EXT4-fs: Ignoring removed nomblk_io_submit option
EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
======================================================
WARNING: possible circular locking dependency detected
6.10.0-syzkaller #0 Not tainted
------------------------------------------------------
syz.3.977/9212 is trying to acquire lock:
ffff88807bdd0400 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
ffff88807bdd0400 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x409/0x5d0 fs/ext4/xattr.c:461
but task is already holding lock:
ffff88807bdd7088 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x991/0x1180 fs/ext4/inode.c:4134
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+0x1ed/0x550 kernel/locking/lockdep.c:5754
down_write+0x3a/0x50 kernel/locking/rwsem.c:1579
ext4_update_i_disksize fs/ext4/ext4.h:3386 [inline]
ext4_xattr_inode_write fs/ext4/xattr.c:1446 [inline]
ext4_xattr_inode_lookup_create+0x1675/0x1ea0 fs/ext4/xattr.c:1596
ext4_xattr_ibody_set+0x214/0x730 fs/ext4/xattr.c:2263
ext4_xattr_set_handle+0xba6/0x1580 fs/ext4/xattr.c:2440
ext4_xattr_set+0x241/0x3d0 fs/ext4/xattr.c:2554
__vfs_setxattr+0x46a/0x4a0 fs/xattr.c:200
__vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234
vfs_setxattr+0x221/0x430 fs/xattr.c:321
do_setxattr fs/xattr.c:629 [inline]
setxattr+0x25d/0x2f0 fs/xattr.c:652
path_setxattr+0x1c0/0x2a0 fs/xattr.c:671
__do_sys_setxattr fs/xattr.c:687 [inline]
__se_sys_setxattr fs/xattr.c:683 [inline]
__x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:683
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3869
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
down_write+0x3a/0x50 kernel/locking/rwsem.c:1579
inode_lock include/linux/fs.h:791 [inline]
ext4_xattr_inode_iget+0x409/0x5d0 fs/ext4/xattr.c:461
ext4_xattr_inode_get+0x167/0x490 fs/ext4/xattr.c:535
ext4_xattr_move_to_block fs/ext4/xattr.c:2636 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2738 [inline]
ext4_expand_extra_isize_ea+0xf21/0x1cf0 fs/ext4/xattr.c:2830
__ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5782
ext4_try_to_expand_extra_isize fs/ext4/inode.c:5825 [inline]
__ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5903
ext4_ext_truncate+0x9f/0x2b0 fs/ext4/extents.c:4432
ext4_truncate+0xa18/0x1180 fs/ext4/inode.c:4139
ext4_evict_inode+0x90f/0xf50 fs/ext4/inode.c:258
evict+0x2aa/0x630 fs/inode.c:667
__dentry_kill+0x20d/0x630 fs/dcache.c:607
dput+0x19f/0x2b0 fs/dcache.c:849
do_renameat2+0xda1/0x13f0 fs/namei.c:5052
__do_sys_renameat2 fs/namei.c:5084 [inline]
__se_sys_renameat2 fs/namei.c:5081 [inline]
__x64_sys_renameat2+0xd2/0xf0 fs/namei.c:5081
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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.3.977/9212:
#0: ffff88806cfba420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88806cfba730 (&type->s_vfs_rename_key#5){+.+.}-{3:3}, at: lock_rename fs/namei.c:3078 [inline]
#1: ffff88806cfba730 (&type->s_vfs_rename_key#5){+.+.}-{3:3}, at: do_renameat2+0x5cf/0x13f0 fs/namei.c:4985
#2: ffff8880482be800 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline]
#2: ffff8880482be800 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_two_directories+0x145/0x220 fs/namei.c:3044
#3: ffff88807bdd5e00 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline]
#3: ffff88807bdd5e00 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: lock_two_directories+0x16f/0x220 fs/namei.c:3045
#4: ffff88806cfba610 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1655 [inline]
#4: ffff88806cfba610 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1838 [inline]
#4: ffff88806cfba610 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x2f4/0xf50 fs/ext4/inode.c:212
#5: ffff88807bdd7088 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x991/0x1180 fs/ext4/inode.c:4134
#6: ffff88807bdd6ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline]
#6: ffff88807bdd6ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5822 [inline]
#6: ffff88807bdd6ec8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x491/0x880 fs/ext4/inode.c:5903
stack backtrace:
CPU: 1 PID: 9212 Comm: syz.3.977 Not tainted 6.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3869
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
down_write+0x3a/0x50 kernel/locking/rwsem.c:1579
inode_lock include/linux/fs.h:791 [inline]
ext4_xattr_inode_iget+0x409/0x5d0 fs/ext4/xattr.c:461
ext4_xattr_inode_get+0x167/0x490 fs/ext4/xattr.c:535
ext4_xattr_move_to_block fs/ext4/xattr.c:2636 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2738 [inline]
ext4_expand_extra_isize_ea+0xf21/0x1cf0 fs/ext4/xattr.c:2830
__ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5782
ext4_try_to_expand_extra_isize fs/ext4/inode.c:5825 [inline]
__ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5903
ext4_ext_truncate+0x9f/0x2b0 fs/ext4/extents.c:4432
ext4_truncate+0xa18/0x1180 fs/ext4/inode.c:4139
ext4_evict_inode+0x90f/0xf50 fs/ext4/inode.c:258
evict+0x2aa/0x630 fs/inode.c:667
__dentry_kill+0x20d/0x630 fs/dcache.c:607
dput+0x19f/0x2b0 fs/dcache.c:849
do_renameat2+0xda1/0x13f0 fs/namei.c:5052
__do_sys_renameat2 fs/namei.c:5084 [inline]
__se_sys_renameat2 fs/namei.c:5081 [inline]
__x64_sys_renameat2+0xd2/0xf0 fs/namei.c:5081
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0947975bd9
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:00007f094866b048 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f0947b03f60 RCX: 00007f0947975bd9
RDX: 0000000000000005 RSI: 0000000020000080 RDI: 0000000000000006
RBP: 00007f09479e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0947b03f60 R15: 00007ffc0937c228
</TASK>