======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz-executor/5615 is trying to acquire lock:
ffff88801fcf41a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1539/0x43b0

but task is already holding lock:
ffff88801fcf5da0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xe97/0x43b0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x96/0x200
       ocfs2_del_inode_from_orphan+0x12e/0x7a0
       ocfs2_dio_end_io+0xf9c/0x1370
       dio_complete+0x25b/0x760
       __blockdev_direct_IO+0x2e5d/0x34e0
       ocfs2_direct_IO+0x251/0x2c0
       generic_file_direct_write+0x1db/0x3e0
       __generic_file_write_iter+0x11d/0x230
       ocfs2_file_write_iter+0x1663/0x1e70
       iter_file_splice_write+0x9a1/0x10f0
       direct_splice_actor+0x101/0x160
       splice_direct_to_actor+0x53a/0xc70
       do_splice_direct+0x195/0x290
       do_sendfile+0x535/0x7d0
       __se_sys_sendfile64+0x144/0x1a0
       do_syscall_64+0x15f/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x96/0x200
       ocfs2_reserve_suballoc_bits+0x16d/0x4840
       ocfs2_reserve_new_metadata_blocks+0x415/0x9a0
       ocfs2_mknod+0x10f3/0x2260
       ocfs2_mkdir+0x181/0x460
       vfs_mkdir+0x413/0x630
       filename_mkdirat+0x285/0x510
       __se_sys_mkdirat+0x35/0x150
       do_syscall_64+0x15f/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       __lock_acquire+0x15a5/0x2cf0
       lock_acquire+0x106/0x350
       down_write+0x96/0x200
       ocfs2_evict_inode+0x1539/0x43b0
       evict+0x61e/0xb10
       vfs_rmdir+0x42a/0x6e0
       filename_rmdir+0x292/0x520
       __se_sys_unlinkat+0x71/0x1a0
       do_syscall_64+0x15f/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
                               lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]);
                               lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
  lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);

 *** DEADLOCK ***

4 locks held by syz-executor/5615:
 #0: ffff888112e4a410 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881202da5a0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_rmdir+0x1cd/0x520
 #2: ffff888116224bc0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0x106/0x270
 #3: ffff88801fcf5da0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xe97/0x43b0

stack backtrace:
CPU: 0 UID: 0 PID: 5615 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_circular_bug+0x2e1/0x300
 check_noncircular+0x12e/0x150
 __lock_acquire+0x15a5/0x2cf0
 lock_acquire+0x106/0x350
 down_write+0x96/0x200
 ocfs2_evict_inode+0x1539/0x43b0
 evict+0x61e/0xb10
 vfs_rmdir+0x42a/0x6e0
 filename_rmdir+0x292/0x520
 __se_sys_unlinkat+0x71/0x1a0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe40b99bef7
Code: 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 07 01 00 00 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:00007ffe1791bd48 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007fe40b99bef7
RDX: 0000000000000200 RSI: 00007ffe1791cef0 RDI: 00000000ffffff9c
RBP: 00007fe40ba32120 R08: 0000000000101000 R09: 0000000000000000
R10: 0000000000000022 R11: 0000000000000207 R12: 00007ffe1791cef0
R13: 00007fe40ba32120 R14: 00000000000159d6 R15: 00007ffe1791f0b0
 </TASK>
ocfs2: Unmounting device (7,2) on (node local)
syz-executor: attempt to access beyond end of device
loop2: rw=2049, sector=45096, nr_sectors = 24 limit=40427
CPU: 0 UID: 0 PID: 5615 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 f2fs_stop_checkpoint+0x3c7/0x590
 f2fs_write_end_io+0x1274/0x1740
 __submit_merged_bio+0x256/0x6a0
 __submit_merged_write_cond+0x3c9/0x4e0
 f2fs_write_data_pages+0x287e/0x34f0
 do_writepages+0x32e/0x550
 filemap_fdatawrite+0x1e9/0x2f0
 f2fs_sync_dirty_inodes+0x30e/0x830
 f2fs_write_checkpoint+0x9df/0x26a0
 kill_f2fs_super+0x314/0x730
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe40b99e017
Code: a2 c7 05 dc 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe1791df28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe40ba32120 RCX: 00007fe40b99e017
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe1791dfe0
RBP: 00007ffe1791dfe0 R08: 00007ffe1791efe0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe1791f070
R13: 00007fe40ba32120 R14: 0000000000015e45 R15: 00007ffe1791f0b0
 </TASK>
F2FS-fs (loop2): Stopped filesystem due to reason: 3
CPU: 0 UID: 0 PID: 5615 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 f2fs_stop_checkpoint+0x3c7/0x590
 f2fs_write_end_io+0x1274/0x1740
 __submit_merged_bio+0x256/0x6a0
 __submit_merged_write_cond+0x3c9/0x4e0
 f2fs_write_data_pages+0x287e/0x34f0
 do_writepages+0x32e/0x550
 filemap_fdatawrite+0x1e9/0x2f0
 f2fs_sync_dirty_inodes+0x30e/0x830
 f2fs_write_checkpoint+0x9df/0x26a0
 kill_f2fs_super+0x314/0x730
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe40b99e017
Code: a2 c7 05 dc 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe1791df28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe40ba32120 RCX: 00007fe40b99e017
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe1791dfe0
RBP: 00007ffe1791dfe0 R08: 00007ffe1791efe0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe1791f070
R13: 00007fe40ba32120 R14: 0000000000015e45 R15: 00007ffe1791f0b0
 </TASK>
F2FS-fs (loop2): Stopped filesystem due to reason: 3
CPU: 0 UID: 0 PID: 5615 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 f2fs_stop_checkpoint+0x3c7/0x590
 f2fs_write_end_io+0x1274/0x1740
 __submit_merged_bio+0x256/0x6a0
 __submit_merged_write_cond+0x3c9/0x4e0
 f2fs_write_data_pages+0x287e/0x34f0
 do_writepages+0x32e/0x550
 filemap_fdatawrite+0x1e9/0x2f0
 f2fs_sync_dirty_inodes+0x30e/0x830
 f2fs_write_checkpoint+0x9df/0x26a0
 kill_f2fs_super+0x314/0x730
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe40b99e017
Code: a2 c7 05 dc 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe1791df28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe40ba32120 RCX: 00007fe40b99e017
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe1791dfe0
RBP: 00007ffe1791dfe0 R08: 00007ffe1791efe0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe1791f070
R13: 00007fe40ba32120 R14: 0000000000015e45 R15: 00007ffe1791f0b0
 </TASK>
F2FS-fs (loop2): Stopped filesystem due to reason: 3
