ocfs2: Mounting device (7,6) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.6.324/8528 is trying to acquire lock: ffff0000e124a2e0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_xattr_ibody_find+0x100/0x668 fs/ocfs2/xattr.c:2719 but task is already holding lock: ffff0000e124a378 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set_handle+0x2a8/0x5e4 fs/ocfs2/xattr.c:3531 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_xattr_sem){++++}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 ocfs2_xattr_set_handle+0x2a8/0x5e4 fs/ocfs2/xattr.c:3531 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7337 ocfs2_mknod+0x104c/0x1cf0 fs/ocfs2/namei.c:423 ocfs2_create+0x178/0x474 fs/ocfs2/namei.c:677 lookup_open fs/namei.c:4440 [inline] open_last_lookups fs/namei.c:4540 [inline] path_openat+0x143c/0x3114 fs/namei.c:4784 do_filp_open+0x18c/0x36c fs/namei.c:4814 do_sys_openat2+0x11c/0x1f0 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1447 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #3 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x308 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x35c/0x6b0 fs/ocfs2/journal.c:372 ocfs2_shutdown_local_alloc+0x1ac/0x7e4 fs/ocfs2/localalloc.c:417 ocfs2_dismount_volume+0x1cc/0x8c4 fs/ocfs2/super.c:1825 ocfs2_put_super+0xd4/0x320 fs/ocfs2/super.c:1553 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1722 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1318 __cleanup_mnt+0x20/0x30 fs/namespace.c:1325 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #2 (sb_internal#5){.+.+}-{0:0}: percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs/super.h:19 [inline] sb_start_intwrite include/linux/fs/super.h:177 [inline] ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_xattr_free_block fs/ocfs2/xattr.c:2563 [inline] ocfs2_xattr_remove+0x7fc/0x10cc fs/ocfs2/xattr.c:2630 ocfs2_wipe_inode fs/ocfs2/inode.c:884 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x11d8/0x3c38 fs/ocfs2/inode.c:1299 evict+0x4e0/0xa74 fs/inode.c:837 iput_final fs/inode.c:1951 [inline] iput+0xc54/0xfdc fs/inode.c:2003 ocfs2_dentry_iput+0x1d4/0x2d4 fs/ocfs2/dcache.c:407 dentry_unlink_inode+0x36c/0x45c fs/dcache.c:465 __dentry_kill+0x170/0x594 fs/dcache.c:670 finish_dput+0xe4/0x45c fs/dcache.c:879 dput+0x184/0x188 fs/dcache.c:928 __fput+0x51c/0x75c fs/file_table.c:476 ____fput+0x20/0x58 fs/file_table.c:496 task_work_run+0x1dc/0x260 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x52c/0x1a1c kernel/exit.c:971 do_group_exit+0x194/0x22c kernel/exit.c:1112 get_signal+0x11dc/0x12f8 kernel/signal.c:3034 arch_do_signal_or_restart+0x268/0x46d4 arch/arm64/kernel/signal.c:1619 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x88/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_reserve_suballoc_bits+0x130/0x3ea0 fs/ocfs2/suballoc.c:789 ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:985 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2866 [inline] ocfs2_extend_dir+0x958/0x3964 fs/ocfs2/dir.c:3228 ocfs2_prepare_dir_for_insert+0x27ec/0x446c fs/ocfs2/dir.c:4346 ocfs2_mknod+0x6d4/0x1cf0 fs/ocfs2/namei.c:298 ocfs2_create+0x178/0x474 fs/ocfs2/namei.c:677 lookup_open fs/namei.c:4440 [inline] open_last_lookups fs/namei.c:4540 [inline] path_openat+0x143c/0x3114 fs/namei.c:4784 do_filp_open+0x18c/0x36c fs/namei.c:4814 do_sys_openat2+0x11c/0x1f0 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1447 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868 down_read+0x58/0x308 kernel/locking/rwsem.c:1537 ocfs2_xattr_ibody_find+0x100/0x668 fs/ocfs2/xattr.c:2719 ocfs2_xattr_set_handle+0x2bc/0x5e4 fs/ocfs2/xattr.c:3533 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7337 ocfs2_mknod+0x104c/0x1cf0 fs/ocfs2/namei.c:423 ocfs2_mkdir+0x178/0x474 fs/ocfs2/namei.c:660 vfs_mkdir+0x408/0x48c fs/namei.c:5130 do_mkdirat+0x238/0x448 fs/namei.c:5164 __do_sys_mkdirat fs/namei.c:5186 [inline] __se_sys_mkdirat fs/namei.c:5184 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:5184 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 other info that might help us debug this: Chain exists of: &ocfs2_file_ip_alloc_sem_key --> &journal->j_trans_barrier --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(&journal->j_trans_barrier); lock(&oi->ip_xattr_sem); rlock(&ocfs2_file_ip_alloc_sem_key); *** DEADLOCK *** 9 locks held by syz.6.324/8528: #0: ffff0000fc3de420 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000f3a29800 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1072 [inline] #1: ffff0000f3a29800 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2864 [inline] #1: ffff0000f3a29800 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: start_dirop fs/namei.c:2875 [inline] #1: ffff0000f3a29800 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: filename_create+0x1a4/0x2d8 fs/namei.c:4879 #2: ffff0000f39ed100 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #2: ffff0000f39ed100 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x130/0x3ea0 fs/ocfs2/suballoc.c:789 #3: ffff0000f39edf40 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #3: ffff0000f39edf40 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x130/0x3ea0 fs/ocfs2/suballoc.c:789 #4: ffff0001026389c0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #4: ffff0001026389c0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x104/0x26a8 fs/ocfs2/localalloc.c:636 #5: ffff0000fc3de610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_mknod+0xc30/0x1cf0 fs/ocfs2/namei.c:365 #6: ffff0000df3568e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x35c/0x6b0 fs/ocfs2/journal.c:372 #7: ffff0000dcba4950 (jbd2_handle#2){.+.+}-{0:0}, at: start_this_handle+0xe4c/0x10dc fs/jbd2/transaction.c:442 #8: ffff0000e124a378 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set_handle+0x2a8/0x5e4 fs/ocfs2/xattr.c:3531 stack backtrace: CPU: 1 UID: 0 PID: 8528 Comm: syz.6.324 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2043 check_noncircular+0x154/0x174 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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868 down_read+0x58/0x308 kernel/locking/rwsem.c:1537 ocfs2_xattr_ibody_find+0x100/0x668 fs/ocfs2/xattr.c:2719 ocfs2_xattr_set_handle+0x2bc/0x5e4 fs/ocfs2/xattr.c:3533 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7337 ocfs2_mknod+0x104c/0x1cf0 fs/ocfs2/namei.c:423 ocfs2_mkdir+0x178/0x474 fs/ocfs2/namei.c:660 vfs_mkdir+0x408/0x48c fs/namei.c:5130 do_mkdirat+0x238/0x448 fs/namei.c:5164 __do_sys_mkdirat fs/namei.c:5186 [inline] __se_sys_mkdirat fs/namei.c:5184 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:5184 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596