ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.4.2680/15490 is trying to acquire lock: ffff88805536dda0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] ffff88805536dda0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0xea/0xbf0 fs/ocfs2/localalloc.c:636 but task is already holding lock: ffff888055354c58 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_extend_file fs/ocfs2/file.c:1073 [inline] ffff888055354c58 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x1ace/0x2690 fs/ocfs2/file.c:1221 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}: down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1625 ocfs2_try_remove_refcount_tree+0xa7/0x2f0 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x1057/0x2bc0 fs/ocfs2/xattr.c:3700 ocfs2_set_acl+0x469/0x550 fs/ocfs2/acl.c:255 ocfs2_iop_set_acl+0x224/0x2d0 fs/ocfs2/acl.c:287 set_posix_acl+0x263/0x320 fs/posix_acl.c:955 vfs_remove_acl+0x1aa/0x700 fs/posix_acl.c:1242 removexattr fs/xattr.c:1027 [inline] file_removexattr fs/xattr.c:1037 [inline] path_removexattrat+0x55f/0x5f0 fs/xattr.c:1086 __do_sys_fremovexattr fs/xattr.c:1112 [inline] __se_sys_fremovexattr fs/xattr.c:1110 [inline] __x64_sys_fremovexattr+0x5a/0x80 fs/xattr.c:1110 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x99/0x450 kernel/locking/rwsem.c:1568 ocfs2_init_acl+0x35b/0x840 fs/ocfs2/acl.c:367 ocfs2_mknod+0x175a/0x27b0 fs/ocfs2/namei.c:414 ocfs2_create+0xf4/0x450 fs/ocfs2/namei.c:677 lookup_open.isra.0+0xc47/0x11b0 fs/namei.c:4511 open_last_lookups fs/namei.c:4611 [inline] path_openat+0x2291/0x31a0 fs/namei.c:4855 do_file_open+0x20e/0x430 fs/namei.c:4887 do_sys_openat2+0x10d/0x1e0 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x99/0x450 kernel/locking/rwsem.c:1568 ocfs2_start_trans+0x5c8/0x920 fs/ocfs2/journal.c:369 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:2484 dquot_load_quota_inode fs/quota/dquot.c:2521 [inline] dquot_load_quota_inode+0x2a3/0x470 fs/quota/dquot.c:2513 ocfs2_enable_quotas+0x28a/0x5a0 fs/ocfs2/super.c:930 ocfs2_fill_super.cold+0x1cd/0x3a5 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1694 vfs_get_tree+0x92/0x320 fs/super.c:1754 fc_mount fs/namespace.c:1193 [inline] do_new_mount_fc fs/namespace.c:3758 [inline] do_new_mount fs/namespace.c:3834 [inline] path_mount+0x7d0/0x23d0 fs/namespace.c:4154 do_mount fs/namespace.c:4167 [inline] __do_sys_mount fs/namespace.c:4383 [inline] __se_sys_mount fs/namespace.c:4360 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4360 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (sb_internal#6){.+.+}-{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:367 ocfs2_mknod+0x162b/0x27b0 fs/ocfs2/namei.c:365 ocfs2_create+0xf4/0x450 fs/ocfs2/namei.c:677 lookup_open.isra.0+0xc47/0x11b0 fs/namei.c:4511 open_last_lookups fs/namei.c:4611 [inline] path_openat+0x2291/0x31a0 fs/namei.c:4855 do_file_open+0x20e/0x430 fs/namei.c:4887 do_sys_openat2+0x10d/0x1e0 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[LOCAL_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+0x1b1/0x370 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_reserve_local_alloc_bits+0xea/0xbf0 fs/ocfs2/localalloc.c:636 ocfs2_reserve_clusters_with_limit+0x55a/0xe80 fs/ocfs2/suballoc.c:1262 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1323 [inline] ocfs2_lock_allocators+0x1ca/0x5c0 fs/ocfs2/suballoc.c:3098 ocfs2_extend_allocation+0x283/0x19a0 fs/ocfs2/file.c:590 ocfs2_extend_no_holes+0x238/0x4b0 fs/ocfs2/file.c:1028 ocfs2_extend_file fs/ocfs2/file.c:1096 [inline] ocfs2_setattr+0x1bd3/0x2690 fs/ocfs2/file.c:1221 notify_change+0xb25/0x1330 fs/attr.c:556 do_truncate+0x1df/0x240 fs/open.c:68 vfs_truncate+0x538/0x720 fs/open.c:118 ksys_truncate+0xee/0x190 fs/open.c:142 __do_sys_truncate fs/open.c:154 [inline] __se_sys_truncate fs/open.c:152 [inline] __x64_sys_truncate+0x54/0x80 fs/open.c:152 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/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[LOCAL_ALLOC_SYSTEM_INODE] --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&oi->ip_xattr_sem); lock(&ocfs2_file_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]); *** DEADLOCK *** 3 locks held by syz.4.2680/15490: #0: ffff88803713a410 (sb_writers#23){.