======================================================
WARNING: possible circular locking dependency detected
6.12.0-rc2-syzkaller-00050-g5b7c893ed5ed #0 Not tainted
------------------------------------------------------
syz.3.724/11667 is trying to acquire lock:
ffff888079c19498 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
ffff888079c19498 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x277/0x1580 fs/ext4/xattr.c:2373
but task is already holding lock:
ffff88802dd9e958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #5 (jbd2_handle){++++}-{0:0}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
start_this_handle+0x1eb4/0x2110 fs/jbd2/transaction.c:448
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:544
ocfs2_start_trans+0x3c9/0x700 fs/ocfs2/journal.c:352
ocfs2_modify_bh+0xed/0x4d0 fs/ocfs2/quota_local.c:101
ocfs2_local_read_info+0x158f/0x19f0 fs/ocfs2/quota_local.c:771
dquot_load_quota_sb+0x764/0xbb0 fs/quota/dquot.c:2458
dquot_load_quota_inode+0x320/0x600 fs/quota/dquot.c:2495
ocfs2_enable_quotas+0x169/0x450 fs/ocfs2/super.c:926
ocfs2_fill_super+0x4c8d/0x5750 fs/ocfs2/super.c:1141
mount_bdev+0x20c/0x2d0 fs/super.c:1679
legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
vfs_get_tree+0x92/0x2b0 fs/super.c:1800
do_new_mount+0x2be/0xb40 fs/namespace.c:3507
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4055 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032
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
-> #4 (&journal->j_trans_barrier){.+.+}-{3:3}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524
ocfs2_start_trans+0x3be/0x700 fs/ocfs2/journal.c:350
ocfs2_modify_bh+0xed/0x4d0 fs/ocfs2/quota_local.c:101
ocfs2_local_read_info+0x158f/0x19f0 fs/ocfs2/quota_local.c:771
dquot_load_quota_sb+0x764/0xbb0 fs/quota/dquot.c:2458
dquot_load_quota_inode+0x320/0x600 fs/quota/dquot.c:2495
ocfs2_enable_quotas+0x169/0x450 fs/ocfs2/super.c:926
ocfs2_fill_super+0x4c8d/0x5750 fs/ocfs2/super.c:1141
mount_bdev+0x20c/0x2d0 fs/super.c:1679
legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
vfs_get_tree+0x92/0x2b0 fs/super.c:1800
do_new_mount+0x2be/0xb40 fs/namespace.c:3507
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4055 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032
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
-> #3 (sb_internal#6){.+.+}-{0:0}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
__sb_start_write include/linux/fs.h:1716 [inline]
sb_start_intwrite include/linux/fs.h:1899 [inline]
ocfs2_start_trans+0x2b9/0x700 fs/ocfs2/journal.c:348
ocfs2_acquire_dquot+0x6df/0xb80 fs/ocfs2/quota_global.c:855
dqget+0x772/0xeb0 fs/quota/dquot.c:976
__dquot_initialize+0x2e3/0xec0 fs/quota/dquot.c:1504
ocfs2_get_init_inode+0x158/0x1c0 fs/ocfs2/namei.c:202
ocfs2_mknod+0xcfa/0x2b40 fs/ocfs2/namei.c:308
ocfs2_mkdir+0x1ab/0x480 fs/ocfs2/namei.c:655
vfs_mkdir+0x2fb/0x4f0 fs/namei.c:4257
do_mkdirat+0x264/0x3a0 fs/namei.c:4280
__do_sys_mkdirat fs/namei.c:4295 [inline]
__se_sys_mkdirat fs/namei.c:4293 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
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
-> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
down_write+0x99/0x220 kernel/locking/rwsem.c:1577
ocfs2_create_local_dquot+0x1de/0x1d70 fs/ocfs2/quota_local.c:1231
ocfs2_acquire_dquot+0x833/0xb80 fs/ocfs2/quota_global.c:878
dqget+0x772/0xeb0 fs/quota/dquot.c:976
__dquot_initialize+0x2e3/0xec0 fs/quota/dquot.c:1504
ocfs2_get_init_inode+0x158/0x1c0 fs/ocfs2/namei.c:202
ocfs2_mknod+0xcfa/0x2b40 fs/ocfs2/namei.c:308
ocfs2_mkdir+0x1ab/0x480 fs/ocfs2/namei.c:655
vfs_mkdir+0x2fb/0x4f0 fs/namei.c:4257
do_mkdirat+0x264/0x3a0 fs/namei.c:4280
