loop1: detected capacity change from 0 to 32768 ocfs2: Slot 0 on device (7,1) was already allocated to this node! ocfs2: Mounting device (7,1) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.14.0-syzkaller-13524-gf4d2ef48250a #0 Not tainted ------------------------------------------------------ syz.1.351/7017 is trying to acquire lock: ffff88802a7c2610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ffff88802a7c2610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ffff88802a7c2610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x22a3/0x4e80 fs/ocfs2/aops.c:1648 but task is already holding lock: ffff88807ad914a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_write_begin+0x1d3/0x3a0 fs/ocfs2/aops.c:1880 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_write+0x9c/0x220 kernel/locking/rwsem.c:1577 ocfs2_try_remove_refcount_tree+0xbb/0x350 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0xa51/0x1940 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x4dd/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x24c/0x3c0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_set_acl+0x808/0xa70 fs/posix_acl.c:1133 do_setxattr fs/xattr.c:633 [inline] filename_setxattr+0x355/0x480 fs/xattr.c:665 path_setxattrat+0x3f7/0x4c0 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_read+0xb3/0xa50 kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x39d/0x960 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1c09/0x2b30 fs/ocfs2/namei.c:410 ocfs2_create+0x1ad/0x480 fs/ocfs2/namei.c:673 lookup_open fs/namei.c:3666 [inline] open_last_lookups fs/namei.c:3765 [inline] path_openat+0x194d/0x35d0 fs/namei.c:4001 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_open fs/open.c:1452 [inline] __se_sys_open fs/open.c:1448 [inline] __x64_sys_open+0x226/0x280 fs/open.c:1448 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (jbd2_handle){++++}-{0:0}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 start_this_handle+0x1ee4/0x21a0 fs/jbd2/transaction.c:444 jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x3cd/0x710 fs/ocfs2/journal.c:352 ocfs2_shutdown_local_alloc+0x217/0xab0 fs/ocfs2/localalloc.c:417 ocfs2_dismount_volume+0x204/0x910 fs/ocfs2/super.c:1822 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x422/0x4c0 fs/namespace.c:1435 task_work_run+0x253/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_read+0xb3/0xa50 kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x3c2/0x710 fs/ocfs2/journal.c:350 ocfs2_shutdown_local_alloc+0x217/0xab0 fs/ocfs2/localalloc.c:417 ocfs2_dismount_volume+0x204/0x910 fs/ocfs2/super.c:1822 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x422/0x4c0 fs/namespace.c:1435 task_work_run+0x253/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (sb_internal#4){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 percpu_down_read include/linux/percpu-rwsem.h:52 [inline] __sb_start_write include/linux/fs.h:1783 [inline] sb_start_intwrite include/linux/fs.h:1966 [inline] ocfs2_start_trans+0x2bd/0x710 fs/ocfs2/journal.c:348 ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ocfs2_write_begin_nolock+0x22a3/0x4e80 fs/ocfs2/aops.c:1648 ocfs2_write_begin+0x207/0x3a0 fs/ocfs2/aops.c:1882 generic_perform_write+0x32b/0xa10 mm/filemap.c:4102 ocfs2_file_write_iter+0x190f/0x20d0 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x711/0xd10 fs/read_write.c:684 ksys_write+0x19d/0x2d0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 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: sb_internal#4 --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&oi->ip_xattr_sem); lock(&ocfs2_file_ip_alloc_sem_key); rlock(sb_internal#4); *** DEADLOCK *** 4 locks held by syz.1.351/7017: #0: ffff888032f907f8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x310 fs/file.c:1213 #1: ffff88802a7c2420 (sb_writers#19){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3041 [inline] #1: ffff88802a7c2420 (sb_writers#19){.+.+}-{0:0}, at: vfs_write+0x23f/0xd10 fs/read_write.c:680 #2: ffff88807ad91800 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #2: ffff88807ad91800 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x43c/0x20d0 fs/ocfs2/file.c:2399 #3: ffff88807ad914a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_write_begin+0x1d3/0x3a0 fs/ocfs2/aops.c:1880 stack backtrace: CPU: 0 UID: 0 PID: 7017 Comm: syz.1.351 Not tainted 6.14.0-syzkaller-13524-gf4d2ef48250a #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2079 check_noncircular+0x142/0x160 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 percpu_down_read include/linux/percpu-rwsem.h:52 [inline] __sb_start_write include/linux/fs.h:1783 [inline] sb_start_intwrite include/linux/fs.h:1966 [inline] ocfs2_start_trans+0x2bd/0x710 fs/ocfs2/journal.c:348 ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ocfs2_write_begin_nolock+0x22a3/0x4e80 fs/ocfs2/aops.c:1648 ocfs2_write_begin+0x207/0x3a0 fs/ocfs2/aops.c:1882 generic_perform_write+0x32b/0xa10 mm/filemap.c:4102 ocfs2_file_write_iter+0x190f/0x20d0 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x711/0xd10 fs/read_write.c:684 ksys_write+0x19d/0x2d0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5ae618d169 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:00007f5ae3ff6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f5ae63a5fa0 RCX: 00007f5ae618d169 RDX: 00000000000000a0 RSI: 0000200000000180 RDI: 0000000000000004 RBP: 00007f5ae620e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5ae63a5fa0 R15: 00007fff33ce6168