EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /111/mnt supports timestamps until 2038-01-19 (0x7fffffff)
======================================================
WARNING: possible circular locking dependency detected
6.1.139-syzkaller #0 Not tainted
------------------------------------------------------
syz.3.471/6283 is trying to acquire lock:
ffff88805ae09698 (&ei->i_data_sem/1){+.+.}-{3:3}, at: swap_inode_boot_loader+0x529/0x1100 fs/ext4/ioctl.c:426
but task is already holding lock:
ffff88805ae08288 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_double_down_write_data_sem+0x28/0x40 fs/ext4/move_extent.c:-1
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&ei->i_data_sem/2){++++}-{3:3}:
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
ext4_map_blocks+0x903/0x1b60 fs/ext4/inode.c:672
ext4_getblk+0x1ab/0x6d0 fs/ext4/inode.c:890
ext4_bread+0x26/0x170 fs/ext4/inode.c:946
ext4_quota_write+0x230/0x570 fs/ext4/super.c:7189
write_blk fs/quota/quota_tree.c:70 [inline]
find_free_dqentry+0x673/0xc20 fs/quota/quota_tree.c:318
do_insert_tree+0x70d/0x1040 fs/quota/quota_tree.c:400
do_insert_tree+0x9ae/0x1040 fs/quota/quota_tree.c:402
do_insert_tree+0x9ae/0x1040 fs/quota/quota_tree.c:402
do_insert_tree+0x9ae/0x1040 fs/quota/quota_tree.c:402
dq_insert_tree fs/quota/quota_tree.c:432 [inline]
qtree_write_dquot+0x48d/0x5b0 fs/quota/quota_tree.c:451
v2_write_dquot+0x108/0x190 fs/quota/quota_v2.c:361
dquot_acquire+0x2d5/0x520 fs/quota/dquot.c:472
ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6798
dqget+0x778/0xeb0 fs/quota/dquot.c:988
__dquot_initialize+0x328/0xcb0 fs/quota/dquot.c:1517
ext4_mkdir+0x16c/0xc50 fs/ext4/namei.c:3059
vfs_mkdir+0x387/0x570 fs/namei.c:4106
do_mkdirat+0x1d0/0x430 fs/namei.c:4131
__do_sys_mkdirat fs/namei.c:4146 [inline]
__se_sys_mkdirat fs/namei.c:4144 [inline]
__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4144
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #2 (&s->s_dquot.dqio_sem){++++}-{3:3}:
down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
v2_read_dquot+0x4a/0x110 fs/quota/quota_v2.c:335
dquot_acquire+0x152/0x520 fs/quota/dquot.c:463
ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6798
dqget+0x778/0xeb0 fs/quota/dquot.c:988
__dquot_initialize+0x328/0xcb0 fs/quota/dquot.c:1517
ext4_mkdir+0x16c/0xc50 fs/ext4/namei.c:3059
vfs_mkdir+0x387/0x570 fs/namei.c:4106
do_mkdirat+0x1d0/0x430 fs/namei.c:4131
__do_sys_mkdirat fs/namei.c:4146 [inline]
__se_sys_mkdirat fs/namei.c:4144 [inline]
__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4144
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #1 (&dquot->dq_lock){+.+.}-{3:3}:
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x120/0xaf0 kernel/locking/mutex.c:747
dquot_commit+0x5a/0x410 fs/quota/dquot.c:507
ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6778
mark_dquot_dirty fs/quota/dquot.c:372 [inline]
mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412
__dquot_alloc_space+0x5fc/0xe60 fs/quota/dquot.c:1752
dquot_alloc_space_nodirty include/linux/quotaops.h:300 [inline]
dquot_alloc_space include/linux/quotaops.h:313 [inline]
dquot_alloc_block include/linux/quotaops.h:337 [inline]
ext4_mb_new_blocks+0xf74/0x4720 fs/ext4/mballoc.c:5727
ext4_new_meta_blocks+0x151/0x3a0 fs/ext4/balloc.c:739
ext4_ext_grow_indepth fs/ext4/extents.c:1331 [inline]
ext4_ext_create_new_leaf fs/ext4/extents.c:1437 [inline]
ext4_ext_insert_extent+0x1048/0x4740 fs/ext4/extents.c:2105
ext4_split_extent_at+0x7d3/0xf80 fs/ext4/extents.c:3235
ext4_force_split_extent_at fs/ext4/extents.c:338 [inline]
ext4_swap_extents+0xfe6/0x1c90 fs/ext4/extents.c:5770
move_extent_per_page+0x1f63/0x47e0 fs/ext4/move_extent.c:367
ext4_move_extents+0x89a/0xb90 fs/ext4/move_extent.c:678
__ext4_ioctl fs/ext4/ioctl.c:1358 [inline]
ext4_ioctl+0x3501/0x3dd0 fs/ext4/ioctl.c:1614
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #0 (&ei->i_data_sem/1){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049
lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
down_write_nested+0x39/0x60 kernel/locking/rwsem.c:1689
swap_inode_boot_loader+0x529/0x1100 fs/ext4/ioctl.c:426
__ext4_ioctl fs/ext4/ioctl.c:1424 [inline]
ext4_ioctl+0x1bd0/0x3dd0 fs/ext4/ioctl.c:1614
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
other info that might help us debug this:
Chain exists of:
&ei->i_data_sem/1 --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ei->i_data_sem/2);
lock(&s->s_dquot.dqio_sem);
lock(&ei->i_data_sem/2);
lock(&ei->i_data_sem/1);
*** DEADLOCK ***
5 locks held by syz.3.471/6283:
#0: ffff8880798b2460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write_file+0x5c/0x200 fs/namespace.c:437
#1: ffff88805ae08400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff88805ae08400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: lock_two_nondirectories+0xd5/0x150 fs/inode.c:1208
#2: ffff88805ae09810 (&sb->s_type->i_mutex_key#8/4){+.+.}-{3:3}, at: swap_inode_boot_loader+0x70/0x1100 fs/ext4/ioctl.c:385
#3: ffff88805ae085a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline]
#3: ffff88805ae085a0 (mapping.invalidate_lock){++++}-{3:3}, at: swap_inode_boot_loader+0x37f/0x1100 fs/ext4/ioctl.c:402
#4: ffff88805ae08288 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_double_down_write_data_sem+0x28/0x40 fs/ext4/move_extent.c:-1
stack backtrace:
CPU: 1 PID: 6283 Comm: syz.3.471 Not tainted 6.1.139-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
<TASK>
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
check_noncircular+0x274/0x310 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 kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049
lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
down_write_nested+0x39/0x60 kernel/locking/rwsem.c:1689
swap_inode_boot_loader+0x529/0x1100 fs/ext4/ioctl.c:426
__ext4_ioctl fs/ext4/ioctl.c:1424 [inline]
ext4_ioctl+0x1bd0/0x3dd0 fs/ext4/ioctl.c:1614
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1e9378e969
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:00007f1e94606038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1e939b5fa0 RCX: 00007f1e9378e969
RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000005
RBP: 00007f1e93810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1e939b5fa0 R15: 00007ffc580ea418
</TASK>