OpenCloudOS-Kernel/fs/ntfs3
Edward Lo c1ca8ef026
fs/ntfs3: Add null pointer check for inode operations
This adds a sanity check for the i_op pointer of the inode which is
returned after reading Root directory MFT record. We should check the
i_op is valid before trying to create the root dentry, otherwise we may
encounter a NPD while mounting a image with a funny Root directory MFT
record.

[  114.484325] BUG: kernel NULL pointer dereference, address: 0000000000000008
[  114.484811] #PF: supervisor read access in kernel mode
[  114.485084] #PF: error_code(0x0000) - not-present page
[  114.485606] PGD 0 P4D 0
[  114.485975] Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
[  114.486570] CPU: 0 PID: 237 Comm: mount Tainted: G    B              6.0.0-rc4 #28
[  114.486977] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[  114.488169] RIP: 0010:d_flags_for_inode+0xe0/0x110
[  114.488816] Code: 24 f7 ff 49 83 3e 00 74 41 41 83 cd 02 66 44 89 6b 02 eb 92 48 8d 7b 20 e8 6d 24 f7 ff 4c 8b 73 20 49 8d 7e 08 e8 60 241
[  114.490326] RSP: 0018:ffff8880065e7aa8 EFLAGS: 00000296
[  114.490695] RAX: 0000000000000001 RBX: ffff888008ccd750 RCX: ffffffff84af2aea
[  114.490986] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff87abd020
[  114.491364] RBP: ffff8880065e7ac8 R08: 0000000000000001 R09: fffffbfff0f57a05
[  114.491675] R10: ffffffff87abd027 R11: fffffbfff0f57a04 R12: 0000000000000000
[  114.491954] R13: 0000000000000008 R14: 0000000000000000 R15: ffff888008ccd750
[  114.492397] FS:  00007fdc8a627e40(0000) GS:ffff888058200000(0000) knlGS:0000000000000000
[  114.492797] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  114.493150] CR2: 0000000000000008 CR3: 00000000013ba000 CR4: 00000000000006f0
[  114.493671] Call Trace:
[  114.493890]  <TASK>
[  114.494075]  __d_instantiate+0x24/0x1c0
[  114.494505]  d_instantiate.part.0+0x35/0x50
[  114.494754]  d_make_root+0x53/0x80
[  114.494998]  ntfs_fill_super+0x1232/0x1b50
[  114.495260]  ? put_ntfs+0x1d0/0x1d0
[  114.495499]  ? vsprintf+0x20/0x20
[  114.495723]  ? set_blocksize+0x95/0x150
[  114.495964]  get_tree_bdev+0x232/0x370
[  114.496272]  ? put_ntfs+0x1d0/0x1d0
[  114.496502]  ntfs_fs_get_tree+0x15/0x20
[  114.496859]  vfs_get_tree+0x4c/0x130
[  114.497099]  path_mount+0x654/0xfe0
[  114.497507]  ? putname+0x80/0xa0
[  114.497933]  ? finish_automount+0x2e0/0x2e0
[  114.498362]  ? putname+0x80/0xa0
[  114.498571]  ? kmem_cache_free+0x1c4/0x440
[  114.498819]  ? putname+0x80/0xa0
[  114.499069]  do_mount+0xd6/0xf0
[  114.499343]  ? path_mount+0xfe0/0xfe0
[  114.499683]  ? __kasan_check_write+0x14/0x20
[  114.500133]  __x64_sys_mount+0xca/0x110
[  114.500592]  do_syscall_64+0x3b/0x90
[  114.500930]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  114.501294] RIP: 0033:0x7fdc898e948a
[  114.501542] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008
[  114.502716] RSP: 002b:00007ffd793e58f8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[  114.503175] RAX: ffffffffffffffda RBX: 0000564b2228f060 RCX: 00007fdc898e948a
[  114.503588] RDX: 0000564b2228f260 RSI: 0000564b2228f2e0 RDI: 0000564b22297ce0
