EXT4-fs (loop2): mounted filesystem without journal. Opts: min_batch_time=0x000000000000000d,mb_optimize_scan=0x0000000000000001,noblock_validity,,errors=continue. Quota mode: none.
======================================================
WARNING: possible circular locking dependency detected
5.15.185-syzkaller #0 Not tainted
------------------------------------------------------
syz.2.359/5369 is trying to acquire lock:
ffff0000e9509eb0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
ffff0000e9509eb0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_inline_data_truncate+0x158/0xa24 fs/ext4/inline.c:1941
but task is already holding lock:
ffff0000e950a378 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
ffff0000e950a378 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xa34/0x142c fs/ext4/inode.c:5505
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #6 (mapping.invalidate_lock){++++}-{3:3}:
down_read+0xc0/0x390 kernel/locking/rwsem.c:1498
filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
filemap_fault+0x4b0/0xeac mm/filemap.c:3081
__do_fault+0x120/0x5d0 mm/memory.c:3928
do_read_fault mm/memory.c:4264 [inline]
do_fault mm/memory.c:4392 [inline]
handle_pte_fault mm/memory.c:4650 [inline]
__handle_mm_fault mm/memory.c:4785 [inline]
handle_mm_fault+0x1b4c/0x2950 mm/memory.c:4883
__do_page_fault arch/arm64/mm/fault.c:505 [inline]
do_page_fault+0x694/0xad4 arch/arm64/mm/fault.c:605
do_translation_fault+0xe0/0x130 arch/arm64/mm/fault.c:686
do_mem_abort+0x6c/0x1ac arch/arm64/mm/fault.c:819
el0_da+0x90/0x1fc arch/arm64/kernel/entry-common.c:494
el0t_64_sync_handler+0xd8/0xe4 arch/arm64/kernel/entry-common.c:629
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #5 (&mm->mmap_lock){++++}-{3:3}:
__might_fault+0xc8/0x128 mm/memory.c:5357
_copy_to_user include/linux/uaccess.h:174 [inline]
copy_to_user include/linux/uaccess.h:200 [inline]
fiemap_fill_next_extent+0x15c/0x3e0 fs/ioctl.c:144
ocfs2_fiemap_inline fs/ocfs2/extent_map.c:725 [inline]
ocfs2_fiemap+0x73c/0x98c fs/ocfs2/extent_map.c:762
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x18d8/0x2370 fs/ioctl.c:814
__do_sys_ioctl fs/ioctl.c:872 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #4 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}:
down_read+0xc0/0x390 kernel/locking/rwsem.c:1498
ocfs2_read_virt_blocks+0x228/0x858 fs/ocfs2/extent_map.c:976
ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline]
ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline]
ocfs2_find_entry+0x314/0x1b84 fs/ocfs2/dir.c:1091
ocfs2_find_files_on_disk+0x10c/0x388 fs/ocfs2/dir.c:1995
ocfs2_lookup_ino_from_name+0x60/0x114 fs/ocfs2/dir.c:2017
_ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline]
ocfs2_get_system_file_inode+0x288/0x5ec fs/ocfs2/sysfile.c:112
ocfs2_init_global_system_inodes+0x2a8/0x594 fs/ocfs2/super.c:458
ocfs2_initialize_super fs/ocfs2/super.c:2279 [inline]
ocfs2_fill_super+0x3128/0x4074 fs/ocfs2/super.c:995
mount_bdev+0x264/0x358 fs/super.c:1400
ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187
legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
vfs_get_tree+0x90/0x274 fs/super.c:1530
do_new_mount+0x228/0x810 fs/namespace.c:3010
path_mount+0x5b4/0x1000 fs/namespace.c:3340
do_mount fs/namespace.c:3353 [inline]
__do_sys_mount fs/namespace.c:3561 [inline]
__se_sys_mount fs/namespace.c:3538 [inline]
__arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #3 (&osb->system_file_mutex){+.+.}-{3:3}:
__mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743
ocfs2_get_system_file_inode+0x15c/0x5ec fs/ocfs2/sysfile.c:101
ocfs2_reserve_local_alloc_bits+0xe0/0x260c fs/ocfs2/localalloc.c:626
ocfs2_reserve_clusters_with_limit+0x198/0x9e0 fs/ocfs2/suballoc.c:1162
ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline]
ocfs2_lock_allocators+0x27c/0x518 fs/ocfs2/suballoc.c:2669
ocfs2_extend_allocation+0x328/0x1504 fs/ocfs2/file.c:588
ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1030
ocfs2_acquire_dquot+0x530/0xa2c fs/ocfs2/quota_global.c:841
dqget+0x658/0xcf4 fs/quota/dquot.c:988
ocfs2_setattr+0xc08/0x16c4 fs/ocfs2/file.c:1246
