Konstantin Komarov
e31195a3ac
fs/ntfs3: Fix incorrect if in ntfs_set_acl_ex
...
We need to update ctime too with mode.
Fixes xfstest generic/307
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:47 +03:00
Konstantin Komarov
0e8235d28f
fs/ntfs3: Check fields while reading
...
Added new functions index_hdr_check and index_buf_check.
Now we check all stuff for correctness while reading from disk.
Also fixed bug with stale nfs data.
Reported-by: van fantasy <g1042620637@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:47 +03:00
Konstantin Komarov
6f80ed14d7
fs/ntfs3: Correct ntfs_check_for_free_space
...
zlen in some cases was bigger than correct value.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:46 +03:00
Konstantin Komarov
910013f7c7
fs/ntfs3: Restore correct state after ENOSPC in attr_data_get_block
...
Added new function ntfs_check_for_free_space.
Added undo mechanism in attr_data_get_block.
Fixes xfstest generic/083
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:46 +03:00
Konstantin Komarov
0ad9dfcb8d
fs/ntfs3: Changing locking in ntfs_rename
...
In some cases we can be in deadlock
because we tried to lock the same dir.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:45 +03:00
Konstantin Komarov
ad26a9c845
fs/ntfs3: Fixing wrong logic in attr_set_size and ntfs_fallocate
...
There were 2 problems:
- in some cases we lost dirty flag;
- cluster allocation can be called even when it wasn't needed.
Fixes xfstest generic/465
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:45 +03:00
Konstantin Komarov
2b108260ea
fs/ntfs3: atomic_open implementation
...
Added ntfs_atomic_open function.
Relaxed locking in ntfs_create_inode.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:45 +03:00
Konstantin Komarov
07f4aa9dd2
fs/ntfs3: Fix wrong indentations
...
Also simplifying code.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:44 +03:00
Konstantin Komarov
c380b52f6c
fs/ntfs3: Change new sparse cluster processing
...
Remove ntfs_sparse_cluster.
Zero clusters in attr_allocate_clusters.
Fixes xfstest generic/263
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:44 +03:00
Konstantin Komarov
2f56a3f8d8
fs/ntfs3: Fixing work with sparse clusters
...
Simplify logic in ntfs_extend_initialized_size, ntfs_sparse_cluster
and ntfs_fallocate.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:43 +03:00
Konstantin Komarov
ba11892889
fs/ntfs3: Simplify ntfs_update_mftmirr function
...
Make err assignment in one place.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:43 +03:00
Konstantin Komarov
3929042111
fs/ntfs3: Remove unused functions
...
Removed attr_must_be_resident and ntfs_query_def.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:43 +03:00
Konstantin Komarov
9144b43820
fs/ntfs3: Fix sparse problems
...
Fixing various problems, detected by sparse.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:42 +03:00
Konstantin Komarov
08811ba59a
fs/ntfs3: Add ntfs_bitmap_weight_le function and refactoring
...
Added ntfs_bitmap_weight_le function.
Changed argument types of bits/bitmap functions.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:42 +03:00
Thomas Kühnel
095d8ce635
fs/ntfs3: Use _le variants of bitops functions
...
The functions from bitops.h already have _le variants so use them to
prevent invalid reads/writes of the bitmap on big endian systems.
Signed-off-by: Thomas Kühnel <thomas.kuehnel@avm.de>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:41 +03:00
Thomas Kühnel
88a8d0d248
fs/ntfs3: Add functions to modify LE bitmaps
...
__bitmap_set/__bitmap_clear only works with bitmaps in CPU order.
Define a variant of these functions in ntfs3 to handle modifying bitmaps
read from the filesystem.
Signed-off-by: Thomas Kühnel <thomas.kuehnel@avm.de>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:41 +03:00
Thomas Kühnel
90c1cd540c
fs/ntfs3: Fix endian conversion in ni_fname_name
...
ni_fname_name called ntfs_cmp_names_cpu which assumes that the first
string is in CPU byte order and the second one in little endian.
In this case both strings are little endian so ntfs_cmp_names is the
correct function to call.
Signed-off-by: Thomas Kühnel <thomas.kuehnel@avm.de>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:40 +03:00
Yin Xiujiang
ecfbd57cf9
fs/ntfs3: Fix slab-out-of-bounds in r_page
...
When PAGE_SIZE is 64K, if read_log_page is called by log_read_rst for
the first time, the size of *buffer would be equal to
DefaultLogPageSize(4K).But for *buffer operations like memcpy,
if the memory area size(n) which being assigned to buffer is larger
than 4K (log->page_size(64K) or bytes(64K-page_off)), it will cause
an out of boundary error.
Call trace:
[...]
kasan_report+0x44/0x130
check_memory_region+0xf8/0x1a0
memcpy+0xc8/0x100
ntfs_read_run_nb+0x20c/0x460
read_log_page+0xd0/0x1f4
log_read_rst+0x110/0x75c
log_replay+0x1e8/0x4aa0
ntfs_loadlog_and_replay+0x290/0x2d0
ntfs_fill_super+0x508/0xec0
get_tree_bdev+0x1fc/0x34c
[...]
Fix this by setting variable r_page to NULL in log_read_rst.
Signed-off-by: Yin Xiujiang <yinxiujiang@kylinos.cn>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-14 19:50:29 +03:00
Dan Carpenter
658015167a
fs/ntfs3: Delete duplicate condition in ntfs_read_mft()
...
There were two patches which addressed the same bug and added the same
condition:
commit 6db620863f887bfc5460
2022-11-12 20:59:45 +03:00
Daniel Pinto
0d19f3d713
fs/ntfs3: Add system.ntfs_attrib_be extended attribute
...
NTFS-3G provides the system.ntfs_attrib_be extended attribute, which
has the same value as system.ntfs_attrib but represented in big-endian.
Some utilities rely on the existence of this extended attribute.
Improves compatibility with NTFS-3G by adding the system.ntfs_attrib_be
extended attribute.
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:45 +03:00
Daniel Pinto
dc0fcc99b1
fs/ntfs3: Rename hidedotfiles mount option to hide_dot_files
...
The hidedotfiles mount option provides the same functionality as
the NTFS-3G hide_dot_files mount option. As such, it should be
named the same for compatibility with NTGS-3G.
Rename the hidedotfiles to hide_dot_files for compatbility with
NTFS-3G.
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:44 +03:00
Daniel Pinto
19b424501d
fs/ntfs3: Add hidedotfiles to the list of enabled mount options
...
Currently, the ntfs3 driver does return the hidedotfiles mount
option in the list of enabled mount options. This can confuse
users who may doubt they enabled the option when not seeing in
the list provided by the mount command.
Add hidedotfiles mount option to the list of enabled options
provided by the mount command when it is enabled.
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:44 +03:00
Daniel Pinto
66223324cb
fs/ntfs3: Make hidedotfiles mount option work when renaming files
...
Currently, the hidedotfiles mount option only has an effect when
creating new files. Removing or adding the starting dot when moving
or renaming files does not update the hidden attribute.
Make hidedotfiles also set or uset the hidden attribute when a file
gains or loses its starting dot by being moved or renamed.
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:43 +03:00
Daniel Pinto
4c9ba192c7
fs/ntfs3: Fix hidedotfiles mount option by reversing behaviour
...
Currently, the hidedotfiles mount option is behaving in the reverse
way of what would be expected: enabling it disables setting the
hidden attribute on files or directories with names starting with a
dot and disabling it enables the setting.
Reverse the behaviour of the hidedotfiles mount option so it matches
what is expected.
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:43 +03:00
Daniel Pinto
1d07a9dfa1
fs/ntfs3: Add windows_names mount option
...
When enabled, the windows_names mount option prevents the creation
of files or directories with names not allowed by Windows. Use
the same option name as NTFS-3G for compatibility.
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:42 +03:00
Nathan Chancellor
75b5e47201
fs/ntfs3: Eliminate unnecessary ternary operator in ntfs_d_compare()
...
'a == b ? 0 : 1' is logically equivalent to 'a != b'.
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:42 +03:00
Abdun Nihaal
019d22eb0e
fs/ntfs3: Validate attribute data and valid sizes
...
The data_size and valid_size fields of non resident attributes should be
less than the its alloc_size field, but this is not checked in
ntfs_read_mft function.
Syzbot reports a allocation order warning due to a large unchecked value
of data_size getting assigned to inode->i_size which is then passed to
kcalloc.
