EXT4-fs: Ignoring removed orlov option EXT4-fs: Ignoring removed nomblk_io_submit option ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.84/5702 is trying to acquire lock: ffff0000dcce9638 (&sb->s_type->i_mutex_key#10/1){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] ffff0000dcce9638 (&sb->s_type->i_mutex_key#10/1){+.+.}-{4:4}, at: ext4_xattr_inode_create fs/ext4/xattr.c:1518 [inline] ffff0000dcce9638 (&sb->s_type->i_mutex_key#10/1){+.+.}-{4:4}, at: ext4_xattr_inode_lookup_create+0xfd8/0x12b8 fs/ext4/xattr.c:1600 but task is already holding lock: ffff0000ea1e7290 (&ei->i_data_sem/3){++++}-{4:4}, at: ext4_truncate+0x754/0x1174 fs/ext4/inode.c:4663 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem/3){++++}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1625 ext4_update_i_disksize fs/ext4/ext4.h:3482 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1456 [inline] ext4_xattr_inode_lookup_create+0xe1c/0x12b8 fs/ext4/xattr.c:1606 ext4_xattr_ibody_set+0x1c8/0x4bc fs/ext4/xattr.c:2270 ext4_xattr_set_handle+0x83c/0xe00 fs/ext4/xattr.c:2447 ext4_xattr_set+0x1f8/0x2c4 fs/ext4/xattr.c:2561 ext4_xattr_trusted_set+0x4c/0x64 fs/ext4/xattr_trusted.c:38 __vfs_setxattr+0x130/0x17c fs/xattr.c:218 __vfs_setxattr_noperm+0x120/0x5c4 fs/xattr.c:252 __vfs_setxattr_locked+0x114/0x248 fs/xattr.c:313 vfs_setxattr+0x150/0x2e0 fs/xattr.c:339 do_setxattr+0xf8/0x190 fs/xattr.c:654 filename_setxattr+0x134/0x1f8 fs/xattr.c:682 path_setxattrat+0x200/0x2a8 fs/xattr.c:726 __do_sys_setxattr fs/xattr.c:760 [inline] __se_sys_setxattr fs/xattr.c:756 [inline] __arm64_sys_setxattr+0xc0/0xdc fs/xattr.c:756 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 -> #0 (&sb->s_type->i_mutex_key#10/1){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x1780/0x2f44 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x368 kernel/locking/lockdep.c:5868 down_write+0x50/0xc0 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1518 [inline] ext4_xattr_inode_lookup_create+0xfd8/0x12b8 fs/ext4/xattr.c:1600 ext4_xattr_block_set+0x1c0/0x2188 fs/ext4/xattr.c:1920 ext4_xattr_move_to_block fs/ext4/xattr.c:2671 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2746 [inline] ext4_expand_extra_isize_ea+0xb18/0x13a0 fs/ext4/xattr.c:2834 __ext4_expand_extra_isize+0x29c/0x370 fs/ext4/inode.c:6434 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6477 [inline] __ext4_mark_inode_dirty+0x3a4/0x810 fs/ext4/inode.c:6555 ext4_ext_truncate+0x94/0x278 fs/ext4/extents.c:4557 ext4_truncate+0x910/0x1174 fs/ext4/inode.c:4667 ext4_evict_inode+0x848/0xfc4 fs/ext4/inode.c:274 evict+0x4b8/0x740 fs/inode.c:841 iput_final fs/inode.c:1960 [inline] iput+0x858/0xb90 fs/inode.c:2009 dentry_unlink_inode+0x3a8/0x484 fs/dcache.c:476 __dentry_kill+0x170/0x5fc fs/dcache.c:718 finish_dput+0xfc/0x488 fs/dcache.c:927 dput+0x1b0/0x1b4 fs/dcache.c:976 end_renaming+0xa0/0xd0 fs/namei.c:4124 filename_renameat2+0x678/0x730 fs/namei.c:6174 __do_sys_renameat2 fs/namei.c:6201 [inline] __se_sys_renameat2 fs/namei.c:6196 [inline] __arm64_sys_renameat2+0xe4/0x114 fs/namei.c:6196 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/3); lock(&sb->s_type->i_mutex_key#10/1); lock(&ei->i_data_sem/3); lock(&sb->s_type->i_mutex_key#10/1); *** DEADLOCK *** 4 locks held by syz.0.84/5702: #0: ffff0000c55ea410 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:493 #1: ffff0000c55ea600 (sb_internal){.+.+}-{0:0}, at: percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] #1: ffff0000c55ea600 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs/super.h:19 [inline] #1: ffff0000c55ea600 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs/super.h:177 [inline] #1: ffff0000c55ea600 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x360/0xfc4 fs/ext4/inode.c:228 #2: ffff0000ea1e7290 (&ei->i_data_sem/3){++++}-{4:4}, at: ext4_truncate+0x754/0x1174 fs/ext4/inode.c:4663 #3: ffff0000ea1e7140 (&ei->xattr_sem){++++}-{4:4}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:164 [inline] #3: ffff0000ea1e7140 (&ei->xattr_sem){++++}-{4:4}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6474 [inline] #3: ffff0000ea1e7140 (&ei->xattr_sem){++++}-{4:4}, at: __ext4_mark_inode_dirty+0x33c/0x810 fs/ext4/inode.c:6555 stack backtrace: CPU: 0 UID: 0 PID: 5702 Comm: syz.0.84 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x328/0x330 kernel/locking/lockdep.c:2043 check_noncircular+0x158/0x174 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x1780/0x2f44 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x368 kernel/locking/lockdep.c:5868 down_write+0x50/0xc0 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1518 [inline] ext4_xattr_inode_lookup_create+0xfd8/0x12b8 fs/ext4/xattr.c:1600 ext4_xattr_block_set+0x1c0/0x2188 fs/ext4/xattr.c:1920 ext4_xattr_move_to_block fs/ext4/xattr.c:2671 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2746 [inline] ext4_expand_extra_isize_ea+0xb18/0x13a0 fs/ext4/xattr.c:2834 __ext4_expand_extra_isize+0x29c/0x370 fs/ext4/inode.c:6434 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6477 [inline] __ext4_mark_inode_dirty+0x3a4/0x810 fs/ext4/inode.c:6555 ext4_ext_truncate+0x94/0x278 fs/ext4/extents.c:4557 ext4_truncate+0x910/0x1174 fs/ext4/inode.c:4667 ext4_evict_inode+0x848/0xfc4 fs/ext4/inode.c:274 evict+0x4b8/0x740 fs/inode.c:841 iput_final fs/inode.c:1960 [inline] iput+0x858/0xb90 fs/inode.c:2009 dentry_unlink_inode+0x3a8/0x484 fs/dcache.c:476 __dentry_kill+0x170/0x5fc fs/dcache.c:718 finish_dput+0xfc/0x488 fs/dcache.c:927 dput+0x1b0/0x1b4 fs/dcache.c:976 end_renaming+0xa0/0xd0 fs/namei.c:4124 filename_renameat2+0x678/0x730 fs/namei.c:6174 __do_sys_renameat2 fs/namei.c:6201 [inline] __se_sys_renameat2 fs/namei.c:6196 [inline] __arm64_sys_renameat2+0xe4/0x114 fs/namei.c:6196 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594