https://bugzilla.kernel.org/show_bug.cgi?id=206399 Bug ID: 206399 Summary: [xfstests xfs/433] BUG: KASAN: use-after-free in xfs_attr3_node_inactive+0x6c8/0x7b0 [xfs] Product: File System Version: 2.5 Kernel Version: linux 5.5+ with xfs-linux xfs-5.6-merge-7 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: XFS Assignee: filesystem_xfs@xxxxxxxxxxxxxxxxxxxxxx Reporter: zlang@xxxxxxxxxx Regression: No xfs/443 always hit below KASAN BUG: FSTYP -- xfs (debug) PLATFORM -- Linux/x86_64 hpe-tm200-01 5.5.0+ #1 SMP Wed Jan 29 06:10:18 EST 2020 MKFS_OPTIONS -- -f -m crc=1,finobt=1,rmapbt=1,reflink=1 -i sparse=1 /dev/sda4 MOUNT_OPTIONS -- -o context=system_u:object_r:nfs_t:s0 /dev/sda4 /mnt/xfstests/mnt2 xfs/433 _check_dmesg: something found in dmesg (see /var/lib/xfstests/results//xfs/433.dmesg) Ran: xfs/433 Failures: xfs/433 Failed 1 of 1 tests [75618.288080] run fstests xfs/433 at 2020-01-30 04:00:53 [75620.394755] XFS (sda5): Mounting V5 Filesystem [75620.488847] XFS (sda5): Ending clean mount [75620.522825] xfs filesystem being mounted at /mnt/xfstests/mnt2 supports timestamps until 2038 (0x7fffffff) [75625.506275] XFS (sda5): Unmounting Filesystem [75625.680838] XFS (sda5): Mounting V5 Filesystem [75625.834275] XFS (sda5): Ending clean mount [75625.885694] xfs filesystem being mounted at /mnt/xfstests/mnt2 supports timestamps until 2038 (0x7fffffff) [75625.985258] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75626.029242] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75626.078339] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75626.124795] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75626.169098] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75626.212549] ================================================================== [75626.245606] BUG: KASAN: use-after-free in xfs_attr3_node_inactive+0x61e/0x8a0 [xfs] [75626.280164] Read of size 4 at addr ffff88881ffab004 by task rm/30390 [75626.315595] CPU: 13 PID: 30390 Comm: rm Tainted: G W 5.5.0+ #1 [75626.347856] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 08/02/2014 [75626.377864] Call Trace: [75626.388868] dump_stack+0x96/0xe0 [75626.403778] print_address_description.constprop.4+0x1f/0x300 [75626.429656] __kasan_report.cold.8+0x76/0xb0 [75626.448950] ? xfs_trans_ordered_buf+0x410/0x440 [xfs] [75626.472393] ? xfs_attr3_node_inactive+0x61e/0x8a0 [xfs] [75626.496705] kasan_report+0xe/0x20 [75626.512134] xfs_attr3_node_inactive+0x61e/0x8a0 [xfs] [75626.535328] ? xfs_da_read_buf+0x235/0x2c0 [xfs] [75626.557270] ? xfs_attr3_leaf_inactive+0x470/0x470 [xfs] [75626.583199] ? xfs_da3_root_split+0x1050/0x1050 [xfs] [75626.607952] ? lock_contended+0xd20/0xd20 [75626.626615] ? xfs_ilock+0x149/0x4c0 [xfs] [75626.644661] ? down_write_nested+0x187/0x3c0 [75626.663892] ? down_write_trylock+0x2f0/0x2f0 [75626.683496] ? __sb_start_write+0x1c4/0x310 [75626.702389] ? down_read_trylock+0x360/0x360 [75626.721669] ? xfs_trans_buf_set_type+0x90/0x1e0 [xfs] [75626.745171] xfs_attr_inactive+0x3e5/0x7b0 [xfs] [75626.766097] ? xfs_attr3_node_inactive+0x8a0/0x8a0 [xfs] [75626.790101] ? lock_downgrade+0x6d0/0x6d0 [75626.808122] ? do_raw_spin_trylock+0xb2/0x180 [75626.827859] ? lock_contended+0xd20/0xd20 [75626.846154] xfs_inactive+0x4b8/0x5b0 [xfs] [75626.865504] xfs_fs_destroy_inode+0x3dc/0xb80 [xfs] [75626.887615] destroy_inode+0xbc/0x1a0 [75626.904172] do_unlinkat+0x451/0x5d0 [75626.920325] ? __ia32_sys_rmdir+0x40/0x40 [75626.938485] ? __check_object_size+0x275/0x324 [75626.958819] ? strncpy_from_user+0x7d/0x350 [75626.977848] do_syscall_64+0x9f/0x4f0 [75626.994333] entry_SYSCALL_64_after_hwframe+0x49/0xbe [75627.017173] RIP: 0033:0x7f968239567b [75627.033260] Code: 73 01 c3 48 8b 0d 0d d8 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d dd d7 2c 00 f7 d8 64 89 01 48 [75627.123796] RSP: 002b:00007ffcdf66ad38 EFLAGS: 00000246 ORIG_RAX: 0000000000000107 [75627.158521] RAX: ffffffffffffffda RBX: 0000562cd8b5d5b0 RCX: 00007f968239567b [75627.190764] RDX: 0000000000000000 RSI: 0000562cd8b5c380 RDI: 00000000ffffff9c [75627.222921] RBP: 0000562cd8b5c2f0 R08: 0000000000000003 R09: 0000000000000000 [75627.255236] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf66af20 [75627.287435] R13: 0000000000000000 R14: 0000562cd8b5d5b0 R15: 0000000000000000 [75627.326616] Allocated by task 30390: [75627.342780] save_stack+0x19/0x80 [75627.357980] __kasan_kmalloc.constprop.7+0xc1/0xd0 [75627.379553] kmem_cache_alloc+0xc8/0x300 [75627.397288] kmem_zone_alloc+0x10a/0x3f0 [xfs] [75627.417376] _xfs_buf_alloc+0x56/0x1140 [xfs] [75627.437051] xfs_buf_get_map+0x126/0x7c0 [xfs] [75627.457103] xfs_buf_read_map+0xb2/0xaa0 [xfs] [75627.477180] xfs_trans_read_buf_map+0x6c8/0x12d0 [xfs] [75627.500420] xfs_da_read_buf+0x1d9/0x2c0 [xfs] [75627.520579] xfs_da3_node_read+0x23/0x80 [xfs] [75627.540620] xfs_attr_inactive+0x5c5/0x7b0 [xfs] [75627.561609] xfs_inactive+0x4b8/0x5b0 [xfs] [75627.581541] xfs_fs_destroy_inode+0x3dc/0xb80 [xfs] [75627.605628] destroy_inode+0xbc/0x1a0 [75627.624025] do_unlinkat+0x451/0x5d0 [75627.641629] do_syscall_64+0x9f/0x4f0 [75627.658156] entry_SYSCALL_64_after_hwframe+0x49/0xbe [75627.687232] Freed by task 30390: [75627.701882] save_stack+0x19/0x80 [75627.716821] __kasan_slab_free+0x125/0x170 [75627.735329] kmem_cache_free+0xcd/0x400 [75627.752745] xfs_buf_rele+0x30a/0xcb0 [xfs] [75627.772731] xfs_attr3_node_inactive+0x1c7/0x8a0 [xfs] [75627.797384] xfs_attr_inactive+0x3e5/0x7b0 [xfs] [75627.818450] xfs_inactive+0x4b8/0x5b0 [xfs] [75627.837455] xfs_fs_destroy_inode+0x3dc/0xb80 [xfs] [75627.859765] destroy_inode+0xbc/0x1a0 [75627.876296] do_unlinkat+0x451/0x5d0 [75627.892466] do_syscall_64+0x9f/0x4f0 [75627.909015] entry_SYSCALL_64_after_hwframe+0x49/0xbe [75627.938572] The buggy address belongs to the object at ffff88881ffaad80 which belongs to the cache xfs_buf of size 680 [75627.994075] The buggy address is located 644 bytes inside of 680-byte region [ffff88881ffaad80, ffff88881ffab028) [75628.047015] The buggy address belongs to the page: [75628.069056] page:ffffea00207fea00 refcount:1 mapcount:0 mapping:ffff888098515400 index:0xffff88881ffa9d40 compound_mapcount: 0 [75628.124539] raw: 0057ffffc0010200 dead000000000100 dead000000000122 ffff888098515400 [75628.162598] raw: ffff88881ffa9d40 0000000080270025 00000001ffffffff 0000000000000000 [75628.197491] page dumped because: kasan: bad access detected [75628.230389] Memory state around the buggy address: [75628.252072] ffff88881ffaaf00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [75628.284801] ffff88881ffaaf80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [75628.317587] >ffff88881ffab000: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [75628.350592] ^ [75628.364746] ffff88881ffab080: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [75628.397289] ffff88881ffab100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [75628.429955] ================================================================== [75628.463111] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75628.507525] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75628.551292] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75628.595229] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75628.642924] XFS (sda5): Injecting error (false) at file fs/xfs/xfs_buf.c, line 2119, on filesystem "sda5" [75628.814284] XFS (sda3): Unmounting Filesystem [75629.252213] XFS (sda5): Unmounting Filesystem [75630.354563] XFS (sda5): Mounting V5 Filesystem [75630.502015] XFS (sda5): Ending clean mount [75630.551753] xfs filesystem being mounted at /mnt/xfstests/mnt2 supports timestamps until 2038 (0x7fffffff) [75630.629204] XFS (sda5): Unmounting Filesystem -- You are receiving this mail because: You are watching the assignee of the bug.
