loop2: detected capacity change from 0 to 4096 ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_iget5+0x120/0x2be0 fs/ntfs3/inode.c:526 Read of size 8 at addr ffff0000ddf2ff60 by task syz.2.2007/8578 CPU: 0 PID: 8578 Comm: syz.2.2007 Not tainted 5.15.176-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309 ntfs_iget5+0x120/0x2be0 fs/ntfs3/inode.c:526 ntfs_fill_super+0x199c/0x33b0 fs/ntfs3/super.c:1004 get_tree_bdev+0x360/0x54c 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+0x278/0x8fc fs/namespace.c:3012 path_mount+0x594/0x101c fs/namespace.c:3342 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount fs/namespace.c:3540 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3540 __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+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 7701: 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+0x74/0x3f4 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x1dc/0x45c mm/slub.c:3233 ocfs2_alloc_inode+0x24/0x70 fs/ocfs2/super.c:550 alloc_inode fs/inode.c:236 [inline] iget5_locked+0xa4/0x230 fs/inode.c:1238 ocfs2_iget+0x278/0x1e94 fs/ocfs2/inode.c:147 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:142 [inline] ocfs2_get_system_file_inode+0x304/0x6b8 fs/ocfs2/sysfile.c:112 ocfs2_init_global_system_inodes+0x2bc/0x618 fs/ocfs2/super.c:458 ocfs2_initialize_super fs/ocfs2/super.c:2276 [inline] ocfs2_fill_super+0x3a74/0x4abc fs/ocfs2/super.c:995 mount_bdev+0x274/0x370 fs/super.c:1400 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x278/0x8fc fs/namespace.c:3012 path_mount+0x594/0x101c fs/namespace.c:3342 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount fs/namespace.c:3540 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3540 __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+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 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+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3087 destroy_inode fs/inode.c:291 [inline] evict+0x7ac/0x894 fs/inode.c:637 iput_final fs/inode.c:1744 [inline] iput+0x744/0x824 fs/inode.c:1770 ocfs2_release_system_inodes+0x208/0x444 fs/ocfs2/super.c:514 ocfs2_dismount_volume+0x36c/0x904 fs/ocfs2/super.c:1911 ocfs2_put_super+0xec/0x350 fs/ocfs2/super.c:1610 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 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+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3087 destroy_inode fs/inode.c:291 [inline] evict+0x7ac/0x894 fs/inode.c:637 iput_final fs/inode.c:1744 [inline] iput+0x744/0x824 fs/inode.c:1770 ocfs2_release_system_inodes+0x250/0x444 fs/ocfs2/super.c:521 ocfs2_dismount_volume+0x36c/0x904 fs/ocfs2/super.c:1911 ocfs2_put_super+0xec/0x350 fs/ocfs2/super.c:1610 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 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 ffff0000ddf2e3c0 which belongs to the cache ocfs2_inode_cache of size 3520 The buggy address is located 3552 bytes to the right of 3520-byte region [ffff0000ddf2e3c0, ffff0000ddf2f180) The buggy address belongs to the page: page:000000001d712952 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000ddf2c740 pfn:0x11df28 head:000000001d712952 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000d46a7b01 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc0003a1aa00 0000000200000002 ffff0000c6906300 raw: ffff0000ddf2c740 0000000080080000 00000001ffffffff ffff0000d46a7b01 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000ddf2fe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000ddf2fe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000ddf2ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000ddf2ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000ddf30000: 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: 8578 Comm: syz.2.2007 Tainted: G B 5.15.176-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ntfs_iget5+0x12c/0x2be0 fs/ntfs3/inode.c:526 lr : ntfs_iget5+0x120/0x2be0 fs/ntfs3/inode.c:526 sp : ffff8000208b7560 x29: ffff8000208b77a0 x28: ffff0000cf458000 x27: ffff800011f90460 x26: dfff800000000000 x25: ffff8000208b7970 x24: ffff700004116ee0 x23: 0000000000000002 x22: 0000000000000002 x21: ffff0000ddf30190 x20: 0000000000000010 x19: ffff8000208b7700 x18: 1fffe0003682ef8e x17: 1fffe0003682ef8e x16: ffff800011b4b268 x15: ffff800014bffac0 x14: ffff0001b4177c80 x13: ffff0001b4177c7c x12: 0000000000080000 x11: 000000000007ffff x10: ffff8000236ba000 x9 : 0000000000000000 x8 : 0000000000000002 x7 : 0000000000000000 x6 : ffff80000826abdc x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000819c3ec x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000001 Call trace: ntfs_iget5+0x12c/0x2be0 fs/ntfs3/inode.c:526 ntfs_fill_super+0x199c/0x33b0 fs/ntfs3/super.c:1004 get_tree_bdev+0x360/0x54c 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+0x278/0x8fc fs/namespace.c:3012 path_mount+0x594/0x101c fs/namespace.c:3342 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount fs/namespace.c:3540 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3540 __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+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 97c9944b f9400288 91004114 d343fe88 (38fa6908) ---[ end trace 3ff278b418f2afab ]--- ---------------- Code disassembly (best guess): 0: 97c9944b bl 0xffffffffff26512c 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