loop0: detected capacity change from 0 to 8226 ntfs3: loop0: Mark volume as dirty due to NTFS errors ntfs3: loop0: Failed to load $Extend. ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434 Read of size 2 at addr ffff888020f1cad8 by task syz-executor174/3603 CPU: 0 PID: 3603 Comm: syz-executor174 Not tainted 6.1.0-rc1-syzkaller-00093-g6d36c728bc2e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report+0xcd/0x100 mm/kasan/report.c:495 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: 0033:0x7f56667704a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc336718d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f56667704a9 RDX: 0000000020000040 RSI: 00000000c0185879 RDI: 0000000000000003 RBP: 00007f566672fc70 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f566672fd00 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 2984: 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:955 [inline] __kmalloc+0xaf/0x1a0 mm/slab_common.c:968 kmalloc include/linux/slab.h:581 [inline] kernfs_fop_write_iter+0x164/0x500 fs/kernfs/file.c:307 call_write_iter include/linux/fs.h:2191 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7dc/0xc50 fs/read_write.c:584 ksys_write+0x177/0x2a0 fs/read_write.c:637 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 ffff888020f1cac8 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 8 bytes to the right of 8-byte region [ffff888020f1cac8, ffff888020f1cad0) The buggy address belongs to the physical page: page:ffffea000083c700 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888020f1c118 pfn:0x20f1c flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0000852e00 dead000000000003 ffff888012041280 raw: ffff888020f1c118 0000000080660063 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 1, tgid 1 (swapper/0), ts 7673204537, free_ts 7583082608 prep_new_page mm/page_alloc.c:2538 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4287 __alloc_pages+0x259/0x560 mm/page_alloc.c:5554 alloc_page_interleave+0x22/0x1c0 mm/mempolicy.c:2113 alloc_slab_page+0x70/0xf0 mm/slub.c:1794 allocate_slab+0x5e/0x4b0 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x252/0x310 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc_node_track_caller+0x9c/0x1a0 mm/slab_common.c:975 kstrdup+0x36/0x70 mm/util.c:61 __kernfs_new_node+0x99/0x730 fs/kernfs/dir.c:599 kernfs_new_node+0x95/0x160 fs/kernfs/dir.c:665 kernfs_create_link+0x9f/0x1f0 fs/kernfs/symlink.c:39 sysfs_do_create_link_sd+0x85/0x100 fs/sysfs/symlink.c:44 bus_add_device+0x1f7/0x480 drivers/base/bus.c:451 device_add+0x716/0xf90 drivers/base/core.c:3471 usb_new_device+0xbc2/0x18b0 drivers/usb/core/hub.c:2573 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1458 [inline] free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1508 free_unref_page_prepare mm/page_alloc.c:3386 [inline] free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3482 __vunmap+0x877/0x9e0 mm/vmalloc.c:2713 free_work+0x66/0x90 mm/vmalloc.c:97 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Memory state around the buggy address: ffff888020f1c980: fc 00 fc fc fc fc 02 fc fc fc fc 02 fc fc fc fc ffff888020f1ca00: fa fc fc fc fc fb fc fc fc fc fb fc fc fc fc 06 >ffff888020f1ca80: fc fc fc fc 06 fc fc fc fc fb fc fc fc fc fb fc ^ ffff888020f1cb00: fc fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc ffff888020f1cb80: fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc fc ==================================================================