======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.0.318/8275 is trying to acquire lock:
ffff0000f6d79800 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
ffff0000f6d79800 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x130/0x3ea0 fs/ocfs2/suballoc.c:789

but task is already holding lock:
ffff0000f6c986f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x330/0xe9c fs/ocfs2/xattr.c:3613

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x58/0x308 kernel/locking/rwsem.c:1537
       ocfs2_init_acl+0x258/0x63c fs/ocfs2/acl.c:367
       ocfs2_mknod+0x1008/0x1cf0 fs/ocfs2/namei.c:414
       ocfs2_create+0x178/0x474 fs/ocfs2/namei.c:677
       lookup_open fs/namei.c:4440 [inline]
       open_last_lookups fs/namei.c:4540 [inline]
       path_openat+0x143c/0x3114 fs/namei.c:4784
       do_filp_open+0x18c/0x36c fs/namei.c:4814
       do_sys_openat2+0x11c/0x1f0 fs/open.c:1430
       do_sys_open fs/open.c:1436 [inline]
       __do_sys_openat fs/open.c:1452 [inline]
       __se_sys_openat fs/open.c:1447 [inline]
       __arm64_sys_openat+0x120/0x158 fs/open.c:1447
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x58/0x308 kernel/locking/rwsem.c:1537
       ocfs2_start_trans+0x35c/0x6b0 fs/ocfs2/journal.c:372
       ocfs2_mknod+0xc30/0x1cf0 fs/ocfs2/namei.c:365
       ocfs2_create+0x178/0x474 fs/ocfs2/namei.c:677
       lookup_open fs/namei.c:4440 [inline]
       open_last_lookups fs/namei.c:4540 [inline]
       path_openat+0x143c/0x3114 fs/namei.c:4784
       do_filp_open+0x18c/0x36c fs/namei.c:4814
       do_sys_openat2+0x11c/0x1f0 fs/open.c:1430
       do_sys_open fs/open.c:1436 [inline]
       __do_sys_openat fs/open.c:1452 [inline]
       __se_sys_openat fs/open.c:1447 [inline]
       __arm64_sys_openat+0x120/0x158 fs/open.c:1447
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #1 (sb_internal#4){.+.+}-{0:0}:
       percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline]
       percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline]
       __sb_start_write include/linux/fs/super.h:19 [inline]
       sb_start_intwrite include/linux/fs/super.h:177 [inline]
       ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370
       ocfs2_xattr_free_block fs/ocfs2/xattr.c:2563 [inline]
       ocfs2_xattr_remove+0x7fc/0x10cc fs/ocfs2/xattr.c:2630
       ocfs2_wipe_inode fs/ocfs2/inode.c:884 [inline]
       ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]
       ocfs2_evict_inode+0x11d8/0x3c38 fs/ocfs2/inode.c:1299
       evict+0x4e0/0xa74 fs/inode.c:837
       iput_final fs/inode.c:1951 [inline]
       iput+0xc54/0xfdc fs/inode.c:2003
       ocfs2_dentry_iput+0x1d4/0x2d4 fs/ocfs2/dcache.c:407
       dentry_unlink_inode+0x36c/0x45c fs/dcache.c:465
       __dentry_kill+0x170/0x594 fs/dcache.c:670
       finish_dput+0xe4/0x45c fs/dcache.c:879
       dput+0x184/0x188 fs/dcache.c:928
       end_dirop fs/namei.c:2889 [inline]
       do_rmdir+0x274/0x404 fs/namei.c:5294
       __do_sys_unlinkat fs/namei.c:5468 [inline]
       __se_sys_unlinkat fs/namei.c:5462 [inline]
       __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:5462
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain kernel/locking/lockdep.c:3908 [inline]
       __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
       lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
       down_write+0x50/0xc0 kernel/locking/rwsem.c:1590
       inode_lock include/linux/fs.h:1027 [inline]
       ocfs2_reserve_suballoc_bits+0x130/0x3ea0 fs/ocfs2/suballoc.c:789
       ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:985
       ocfs2_init_xattr_set_ctxt+0x300/0x778 fs/ocfs2/xattr.c:3307
       ocfs2_xattr_set+0x920/0xe9c fs/ocfs2/xattr.c:3664
       ocfs2_set_acl+0x574/0x628 fs/ocfs2/acl.c:255
       ocfs2_iop_set_acl+0x190/0x25c fs/ocfs2/acl.c:287
       set_posix_acl fs/posix_acl.c:954 [inline]
       vfs_set_acl+0x704/0x96c fs/posix_acl.c:1133
       do_set_acl+0xe0/0x1a8 fs/posix_acl.c:1278
       do_setxattr fs/xattr.c:633 [inline]
       file_setxattr+0x210/0x294 fs/xattr.c:646
       path_setxattrat+0x2ac/0x320 fs/xattr.c:711
       __do_sys_fsetxattr fs/xattr.c:761 [inline]
       __se_sys_fsetxattr fs/xattr.c:758 [inline]
       __arm64_sys_fsetxattr+0xc0/0xdc fs/xattr.c:758
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --> &journal->j_trans_barrier --> &oi->ip_xattr_sem

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&oi->ip_xattr_sem);
                               lock(&journal->j_trans_barrier);
                               lock(&oi->ip_xattr_sem);
  lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]);

 *** DEADLOCK ***

3 locks held by syz.0.318/8275:
 #0: ffff0000d8d6e420 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:543
 #1: ffff0000f6c989c0 (&type->i_mutex_dir_key#14){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
 #1: ffff0000f6c989c0 (&type->i_mutex_dir_key#14){+.+.}-{4:4}, at: vfs_set_acl+0x338/0x96c fs/posix_acl.c:1114
 #2: ffff0000f6c986f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x330/0xe9c fs/ocfs2/xattr.c:3613

stack backtrace:
CPU: 0 UID: 0 PID: 8275 Comm: syz.0.318 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2043
 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
 down_write+0x50/0xc0 kernel/locking/rwsem.c:1590
 inode_lock include/linux/fs.h:1027 [inline]
 ocfs2_reserve_suballoc_bits+0x130/0x3ea0 fs/ocfs2/suballoc.c:789
 ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:985
 ocfs2_init_xattr_set_ctxt+0x300/0x778 fs/ocfs2/xattr.c:3307
 ocfs2_xattr_set+0x920/0xe9c fs/ocfs2/xattr.c:3664
 ocfs2_set_acl+0x574/0x628 fs/ocfs2/acl.c:255
 ocfs2_iop_set_acl+0x190/0x25c fs/ocfs2/acl.c:287
 set_posix_acl fs/posix_acl.c:954 [inline]
 vfs_set_acl+0x704/0x96c fs/posix_acl.c:1133
 do_set_acl+0xe0/0x1a8 fs/posix_acl.c:1278
 do_setxattr fs/xattr.c:633 [inline]
 file_setxattr+0x210/0x294 fs/xattr.c:646
 path_setxattrat+0x2ac/0x320 fs/xattr.c:711
 __do_sys_fsetxattr fs/xattr.c:761 [inline]
 __se_sys_fsetxattr fs/xattr.c:758 [inline]
 __arm64_sys_fsetxattr+0xc0/0xdc fs/xattr.c:758
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596