======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/4427 is trying to acquire lock:
ffff88806e9e5108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
ffff88806e9e5108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: __ocfs2_flush_truncate_log+0x36a/0x1220 fs/ocfs2/alloc.c:6046

but task is already holding lock:
ffff88806e9eb488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
ffff88806e9eb488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6075 [inline]
ffff88806e9eb488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_try_to_free_truncate_log+0x19f/0x370 fs/ocfs2/alloc.c:6135

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]#6){+.+.}-{3:3}:
       down_write+0x36/0x60 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:764 [inline]
       ocfs2_move_extent fs/ocfs2/move_extents.c:648 [inline]
       __ocfs2_move_extents_range+0x1a31/0x3450 fs/ocfs2/move_extents.c:868
       ocfs2_move_extents+0x409/0xa40 fs/ocfs2/move_extents.c:940
       ocfs2_ioctl_move_extents+0x4d4/0x6e0 fs/ocfs2/move_extents.c:1066
       ocfs2_ioctl+0x31d/0x7c0 fs/ocfs2/ioctl.c:946
       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:46 [inline]
       do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3095 [inline]
       check_prevs_add kernel/locking/lockdep.c:3214 [inline]
       validate_chain kernel/locking/lockdep.c:3830 [inline]
       __lock_acquire+0x2d18/0x7c40 kernel/locking/lockdep.c:5063
       lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5678
       down_write+0x36/0x60 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:764 [inline]
       __ocfs2_flush_truncate_log+0x36a/0x1220 fs/ocfs2/alloc.c:6046
       ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6076 [inline]
       ocfs2_try_to_free_truncate_log+0x1a7/0x370 fs/ocfs2/alloc.c:6135
       ocfs2_write_begin_nolock+0x3306/0x4590 fs/ocfs2/aops.c:1872
       ocfs2_dio_wr_get_block+0xba4/0x1810 fs/ocfs2/aops.c:2241
       get_more_blocks fs/direct-io.c:659 [inline]
       do_direct_IO fs/direct-io.c:947 [inline]
       __blockdev_direct_IO+0x171f/0x34c0 fs/direct-io.c:1260
       ocfs2_direct_IO+0x233/0x2a0 fs/ocfs2/aops.c:2488
       generic_file_direct_write+0x112/0x330 mm/filemap.c:3787
       __generic_file_write_iter+0x15f/0x2a0 mm/filemap.c:3945
       ocfs2_file_write_iter+0x1731/0x1fc0 fs/ocfs2/file.c:2469
       do_iter_readv_writev fs/read_write.c:-1 [inline]
       do_iter_write+0x638/0xb10 fs/read_write.c:861
       iter_file_splice_write+0x6be/0xcf0 fs/splice.c:685
       do_splice_from fs/splice.c:763 [inline]
       direct_splice_actor+0xe1/0x130 fs/splice.c:950
       splice_direct_to_actor+0x4b8/0xbd0 fs/splice.c:896
       do_splice_direct+0x1ce/0x2f0 fs/splice.c:1002
       do_sendfile+0x51b/0xe20 fs/read_write.c:1255
       __do_sys_sendfile64 fs/read_write.c:1323 [inline]
       __se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1309
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x4c/0xa0 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]#6);
                               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);

 *** DEADLOCK ***

4 locks held by syz.0.17/4427:
 #0: ffff88801bfa0460 (sb_writers#13){.+.+}-{0:0}, at: do_sendfile+0x4f6/0xe20 fs/read_write.c:1254
 #1: ffff88806e9ec2c8 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
 #1: ffff88806e9ec2c8 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x45a/0x1fc0 fs/ocfs2/file.c:2399
 #2: ffff88806e9ebf60 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_dio_wr_get_block+0x90c/0x1810 fs/ocfs2/aops.c:2227
 #3: ffff88806e9eb488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
 #3: ffff88806e9eb488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6075 [inline]
 #3: ffff88806e9eb488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_try_to_free_truncate_log+0x19f/0x370 fs/ocfs2/alloc.c:6135

stack backtrace:
CPU: 1 PID: 4427 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 check_noncircular+0x296/0x330 kernel/locking/lockdep.c:2170
 check_prev_add kernel/locking/lockdep.c:3095 [inline]
 check_prevs_add kernel/locking/lockdep.c:3214 [inline]
 validate_chain kernel/locking/lockdep.c:3830 [inline]
 __lock_acquire+0x2d18/0x7c40 kernel/locking/lockdep.c:5063
 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5678
 down_write+0x36/0x60 kernel/locking/rwsem.c:1573
 inode_lock include/linux/fs.h:764 [inline]
 __ocfs2_flush_truncate_log+0x36a/0x1220 fs/ocfs2/alloc.c:6046
 ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6076 [inline]
 ocfs2_try_to_free_truncate_log+0x1a7/0x370 fs/ocfs2/alloc.c:6135
 ocfs2_write_begin_nolock+0x3306/0x4590 fs/ocfs2/aops.c:1872
 ocfs2_dio_wr_get_block+0xba4/0x1810 fs/ocfs2/aops.c:2241
 get_more_blocks fs/direct-io.c:659 [inline]
 do_direct_IO fs/direct-io.c:947 [inline]
 __blockdev_direct_IO+0x171f/0x34c0 fs/direct-io.c:1260
 ocfs2_direct_IO+0x233/0x2a0 fs/ocfs2/aops.c:2488
 generic_file_direct_write+0x112/0x330 mm/filemap.c:3787
 __generic_file_write_iter+0x15f/0x2a0 mm/filemap.c:3945
 ocfs2_file_write_iter+0x1731/0x1fc0 fs/ocfs2/file.c:2469
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x638/0xb10 fs/read_write.c:861
 iter_file_splice_write+0x6be/0xcf0 fs/splice.c:685
 do_splice_from fs/splice.c:763 [inline]
 direct_splice_actor+0xe1/0x130 fs/splice.c:950
 splice_direct_to_actor+0x4b8/0xbd0 fs/splice.c:896
 do_splice_direct+0x1ce/0x2f0 fs/splice.c:1002
 do_sendfile+0x51b/0xe20 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fdf8279e159
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:00007fdf83711028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fdf82a25fa0 RCX: 00007fdf8279e159
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fdf8283506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdf82a26038 R14: 00007fdf82a25fa0 R15: 00007ffec30fa778
 </TASK>
syz.0.17 (4427) used greatest stack depth: 18208 bytes left