458 lines
12 KiB
C
458 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#include "xfs.h"
|
|
#include "xfs_shared.h"
|
|
#include "xfs_format.h"
|
|
#include "xfs_fs.h"
|
|
#include "xfs_log_format.h"
|
|
#include "xfs_trans_resv.h"
|
|
#include "xfs_mount.h"
|
|
#include "xfs_errortag.h"
|
|
#include "xfs_error.h"
|
|
#include "xfs_sysfs.h"
|
|
#include "xfs_inode.h"
|
|
|
|
#ifdef DEBUG
|
|
|
|
static unsigned int xfs_errortag_random_default[] = {
|
|
XFS_RANDOM_DEFAULT,
|
|
XFS_RANDOM_IFLUSH_1,
|
|
XFS_RANDOM_IFLUSH_2,
|
|
XFS_RANDOM_IFLUSH_3,
|
|
XFS_RANDOM_IFLUSH_4,
|
|
XFS_RANDOM_IFLUSH_5,
|
|
XFS_RANDOM_IFLUSH_6,
|
|
XFS_RANDOM_DA_READ_BUF,
|
|
XFS_RANDOM_BTREE_CHECK_LBLOCK,
|
|
XFS_RANDOM_BTREE_CHECK_SBLOCK,
|
|
XFS_RANDOM_ALLOC_READ_AGF,
|
|
XFS_RANDOM_IALLOC_READ_AGI,
|
|
XFS_RANDOM_ITOBP_INOTOBP,
|
|
XFS_RANDOM_IUNLINK,
|
|
XFS_RANDOM_IUNLINK_REMOVE,
|
|
XFS_RANDOM_DIR_INO_VALIDATE,
|
|
XFS_RANDOM_BULKSTAT_READ_CHUNK,
|
|
XFS_RANDOM_IODONE_IOERR,
|
|
XFS_RANDOM_STRATREAD_IOERR,
|
|
XFS_RANDOM_STRATCMPL_IOERR,
|
|
XFS_RANDOM_DIOWRITE_IOERR,
|
|
XFS_RANDOM_BMAPIFORMAT,
|
|
XFS_RANDOM_FREE_EXTENT,
|
|
XFS_RANDOM_RMAP_FINISH_ONE,
|
|
XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE,
|
|
XFS_RANDOM_REFCOUNT_FINISH_ONE,
|
|
XFS_RANDOM_BMAP_FINISH_ONE,
|
|
XFS_RANDOM_AG_RESV_CRITICAL,
|
|
XFS_RANDOM_DROP_WRITES,
|
|
XFS_RANDOM_LOG_BAD_CRC,
|
|
XFS_RANDOM_LOG_ITEM_PIN,
|
|
XFS_RANDOM_BUF_LRU_REF,
|
|
XFS_RANDOM_FORCE_SCRUB_REPAIR,
|
|
XFS_RANDOM_FORCE_SUMMARY_RECALC,
|
|
XFS_RANDOM_IUNLINK_FALLBACK,
|
|
XFS_RANDOM_BUF_IOERROR,
|
|
};
|
|
|
|
struct xfs_errortag_attr {
|
|
struct attribute attr;
|
|
unsigned int tag;
|
|
};
|
|
|
|
static inline struct xfs_errortag_attr *
|
|
to_attr(struct attribute *attr)
|
|
{
|
|
return container_of(attr, struct xfs_errortag_attr, attr);
|
|
}
|
|
|
|
static inline struct xfs_mount *
|
|
to_mp(struct kobject *kobject)
|
|
{
|
|
struct xfs_kobj *kobj = to_kobj(kobject);
|
|
|
|
return container_of(kobj, struct xfs_mount, m_errortag_kobj);
|
|
}
|
|
|
|
STATIC ssize_t
|
|
xfs_errortag_attr_store(
|
|
struct kobject *kobject,
|
|
struct attribute *attr,
|
|
const char *buf,
|
|
size_t count)
|
|
{
|
|
struct xfs_mount *mp = to_mp(kobject);
|
|
struct xfs_errortag_attr *xfs_attr = to_attr(attr);
|
|
int ret;
|
|
unsigned int val;
|
|
|
|
if (strcmp(buf, "default") == 0) {
|
|
val = xfs_errortag_random_default[xfs_attr->tag];
|
|
} else {
|
|
ret = kstrtouint(buf, 0, &val);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = xfs_errortag_set(mp, xfs_attr->tag, val);
|
|
if (ret)
|
|
return ret;
|
|
return count;
|
|
}
|
|
|
|
STATIC ssize_t
|
|
xfs_errortag_attr_show(
|
|
struct kobject *kobject,
