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d3d2b056de
linux_dsm_epyc7002/fs
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Yu Kuai d3d2b056de reiserfs: add check for root_inode in reiserfs_fill_super 
[ Upstream commit 2acf15b94d5b8ea8392c4b6753a6ffac3135cd78 ]

Our syzcaller report a NULL pointer dereference:

BUG: kernel NULL pointer dereference, address: 0000000000000000
PGD 116e95067 P4D 116e95067 PUD 1080b5067 PMD 0
Oops: 0010 [#1] SMP KASAN
CPU: 7 PID: 592 Comm: a.out Not tainted 5.13.0-next-20210629-dirty #67
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-p4
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffff888114e779b8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff110229cef39 RCX: ffffffffaa67e1aa
RDX: 0000000000000000 RSI: ffff88810a58ee00 RDI: ffff8881233180b0
RBP: ffffffffac38e9c0 R08: ffffffffaa67e17e R09: 0000000000000001
R10: ffffffffb91c5557 R11: fffffbfff7238aaa R12: ffff88810a58ee00
R13: ffff888114e77aa0 R14: 0000000000000000 R15: ffff8881233180b0
FS:  00007f946163c480(0000) GS:ffff88839f1c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001099c1000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __lookup_slow+0x116/0x2d0
 ? page_put_link+0x120/0x120
 ? __d_lookup+0xfc/0x320
 ? d_lookup+0x49/0x90
 lookup_one_len+0x13c/0x170
 ? __lookup_slow+0x2d0/0x2d0
 ? reiserfs_schedule_old_flush+0x31/0x130
 reiserfs_lookup_privroot+0x64/0x150
 reiserfs_fill_super+0x158c/0x1b90
 ? finish_unfinished+0xb10/0xb10
 ? bprintf+0xe0/0xe0
 ? __mutex_lock_slowpath+0x30/0x30
 ? __kasan_check_write+0x20/0x30
 ? up_write+0x51/0xb0
 ? set_blocksize+0x9f/0x1f0
 mount_bdev+0x27c/0x2d0
 ? finish_unfinished+0xb10/0xb10
 ? reiserfs_kill_sb+0x120/0x120
 get_super_block+0x19/0x30
 legacy_get_tree+0x76/0xf0
 vfs_get_tree+0x49/0x160
 ? capable+0x1d/0x30
 path_mount+0xacc/0x1380
 ? putname+0x97/0xd0
 ? finish_automount+0x450/0x450
 ? kmem_cache_free+0xf8/0x5a0
 ? putname+0x97/0xd0
 do_mount+0xe2/0x110
 ? path_mount+0x1380/0x1380
 ? copy_mount_options+0x69/0x140
 __x64_sys_mount+0xf0/0x190
 do_syscall_64+0x35/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

This is because 'root_inode' is initialized with wrong mode, and
it's i_op is set to 'reiserfs_special_inode_operations'. Thus add
check for 'root_inode' to fix the problem.

Link: https://lore.kernel.org/r/20210702040743.1918552-1-yukuai3@huawei.com
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-07-05 18:52:32 +02:00
..
