================================================================== BUG: KASAN: slab-out-of-bounds in run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 Read of size 1 at addr ffff88807cc79e48 by task syz-executor.0/14353 CPU: 1 PID: 14353 Comm: syz-executor.0 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x65/0x4b0 mm/kasan/report.c:317 print_report+0x108/0x1f0 mm/kasan/report.c:433 kasan_report+0xc3/0xf0 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+0x22fc/0x42a0 fs/ntfs3/super.c:1009 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: 0033:0x7ff4bd28cada 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:00007ff4be425f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000bc0 RCX: 00007ff4bd28cada RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ff4be425fe0 RBP: 00007ff4be426020 R08: 00007ff4be426020 R09: 0000000020000000 R10: 0000000000000002 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007ff4be425fe0 R15: 0000000020000180 Allocated by task 14353: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc+0xcd/0x100 mm/kasan/common.c:516 kasan_kmalloc include/linux/kasan.h:234 [inline] __kmalloc+0x226/0x370 mm/slub.c:4429 kmalloc include/linux/slab.h:605 [inline] mi_init+0x72/0xe0 fs/ntfs3/record.c:105 ntfs_read_mft fs/ntfs3/inode.c:53 [inline] ntfs_iget5+0x309/0x36f0 fs/ntfs3/inode.c:501 ntfs_fill_super+0x22fc/0x42a0 fs/ntfs3/super.c:1009 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 Last potentially related work creation: kasan_save_stack+0x2b/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:348 call_rcu+0x163/0x970 kernel/rcu/tree.c:2796 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 ffff88807cc79800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 584 bytes to the right of 1024-byte region [ffff88807cc79800, ffff88807cc79c00) The buggy address belongs to the physical page: page:ffffea0001f31e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7cc78 head:ffffea0001f31e00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000001 ffff888012041dc0 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3314, tgid 3314 (dhcpcd-run-hook), ts 20523743185, free_ts 20523582766 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0x70/0xf0 mm/slub.c:1829 allocate_slab+0x5e/0x520 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x3ee/0xc40 mm/slub.c:3036 __slab_alloc mm/slub.c:3123 [inline] slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] __kmalloc+0x2bd/0x370 mm/slub.c:4425 kmalloc include/linux/slab.h:605 [inline] load_elf_phdrs+0x158/0x260 fs/binfmt_elf.c:481 load_elf_binary+0xac6/0x2840 fs/binfmt_elf.c:961 search_binary_handler fs/exec.c:1725 [inline] exec_binprm fs/exec.c:1766 [inline] bprm_execve+0x8dc/0x1590 fs/exec.c:1835 do_execveat_common+0x598/0x750 fs/exec.c:1940 do_execve fs/exec.c:2014 [inline] __do_sys_execve fs/exec.c:2090 [inline] __se_sys_execve fs/exec.c:2085 [inline] __x64_sys_execve+0x8e/0xa0 fs/exec.c:2085 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:1449 [inline] free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3476 free_slab mm/slub.c:2073 [inline] discard_slab mm/slub.c:2079 [inline] __unfreeze_partials+0x1ab/0x200 mm/slub.c:2553 put_cpu_partial+0x106/0x170 mm/slub.c:2629 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:447 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] slab_alloc mm/slub.c:3256 [inline] __kmalloc+0x1bd/0x370 mm/slub.c:4425 kmalloc include/linux/slab.h:605 [inline] tomoyo_realpath_from_path+0xcd/0x5f0 security/tomoyo/realpath.c:251 tomoyo_realpath_nofollow+0xa7/0xf0 security/tomoyo/realpath.c:304 tomoyo_find_next_domain+0x25c/0x1d80 security/tomoyo/domain.c:727 tomoyo_bprm_check_security+0xe3/0x130 security/tomoyo/tomoyo.c:101 security_bprm_check+0x50/0xb0 security/security.c:869 search_binary_handler fs/exec.c:1713 [inline] exec_binprm fs/exec.c:1766 [inline] bprm_execve+0x817/0x1590 fs/exec.c:1835 do_execveat_common+0x598/0x750 fs/exec.c:1940 do_execve fs/exec.c:2014 [inline] __do_sys_execve fs/exec.c:2090 [inline] __se_sys_execve fs/exec.c:2085 [inline] __x64_sys_execve+0x8e/0xa0 fs/exec.c:2085 Memory state around the buggy address: ffff88807cc79d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807cc79d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807cc79e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807cc79e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807cc79f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================