Add sanity check for ensuring that the data_size and valid_size fields
are not larger than alloc_size field.
Link: https://syzkaller.appspot.com/bug?extid=fa4648a5446460b7b963
Reported-and-tested-by: syzbot+fa4648a5446460b7b963@syzkaller.appspotmail.com
Fixes: (82cae269cf
2022-11-12 20:59:41 +03:00
Tetsuo Handa
59bfd7a483
fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_fill_super()
...
syzbot is reporting too large allocation at ntfs_fill_super() [1], for a
crafted filesystem can contain bogus inode->i_size. Add __GFP_NOWARN in
order to avoid too large allocation warning, than exhausting memory by
using kvmalloc().
Link: https://syzkaller.appspot.com/bug?extid=33f3faaa0c08744f7d40 [1]
Reported-by: syzot <syzbot+33f3faaa0c08744f7d40@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:41 +03:00
Tetsuo Handa
0d0f659bf7
fs/ntfs3: Use __GFP_NOWARN allocation at wnd_init()
...
syzbot is reporting too large allocation at wnd_init() [1], for a crafted
filesystem can become wnd->nwnd close to UINT_MAX. Add __GFP_NOWARN in
order to avoid too large allocation warning, than exhausting memory by
using kvcalloc().
Link: https://syzkaller.appspot.com/bug?extid=fa4648a5446460b7b963 [1]
Reported-by: syzot <syzbot+fa4648a5446460b7b963@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:41 +03:00
Abdun Nihaal
557d19675a
fs/ntfs3: Fix slab-out-of-bounds read in ntfs_trim_fs
...
Syzbot reports an out of bound access in ntfs_trim_fs.
The cause of this is using a loop termination condition that compares
window index (iw) with wnd->nbits instead of wnd->nwnd, due to which the
index used for wnd->free_bits exceeds the size of the array allocated.
Fix the loop condition.
Fixes: 3f3b442b5ahttps://syzkaller.appspot.com/bug?extid=b892240eac461e488d51
Reported-by: syzbot+b892240eac461e488d51@syzkaller.appspotmail.com
Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:40 +03:00
Edward Lo
bfcdbae052
fs/ntfs3: Validate index root when initialize NTFS security
...
This enhances the sanity check for $SDH and $SII while initializing NTFS
security, guarantees these index root are legit.
[ 162.459513] BUG: KASAN: use-after-free in hdr_find_e.isra.0+0x10c/0x320
[ 162.460176] Read of size 2 at addr ffff8880037bca99 by task mount/243
[ 162.460851]
[ 162.461252] CPU: 0 PID: 243 Comm: mount Not tainted 6.0.0-rc7 #42
[ 162.461744] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 162.462609] Call Trace:
[ 162.462954] <TASK>
[ 162.463276] dump_stack_lvl+0x49/0x63
[ 162.463822] print_report.cold+0xf5/0x689
[ 162.464608] ? unwind_get_return_address+0x3a/0x60
[ 162.465766] ? hdr_find_e.isra.0+0x10c/0x320
[ 162.466975] kasan_report+0xa7/0x130
[ 162.467506] ? _raw_spin_lock_irq+0xc0/0xf0
[ 162.467998] ? hdr_find_e.isra.0+0x10c/0x320
[ 162.468536] __asan_load2+0x68/0x90
[ 162.468923] hdr_find_e.isra.0+0x10c/0x320
[ 162.469282] ? cmp_uints+0xe0/0xe0
[ 162.469557] ? cmp_sdh+0x90/0x90
[ 162.469864] ? ni_find_attr+0x214/0x300
[ 162.470217] ? ni_load_mi+0x80/0x80
[ 162.470479] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 162.470931] ? ntfs_bread_run+0x190/0x190
[ 162.471307] ? indx_get_root+0xe4/0x190
[ 162.471556] ? indx_get_root+0x140/0x190
[ 162.471833] ? indx_init+0x1e0/0x1e0
[ 162.472069] ? fnd_clear+0x115/0x140
[ 162.472363] ? _raw_spin_lock_irqsave+0x100/0x100
[ 162.472731] indx_find+0x184/0x470
[ 162.473461] ? sysvec_apic_timer_interrupt+0x57/0xc0
[ 162.474429] ? indx_find_buffer+0x2d0/0x2d0
[ 162.474704] ? do_syscall_64+0x3b/0x90
[ 162.474962] dir_search_u+0x196/0x2f0
[ 162.475381] ? ntfs_nls_to_utf16+0x450/0x450
[ 162.475661] ? ntfs_security_init+0x3d6/0x440
[ 162.475906] ? is_sd_valid+0x180/0x180
[ 162.476191] ntfs_extend_init+0x13f/0x2c0
[ 162.476496] ? ntfs_fix_post_read+0x130/0x130
[ 162.476861] ? iput.part.0+0x286/0x320
[ 162.477325] ntfs_fill_super+0x11e0/0x1b50
[ 162.477709] ? put_ntfs+0x1d0/0x1d0
[ 162.477970] ? vsprintf+0x20/0x20
[ 162.478258] ? set_blocksize+0x95/0x150
[ 162.478538] get_tree_bdev+0x232/0x370
[ 162.478789] ? put_ntfs+0x1d0/0x1d0
[ 162.479038] ntfs_fs_get_tree+0x15/0x20
[ 162.479374] vfs_get_tree+0x4c/0x130
[ 162.479729] path_mount+0x654/0xfe0
[ 162.480124] ? putname+0x80/0xa0
[ 162.480484] ? finish_automount+0x2e0/0x2e0
[ 162.480894] ? putname+0x80/0xa0
[ 162.481467] ? kmem_cache_free+0x1c4/0x440
[ 162.482280] ? putname+0x80/0xa0
[ 162.482714] do_mount+0xd6/0xf0
[ 162.483264] ? path_mount+0xfe0/0xfe0
[ 162.484782] ? __kasan_check_write+0x14/0x20
[ 162.485593] __x64_sys_mount+0xca/0x110
[ 162.486024] do_syscall_64+0x3b/0x90
[ 162.486543] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 162.487141] RIP: 0033:0x7f9d374e948a
[ 162.488324] 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
[ 162.489728] RSP: 002b:00007ffe30e73d18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
[ 162.490971] RAX: ffffffffffffffda RBX: 0000561cdb43a060 RCX: 00007f9d374e948a
[ 162.491669] RDX: 0000561cdb43a260 RSI: 0000561cdb43a2e0 RDI: 0000561cdb442af0
[ 162.492050] RBP: 0000000000000000 R08: 0000561cdb43a280 R09: 0000000000000020
[ 162.492459] R10: 00000000c0ed0000 R11: 0000000000000206 R12: 0000561cdb442af0
[ 162.493183] R13: 0000561cdb43a260 R14: 0000000000000000 R15: 00000000ffffffff
[ 162.493644] </TASK>
[ 162.493908]
[ 162.494214] The buggy address belongs to the physical page:
[ 162.494761] page:000000003e38a3d5 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37bc
[ 162.496064] flags: 0xfffffc0000000(node=0|zone=1|lastcpupid=0x1fffff)
[ 162.497278] raw: 000fffffc0000000 ffffea00000df1c8 ffffea00000df008 0000000000000000
[ 162.498928] raw: 0000000000000000 0000000000240000 00000000ffffffff 0000000000000000
[ 162.500542] page dumped because: kasan: bad access detected
[ 162.501057]
[ 162.501242] Memory state around the buggy address:
[ 162.502230] ffff8880037bc980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 162.502977] ffff8880037bca00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 162.503522] >ffff8880037bca80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 162.503963] ^
[ 162.504370] ffff8880037bcb00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 162.504766] ffff8880037bcb80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
Signed-off-by: Edward Lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-11-12 20:59:30 +03:00
Nathan Chancellor
0d6d7c61ff
fs/ntfs3: Don't use uni1 uninitialized in ntfs_d_compare()
...
