[v6.1] KASAN: use-after-free Read in ntfs_iget5
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syzbot
Mar 15, 2023, 9:32:45 AM3/15/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 6449a0ba6843 Linux 6.1.19
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13291cc2c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=75eadb21ef1208e4
dashboard link: https://syzkaller.appspot.com/bug?extid=8b38fd4f1a3f42833804
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/dc227ecd3e21/disk-6449a0ba.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1d08e21b50c2/vmlinux-6449a0ba.xz
kernel image: https://storage.googleapis.com/syzbot-assets/71a43f2c4d2c/Image-6449a0ba.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8b38fd...@syzkaller.appspotmail.com
ntfs3: loop5: Different NTFS' sector size (4096) and media sector size (512)
==================================================================
BUG: KASAN: use-after-free in ntfs_iget5+0x120/0x2b38 fs/ntfs3/inode.c:518
Read of size 8 at addr ffff0000dd74a080 by task syz-executor.5/25518
CPU: 0 PID: 25518 Comm: syz-executor.5 Not tainted 6.1.19-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call trace:
dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x174/0x4c0 mm/kasan/report.c:395
kasan_report+0xd4/0x130 mm/kasan/report.c:495
__asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351
ntfs_iget5+0x120/0x2b38 fs/ntfs3/inode.c:518
ntfs_fill_super+0x1e38/0x3a04 fs/ntfs3/super.c:1009
get_tree_bdev+0x360/0x54c fs/super.c:1337
ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1359
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Allocated by task 21932:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505
__kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x74/0x458 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x1ac/0x2f8 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3131 [inline]
reiserfs_alloc_inode+0x2c/0xc4 fs/reiserfs/super.c:642
alloc_inode fs/inode.c:259 [inline]
new_inode_pseudo+0x68/0x1d0 fs/inode.c:1018
new_inode+0x38/0x174 fs/inode.c:1046
reiserfs_mkdir+0x18c/0x77c fs/reiserfs/namei.c:815
xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
create_privroot fs/reiserfs/xattr.c:882 [inline]
reiserfs_xattr_init+0x2b0/0x6bc fs/reiserfs/xattr.c:1005
reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
mount_bdev+0x26c/0x368 fs/super.c:1414
get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
legacy_get_tree+0xd4/0x16c fs/fs_context.c:610
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2798
destroy_inode fs/inode.c:314 [inline]
evict+0x5fc/0x68c fs/inode.c:679
iput_final fs/inode.c:1747 [inline]
iput+0x988/0xa6c fs/inode.c:1773
reiserfs_new_inode+0xc24/0x1724 fs/reiserfs/inode.c:2156
reiserfs_mkdir+0x4ac/0x77c fs/reiserfs/namei.c:845
xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
create_privroot fs/reiserfs/xattr.c:882 [inline]
reiserfs_xattr_init+0x2b0/0x6bc fs/reiserfs/xattr.c:1005
reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
mount_bdev+0x26c/0x368 fs/super.c:1414
get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
legacy_get_tree+0xd4/0x16c fs/fs_context.c:610
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Second to last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2798
destroy_inode fs/inode.c:314 [inline]
evict+0x5fc/0x68c fs/inode.c:679
iput_final fs/inode.c:1747 [inline]
iput+0x988/0xa6c fs/inode.c:1773
reiserfs_new_inode+0xc24/0x1724 fs/reiserfs/inode.c:2156
reiserfs_mkdir+0x4ac/0x77c fs/reiserfs/namei.c:845
xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
create_privroot fs/reiserfs/xattr.c:882 [inline]
reiserfs_xattr_init+0x2b0/0x6bc fs/reiserfs/xattr.c:1005
reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
mount_bdev+0x26c/0x368 fs/super.c:1414
get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
legacy_get_tree+0xd4/0x16c fs/fs_context.c:610
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
The buggy address belongs to the object at ffff0000dd749a80
which belongs to the cache reiser_inode_cache of size 1568
The buggy address is located 1536 bytes inside of
1568-byte region [ffff0000dd749a80, ffff0000dd74a0a0)
The buggy address belongs to the physical page:
page:000000007bebbfcc refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000dd749a80 pfn:0x11d748
head:000000007bebbfcc order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000cfef0801
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0b4ac00
raw: ffff0000dd749a80 0000000080130011 00000001ffffffff ffff0000cfef0801
