======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.2.589/8743 is trying to acquire lock:
ffff88805bca5f58 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
ffff88805bca5f58 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_move_extent fs/ocfs2/move_extents.c:648 [inline]
ffff88805bca5f58 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: __ocfs2_move_extents_range+0x1a35/0x3450 fs/ocfs2/move_extents.c:868

but task is already holding lock:
ffff88805843d118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
ffff88805843d118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_move_extent fs/ocfs2/move_extents.c:640 [inline]
ffff88805843d118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: __ocfs2_move_extents_range+0x1323/0x3450 fs/ocfs2/move_extents.c:868

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}:
       down_write+0x97/0x200 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:804 [inline]
       __ocfs2_flush_truncate_log+0x352/0x1130 fs/ocfs2/alloc.c:6046
       ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6076 [inline]
       ocfs2_try_to_free_truncate_log+0x1ab/0x370 fs/ocfs2/alloc.c:6135
       ocfs2_write_begin_nolock+0x32d3/0x4480 fs/ocfs2/aops.c:1872
       ocfs2_dio_wr_get_block+0xba8/0x1820 fs/ocfs2/aops.c:2241
       get_more_blocks fs/direct-io.c:647 [inline]
       do_direct_IO fs/direct-io.c:935 [inline]
       __blockdev_direct_IO+0x1628/0x32e0 fs/direct-io.c:1248
       ocfs2_direct_IO+0x235/0x2a0 fs/ocfs2/aops.c:2488
       generic_file_direct_write+0x1c9/0x3e0 mm/filemap.c:3952
       __generic_file_write_iter+0x11b/0x230 mm/filemap.c:4108
       ocfs2_file_write_iter+0x1724/0x1ef0 fs/ocfs2/file.c:2468
       do_iter_readv_writev fs/read_write.c:-1 [inline]
       do_iter_write+0x747/0xc50 fs/read_write.c:860
       iter_file_splice_write+0x6b6/0xcf0 fs/splice.c:736
       do_splice_from fs/splice.c:933 [inline]
       direct_splice_actor+0xe8/0x130 fs/splice.c:1142
       splice_direct_to_actor+0x30b/0x8e0 fs/splice.c:1088
       do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194
       do_sendfile+0x52b/0xe80 fs/read_write.c:1254
       __do_sys_sendfile64 fs/read_write.c:1322 [inline]
       __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3162 [inline]
       check_prevs_add kernel/locking/lockdep.c:3281 [inline]
       validate_chain kernel/locking/lockdep.c:3897 [inline]
       __lock_acquire+0x3a07/0x7eb0 kernel/locking/lockdep.c:5171
       lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5790
       down_write+0x97/0x200 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:804 [inline]
       ocfs2_move_extent fs/ocfs2/move_extents.c:648 [inline]
       __ocfs2_move_extents_range+0x1a35/0x3450 fs/ocfs2/move_extents.c:868
       ocfs2_move_extents+0x3f9/0xa10 fs/ocfs2/move_extents.c:940
       ocfs2_ioctl_move_extents+0x4db/0x6e0 fs/ocfs2/move_extents.c:1066
       ocfs2_ioctl+0x199/0x7e0 fs/ocfs2/ioctl.c:961
       vfs_ioctl fs/ioctl.c:51 [inline]
       __do_sys_ioctl fs/ioctl.c:871 [inline]
       __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
                               lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6);
                               lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
  lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6);

 *** DEADLOCK ***

5 locks held by syz.2.589/8743:
 #0: ffff88802ca1a418 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write_file+0x63/0x200 fs/namespace.c:456
 #1: ffff88805bdd6d98 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
 #1: ffff88805bdd6d98 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: ocfs2_move_extents+0x1a0/0xa10 fs/ocfs2/move_extents.c:918
 #2: ffff88805bdd6a20 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_move_extents+0x3ec/0xa10 fs/ocfs2/move_extents.c:938
 #3: ffff8880584389d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
 #3: ffff8880584389d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x171/0x44a0 fs/ocfs2/suballoc.c:804
 #4: ffff88805843d118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
 #4: ffff88805843d118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_move_extent fs/ocfs2/move_extents.c:640 [inline]
 #4: ffff88805843d118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: __ocfs2_move_extents_range+0x1323/0x3450 fs/ocfs2/move_extents.c:868

stack backtrace:
CPU: 0 PID: 8743 Comm: syz.2.589 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 check_noncircular+0x2fc/0x400 kernel/locking/lockdep.c:2215
 check_prev_add kernel/locking/lockdep.c:3162 [inline]
 check_prevs_add kernel/locking/lockdep.c:3281 [inline]
 validate_chain kernel/locking/lockdep.c:3897 [inline]
 __lock_acquire+0x3a07/0x7eb0 kernel/locking/lockdep.c:5171
 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5790
 down_write+0x97/0x200 kernel/locking/rwsem.c:1573
 inode_lock include/linux/fs.h:804 [inline]
 ocfs2_move_extent fs/ocfs2/move_extents.c:648 [inline]
 __ocfs2_move_extents_range+0x1a35/0x3450 fs/ocfs2/move_extents.c:868
 ocfs2_move_extents+0x3f9/0xa10 fs/ocfs2/move_extents.c:940
 ocfs2_ioctl_move_extents+0x4db/0x6e0 fs/ocfs2/move_extents.c:1066
 ocfs2_ioctl+0x199/0x7e0 fs/ocfs2/ioctl.c:961
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f85b479fb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f85b570f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f85b4a26090 RCX: 00007f85b479fb19
RDX: 000020000000ab80 RSI: 0000000040406f06 RDI: 0000000000000009
RBP: 00007f85b4837b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f85b4a26128 R14: 00007f85b4a26090 R15: 00007ffcc3bf76e8
 </TASK>
kcov: kcov_task_exit: t = ffff88802749bc00, kcov->t = ffff88802749bc00