loop2: detected capacity change from 0 to 4096 ntfs3: loop2: Different NTFS' sector size (4096) and media sector size (512) ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434 Read of size 2 at addr ffff88806929e5f2 by task syz-executor.2/17884 CPU: 0 PID: 17884 Comm: syz-executor.2 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #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: 0033:0x7f451428c0d9 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:00007f45150d9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f45143abf80 RCX: 00007f451428c0d9 RDX: 0000000020000080 RSI: 00000000c0185879 RDI: 0000000000000008 RBP: 00007f45142e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffabcc6d8f R14: 00007f45150d9300 R15: 0000000000022000 Allocated by task 17884: 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 ffff88806929e5f0 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 2 bytes inside of 8-byte region [ffff88806929e5f0, ffff88806929e5f8) The buggy address belongs to the physical page: page:ffffea0001a4a780 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6929e flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffff888012841280 ffffea0000750c40 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 5107, tgid 5107 (syz-executor.1), ts 192159193278, free_ts 192159042929 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 kstrdup+0x36/0x70 mm/util.c:61 __kernfs_new_node+0x99/0x730 fs/kernfs/dir.c:610 kernfs_new_node fs/kernfs/dir.c:676 [inline] kernfs_create_dir_ns+0x90/0x220 fs/kernfs/dir.c:1032 sysfs_create_dir_ns+0x159/0x2f0 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6dd/0xd10 lib/kobject.c:223 kobject_add_varg lib/kobject.c:358 [inline] kobject_add+0x138/0x200 lib/kobject.c:410 device_add+0x47d/0xf90 drivers/base/core.c:3414 netdev_register_kobject+0x178/0x310 net/core/net-sysfs.c:2015 register_netdevice+0x1043/0x17a0 net/core/dev.c:10045 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 __dev_alloc_name net/core/dev.c:1079 [inline] dev_alloc_name_ns+0x759/0x860 net/core/dev.c:1101 dev_get_valid_name net/core/dev.c:1136 [inline] register_netdevice+0x449/0x17a0 net/core/dev.c:9964 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:308 [inline] nsim_create+0x382/0x450 drivers/net/netdevsim/netdev.c:357 __nsim_dev_port_add+0x6e7/0xb70 drivers/net/netdevsim/dev.c:1393 nsim_dev_port_add_all+0x3c/0x100 drivers/net/netdevsim/dev.c:1449 nsim_drv_probe+0x861/0xc10 drivers/net/netdevsim/dev.c:1603 call_driver_probe+0x96/0x250 really_probe+0x24c/0x9f0 drivers/base/dd.c:639 __driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:778 driver_probe_device+0x50/0x240 drivers/base/dd.c:808 __device_attach_driver+0x272/0x3c0 drivers/base/dd.c:936 bus_for_each_drv+0x16a/0x1f0 drivers/base/bus.c:427 __device_attach+0x346/0x570 drivers/base/dd.c:1008 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 Memory state around the buggy address: ffff88806929e480: fc 06 fc fc fc fc fb fc fc fc fc 05 fc fc fc fc ffff88806929e500: fb fc fc fc fc fa fc fc fc fc fb fc fc fc fc fb >ffff88806929e580: fc fc fc fc fb fc fc fc fc fb fc fc fc fc 02 fc ^ ffff88806929e600: fc fc fc fa fc fc fc fc fa fc fc fc fc fb fc fc ffff88806929e680: fc fc fa fc fc fc fc fa fc fc fc fc fa fc fc fc ==================================================================