loop3: detected capacity change from 0 to 8226 ================================================================== BUG: KASAN: use-after-free in run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 Read of size 1 at addr ffff88807eff1900 by task syz-executor.3/17659 CPU: 1 PID: 17659 Comm: syz-executor.3 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #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 run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 run_unpack_ex+0xcc/0x870 fs/ntfs3/run.c:1057 ntfs_read_mft fs/ntfs3/inode.c:368 [inline] ntfs_iget5+0x1cfa/0x36f0 fs/ntfs3/inode.c:501 ntfs_fill_super+0x2f4c/0x42a0 fs/ntfs3/super.c:1095 get_tree_bdev+0x400/0x620 fs/super.c:1323 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x289/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568 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: 0033:0x7fca2188cada Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007fca22642f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000bc0 RCX: 00007fca2188cada RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fca22642fe0 RBP: 00007fca22643020 R08: 00007fca22643020 R09: 0000000020000000 R10: 0000000000000002 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fca22642fe0 R15: 0000000020003580 Allocated by task 17417: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] kmem_cache_alloc_bulk+0x42d/0x570 mm/slub.c:3854 __io_alloc_req_refill+0x242/0x48f io_uring/io_uring.c:930 io_alloc_req_refill io_uring/io_uring.h:340 [inline] io_submit_sqes+0xc8e/0x1b90 io_uring/io_uring.c:2268 __do_sys_io_uring_enter io_uring/io_uring.c:3215 [inline] __se_sys_io_uring_enter+0x2f8/0x2090 io_uring/io_uring.c:3147 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 Freed by task 9: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:511 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x94/0x1d0 mm/slub.c:3683 io_req_caches_free+0x1a0/0x230 io_uring/io_uring.c:2571 io_ring_exit_work+0x26e/0x738 io_uring/io_uring.c:2752 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 The buggy address belongs to the object at ffff88807eff18c0 which belongs to the cache io_kiocb of size 216 The buggy address is located 64 bytes inside of 216-byte region [ffff88807eff18c0, ffff88807eff1998) The buggy address belongs to the physical page: page:ffffea0001fbfc40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7eff1 memcg:ffff88808232fd01 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff88801c41f780 raw: 0000000000000000 00000000000c000c 00000001ffffffff ffff88808232fd01 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 17417, tgid 17416 (syz-executor.3), ts 282438791601, free_ts 261401286184 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_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 kmem_cache_alloc_bulk+0x1e1/0x570 mm/slub.c:3830 __io_alloc_req_refill+0x242/0x48f io_uring/io_uring.c:930 io_alloc_req_refill io_uring/io_uring.h:340 [inline] io_submit_sqes+0xc8e/0x1b90 io_uring/io_uring.c:2268 __do_sys_io_uring_enter io_uring/io_uring.c:3215 [inline] __se_sys_io_uring_enter+0x2f8/0x2090 io_uring/io_uring.c:3147 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 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 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x169/0x180 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:737 [inline] kmem_cache_alloc_bulk+0x42d/0x570 mm/slub.c:3854 __io_alloc_req_refill+0x242/0x48f io_uring/io_uring.c:930 io_alloc_req_refill io_uring/io_uring.h:340 [inline] io_submit_sqes+0xc8e/0x1b90 io_uring/io_uring.c:2268 __do_sys_io_uring_enter io_uring/io_uring.c:3215 [inline] __se_sys_io_uring_enter+0x2f8/0x2090 io_uring/io_uring.c:3147 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 Memory state around the buggy address: ffff88807eff1800: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc ffff88807eff1880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff88807eff1900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88807eff1980: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807eff1a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================