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.2.14/4503 is trying to acquire lock: ffff888073aaa2e0 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x265/0x950 fs/ocfs2/extent_map.c:984 but task is already holding lock: ffff88807d774990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f29/0x2150 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}: start_this_handle+0x1f49/0x2150 fs/jbd2/transaction.c:463 jbd2__journal_start+0x2b7/0x5a0 fs/jbd2/transaction.c:520 jbd2_journal_start+0x26/0x30 fs/jbd2/transaction.c:559 ocfs2_start_trans+0x372/0x6c0 fs/ocfs2/journal.c:376 ocfs2_modify_bh+0xe5/0x460 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x13b1/0x16e0 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x756/0xac0 fs/quota/dquot.c:2470 dquot_load_quota_inode+0x2d8/0x5d0 fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x1c3/0x440 fs/ocfs2/super.c:926 ocfs2_fill_super+0x409f/0x4d00 fs/ocfs2/super.c:1139 mount_bdev+0x287/0x3c0 fs/super.c:1443 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x366/0x6c0 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe5/0x460 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x13b1/0x16e0 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x756/0xac0 fs/quota/dquot.c:2470 dquot_load_quota_inode+0x2d8/0x5d0 fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x1c3/0x440 fs/ocfs2/super.c:926 ocfs2_fill_super+0x409f/0x4d00 fs/ocfs2/super.c:1139 mount_bdev+0x287/0x3c0 fs/super.c:1443 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (sb_internal#2){.+.+}-{0:0}: __lock_release kernel/locking/lockdep.c:5376 [inline] lock_release+0x340/0x910 kernel/locking/lockdep.c:5682 up_write+0x29/0x420 kernel/locking/rwsem.c:1625 inode_unlock include/linux/fs.h:763 [inline] ocfs2_free_ac_resource fs/ocfs2/suballoc.c:126 [inline] ocfs2_free_alloc_context+0x93/0x1a0 fs/ocfs2/suballoc.c:140 ocfs2_write_begin_nolock+0x41ea/0x4270 fs/ocfs2/aops.c:1825 ocfs2_write_begin+0x1b8/0x300 fs/ocfs2/aops.c:1904 generic_perform_write+0x2f7/0x5a0 mm/filemap.c:3862 __generic_file_write_iter+0x148/0x2a0 mm/filemap.c:3960 ocfs2_file_write_iter+0x1593/0x1df0 fs/ocfs2/file.c:2469 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x62d/0xaf0 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_pwritev+0x201/0x340 fs/read_write.c:1031 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&oi->ip_alloc_sem){++++}-{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+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x265/0x950 fs/ocfs2/extent_map.c:984 ocfs2_read_dir_block+0xd3/0x4d0 fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1842 [inline] ocfs2_dir_foreach_blk+0x27e/0x1990 fs/ocfs2/dir.c:1928 ocfs2_dir_foreach+0x15d/0x1b0 fs/ocfs2/dir.c:1938 ocfs2_empty_dir+0xfe/0x5f0 fs/ocfs2/dir.c:2156 ocfs2_rename+0x212c/0x3820 fs/ocfs2/namei.c:1499 vfs_rename+0xbbf/0x10d0 fs/namei.c:4882 do_renameat2+0x89d/0xc70 fs/namei.c:5035 __do_sys_rename fs/namei.c:5081 [inline] __se_sys_rename fs/namei.c:5079 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5079 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &oi->ip_alloc_sem --> &journal->j_trans_barrier --> jbd2_handle Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(jbd2_handle); lock(&journal->j_trans_barrier); lock(jbd2_handle); lock(&oi->ip_alloc_sem); *** DEADLOCK *** 10 locks held by syz.2.14/4503: #0: ffff888053eea460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:402 #1: ffff888053eea748 (&type->s_vfs_rename_key#2){+.+.}-{3:3}, at: lock_rename fs/namei.c:3046 [inline] #1: ffff888053eea748 (&type->s_vfs_rename_key#2){+.+.}-{3:3}, at: do_renameat2+0x35b/0xc70 fs/namei.c:4974 #2: ffff88805317df48 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #2: ffff88805317df48 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: lock_two_directories fs/namei.c:-1 [inline] #2: ffff88805317df48 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3047 [inline] #2: ffff88805317df48 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: do_renameat2+0x3ed/0xc70 fs/namei.c:4974 #3: ffff888053109808 (&sb->s_type->i_mutex_key#21/5){+.+.}-{3:3}, at: lock_rename include/linux/fs.h:-1 [inline] #3: ffff888053109808 (&sb->s_type->i_mutex_key#21/5){+.+.}-{3:3}, at: do_renameat2+0x423/0xc70 fs/namei.c:4974 #4: ffff88805310a648 (&sb->s_type->i_mutex_key#21/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #4: ffff88805310a648 (&sb->s_type->i_mutex_key#21/2){+.+.}-{3:3}, at: vfs_rename+0x78c/0x10d0 fs/namei.c:4845 #5: ffff888073aaa648 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #5: ffff888073aaa648 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: vfs_rename+0x81f/0x10d0 fs/namei.c:4847 #6: ffff88806f9e42c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #6: ffff88806f9e42c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_lookup_lock_orphan_dir+0xeb/0x2c0 fs/ocfs2/namei.c:2116 #7: ffff888053eea650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_rename+0x1a0a/0x3820 fs/ocfs2/namei.c:1488 #8: ffff8880269b8ce8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x366/0x6c0 fs/ocfs2/journal.c:374 #9: ffff88807d774990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f29/0x2150 fs/jbd2/transaction.c:463 stack backtrace: CPU: 1 PID: 4503 Comm: syz.2.14 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 check_noncircular+0x274/0x310 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+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x265/0x950 fs/ocfs2/extent_map.c:984 ocfs2_read_dir_block+0xd3/0x4d0 fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1842 [inline] ocfs2_dir_foreach_blk+0x27e/0x1990 fs/ocfs2/dir.c:1928 ocfs2_dir_foreach+0x15d/0x1b0 fs/ocfs2/dir.c:1938 ocfs2_empty_dir+0xfe/0x5f0 fs/ocfs2/dir.c:2156 ocfs2_rename+0x212c/0x3820 fs/ocfs2/namei.c:1499 vfs_rename+0xbbf/0x10d0 fs/namei.c:4882 do_renameat2+0x89d/0xc70 fs/namei.c:5035 __do_sys_rename fs/namei.c:5081 [inline] __se_sys_rename fs/namei.c:5079 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5079 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f4d2a38f749 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:00007f4d2b27c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f4d2a5e5fa0 RCX: 00007f4d2a38f749 RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000200000000000 RBP: 00007f4d2a413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4d2a5e6038 R14: 00007f4d2a5e5fa0 R15: 00007fff5ef30998