[  114.504925] RBP: 0000000000000000 R08: 0000564b2228f280 R09: 0000000000000020
[  114.505484] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000564b22297ce0
[  114.505823] R13: 0000564b2228f260 R14: 0000000000000000 R15: 00000000ffffffff
[  114.506562]  </TASK>
[  114.506887] Modules linked in:
[  114.507648] CR2: 0000000000000008
[  114.508884] ---[ end trace 0000000000000000 ]---
[  114.509675] RIP: 0010:d_flags_for_inode+0xe0/0x110
[  114.510140] Code: 24 f7 ff 49 83 3e 00 74 41 41 83 cd 02 66 44 89 6b 02 eb 92 48 8d 7b 20 e8 6d 24 f7 ff 4c 8b 73 20 49 8d 7e 08 e8 60 241
[  114.511762] RSP: 0018:ffff8880065e7aa8 EFLAGS: 00000296
[  114.512401] RAX: 0000000000000001 RBX: ffff888008ccd750 RCX: ffffffff84af2aea
[  114.513103] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff87abd020
[  114.513512] RBP: ffff8880065e7ac8 R08: 0000000000000001 R09: fffffbfff0f57a05
[  114.513831] R10: ffffffff87abd027 R11: fffffbfff0f57a04 R12: 0000000000000000
[  114.514757] R13: 0000000000000008 R14: 0000000000000000 R15: ffff888008ccd750
[  114.515411] FS:  00007fdc8a627e40(0000) GS:ffff888058200000(0000) knlGS:0000000000000000
[  114.515794] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  114.516208] CR2: 0000000000000008 CR3: 00000000013ba000 CR4: 00000000000006f0

Signed-off-by: Edward Lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:53 +03:00
..
lib fs/ntfs3: Add missing header and guards to lib/ headers 2021-09-13 19:41:44 +03:00
Kconfig
Makefile
attrib.c fs/ntfs3: Fix attr_punch_hole() null pointer derenference 2022-09-30 17:39:50 +03:00
attrlist.c fs/ntfs3: Validate data run offset 2022-09-30 17:39:49 +03:00
bitfunc.c fs/ntfs3: Remove a useless shadowing variable 2021-09-23 19:05:46 +03:00
bitmap.c fs/ntfs3: Use kmalloc_array for allocating multiple elements 2022-09-30 17:39:51 +03:00
debug.h fs/ntfs3. Add forward declarations for structs to debug.h 2021-09-13 19:41:43 +03:00
dir.c fs/ntfs3: Rework ntfs_utf16_to_nls 2021-10-11 19:28:04 +03:00
file.c ntfs3 for 6.0 2022-08-17 14:51:22 -07:00
frecord.c fs/ntfs3: Validate data run offset 2022-09-30 17:39:49 +03:00
fslog.c fs/ntfs3: Validate data run offset 2022-09-30 17:39:49 +03:00
fsntfs.c ntfs3 for 6.0 2022-08-17 14:51:22 -07:00
index.c fs/ntfs3: Add option "nocase" 2022-09-30 17:39:47 +03:00
inode.c fs/ntfs3: Fix junction point resolution 2022-09-30 17:39:52 +03:00
lznt.c fs/ntfs3: Remove tabs before spaces from comment 2021-09-16 17:01:36 +03:00
namei.c fs/ntfs3: Add option "nocase" 2022-09-30 17:39:47 +03:00
ntfs.h fs/ntfs3: Change max hardlinks limit to 4000 2021-09-21 18:37:01 +03:00
ntfs_fs.h fs/ntfs3: Add option "nocase" 2022-09-30 17:39:47 +03:00
record.c fs/ntfs3: Add overflow check for attribute size 2022-09-30 17:39:49 +03:00
run.c fs/ntfs3: Refactoring attr_punch_hole to restore after errors 2022-08-03 18:25:09 +03:00
super.c fs/ntfs3: Add null pointer check for inode operations 2022-09-30 17:39:53 +03:00
upcase.c fs/ntfs3: Add option "nocase" 2022-09-30 17:39:47 +03:00
xattr.c fs.idmapped.fixes.v6.0-rc3 2022-08-22 11:33:02 -07:00