JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,7) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.7.819/7065 is trying to acquire lock: ffff0000fac7b120 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x23c/0x8c8 fs/ocfs2/extent_map.c:984 but task is already holding lock: ffff0000ca8ee990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfec/0x125c fs/jbd2/transaction.c:461 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+0xa8/0x318 fs/jbd2/transaction.c:880 __ocfs2_flush_truncate_log+0x268/0x10a4 fs/ocfs2/alloc.c:6029 ocfs2_flush_truncate_log+0x4c/0x6c fs/ocfs2/alloc.c:6076 ocfs2_sync_fs+0x100/0x2c0 fs/ocfs2/super.c:402 sync_filesystem+0x1a0/0x218 fs/sync.c:66 generic_shutdown_super+0x74/0x32c fs/super.c:474 kill_block_super+0x78/0xe0 fs/super.c:1470 deactivate_locked_super+0xb4/0x128 fs/super.c:332 deactivate_super+0xe4/0x104 fs/super.c:363 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198 task_work_run+0x1f4/0x280 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_remove_btree_range+0x56c/0x12e8 fs/ocfs2/alloc.c:5742 ocfs2_remove_inode_range+0x14d4/0x2478 fs/ocfs2/file.c:1907 __ocfs2_change_file_space+0x758/0xcf4 fs/ocfs2/file.c:2028 ocfs2_fallocate+0x1f0/0x228 fs/ocfs2/file.c:2138 vfs_fallocate+0x4a4/0x5fc fs/open.c:323 madvise_remove mm/madvise.c:1000 [inline] madvise_vma_behavior mm/madvise.c:1024 [inline] madvise_walk_vmas mm/madvise.c:1259 [inline] do_madvise+0x1450/0x2ad8 mm/madvise.c:1438 __do_sys_madvise mm/madvise.c:1451 [inline] __se_sys_madvise mm/madvise.c:1449 [inline] __arm64_sys_madvise+0xa4/0xc0 mm/madvise.c:1449 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain kernel/locking/lockdep.c:3830 [inline] __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5676 down_read+0x64/0x300 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x23c/0x8c8 fs/ocfs2/extent_map.c:984 ocfs2_read_dir_block+0xd4/0x46c fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1842 [inline] ocfs2_dir_foreach_blk+0x228/0x16a4 fs/ocfs2/dir.c:1928 ocfs2_dir_foreach+0x168/0x1c0 fs/ocfs2/dir.c:1938 ocfs2_empty_dir+0xf4/0x590 fs/ocfs2/dir.c:2156 ocfs2_rename+0x1c64/0x3160 fs/ocfs2/namei.c:1499 vfs_rename+0xb08/0xe3c fs/namei.c:4882 do_renameat2+0x760/0xaa4 fs/namei.c:5035 __do_sys_renameat2 fs/namei.c:5068 [inline] __se_sys_renameat2 fs/namei.c:5065 [inline] __arm64_sys_renameat2+0xe8/0x104 fs/namei.c:5065 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 other info that might help us debug this: Chain exists of: &ocfs2_file_ip_alloc_sem_key --> &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(&ocfs2_file_ip_alloc_sem_key); *** DEADLOCK *** 10 locks held by syz.7.819/7065: #0: ffff0000ca73a460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:402 #1: ffff0000ca73a748 (&type->s_vfs_rename_key#4){+.+.}-{3:3}, at: lock_rename fs/namei.c:3046 [inline] #1: ffff0000ca73a748 (&type->s_vfs_rename_key#4){+.+.}-{3:3}, at: do_renameat2+0x314/0xaa4 fs/namei.c:4974 #2: ffff0000f7d6ed88 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #2: ffff0000f7d6ed88 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_two_directories fs/namei.c:-1 [inline] #2: ffff0000f7d6ed88 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3047 [inline] #2: ffff0000f7d6ed88 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: do_renameat2+0x390/0xaa4 fs/namei.c:4974 #3: ffff0000fac7a648 (&sb->s_type->i_mutex_key#27/5){+.+.}-{3:3}, at: lock_rename include/linux/fs.h:-1 [inline] #3: ffff0000fac7a648 (&sb->s_type->i_mutex_key#27/5){+.+.}-{3:3}, at: do_renameat2+0x3c4/0xaa4 fs/namei.c:4974 #4: ffff0000fac79808 (&sb->s_type->i_mutex_key#27/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #4: ffff0000fac79808 (&sb->s_type->i_mutex_key#27/2){+.+.}-{3:3}, at: vfs_rename+0x648/0xe3c fs/namei.c:4845 #5: ffff0000fac7b488 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #5: ffff0000fac7b488 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: vfs_rename+0x6a8/0xe3c fs/namei.c:4847 #6: ffff0000f7d69808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #6: ffff0000f7d69808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_lookup_lock_orphan_dir+0xc8/0x288 fs/ocfs2/namei.c:2116 #7: ffff0000ca73a650 (sb_internal#6){.+.+}-{0:0}, at: ocfs2_rename+0x1638/0x3160 fs/ocfs2/namei.c:1488 #8: ffff0000cbd560e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x38c/0x6f4 fs/ocfs2/journal.c:374 #9: ffff0000ca8ee990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfec/0x125c fs/jbd2/transaction.c:461 stack backtrace: CPU: 1 PID: 7065 Comm: syz.7.819 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2048 check_noncircular+0x264/0x2f8 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain kernel/locking/lockdep.c:3830 [inline] __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5676 down_read+0x64/0x300 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x23c/0x8c8 fs/ocfs2/extent_map.c:984 ocfs2_read_dir_block+0xd4/0x46c fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1842 [inline] ocfs2_dir_foreach_blk+0x228/0x16a4 fs/ocfs2/dir.c:1928 ocfs2_dir_foreach+0x168/0x1c0 fs/ocfs2/dir.c:1938 ocfs2_empty_dir+0xf4/0x590 fs/ocfs2/dir.c:2156 ocfs2_rename+0x1c64/0x3160 fs/ocfs2/namei.c:1499 vfs_rename+0xb08/0xe3c fs/namei.c:4882 do_renameat2+0x760/0xaa4 fs/namei.c:5035 __do_sys_renameat2 fs/namei.c:5068 [inline] __se_sys_renameat2 fs/namei.c:5065 [inline] __arm64_sys_renameat2+0xe8/0x104 fs/namei.c:5065 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585