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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-24 13:41:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-24 13:41:37 -0700
commit17403fa277eda1328a7026dfca7e40249f27dc6b (patch)
treed123a1e13c641c023166a553027df98e32a8523c /fs
parent231c807a60715312e2a93a001cc9be9b888bc350 (diff)
parent18915b5873f07e5030e6fb108a050fa7c71c59fb (diff)
downloadlinux-stericsson-17403fa277eda1328a7026dfca7e40249f27dc6b.tar.gz
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o: "Miscellaneous ext4 bug fixes for 5.1" * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: prohibit fstrim in norecovery mode ext4: cleanup bh release code in ext4_ind_remove_space() ext4: brelse all indirect buffer in ext4_ind_remove_space() ext4: report real fs size after failed resize ext4: add missing brelse() in add_new_gdb_meta_bg() ext4: remove useless ext4_pin_inode() ext4: avoid panic during forced reboot ext4: fix data corruption caused by unaligned direct AIO ext4: fix NULL pointer dereference while journal is aborted
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/ext4_jbd2.h2
-rw-r--r--fs/ext4/file.c2
-rw-r--r--fs/ext4/indirect.c43
-rw-r--r--fs/ext4/inode.c30
-rw-r--r--fs/ext4/ioctl.c7
-rw-r--r--fs/ext4/resize.c17
-rw-r--r--fs/ext4/super.c16
7 files changed, 58 insertions, 59 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index a1ac7e9245ec..75a5309f2231 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -384,7 +384,7 @@ static inline void ext4_update_inode_fsync_trans(handle_t *handle,
{
struct ext4_inode_info *ei = EXT4_I(inode);
- if (ext4_handle_valid(handle)) {
+ if (ext4_handle_valid(handle) && !is_handle_aborted(handle)) {
ei->i_sync_tid = handle->h_transaction->t_tid;
if (datasync)
ei->i_datasync_tid = handle->h_transaction->t_tid;
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 69d65d49837b..98ec11f69cd4 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -125,7 +125,7 @@ ext4_unaligned_aio(struct inode *inode, struct iov_iter *from, loff_t pos)
struct super_block *sb = inode->i_sb;
int blockmask = sb->s_blocksize - 1;
- if (pos >= i_size_read(inode))
+ if (pos >= ALIGN(i_size_read(inode), sb->s_blocksize))
return 0;
if ((pos | iov_iter_alignment(from)) & blockmask)
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index c2225f0d31b5..2024d3fa5504 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -1222,6 +1222,7 @@ int ext4_ind_remove_space(handle_t *handle, struct inode *inode,
ext4_lblk_t offsets[4], offsets2[4];
Indirect chain[4], chain2[4];
Indirect *partial, *partial2;
+ Indirect *p = NULL, *p2 = NULL;
ext4_lblk_t max_block;
__le32 nr = 0, nr2 = 0;
int n = 0, n2 = 0;
@@ -1263,7 +1264,7 @@ int ext4_ind_remove_space(handle_t *handle, struct inode *inode,
}
- partial = ext4_find_shared(inode, n, offsets, chain, &nr);
+ partial = p = ext4_find_shared(inode, n, offsets, chain, &nr);
if (nr) {
if (partial == chain) {
/* Shared branch grows from the inode */
@@ -1288,13 +1289,11 @@ int ext4_ind_remove_space(handle_t *handle, struct inode *inode,
partial->p + 1,
(__le32 *)partial->bh->b_data+addr_per_block,
(chain+n-1) - partial);
- BUFFER_TRACE(partial->bh, "call brelse");
- brelse(partial->bh);
partial--;
}
end_range:
- partial2 = ext4_find_shared(inode, n2, offsets2, chain2, &nr2);
+ partial2 = p2 = ext4_find_shared(inode, n2, offsets2, chain2, &nr2);
if (nr2) {
if (partial2 == chain2) {
/*
@@ -1324,16 +1323,14 @@ end_range:
(__le32 *)partial2->bh->b_data,
partial2->p,
(chain2+n2-1) - partial2);
- BUFFER_TRACE(partial2->bh, "call brelse");
- brelse(partial2->bh);
partial2--;
}
goto do_indirects;
}
/* Punch happened within the same level (n == n2) */
- partial = ext4_find_shared(inode, n, offsets, chain, &nr);
- partial2 = ext4_find_shared(inode, n2, offsets2, chain2, &nr2);
+ partial = p = ext4_find_shared(inode, n, offsets, chain, &nr);
+ partial2 = p2 = ext4_find_shared(inode, n2, offsets2, chain2, &nr2);
/* Free top, but only if partial2 isn't its subtree. */
if (nr) {
@@ -1390,11 +1387,7 @@ end_range:
partial->p + 1,
partial2->p,
(chain+n-1) - partial);
- BUFFER_TRACE(partial->bh, "call brelse");
- brelse(partial->bh);
- BUFFER_TRACE(partial2->bh, "call brelse");
- brelse(partial2->bh);
- return 0;
+ goto cleanup;
}
/*
@@ -1409,8 +1402,6 @@ end_range:
partial->p + 1,
(__le32 *)partial->bh->b_data+addr_per_block,
(chain+n-1) - partial);
- BUFFER_TRACE(partial->bh, "call brelse");
- brelse(partial->bh);
partial--;
}
if (partial2 > chain2 && depth2 <= depth) {
@@ -1418,11 +1409,21 @@ end_range:
(__le32 *)partial2->bh->b_data,
partial2->p,
(chain2+n2-1) - partial2);
- BUFFER_TRACE(partial2->bh, "call brelse");
- brelse(partial2->bh);
partial2--;
}
}
+
+cleanup:
+ while (p && p > chain) {
