loop2: detected capacity change from 0 to 4096 ====================================================== WARNING: possible circular locking dependency detected 6.8.0-rc7-syzkaller-g707081b61156 #0 Not tainted ------------------------------------------------------ syz-executor.2/9423 is trying to acquire lock: ffff0000f9453c00 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1121 [inline] ffff0000f9453c00 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fallocate+0x468/0xe9c fs/ntfs3/file.c:501 but task is already holding lock: ffff0000f9454040 (mapping.invalidate_lock#7){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline] ffff0000f9454040 (mapping.invalidate_lock#7){++++}-{3:3}, at: ntfs_fallocate+0x354/0xe9c fs/ntfs3/file.c:486 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (mapping.invalidate_lock#7){++++}-{3:3}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:859 [inline] filemap_fault+0x504/0xff4 mm/filemap.c:3237 __do_fault+0x11c/0x374 mm/memory.c:4396 do_read_fault mm/memory.c:4758 [inline] do_fault mm/memory.c:4888 [inline] do_pte_missing mm/memory.c:3745 [inline] handle_pte_fault mm/memory.c:5164 [inline] __handle_mm_fault mm/memory.c:5305 [inline] handle_mm_fault+0x3a80/0x546c mm/memory.c:5470 faultin_page mm/gup.c:958 [inline] __get_user_pages+0x3e0/0xa24 mm/gup.c:1241 populate_vma_page_range+0x254/0x328 mm/gup.c:1679 __mm_populate+0x240/0x3d8 mm/gup.c:1788 mm_populate include/linux/mm.h:3391 [inline] vm_mmap_pgoff+0x2bc/0x3d4 mm/util.c:561 ksys_mmap_pgoff+0x3c8/0x5b0 mm/mmap.c:1428 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline] __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline] __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc4/0x124 mm/memory.c:6080 _copy_to_user include/linux/uaccess.h:165 [inline] copy_to_user include/linux/uaccess.h:191 [inline] fiemap_fill_next_extent+0x1b4/0x424 fs/ioctl.c:145 ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:2044 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1206 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1958/0x2704 fs/ioctl.c:811 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 -> #1 (&ni->file.run_lock){.+.+}-{3:3}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1526 ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1961 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1206 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1958/0x2704 fs/ioctl.c:811 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 -> #0 (&ni->ni_lock/4){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x3384/0x763c kernel/locking/lockdep.c:5137 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:608 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 ni_lock fs/ntfs3/ntfs_fs.h:1121 [inline] ntfs_fallocate+0x468/0xe9c fs/ntfs3/file.c:501 vfs_fallocate+0x480/0x5bc fs/open.c:328 ioctl_preallocate+0x278/0x324 fs/ioctl.c:291 do_vfs_ioctl+0x1ae4/0x2704 fs/ioctl.c:850 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 other info that might help us debug this: Chain exists of: &ni->ni_lock/4 --> &mm->mmap_lock --> mapping.invalidate_lock#7 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#7); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#7); lock(&ni->ni_lock/4); *** DEADLOCK *** 3 locks held by syz-executor.2/9423: #0: ffff0000ef266420 (sb_writers#31){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2794 [inline] #0: ffff0000ef266420 (sb_writers#31){.+.+}-{0:0}, at: vfs_fallocate+0x40c/0x5bc fs/open.c:327 #1: ffff0000f9453ea0 (&sb->s_type->i_mutex_key#34){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff0000f9453ea0 (&sb->s_type->i_mutex_key#34){+.+.}-{3:3}, at: ntfs_fallocate+0x2a0/0xe9c fs/ntfs3/file.c:472 #2: ffff0000f9454040 (mapping.invalidate_lock#7){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline] #2: ffff0000f9454040 (mapping.invalidate_lock#7){++++}-{3:3}, at: ntfs_fallocate+0x354/0xe9c fs/ntfs3/file.c:486 stack backtrace: CPU: 0 PID: 9423 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2060 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x3384/0x763c kernel/locking/lockdep.c:5137 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:608 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 ni_lock fs/ntfs3/ntfs_fs.h:1121 [inline] ntfs_fallocate+0x468/0xe9c fs/ntfs3/file.c:501 vfs_fallocate+0x480/0x5bc fs/open.c:328 ioctl_preallocate+0x278/0x324 fs/ioctl.c:291 do_vfs_ioctl+0x1ae4/0x2704 fs/ioctl.c:850 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598