======================================================
WARNING: possible circular locking dependency detected
6.1.100-syzkaller #0 Not tainted
------------------------------------------------------
syz.4.1581/9491 is trying to acquire lock:
ffff88805aebca38 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
ffff88805aebca38 (&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:
ffff88805aea8288 (&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:1397 [inline]
ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1545 [inline]
ext4_xattr_set_entry+0x34be/0x3fb0 fs/ext4/xattr.c:1669
ext4_xattr_ibody_set+0x11d/0x330 fs/ext4/xattr.c:2237
ext4_xattr_set_handle+0xc72/0x1560 fs/ext4/xattr.c:2394
ext4_xattr_set+0x231/0x3d0 fs/ext4/xattr.c:2508
__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:2590 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2692 [inline]
ext4_expand_extra_isize_ea+0xe70/0x1bb0 fs/ext4/xattr.c:2784
__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.4.1581/9491:
#0: ffff88807381e460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88807381e748 (&type->s_vfs_rename_key#3){+.+.}-{3:3}, at: lock_rename fs/namei.c:3040 [inline]
#1: ffff88807381e748 (&type->s_vfs_rename_key#3){+.+.}-{3:3}, at: do_renameat2+0x5a0/0x1440 fs/namei.c:4968
#2: ffff88805aea8e08 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3041 [inline]
#2: ffff88805aea8e08 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_renameat2+0x61e/0x1440 fs/namei.c:4968
#3: ffff88805aea9810 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: do_renameat2+0x65a/0x1440 fs/namei.c:4968
#4: ffff88807381e650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline]
#4: ffff88807381e650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline]
#4: ffff88807381e650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x46d/0x1150 fs/ext4/inode.c:240
#5: ffff88805aea8288 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x999/0x1290 fs/ext4/inode.c:4272
#6: ffff88805aea80c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline]
#6: ffff88805aea80c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5959 [inline]
#6: ffff88805aea80c8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x4b0/0x920 fs/ext4/inode.c:6040
stack backtrace:
CPU: 1 PID: 9491 Comm: syz.4.1581 Not tainted 6.1.100-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
<TASK>
__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:2590 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2692 [inline]
ext4_expand_extra_isize_ea+0xe70/0x1bb0 fs/ext4/xattr.c:2784
__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: 0033:0x7f7335b75f19
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:00007f73369b7048 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f7335d061e8 RCX: 00007f7335b75f19
RDX: 0000000000000006 RSI: 0000000020000080 RDI: 0000000000000007
RBP: 00007f7335be4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7335d061e8 R15: 00007ffc4932c478
</TASK>