loop1: detected capacity change from 0 to 4096 ================================================================== BUG: KASAN: use-after-free in ntfs_iget5+0x120/0x2be8 fs/ntfs3/inode.c:526 Read of size 8 at addr ffff0000f8910600 by task syz.1.3661/12234 CPU: 0 PID: 12234 Comm: syz.1.3661 Not tainted 6.1.110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 ntfs_iget5+0x120/0x2be8 fs/ntfs3/inode.c:526 ntfs_fill_super+0x19f0/0x3454 fs/ntfs3/super.c:1009 get_tree_bdev+0x360/0x54c fs/super.c:1366 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1359 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3051 path_mount+0x590/0xe5c fs/namespace.c:3381 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount fs/namespace.c:3579 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 7430: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x458 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x1ac/0x2f8 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3198 [inline] reiserfs_alloc_inode+0x2c/0xc4 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:261 [inline] iget5_locked+0xa4/0x234 fs/inode.c:1320 reiserfs_fill_super+0x1088/0x2028 fs/reiserfs/super.c:2053 mount_bdev+0x274/0x370 fs/super.c:1443 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3051 path_mount+0x590/0xe5c fs/namespace.c:3381 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount fs/namespace.c:3579 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2845 destroy_inode fs/inode.c:316 [inline] evict+0x7ac/0x894 fs/inode.c:716 iput_final fs/inode.c:1826 [inline] iput+0x7c0/0x8a4 fs/inode.c:1852 reiserfs_fill_super+0x12b8/0x2028 fs/reiserfs/super.c:2078 mount_bdev+0x274/0x370 fs/super.c:1443 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3051 path_mount+0x590/0xe5c fs/namespace.c:3381 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount fs/namespace.c:3579 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000f8910000 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of 1568-byte region [ffff0000f8910000, ffff0000f8910620) The buggy address belongs to the physical page: page:00000000418f8fda refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000f8910d40 pfn:0x138910 head:00000000418f8fda order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000cd0ee201 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0ba2c00 raw: ffff0000f8910d40 0000000080130011 00000001ffffffff ffff0000cd0ee201 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000f8910500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000f8910580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000f8910600: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000f8910680: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000f8910700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== Unable to handle kernel paging request at virtual address dfff800000000002 KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000002] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 12234 Comm: syz.1.3661 Tainted: G B 6.1.110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ntfs_iget5+0x12c/0x2be8 fs/ntfs3/inode.c:526 lr : ntfs_iget5+0x120/0x2be8 fs/ntfs3/inode.c:526 sp : ffff800022cf75a0 x29: ffff800022cf77e0 x28: ffff0000fac5c000 x27: ffff8000126f5480 x26: dfff800000000000 x25: ffff800022cf79b0 x24: ffff70000459eee8 x23: 0000000000000002 x22: 0000000000000002 x21: ffff0000f8910830 x20: 0000000000000010 x19: ffff800022cf7740 x18: 1fffe0003679f176 x17: 0000000000000000 x16: ffff800012294c9c x15: 0000000000000002 x14: 0000000000000000 x13: 205d343332323154 x12: 0000000000040000 x11: 000000000003ffff x10: ffff800021ffd000 x9 : 0000000000000000 x8 : 0000000000000002 x7 : 545b5d3935333635 x6 : ffff800008348948 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000081ae3ec x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: ntfs_iget5+0x12c/0x2be8 fs/ntfs3/inode.c:526 ntfs_fill_super+0x19f0/0x3454 fs/ntfs3/super.c:1009 get_tree_bdev+0x360/0x54c fs/super.c:1366 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1359 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3051 path_mount+0x590/0xe5c fs/namespace.c:3381 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount fs/namespace.c:3579 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 97cafce8 f9400288 91004114 d343fe88 (38fa6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97cafce8 bl 0xffffffffff2bf3a0 4: f9400288 ldr x8, [x20] 8: 91004114 add x20, x8, #0x10 c: d343fe88 lsr x8, x20, #3 * 10: 38fa6908 ldrsb w8, [x8, x26] <-- trapping instruction