbc20deab5165f847b4eb42f376f725a986ee8 ]
The qedf_dbg_fp_int_cmd_read() function invokes sprintf() directly on a
__user pointer, which may crash the kernel.
Avoid doing that by vmalloc()'ating a buffer for scnprintf() and then
calling simple_read_from_buffer() which does a proper copy_to_user() call.
Fixes: 61d8658b4a
("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.")
Link: https://lore.kernel.org/lkml/20230724120241.40495-1-oleksandr@redhat.com/
Link: https://lore.kernel.org/linux-scsi/20230726101236.11922-1-skashyap@marvell.com/
Cc: Saurav Kashyap <skashyap@marvell.com>
Cc: Rob Evers <revers@redhat.com>
Cc: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Jozef Bacik <jobacik@redhat.com>
Cc: Laurence Oberman <loberman@redhat.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: GR-QLogic-Storage-Upstream@marvell.com
Cc: linux-scsi@vger.kernel.org
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Oleksandr Natalenko <oleksandr@redhat.com>
Link: https://lore.kernel.org/r/20230731084034.37021-4-oleksandr@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* QLogic FCoE Offload Driver
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* Copyright (c) 2016-2018 Cavium Inc.
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*/
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#ifndef _QEDF_DBG_H_
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#define _QEDF_DBG_H_
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/compiler.h>
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#include <linux/string.h>
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#include <linux/version.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <scsi/scsi_transport.h>
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#include <linux/fs.h>
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#include <linux/qed/common_hsi.h>
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#include <linux/qed/qed_if.h>
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extern uint qedf_debug;
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/* Debug print level definitions */
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#define QEDF_LOG_DEFAULT 0x1 /* Set default logging mask */
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#define QEDF_LOG_INFO 0x2 /*
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* Informational logs,
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* MAC address, WWPN, WWNN
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*/
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#define QEDF_LOG_DISC 0x4 /* Init, discovery, rport */
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#define QEDF_LOG_LL2 0x8 /* LL2, VLAN logs */
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#define QEDF_LOG_CONN 0x10 /* Connection setup, cleanup */
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#define QEDF_LOG_EVT 0x20 /* Events, link, mtu */
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#define QEDF_LOG_TIMER 0x40 /* Timer events */
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#define QEDF_LOG_MP_REQ 0x80 /* Middle Path (MP) logs */
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#define QEDF_LOG_SCSI_TM 0x100 /* SCSI Aborts, Task Mgmt */
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#define QEDF_LOG_UNSOL 0x200 /* unsolicited event logs */
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#define QEDF_LOG_IO 0x400 /* scsi cmd, completion */
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#define QEDF_LOG_MQ 0x800 /* Multi Queue logs */
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#define QEDF_LOG_BSG 0x1000 /* BSG logs */
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#define QEDF_LOG_DEBUGFS 0x2000 /* debugFS logs */
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#define QEDF_LOG_LPORT 0x4000 /* lport logs */
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#define QEDF_LOG_ELS 0x8000 /* ELS logs */
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#define QEDF_LOG_NPIV 0x10000 /* NPIV logs */
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#define QEDF_LOG_SESS 0x20000 /* Conection setup, cleanup */
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#define QEDF_LOG_TID 0x80000 /*
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* FW TID context acquire
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* free
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*/
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#define QEDF_TRACK_TID 0x100000 /*
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* Track TID state. To be
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* enabled only at module load
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* and not run-time.
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*/
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#define QEDF_TRACK_CMD_LIST 0x300000 /*
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* Track active cmd list nodes,
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* done with reference to TID,
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* hence TRACK_TID also enabled.
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*/
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#define QEDF_LOG_NOTICE 0x40000000 /* Notice logs */
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#define QEDF_LOG_WARN 0x80000000 /* Warning logs */
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#define QEDF_DEBUGFS_LOG_LEN (2 * PAGE_SIZE)
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/* Debug context structure */
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struct qedf_dbg_ctx {
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unsigned int host_no;
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struct pci_dev *pdev;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *bdf_dentry;
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#endif
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};
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#define QEDF_ERR(pdev, fmt, ...) \
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qedf_dbg_err(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
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#define QEDF_WARN(pdev, fmt, ...) \
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qedf_dbg_warn(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
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#define QEDF_NOTICE(pdev, fmt, ...) \
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qedf_dbg_notice(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
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#define QEDF_INFO(pdev, level, fmt, ...) \
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qedf_dbg_info(pdev, __func__, __LINE__, level, fmt, \
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## __VA_ARGS__)
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__printf(4, 5)
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void qedf_dbg_err(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
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const char *fmt, ...);
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__printf(4, 5)
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void qedf_dbg_warn(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
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const char *, ...);
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__printf(4, 5)
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void qedf_dbg_notice(struct qedf_dbg_ctx *qedf, const char *func,
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u32 line, const char *, ...);
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__printf(5, 6)
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void qedf_dbg_info(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
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u32 info, const char *fmt, ...);
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/* GRC Dump related defines */
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struct Scsi_Host;
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#define QEDF_UEVENT_CODE_GRCDUMP 0
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struct sysfs_bin_attrs {
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char *name;
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struct bin_attribute *attr;
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};
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extern int qedf_alloc_grc_dump_buf(uint8_t **buf, uint32_t len);
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extern void qedf_free_grc_dump_buf(uint8_t **buf);
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extern int qedf_get_grc_dump(struct qed_dev *cdev,
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const struct qed_common_ops *common, uint8_t **buf,
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uint32_t *grcsize);
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extern void qedf_uevent_emit(struct Scsi_Host *shost, u32 code, char *msg);
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extern int qedf_create_sysfs_attr(struct Scsi_Host *shost,
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struct sysfs_bin_attrs *iter);
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extern void qedf_remove_sysfs_attr(struct Scsi_Host *shost,
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struct sysfs_bin_attrs *iter);
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struct qedf_debugfs_ops {
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char *name;
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struct qedf_list_of_funcs *qedf_funcs;
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};
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extern const struct qedf_debugfs_ops qedf_debugfs_ops[];
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extern const struct file_operations qedf_dbg_fops[];
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#ifdef CONFIG_DEBUG_FS
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/* DebugFS related code */
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struct qedf_list_of_funcs {
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char *oper_str;
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ssize_t (*oper_func)(struct qedf_dbg_ctx *qedf);
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};
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#define qedf_dbg_fileops(drv, ops) \
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{ \
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.owner = THIS_MODULE, \
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.open = simple_open, \
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.read = drv##_dbg_##ops##_cmd_read, \
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.write = drv##_dbg_##ops##_cmd_write \
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}
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/* Used for debugfs sequential files */
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#define qedf_dbg_fileops_seq(drv, ops) \
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{ \
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.owner = THIS_MODULE, \
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.open = drv##_dbg_##ops##_open, \
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.read = seq_read, \
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.llseek = seq_lseek, \
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.release = single_release, \
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}
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extern void qedf_dbg_host_init(struct qedf_dbg_ctx *qedf,
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const struct qedf_debugfs_ops *dops,
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const struct file_operations *fops);
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extern void qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf);
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extern void qedf_dbg_init(char *drv_name);
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extern void qedf_dbg_exit(void);
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#endif /* CONFIG_DEBUG_FS */
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#endif /* _QEDF_DBG_H_ */
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