Hello,
syzbot found the following issue on:
HEAD commit: e3a87a10f259 Linux 6.1.21
git tree: linux-6.1.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=1271380dc80000
kernel config:
https://syzkaller.appspot.com/x/.config?x=390800ef8aeebc47
dashboard link:
https://syzkaller.appspot.com/bug?extid=224664e3588ec766c818
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/9f5022ccd560/disk-e3a87a10.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/f8524664c631/vmlinux-e3a87a10.xz
kernel image:
https://storage.googleapis.com/syzbot-assets/ad699b30c2c4/Image-e3a87a10.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+224664...@syzkaller.appspotmail.com
ntfs3: loop3: Mark volume as dirty due to NTFS errors
==================================================================
BUG: KASAN: slab-out-of-bounds in ntfs_list_ea fs/ntfs3/xattr.c:187 [inline]
BUG: KASAN: slab-out-of-bounds in ntfs_listxattr+0x290/0x434 fs/ntfs3/xattr.c:710
Read of size 48 at addr ffff0000c91fe330 by task syz-executor.3/12399
CPU: 1 PID: 12399 Comm: syz-executor.3 Not tainted 6.1.21-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
kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189
memcpy+0x48/0x90 mm/kasan/shadow.c:65
ntfs_list_ea fs/ntfs3/xattr.c:187 [inline]
ntfs_listxattr+0x290/0x434 fs/ntfs3/xattr.c:710
vfs_listxattr fs/xattr.c:457 [inline]
listxattr+0x29c/0x3cc fs/xattr.c:804
path_listxattr fs/xattr.c:828 [inline]
__do_sys_listxattr fs/xattr.c:840 [inline]
__se_sys_listxattr fs/xattr.c:837 [inline]
__arm64_sys_listxattr+0x13c/0x21c fs/xattr.c:837
__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 12399:
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_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slab_common.c:955 [inline]
__kmalloc+0xd8/0x1c4 mm/slab_common.c:968
kmalloc include/linux/slab.h:558 [inline]
ntfs_read_ea+0x39c/0x6d8 fs/ntfs3/xattr.c:110
ntfs_list_ea fs/ntfs3/xattr.c:168 [inline]
ntfs_listxattr+0x148/0x434 fs/ntfs3/xattr.c:710
vfs_listxattr fs/xattr.c:457 [inline]
listxattr+0x29c/0x3cc fs/xattr.c:804
path_listxattr fs/xattr.c:828 [inline]
__do_sys_listxattr fs/xattr.c:840 [inline]
__se_sys_listxattr fs/xattr.c:837 [inline]
__arm64_sys_listxattr+0x13c/0x21c fs/xattr.c:837
__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
kvfree_call_rcu+0xb4/0x714 kernel/rcu/tree.c:3343
cfg80211_update_known_bss+0x13c/0x7e0
cfg80211_bss_update+0x160/0x1c64 net/wireless/scan.c:1730
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2499 [inline]
cfg80211_inform_bss_frame_data+0x99c/0x1d50 net/wireless/scan.c:2532
ieee80211_bss_info_update+0x6a4/0xc78 net/mac80211/scan.c:190
ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x954/0x279c net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1632 [inline]
ieee80211_iface_work+0x5c4/0xa90 net/mac80211/iface.c:1686
process_one_work+0x7ac/0x1404 kernel/workqueue.c:2289
worker_thread+0x8e4/0xfec kernel/workqueue.c:2436
kthread+0x24c/0x2d4 kernel/kthread.c:376
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
The buggy address belongs to the object at ffff0000c91fe300
which belongs to the cache kmalloc-128 of size 128
The buggy address is located 48 bytes inside of
128-byte region [ffff0000c91fe300, ffff0000c91fe380)
The buggy address belongs to the physical page:
page:000000004a5acb92 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1091fe
flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000200 fffffc00032f3240 dead000000000003 ffff0000c0002300
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000c91fe200: 05 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000c91fe280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000c91fe300: 00 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc
^
ffff0000c91fe380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000c91fe400: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc