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7f93cff90f
linux/fs
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Theodore Ts'o 7f93cff90f ext4: fix kernel oops if the journal superblock has a non-zero j_errno 
Commit 84061e0 fixed an accounting bug only to introduce the
possibility of a kernel OOPS if the journal has a non-zero j_errno
field indicating that the file system had detected a fs inconsistency.
After the journal replay, if the journal superblock indicates that the
file system has an error, this indication is transfered to the file
system and then ext4_commit_super() is called to write this to the
disk.

But since the percpu counters are now initialized after the journal
replay, the call to ext4_commit_super() will cause a kernel oops since
it needs to use the percpu counters the ext4 superblock structure.

The fix is to skip setting the ext4 free block and free inode fields
if the percpu counter has not been set.

Thanks to Ken Sumrall for reporting and analyzing the root causes of
this bug.

Addresses-Google-Bug: #3054080

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-10-27 21:30:13 -04:00
..
9p fs/9p: Don't use dotl version of mknod for dotu inode operations 2010-09-13 08:13:03 -05:00
adfs check ATTR_SIZE contraints in inode_change_ok 2010-08-09 16:47:39 -04:00
affs AFFS: wait for sb synchronization when needed 2010-08-09 16:48:51 -04:00
afs Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6 2010-08-13 10:37:30 -07:00
autofs autofs/autofs4: Move compat_ioctl handling into fs 2010-08-09 00:13:34 +02:00
autofs4 autofs4: remove unneeded null check in try_to_fill_dentry() 2010-08-11 08:59:06 -07:00
befs fix typos concerning "initiali[zs]e" 2010-06-16 18:05:05 +02:00
bfs BFS: clean up the superblock usage 2010-08-09 16:48:53 -04:00
btrfs Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block 2010-08-10 15:22:42 -07:00
cachefiles Add a dummy printk function for the maintenance of unused printks 2010-08-12 09:51:35 -07:00
ceph ceph: select CRYPTO 2010-09-17 12:30:31 -07:00
cifs cifs: fix potential double put of TCP session reference 2010-09-14 23:21:03 +00:00
coda Coda: mount hangs because of missed REQ_WRITE rename 2010-09-19 11:03:09 -07:00
configfs fix setattr error handling in sysfs, configfs 2010-06-04 17:16:29 -04:00
cramfs cramfs: only unlock new inodes 2010-08-18 01:01:33 -04:00
debugfs
devpts Simplify devpts_get_sb() failure exits 2010-05-21 18:31:12 -04:00
dlm fs/dlm: Drop unnecessary null test 2010-08-05 14:23:45 -05:00
ecryptfs eCryptfs: Fix encrypted file name lookup regression 2010-08-27 10:50:53 -05:00
efs
exofs Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd 2010-08-11 09:19:43 -07:00
exportfs
ext2 mbcache: Remove unused features 2010-08-09 16:48:45 -04:00
ext3 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-08-10 11:26:52 -07:00
ext4 ext4: fix kernel oops if the journal superblock has a non-zero j_errno 2010-10-27 21:30:13 -04:00
fat remove SWRITE* I/O types 2010-08-18 01:09:01 -04:00
freevxfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-08-10 11:26:52 -07:00
fscache Add a dummy printk function for the maintenance of unused printks 2010-08-12 09:51:35 -07:00
fuse fuse: fix lock annotations 2010-09-07 13:42:41 +02:00
gfs2 GFS2: gfs2_logd should be using interruptible waits 2010-09-17 14:00:10 +01:00
hfs convert remaining ->clear_inode() to ->evict_inode() 2010-08-09 16:48:37 -04:00
