====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.4.2502/16069 is trying to acquire lock: ffff88805189ce38 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_calc_xattr_init+0x20a/0xd90 fs/ocfs2/xattr.c:631 but task is already holding lock: ffff8880553bed80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] ffff8880553bed80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16f/0x4790 fs/ocfs2/suballoc.c:789 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x96/0x200 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x1539/0x42e0 fs/ocfs2/inode.c:1299 evict+0x61e/0xb10 fs/inode.c:837 d_delete_notify include/linux/fsnotify.h:377 [inline] vfs_rmdir+0x3f1/0x660 fs/namei.c:5258 do_rmdir+0x278/0x470 fs/namei.c:5300 __do_sys_unlinkat fs/namei.c:5477 [inline] __se_sys_unlinkat fs/namei.c:5471 [inline] __x64_sys_unlinkat+0xc2/0xf0 fs/namei.c:5471 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x96/0x200 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_del_inode_from_orphan+0x12e/0x7a0 fs/ocfs2/namei.c:2731 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2306 [inline] ocfs2_dio_end_io+0x543/0x1210 fs/ocfs2/aops.c:2404 dio_complete+0x25b/0x790 fs/direct-io.c:281 __blockdev_direct_IO+0x2cb0/0x32f0 fs/direct-io.c:1303 ocfs2_direct_IO+0x251/0x2c0 fs/ocfs2/aops.c:2441 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4248 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4417 ocfs2_file_write_iter+0x1663/0x1e20 fs/ocfs2/file.c:2475 do_iter_readv_writev+0x619/0x8c0 fs/read_write.c:-1 vfs_writev+0x33c/0x990 fs/read_write.c:1057 do_writev+0x154/0x2e0 fs/read_write.c:1103 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}: down_write+0x96/0x200 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xb6/0x340 fs/ocfs2/refcounttree.c:933 ocfs2_truncate_file+0xdf3/0x1480 fs/ocfs2/file.c:521 ocfs2_recover_orphans fs/ocfs2/journal.c:2335 [inline] ocfs2_complete_recovery+0x127d/0x2190 fs/ocfs2/journal.c:1366 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340 worker_thread+0xda6/0x1360 kernel/workqueue.c:3421 kthread+0x726/0x8b0 kernel/kthread.c:463 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 -> #0 (&oi->ip_xattr_sem){++++}-{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+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868 down_read+0x47/0x2e0 kernel/locking/rwsem.c:1537 ocfs2_calc_xattr_init+0x20a/0xd90 fs/ocfs2/xattr.c:631 ocfs2_mknod+0xd07/0x2210 fs/ocfs2/namei.c:334 ocfs2_mkdir+0x181/0x430 fs/ocfs2/namei.c:660 vfs_mkdir+0x753/0x870 fs/namei.c:5139 do_mkdirat+0x27d/0x4b0 fs/namei.c:5173 __do_sys_mkdirat fs/namei.c:5195 [inline] __se_sys_mkdirat fs/namei.c:5193 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:5193 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &oi->ip_xattr_sem --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]); rlock(&oi->ip_xattr_sem); *** DEADLOCK *** 3 locks held by syz.4.2502/16069: #0: ffff88806199a420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:499 #1: ffff88805189d100 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1072 [inline] #1: ffff88805189d100 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2873 [inline] #1: ffff88805189d100 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: start_dirop fs/namei.c:2884 [inline] #1: ffff88805189d100 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: filename_create+0x200/0x370 fs/namei.c:4888 #2: ffff8880553bed80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #2: ffff8880553bed80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16f/0x4790 fs/ocfs2/suballoc.c:789 stack backtrace: CPU: 0 UID: 0 PID: 16069 Comm: syz.4.2502 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043 check_noncircular+0x12e/0x150 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+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868 down_read+0x47/0x2e0 kernel/locking/rwsem.c:1537 ocfs2_calc_xattr_init+0x20a/0xd90 fs/ocfs2/xattr.c:631 ocfs2_mknod+0xd07/0x2210 fs/ocfs2/namei.c:334 ocfs2_mkdir+0x181/0x430 fs/ocfs2/namei.c:660 vfs_mkdir+0x753/0x870 fs/namei.c:5139 do_mkdirat+0x27d/0x4b0 fs/namei.c:5173 __do_sys_mkdirat fs/namei.c:5195 [inline] __se_sys_mkdirat fs/namei.c:5193 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:5193 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe5fc199d97 Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 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:00007fe5fd084e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007fe5fd084ee0 RCX: 00007fe5fc199d97 RDX: 00000000000001ff RSI: 0000200000000280 RDI: 00000000ffffff9c RBP: 0000200000000040 R08: 00002000000007c0 R09: 0000000000000000 R10: 0000200000000040 R11: 0000000000000246 R12: 0000200000000280 R13: 00007fe5fd084ea0 R14: 0000000000000000 R15: 0000000000000000