ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. netlink: 64 bytes leftover after parsing attributes in process `syz.2.121'. ====================================================== WARNING: possible circular locking dependency detected 6.1.123-syzkaller #0 Not tainted ------------------------------------------------------ syz.2.121/5152 is trying to acquire lock: ffff0000f3ca14a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x2bc/0x9f8 fs/ocfs2/extent_map.c:976 but task is already holding lock: ffff0000f0c4e990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1118/0x13ac fs/jbd2/transaction.c:461 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1140/0x13ac fs/jbd2/transaction.c:463 jbd2__journal_start+0x298/0x544 fs/jbd2/transaction.c:520 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:559 ocfs2_start_trans+0x3e8/0x73c fs/ocfs2/journal.c:354 ocfs2_modify_bh+0xe4/0x484 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1220/0x15bc fs/ocfs2/quota_local.c:768 dquot_load_quota_sb+0x6f0/0xb1c fs/quota/dquot.c:2470 dquot_load_quota_inode+0x280/0x4f4 fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x17c/0x3cc fs/ocfs2/super.c:926 ocfs2_fill_super+0x3aa4/0x48c4 fs/ocfs2/super.c:1139 mount_bdev+0x274/0x370 fs/super.c:1443 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x64/0x308 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3dc/0x73c fs/ocfs2/journal.c:352 ocfs2_modify_bh+0xe4/0x484 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1220/0x15bc fs/ocfs2/quota_local.c:768 dquot_load_quota_sb+0x6f0/0xb1c fs/quota/dquot.c:2470 dquot_load_quota_inode+0x280/0x4f4 fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x17c/0x3cc fs/ocfs2/super.c:926 ocfs2_fill_super+0x3aa4/0x48c4 fs/ocfs2/super.c:1139 mount_bdev+0x274/0x370 fs/super.c:1443 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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 -> #1 (sb_internal#2){.+.+}-{0:0}: 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+0x260/0x73c fs/ocfs2/journal.c:350 ocfs2_setattr+0xd34/0x1b5c fs/ocfs2/file.c:1263 notify_change+0xb58/0xe1c fs/attr.c:499 ovl_do_notify_change fs/overlayfs/overlayfs.h:142 [inline] ovl_workdir_create+0x5d0/0x7c8 fs/overlayfs/super.c:833 ovl_make_workdir fs/overlayfs/super.c:1389 [inline] ovl_get_workdir+0x354/0x13d4 fs/overlayfs/super.c:1539 ovl_fill_super+0x15b4/0x2254 fs/overlayfs/super.c:2095 mount_nodev+0x68/0x104 fs/super.c:1489 ovl_mount+0x3c/0x50 fs/overlayfs/super.c:2186 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 down_read+0x64/0x308 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2bc/0x9f8 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+0x3ac/0x2620 fs/ocfs2/dir.c:1080 ocfs2_rename+0x1cb4/0x3588 fs/ocfs2/namei.c:1568 vfs_rename+0xac8/0xe04 fs/namei.c:4874 do_renameat2+0x9ec/0xe64 fs/namei.c:5027 __do_sys_renameat2 fs/namei.c:5060 [inline] __se_sys_renameat2 fs/namei.c:5057 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5057 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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 --> &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.2.121/5152: #0: ffff0000da7f8460 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff0000da7f8748 (&type->s_vfs_rename_key#2){+.+.}-{3:3}, at: lock_rename fs/namei.c:3038 [inline] #1: ffff0000da7f8748 (&type->s_vfs_rename_key#2){+.+.}-{3:3}, at: do_renameat2+0x498/0xe64 fs/namei.c:4966 #2: ffff0000f3ca3488 (&sb->s_type->i_mutex_key#22/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3039 [inline] #2: ffff0000f3ca3488 (&sb->s_type->i_mutex_key#22/1){+.+.}-{3:3}, at: do_renameat2+0x50c/0xe64 fs/namei.c:4966 #3: ffff0000f3ca1808 (&sb->s_type->i_mutex_key#23/5){+.+.}-{3:3}, at: do_renameat2+0x538/0xe64 fs/namei.c:4966 #4: ffff0000f3ca09c8 (&sb->s_type->i_mutex_key#24/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #4: ffff0000f3ca09c8 (&sb->s_type->i_mutex_key#24/2){+.+.}-{3:3}, at: vfs_rename+0x624/0xe04 fs/namei.c:4837 #5: ffff0000da7f8650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_rename+0x1870/0x3588 fs/ocfs2/namei.c:1488 #6: ffff0000f29388e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3dc/0x73c fs/ocfs2/journal.c:352 #7: ffff0000f0c4e990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1118/0x13ac fs/jbd2/transaction.c:461 stack backtrace: CPU: 0 PID: 5152 Comm: syz.2.121 Not tainted 6.1.123-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2048 check_noncircular+0x2cc/0x378 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 kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 down_read+0x64/0x308 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2bc/0x9f8 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+0x3ac/0x2620 fs/ocfs2/dir.c:1080 ocfs2_rename+0x1cb4/0x3588 fs/ocfs2/namei.c:1568 vfs_rename+0xac8/0xe04 fs/namei.c:4874 do_renameat2+0x9ec/0xe64 fs/namei.c:5027 __do_sys_renameat2 fs/namei.c:5060 [inline] __se_sys_renameat2 fs/namei.c:5057 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5057 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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