ocfs2: Slot 0 on device (7,2) was already allocated to this node! JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.2.211/4921 is trying to acquire lock: ffff88805ec0cda0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x240/0x8e0 fs/ocfs2/extent_map.c:984 but task is already holding lock: ffff88805fa98ce8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3a6/0x6f0 fs/ocfs2/journal.c:374 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_start_trans+0x3a6/0x6f0 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe0/0x4c0 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1499/0x1820 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x72f/0xa80 fs/quota/dquot.c:2485 dquot_load_quota_inode+0x2d3/0x5c0 fs/quota/dquot.c:2522 ocfs2_enable_quotas+0x1c0/0x4a0 fs/ocfs2/super.c:927 ocfs2_fill_super+0x3c9f/0x50c0 fs/ocfs2/super.c:1140 mount_bdev+0x28a/0x3c0 fs/super.c:1400 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x247/0xa40 fs/namespace.c:3034 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #1 (sb_internal#2){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1811 [inline] sb_start_intwrite include/linux/fs.h:1928 [inline] ocfs2_start_trans+0x2a7/0x6f0 fs/ocfs2/journal.c:372 ocfs2_setattr+0x103d/0x1b40 fs/ocfs2/file.c:1254 notify_change+0xbc6/0xee0 fs/attr.c:505 chown_common+0x4cc/0x680 fs/open.c:680 do_fchownat+0x147/0x240 fs/open.c:711 __do_sys_lchown fs/open.c:736 [inline] __se_sys_lchown fs/open.c:734 [inline] __x64_sys_lchown+0x81/0x90 fs/open.c:734 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c66/0x7b50 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x240/0x8e0 fs/ocfs2/extent_map.c:984 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x39d/0x1f90 fs/ocfs2/dir.c:1091 ocfs2_rename+0x1e7b/0x3940 fs/ocfs2/namei.c:1568 vfs_rename+0xd57/0x10f0 fs/namei.c:4840 do_renameat2+0x9e9/0xf70 fs/namei.c:4993 __do_sys_renameat2 fs/namei.c:5026 [inline] __se_sys_renameat2 fs/namei.c:5023 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5023 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 other info that might help us debug this: Chain exists of: &ocfs2_file_ip_alloc_sem_key --> sb_internal#2 --> &journal->j_trans_barrier Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&journal->j_trans_barrier); lock(sb_internal#2); lock(&journal->j_trans_barrier); lock(&ocfs2_file_ip_alloc_sem_key); *** DEADLOCK *** 8 locks held by syz.2.211/4921: #0: ffff888078076460 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:386 #1: ffff888078076748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename fs/namei.c:3024 [inline] #1: ffff888078076748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: do_renameat2+0x4aa/0xf70 fs/namei.c:4932 #2: ffff88805ec91808 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #2: ffff88805ec91808 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: lock_two_directories fs/namei.c:-1 [inline] #2: ffff88805ec91808 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3025 [inline] #2: ffff88805ec91808 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: do_renameat2+0x541/0xf70 fs/namei.c:4932 #3: ffff88805ec0d108 (&sb->s_type->i_mutex_key#34/5){+.+.}-{3:3}, at: lock_rename include/linux/fs.h:-1 [inline] #3: ffff88805ec0d108 (&sb->s_type->i_mutex_key#34/5){+.+.}-{3:3}, at: do_renameat2+0x57c/0xf70 fs/namei.c:4932 #4: ffff88805ec0c2c8 (&sb->s_type->i_mutex_key#35/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #4: ffff88805ec0c2c8 (&sb->s_type->i_mutex_key#35/2){+.+.}-{3:3}, at: vfs_rename+0x7b1/0x10f0 fs/namei.c:4803 #5: ffff888078076650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_rename+0x1a51/0x3940 fs/ocfs2/namei.c:1488 #6: ffff88805fa98ce8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3a6/0x6f0 fs/ocfs2/journal.c:374 #7: ffff888020cc8990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x12d5/0x1560 fs/jbd2/transaction.c:462 stack backtrace: CPU: 0 PID: 4921 Comm: syz.2.211 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 check_noncircular+0x296/0x330 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c66/0x7b50 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x240/0x8e0 fs/ocfs2/extent_map.c:984 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x39d/0x1f90 fs/ocfs2/dir.c:1091 ocfs2_rename+0x1e7b/0x3940 fs/ocfs2/namei.c:1568 vfs_rename+0xd57/0x10f0 fs/namei.c:4840 do_renameat2+0x9e9/0xf70 fs/namei.c:4993 __do_sys_renameat2 fs/namei.c:5026 [inline] __se_sys_renameat2 fs/namei.c:5023 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5023 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fcc2f594e99 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcc2d7ed028 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007fcc2f81cfa0 RCX: 00007fcc2f594e99 RDX: 0000000000000004 RSI: 0000200000000240 RDI: 0000000000000004 RBP: 00007fcc2f62aeaf R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000380 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcc2f81d038 R14: 00007fcc2f81cfa0 R15: 00007ffce0810db8