loop2: detected capacity change from 0 to 4096 ntfs3: loop2: ino=1f, "file2" attr_set_size ====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc1-syzkaller-g3eddb108abe3 #0 Not tainted ------------------------------------------------------ syz.2.600/8317 is trying to acquire lock: ffff0000eeef4a70 (&ni->ni_lock#3){+.+.}-{3:3}, at: ntfs_set_state+0x1a4/0x5c0 fs/ntfs3/fsntfs.c:947 but task is already holding lock: ffff0000eeef2dc0 (&ni->file.run_lock){++++}-{3:3}, at: ntfs_truncate fs/ntfs3/file.c:457 [inline] ffff0000eeef2dc0 (&ni->file.run_lock){++++}-{3:3}, at: ntfs3_setattr+0x57c/0x95c fs/ntfs3/file.c:774 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ni->file.run_lock){++++}-{3:3}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 ntfs_truncate fs/ntfs3/file.c:457 [inline] ntfs3_setattr+0x57c/0x95c fs/ntfs3/file.c:774 notify_change+0x9f0/0xca0 fs/attr.c:503 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3395 [inline] do_open fs/namei.c:3778 [inline] path_openat+0x2494/0x2b14 fs/namei.c:3933 do_filp_open+0x1bc/0x3cc fs/namei.c:3960 do_sys_openat2+0x124/0x1b8 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1441 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 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->ni_lock/4){+.+.}-{3:3}: __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:1109 [inline] mi_read+0x26c/0x4d8 fs/ntfs3/record.c:148 ntfs_read_mft fs/ntfs3/inode.c:70 [inline] ntfs_iget5+0x358/0x2c0c fs/ntfs3/inode.c:537 ni_update_parent+0x6f0/0xac8 fs/ntfs3/frecord.c:3286 ni_write_inode+0xb64/0xda8 fs/ntfs3/frecord.c:3392 ntfs_sync_inode+0x2c/0x3c fs/ntfs3/inode.c:1016 ntfs_truncate fs/ntfs3/file.c:472 [inline] ntfs3_setattr+0x770/0x95c fs/ntfs3/file.c:774 notify_change+0x9f0/0xca0 fs/attr.c:503 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3395 [inline] do_open fs/namei.c:3778 [inline] path_openat+0x2494/0x2b14 fs/namei.c:3933 do_filp_open+0x1bc/0x3cc fs/namei.c:3960 do_sys_openat2+0x124/0x1b8 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1441 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 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#3){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x33f8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 __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 ntfs_set_state+0x1a4/0x5c0 fs/ntfs3/fsntfs.c:947 ntfs_bad_inode+0x88/0x9c fs/ntfs3/fsntfs.c:911 attr_set_size+0x2858/0x3468 fs/ntfs3/attrib.c:869 ntfs_truncate fs/ntfs3/file.c:458 [inline] ntfs3_setattr+0x608/0x95c fs/ntfs3/file.c:774 notify_change+0x9f0/0xca0 fs/attr.c:503 do_truncate fs/open.c:65 [inline] do_ftruncate+0x3e4/0x4cc fs/open.c:181 do_sys_ftruncate fs/open.c:199 [inline] __do_sys_ftruncate fs/open.c:207 [inline] __se_sys_ftruncate fs/open.c:205 [inline] __arm64_sys_ftruncate+0x94/0xec fs/open.c:205 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 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#3 --> &ni->ni_lock/4 --> &ni->file.run_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->file.run_lock); lock(&ni->ni_lock/4); lock(&ni->file.run_lock); lock(&ni->ni_lock#3); *** DEADLOCK *** 4 locks held by syz.2.600/8317: #0: ffff0000ecc84420 (sb_writers#12){.+.+}-{0:0}, at: do_ftruncate+0x1e4/0x4cc fs/open.c:178 #1: ffff0000eeef2fa8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff0000eeef2fa8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: do_truncate fs/open.c:63 [inline] #1: ffff0000eeef2fa8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: do_ftruncate+0x3d0/0x4cc fs/open.c:181 #2: ffff0000eeef2d10 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1109 [inline] #2: ffff0000eeef2d10 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_truncate fs/ntfs3/file.c:455 [inline] #2: ffff0000eeef2d10 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs3_setattr+0x570/0x95c fs/ntfs3/file.c:774 #3: ffff0000eeef2dc0 (&ni->file.run_lock){++++}-{3:3}, at: ntfs_truncate fs/ntfs3/file.c:457 [inline] #3: ffff0000eeef2dc0 (&ni->file.run_lock){++++}-{3:3}, at: ntfs3_setattr+0x57c/0x95c fs/ntfs3/file.c:774 stack backtrace: CPU: 0 UID: 0 PID: 8317 Comm: syz.2.600 Not tainted 6.12.0-rc1-syzkaller-g3eddb108abe3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:319 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:326 __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x154/0x1c0 kernel/locking/lockdep.c:2074 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x33f8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 __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 ntfs_set_state+0x1a4/0x5c0 fs/ntfs3/fsntfs.c:947 ntfs_bad_inode+0x88/0x9c fs/ntfs3/fsntfs.c:911 attr_set_size+0x2858/0x3468 fs/ntfs3/attrib.c:869 ntfs_truncate fs/ntfs3/file.c:458 [inline] ntfs3_setattr+0x608/0x95c fs/ntfs3/file.c:774 notify_change+0x9f0/0xca0 fs/attr.c:503 do_truncate fs/open.c:65 [inline] do_ftruncate+0x3e4/0x4cc fs/open.c:181 do_sys_ftruncate fs/open.c:199 [inline] __do_sys_ftruncate fs/open.c:207 [inline] __se_sys_ftruncate fs/open.c:205 [inline] __arm64_sys_ftruncate+0x94/0xec fs/open.c:205 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 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 ntfs3: loop2: Mark volume as dirty due to NTFS errors