ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 5.15.181-syzkaller #0 Not tainted ------------------------------------------------------ syz.4.290/5836 is trying to acquire lock: ffff0000e7c05be0 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x228/0x858 fs/ocfs2/extent_map.c:976 but task is already holding lock: ffff0000db204990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xecc/0x11a4 fs/jbd2/transaction.c:462 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (jbd2_handle){++++}-{0:0}: jbd2_journal_lock_updates+0xb0/0x310 fs/jbd2/transaction.c:881 __ocfs2_flush_truncate_log+0x258/0xf30 fs/ocfs2/alloc.c:6028 ocfs2_flush_truncate_log+0x48/0x68 fs/ocfs2/alloc.c:6075 ocfs2_sync_fs+0xf8/0x2a4 fs/ocfs2/super.c:403 sync_filesystem+0x1a0/0x218 fs/sync.c:66 generic_shutdown_super+0x70/0x2f0 fs/super.c:448 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}: down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_remove_btree_range+0x520/0x11c4 fs/ocfs2/alloc.c:5743 ocfs2_remove_inode_range+0xb44/0x20ec fs/ocfs2/file.c:1910 __ocfs2_change_file_space+0x714/0xc24 fs/ocfs2/file.c:2031 ocfs2_fallocate+0x1f0/0x224 fs/ocfs2/file.c:2141 vfs_fallocate+0x4a4/0x5f4 fs/open.c:308 ioctl_preallocate+0x22c/0x2c8 fs/ioctl.c:294 file_ioctl fs/ioctl.c:-1 [inline] do_vfs_ioctl+0x1a3c/0x2370 fs/ioctl.c:853 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&oi->ip_alloc_sem){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x228/0x858 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block+0xdc/0x454 fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1842 [inline] ocfs2_dir_foreach_blk+0x21c/0x1680 fs/ocfs2/dir.c:1928 ocfs2_dir_foreach fs/ocfs2/dir.c:1938 [inline] ocfs2_empty_dir+0x1c0/0x610 fs/ocfs2/dir.c:2156 ocfs2_rename+0x1ad0/0x2e98 fs/ocfs2/namei.c:1499 vfs_rename+0x954/0xdcc fs/namei.c:4832 do_renameat2+0x74c/0xcdc fs/namei.c:4985 __do_sys_renameat2 fs/namei.c:5018 [inline] __se_sys_renameat2 fs/namei.c:5015 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5015 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Chain exists of: &oi->ip_alloc_sem --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6 --> jbd2_handle Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(jbd2_handle); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6); lock(jbd2_handle); lock(&oi->ip_alloc_sem); *** DEADLOCK *** 10 locks held by syz.4.290/5836: #0: ffff0000cad76460 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff0000cad76748 (&type->s_vfs_rename_key#4){+.+.}-{3:3}, at: lock_rename fs/namei.c:3016 [inline] #1: ffff0000cad76748 (&type->s_vfs_rename_key#4){+.+.}-{3:3}, at: do_renameat2+0x30c/0xcdc fs/namei.c:4924 #2: ffff0000e7f8d108 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #2: ffff0000e7f8d108 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_two_directories fs/namei.c:-1 [inline] #2: ffff0000e7f8d108 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3017 [inline] #2: ffff0000e7f8d108 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: do_renameat2+0x388/0xcdc fs/namei.c:4924 #3: ffff0000e7c042c8 (&sb->s_type->i_mutex_key#32/5){+.+.}-{3:3}, at: lock_rename include/linux/fs.h:-1 [inline] #3: ffff0000e7c042c8 (&sb->s_type->i_mutex_key#32/5){+.+.}-{3:3}, at: do_renameat2+0x3bc/0xcdc fs/namei.c:4924 #4: ffff0000e7c05108 (&sb->s_type->i_mutex_key#32/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #4: ffff0000e7c05108 (&sb->s_type->i_mutex_key#32/2){+.+.}-{3:3}, at: vfs_rename+0x60c/0xdcc fs/namei.c:4795 #5: ffff0000e7c05f48 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #5: ffff0000e7c05f48 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: vfs_rename+0x670/0xdcc fs/namei.c:4797 #6: ffff0000e7f89808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #6: ffff0000e7f89808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_lookup_lock_orphan_dir+0xd0/0x278 fs/ocfs2/namei.c:2116 #7: ffff0000cad76650 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_rename+0x14d8/0x2e98 fs/ocfs2/namei.c:1488 #8: ffff0000e5cb50e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x430/0x794 fs/ocfs2/journal.c:352 #9: ffff0000db204990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xecc/0x11a4 fs/jbd2/transaction.c:462 stack backtrace: CPU: 0 PID: 5836 Comm: syz.4.290 Not tainted 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011 check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x228/0x858 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block+0xdc/0x454 fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1842 [inline] ocfs2_dir_foreach_blk+0x21c/0x1680 fs/ocfs2/dir.c:1928 ocfs2_dir_foreach fs/ocfs2/dir.c:1938 [inline] ocfs2_empty_dir+0x1c0/0x610 fs/ocfs2/dir.c:2156 ocfs2_rename+0x1ad0/0x2e98 fs/ocfs2/namei.c:1499 vfs_rename+0x954/0xdcc fs/namei.c:4832 do_renameat2+0x74c/0xcdc fs/namei.c:4985 __do_sys_renameat2 fs/namei.c:5018 [inline] __se_sys_renameat2 fs/namei.c:5015 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5015 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584