Clang warns:
fs/ntfs3/namei.c:445:7: error: variable 'uni1' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
if (toupper(c1) != toupper(c2)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
./include/linux/ctype.h:64:20: note: expanded from macro 'toupper'
#define toupper(c) __toupper(c)
^
fs/ntfs3/namei.c:487:12: note: uninitialized use occurs here
__putname(uni1);
^~~~
./include/linux/fs.h:2789:65: note: expanded from macro '__putname'
#define __putname(name) kmem_cache_free(names_cachep, (void *)(name))
^~~~
fs/ntfs3/namei.c:445:3: note: remove the 'if' if its condition is always false
if (toupper(c1) != toupper(c2)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ntfs3/namei.c:434:7: error: variable 'uni1' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
if (!lm--) {
^~~~~
fs/ntfs3/namei.c:487:12: note: uninitialized use occurs here
__putname(uni1);
^~~~
./include/linux/fs.h:2789:65: note: expanded from macro '__putname'
#define __putname(name) kmem_cache_free(names_cachep, (void *)(name))
^~~~
fs/ntfs3/namei.c:434:3: note: remove the 'if' if its condition is always false
if (!lm--) {
^~~~~~~~~~~~
fs/ntfs3/namei.c:430:22: note: initialize the variable 'uni1' to silence this warning
struct cpu_str *uni1, *uni2;
^
= NULL
2 errors generated.
There is no point in calling __putname() in these particular error
paths, as there has been no corresponding __getname() call yet. Just
return directly in these blocks to clear up the warning.
Fixes: a3a956c78ehttps://github.com/ClangBuiltLinux/linux/issues/1729
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-10-26 19:32:02 +03:00
Yuan Can
d45da67cae
fs/ntfs3: Use strcmp to determine attribute type
...
The way of determin attribute type is just matching
name with the predefined string, do this with strcmp
to simplify the code.
Signed-off-by: Yuan Can <yuancan@huawei.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:55 +03:00
Hawkins Jiawei
887bfc5460
fs/ntfs3: Fix slab-out-of-bounds read in run_unpack
...
Syzkaller reports slab-out-of-bounds bug as follows:
==================================================================
BUG: KASAN: slab-out-of-bounds in run_unpack+0x8b7/0x970 fs/ntfs3/run.c:944
Read of size 1 at addr ffff88801bbdff02 by task syz-executor131/3611
[...]
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:317 [inline]
print_report.cold+0x2ba/0x719 mm/kasan/report.c:433
kasan_report+0xb1/0x1e0 mm/kasan/report.c:495
run_unpack+0x8b7/0x970 fs/ntfs3/run.c:944
run_unpack_ex+0xb0/0x7c0 fs/ntfs3/run.c:1057
ntfs_read_mft fs/ntfs3/inode.c:368 [inline]
ntfs_iget5+0xc20/0x3280 fs/ntfs3/inode.c:501
ntfs_loadlog_and_replay+0x124/0x5d0 fs/ntfs3/fsntfs.c:272
ntfs_fill_super+0x1eff/0x37f0 fs/ntfs3/super.c:1018
get_tree_bdev+0x440/0x760 fs/super.c:1323
vfs_get_tree+0x89/0x2f0 fs/super.c:1530
do_new_mount fs/namespace.c:3040 [inline]
path_mount+0x1326/0x1e20 fs/namespace.c:3370
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount fs/namespace.c:3568 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
[...]
</TASK>
The buggy address belongs to the physical page:
page:ffffea00006ef600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1bbd8
head:ffffea00006ef600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88801bbdfe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88801bbdfe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801bbdff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff88801bbdff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88801bbe0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Kernel will tries to read record and parse MFT from disk in
ntfs_read_mft().
Yet the problem is that during enumerating attributes in record,
kernel doesn't check whether run_off field loading from the disk
is a valid value.
To be more specific, if attr->nres.run_off is larger than attr->size,
kernel will passes an invalid argument run_buf_size in
run_unpack_ex(), which having an integer overflow. Then this invalid
argument will triggers the slab-out-of-bounds Read bug as above.
This patch solves it by adding the sanity check between
the offset to packed runs and attribute size.
link: https://lore.kernel.org/all/0000000000009145fc05e94bd5c3@google.com/#t
Reported-and-tested-by: syzbot+8d6fbb27a6aded64b25b@syzkaller.appspotmail.com
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:55 +03:00
Edward Lo
54e45702b6
fs/ntfs3: Validate resident attribute name
...
Though we already have some sanity checks while enumerating attributes,
resident attribute names aren't included. This patch checks the resident
attribute names are in the valid ranges.
[ 259.209031] BUG: KASAN: slab-out-of-bounds in ni_create_attr_list+0x1e1/0x850
[ 259.210770] Write of size 426 at addr ffff88800632f2b2 by task exp/255
[ 259.211551]
[ 259.212035] CPU: 0 PID: 255 Comm: exp Not tainted 6.0.0-rc6 #37
[ 259.212955] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 259.214387] Call Trace:
[ 259.214640] <TASK>
[ 259.214895] dump_stack_lvl+0x49/0x63
[ 259.215284] print_report.cold+0xf5/0x689
[ 259.215565] ? kasan_poison+0x3c/0x50
[ 259.215778] ? kasan_unpoison+0x28/0x60
[ 259.215991] ? ni_create_attr_list+0x1e1/0x850
[ 259.216270] kasan_report+0xa7/0x130
[ 259.216481] ? ni_create_attr_list+0x1e1/0x850
[ 259.216719] kasan_check_range+0x15a/0x1d0
[ 259.216939] memcpy+0x3c/0x70
[ 259.217136] ni_create_attr_list+0x1e1/0x850
[ 259.217945] ? __rcu_read_unlock+0x5b/0x280
[ 259.218384] ? ni_remove_attr+0x2e0/0x2e0
[ 259.218712] ? kernel_text_address+0xcf/0xe0
[ 259.219064] ? __kernel_text_address+0x12/0x40
[ 259.219434] ? arch_stack_walk+0x9e/0xf0
[ 259.219668] ? __this_cpu_preempt_check+0x13/0x20
[ 259.219904] ? sysvec_apic_timer_interrupt+0x57/0xc0
[ 259.220140] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 259.220561] ni_ins_attr_ext+0x52c/0x5c0
[ 259.220984] ? ni_create_attr_list+0x850/0x850
[ 259.221532] ? run_deallocate+0x120/0x120
[ 259.221972] ? vfs_setxattr+0x128/0x300
[ 259.222688] ? setxattr+0x126/0x140
[ 259.222921] ? path_setxattr+0x164/0x180
[ 259.223431] ? __x64_sys_setxattr+0x6d/0x80
[ 259.223828] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 259.224417] ? mi_find_attr+0x3c/0xf0
[ 259.224772] ni_insert_attr+0x1ba/0x420
[ 259.225216] ? ni_ins_attr_ext+0x5c0/0x5c0
[ 259.225504] ? ntfs_read_ea+0x119/0x450
[ 259.225775] ni_insert_resident+0xc0/0x1c0
[ 259.226316] ? ni_insert_nonresident+0x400/0x400
[ 259.227001] ? __kasan_kmalloc+0x88/0xb0
[ 259.227468] ? __kmalloc+0x192/0x320
[ 259.227773] ntfs_set_ea+0x6bf/0xb30
[ 259.228216] ? ftrace_graph_ret_addr+0x2a/0xb0
[ 259.228494] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 259.228838] ? ntfs_read_ea+0x450/0x450
[ 259.229098] ? is_bpf_text_address+0x24/0x40
[ 259.229418] ? kernel_text_address+0xcf/0xe0
[ 259.229681] ? __kernel_text_address+0x12/0x40
[ 259.229948] ? unwind_get_return_address+0x3a/0x60
[ 259.230271] ? write_profile+0x270/0x270
[ 259.230537] ? arch_stack_walk+0x9e/0xf0
[ 259.230836] ntfs_setxattr+0x114/0x5c0
[ 259.231099] ? ntfs_set_acl_ex+0x2e0/0x2e0
[ 259.231529] ? evm_protected_xattr_common+0x6d/0x100
[ 259.231817] ? posix_xattr_acl+0x13/0x80
[ 259.232073] ? evm_protect_xattr+0x1f7/0x440
[ 259.232351] __vfs_setxattr+0xda/0x120
[ 259.232635] ? xattr_resolve_name+0x180/0x180
[ 259.232912] __vfs_setxattr_noperm+0x93/0x300
[ 259.233219] __vfs_setxattr_locked+0x141/0x160
[ 259.233492] ? kasan_poison+0x3c/0x50
[ 259.233744] vfs_setxattr+0x128/0x300
