debugfs: Directory 'B1DE653C5FFC4D88B33B244AAB9EB3E9' with parent 'ocfs2' already present! ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.12.0-next-20241119-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.21/6009 is trying to acquire lock: ffff888060922378 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_calc_xattr_init+0x208/0xd70 fs/ocfs2/xattr.c:627 but task is already holding lock: ffff88807b23a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] ffff88807b23a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x192/0x4eb0 fs/ocfs2/suballoc.c:786 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:818 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:655 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:818 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline] ocfs2_evict_inode+0x209f/0x4680 fs/ocfs2/inode.c:1216 evict+0x4e8/0x9a0 fs/inode.c:796 d_delete_notify include/linux/fsnotify.h:332 [inline] vfs_rmdir+0x3d7/0x510 fs/namei.c:4407 do_rmdir+0x3b5/0x580 fs/namei.c:4453 __do_sys_unlinkat fs/namei.c:4629 [inline] __se_sys_unlinkat fs/namei.c:4623 [inline] __x64_sys_unlinkat+0xde/0xf0 fs/namei.c:4623 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:818 [inline] ocfs2_del_inode_from_orphan+0x159/0x800 fs/ocfs2/namei.c:2726 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2329 [inline] ocfs2_dio_end_io+0x55b/0x1250 fs/ocfs2/aops.c:2427 dio_complete+0x251/0x6b0 fs/direct-io.c:281 __blockdev_direct_IO+0x3eb6/0x4890 fs/direct-io.c:1303 ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2464 generic_file_direct_write+0x1e6/0x400 mm/filemap.c:3978 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4142 ocfs2_file_write_iter+0x19c8/0x21b0 fs/ocfs2/file.c:2469 aio_write+0x56b/0x7c0 fs/aio.c:1633 io_submit_one+0x8a7/0x18a0 fs/aio.c:2052 __do_sys_io_submit fs/aio.c:2111 [inline] __se_sys_io_submit+0x171/0x2e0 fs/aio.c:2081 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&oi->ip_alloc_sem){++++}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 ocfs2_try_remove_refcount_tree+0xb6/0x330 fs/ocfs2/refcounttree.c:932 ocfs2_truncate_file+0xe0d/0x1560 fs/ocfs2/file.c:521 ocfs2_setattr+0x1890/0x1f00 fs/ocfs2/file.c:1212 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x220/0x310 fs/open.c:65 do_coredump+0x27f2/0x2e60 fs/coredump.c:735 get_signal+0x140b/0x1750 kernel/signal.c:3001 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] irqentry_exit_to_user_mode+0x7e/0x250 kernel/entry/common.c:231 exc_page_fault+0x590/0x8c0 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 -> #0 (&oi->ip_xattr_sem){++++}-{4:4}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 ocfs2_calc_xattr_init+0x208/0xd70 fs/ocfs2/xattr.c:627 ocfs2_mknod+0x1231/0x2b40 fs/ocfs2/namei.c:328 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3649 [inline] open_last_lookups fs/namei.c:3748 [inline] path_openat+0x1c03/0x3590 fs/namei.c:3984 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 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[args->fi_sysfile_type] --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); rlock(&oi->ip_xattr_sem); *** DEADLOCK *** 3 locks held by syz.0.21/6009: #0: ffff8880614f6420 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff888060922640 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #1: ffff888060922640 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: open_last_lookups fs/namei.c:3745 [inline] #1: ffff888060922640 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: path_openat+0x89a/0x3590 fs/namei.c:3984 #2: ffff88807b23a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #2: ffff88807b23a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x192/0x4eb0 fs/ocfs2/suballoc.c:786 stack backtrace: CPU: 0 UID: 0 PID: 6009 Comm: syz.0.21 Not tainted 6.12.0-next-20241119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 ocfs2_calc_xattr_init+0x208/0xd70 fs/ocfs2/xattr.c:627 ocfs2_mknod+0x1231/0x2b40 fs/ocfs2/namei.c:328 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3649 [inline] open_last_lookups fs/namei.c:3748 [inline] path_openat+0x1c03/0x3590 fs/namei.c:3984 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f513877e759 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5139664038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f5138935f80 RCX: 00007f513877e759 RDX: 0000000000000000 RSI: 0000000000060840 RDI: 00000000209e1000 RBP: 00007f51387f175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5138935f80 R15: 00007ffdac039ef8