+ BUFFER_TRACE(p->bh, "call brelse");
+ brelse(p->bh);
+ p--;
+ }
+ while (p2 && p2 > chain2) {
+ BUFFER_TRACE(p2->bh, "call brelse");
+ brelse(p2->bh);
+ p2--;
+ }
return 0;
do_indirects:
@@ -1430,7 +1431,7 @@ do_indirects:
switch (offsets[0]) {
default:
if (++n >= n2)
- return 0;
+ break;
nr = i_data[EXT4_IND_BLOCK];
if (nr) {
ext4_free_branches(handle, inode, NULL, &nr, &nr+1, 1);
@@ -1439,7 +1440,7 @@ do_indirects:
/* fall through */
case EXT4_IND_BLOCK:
if (++n >= n2)
- return 0;
+ break;
nr = i_data[EXT4_DIND_BLOCK];
if (nr) {
ext4_free_branches(handle, inode, NULL, &nr, &nr+1, 2);
@@ -1448,7 +1449,7 @@ do_indirects:
/* fall through */
case EXT4_DIND_BLOCK:
if (++n >= n2)
- return 0;
+ break;
nr = i_data[EXT4_TIND_BLOCK];
if (nr) {
ext4_free_branches(handle, inode, NULL, &nr, &nr+1, 3);
@@ -1458,5 +1459,5 @@ do_indirects:
case EXT4_TIND_BLOCK:
;
}
- return 0;
+ goto cleanup;
}
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index b54b261ded36..b32a57bc5d5d 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -6080,36 +6080,6 @@ out:
return;
}
-#if 0
-/*
- * Bind an inode's backing buffer_head into this transaction, to prevent
- * it from being flushed to disk early. Unlike
- * ext4_reserve_inode_write, this leaves behind no bh reference and
- * returns no iloc structure, so the caller needs to repeat the iloc
- * lookup to mark the inode dirty later.
- */
-static int ext4_pin_inode(handle_t *handle, struct inode *inode)
-{
- struct ext4_iloc iloc;
-
- int err = 0;
- if (handle) {
- err = ext4_get_inode_loc(inode, &iloc);
- if (!err) {
- BUFFER_TRACE(iloc.bh, "get_write_access");
- err = jbd2_journal_get_write_access(handle, iloc.bh);
- if (!err)
- err = ext4_handle_dirty_metadata(handle,
- NULL,
- iloc.bh);
- brelse(iloc.bh);
- }
- }
- ext4_std_error(inode->i_sb, err);
- return err;
-}
-#endif
-
int ext4_change_inode_journal_flag(struct inode *inode, int val)
{
journal_t *journal;
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 3c4f8bb59f8a..bab3da4f1e0d 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -1000,6 +1000,13 @@ resizefs_out:
if (!blk_queue_discard(q))
return -EOPNOTSUPP;
+ /*
+ * We haven't replayed the journal, so we cannot use our
+ * block-bitmap-guided storage zapping commands.
+ */
+ if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb))
+ return -EROFS;
+
if (copy_from_user(&range, (struct fstrim_range __user *)arg,
sizeof(range)))
return -EFAULT;
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 3d9b18505c0c..e7ae26e36c9c 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -932,11 +932,18 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
memcpy(n_group_desc, o_group_desc,
EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
n_group_desc[gdb_num] = gdb_bh;
+
+ BUFFER_TRACE(gdb_bh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, gdb_bh);
+ if (err) {
+ kvfree(n_group_desc);
+ brelse(gdb_bh);
+ return err;
+ }
+
EXT4_SB(sb)->s_group_desc = n_group_desc;
EXT4_SB(sb)->s_gdb_count++;
kvfree(o_group_desc);
- BUFFER_TRACE(gdb_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdb_bh);
return err;
}
@@ -2073,6 +2080,10 @@ out:
free_flex_gd(flex_gd);
if (resize_inode != NULL)
iput(resize_inode);
- ext4_msg(sb, KERN_INFO, "resized filesystem to %llu", n_blocks_count);
+ if (err)
+ ext4_warning(sb, "error (%d) occurred during "
+ "file system resize", err);
+ ext4_msg(sb, KERN_INFO, "resized filesystem to %llu",
+ ext4_blocks_count(es));
return err;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index f5b828bf1299..6ed4eb81e674 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -430,6 +430,12 @@ static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
spin_unlock(&sbi->s_md_lock);
}
+static bool system_going_down(void)
+{
+ return system_state == SYSTEM_HALT || system_state == SYSTEM_POWER_OFF
+ || system_state == SYSTEM_RESTART;
+}
+
/* Deal with the reporting of failure conditions on a filesystem such as
* inconsistencies detected or read IO failures.
*
@@ -460,7 +466,12 @@ static void ext4_handle_error(struct super_block *sb)
if (journal)
jbd2_journal_abort(journal, -EIO);
}
- if (test_opt(sb, ERRORS_RO)) {
+ /*
+ * We force ERRORS_RO behavior when system is rebooting. Otherwise we
+ * could panic during 'reboot -f' as the underlying device got already
+ * disabled.
+ */
+ if (test_opt(sb, ERRORS_RO) || system_going_down()) {
ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only");
/*
* Make sure updated value of ->s_mount_flags will be visible
@@ -468,8 +479,7 @@ static void ext4_handle_error(struct super_block *sb)
*/
smp_wmb();
sb->s_flags |= SB_RDONLY;
- }
- if (test_opt(sb, ERRORS_PANIC)) {
+ } else if (test_opt(sb, ERRORS_PANIC)) {
if (EXT4_SB(sb)->s_journal &&
!(EXT4_SB(sb)->s_journal->j_flags & JBD2_REC_ERR))
return;