[ 259.234002] ? __vfs_setxattr_locked+0x160/0x160
[ 259.234837] do_setxattr+0xb8/0x170
[ 259.235567] ? vmemdup_user+0x53/0x90
[ 259.236212] setxattr+0x126/0x140
[ 259.236491] ? do_setxattr+0x170/0x170
[ 259.236791] ? debug_smp_processor_id+0x17/0x20
[ 259.237232] ? kasan_quarantine_put+0x57/0x180
[ 259.237605] ? putname+0x80/0xa0
[ 259.237870] ? __kasan_slab_free+0x11c/0x1b0
[ 259.238234] ? putname+0x80/0xa0
[ 259.238500] ? preempt_count_sub+0x18/0xc0
[ 259.238775] ? __mnt_want_write+0xaa/0x100
[ 259.238990] ? mnt_want_write+0x8b/0x150
[ 259.239290] path_setxattr+0x164/0x180
[ 259.239605] ? setxattr+0x140/0x140
[ 259.239849] ? debug_smp_processor_id+0x17/0x20
[ 259.240174] ? fpregs_assert_state_consistent+0x67/0x80
[ 259.240411] __x64_sys_setxattr+0x6d/0x80
[ 259.240715] do_syscall_64+0x3b/0x90
[ 259.240934] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 259.241697] RIP: 0033:0x7fc6b26e4469
[ 259.242647] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 088
[ 259.244512] RSP: 002b:00007ffc3c7841f8 EFLAGS: 00000217 ORIG_RAX: 00000000000000bc
[ 259.245086] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc6b26e4469
[ 259.246025] RDX: 00007ffc3c784380 RSI: 00007ffc3c7842e0 RDI: 00007ffc3c784238
[ 259.246961] RBP: 00007ffc3c788410 R08: 0000000000000001 R09: 00007ffc3c7884f8
[ 259.247775] R10: 000000000000007f R11: 0000000000000217 R12: 00000000004004e0
[ 259.248534] R13: 00007ffc3c7884f0 R14: 0000000000000000 R15: 0000000000000000
[ 259.249368] </TASK>
[ 259.249644]
[ 259.249888] Allocated by task 255:
[ 259.250283] kasan_save_stack+0x26/0x50
[ 259.250957] __kasan_kmalloc+0x88/0xb0
[ 259.251826] __kmalloc+0x192/0x320
[ 259.252745] ni_create_attr_list+0x11e/0x850
[ 259.253298] ni_ins_attr_ext+0x52c/0x5c0
[ 259.253685] ni_insert_attr+0x1ba/0x420
[ 259.253974] ni_insert_resident+0xc0/0x1c0
[ 259.254311] ntfs_set_ea+0x6bf/0xb30
[ 259.254629] ntfs_setxattr+0x114/0x5c0
[ 259.254859] __vfs_setxattr+0xda/0x120
[ 259.255155] __vfs_setxattr_noperm+0x93/0x300
[ 259.255445] __vfs_setxattr_locked+0x141/0x160
[ 259.255862] vfs_setxattr+0x128/0x300
[ 259.256251] do_setxattr+0xb8/0x170
[ 259.256522] setxattr+0x126/0x140
[ 259.256911] path_setxattr+0x164/0x180
[ 259.257308] __x64_sys_setxattr+0x6d/0x80
[ 259.257637] do_syscall_64+0x3b/0x90
[ 259.257970] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 259.258550]
[ 259.258772] The buggy address belongs to the object at ffff88800632f000
[ 259.258772] which belongs to the cache kmalloc-1k of size 1024
[ 259.260190] The buggy address is located 690 bytes inside of
[ 259.260190] 1024-byte region [ffff88800632f000, ffff88800632f400)
[ 259.261412]
[ 259.261743] The buggy address belongs to the physical page:
[ 259.262354] page:0000000081e8cac9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632c
[ 259.263722] head:0000000081e8cac9 order:2 compound_mapcount:0 compound_pincount:0
[ 259.264284] flags: 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff)
[ 259.265312] raw: 000fffffc0010200 ffffea0000060d00 dead000000000004 ffff888001041dc0
[ 259.265772] raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
[ 259.266305] page dumped because: kasan: bad access detected
[ 259.266588]
[ 259.266728] Memory state around the buggy address:
[ 259.267225] ffff88800632f300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 259.267841] ffff88800632f380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 259.269111] >ffff88800632f400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 259.269626] ^
[ 259.270162] ffff88800632f480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 259.270810] ffff88800632f500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Signed-off-by: Edward Lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:54 +03:00
Edward Lo
4d42ecda23
fs/ntfs3: Validate buffer length while parsing index
...
indx_read is called when we have some NTFS directory operations that
need more information from the index buffers. This adds a sanity check
to make sure the returned index buffer length is legit, or we may have
some out-of-bound memory accesses.
[ 560.897595] BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x10c/0x320
[ 560.898321] Read of size 2 at addr ffff888009497238 by task exp/245
[ 560.898760]
[ 560.899129] CPU: 0 PID: 245 Comm: exp Not tainted 6.0.0-rc6 #37
[ 560.899505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 560.900170] Call Trace:
[ 560.900407] <TASK>
[ 560.900732] dump_stack_lvl+0x49/0x63
[ 560.901108] print_report.cold+0xf5/0x689
[ 560.901395] ? hdr_find_e.isra.0+0x10c/0x320
[ 560.901716] kasan_report+0xa7/0x130
[ 560.901950] ? hdr_find_e.isra.0+0x10c/0x320
[ 560.902208] __asan_load2+0x68/0x90
[ 560.902427] hdr_find_e.isra.0+0x10c/0x320
[ 560.902846] ? cmp_uints+0xe0/0xe0
[ 560.903363] ? cmp_sdh+0x90/0x90
[ 560.903883] ? ntfs_bread_run+0x190/0x190
[ 560.904196] ? rwsem_down_read_slowpath+0x750/0x750
[ 560.904969] ? ntfs_fix_post_read+0xe0/0x130
[ 560.905259] ? __kasan_check_write+0x14/0x20
[ 560.905599] ? up_read+0x1a/0x90
[ 560.905853] ? indx_read+0x22c/0x380
[ 560.906096] indx_find+0x2ef/0x470
[ 560.906352] ? indx_find_buffer+0x2d0/0x2d0
[ 560.906692] ? __kasan_kmalloc+0x88/0xb0
[ 560.906977] dir_search_u+0x196/0x2f0
[ 560.907220] ? ntfs_nls_to_utf16+0x450/0x450
[ 560.907464] ? __kasan_check_write+0x14/0x20
[ 560.907747] ? mutex_lock+0x8f/0xe0
[ 560.907970] ? __mutex_lock_slowpath+0x20/0x20
[ 560.908214] ? kmem_cache_alloc+0x143/0x4b0
[ 560.908459] ntfs_lookup+0xe0/0x100
[ 560.908788] __lookup_slow+0x116/0x220
[ 560.909050] ? lookup_fast+0x1b0/0x1b0
[ 560.909309] ? lookup_fast+0x13f/0x1b0
[ 560.909601] walk_component+0x187/0x230
[ 560.909944] link_path_walk.part.0+0x3f0/0x660
[ 560.910285] ? handle_lookup_down+0x90/0x90
[ 560.910618] ? path_init+0x642/0x6e0
[ 560.911084] ? percpu_counter_add_batch+0x6e/0xf0
[ 560.912559] ? __alloc_file+0x114/0x170
[ 560.913008] path_openat+0x19c/0x1d10
[ 560.913419] ? getname_flags+0x73/0x2b0
[ 560.913815] ? kasan_save_stack+0x3a/0x50
[ 560.914125] ? kasan_save_stack+0x26/0x50
[ 560.914542] ? __kasan_slab_alloc+0x6d/0x90
[ 560.914924] ? kmem_cache_alloc+0x143/0x4b0
[ 560.915339] ? getname_flags+0x73/0x2b0
[ 560.915647] ? getname+0x12/0x20
[ 560.916114] ? __x64_sys_open+0x4c/0x60
[ 560.916460] ? path_lookupat.isra.0+0x230/0x230
[ 560.916867] ? __isolate_free_page+0x2e0/0x2e0
[ 560.917194] do_filp_open+0x15c/0x1f0
[ 560.917448] ? may_open_dev+0x60/0x60
[ 560.917696] ? expand_files+0xa4/0x3a0
[ 560.917923] ? __kasan_check_write+0x14/0x20
[ 560.918185] ? _raw_spin_lock+0x88/0xdb
[ 560.918409] ? _raw_spin_lock_irqsave+0x100/0x100
[ 560.918783] ? _find_next_bit+0x4a/0x130
[ 560.919026] ? _raw_spin_unlock+0x19/0x40
[ 560.919276] ? alloc_fd+0x14b/0x2d0
[ 560.919635] do_sys_openat2+0x32a/0x4b0
[ 560.920035] ? file_open_root+0x230/0x230
[ 560.920336] ? __rcu_read_unlock+0x5b/0x280
[ 560.920813] do_sys_open+0x99/0xf0
[ 560.921208] ? filp_open+0x60/0x60
[ 560.921482] ? exit_to_user_mode_prepare+0x49/0x180
[ 560.921867] __x64_sys_open+0x4c/0x60
[ 560.922128] do_syscall_64+0x3b/0x90
[ 560.922369] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 560.923030] RIP: 0033:0x7f7dff2e4469
[ 560.923681] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 088
[ 560.924451] RSP: 002b:00007ffd41a210b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000002
[ 560.925168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7dff2e4469
[ 560.925655] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffd41a211f0