hfsplus convert remaining ->clear_inode() to ->evict_inode() 2010-08-09 16:48:37 -04:00
hostfs hostfs ->follow_link() braino 2010-08-18 06:21:10 -04:00
hpfs switch hpfs to ->evict_inode() 2010-08-09 16:48:17 -04:00
hppfs switch hppfs to ->evict_inode() 2010-08-09 16:48:16 -04:00
hugetlbfs new helper: end_writeback() 2010-08-09 16:47:49 -04:00
isofs isofs: Fix lseek() to position beyond 4 GB 2010-08-11 00:29:47 -04:00
jbd remove SWRITE* I/O types 2010-08-18 01:09:01 -04:00
jbd2 jbd2: Add sanity check for attempts to start handle during umount 2010-10-27 21:30:04 -04:00
jffs2 Merge git://git.infradead.org/mtd-2.6 2010-08-10 11:49:21 -07:00
jfs jfs: don't allow os2 xattr namespace overlap with others 2010-08-10 15:33:09 -07:00
lockd
logfs logfs: kill BKL 2010-08-14 00:24:24 +02:00
minix minix: fix regression in minix_mkdir() 2010-09-09 18:57:25 -07:00
ncpfs Merge branch 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing 2010-08-10 13:58:28 -07:00
nfs SUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependencies 2010-09-12 19:57:50 -04:00
nfs_common
nfsd SUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependencies 2010-09-12 19:57:50 -04:00
nilfs2 nilfs2: fix leak of shadow dat inode in error path of load_nilfs 2010-08-30 10:18:03 +09:00
nls
notify fsnotify: drop two useless bools in the fnsotify main loop 2010-08-27 21:42:11 -04:00
ntfs convert remaining ->clear_inode() to ->evict_inode() 2010-08-09 16:48:37 -04:00
ocfs2 o2dlm: force free mles during dlm exit 2010-09-23 14:16:53 -07:00
omfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bcopeland/omfs 2010-08-10 11:47:36 -07:00
openpromfs
partitions [S390] partitions: fix build error in ibm partition detection code 2010-08-13 10:06:55 +02:00
proc /proc/pid/smaps: fix dirty pages accounting 2010-09-22 17:22:39 -07:00
qnx4 get rid of cont_write_begin_newtrunc 2010-08-09 16:47:31 -04:00
quota Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-08-10 11:26:52 -07:00
ramfs check ATTR_SIZE contraints in inode_change_ok 2010-08-09 16:47:39 -04:00
reiserfs remove SWRITE* I/O types 2010-08-18 01:09:01 -04:00
romfs
smbfs switch smbfs to evict_inode() 2010-08-09 16:48:00 -04:00
squashfs Squashfs: fix checkpatch.pl warnings 2010-08-08 22:29:33 +00:00
sysfs sysfs: checking for NULL instead of ERR_PTR 2010-09-03 17:26:28 -07:00
sysv fs/sysv/super.c: add support for non-PDP11 v7 filesystems 2010-08-11 08:59:23 -07:00
ubifs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-08-10 11:26:52 -07:00
udf Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-08-10 11:26:52 -07:00
ufs remove SWRITE* I/O types 2010-08-18 01:09:01 -04:00
xfs xfs: log IO completion workqueue is a high priority queue 2010-09-10 10:16:54 -05:00
aio.c aio: do not return ERESTARTSYS as a result of AIO 2010-09-22 17:22:39 -07:00
anon_inodes.c Revert "anon_inode: set S_IFREG on the anon_inode" 2010-05-27 22:03:05 -04:00
attr.c check ATTR_SIZE contraints in inode_change_ok 2010-08-09 16:47:39 -04:00
bad_inode.c bkl: Remove locked .ioctl file operation 2010-08-14 00:24:24 +02:00
binfmt_aout.c
binfmt_elf_fdpic.c binfmt_elf_fdpic: Fix clear_user() error handling 2010-06-01 08:11:06 -07:00
binfmt_elf.c
binfmt_em86.c
binfmt_flat.c flat: tweak default stack alignment 2010-06-29 15:29:31 -07:00
binfmt_misc.c binfmt_misc: fix binfmt_misc priority 2010-09-09 18:57:24 -07:00
