====================================================== WARNING: possible circular locking dependency detected 6.1.103-syzkaller #0 Not tainted ------------------------------------------------------ syz.3.312/5534 is trying to acquire lock: ffff888059eb0400 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] ffff888059eb0400 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x425/0x5e0 fs/ext4/xattr.c:425 but task is already holding lock: ffff888059eb1698 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x999/0x1290 fs/ext4/inode.c:4272 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem/3){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 ext4_update_i_disksize fs/ext4/ext4.h:3377 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1403 [inline] ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1551 [inline] ext4_xattr_set_entry+0x351a/0x4040 fs/ext4/xattr.c:1675 ext4_xattr_ibody_set+0x11d/0x330 fs/ext4/xattr.c:2243 ext4_xattr_set_handle+0xc72/0x1560 fs/ext4/xattr.c:2400 ext4_xattr_set+0x231/0x3d0 fs/ext4/xattr.c:2514 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x250/0x2b0 fs/xattr.c:617 path_setxattr+0x1bc/0x2a0 fs/xattr.c:636 __do_sys_setxattr fs/xattr.c:652 [inline] __se_sys_setxattr fs/xattr.c:648 [inline] __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:648 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ext4_xattr_inode_iget+0x425/0x5e0 fs/ext4/xattr.c:425 ext4_xattr_inode_get+0x17d/0x9a0 fs/ext4/xattr.c:485 ext4_xattr_move_to_block fs/ext4/xattr.c:2596 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2698 [inline] ext4_expand_extra_isize_ea+0xe70/0x1bb0 fs/ext4/xattr.c:2790 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5919 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5962 [inline] __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6040 ext4_ext_truncate+0x97/0x360 fs/ext4/extents.c:4430 ext4_truncate+0xa1d/0x1290 fs/ext4/inode.c:4277 ext4_evict_inode+0xb68/0x1150 fs/ext4/inode.c:286 evict+0x2a4/0x620 fs/inode.c:666 __dentry_kill+0x436/0x650 fs/dcache.c:611 dentry_kill+0xbb/0x290 dput+0xfb/0x1d0 fs/dcache.c:918 do_renameat2+0xded/0x1440 fs/namei.c:5031 __do_sys_renameat2 fs/namei.c:5062 [inline] __se_sys_renameat2 fs/namei.c:5059 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5059 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#8/1); lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#8/1); *** DEADLOCK *** 7 locks held by syz.3.312/5534: #0: ffff88807bbf6460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393 #1: ffff88807bbf6748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename fs/namei.c:3040 [inline] #1: ffff88807bbf6748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: do_renameat2+0x5a0/0x1440 fs/namei.c:4968 #2: ffff888059eb4a38 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3041 [inline] #2: ffff888059eb4a38 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_renameat2+0x61e/0x1440 fs/namei.c:4968 #3: ffff888059eb6850 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: do_renameat2+0x65a/0x1440 fs/namei.c:4968 #4: ffff88807bbf6650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #4: ffff88807bbf6650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #4: ffff88807bbf6650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x46d/0x1150 fs/ext4/inode.c:240 #5: ffff888059eb1698 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x999/0x1290 fs/ext4/inode.c:4272 #6: ffff888059eb14d8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #6: ffff888059eb14d8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5959 [inline] #6: ffff888059eb14d8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x4b0/0x920 fs/ext4/inode.c:6040 stack backtrace: CPU: 1 PID: 5534 Comm: syz.3.312 Not tainted 6.1.103-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ext4_xattr_inode_iget+0x425/0x5e0 fs/ext4/xattr.c:425 ext4_xattr_inode_get+0x17d/0x9a0 fs/ext4/xattr.c:485 ext4_xattr_move_to_block fs/ext4/xattr.c:2596 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2698 [inline] ext4_expand_extra_isize_ea+0xe70/0x1bb0 fs/ext4/xattr.c:2790 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5919 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5962 [inline] __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6040 ext4_ext_truncate+0x97/0x360 fs/ext4/extents.c:4430 ext4_truncate+0xa1d/0x1290 fs/ext4/inode.c:4277 ext4_evict_inode+0xb68/0x1150 fs/ext4/inode.c:286 evict+0x2a4/0x620 fs/inode.c:666 __dentry_kill+0x436/0x650 fs/dcache.c:611 dentry_kill+0xbb/0x290 dput+0xfb/0x1d0 fs/dcache.c:918 do_renameat2+0xded/0x1440 fs/namei.c:5031 __do_sys_renameat2 fs/namei.c:5062 [inline] __se_sys_renameat2 fs/namei.c:5059 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5059 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7feb207779f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feb205ff048 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007feb20905f80 RCX: 00007feb207779f9 RDX: 0000000000000006 RSI: 0000000020000080 RDI: 0000000000000007 RBP: 00007feb207e58ee R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007feb20905f80 R15: 00007ffdf247f558