loop5: detected capacity change from 0 to 32768 ocfs2: Mounting device (7,5) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.5.257/6857 is trying to acquire lock: ffff88805549df40 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] ffff88805549df40 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 but task is already holding lock: ffff888059f84da0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: __ocfs2_change_file_space+0x760/0xe80 fs/ocfs2/file.c:2015 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xb6/0x320 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x595/0x11f0 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x701/0x7b0 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1aa/0x2a0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_set_acl+0x887/0xb00 fs/posix_acl.c:1133 do_setxattr fs/xattr.c:633 [inline] filename_setxattr+0x2e0/0x600 fs/xattr.c:665 path_setxattrat+0x364/0x3a0 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #5 (&oi->ip_xattr_sem){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x2f9/0x720 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1321/0x2050 fs/ocfs2/namei.c:413 ocfs2_create+0x1a5/0x440 fs/ocfs2/namei.c:676 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4043 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_openat fs/open.c:1466 [inline] __se_sys_openat fs/open.c:1461 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1461 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #4 (jbd2_handle){++++}-{0:0}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 start_this_handle+0x1fa7/0x21c0 fs/jbd2/transaction.c:444 jbd2__journal_start+0x2c1/0x5b0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x2a/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x376/0x6d0 fs/ocfs2/journal.c:374 ocfs2_mknod+0xe93/0x2050 fs/ocfs2/namei.c:364 ocfs2_create+0x1a5/0x440 fs/ocfs2/namei.c:676 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4043 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_open fs/open.c:1458 [inline] __se_sys_open fs/open.c:1454 [inline] __x64_sys_open+0x11e/0x150 fs/open.c:1454 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&journal->j_trans_barrier){.+.+}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x36a/0x6d0 fs/ocfs2/journal.c:372 ocfs2_mknod+0xe93/0x2050 fs/ocfs2/namei.c:364 ocfs2_create+0x1a5/0x440 fs/ocfs2/namei.c:676 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4043 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_open fs/open.c:1458 [inline] __se_sys_open fs/open.c:1454 [inline] __x64_sys_open+0x11e/0x150 fs/open.c:1454 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (sb_internal#2){.+.+}-{0:0}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 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.h:1798 [inline] sb_start_intwrite include/linux/fs.h:1981 [inline] ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370 ocfs2_mknod+0xe93/0x2050 fs/ocfs2/namei.c:364 ocfs2_create+0x1a5/0x440 fs/ocfs2/namei.c:676 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4043 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_open fs/open.c:1458 [inline] __se_sys_open fs/open.c:1454 [inline] __x64_sys_open+0x11e/0x150 fs/open.c:1454 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 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}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:869 [inline] ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1134 [inline] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0 fs/ocfs2/suballoc.c:1179 ocfs2_mknod+0xe32/0x2050 fs/ocfs2/namei.c:357 ocfs2_create+0x1a5/0x440 fs/ocfs2/namei.c:676 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4043 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_open fs/open.c:1458 [inline] __se_sys_open fs/open.c:1454 [inline] __x64_sys_open+0x11e/0x150 fs/open.c:1454 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 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+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:869 [inline] ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 ocfs2_reserve_new_metadata_blocks+0x403/0x940 fs/ocfs2/suballoc.c:984 ocfs2_reserve_new_metadata fs/ocfs2/suballoc.c:1027 [inline] ocfs2_lock_allocators+0x29e/0x5c0 fs/ocfs2/suballoc.c:2761 ocfs2_extend_allocation+0x39b/0x17a0 fs/ocfs2/file.c:589 ocfs2_allocate_unwritten_extents+0x2e9/0x7b0 fs/ocfs2/file.c:1496 __ocfs2_change_file_space+0x901/0xe80 fs/ocfs2/file.c:2023 ocfs2_fallocate+0x1f5/0x240 fs/ocfs2/file.c:2138 vfs_fallocate+0x669/0x7e0 fs/open.c:342 ksys_fallocate fs/open.c:366 [inline] __do_sys_fallocate fs/open.c:371 [inline] __se_sys_fallocate fs/open.c:369 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:369 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 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] --> &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[EXTENT_ALLOC_SYSTEM_INODE]); *** DEADLOCK *** 3 locks held by syz.5.257/6857: #0: ffff88807cd58428 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3107 [inline] #0: ffff88807cd58428 (sb_writers#12){.+.+}-{0:0}, at: vfs_fallocate+0x5f0/0x7e0 fs/open.c:341 #1: ffff888059f85100 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff888059f85100 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: __ocfs2_change_file_space+0x1d8/0xe80 fs/ocfs2/file.c:1949 #2: ffff888059f84da0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: __ocfs2_change_file_space+0x760/0xe80 fs/ocfs2/file.c:2015 stack backtrace: CPU: 1 UID: 0 PID: 6857 Comm: syz.5.257 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043 check_noncircular+0x134/0x160 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+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:869 [inline] ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 ocfs2_reserve_new_metadata_blocks+0x403/0x940 fs/ocfs2/suballoc.c:984 ocfs2_reserve_new_metadata fs/ocfs2/suballoc.c:1027 [inline] ocfs2_lock_allocators+0x29e/0x5c0 fs/ocfs2/suballoc.c:2761 ocfs2_extend_allocation+0x39b/0x17a0 fs/ocfs2/file.c:589 ocfs2_allocate_unwritten_extents+0x2e9/0x7b0 fs/ocfs2/file.c:1496 __ocfs2_change_file_space+0x901/0xe80 fs/ocfs2/file.c:2023 ocfs2_fallocate+0x1f5/0x240 fs/ocfs2/file.c:2138 vfs_fallocate+0x669/0x7e0 fs/open.c:342 ksys_fallocate fs/open.c:366 [inline] __do_sys_fallocate fs/open.c:371 [inline] __se_sys_fallocate fs/open.c:369 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:369 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f976b38ebe9 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:00007f976c24a038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f976b5c5fa0 RCX: 00007f976b38ebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f976b411e19 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000008ffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f976b5c6038 R14: 00007f976b5c5fa0 R15: 00007ffc18ce6cd8 ocfs2: Unmounting device (7,5) on (node local)