[ 560.926085] RBP: 00007ffd41a252a0 R08: 00007f7dff60fba0 R09: 00007ffd41a25388
[ 560.926405] R10: 0000000000400b80 R11: 0000000000000206 R12: 00000000004004e0
[ 560.926867] R13: 00007ffd41a25380 R14: 0000000000000000 R15: 0000000000000000
[ 560.927241] </TASK>
[ 560.927491]
[ 560.927755] Allocated by task 245:
[ 560.928409] kasan_save_stack+0x26/0x50
[ 560.929271] __kasan_kmalloc+0x88/0xb0
[ 560.929778] __kmalloc+0x192/0x320
[ 560.930023] indx_read+0x249/0x380
[ 560.930224] indx_find+0x2a2/0x470
[ 560.930695] dir_search_u+0x196/0x2f0
[ 560.930892] ntfs_lookup+0xe0/0x100
[ 560.931115] __lookup_slow+0x116/0x220
[ 560.931323] walk_component+0x187/0x230
[ 560.931570] link_path_walk.part.0+0x3f0/0x660
[ 560.931791] path_openat+0x19c/0x1d10
[ 560.932008] do_filp_open+0x15c/0x1f0
[ 560.932226] do_sys_openat2+0x32a/0x4b0
[ 560.932413] do_sys_open+0x99/0xf0
[ 560.932709] __x64_sys_open+0x4c/0x60
[ 560.933417] do_syscall_64+0x3b/0x90
[ 560.933776] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 560.934235]
[ 560.934486] The buggy address belongs to the object at ffff888009497000
[ 560.934486] which belongs to the cache kmalloc-512 of size 512
[ 560.935239] The buggy address is located 56 bytes to the right of
[ 560.935239] 512-byte region [ffff888009497000, ffff888009497200)
[ 560.936153]
[ 560.937326] The buggy address belongs to the physical page:
[ 560.938228] page:0000000062a3dfae refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9496
[ 560.939616] head:0000000062a3dfae order:1 compound_mapcount:0 compound_pincount:0
[ 560.940219] flags: 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff)
[ 560.942702] raw: 000fffffc0010200 ffffea0000164f80 dead000000000005 ffff888001041c80
[ 560.943932] raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
[ 560.944568] page dumped because: kasan: bad access detected
[ 560.945735]
[ 560.946112] Memory state around the buggy address:
[ 560.946870] ffff888009497100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 560.947242] ffff888009497180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 560.947611] >ffff888009497200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 560.947915] ^
[ 560.948249] ffff888009497280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 560.948687] ffff888009497300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Signed-off-by: Edward Lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:54 +03:00
Dan Carpenter
e001e60869
fs/ntfs3: Harden against integer overflows
...
Smatch complains that the "add_bytes" is not to be trusted. Use
size_add() to prevent an integer overflow.
Fixes: be71b5cba2
2022-09-30 17:39:53 +03:00
Edward Lo
4f1dc7d975
fs/ntfs3: Validate attribute name offset
...
Although the attribute name length is checked before comparing it to
some common names (e.g., $I30), the offset isn't. This adds a sanity
check for the attribute name offset, guarantee the validity and prevent
possible out-of-bound memory accesses.
[ 191.720056] BUG: unable to handle page fault for address: ffffebde00000008
[ 191.721060] #PF: supervisor read access in kernel mode
[ 191.721586] #PF: error_code(0x0000) - not-present page
[ 191.722079] PGD 0 P4D 0
[ 191.722571] Oops: 0000 [#1 ] PREEMPT SMP KASAN NOPTI
[ 191.723179] CPU: 0 PID: 244 Comm: mount Not tainted 6.0.0-rc4 #28
[ 191.723749] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 191.724832] RIP: 0010:kfree+0x56/0x3b0
[ 191.725870] Code: 80 48 01 d8 0f 82 65 03 00 00 48 c7 c2 00 00 00 80 48 2b 15 2c 06 dd 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 0a 069
[ 191.727375] RSP: 0018:ffff8880076f7878 EFLAGS: 00000286
[ 191.727897] RAX: ffffebde00000000 RBX: 0000000000000040 RCX: ffffffff8528d5b9
[ 191.728531] RDX: 0000777f80000000 RSI: ffffffff8522d49c RDI: 0000000000000040
[ 191.729183] RBP: ffff8880076f78a0 R08: 0000000000000000 R09: 0000000000000000
[ 191.729628] R10: ffff888008949fd8 R11: ffffed10011293fd R12: 0000000000000040
[ 191.730158] R13: ffff888008949f98 R14: ffff888008949ec0 R15: ffff888008949fb0
[ 191.730645] FS: 00007f3520cd7e40(0000) GS:ffff88805ba00000(0000) knlGS:0000000000000000
[ 191.731328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 191.731667] CR2: ffffebde00000008 CR3: 0000000009704000 CR4: 00000000000006f0
[ 191.732568] Call Trace:
[ 191.733231] <TASK>
[ 191.733860] kvfree+0x2c/0x40
[ 191.734632] ni_clear+0x180/0x290
[ 191.735085] ntfs_evict_inode+0x45/0x70
[ 191.735495] evict+0x199/0x280
[ 191.735996] iput.part.0+0x286/0x320
[ 191.736438] iput+0x32/0x50
[ 191.736811] iget_failed+0x23/0x30
[ 191.737270] ntfs_iget5+0x337/0x1890
[ 191.737629] ? ntfs_clear_mft_tail+0x20/0x260
[ 191.738201] ? ntfs_get_block_bmap+0x70/0x70
[ 191.738482] ? ntfs_objid_init+0xf6/0x140
[ 191.738779] ? ntfs_reparse_init+0x140/0x140
[ 191.739266] ntfs_fill_super+0x121b/0x1b50
[ 191.739623] ? put_ntfs+0x1d0/0x1d0
[ 191.739984] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 191.740466] ? put_ntfs+0x1d0/0x1d0
[ 191.740787] ? sb_set_blocksize+0x6a/0x80
[ 191.741272] get_tree_bdev+0x232/0x370
[ 191.741829] ? put_ntfs+0x1d0/0x1d0
[ 191.742669] ntfs_fs_get_tree+0x15/0x20
[ 191.743132] vfs_get_tree+0x4c/0x130
[ 191.743457] path_mount+0x654/0xfe0
[ 191.743938] ? putname+0x80/0xa0
[ 191.744271] ? finish_automount+0x2e0/0x2e0
[ 191.744582] ? putname+0x80/0xa0
[ 191.745053] ? kmem_cache_free+0x1c4/0x440
[ 191.745403] ? putname+0x80/0xa0
[ 191.745616] do_mount+0xd6/0xf0
[ 191.745887] ? path_mount+0xfe0/0xfe0
[ 191.746287] ? __kasan_check_write+0x14/0x20
[ 191.746582] __x64_sys_mount+0xca/0x110
[ 191.746850] do_syscall_64+0x3b/0x90
[ 191.747122] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 191.747517] RIP: 0033:0x7f351fee948a
[ 191.748332] 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
[ 191.749341] RSP: 002b:00007ffd51cf3af8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 191.749960] RAX: ffffffffffffffda RBX: 000055b903733060 RCX: 00007f351fee948a
[ 191.750589] RDX: 000055b903733260 RSI: 000055b9037332e0 RDI: 000055b90373bce0
[ 191.751115] RBP: 0000000000000000 R08: 000055b903733280 R09: 0000000000000020
[ 191.751537] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055b90373bce0
[ 191.751946] R13: 000055b903733260 R14: 0000000000000000 R15: 00000000ffffffff
[ 191.752519] </TASK>
[ 191.752782] Modules linked in:
[ 191.753785] CR2: ffffebde00000008
[ 191.754937] ---[ end trace 0000000000000000 ]---
[ 191.755429] RIP: 0010:kfree+0x56/0x3b0
[ 191.755725] Code: 80 48 01 d8 0f 82 65 03 00 00 48 c7 c2 00 00 00 80 48 2b 15 2c 06 dd 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 0a 069
[ 191.756744] RSP: 0018:ffff8880076f7878 EFLAGS: 00000286
[ 191.757218] RAX: ffffebde00000000 RBX: 0000000000000040 RCX: ffffffff8528d5b9
[ 191.757580] RDX: 0000777f80000000 RSI: ffffffff8522d49c RDI: 0000000000000040
[ 191.758016] RBP: ffff8880076f78a0 R08: 0000000000000000 R09: 0000000000000000
[ 191.758570] R10: ffff888008949fd8 R11: ffffed10011293fd R12: 0000000000000040
[ 191.758957] R13: ffff888008949f98 R14: ffff888008949ec0 R15: ffff888008949fb0
[ 191.759317] FS: 00007f3520cd7e40(0000) GS:ffff88805ba00000(0000) knlGS:0000000000000000
[ 191.759711] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 191.760118] CR2: ffffebde00000008 CR3: 0000000009704000 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
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
Daniel Pinto
0a4e7ce6bc
fs/ntfs3: Fix junction point resolution
...
