================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434 Read of size 2 at addr ffff8880754b4cfa by task syz-executor.0/6572 CPU: 1 PID: 6572 Comm: syz-executor.0 Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:306 print_report+0x107/0x1f0 mm/kasan/report.c:417 kasan_report+0xcd/0x100 mm/kasan/report.c:517 ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434 ntfs_ioctl_fitrim fs/ntfs3/file.c:40 [inline] ntfs_ioctl+0x2d4/0x3a0 fs/ntfs3/file.c:57 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f766f68c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f76703d3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f766f7abf80 RCX: 00007f766f68c0d9 RDX: 0000000020000080 RSI: 00000000c0185879 RDI: 0000000000000046 RBP: 00007f766f6e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2c329c0f R14: 00007f76703d3300 R15: 0000000000022000 Allocated by task 6572: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:968 [inline] __kmalloc+0xaf/0x190 mm/slab_common.c:981 kmalloc_array include/linux/slab.h:636 [inline] kcalloc include/linux/slab.h:667 [inline] wnd_init+0x1db/0x310 fs/ntfs3/bitmap.c:664 ntfs_fill_super+0x31b5/0x4370 fs/ntfs3/super.c:1118 get_tree_bdev+0x400/0x620 fs/super.c:1282 vfs_get_tree+0x88/0x270 fs/super.c:1489 do_new_mount+0x289/0xad0 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff8880754b4cf8 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 2 bytes inside of 8-byte region [ffff8880754b4cf8, ffff8880754b4d00) The buggy address belongs to the physical page: page:ffffea0001d52d00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x754b4 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffff888012841280 ffffea0001e9bd00 dead000000000002 raw: 0000000000000000 0000000080660066 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 5112, tgid 5112 (syz-executor.5), ts 252071630321, free_ts 252065670420 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0xbd/0x190 mm/slub.c:1851 allocate_slab+0x5e/0x3c0 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x25b/0x340 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc_node_track_caller+0x9c/0x190 mm/slab_common.c:988 kvasprintf+0xcc/0x180 lib/kasprintf.c:25 kobject_set_name_vargs+0x5d/0x110 lib/kobject.c:257 kobject_add_varg lib/kobject.c:352 [inline] kobject_init_and_add+0xc8/0x160 lib/kobject.c:441 netdev_queue_add_kobject net/core/net-sysfs.c:1666 [inline] netdev_queue_update_kobjects+0x20c/0x4c0 net/core/net-sysfs.c:1718 register_queue_kobjects net/core/net-sysfs.c:1779 [inline] netdev_register_kobject+0x263/0x310 net/core/net-sysfs.c:2019 register_netdevice+0x1043/0x17a0 net/core/dev.c:10045 macvlan_common_newlink+0x10b2/0x1870 drivers/net/macvlan.c:1512 rtnl_newlink_create net/core/rtnetlink.c:3407 [inline] __rtnl_newlink net/core/rtnetlink.c:3624 [inline] rtnl_newlink+0x14b3/0x2020 net/core/rtnetlink.c:3637 rtnetlink_rcv_msg+0x822/0xf10 net/core/rtnetlink.c:6141 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1446 [inline] free_pcp_prepare+0x751/0x780 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x19/0x4c0 mm/page_alloc.c:3464 discard_slab mm/slub.c:2098 [inline] __unfreeze_partials+0x1a5/0x1e0 mm/slub.c:2637 put_cpu_partial+0x106/0x170 mm/slub.c:2713 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x1e0/0x340 mm/slub.c:3491 kmalloc_trace+0x26/0x60 mm/slab_common.c:1062 kmalloc include/linux/slab.h:580 [inline] kzalloc include/linux/slab.h:720 [inline] ref_tracker_alloc+0x128/0x440 lib/ref_tracker.c:85 __netdev_tracker_alloc include/linux/netdevice.h:4020 [inline] netdev_hold include/linux/netdevice.h:4049 [inline] netdev_queue_add_kobject net/core/net-sysfs.c:1663 [inline] netdev_queue_update_kobjects+0x19e/0x4c0 net/core/net-sysfs.c:1718 register_queue_kobjects net/core/net-sysfs.c:1779 [inline] netdev_register_kobject+0x263/0x310 net/core/net-sysfs.c:2019 register_netdevice+0x1043/0x17a0 net/core/dev.c:10045 geneve_configure+0x6cd/0xa60 drivers/net/geneve.c:1432 geneve_newlink+0xfa/0x1a0 drivers/net/geneve.c:1683 rtnl_newlink_create net/core/rtnetlink.c:3407 [inline] __rtnl_newlink net/core/rtnetlink.c:3624 [inline] rtnl_newlink+0x14b3/0x2020 net/core/rtnetlink.c:3637 Memory state around the buggy address: ffff8880754b4b80: fc fc 05 fc fc fc fc 05 fc fc fc fc 00 fc fc fc ffff8880754b4c00: fc 00 fc fc fc fc 00 fc fc fc fc 05 fc fc fc fc >ffff8880754b4c80: 05 fc fc fc fc 05 fc fc fc fc 05 fc fc fc fc 02 ^ ffff8880754b4d00: fc fc fc fc fa fc fc fc fc fa fc fc fc fc fa fc ffff8880754b4d80: fc fc fc fa fc fc fc fc 05 fc fc fc fc 05 fc fc ==================================================================