+.+}-{0:0}, at: vfs_truncate+0x336/0x720 fs/open.c:96 #1: ffff888055354fa0 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:1034 [inline] #1: ffff888055354fa0 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: do_truncate+0x14e/0x240 fs/open.c:63 #2: ffff888055354c58 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_extend_file fs/ocfs2/file.c:1073 [inline] #2: ffff888055354c58 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x1ace/0x2690 fs/ocfs2/file.c:1221 stack backtrace: CPU: 1 UID: 0 PID: 15490 Comm: syz.4.2680 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 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+0x1b1/0x370 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_reserve_local_alloc_bits+0xea/0xbf0 fs/ocfs2/localalloc.c:636 ocfs2_reserve_clusters_with_limit+0x55a/0xe80 fs/ocfs2/suballoc.c:1262 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1323 [inline] ocfs2_lock_allocators+0x1ca/0x5c0 fs/ocfs2/suballoc.c:3098 ocfs2_extend_allocation+0x283/0x19a0 fs/ocfs2/file.c:590 ocfs2_extend_no_holes+0x238/0x4b0 fs/ocfs2/file.c:1028 ocfs2_extend_file fs/ocfs2/file.c:1096 [inline] ocfs2_setattr+0x1bd3/0x2690 fs/ocfs2/file.c:1221 notify_change+0xb25/0x1330 fs/attr.c:556 do_truncate+0x1df/0x240 fs/open.c:68 vfs_truncate+0x538/0x720 fs/open.c:118 ksys_truncate+0xee/0x190 fs/open.c:142 __do_sys_truncate fs/open.c:154 [inline] __se_sys_truncate fs/open.c:152 [inline] __x64_sys_truncate+0x54/0x80 fs/open.c:152 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f75f239ce59 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:00007f75f32e7028 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007f75f2615fa0 RCX: 00007f75f239ce59 RDX: 0000000000000000 RSI: 0000000000008da6 RDI: 0000200000000940 RBP: 00007f75f2432d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f75f2616038 R14: 00007f75f2615fa0 R15: 00007ffc6c0d32f8 OCFS2: ERROR (device loop4): ocfs2_validate_gd_self: Group descriptor #32 has an invalid fs_generation of #1 On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. (syz.4.2680,15490,1):ocfs2_search_chain:1913 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_search_chain:2036 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_claim_suballoc_bits:2123 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_claim_suballoc_bits:2176 ERROR: status = -30 (syz.4.2680,15490,1):__ocfs2_claim_clusters:2557 ERROR: status = -30 (syz.4.2680,15490,1):__ocfs2_claim_clusters:2565 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_local_alloc_new_window:1197 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_local_alloc_new_window:1222 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_local_alloc_slide_window:1296 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_local_alloc_slide_window:1315 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_reserve_local_alloc_bits:672 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_reserve_local_alloc_bits:710 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_reserve_clusters_with_limit:1266 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_reserve_clusters_with_limit:1315 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_lock_allocators:3101 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_extend_allocation:593 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_extend_no_holes:1031 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_extend_file:1102 ERROR: status = -30 (syz.4.2680,15490,1):ocfs2_setattr:1224 ERROR: status = -30