|
|
struct attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct xfs_mount *mp = to_mp(kobject);
|
|
struct xfs_errortag_attr *xfs_attr = to_attr(attr);
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n",
|
|
xfs_errortag_get(mp, xfs_attr->tag));
|
|
}
|
|
|
|
static const struct sysfs_ops xfs_errortag_sysfs_ops = {
|
|
.show = xfs_errortag_attr_show,
|
|
.store = xfs_errortag_attr_store,
|
|
};
|
|
|
|
#define XFS_ERRORTAG_ATTR_RW(_name, _tag) \
|
|
static struct xfs_errortag_attr xfs_errortag_attr_##_name = { \
|
|
.attr = {.name = __stringify(_name), \
|
|
.mode = VERIFY_OCTAL_PERMISSIONS(S_IWUSR | S_IRUGO) }, \
|
|
.tag = (_tag), \
|
|
}
|
|
|
|
#define XFS_ERRORTAG_ATTR_LIST(_name) &xfs_errortag_attr_##_name.attr
|
|
|
|
XFS_ERRORTAG_ATTR_RW(noerror, XFS_ERRTAG_NOERROR);
|
|
XFS_ERRORTAG_ATTR_RW(iflush1, XFS_ERRTAG_IFLUSH_1);
|
|
XFS_ERRORTAG_ATTR_RW(iflush2, XFS_ERRTAG_IFLUSH_2);
|
|
XFS_ERRORTAG_ATTR_RW(iflush3, XFS_ERRTAG_IFLUSH_3);
|
|
XFS_ERRORTAG_ATTR_RW(iflush4, XFS_ERRTAG_IFLUSH_4);
|
|
XFS_ERRORTAG_ATTR_RW(iflush5, XFS_ERRTAG_IFLUSH_5);
|
|
XFS_ERRORTAG_ATTR_RW(iflush6, XFS_ERRTAG_IFLUSH_6);
|
|
XFS_ERRORTAG_ATTR_RW(dareadbuf, XFS_ERRTAG_DA_READ_BUF);
|
|
XFS_ERRORTAG_ATTR_RW(btree_chk_lblk, XFS_ERRTAG_BTREE_CHECK_LBLOCK);
|
|
XFS_ERRORTAG_ATTR_RW(btree_chk_sblk, XFS_ERRTAG_BTREE_CHECK_SBLOCK);
|
|
XFS_ERRORTAG_ATTR_RW(readagf, XFS_ERRTAG_ALLOC_READ_AGF);
|
|
XFS_ERRORTAG_ATTR_RW(readagi, XFS_ERRTAG_IALLOC_READ_AGI);
|
|
XFS_ERRORTAG_ATTR_RW(itobp, XFS_ERRTAG_ITOBP_INOTOBP);
|
|
XFS_ERRORTAG_ATTR_RW(iunlink, XFS_ERRTAG_IUNLINK);
|
|
XFS_ERRORTAG_ATTR_RW(iunlinkrm, XFS_ERRTAG_IUNLINK_REMOVE);
|
|
XFS_ERRORTAG_ATTR_RW(dirinovalid, XFS_ERRTAG_DIR_INO_VALIDATE);
|
|
XFS_ERRORTAG_ATTR_RW(bulkstat, XFS_ERRTAG_BULKSTAT_READ_CHUNK);
|
|
XFS_ERRORTAG_ATTR_RW(logiodone, XFS_ERRTAG_IODONE_IOERR);
|
|
XFS_ERRORTAG_ATTR_RW(stratread, XFS_ERRTAG_STRATREAD_IOERR);
|
|
XFS_ERRORTAG_ATTR_RW(stratcmpl, XFS_ERRTAG_STRATCMPL_IOERR);
|
|
XFS_ERRORTAG_ATTR_RW(diowrite, XFS_ERRTAG_DIOWRITE_IOERR);
|
|
XFS_ERRORTAG_ATTR_RW(bmapifmt, XFS_ERRTAG_BMAPIFORMAT);
|
|
XFS_ERRORTAG_ATTR_RW(free_extent, XFS_ERRTAG_FREE_EXTENT);
|
|
XFS_ERRORTAG_ATTR_RW(rmap_finish_one, XFS_ERRTAG_RMAP_FINISH_ONE);
|
|
XFS_ERRORTAG_ATTR_RW(refcount_continue_update, XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE);
|
|
XFS_ERRORTAG_ATTR_RW(refcount_finish_one, XFS_ERRTAG_REFCOUNT_FINISH_ONE);
|
|
XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE);
|
|
XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL);
|
|
XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES);
|
|
XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC);
|
|
XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN);
|
|
XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF);
|
|
XFS_ERRORTAG_ATTR_RW(force_repair, XFS_ERRTAG_FORCE_SCRUB_REPAIR);
|
|
XFS_ERRORTAG_ATTR_RW(bad_summary, XFS_ERRTAG_FORCE_SUMMARY_RECALC);
|
|
XFS_ERRORTAG_ATTR_RW(iunlink_fallback, XFS_ERRTAG_IUNLINK_FALLBACK);
|
|
XFS_ERRORTAG_ATTR_RW(buf_ioerror, XFS_ERRTAG_BUF_IOERROR);
|
|
|
|
static struct attribute *xfs_errortag_attrs[] = {
|
|
XFS_ERRORTAG_ATTR_LIST(noerror),
|
|
XFS_ERRORTAG_ATTR_LIST(iflush1),
|
|
XFS_ERRORTAG_ATTR_LIST(iflush2),
|
|
XFS_ERRORTAG_ATTR_LIST(iflush3),
|
|
XFS_ERRORTAG_ATTR_LIST(iflush4),
|
|
XFS_ERRORTAG_ATTR_LIST(iflush5),
|
|
XFS_ERRORTAG_ATTR_LIST(iflush6),
|
|
XFS_ERRORTAG_ATTR_LIST(dareadbuf),
|
|
XFS_ERRORTAG_ATTR_LIST(btree_chk_lblk),
|
|
XFS_ERRORTAG_ATTR_LIST(btree_chk_sblk),
|
|
XFS_ERRORTAG_ATTR_LIST(readagf),
|
|
XFS_ERRORTAG_ATTR_LIST(readagi),
|
|
XFS_ERRORTAG_ATTR_LIST(itobp),
|
|
XFS_ERRORTAG_ATTR_LIST(iunlink),
|
|
XFS_ERRORTAG_ATTR_LIST(iunlinkrm),
|
|
XFS_ERRORTAG_ATTR_LIST(dirinovalid),
|
|
XFS_ERRORTAG_ATTR_LIST(bulkstat),
|
|
XFS_ERRORTAG_ATTR_LIST(logiodone),
|
|
XFS_ERRORTAG_ATTR_LIST(stratread),
|
|
XFS_ERRORTAG_ATTR_LIST(stratcmpl),
|
|
XFS_ERRORTAG_ATTR_LIST(diowrite),
|
|
XFS_ERRORTAG_ATTR_LIST(bmapifmt),
|
|
XFS_ERRORTAG_ATTR_LIST(free_extent),
|
|
XFS_ERRORTAG_ATTR_LIST(rmap_finish_one),
|
|
XFS_ERRORTAG_ATTR_LIST(refcount_continue_update),
|
|
XFS_ERRORTAG_ATTR_LIST(refcount_finish_one),
|
|
XFS_ERRORTAG_ATTR_LIST(bmap_finish_one),
|
|
XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
|
|
XFS_ERRORTAG_ATTR_LIST(drop_writes),
|
|
XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
|
|
XFS_ERRORTAG_ATTR_LIST(log_item_pin),
|
|
XFS_ERRORTAG_ATTR_LIST(buf_lru_ref),
|
|
XFS_ERRORTAG_ATTR_LIST(force_repair),
|
|
XFS_ERRORTAG_ATTR_LIST(bad_summary),
|
|
XFS_ERRORTAG_ATTR_LIST(iunlink_fallback),
|
|
XFS_ERRORTAG_ATTR_LIST(buf_ioerror),
|
|
NULL,
|
|
};
|
|
|
|
static struct kobj_type xfs_errortag_ktype = {
|
|
.release = xfs_sysfs_release,
|
|
.sysfs_ops = &xfs_errortag_sysfs_ops,
|
|
.default_attrs = xfs_errortag_attrs,
|
|
};
|
|
|
|
int
|
|
xfs_errortag_init(
|
|
struct xfs_mount *mp)
|
|
{
|
|
mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX,
|
|
KM_MAYFAIL);
|
|
if (!mp->m_errortag)
|
|
return -ENOMEM;
|
|
|
|
return xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype,
|
|
&mp->m_kobj, "errortag");
|
|
}
|
|
|
|
void
|
|
xfs_errortag_del(
|
|
struct xfs_mount *mp)
|
|
{
|
|
xfs_sysfs_del(&mp->m_errortag_kobj);
|
|
kmem_free(mp->m_errortag);
|
|
}
|
|
|
|
bool
|
|
xfs_errortag_test(
|
|
struct xfs_mount *mp,
|
|
const char *expression,
|
|
