====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc2-syzkaller-g2e7aff49b5da #0 Not tainted ------------------------------------------------------ syz.3.197/7679 is trying to acquire lock: ffff0000dd03ea20 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_xattr_ibody_find+0x100/0x65c fs/ocfs2/xattr.c:2689 but task is already holding lock: ffff0000dd03eab8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set_handle+0x40c/0x824 fs/ocfs2/xattr.c:3501 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x2c8/0x764 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1388/0x2438 fs/ocfs2/namei.c:410 ocfs2_create+0x194/0x4d4 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3649 [inline] open_last_lookups fs/namei.c:3748 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3984 do_filp_open+0x1e8/0x404 fs/namei.c:4014 do_sys_openat2+0x124/0x1b8 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1428 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #3 (jbd2_handle){++++}-{0:0}: start_this_handle+0xf34/0x11c4 fs/jbd2/transaction.c:448 jbd2__journal_start+0x298/0x544 fs/jbd2/transaction.c:505 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:544 ocfs2_start_trans+0x3d0/0x71c 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:771 dquot_load_quota_sb+0x6e4/0xb24 fs/quota/dquot.c:2459 dquot_load_quota_inode+0x280/0x4f4 fs/quota/dquot.c:2496 ocfs2_enable_quotas+0x17c/0x3cc fs/ocfs2/super.c:926 ocfs2_fill_super+0x3e30/0x48d0 fs/ocfs2/super.c:1141 mount_bdev+0x1d4/0x2a0 fs/super.c:1693 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1188 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3507 path_mount+0x590/0xe04 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount fs/namespace.c:4034 [inline] __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x3c4/0x71c fs/ocfs2/journal.c:350 ocfs2_modify_bh+0xe4/0x484 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1220/0x15bc fs/ocfs2/quota_local.c:771 dquot_load_quota_sb+0x6e4/0xb24 fs/quota/dquot.c:2459 dquot_load_quota_inode+0x280/0x4f4 fs/quota/dquot.c:2496 ocfs2_enable_quotas+0x17c/0x3cc fs/ocfs2/super.c:926 ocfs2_fill_super+0x3e30/0x48d0 fs/ocfs2/super.c:1141 mount_bdev+0x1d4/0x2a0 fs/super.c:1693 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1188 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3507 path_mount+0x590/0xe04 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount fs/namespace.c:4034 [inline] __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #1 (sb_internal#5){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1725 [inline] sb_start_intwrite include/linux/fs.h:1908 [inline] ocfs2_start_trans+0x244/0x71c fs/ocfs2/journal.c:348 ocfs2_acquire_dquot+0x5c0/0xa90 fs/ocfs2/quota_global.c:855 dqget+0x660/0xcec fs/quota/dquot.c:977 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1505 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1567 ocfs2_get_init_inode+0x14c/0x1c0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x878/0x2438 fs/ocfs2/namei.c:310 ocfs2_create+0x194/0x4d4 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3649 [inline] open_last_lookups fs/namei.c:3748 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3984 do_filp_open+0x1e8/0x404 fs/namei.c:4014 do_sys_openat2+0x124/0x1b8 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1428 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5226 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_xattr_ibody_find+0x100/0x65c fs/ocfs2/xattr.c:2689 ocfs2_xattr_set_handle+0x420/0x824 fs/ocfs2/xattr.c:3503 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7307 ocfs2_mknod+0x1408/0x2438 fs/ocfs2/namei.c:419 ocfs2_create+0x194/0x4d4 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3649 [inline] open_last_lookups fs/namei.c:3748 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3984 do_filp_open+0x1e8/0x404 fs/namei.c:4014 do_sys_openat2+0x124/0x1b8 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1428 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 other info that might help us debug this: Chain exists of: &ocfs2_quota_ip_alloc_sem_key --> jbd2_handle --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(jbd2_handle); lock(&oi->ip_xattr_sem); rlock(&ocfs2_quota_ip_alloc_sem_key); *** DEADLOCK *** 9 locks held by syz.3.197/7679: #0: ffff0000c745a420 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515 #1: ffff0000e0c6ed80 (&type->i_mutex_dir_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #1: ffff0000e0c6ed80 (&type->i_mutex_dir_key#13){+.+.}-{4:4}, at: open_last_lookups fs/namei.c:3745 [inline] #1: ffff0000e0c6ed80 (&type->i_mutex_dir_key#13){+.+.}-{4:4}, at: path_openat+0x684/0x2b14 fs/namei.c:3984 #2: ffff0000e0ca89c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #2: ffff0000e0ca89c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x164/0x4254 fs/ocfs2/suballoc.c:786 #3: ffff0000e0cadf40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #3: ffff0000e0cadf40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x164/0x4254 fs/ocfs2/suballoc.c:786 #4: ffff0000e0cad100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #4: ffff0000e0cad100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x108/0x24cc fs/ocfs2/localalloc.c:636 #5: ffff0000c745a610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_mknod+0xe58/0x2438 fs/ocfs2/namei.c:361 #6: ffff0000d73b6ce8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3c4/0x71c fs/ocfs2/journal.c:350 #7: ffff0000c7938958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf0c/0x11c4 fs/jbd2/transaction.c:446 #8: ffff0000dd03eab8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set_handle+0x40c/0x824 fs/ocfs2/xattr.c:3501 stack backtrace: CPU: 1 UID: 0 PID: 7679 Comm: syz.3.197 Not tainted 6.13.0-rc2-syzkaller-g2e7aff49b5da #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x154/0x1c0 kernel/locking/lockdep.c:2074 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5226 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_xattr_ibody_find+0x100/0x65c fs/ocfs2/xattr.c:2689 ocfs2_xattr_set_handle+0x420/0x824 fs/ocfs2/xattr.c:3503 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7307 ocfs2_mknod+0x1408/0x2438 fs/ocfs2/namei.c:419 ocfs2_create+0x194/0x4d4 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3649 [inline] open_last_lookups fs/namei.c:3748 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3984 do_filp_open+0x1e8/0x404 fs/namei.c:4014 do_sys_openat2+0x124/0x1b8 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1428 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600