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000dd749f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000dd74a000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000dd74a080: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff0000dd74a100: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00
ffff0000dd74a180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Unable to handle kernel paging request at virtual address dfff800000000002
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
Mem abort info:
ESR = 0x0000000096000006
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x06: level 2 translation fault
Data abort info:
ISV = 0, ISS = 0x00000006
CM = 0, WnR = 0
[dfff800000000002] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 25518 Comm: syz-executor.5 Tainted: G B 6.1.19-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ntfs_iget5+0x12c/0x2b38 fs/ntfs3/inode.c:518
lr : ntfs_iget5+0x120/0x2b38 fs/ntfs3/inode.c:518
sp : ffff8000216475c0
x29: ffff8000216477e0 x28: ffff000112a681e8 x27: ffff7000042c8ee8
x26: ffff8000216479b0 x25: 000000000000000c x24: 0000000000020000
x23: dfff800000000000 x22: ffff8000126b2fa0 x21: 0000000000000010
x20: 0000000000000002 x19: ffff0000dd74a2b0 x18: 1fffe000368b0376
x17: 0000000000000000 x16: ffff800012253e1c x15: 0000000000000000
x14: 0000000000000000 x13: ffffffffffff6278 x12: 0000000000000001
x11: ff808000081b1aa4 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000002 x7 : ffffffffffff6278 x6 : ffffffffffff6248
x5 : ffff800021646dd8 x4 : ffff8000157f5e68 x3 : ffff8000081b1a60
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001
Call trace:
ntfs_iget5+0x12c/0x2b38 fs/ntfs3/inode.c:518
ntfs_fill_super+0x1e38/0x3a04 fs/ntfs3/super.c:1009
get_tree_bdev+0x360/0x54c fs/super.c:1337
ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1359
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Code: 97ca4a72 f94002a8 91004115 d343fea8 (38f76908)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 97ca4a72 bl 0xffffffffff2929c8
4: f94002a8 ldr x8, [x21]
8: 91004115 add x21, x8, #0x10
c: d343fea8 lsr x8, x21, #3
* 10: 38f76908 ldrsb w8, [x8, x23] <-- trapping instruction
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 6449a0ba6843 Linux 6.1.19
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13291cc2c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=75eadb21ef1208e4
dashboard link: https://syzkaller.appspot.com/bug?extid=8b38fd4f1a3f42833804
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/dc227ecd3e21/disk-6449a0ba.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1d08e21b50c2/vmlinux-6449a0ba.xz
kernel image: https://storage.googleapis.com/syzbot-assets/71a43f2c4d2c/Image-6449a0ba.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8b38fd...@syzkaller.appspotmail.com
ntfs3: loop5: Different NTFS' sector size (4096) and media sector size (512)
==================================================================
BUG: KASAN: use-after-free in ntfs_iget5+0x120/0x2b38 fs/ntfs3/inode.c:518
Read of size 8 at addr ffff0000dd74a080 by task syz-executor.5/25518
CPU: 0 PID: 25518 Comm: syz-executor.5 Not tainted 6.1.19-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call trace:
dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x174/0x4c0 mm/kasan/report.c:395
kasan_report+0xd4/0x130 mm/kasan/report.c:495
__asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351
ntfs_iget5+0x120/0x2b38 fs/ntfs3/inode.c:518
ntfs_fill_super+0x1e38/0x3a04 fs/ntfs3/super.c:1009
get_tree_bdev+0x360/0x54c fs/super.c:1337
ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1359
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Allocated by task 21932:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505
__kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x74/0x458 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x1ac/0x2f8 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3131 [inline]
reiserfs_alloc_inode+0x2c/0xc4 fs/reiserfs/super.c:642
alloc_inode fs/inode.c:259 [inline]
new_inode_pseudo+0x68/0x1d0 fs/inode.c:1018
new_inode+0x38/0x174 fs/inode.c:1046
reiserfs_mkdir+0x18c/0x77c fs/reiserfs/namei.c:815
xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
create_privroot fs/reiserfs/xattr.c:882 [inline]
reiserfs_xattr_init+0x2b0/0x6bc fs/reiserfs/xattr.c:1005
reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
mount_bdev+0x26c/0x368 fs/super.c:1414
get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
legacy_get_tree+0xd4/0x16c fs/fs_context.c:610
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2798
destroy_inode fs/inode.c:314 [inline]
