loop4: detected capacity change from 0 to 4096 ntfs3: loop4: Different NTFS' sector size (4096) and media sector size (512) ================================================================== BUG: KASAN: use-after-free in ntfs_iget5+0x120/0x2acc fs/ntfs3/inode.c:526 Read of size 8 at addr ffff0000e9b42080 by task syz.4.9191/24729 CPU: 0 PID: 24729 Comm: syz.4.9191 Not tainted 5.15.182-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 print_address_description+0x78/0x30c mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xec/0x15c mm/kasan/report.c:451 __asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309 ntfs_iget5+0x120/0x2acc fs/ntfs3/inode.c:526 ntfs_fill_super+0x1824/0x2f2c fs/ntfs3/super.c:1004 get_tree_bdev+0x358/0x544 fs/super.c:1325 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1354 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3013 path_mount+0x5b4/0x1000 fs/namespace.c:3343 do_mount fs/namespace.c:3356 [inline] __do_sys_mount fs/namespace.c:3564 [inline] __se_sys_mount fs/namespace.c:3541 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3541 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 16724: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8c/0xcc mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x74/0x408 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x1e0/0x3e4 mm/slub.c:3233 reiserfs_alloc_inode+0x24/0xbc fs/reiserfs/super.c:642 alloc_inode fs/inode.c:261 [inline] iget5_locked+0xa4/0x224 fs/inode.c:1263 reiserfs_fill_super+0xdd4/0x1bb4 fs/reiserfs/super.c:2057 mount_bdev+0x264/0x358 fs/super.c:1400 get_super_block+0x44/0x58 fs/reiserfs/super.c:2608 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3013 path_mount+0x5b4/0x1000 fs/namespace.c:3343 do_mount fs/namespace.c:3356 [inline] __do_sys_mount fs/namespace.c:3564 [inline] __se_sys_mount fs/namespace.c:3541 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3541 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xcc/0x114 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x110/0x8f0 kernel/rcu/tree.c:3087 destroy_inode fs/inode.c:316 [inline] evict+0x748/0x810 fs/inode.c:662 iput_final fs/inode.c:1769 [inline] iput+0x6c4/0x77c fs/inode.c:1795 reiserfs_fill_super+0x1000/0x1bb4 fs/reiserfs/super.c:2082 mount_bdev+0x264/0x358 fs/super.c:1400 get_super_block+0x44/0x58 fs/reiserfs/super.c:2608 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3013 path_mount+0x5b4/0x1000 fs/namespace.c:3343 do_mount fs/namespace.c:3356 [inline] __do_sys_mount fs/namespace.c:3564 [inline] __se_sys_mount fs/namespace.c:3541 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3541 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Second to last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xcc/0x114 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x110/0x8f0 kernel/rcu/tree.c:3087 destroy_inode fs/inode.c:316 [inline] evict+0x748/0x810 fs/inode.c:662 iput_final fs/inode.c:1769 [inline] iput+0x6c4/0x77c fs/inode.c:1795 reiserfs_fill_super+0x1000/0x1bb4 fs/reiserfs/super.c:2082 mount_bdev+0x264/0x358 fs/super.c:1400 get_super_block+0x44/0x58 fs/reiserfs/super.c:2608 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3013 path_mount+0x5b4/0x1000 fs/namespace.c:3343 do_mount fs/namespace.c:3356 [inline] __do_sys_mount fs/namespace.c:3564 [inline] __se_sys_mount fs/namespace.c:3541 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3541 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000e9b41a80 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of 1568-byte region [ffff0000e9b41a80, ffff0000e9b420a0) The buggy address belongs to the page: page:00000000234fd22a refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000e9b45620 pfn:0x129b40 head:00000000234fd22a order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000c1c53001 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0b46900 raw: ffff0000e9b45620 0000000080130007 00000001ffffffff ffff0000c1c53001 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e9b41f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000e9b42000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000e9b42080: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000e9b42100: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000e9b42180: 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 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: 24729 Comm: syz.4.9191 Tainted: G B 5.15.182-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ntfs_iget5+0x12c/0x2acc fs/ntfs3/inode.c:526 lr : ntfs_iget5+0x120/0x2acc fs/ntfs3/inode.c:526 sp : ffff80001fbb7620 x29: ffff80001fbb7840 x28: ffff0000f0eca000 x27: ffff80001fbb77a0 x26: dfff800000000000 x25: ffff700003f76ef4 x24: ffff8000115e95a0 x23: ffff0000e9b42080 x22: 0000000000000002 x21: ffff0000e9b422b0 x20: 0000000000000010 x19: 0000000000000000 x18: 1fffe0003422398e x17: 1fffe0003422398e x16: ffff8000082d4b24 x15: ffff8000141eec20 x14: ffff0001a111cc80 x13: ffff0001a111cc7c x12: 0000000000080000 x11: 000000000003a233 x10: ffff8000242fa000 x9 : 0000000000000000 x8 : 0000000000000002 x7 : 0000000000000000 x6 : ffff800008244078 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008184528 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000001 Call trace: ntfs_iget5+0x12c/0x2acc fs/ntfs3/inode.c:526 ntfs_fill_super+0x1824/0x2f2c fs/ntfs3/super.c:1004 get_tree_bdev+0x358/0x544 fs/super.c:1325 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1354 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3013 path_mount+0x5b4/0x1000 fs/namespace.c:3343 do_mount fs/namespace.c:3356 [inline] __do_sys_mount fs/namespace.c:3564 [inline] __se_sys_mount fs/namespace.c:3541 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3541 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 97cd325b f94002e8 91004114 d343fe88 (38fa6908) ---[ end trace 162ee30991f2f1a9 ]--- ---------------- Code disassembly (best guess): 0: 97cd325b bl 0xffffffffff34c96c 4: f94002e8 ldr x8, [x23] 8: 91004114 add x20, x8, #0x10 c: d343fe88 lsr x8, x20, #3 * 10: 38fa6908 ldrsb w8, [x8, x26] <-- trapping instruction