The ntfs3 file system driver does not convert the target path of
junction points to a proper Linux path. As junction points targets
are always absolute paths (they start with a drive letter), all
junctions will result in broken links.
Translate the targets of junction points to relative paths so they
point to directories inside the mounted volume. Note that Windows
allows junction points to reference directories in another drive.
However, as there is no way to know which drive the junctions refer
to, we assume they always target the same file system they are in.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214833
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:52 +03:00
Shigeru Yoshida
caad9dd879
fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst()
...
syzbot reported UBSAN error as below:
[ 76.901829][ T6677] ================================================================================
[ 76.903908][ T6677] UBSAN: shift-out-of-bounds in fs/ntfs3/super.c:675:13
[ 76.905363][ T6677] shift exponent -247 is negative
This patch avoid this error.
Link: https://syzkaller.appspot.com/bug?id=b0299c09a14aababf0f1c862dd4ebc8ab9eb0179
Fixes: a3b774342fsyzbot+35b87c668935bb55e666@syzkaller.appspotmail.com
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:52 +03:00
Shigeru Yoshida
51e76a232f
fs/ntfs3: Fix memory leak on ntfs_fill_super() error path
...
syzbot reported kmemleak as below:
BUG: memory leak
unreferenced object 0xffff8880122f1540 (size 32):
comm "a.out", pid 6664, jiffies 4294939771 (age 25.500s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 ed ff ed ff 00 00 00 00 ................
backtrace:
[<ffffffff81b16052>] ntfs_init_fs_context+0x22/0x1c0
[<ffffffff8164aaa7>] alloc_fs_context+0x217/0x430
[<ffffffff81626dd4>] path_mount+0x704/0x1080
[<ffffffff81627e7c>] __x64_sys_mount+0x18c/0x1d0
[<ffffffff84593e14>] do_syscall_64+0x34/0xb0
[<ffffffff84600087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
This patch fixes this issue by freeing mount options on error path of
ntfs_fill_super().
Reported-by: syzbot+9d67170b20e8f94351c8@syzkaller.appspotmail.com
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:51 +03:00
Kenneth Lee
92f017c4ae
fs/ntfs3: Use kmalloc_array for allocating multiple elements
...
Prefer using kmalloc_array(a, b) over kmalloc(a * b) as this
improves semantics since kmalloc is intended for allocating an
array of memory.
Signed-off-by: Kenneth Lee <klee33@uw.edu>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:51 +03:00
Alon Zahavi
6d5c9e79b7
fs/ntfs3: Fix attr_punch_hole() null pointer derenference
...
The bug occours due to a misuse of `attr` variable instead of `attr_b`.
`attr` is being initialized as NULL, then being derenfernced
as `attr->res.data_size`.
This bug causes a crash of the ntfs3 driver itself,
If compiled directly to the kernel, it crashes the whole system.
Signed-off-by: Alon Zahavi <zahavi.alon@gmail.com>
Co-developed-by: Tal Lossos <tallossos@gmail.com>
Signed-off-by: Tal Lossos <tallossos@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:50 +03:00
Marc Aurèle La France
f27b92ec09
fs/ntfs3: Fix [df]mask display in /proc/mounts
...
ntfs3's dmask and fmask mount options are 16-bit quantities but are displayed
as 1-extended 32-bit values in /proc/mounts. Fix this by circumventing
integer promotion.
Signed-off-by: Marc Aurèle La France <tsi@tuyoix.net>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:50 +03:00
Edward Lo
2681631c29
fs/ntfs3: Add null pointer check to attr_load_runs_vcn
...
Some metadata files are handled before MFT. This adds a null pointer
check for some corner cases that could lead to NPD while reading these
metadata files for a malformed NTFS image.
[ 240.190827] BUG: kernel NULL pointer dereference, address: 0000000000000158
[ 240.191583] #PF: supervisor read access in kernel mode
[ 240.191956] #PF: error_code(0x0000) - not-present page
[ 240.192391] PGD 0 P4D 0
[ 240.192897] Oops: 0000 [#1 ] PREEMPT SMP KASAN NOPTI
[ 240.193805] CPU: 0 PID: 242 Comm: mount Tainted: G B 5.19.0+ #17
[ 240.194477] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 240.195152] RIP: 0010:ni_find_attr+0xae/0x300
[ 240.195679] Code: c8 48 c7 45 88 c0 4e 5e 86 c7 00 f1 f1 f1 f1 c7 40 04 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 e2 d9f
[ 240.196642] RSP: 0018:ffff88800812f690 EFLAGS: 00000286
[ 240.197019] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff85ef037a
[ 240.197523] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff88e95f60
[ 240.197877] RBP: ffff88800812f738 R08: 0000000000000001 R09: fffffbfff11d2bed
[ 240.198292] R10: ffffffff88e95f67 R11: fffffbfff11d2bec R12: 0000000000000000
[ 240.198647] R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000000
[ 240.199410] FS: 00007f233c33be40(0000) GS:ffff888058200000(0000) knlGS:0000000000000000
[ 240.199895] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 240.200314] CR2: 0000000000000158 CR3: 0000000004d32000 CR4: 00000000000006f0
[ 240.200839] Call Trace:
[ 240.201104] <TASK>
[ 240.201502] ? ni_load_mi+0x80/0x80
[ 240.202297] ? ___slab_alloc+0x465/0x830
[ 240.202614] attr_load_runs_vcn+0x8c/0x1a0
[ 240.202886] ? __kasan_slab_alloc+0x32/0x90
[ 240.203157] ? attr_data_write_resident+0x250/0x250
[ 240.203543] mi_read+0x133/0x2c0
[ 240.203785] mi_get+0x70/0x140
[ 240.204012] ni_load_mi_ex+0xfa/0x190
[ 240.204346] ? ni_std5+0x90/0x90
[ 240.204588] ? __kasan_kmalloc+0x88/0xb0
[ 240.204859] ni_enum_attr_ex+0xf1/0x1c0
[ 240.205107] ? ni_fname_type.part.0+0xd0/0xd0
[ 240.205600] ? ntfs_load_attr_list+0xbe/0x300
[ 240.205864] ? ntfs_cmp_names_cpu+0x125/0x180
