123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457 |
- // 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();
- }
|