notify_change+0xa08/0xcd8 fs/attr.c:505
chown_common+0x42c/0x5a0 fs/open.c:680
vfs_fchown fs/open.c:748 [inline]
ksys_fchown+0xe0/0x158 fs/open.c:759
__do_sys_fchown fs/open.c:767 [inline]
__se_sys_fchown fs/open.c:765 [inline]
__arm64_sys_fchown+0x7c/0x94 fs/open.c:765
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}:
down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
ocfs2_create_local_dquot+0x15c/0x1368 fs/ocfs2/quota_local.c:1224
ocfs2_acquire_dquot+0x6b0/0xa2c fs/ocfs2/quota_global.c:871
dqget+0x658/0xcf4 fs/quota/dquot.c:988
__dquot_initialize+0x2d4/0xa80 fs/quota/dquot.c:1517
dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579
ocfs2_get_init_inode+0x134/0x1a8 fs/ocfs2/namei.c:202
ocfs2_mknod+0x758/0x1e88 fs/ocfs2/namei.c:310
ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674
lookup_open fs/namei.c:3462 [inline]
open_last_lookups fs/namei.c:3532 [inline]
path_openat+0x1144/0x26e4 fs/namei.c:3739
do_filp_open+0x164/0x330 fs/namei.c:3769
do_sys_openat2+0x128/0x3d8 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__arm64_sys_openat+0x120/0x154 fs/open.c:1280
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #1 (&dquot->dq_lock){+.+.}-{3:3}:
__mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743
wait_on_dquot fs/quota/dquot.c:356 [inline]
dqget+0x5e8/0xcf4 fs/quota/dquot.c:983
dquot_transfer+0x240/0x3cc fs/quota/dquot.c:2157
ext4_setattr+0x588/0x142c fs/ext4/inode.c:5451
notify_change+0xa08/0xcd8 fs/attr.c:505
chown_common+0x42c/0x5a0 fs/open.c:680
vfs_fchown fs/open.c:748 [inline]
ksys_fchown+0xe0/0x158 fs/open.c:759
__do_sys_fchown fs/open.c:767 [inline]
__se_sys_fchown fs/open.c:765 [inline]
__arm64_sys_fchown+0x7c/0x94 fs/open.c:765
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #0 (&ei->xattr_sem){++++}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012
lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
ext4_inline_data_truncate+0x158/0xa24 fs/ext4/inline.c:1941
ext4_truncate+0x38c/0xf94 fs/ext4/inode.c:4206
ext4_setattr+0xc20/0x142c fs/ext4/inode.c:5582
notify_change+0xa08/0xcd8 fs/attr.c:505
do_truncate+0x178/0x1f0 fs/open.c:65
vfs_truncate+0x23c/0x2b0 fs/open.c:111
do_sys_truncate+0xe8/0x1b0 fs/open.c:134
__do_sys_truncate fs/open.c:146 [inline]
__se_sys_truncate fs/open.c:144 [inline]
__arm64_sys_truncate+0x5c/0x70 fs/open.c:144
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
other info that might help us debug this:
Chain exists of:
&ei->xattr_sem --> &mm->mmap_lock --> mapping.invalidate_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(mapping.invalidate_lock);
lock(&mm->mmap_lock);
lock(mapping.invalidate_lock);
lock(&ei->xattr_sem);
*** DEADLOCK ***
3 locks held by syz.2.359/5369:
#0: ffff0000e6d76460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377
#1: ffff0000e950a1d8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#1: ffff0000e950a1d8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: do_truncate+0x164/0x1f0 fs/open.c:63
#2: ffff0000e950a378 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#2: ffff0000e950a378 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xa34/0x142c fs/ext4/inode.c:5505
stack backtrace:
CPU: 1 PID: 5369 Comm: syz.2.359 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
__dump_stack+0x30/0x40 lib/dump_stack.c:88
dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
dump_stack+0x1c/0x5c lib/dump_stack.c:113
print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011
check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012
lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
ext4_inline_data_truncate+0x158/0xa24 fs/ext4/inline.c:1941
ext4_truncate+0x38c/0xf94 fs/ext4/inode.c:4206
ext4_setattr+0xc20/0x142c fs/ext4/inode.c:5582
notify_change+0xa08/0xcd8 fs/attr.c:505
do_truncate+0x178/0x1f0 fs/open.c:65
vfs_truncate+0x23c/0x2b0 fs/open.c:111
do_sys_truncate+0xe8/0x1b0 fs/open.c:134
__do_sys_truncate fs/open.c:146 [inline]
__se_sys_truncate fs/open.c:144 [inline]
__arm64_sys_truncate+0x5c/0x70 fs/open.c:144
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584