9p fs: 9p: add generic splice_write file operation 2020-12-01 21:40:47 +01:00
adfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
affs fs/affs: release old buffer head on error path 2021-03-04 11:38:37 +01:00
afs afs: Fix tracepoint string placement with built-in AFS 2021-07-28 14:35:41 +02:00
aufs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
autofs autofs: harden ioctl table 2020-10-16 11:11:22 -07:00
befs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
bfs bfs: don't use WARNING: string when it's just info. 2021-01-06 14:56:52 +01:00
btrfs btrfs: fix lost inode on log replay after mix of fsync, rename and inode eviction 2024-07-05 18:07:24 +02:00
cachefiles fs/cachefiles: Remove wait_bit_key layout dependency 2021-03-30 14:32:07 +02:00
ceph init: add dsm gpl source 2024-07-05 18:00:04 +02:00
cifs SMB3: fix readpage for large swap cache 2024-07-05 18:06:15 +02:00
coda
configfs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
cramfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
crypto fscrypt: fix derivation of SipHash keys on big endian CPUs 2021-07-14 16:56:53 +02:00
debugfs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
devpts
dlm fs: dlm: fix memory leak when fenced 2021-07-14 16:55:59 +02:00
ecryptfs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
efivarfs efivarfs: revert "fix memory leak in efivarfs_create()" 2020-11-25 16:55:02 +01:00
efs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
erofs erofs: fix error return code in erofs_read_superblock() 2021-07-14 16:56:53 +02:00
exfat init: add dsm gpl source 2024-07-05 18:00:04 +02:00
exportfs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
ext2 Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
ext4 ext4: fix potential htree corruption when growing large_dir directories 2024-07-05 18:52:29 +02:00
f2fs f2fs: Show casefolding support only when supported 2021-07-25 14:36:17 +02:00
fat init: add dsm gpl source 2024-07-05 18:00:04 +02:00
freevxfs
fscache
fuse init: add dsm gpl source 2024-07-05 18:00:04 +02:00
gfs2 gfs2: Fix error handling in init_statfs 2021-07-14 16:55:38 +02:00
hfs hfs: add lock nesting notation to hfs_find_init 2021-07-31 08:16:12 +02:00
hfsplus init: add dsm gpl source 2024-07-05 18:00:04 +02:00
hostfs hostfs: fix memory handling in follow_link() 2021-04-14 08:42:06 +02:00
hpfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
hugetlbfs hugetlbfs: fix mount mode command line processing 2021-07-28 14:35:46 +02:00
iomap init: add dsm gpl source 2024-07-05 18:00:04 +02:00
isofs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
jbd2 ext4: fix debug format string warning 2021-05-19 10:13:19 +02:00
jffs2 jffs2: check the validity of dstlen in jffs2_zlib_compress() 2021-05-11 14:47:36 +02:00
jfs fs/jfs: Fix missing error code in lmLogInit() 2021-07-20 16:05:40 +02:00
kernfs kernfs: wire up ->splice_read and ->splice_write 2021-01-27 11:55:29 +01:00
lockd init: add dsm gpl source 2024-07-05 18:00:04 +02:00
minix [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
nfs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
nfs_common nfs_common: need lock during iterate through the list 2020-12-30 11:53:45 +01:00
nfsd init: add dsm gpl source 2024-07-05 18:00:04 +02:00
nilfs2 nilfs2: fix memory leak in nilfs_sysfs_delete_device_group 2021-06-30 08:47:24 -04:00
nls
notify init: add dsm gpl source 2024-07-05 18:00:04 +02:00
ntfs ntfs: fix validity check for file name attribute 2021-07-14 16:55:38 +02:00
ocfs2 ocfs2: issue zeroout to EOF blocks 2024-07-05 18:03:15 +02:00
omfs fs: omfs: use kmemdup() rather than kmalloc+memcpy 2020-09-22 23:39:45 -04:00
openpromfs
orangefs orangefs: fix orangefs df output. 2021-07-20 16:05:48 +02:00
overlayfs init: add dsm gpl source 2024-07-05 18:00:04 +02:00
proc init: add dsm gpl source 2024-07-05 18:00:04 +02:00
pstore init: add dsm gpl source 2024-07-05 18:00:04 +02:00
qnx4 [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
qnx6 [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
quota init: add dsm gpl source 2024-07-05 18:00:04 +02:00
ramfs ramfs: fix nommu mmap with gaps in the page cache 2020-10-16 11:11:22 -07:00
reiserfs reiserfs: add check for root_inode in reiserfs_fill_super 2024-07-05 18:52:32 +02:00
romfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
squashfs squashfs: fix divide error in calculate_skip() 2021-05-19 10:13:10 +02:00
sysfs sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output 2020-10-02 12:02:30 +02:00
sysv [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
tracefs
ubifs ubifs: Set/Clear I_LINKABLE under i_lock for whiteout inode 2021-07-20 16:05:51 +02:00
udf init: add dsm gpl source 2024-07-05 18:00:04 +02:00
ufs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
unicode unicode: Add utf8_casefold_hash 2020-09-10 14:03:31 -07:00
vboxsf Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2020-10-15 15:11:56 -07:00