[ 240.206157] ntfs_iget5+0x56c/0x1870
[ 240.206510] ? ntfs_get_block_bmap+0x70/0x70
[ 240.206776] ? __kasan_kmalloc+0x88/0xb0
[ 240.207030] ? set_blocksize+0x95/0x150
[ 240.207545] ntfs_fill_super+0xb8f/0x1e20
[ 240.207839] ? put_ntfs+0x1d0/0x1d0
[ 240.208069] ? vsprintf+0x20/0x20
[ 240.208467] ? mutex_unlock+0x81/0xd0
[ 240.208846] ? set_blocksize+0x95/0x150
[ 240.209221] get_tree_bdev+0x232/0x370
[ 240.209804] ? put_ntfs+0x1d0/0x1d0
[ 240.210519] ntfs_fs_get_tree+0x15/0x20
[ 240.210991] vfs_get_tree+0x4c/0x130
[ 240.211455] path_mount+0x645/0xfd0
[ 240.211806] ? putname+0x80/0xa0
[ 240.212112] ? finish_automount+0x2e0/0x2e0
[ 240.212559] ? kmem_cache_free+0x110/0x390
[ 240.212906] ? putname+0x80/0xa0
[ 240.213329] do_mount+0xd6/0xf0
[ 240.213829] ? path_mount+0xfd0/0xfd0
[ 240.214246] ? __kasan_check_write+0x14/0x20
[ 240.214774] __x64_sys_mount+0xca/0x110
[ 240.215080] do_syscall_64+0x3b/0x90
[ 240.215442] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 240.215811] RIP: 0033:0x7f233b4e948a
[ 240.216104] 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
[ 240.217615] RSP: 002b:00007fff02211ec8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 240.218718] RAX: ffffffffffffffda RBX: 0000561cdc35b060 RCX: 00007f233b4e948a
[ 240.219556] RDX: 0000561cdc35b260 RSI: 0000561cdc35b2e0 RDI: 0000561cdc363af0
[ 240.219975] RBP: 0000000000000000 R08: 0000561cdc35b280 R09: 0000000000000020
[ 240.220403] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000561cdc363af0
[ 240.220803] R13: 0000561cdc35b260 R14: 0000000000000000 R15: 00000000ffffffff
[ 240.221256] </TASK>
[ 240.221567] Modules linked in:
[ 240.222028] CR2: 0000000000000158
[ 240.223291] ---[ end trace 0000000000000000 ]---
[ 240.223669] RIP: 0010:ni_find_attr+0xae/0x300
[ 240.224058] Code: c8 48 c7 45 88 c0 4e 5e 86 c7 00 f1 f1 f1 f1 c7 40 04 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 e2 d9f
[ 240.225033] RSP: 0018:ffff88800812f690 EFLAGS: 00000286
[ 240.225968] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff85ef037a
[ 240.226624] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff88e95f60
[ 240.227307] RBP: ffff88800812f738 R08: 0000000000000001 R09: fffffbfff11d2bed
[ 240.227816] R10: ffffffff88e95f67 R11: fffffbfff11d2bec R12: 0000000000000000
[ 240.228330] R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000000
[ 240.228729] FS: 00007f233c33be40(0000) GS:ffff888058200000(0000) knlGS:0000000000000000
[ 240.229281] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 240.230298] CR2: 0000000000000158 CR3: 0000000004d32000 CR4: 00000000000006f0
Signed-off-by: Edward Lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:50 +03:00
Edward Lo
6db620863f
fs/ntfs3: Validate data run offset
...
This adds sanity checks for data run offset. We should make sure data
run offset is legit before trying to unpack them, otherwise we may
encounter use-after-free or some unexpected memory access behaviors.
[ 82.940342] BUG: KASAN: use-after-free in run_unpack+0x2e3/0x570
[ 82.941180] Read of size 1 at addr ffff888008a8487f by task mount/240
[ 82.941670]
[ 82.942069] CPU: 0 PID: 240 Comm: mount Not tainted 5.19.0+ #15
[ 82.942482] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 82.943720] Call Trace:
[ 82.944204] <TASK>
[ 82.944471] dump_stack_lvl+0x49/0x63
[ 82.944908] print_report.cold+0xf5/0x67b
[ 82.945141] ? __wait_on_bit+0x106/0x120
[ 82.945750] ? run_unpack+0x2e3/0x570
[ 82.946626] kasan_report+0xa7/0x120
[ 82.947046] ? run_unpack+0x2e3/0x570
[ 82.947280] __asan_load1+0x51/0x60
[ 82.947483] run_unpack+0x2e3/0x570
[ 82.947709] ? memcpy+0x4e/0x70
[ 82.947927] ? run_pack+0x7a0/0x7a0
[ 82.948158] run_unpack_ex+0xad/0x3f0
[ 82.948399] ? mi_enum_attr+0x14a/0x200
[ 82.948717] ? run_unpack+0x570/0x570
[ 82.949072] ? ni_enum_attr_ex+0x1b2/0x1c0
[ 82.949332] ? ni_fname_type.part.0+0xd0/0xd0
[ 82.949611] ? mi_read+0x262/0x2c0
[ 82.949970] ? ntfs_cmp_names_cpu+0x125/0x180
[ 82.950249] ntfs_iget5+0x632/0x1870
[ 82.950621] ? ntfs_get_block_bmap+0x70/0x70
[ 82.951192] ? evict+0x223/0x280
[ 82.951525] ? iput.part.0+0x286/0x320
[ 82.951969] ntfs_fill_super+0x1321/0x1e20
[ 82.952436] ? put_ntfs+0x1d0/0x1d0
[ 82.952822] ? vsprintf+0x20/0x20
[ 82.953188] ? mutex_unlock+0x81/0xd0
[ 82.953379] ? set_blocksize+0x95/0x150
[ 82.954001] get_tree_bdev+0x232/0x370
[ 82.954438] ? put_ntfs+0x1d0/0x1d0
[ 82.954700] ntfs_fs_get_tree+0x15/0x20
[ 82.955049] vfs_get_tree+0x4c/0x130
[ 82.955292] path_mount+0x645/0xfd0
[ 82.955615] ? putname+0x80/0xa0
[ 82.955955] ? finish_automount+0x2e0/0x2e0
[ 82.956310] ? kmem_cache_free+0x110/0x390
[ 82.956723] ? putname+0x80/0xa0
[ 82.957023] do_mount+0xd6/0xf0
[ 82.957411] ? path_mount+0xfd0/0xfd0
[ 82.957638] ? __kasan_check_write+0x14/0x20
[ 82.957948] __x64_sys_mount+0xca/0x110
[ 82.958310] do_syscall_64+0x3b/0x90
[ 82.958719] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 82.959341] RIP: 0033:0x7fd0d1ce948a
[ 82.960193] 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
[ 82.961532] RSP: 002b:00007ffe59ff69a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 82.962527] RAX: ffffffffffffffda RBX: 0000564dcc107060 RCX: 00007fd0d1ce948a
[ 82.963266] RDX: 0000564dcc107260 RSI: 0000564dcc1072e0 RDI: 0000564dcc10fce0
[ 82.963686] RBP: 0000000000000000 R08: 0000564dcc107280 R09: 0000000000000020
[ 82.964272] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000564dcc10fce0
[ 82.964785] R13: 0000564dcc107260 R14: 0000000000000000 R15: 00000000ffffffff
Signed-off-by: Edward Lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:49 +03:00
edward lo
e19c627765
fs/ntfs3: Add overflow check for attribute size
...
