ocfs2: Mounting device (7,7) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.1.122-syzkaller #0 Tainted: G W ------------------------------------------------------ syz.7.996/8281 is trying to acquire lock: ffff888072f394a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 but task is already holding lock: ffff888024062990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f51/0x21b0 fs/jbd2/transaction.c:463 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (jbd2_handle){++++}-{0:0}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 start_this_handle+0x1f71/0x21b0 fs/jbd2/transaction.c:463 jbd2__journal_start+0x2d1/0x5c0 fs/jbd2/transaction.c:520 jbd2_journal_start+0x25/0x30 fs/jbd2/transaction.c:559 ocfs2_start_trans+0x3c0/0x6f0 fs/ocfs2/journal.c:354 ocfs2_shutdown_local_alloc+0x214/0xa90 fs/ocfs2/localalloc.c:416 ocfs2_dismount_volume+0x1fb/0x960 fs/ocfs2/super.c:1879 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1470 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3b5/0x6f0 fs/ocfs2/journal.c:352 ocfs2_shutdown_local_alloc+0x214/0xa90 fs/ocfs2/localalloc.c:416 ocfs2_dismount_volume+0x1fb/0x960 fs/ocfs2/super.c:1879 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1470 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (sb_internal#6){.+.+}-{0:0}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1891 [inline] sb_start_intwrite include/linux/fs.h:2013 [inline] ocfs2_start_trans+0x2b0/0x6f0 fs/ocfs2/journal.c:350 ocfs2_setattr+0xa89/0x1e60 fs/ocfs2/file.c:1263 notify_change+0xce3/0xfc0 fs/attr.c:499 ovl_do_notify_change fs/overlayfs/overlayfs.h:142 [inline] ovl_workdir_create+0x78b/0x9d0 fs/overlayfs/super.c:833 ovl_make_workdir fs/overlayfs/super.c:1389 [inline] ovl_get_workdir+0x3b7/0x17b0 fs/overlayfs/super.c:1539 ovl_fill_super+0x1b85/0x2a20 fs/overlayfs/super.c:2095 mount_nodev+0x52/0xe0 fs/super.c:1489 legacy_get_tree+0xeb/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x2ba/0xb40 fs/namespace.c:3056 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3584 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x436/0x28c0 fs/ocfs2/dir.c:1080 ocfs2_rename+0x23e5/0x4000 fs/ocfs2/namei.c:1568 vfs_rename+0xd32/0x10f0 fs/namei.c:4874 do_renameat2+0xde0/0x1440 fs/namei.c:5027 __do_sys_renameat2 fs/namei.c:5060 [inline] __se_sys_renameat2 fs/namei.c:5057 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5057 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &ocfs2_file_ip_alloc_sem_key --> &journal->j_trans_barrier --> jbd2_handle Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(jbd2_handle); lock(&journal->j_trans_barrier); lock(jbd2_handle); lock(&ocfs2_file_ip_alloc_sem_key); *** DEADLOCK *** 8 locks held by syz.7.996/8281: #0: ffff888027f08460 (sb_writers#27){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393 #1: ffff888027f08748 (&type->s_vfs_rename_key#2){+.+.}-{3:3}, at: lock_rename fs/namei.c:3038 [inline] #1: ffff888027f08748 (&type->s_vfs_rename_key#2){+.+.}-{3:3}, at: do_renameat2+0x5a0/0x1440 fs/namei.c:4966 #2: ffff888072f3ed88 (&sb->s_type->i_mutex_key#34/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3039 [inline] #2: ffff888072f3ed88 (&sb->s_type->i_mutex_key#34/1){+.+.}-{3:3}, at: do_renameat2+0x61e/0x1440 fs/namei.c:4966 #3: ffff888072f39808 (&sb->s_type->i_mutex_key#34/5){+.+.}-{3:3}, at: do_renameat2+0x65a/0x1440 fs/namei.c:4966 #4: ffff888072f3b488 (&sb->s_type->i_mutex_key#34/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #4: ffff888072f3b488 (&sb->s_type->i_mutex_key#34/2){+.+.}-{3:3}, at: vfs_rename+0x7a2/0x10f0 fs/namei.c:4837 #5: ffff888027f08650 (sb_internal#6){.+.+}-{0:0}, at: ocfs2_rename+0x1eed/0x4000 fs/ocfs2/namei.c:1488 #6: ffff888058736ce8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3b5/0x6f0 fs/ocfs2/journal.c:352 #7: ffff888024062990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f51/0x21b0 fs/jbd2/transaction.c:463 stack backtrace: CPU: 0 PID: 8281 Comm: syz.7.996 Tainted: G W 6.1.122-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x436/0x28c0 fs/ocfs2/dir.c:1080 ocfs2_rename+0x23e5/0x4000 fs/ocfs2/namei.c:1568 vfs_rename+0xd32/0x10f0 fs/namei.c:4874 do_renameat2+0xde0/0x1440 fs/namei.c:5027 __do_sys_renameat2 fs/namei.c:5060 [inline] __se_sys_renameat2 fs/namei.c:5057 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5057 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f6c60385d29 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:00007f6c61113038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f6c60575fa0 RCX: 00007f6c60385d29 RDX: ffffffffffffff9c RSI: 0000000020000400 RDI: ffffffffffffff9c RBP: 00007f6c60401b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6c60575fa0 R15: 00007ffd7cd2c1d8