const char *file,
|
|
int line,
|
|
unsigned int error_tag)
|
|
{
|
|
unsigned int randfactor;
|
|
|
|
/*
|
|
* To be able to use error injection anywhere, we need to ensure error
|
|
* injection mechanism is already initialized.
|
|
*
|
|
* Code paths like I/O completion can be called before the
|
|
* initialization is complete, but be able to inject errors in such
|
|
* places is still useful.
|
|
*/
|
|
if (!mp->m_errortag)
|
|
return false;
|
|
|
|
ASSERT(error_tag < XFS_ERRTAG_MAX);
|
|
randfactor = mp->m_errortag[error_tag];
|
|
if (!randfactor || prandom_u32() % randfactor)
|
|
return false;
|
|
|
|
xfs_warn_ratelimited(mp,
|
|
"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
|
|
expression, file, line, mp->m_super->s_id);
|
|
return true;
|
|
}
|
|
|
|
int
|
|
xfs_errortag_get(
|
|
struct xfs_mount *mp,
|
|
unsigned int error_tag)
|
|
{
|
|
if (error_tag >= XFS_ERRTAG_MAX)
|
|
return -EINVAL;
|
|
|
|
return mp->m_errortag[error_tag];
|
|
}
|
|
|
|
int
|
|
xfs_errortag_set(
|
|
struct xfs_mount *mp,
|
|
unsigned int error_tag,
|
|
unsigned int tag_value)
|
|
{
|
|
if (error_tag >= XFS_ERRTAG_MAX)
|
|
return -EINVAL;
|
|
|
|
mp->m_errortag[error_tag] = tag_value;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
xfs_errortag_add(
|
|
struct xfs_mount *mp,
|
|
unsigned int error_tag)
|
|
{
|
|
if (error_tag >= XFS_ERRTAG_MAX)
|
|
return -EINVAL;
|
|
|
|
return xfs_errortag_set(mp, error_tag,
|
|
xfs_errortag_random_default[error_tag]);
|
|
}
|
|
|
|
int
|
|
xfs_errortag_clearall(
|
|
struct xfs_mount *mp)
|
|
{
|
|
memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX);
|
|
return 0;
|
|
}
|
|
#endif /* DEBUG */
|
|
|
|
void
|
|
xfs_error_report(
|
|
const char *tag,
|
|
int level,
|
|
struct xfs_mount *mp,
|
|
const char *filename,
|
|
int linenum,
|
|
xfs_failaddr_t failaddr)
|
|
{
|
|
if (level <= xfs_error_level) {
|
|
xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
|
|
"Internal error %s at line %d of file %s. Caller %pS",
|
|
tag, linenum, filename, failaddr);
|
|
|
|
xfs_stack_trace();
|
|
}
|
|
}
|
|
|
|
void
|
|
xfs_corruption_error(
|
|
const char *tag,
|
|
int level,
|
|
struct xfs_mount *mp,
|
|
const void *buf,
|
|
size_t bufsize,
|
|
const char *filename,
|
|
int linenum,
|
|
xfs_failaddr_t failaddr)
|
|
{
|
|
if (buf && level <= xfs_error_level)
|
|
xfs_hex_dump(buf, bufsize);
|
|
xfs_error_report(tag, level, mp, filename, linenum, failaddr);
|
|
xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
|
|
}
|
|
|
|
/*
|
|
* Complain about the kinds of metadata corruption that we can't detect from a
|
|
* verifier, such as incorrect inter-block relationship data. Does not set
|
|
* bp->b_error.