The offset addition could overflow and pass the used size check given an
attribute with very large size (e.g., 0xffffff7f) while parsing MFT
attributes. This could lead to out-of-bound memory R/W if we try to
access the next attribute derived by Add2Ptr(attr, asize)
[ 32.963847] BUG: unable to handle page fault for address: ffff956a83c76067
[ 32.964301] #PF: supervisor read access in kernel mode
[ 32.964526] #PF: error_code(0x0000) - not-present page
[ 32.964893] PGD 4dc01067 P4D 4dc01067 PUD 0
[ 32.965316] Oops: 0000 [#1 ] PREEMPT SMP NOPTI
[ 32.965727] CPU: 0 PID: 243 Comm: mount Not tainted 5.19.0+ #6
[ 32.966050] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 32.966628] RIP: 0010:mi_enum_attr+0x44/0x110
[ 32.967239] Code: 89 f0 48 29 c8 48 89 c1 39 c7 0f 86 94 00 00 00 8b 56 04 83 fa 17 0f 86 88 00 00 00 89 d0 01 ca 48 01 f0 8d 4a 08 39 f9a
[ 32.968101] RSP: 0018:ffffba15c06a7c38 EFLAGS: 00000283
[ 32.968364] RAX: ffff956a83c76067 RBX: ffff956983c76050 RCX: 000000000000006f
[ 32.968651] RDX: 0000000000000067 RSI: ffff956983c760e8 RDI: 00000000000001c8
[ 32.968963] RBP: ffffba15c06a7c38 R08: 0000000000000064 R09: 00000000ffffff7f
[ 32.969249] R10: 0000000000000007 R11: ffff956983c760e8 R12: ffff95698225e000
[ 32.969870] R13: 0000000000000000 R14: ffffba15c06a7cd8 R15: ffff95698225e170
[ 32.970655] FS: 00007fdab8189e40(0000) GS:ffff9569fdc00000(0000) knlGS:0000000000000000
[ 32.971098] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 32.971378] CR2: ffff956a83c76067 CR3: 0000000002c58000 CR4: 00000000000006f0
[ 32.972098] Call Trace:
[ 32.972842] <TASK>
[ 32.973341] ni_enum_attr_ex+0xda/0xf0
[ 32.974087] ntfs_iget5+0x1db/0xde0
[ 32.974386] ? slab_post_alloc_hook+0x53/0x270
[ 32.974778] ? ntfs_fill_super+0x4c7/0x12a0
[ 32.975115] ntfs_fill_super+0x5d6/0x12a0
[ 32.975336] get_tree_bdev+0x175/0x270
[ 32.975709] ? put_ntfs+0x150/0x150
[ 32.975956] ntfs_fs_get_tree+0x15/0x20
[ 32.976191] vfs_get_tree+0x2a/0xc0
[ 32.976374] ? capable+0x19/0x20
[ 32.976572] path_mount+0x484/0xaa0
[ 32.977025] ? putname+0x57/0x70
[ 32.977380] do_mount+0x80/0xa0
[ 32.977555] __x64_sys_mount+0x8b/0xe0
[ 32.978105] do_syscall_64+0x3b/0x90
[ 32.978830] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 32.979311] RIP: 0033:0x7fdab72e948a
[ 32.980015] 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
[ 32.981251] RSP: 002b:00007ffd15b87588 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
[ 32.981832] RAX: ffffffffffffffda RBX: 0000557de0aaf060 RCX: 00007fdab72e948a
[ 32.982234] RDX: 0000557de0aaf260 RSI: 0000557de0aaf2e0 RDI: 0000557de0ab7ce0
[ 32.982714] RBP: 0000000000000000 R08: 0000557de0aaf280 R09: 0000000000000020
[ 32.983046] R10: 00000000c0ed0000 R11: 0000000000000206 R12: 0000557de0ab7ce0
[ 32.983494] R13: 0000557de0aaf260 R14: 0000000000000000 R15: 00000000ffffffff
[ 32.984094] </TASK>
[ 32.984352] Modules linked in:
[ 32.984753] CR2: ffff956a83c76067
[ 32.985911] ---[ end trace 0000000000000000 ]---
[ 32.986555] RIP: 0010:mi_enum_attr+0x44/0x110
[ 32.987217] Code: 89 f0 48 29 c8 48 89 c1 39 c7 0f 86 94 00 00 00 8b 56 04 83 fa 17 0f 86 88 00 00 00 89 d0 01 ca 48 01 f0 8d 4a 08 39 f9a
[ 32.988232] RSP: 0018:ffffba15c06a7c38 EFLAGS: 00000283
[ 32.988532] RAX: ffff956a83c76067 RBX: ffff956983c76050 RCX: 000000000000006f
[ 32.988916] RDX: 0000000000000067 RSI: ffff956983c760e8 RDI: 00000000000001c8
[ 32.989356] RBP: ffffba15c06a7c38 R08: 0000000000000064 R09: 00000000ffffff7f
[ 32.989994] R10: 0000000000000007 R11: ffff956983c760e8 R12: ffff95698225e000
[ 32.990415] R13: 0000000000000000 R14: ffffba15c06a7cd8 R15: ffff95698225e170
[ 32.991011] FS: 00007fdab8189e40(0000) GS:ffff9569fdc00000(0000) knlGS:0000000000000000
[ 32.991524] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 32.991936] CR2: ffff956a83c76067 CR3: 0000000002c58000 CR4: 00000000000006f0
This patch adds an overflow check
Signed-off-by: edward lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:49 +03:00
edward lo
0b66046266
fs/ntfs3: Validate BOOT record_size
...
When the NTFS BOOT record_size field < 0, it represents a
shift value. However, there is no sanity check on the shift result
and the sbi->record_bits calculation through blksize_bits() assumes
the size always > 256, which could lead to NPD while mounting a
malformed NTFS image.
[ 318.675159] BUG: kernel NULL pointer dereference, address: 0000000000000158
[ 318.675682] #PF: supervisor read access in kernel mode
[ 318.675869] #PF: error_code(0x0000) - not-present page
[ 318.676246] PGD 0 P4D 0
[ 318.676502] Oops: 0000 [#1 ] PREEMPT SMP NOPTI
[ 318.676934] CPU: 0 PID: 259 Comm: mount Not tainted 5.19.0 #5
[ 318.677289] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 318.678136] RIP: 0010:ni_find_attr+0x2d/0x1c0
[ 318.678656] Code: 89 ca 4d 89 c7 41 56 41 55 41 54 41 89 cc 55 48 89 fd 53 48 89 d3 48 83 ec 20 65 48 8b 04 25 28 00 00 00 48 89 44 24 180
[ 318.679848] RSP: 0018:ffffa6c8c0297bd8 EFLAGS: 00000246
[ 318.680104] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000080
[ 318.680790] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 318.681679] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 318.682577] R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000080
[ 318.683015] R13: ffff8d5582e68400 R14: 0000000000000100 R15: 0000000000000000
[ 318.683618] FS: 00007fd9e1c81e40(0000) GS:ffff8d55fdc00000(0000) knlGS:0000000000000000
[ 318.684280] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 318.684651] CR2: 0000000000000158 CR3: 0000000002e1a000 CR4: 00000000000006f0
[ 318.685623] Call Trace:
[ 318.686607] <TASK>
[ 318.686872] ? ntfs_alloc_inode+0x1a/0x60
[ 318.687235] attr_load_runs_vcn+0x2b/0xa0
[ 318.687468] mi_read+0xbb/0x250
[ 318.687576] ntfs_iget5+0x114/0xd90
[ 318.687750] ntfs_fill_super+0x588/0x11b0
[ 318.687953] ? put_ntfs+0x130/0x130
[ 318.688065] ? snprintf+0x49/0x70
[ 318.688164] ? put_ntfs+0x130/0x130
[ 318.688256] get_tree_bdev+0x16a/0x260
[ 318.688407] vfs_get_tree+0x20/0xb0
[ 318.688519] path_mount+0x2dc/0x9b0
[ 318.688877] do_mount+0x74/0x90
[ 318.689142] __x64_sys_mount+0x89/0xd0
[ 318.689636] do_syscall_64+0x3b/0x90
[ 318.689998] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 318.690318] RIP: 0033:0x7fd9e133c48a
[ 318.690687] 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
[ 318.691357] RSP: 002b:00007ffd374406c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 318.691632] RAX: ffffffffffffffda RBX: 0000564d0b051080 RCX: 00007fd9e133c48a
[ 318.691920] RDX: 0000564d0b051280 RSI: 0000564d0b051300 RDI: 0000564d0b0596a0
[ 318.692123] RBP: 0000000000000000 R08: 0000564d0b0512a0 R09: 0000000000000020
[ 318.692349] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000564d0b0596a0
[ 318.692673] R13: 0000564d0b051280 R14: 0000000000000000 R15: 00000000ffffffff
[ 318.693007] </TASK>
[ 318.693271] Modules linked in:
[ 318.693614] CR2: 0000000000000158
[ 318.694446] ---[ end trace 0000000000000000 ]---
[ 318.694779] RIP: 0010:ni_find_attr+0x2d/0x1c0
[ 318.694952] Code: 89 ca 4d 89 c7 41 56 41 55 41 54 41 89 cc 55 48 89 fd 53 48 89 d3 48 83 ec 20 65 48 8b 04 25 28 00 00 00 48 89 44 24 180
[ 318.696042] RSP: 0018:ffffa6c8c0297bd8 EFLAGS: 00000246
[ 318.696531] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000080
[ 318.698114] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 318.699286] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 318.699795] R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000080
[ 318.700236] R13: ffff8d5582e68400 R14: 0000000000000100 R15: 0000000000000000
[ 318.700973] FS: 00007fd9e1c81e40(0000) GS:ffff8d55fdc00000(0000) knlGS:0000000000000000
[ 318.701688] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 318.702190] CR2: 0000000000000158 CR3: 0000000002e1a000 CR4: 00000000000006f0
[ 318.726510] mount (259) used greatest stack depth: 13320 bytes left
This patch adds a sanity check.
Signed-off-by: edward lo <edward.lo@ambergroup.io>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:48 +03:00
Konstantin Komarov
43f03acbc1
fs/ntfs3: Rename variables and add comment
...
After renaming we don't need to split code in two lines.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-09-30 17:39:48 +03:00
