EXT4-fs (loop3): 1 truncate cleaned up
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
======================================================
WARNING: possible circular locking dependency detected
6.1.28-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.3/4673 is trying to acquire lock:
ffff88803dd1ca38 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
ffff88803dd1ca38 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x4a3/0x5e0 fs/ext4/xattr.c:438
but task is already holding lock:
ffff88803dd1beb8 (&ei->i_data_sem){++++}-{3:3}, at: ext4_setattr+0x13fa/0x1a00 fs/ext4/inode.c:5521
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&ei->i_data_sem){++++}-{3:3}:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5669
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
ext4_update_i_disksize fs/ext4/ext4.h:3383 [inline]
ext4_xattr_inode_write fs/ext4/xattr.c:1413 [inline]
ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1562 [inline]
ext4_xattr_set_entry+0x3187/0x3c00 fs/ext4/xattr.c:1686
ext4_xattr_ibody_set+0x11d/0x330 fs/ext4/xattr.c:2238
ext4_xattr_set_handle+0xc72/0x1560 fs/ext4/xattr.c:2395
ext4_xattr_set+0x231/0x3d0 fs/ext4/xattr.c:2509
__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:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3098 [inline]
check_prevs_add kernel/locking/lockdep.c:3217 [inline]
validate_chain+0x1667/0x58e0 kernel/locking/lockdep.c:3832
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5056
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5669
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:756 [inline]
ext4_xattr_inode_iget+0x4a3/0x5e0 fs/ext4/xattr.c:438
ext4_xattr_inode_get+0x17d/0x9a0 fs/ext4/xattr.c:501
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+0xe77/0x1bc0 fs/ext4/xattr.c:2784
__ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5893
ext4_try_to_expand_extra_isize fs/ext4/inode.c:5936 [inline]
__ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6014
ext4_setattr+0x1493/0x1a00 fs/ext4/inode.c:5524
notify_change+0xdcd/0x1080 fs/attr.c:482
do_truncate+0x21c/0x300 fs/open.c:65
handle_truncate fs/namei.c:3216 [inline]
do_open fs/namei.c:3561 [inline]
path_openat+0x27e2/0x2e60 fs/namei.c:3714
do_filp_open+0x230/0x480 fs/namei.c:3741
do_sys_openat2+0x13b/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_creat fs/open.c:1402 [inline]
__se_sys_creat fs/open.c:1396 [inline]
__x64_sys_creat+0x11f/0x160 fs/open.c:1396
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ei->i_data_sem);
lock(&ea_inode->i_rwsem#8/1);
lock(&ei->i_data_sem);
lock(&ea_inode->i_rwsem#8/1);
*** DEADLOCK ***
5 locks held by syz-executor.3/4673:
#0: ffff888036f74460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88803dd1c030 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88803dd1c030 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0x208/0x300 fs/open.c:63
#2: ffff88803dd1c1d0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline]
#2: ffff88803dd1c1d0 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xec7/0x1a00 fs/ext4/inode.c:5481
#3: ffff88803dd1beb8 (&ei->i_data_sem){++++}-{3:3}, at: ext4_setattr+0x13fa/0x1a00 fs/ext4/inode.c:5521
#4: ffff88803dd1bcf8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline]
#4: ffff88803dd1bcf8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5933 [inline]
#4: ffff88803dd1bcf8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x4b0/0x920 fs/ext4/inode.c:6014
stack backtrace:
CPU: 0 PID: 4673 Comm: syz-executor.3 Not tainted 6.1.28-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
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:2178
check_prev_add kernel/locking/lockdep.c:3098 [inline]
check_prevs_add kernel/locking/lockdep.c:3217 [inline]
validate_chain+0x1667/0x58e0 kernel/locking/lockdep.c:3832
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5056
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5669
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:756 [inline]
ext4_xattr_inode_iget+0x4a3/0x5e0 fs/ext4/xattr.c:438
ext4_xattr_inode_get+0x17d/0x9a0 fs/ext4/xattr.c:501
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+0xe77/0x1bc0 fs/ext4/xattr.c:2784
__ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5893
ext4_try_to_expand_extra_isize fs/ext4/inode.c:5936 [inline]
__ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6014
ext4_setattr+0x1493/0x1a00 fs/ext4/inode.c:5524
notify_change+0xdcd/0x1080 fs/attr.c:482
do_truncate+0x21c/0x300 fs/open.c:65
handle_truncate fs/namei.c:3216 [inline]
do_open fs/namei.c:3561 [inline]
path_openat+0x27e2/0x2e60 fs/namei.c:3714
do_filp_open+0x230/0x480 fs/namei.c:3741
do_sys_openat2+0x13b/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_creat fs/open.c:1402 [inline]
__se_sys_creat fs/open.c:1396 [inline]
__x64_sys_creat+0x11f/0x160 fs/open.c:1396
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f90b5a8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90b68ac168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f90b5babf80 RCX: 00007f90b5a8c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007f90b5ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc79752d3f R14: 00007f90b68ac300 R15: 0000000000022000
</TASK>