|
|
*
|
|
* Call xfs_buf_mark_corrupt, not this function.
|
|
*/
|
|
void
|
|
xfs_buf_corruption_error(
|
|
struct xfs_buf *bp,
|
|
xfs_failaddr_t fa)
|
|
{
|
|
struct xfs_mount *mp = bp->b_mount;
|
|
|
|
xfs_alert_tag(mp, XFS_PTAG_VERIFIER_ERROR,
|
|
"Metadata corruption detected at %pS, %s block 0x%llx",
|
|
fa, bp->b_ops->name, bp->b_bn);
|
|
|
|
xfs_alert(mp, "Unmount and run xfs_repair");
|
|
|
|
if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
|
|
xfs_stack_trace();
|
|
}
|
|
|
|
/*
|
|
* Warnings specifically for verifier errors. Differentiate CRC vs. invalid
|
|
* values, and omit the stack trace unless the error level is tuned high.
|
|
*/
|
|
void
|
|
xfs_buf_verifier_error(
|
|
struct xfs_buf *bp,
|
|
int error,
|
|
const char *name,
|
|
const void *buf,
|
|
size_t bufsz,
|
|
xfs_failaddr_t failaddr)
|
|
{
|
|
struct xfs_mount *mp = bp->b_mount;
|
|
xfs_failaddr_t fa;
|
|
int sz;
|
|
|
|
fa = failaddr ? failaddr : __return_address;
|
|
__xfs_buf_ioerror(bp, error, fa);
|
|
|
|
xfs_alert_tag(mp, XFS_PTAG_VERIFIER_ERROR,
|
|
"Metadata %s detected at %pS, %s block 0x%llx %s",
|
|
bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
|
|
fa, bp->b_ops->name, bp->b_bn, name);
|
|
|
|
xfs_alert(mp, "Unmount and run xfs_repair");
|
|
|
|
if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
|
|
sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz);
|
|
xfs_alert(mp, "First %d bytes of corrupted metadata buffer:",
|
|
sz);
|
|
xfs_hex_dump(buf, sz);
|
|
}
|
|
|
|
if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
|
|
xfs_stack_trace();
|
|
}
|
|
|
|
/*
|
|
* Warnings specifically for verifier errors. Differentiate CRC vs. invalid
|
|
* values, and omit the stack trace unless the error level is tuned high.
|
|
*/
|
|
void
|
|
xfs_verifier_error(
|
|
struct xfs_buf *bp,
|
|
int error,
|
|
xfs_failaddr_t failaddr)
|
|
{
|
|
return xfs_buf_verifier_error(bp, error, "", xfs_buf_offset(bp, 0),
|
|
XFS_CORRUPTION_DUMP_LEN, failaddr);
|
|
}
|
|
|
|
/*
|
|
* Warnings for inode corruption problems. Don't bother with the stack
|
|
* trace unless the error level is turned up high.
|
|
*/
|
|
void
|
|
xfs_inode_verifier_error(
|
|
struct xfs_inode *ip,
|
|
int error,
|
|
const char *name,
|
|
const void *buf,
|
|
size_t bufsz,
|
|
xfs_failaddr_t failaddr)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
xfs_failaddr_t fa;
|
|
int sz;
|
|
|
|
fa = failaddr ? failaddr : __return_address;
|
|
|
|
xfs_alert(mp, "Metadata %s detected at %pS, inode 0x%llx %s",
|
|
error == -EFSBADCRC ? "CRC error" : "corruption",
|
|
fa, ip->i_ino, name);
|
|
|
|
xfs_alert(mp, "Unmount and run xfs_repair");
|
|
|
|
if (buf && xfs_error_level >= XFS_ERRLEVEL_LOW) {
|
|
sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz);
|
|
xfs_alert(mp, "First %d bytes of corrupted metadata buffer:",
|
|
sz);
|
|
xfs_hex_dump(buf, sz);
|
|
}
|
|
|
|
if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
|
|
xfs_stack_trace();
|
|
}
|