__do_sys_mkdirat fs/namei.c:4295 [inline]
__se_sys_mkdirat fs/namei.c:4293 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
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
-> #1 (&dquot->dq_lock){+.+.}-{3:3}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
__mutex_lock_common kernel/locking/mutex.c:608 [inline]
__mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752
wait_on_dquot fs/quota/dquot.c:355 [inline]
dqget+0x6e6/0xeb0 fs/quota/dquot.c:971
dquot_transfer+0x482/0x6d0 fs/quota/dquot.c:2153
ext4_setattr+0xaf3/0x1bc0 fs/ext4/inode.c:5368
notify_change+0xbcc/0xe90 fs/attr.c:503
chown_common+0x501/0x850 fs/open.c:793
do_fchownat+0x16a/0x240 fs/open.c:824
__do_sys_lchown fs/open.c:849 [inline]
__se_sys_lchown fs/open.c:847 [inline]
__x64_sys_lchown+0x85/0xa0 fs/open.c:847
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 (&ei->xattr_sem){++++}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3161 [inline]
check_prevs_add kernel/locking/lockdep.c:3280 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
__lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
down_write+0x99/0x220 kernel/locking/rwsem.c:1577
ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
ext4_xattr_set_handle+0x277/0x1580 fs/ext4/xattr.c:2373
__ext4_set_acl+0x532/0x620 fs/ext4/acl.c:217
ext4_set_acl+0x468/0x760 fs/ext4/acl.c:259
set_posix_acl fs/posix_acl.c:955 [inline]
vfs_set_acl+0x7ff/0xa60 fs/posix_acl.c:1134
do_set_acl+0xf4/0x180 fs/posix_acl.c:1279
do_setxattr fs/xattr.c:626 [inline]
__do_sys_fsetxattr fs/xattr.c:710 [inline]
__se_sys_fsetxattr+0x3b5/0x480 fs/xattr.c:686
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:
Chain exists of:
&ei->xattr_sem --> &journal->j_trans_barrier --> jbd2_handle
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
rlock(jbd2_handle);
lock(&journal->j_trans_barrier);
lock(jbd2_handle);
lock(&ei->xattr_sem);
*** DEADLOCK ***
3 locks held by syz.3.724/11667:
#0: ffff88802dd9a420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x200 fs/namespace.c:559
#1: ffff888079c197c8 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff888079c197c8 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_set_acl+0x364/0xa60 fs/posix_acl.c:1115
#2: ffff88802dd9e958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
stack backtrace:
CPU: 0 UID: 0 PID: 11667 Comm: syz.3.724 Not tainted 6.12.0-rc2-syzkaller-00050-g5b7c893ed5ed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074
check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206
check_prev_add kernel/locking/lockdep.c:3161 [inline]
check_prevs_add kernel/locking/lockdep.c:3280 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
__lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
down_write+0x99/0x220 kernel/locking/rwsem.c:1577
ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
ext4_xattr_set_handle+0x277/0x1580 fs/ext4/xattr.c:2373
__ext4_set_acl+0x532/0x620 fs/ext4/acl.c:217
ext4_set_acl+0x468/0x760 fs/ext4/acl.c:259
set_posix_acl fs/posix_acl.c:955 [inline]
vfs_set_acl+0x7ff/0xa60 fs/posix_acl.c:1134
do_set_acl+0xf4/0x180 fs/posix_acl.c:1279
do_setxattr fs/xattr.c:626 [inline]
__do_sys_fsetxattr fs/xattr.c:710 [inline]
__se_sys_fsetxattr+0x3b5/0x480 fs/xattr.c:686
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: 0033:0x7f585ab7dff9
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:00007f585b935038 EFLAGS: 00000246 ORIG_RAX: 00000000000000be
RAX: ffffffffffffffda RBX: 00007f585ad36130 RCX: 00007f585ab7dff9
RDX: 0000000020000500 RSI: 0000000020000100 RDI: 0000000000000007
RBP: 00007f585abf0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f585ad36130 R15: 00007ffcb537bee8
</TASK>