binfmt_script.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
binfmt_som.c
bio-integrity.c fs/bio-integrity.c: return -ENOMEM on kmalloc failure 2010-08-23 13:36:59 +02:00
bio.c block: unify flags for struct bio and struct request 2010-08-07 18:20:39 +02:00
block_dev.c blkdev: cgroup whitelist permission fix 2010-08-11 08:59:18 -07:00
buffer.c remove SWRITE* I/O types 2010-08-18 01:09:01 -04:00
char_dev.c char: Mark /dev/zero and /dev/kmem as not capable of writeback 2010-09-22 09:48:47 +02:00
compat_binfmt_elf.c
compat_ioctl.c bkl: Remove locked .ioctl file operation 2010-08-14 00:24:24 +02:00
compat.c Prevent freeing uninitialized pointer in compat_do_readv_writev 2010-09-22 17:22:38 -07:00
dcache.c fs: brlock vfsmount_lock 2010-08-18 08:35:48 -04:00
dcookies.c
direct-io.c O_DIRECT: fix the splitting up of contiguous I/O 2010-09-09 18:57:22 -07:00
drop_caches.c simplify checks for I_CLEAR/I_FREEING 2010-08-09 16:47:44 -04:00
eventfd.c
eventpoll.c
exec.c execve: make responsive to SIGKILL with large arguments 2010-09-10 08:10:26 -07:00
fcntl.c vfs: take O_NONBLOCK out of the O_* uniqueness test 2010-09-09 18:57:25 -07:00
fifo.c
file_table.c fs: scale files_lock 2010-08-18 08:35:48 -04:00
file.c vfs: use kmalloc() to allocate fdmem if possible 2010-08-11 08:59:02 -07:00
filesystems.c
fs_struct.c fs: fs_struct rwlock to spinlock 2010-08-18 08:35:46 -04:00
fs-writeback.c bdi: Fix warnings in __mark_inode_dirty for /dev/zero and friends 2010-09-22 09:48:47 +02:00
generic_acl.c vfs: update ctime when changing the file's permission by setfacl 2010-08-18 01:04:22 -04:00
inode.c Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify 2010-08-10 11:39:13 -07:00
internal.h fs: brlock vfsmount_lock 2010-08-18 08:35:48 -04:00
ioctl.c fs: Add FITRIM ioctl 2010-10-27 21:30:11 -04:00
ioprio.c
Kconfig fs/Kconfig: Fix typo Userpace -> Userspace 2010-07-20 17:30:22 +02:00
Kconfig.binfmt
libfs.c check ATTR_SIZE contraints in inode_change_ok 2010-08-09 16:47:39 -04:00
locks.c
Makefile Take statfs variants to fs/statfs.c 2010-05-21 18:31:17 -04:00
mbcache.c mbcache: Limit the maximum number of cache entries 2010-08-18 06:24:41 -04:00
mpage.c
namei.c fs: brlock vfsmount_lock 2010-08-18 08:35:48 -04:00
namespace.c VFS: Sanity check mount flags passed to change_mnt_propagation() 2010-09-07 13:46:20 -07:00
nfsctl.c
no-block.c
open.c fs: cleanup files_lock locking 2010-08-18 08:35:47 -04:00
pipe.c pipe: fix check in "set size" fcntl 2010-06-10 19:08:34 +02:00
pnode.c fs: brlock vfsmount_lock 2010-08-18 08:35:48 -04:00
pnode.h
posix_acl.c
read_write.c fsnotify: pass a file instead of an inode to open, read, and write 2010-07-28 09:58:32 -04:00
read_write.h
readdir.c vfs: fix warning: 'dirent' is used uninitialized in this function 2010-08-09 20:45:05 -07:00
select.c
seq_file.c
signalfd.c signalfd: fill in ssi_int for posix timers and message queues 2010-08-11 08:59:20 -07:00
splice.c splice: fix misuse of SPLICE_F_NONBLOCK 2010-08-07 18:52:56 +02:00
stack.c
stat.c Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
statfs.c add f_flags to struct statfs(64) 2010-08-09 16:48:44 -04:00
super.c fs: scale files_lock 2010-08-18 08:35:48 -04:00
sync.c get rid of file_fsync() 2010-08-09 16:47:43 -04:00
timerfd.c
utimes.c Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
xattr_acl.c
xattr.c fs: xattr_handler table should be const 2010-05-21 18:31:18 -04:00