syzbot

======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.5.3652/22699 is trying to acquire lock:
ffff888037df33a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline]
ffff888037df33a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733

but task is already holding lock:
ffff888037df4fa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline]
ffff888037df4fa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2ce/0x1250 fs/ocfs2/inode.c:854

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+0x8b/0x1f0 kernel/locking/rwsem.c:1625
       inode_lock include/linux/fs.h:1029 [inline]
       ocfs2_del_inode_from_orphan+0x112/0x700 fs/ocfs2/namei.c:2728
       ocfs2_dio_end_io_write+0x711/0x1130 fs/ocfs2/aops.c:2379
       ocfs2_dio_end_io+0x136/0x2c0 fs/ocfs2/aops.c:2418
       dio_complete+0x224/0x950 fs/direct-io.c:281
       __blockdev_direct_IO+0x2a2d/0x33d0 fs/direct-io.c:1303
       ocfs2_direct_IO+0x263/0x360 fs/ocfs2/aops.c:2455
       generic_file_direct_write+0x198/0x410 mm/filemap.c:4258
       __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4427
       ocfs2_file_write_iter+0xdbb/0x2240 fs/ocfs2/file.c:2476
       do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:829
       vfs_writev+0x360/0xe10 fs/read_write.c:1059
       do_pwritev+0x1ac/0x270 fs/read_write.c:1155
       __do_sys_pwritev2 fs/read_write.c:1213 [inline]
       __se_sys_pwritev2 fs/read_write.c:1204 [inline]
       __x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1204
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1625
       inode_lock include/linux/fs.h:1029 [inline]
       ocfs2_reserve_suballoc_bits+0x11c/0x4b50 fs/ocfs2/suballoc.c:882
       ocfs2_reserve_new_metadata_blocks+0x506/0xbe0 fs/ocfs2/suballoc.c:1078
       ocfs2_mknod+0xead/0x27b0 fs/ocfs2/namei.c:351
       ocfs2_mkdir+0xf2/0x450 fs/ocfs2/namei.c:660
       vfs_mkdir+0x361/0x850 fs/namei.c:5261
       filename_mkdirat+0x48b/0x5e0 fs/namei.c:5294
       __do_sys_mkdirat fs/namei.c:5315 [inline]
       __se_sys_mkdirat fs/namei.c:5312 [inline]
       __x64_sys_mkdirat+0x89/0xc0 fs/namei.c:5312
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[INODE_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+0x14b8/0x2630 kernel/locking/lockdep.c:5237
       lock_acquire kernel/locking/lockdep.c:5868 [inline]
       lock_acquire+0x1b1/0x370 kernel/locking/lockdep.c:5825
       down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1625
       inode_lock include/linux/fs.h:1029 [inline]
       ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733
       ocfs2_wipe_inode+0x6dd/0x1250 fs/ocfs2/inode.c:896
       ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]
       ocfs2_evict_inode+0x7f9/0x1550 fs/ocfs2/inode.c:1299
       evict+0x3c2/0xad0 fs/inode.c:841
       iput_final fs/inode.c:1960 [inline]
       iput.part.0+0x605/0xf50 fs/inode.c:2009
       iput+0x35/0x40 fs/inode.c:1975
       ocfs2_dentry_iput+0x139/0x330 fs/ocfs2/dcache.c:407
       dentry_unlink_inode+0x282/0x490 fs/dcache.c:465
       __dentry_kill+0x1d0/0x600 fs/dcache.c:670
       finish_dput+0x76/0x480 fs/dcache.c:879
       dput.part.0+0x456/0x570 fs/dcache.c:928
       dput+0x1f/0x30 fs/dcache.c:920
       __fput+0x519/0xb50 fs/file_table.c:518
       task_work_run+0x150/0x240 kernel/task_work.c:233
       exit_task_work include/linux/task_work.h:40 [inline]
       do_exit+0x8d2/0x2a60 kernel/exit.c:975
       do_group_exit+0xd5/0x2a0 kernel/exit.c:1117
       get_signal+0x1ec7/0x21e0 kernel/signal.c:3037
       arch_do_signal_or_restart+0x91/0x7a0 arch/x86/kernel/signal.c:337
       __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
       exit_to_user_mode_loop+0x86/0x4a0 kernel/entry/common.c:98
       __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
       syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline]
       syscall_exit_to_user_mode include/linux/entry-common.h:328 [inline]
       do_syscall_64+0x706/0xf80 arch/x86/entry/syscall_64.c:100
       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 ***

2 locks held by syz.5.3652/22699:
 #0: ffff8880554b8bc0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0xe4/0x2e0 fs/ocfs2/dlmglue.c:2875
 #1: ffff888037df4fa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline]
 #1: ffff888037df4fa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2ce/0x1250 fs/ocfs2/inode.c:854

stack backtrace:
CPU: 1 UID: 0 PID: 22699 Comm: syz.5.3652 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043
 check_noncircular+0x146/0x160 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237
 lock_acquire kernel/locking/lockdep.c:5868 [inline]
 lock_acquire+0x1b1/0x370 kernel/locking/lockdep.c:5825
 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1625
 inode_lock include/linux/fs.h:1029 [inline]
 ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733
 ocfs2_wipe_inode+0x6dd/0x1250 fs/ocfs2/inode.c:896
 ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]
 ocfs2_evict_inode+0x7f9/0x1550 fs/ocfs2/inode.c:1299
 evict+0x3c2/0xad0 fs/inode.c:841
 iput_final fs/inode.c:1960 [inline]
 iput.part.0+0x605/0xf50 fs/inode.c:2009
 iput+0x35/0x40 fs/inode.c:1975
 ocfs2_dentry_iput+0x139/0x330 fs/ocfs2/dcache.c:407
 dentry_unlink_inode+0x282/0x490 fs/dcache.c:465
 __dentry_kill+0x1d0/0x600 fs/dcache.c:670
 finish_dput+0x76/0x480 fs/dcache.c:879
 dput.part.0+0x456/0x570 fs/dcache.c:928
 dput+0x1f/0x30 fs/dcache.c:920
 __fput+0x519/0xb50 fs/file_table.c:518
 task_work_run+0x150/0x240 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x8d2/0x2a60 kernel/exit.c:975
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1117
 get_signal+0x1ec7/0x21e0 kernel/signal.c:3037
 arch_do_signal_or_restart+0x91/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x86/0x4a0 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:328 [inline]
 do_syscall_64+0x706/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcab219c819
Code: Unable to access opcode bytes at 0x7fcab219c7ef.
RSP: 002b:00007fcab30f1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: 0000000000000000 RBX: 00007fcab2416090 RCX: 00007fcab219c819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000200
RBP: 00007fcab2232c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcab2416128 R14: 00007fcab2416090 R15: 00007ffeb7c32458
 </TASK>