loop0: detected capacity change from 0 to 32768 JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. ====================================================== WARNING: possible circular locking dependency detected 5.15.167-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor455/3676 is trying to acquire lock: ffff88801c07d488 (&osb->system_file_mutex){+.+.}-{3:3}, at: ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 but task is already holding lock: ffff888070b694a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_extend_file+0x11e/0x5b0 fs/ocfs2/file.c:1075 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}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 down_read+0x45/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x2b3/0xa10 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x437/0x26d0 fs/ocfs2/dir.c:1080 ocfs2_find_files_on_disk+0xea/0x310 fs/ocfs2/dir.c:1982 ocfs2_lookup_ino_from_name+0xad/0x1e0 fs/ocfs2/dir.c:2004 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline] ocfs2_get_system_file_inode+0x314/0x7b0 fs/ocfs2/sysfile.c:112 ocfs2_init_global_system_inodes+0x328/0x720 fs/ocfs2/super.c:458 ocfs2_initialize_super fs/ocfs2/super.c:2276 [inline] ocfs2_fill_super+0x479e/0x58a0 fs/ocfs2/super.c:995 mount_bdev+0x2c9/0x3f0 fs/super.c:1398 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1528 do_new_mount+0x2ba/0xb40 fs/namespace.c:3005 do_mount fs/namespace.c:3348 [inline] __do_sys_mount fs/namespace.c:3556 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3533 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 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+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 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+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0x103/0x27a0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b4/0xb50 fs/ocfs2/suballoc.c:1162 ocfs2_convert_inline_data_to_extents+0x299/0x17f0 fs/ocfs2/alloc.c:7064 ocfs2_extend_file+0x31a/0x5b0 fs/ocfs2/file.c:1087 ocfs2_setattr+0x7ce/0x1c70 fs/ocfs2/file.c:1214 notify_change+0xc6d/0xf50 fs/attr.c:505 do_truncate+0x21c/0x300 fs/open.c:65 do_sys_ftruncate+0x2eb/0x390 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 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-executor455/3676: #0: ffff888020972460 (sb_writers#9){.+.+}-{0:0}, at: do_sys_ftruncate+0x25a/0x390 fs/open.c:190 #1: ffff888070b69808 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline] #1: ffff888070b69808 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x208/0x300 fs/open.c:63 #2: ffff888070b694a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_extend_file+0x11e/0x5b0 fs/ocfs2/file.c:1075 stack backtrace: CPU: 1 PID: 3676 Comm: syz-executor455 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 check_noncircular+0x2f8/0x3b0 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+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 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+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0x103/0x27a0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b4/0xb50 fs/ocfs2/suballoc.c:1162 ocfs2_convert_inline_data_to_extents+0x299/0x17f0 fs/ocfs2/alloc.c:7064 ocfs2_extend_file+0x31a/0x5b0 fs/ocfs2/file.c:1087 ocfs2_setattr+0x7ce/0x1c70 fs/ocfs2/file.c:1214 notify_change+0xc6d/0xf50 fs/attr.c:505 do_truncate+0x21c/0x300 fs/open.c:65 do_sys_ftruncate+0x2eb/0x390 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f42ece9f329 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe9b569848 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007f42ecee80a0 RCX: 00007f42ece9f329 RDX: 00007f42ece9f329 RSI: 0000000002007ffb RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007ffe9b569880 R09: 00007ffe9b569880 R10: 00007ffe9b569880 R11: 0000000000000246 R12: 00007ffe9b56986c R13: 0000000000000025 R14: 431bde82d7b634db R15: 00007ffe9b5698a0 OCFS2: ERROR (device loop0): int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *, handle_t *, u32, u32, struct ocfs2_suballoc_result *): Chain allocator dinode 23 has 4294967295 used bits but only 16777215 total On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. (syz-executor455,3676,0):ocfs2_claim_suballoc_bits:1983 ERROR: status = -30 (syz-executor455,3676,0):__ocfs2_claim_clusters:2355 ERROR: status = -30 (syz-executor455,3676,0):__ocfs2_claim_clusters:2363 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_local_alloc_new_window:1203 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_local_alloc_new_window:1228 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_local_alloc_slide_window:1302 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_local_alloc_slide_window:1321 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_reserve_local_alloc_bits:671 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_reserve_local_alloc_bits:709 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_reserve_clusters_with_limit:1166 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_reserve_clusters_with_limit:1215 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_convert_inline_data_to_extents:7066 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_extend_file:1090 ERROR: status = -30 (syz-executor455,3676,0):ocfs2_setattr:1217 ERROR: status = -30