JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.229/6626 is trying to acquire lock: ffff8880548f5f40 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] ffff8880548f5f40 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x11c/0x49f0 fs/ocfs2/suballoc.c:789 but task is already holding lock: ffff8880528186f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2b60 fs/ocfs2/xattr.c:3613 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+0x99/0x460 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x35b/0x840 fs/ocfs2/acl.c:367 ocfs2_mknod+0x1719/0x2750 fs/ocfs2/namei.c:414 ocfs2_create+0xf4/0x3f0 fs/ocfs2/namei.c:677 lookup_open.isra.0+0x139b/0x1890 fs/namei.c:4449 open_last_lookups fs/namei.c:4549 [inline] path_openat+0x117d/0x3120 fs/namei.c:4793 do_filp_open+0x1f7/0x420 fs/namei.c:4823 do_sys_openat2+0x12e/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_creat fs/open.c:1514 [inline] __se_sys_creat fs/open.c:1508 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1508 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x99/0x460 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x5c8/0x920 fs/ocfs2/journal.c:372 ocfs2_modify_bh+0xbe/0x440 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0xd5c/0x1640 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x7c1/0x11d0 fs/quota/dquot.c:2462 dquot_load_quota_inode fs/quota/dquot.c:2499 [inline] dquot_load_quota_inode+0x2a3/0x470 fs/quota/dquot.c:2491 ocfs2_enable_quotas+0x28a/0x5a0 fs/ocfs2/super.c:930 ocfs2_fill_super.cold+0x18f/0x3ac fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1691 vfs_get_tree+0x92/0x320 fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount fs/namespace.c:3712 [inline] path_mount+0x7d0/0x23c0 fs/namespace.c:4022 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount fs/namespace.c:4201 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4201 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (sb_internal#3){.+.+}-{0:0}: percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs/super.h:19 [inline] sb_start_intwrite include/linux/fs/super.h:177 [inline] ocfs2_start_trans+0x4b7/0x920 fs/ocfs2/journal.c:370 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:686 [inline] ocfs2_reserve_suballoc_bits+0x49e/0x49f0 fs/ocfs2/suballoc.c:835 ocfs2_reserve_new_metadata_blocks+0x506/0xbe0 fs/ocfs2/suballoc.c:985 ocfs2_expand_inline_dir.constprop.0+0xe21/0x3fb0 fs/ocfs2/dir.c:2866 ocfs2_extend_dir+0x1dc/0x1bc0 fs/ocfs2/dir.c:3228 ocfs2_prepare_dir_for_insert+0x12e8/0x1730 fs/ocfs2/dir.c:4346 ocfs2_mknod+0x893/0x2750 fs/ocfs2/namei.c:298 ocfs2_create+0xf4/0x3f0 fs/ocfs2/namei.c:677 lookup_open.isra.0+0x139b/0x1890 fs/namei.c:4449 open_last_lookups fs/namei.c:4549 [inline] path_openat+0x117d/0x3120 fs/namei.c:4793 do_filp_open+0x1f7/0x420 fs/namei.c:4823 do_sys_openat2+0x12e/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_creat fs/open.c:1514 [inline] __se_sys_creat fs/open.c:1508 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1508 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_reserve_suballoc_bits+0x11c/0x49f0 fs/ocfs2/suballoc.c:789 ocfs2_reserve_cluster_bitmap_bits+0xd6/0x1e0 fs/ocfs2/suballoc.c:1135 ocfs2_reserve_clusters_with_limit+0x14c/0xe80 fs/ocfs2/suballoc.c:1180 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:675 [inline] ocfs2_reserve_suballoc_bits+0x477/0x49f0 fs/ocfs2/suballoc.c:835 ocfs2_reserve_new_metadata_blocks+0x506/0xbe0 fs/ocfs2/suballoc.c:985 ocfs2_expand_inline_dir.constprop.0+0xe21/0x3fb0 fs/ocfs2/dir.c:2866 ocfs2_extend_dir+0x1dc/0x1bc0 fs/ocfs2/dir.c:3228 ocfs2_prepare_dir_for_insert+0x12e8/0x1730 fs/ocfs2/dir.c:4346 ocfs2_mknod+0x893/0x2750 fs/ocfs2/namei.c:298 ocfs2_create+0xf4/0x3f0 fs/ocfs2/namei.c:677 lookup_open.isra.0+0x139b/0x1890 fs/namei.c:4449 open_last_lookups fs/namei.c:4549 [inline] path_openat+0x117d/0x3120 fs/namei.c:4793 do_filp_open+0x1f7/0x420 fs/namei.c:4823 do_sys_openat2+0x12e/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_creat fs/open.c:1514 [inline] __se_sys_creat fs/open.c:1508 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1508 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x17c/0x330 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_reserve_suballoc_bits+0x11c/0x49f0 fs/ocfs2/suballoc.c:789 ocfs2_reserve_new_metadata_blocks+0x506/0xbe0 fs/ocfs2/suballoc.c:985 ocfs2_init_xattr_set_ctxt fs/ocfs2/xattr.c:3307 [inline] ocfs2_xattr_set+0x184f/0x2b60 fs/ocfs2/xattr.c:3664 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234 __vfs_setxattr_locked+0x17d/0x250 fs/xattr.c:295 vfs_setxattr+0x140/0x330 fs/xattr.c:321 do_setxattr+0x145/0x180 fs/xattr.c:636 filename_setxattr+0x16e/0x1d0 fs/xattr.c:665 path_setxattrat+0x1ff/0x3a0 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __x64_sys_lsetxattr+0xc9/0x140 fs/xattr.c:750 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --> &journal->j_trans_barrier --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(&journal->j_trans_barrier); lock(&oi->ip_xattr_sem); lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]); *** DEADLOCK *** 3 locks held by syz.0.229/6626: #0: ffff888050e42420 (sb_writers#18){.+.+}-{0:0}, at: filename_setxattr+0xbf/0x1d0 fs/xattr.c:663 #1: ffff8880528189c0 (&sb->s_type->i_mutex_key#29){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #1: ffff8880528189c0 (&sb->s_type->i_mutex_key#29){+.+.}-{4:4}, at: vfs_setxattr+0x114/0x330 fs/xattr.c:320 #2: ffff8880528186f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2b60 fs/ocfs2/xattr.c:3613 stack backtrace: CPU: 1 UID: 0 PID: 6626 Comm: syz.0.229 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043 check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x17c/0x330 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_reserve_suballoc_bits+0x11c/0x49f0 fs/ocfs2/suballoc.c:789 ocfs2_reserve_new_metadata_blocks+0x506/0xbe0 fs/ocfs2/suballoc.c:985 ocfs2_init_xattr_set_ctxt fs/ocfs2/xattr.c:3307 [inline] ocfs2_xattr_set+0x184f/0x2b60 fs/ocfs2/xattr.c:3664 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234 __vfs_setxattr_locked+0x17d/0x250 fs/xattr.c:295 vfs_setxattr+0x140/0x330 fs/xattr.c:321 do_setxattr+0x145/0x180 fs/xattr.c:636 filename_setxattr+0x16e/0x1d0 fs/xattr.c:665 path_setxattrat+0x1ff/0x3a0 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __x64_sys_lsetxattr+0xc9/0x140 fs/xattr.c:750 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbc7eb9aeb9 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:00007fbc7fb02028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007fbc7ee15fa0 RCX: 00007fbc7eb9aeb9 RDX: 00002000000001c0 RSI: 0000200000000180 RDI: 00002000000001c0 RBP: 00007fbc7ec08c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000361 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbc7ee16038 R14: 00007fbc7ee15fa0 R15: 00007fff74082388