ocfs2: Mounting device (7,2) on (node local, slot 0) with writeback data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.2.247/8151 is trying to acquire lock: ffff0000db2e8618 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1459 [inline] ffff0000db2e8618 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline] ffff0000db2e8618 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x8e4/0x3864 fs/ocfs2/aops.c:1649 but task is already holding lock: ffff0000dd99a2e0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_write_begin+0x190/0x30c fs/ocfs2/aops.c:1882 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}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537 ocfs2_xattr_ibody_find+0x100/0x668 fs/ocfs2/xattr.c:2689 ocfs2_xattr_set_handle+0x2bc/0x5e4 fs/ocfs2/xattr.c:3503 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7307 ocfs2_mknod+0x106c/0x1cf0 fs/ocfs2/namei.c:422 ocfs2_create+0x190/0x474 fs/ocfs2/namei.c:676 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x12d8/0x2c40 fs/namei.c:4043 do_filp_open+0x18c/0x36c fs/namei.c:4073 do_sys_openat2+0x11c/0x1b4 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_openat fs/open.c:1466 [inline] __se_sys_openat fs/open.c:1461 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1461 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537 ocfs2_xattr_get+0xe8/0x220 fs/ocfs2/xattr.c:1338 ocfs2_xattr_security_get+0x40/0x54 fs/ocfs2/xattr.c:7231 __vfs_getxattr+0x394/0x3c0 fs/xattr.c:423 smk_fetch+0xc4/0x150 security/smack/smack_lsm.c:289 smack_d_instantiate+0x53c/0x7a4 security/smack/smack_lsm.c:3606 security_d_instantiate+0x100/0x204 security/security.c:4109 d_instantiate+0x5c/0x9c fs/dcache.c:1961 ocfs2_mknod+0x151c/0x1cf0 fs/ocfs2/namei.c:453 ocfs2_create+0x190/0x474 fs/ocfs2/namei.c:676 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x12d8/0x2c40 fs/namei.c:4043 do_filp_open+0x18c/0x36c fs/namei.c:4073 do_sys_openat2+0x11c/0x1b4 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_openat fs/open.c:1466 [inline] __se_sys_openat fs/open.c:1461 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1461 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0xe74/0x10dc fs/jbd2/transaction.c:444 jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:501 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:540 ocfs2_start_trans+0x368/0x6b0 fs/ocfs2/journal.c:374 ocfs2_shutdown_local_alloc+0x1ac/0x7e4 fs/ocfs2/localalloc.c:417 ocfs2_dismount_volume+0x1ec/0x8cc fs/ocfs2/super.c:1825 ocfs2_put_super+0xec/0x320 fs/ocfs2/super.c:1553 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1766 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1375 __cleanup_mnt+0x20/0x30 fs/namespace.c:1382 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xfc/0x168 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x2f8 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+0x1ec/0x8cc fs/ocfs2/super.c:1825 ocfs2_put_super+0xec/0x320 fs/ocfs2/super.c:1553 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1766 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1375 __cleanup_mnt+0x20/0x30 fs/namespace.c:1382 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xfc/0x168 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #0 (sb_internal#5){.+.+}-{0:0}: 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+0x14c/0x2e0 kernel/locking/lockdep.c:5868 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.h:1799 [inline] sb_start_intwrite include/linux/fs.h:1982 [inline] ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_write_begin_inline fs/ocfs2/aops.c:1459 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline] ocfs2_write_begin_nolock+0x8e4/0x3864 fs/ocfs2/aops.c:1649 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1884 generic_perform_write+0x244/0x7bc mm/filemap.c:4175 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4292 ocfs2_file_write_iter+0x1328/0x1b84 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 other info that might help us debug this: Chain exists of: sb_internal#5 --> &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#5); *** DEADLOCK *** 4 locks held by syz.2.247/8151: #0: ffff0000d85ccef8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x1fc/0x2a0 fs/file.c:1232 #1: ffff0000db2e8428 (sb_writers#23){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3108 [inline] #1: ffff0000db2e8428 (sb_writers#23){.+.+}-{0:0}, at: vfs_write+0x24c/0xa3c fs/read_write.c:682 #2: ffff0000dd99a640 (&sb->s_type->i_mutex_key#27){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline] #2: ffff0000dd99a640 (&sb->s_type->i_mutex_key#27){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x3a0/0x1b84 fs/ocfs2/file.c:2399 #3: ffff0000dd99a2e0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_write_begin+0x190/0x30c fs/ocfs2/aops.c:1882 stack backtrace: CPU: 1 UID: 0 PID: 8151 Comm: syz.2.247 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 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+0x14c/0x2e0 kernel/locking/lockdep.c:5868 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.h:1799 [inline] sb_start_intwrite include/linux/fs.h:1982 [inline] ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_write_begin_inline fs/ocfs2/aops.c:1459 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline] ocfs2_write_begin_nolock+0x8e4/0x3864 fs/ocfs2/aops.c:1649 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1884 generic_perform_write+0x244/0x7bc mm/filemap.c:4175 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4292 ocfs2_file_write_iter+0x1328/0x1b84 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 OCFS2: ERROR (device loop2): int ocfs2_get_clusters_nocache(struct inode *, struct buffer_head *, u32, unsigned int *, struct ocfs2_extent_rec *, unsigned int *): Inode 17058 has bad extent record (0, 1, 0) On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. (syz.2.247,8151,1):ocfs2_get_clusters:634 ERROR: status = -30 (syz.2.247,8151,1):ocfs2_cow_file_pos:359 ERROR: status = -30 (syz.2.247,8151,1):ocfs2_orphan_for_truncate:389 ERROR: status = -30 (syz.2.247,8151,1):ocfs2_truncate_file:502 ERROR: status = -30 (syz.2.247,8151,1):ocfs2_setattr:1217 ERROR: status = -30