verity fs-verity: use smp_load_acquire() for ->i_verity_info 2020-07-21 16:02:41 -07:00
xfs xfs: fix return of uninitialized value in variable error 2021-05-14 09:50:34 +02:00
zonefs zonefs: fix to update .i_wr_refcnt correctly in zonefs_open_zone() 2021-03-25 09:04:05 +01:00
aio.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
anon_inodes.c
attr.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c binfmt_elf, binfmt_elf_fdpic: use a VMA list snapshot 2020-10-16 11:11:21 -07:00
binfmt_elf.c fs: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
binfmt_em86.c
binfmt_flat.c binfmt_flat: revert "binfmt_flat: don't offset the data start" 2020-08-24 08:49:13 +10:00
binfmt_misc.c binfmt_misc: fix possible deadlock in bm_register_write 2021-03-17 17:06:35 +01:00
binfmt_script.c
block_dev.c block: fix a race between del_gendisk and BLKRRPART 2021-06-03 09:00:45 +02:00
buffer.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
char_dev.c
compat_binfmt_elf.c
coredump.c coredump: fix core_pattern parse error 2020-12-06 10:19:07 -08:00
d_path.c fs: fix NULL dereference due to data race in prepend_path() 2020-10-14 14:54:45 -07:00
dax.c dax: fix ENOMEM handling in grab_mapping_entry() 2021-07-14 16:56:13 +02:00
dcache.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
dcookies.c
direct-io.c fs: direct-io: fix missing sdio->boundary 2021-04-14 08:41:58 +02:00
drop_caches.c
eventfd.c
eventpoll.c fs/epoll: restore waking from ep_done_scan() 2021-05-11 14:47:12 +02:00
exec.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
fcntl.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
fhandle.c
file_table.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
file.c kernel/io_uring: cancel io_uring before task works 2021-01-30 13:55:18 +01:00
filesystems.c
fs_context.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
fs_parser.c fs_parse: mark fs_param_bad_value() as static 2020-10-13 18:38:27 -07:00
fs_pin.c
fs_struct.c vfs: Use sequence counter with associated spinlock 2020-07-29 16:14:27 +02:00
fs_types.c
fs-writeback.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
fsopen.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
init.c init: add an init_dup helper 2020-08-04 21:02:38 -04:00
inode.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
internal.h init: add dsm gpl source 2024-07-05 18:00:04 +02:00
io_uring.c io_uring: fix null-ptr-deref in io_sq_offload_start() 2024-07-05 18:02:24 +02:00
io-wq.c io_uring: fix false WARN_ONCE 2021-07-19 09:44:51 +02:00
io-wq.h io_uring: always batch cancel in *cancel_files() 2021-02-13 13:54:56 +01:00
ioctl.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
Kconfig init: add dsm gpl source 2024-07-05 18:00:04 +02:00
Kconfig.binfmt
kernel_read_file.c fs/kernel_file_read: Add "offset" arg for partial reads 2020-10-05 13:37:04 +02:00
libfs.c libfs: fix error cast of negative value in simple_attr_write() 2020-11-22 10:48:22 -08:00
locks.c Revert "nfsd4: a client's own opens needn't prevent delegations" 2021-03-20 10:43:44 +01:00
Makefile init: add dsm gpl source 2024-07-05 18:00:04 +02:00
mbcache.c
mount.h init: add dsm gpl source 2024-07-05 18:00:04 +02:00
mpage.c
namei.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
namespace.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
no-block.c
nsfs.c
open.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
pipe.c pipe: increase minimum default pipe size to 2 pages 2024-07-05 18:52:29 +02:00
pnode.c
pnode.h mount: fix mounting of detached mounts onto targets that reside on shared mounts 2021-03-17 17:06:13 +01:00
posix_acl.c
proc_namespace.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
read_write.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
readdir.c readdir: make sure to verify directory entry for legacy interfaces too 2021-04-21 13:00:54 +02:00
remap_range.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
select.c kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data() 2021-03-25 09:04:16 +01:00
seq_file.c seq_file: disallow extremely large seq buffer allocations 2021-07-20 16:05:59 +02:00
signalfd.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
splice.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
stack.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
stat.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
statfs.c Add a "nosymfollow" mount option. 2020-08-27 16:06:47 -04:00
super.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
sync.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
syno_acl_api.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
syno_acl.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
syno_acl.h init: add dsm gpl source 2024-07-05 18:00:04 +02:00
timerfd.c
userfaultfd.c userfaultfd: do not untag user pointers 2021-07-28 14:35:46 +02:00
utimes.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00
xattr.c init: add dsm gpl source 2024-07-05 18:00:04 +02:00