evict+0x5fc/0x68c fs/inode.c:679
iput_final fs/inode.c:1747 [inline]
iput+0x988/0xa6c fs/inode.c:1773
reiserfs_new_inode+0xc24/0x1724 fs/reiserfs/inode.c:2156
reiserfs_mkdir+0x4ac/0x77c fs/reiserfs/namei.c:845
xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
create_privroot fs/reiserfs/xattr.c:882 [inline]
reiserfs_xattr_init+0x2b0/0x6bc fs/reiserfs/xattr.c:1005
reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
mount_bdev+0x26c/0x368 fs/super.c:1414
get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
legacy_get_tree+0xd4/0x16c fs/fs_context.c:610
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Second to last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2798
destroy_inode fs/inode.c:314 [inline]
evict+0x5fc/0x68c fs/inode.c:679
iput_final fs/inode.c:1747 [inline]
iput+0x988/0xa6c fs/inode.c:1773
reiserfs_new_inode+0xc24/0x1724 fs/reiserfs/inode.c:2156
reiserfs_mkdir+0x4ac/0x77c fs/reiserfs/namei.c:845
xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
create_privroot fs/reiserfs/xattr.c:882 [inline]
reiserfs_xattr_init+0x2b0/0x6bc fs/reiserfs/xattr.c:1005
reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
mount_bdev+0x26c/0x368 fs/super.c:1414
get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
legacy_get_tree+0xd4/0x16c fs/fs_context.c:610
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
The buggy address belongs to the object at ffff0000dd749a80
which belongs to the cache reiser_inode_cache of size 1568
The buggy address is located 1536 bytes inside of
1568-byte region [ffff0000dd749a80, ffff0000dd74a0a0)
The buggy address belongs to the physical page:
page:000000007bebbfcc refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000dd749a80 pfn:0x11d748
head:000000007bebbfcc order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000cfef0801
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0b4ac00
raw: ffff0000dd749a80 0000000080130011 00000001ffffffff ffff0000cfef0801
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000dd749f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000dd74a000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000dd74a080: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff0000dd74a100: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00
ffff0000dd74a180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Unable to handle kernel paging request at virtual address dfff800000000002
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
Mem abort info:
ESR = 0x0000000096000006
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x06: level 2 translation fault
Data abort info:
ISV = 0, ISS = 0x00000006
CM = 0, WnR = 0
[dfff800000000002] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 25518 Comm: syz-executor.5 Tainted: G B 6.1.19-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ntfs_iget5+0x12c/0x2b38 fs/ntfs3/inode.c:518
lr : ntfs_iget5+0x120/0x2b38 fs/ntfs3/inode.c:518
sp : ffff8000216475c0
x29: ffff8000216477e0 x28: ffff000112a681e8 x27: ffff7000042c8ee8
x26: ffff8000216479b0 x25: 000000000000000c x24: 0000000000020000
x23: dfff800000000000 x22: ffff8000126b2fa0 x21: 0000000000000010
x20: 0000000000000002 x19: ffff0000dd74a2b0 x18: 1fffe000368b0376
x17: 0000000000000000 x16: ffff800012253e1c x15: 0000000000000000
x14: 0000000000000000 x13: ffffffffffff6278 x12: 0000000000000001
x11: ff808000081b1aa4 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000002 x7 : ffffffffffff6278 x6 : ffffffffffff6248
x5 : ffff800021646dd8 x4 : ffff8000157f5e68 x3 : ffff8000081b1a60
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001
Call trace:
ntfs_iget5+0x12c/0x2b38 fs/ntfs3/inode.c:518
ntfs_fill_super+0x1e38/0x3a04 fs/ntfs3/super.c:1009
get_tree_bdev+0x360/0x54c fs/super.c:1337
ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1359
vfs_get_tree+0x90/0x274 fs/super.c:1544
do_new_mount+0x25c/0x8c8 fs/namespace.c:3040
path_mount+0x590/0xe58 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]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Code: 97ca4a72 f94002a8 91004115 d343fea8 (38f76908)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 97ca4a72 bl 0xffffffffff2929c8
4: f94002a8 ldr x8, [x21]
8: 91004115 add x21, x8, #0x10
c: d343fea8 lsr x8, x21, #3
* 10: 38f76908 ldrsb w8, [x8, x23] <-- trapping instruction
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
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https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Feb 25, 2024, 3:58:14 AMFeb 25
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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