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.0.212/5050 is trying to acquire lock: ffff88805f331488 (&osb->system_file_mutex){+.+.}-{3:3}, at: ocfs2_get_system_file_inode+0x1b6/0x7f0 fs/ocfs2/sysfile.c:101 but task is already holding lock: ffff88805fdc3120 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_write_begin+0x198/0x310 fs/ocfs2/aops.c:1903 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x237/0x8d0 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+0x3ca/0x2060 fs/ocfs2/dir.c:1091 ocfs2_find_files_on_disk+0xdb/0x2f0 fs/ocfs2/dir.c:1995 ocfs2_lookup_ino_from_name+0x4f/0xf0 fs/ocfs2/dir.c:2017 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline] ocfs2_get_system_file_inode+0x32b/0x7f0 fs/ocfs2/sysfile.c:112 ocfs2_init_global_system_inodes+0x2f3/0x6d0 fs/ocfs2/super.c:458 ocfs2_initialize_super fs/ocfs2/super.c:2279 [inline] ocfs2_fill_super+0x4060/0x50f0 fs/ocfs2/super.c:995 mount_bdev+0x287/0x3c0 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+0x24a/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 -> #0 (&osb->system_file_mutex){+.+.}-{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+0x2c42/0x7d10 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1e3/0x2400 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 ocfs2_get_system_file_inode+0x1b6/0x7f0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0xfb/0x25f0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b6/0xc10 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x2d5/0x5f0 fs/ocfs2/suballoc.c:2679 ocfs2_write_begin_nolock+0x1d17/0x4400 fs/ocfs2/aops.c:1741 ocfs2_write_begin+0x1b9/0x310 fs/ocfs2/aops.c:1905 generic_perform_write+0x2b6/0x550 mm/filemap.c:3785 __generic_file_write_iter+0x25f/0x4e0 mm/filemap.c:3912 ocfs2_file_write_iter+0x1670/0x1e70 fs/ocfs2/file.c:2472 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x745/0xd60 fs/read_write.c:594 ksys_pwrite64 fs/read_write.c:701 [inline] __do_sys_pwrite64 fs/read_write.c:711 [inline] __se_sys_pwrite64 fs/read_write.c:708 [inline] __x64_sys_pwrite64+0x19a/0x220 fs/read_write.c:708 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: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&osb->system_file_mutex); lock(&ocfs2_file_ip_alloc_sem_key); lock(&osb->system_file_mutex); *** DEADLOCK *** 3 locks held by syz.0.212/5050: #0: ffff8880741e4460 (sb_writers#28){.+.+}-{0:0}, at: vfs_write+0x295/0xd60 fs/read_write.c:590 #1: ffff88805fdc3488 (&sb->s_type->i_mutex_key#33){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff88805fdc3488 (&sb->s_type->i_mutex_key#33){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x436/0x1e70 fs/ocfs2/file.c:2402 #2: ffff88805fdc3120 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_write_begin+0x198/0x310 fs/ocfs2/aops.c:1903 stack backtrace: CPU: 0 PID: 5050 Comm: syz.0.212 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 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+0x2c42/0x7d10 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1e3/0x2400 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 ocfs2_get_system_file_inode+0x1b6/0x7f0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0xfb/0x25f0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b6/0xc10 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x2d5/0x5f0 fs/ocfs2/suballoc.c:2679 ocfs2_write_begin_nolock+0x1d17/0x4400 fs/ocfs2/aops.c:1741 ocfs2_write_begin+0x1b9/0x310 fs/ocfs2/aops.c:1905 generic_perform_write+0x2b6/0x550 mm/filemap.c:3785 __generic_file_write_iter+0x25f/0x4e0 mm/filemap.c:3912 ocfs2_file_write_iter+0x1670/0x1e70 fs/ocfs2/file.c:2472 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x745/0xd60 fs/read_write.c:594 ksys_pwrite64 fs/read_write.c:701 [inline] __do_sys_pwrite64 fs/read_write.c:711 [inline] __se_sys_pwrite64 fs/read_write.c:708 [inline] __x64_sys_pwrite64+0x19a/0x220 fs/read_write.c:708 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: 0033:0x7f4ec7b3cf79 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:00007f4ec5d97028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f4ec7db6fa0 RCX: 00007f4ec7b3cf79 RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000004 RBP: 00007f4ec7bd37e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008080c61 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4ec7db7038 R14: 00007f4ec7db6fa0 R15: 00007ffd542ea228 OCFS2: ERROR (device loop0): int ocfs2_validate_gd_parent(struct super_block *, struct ocfs2_dinode *, struct buffer_head *, int): Group descriptor #32 has bit count of 1024 On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. (syz.0.212,5050,0):ocfs2_search_chain:1761 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_search_chain:1871 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_claim_suballoc_bits:1950 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_claim_suballoc_bits:1993 ERROR: status = -30 (syz.0.212,5050,0):__ocfs2_claim_clusters:2365 ERROR: status = -30 (syz.0.212,5050,0):__ocfs2_claim_clusters:2373 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_local_alloc_new_window:1203 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_local_alloc_new_window:1228 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_local_alloc_slide_window:1302 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_local_alloc_slide_window:1321 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_reserve_local_alloc_bits:671 ERROR: status = -30 (syz.0.212,5050,0):ocfs2_reserve_local_alloc_bits:709 ERROR: status = -30 (syz.0.212,5050,1):ocfs2_reserve_clusters_with_limit:1166 ERROR: status = -30 (syz.0.212,5050,1):ocfs2_reserve_clusters_with_limit:1215 ERROR: status = -30 (syz.0.212,5050,1):ocfs2_lock_allocators:2682 ERROR: status = -30 (syz.0.212,5050,1):ocfs2_write_begin_nolock:1745 ERROR: status = -30 (syz.0.212,5050,1):ocfs2_write_begin:1908 ERROR: status = -30