loop4: detected capacity change from 0 to 32768 ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc3-next-20241219-syzkaller #0 Not tainted ------------------------------------------------------ syz.4.913/9213 is trying to acquire lock: ffff88805a933ff8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_init_acl+0x397/0x930 fs/ocfs2/acl.c:366 but task is already holding lock: ffff888034252950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (jbd2_handle){++++}-{0:0}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 jbd2_journal_lock_updates+0xaa/0x380 fs/jbd2/transaction.c:865 __ocfs2_flush_truncate_log+0x2ea/0x1240 fs/ocfs2/alloc.c:6029 ocfs2_flush_truncate_log+0x4f/0x70 fs/ocfs2/alloc.c:6076 ocfs2_sync_fs+0x125/0x390 fs/ocfs2/super.c:406 sync_filesystem+0x1c8/0x230 fs/sync.c:66 generic_shutdown_super+0x72/0x2d0 fs/super.c:621 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1414 task_work_run+0x24f/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:863 [inline] ocfs2_remove_btree_range+0x737/0x1860 fs/ocfs2/alloc.c:5742 ocfs2_commit_truncate+0xcca/0x2550 fs/ocfs2/alloc.c:7349 ocfs2_truncate_file+0xd21/0x1560 fs/ocfs2/file.c:509 ocfs2_setattr+0x1890/0x1ef0 fs/ocfs2/file.c:1212 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x220/0x310 fs/open.c:65 handle_truncate fs/namei.c:3449 [inline] do_open fs/namei.c:3832 [inline] path_openat+0x2e0e/0x3580 fs/namei.c:3987 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1427 do_sys_open fs/open.c:1442 [inline] __do_sys_open fs/open.c:1450 [inline] __se_sys_open fs/open.c:1446 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1446 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&oi->ip_alloc_sem){++++}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 ocfs2_try_remove_refcount_tree+0xb6/0x330 fs/ocfs2/refcounttree.c:932 ocfs2_truncate_file+0xe1b/0x1560 fs/ocfs2/file.c:521 ocfs2_setattr+0x1890/0x1ef0 fs/ocfs2/file.c:1212 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x220/0x310 fs/open.c:65 handle_truncate fs/namei.c:3449 [inline] do_open fs/namei.c:3832 [inline] path_openat+0x2e0e/0x3580 fs/namei.c:3987 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1427 do_sys_open fs/open.c:1442 [inline] __do_sys_open fs/open.c:1450 [inline] __se_sys_open fs/open.c:1446 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1446 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&oi->ip_xattr_sem){++++}-{4:4}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x397/0x930 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1c05/0x2b30 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x1ab/0x470 fs/ocfs2/namei.c:657 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4311 do_mkdirat+0x264/0x3a0 fs/namei.c:4334 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &oi->ip_xattr_sem --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6 --> jbd2_handle Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(jbd2_handle); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6); lock(jbd2_handle); rlock(&oi->ip_xattr_sem); *** DEADLOCK *** 8 locks held by syz.4.913/9213: #0: ffff888035526420 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:548 #1: ffff88805a9342c0 (&type->i_mutex_dir_key#17/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:898 [inline] #1: ffff88805a9342c0 (&type->i_mutex_dir_key#17/1){+.+.}-{4:4}, at: filename_create+0x260/0x540 fs/namei.c:4080 #2: ffff88805a9689c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline] #2: ffff88805a9689c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x192/0x4e70 fs/ocfs2/suballoc.c:786 #3: ffff88805a9309c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline] #3: ffff88805a9309c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x192/0x4e70 fs/ocfs2/suballoc.c:786 #4: ffff88805a96a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline] #4: ffff88805a96a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x132/0x2840 fs/ocfs2/localalloc.c:636 #5: ffff888035526610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_mknod+0x150c/0x2b30 fs/ocfs2/namei.c:361 #6: ffff88802a3780e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3be/0x700 fs/ocfs2/journal.c:350 #7: ffff888034252950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448 stack backtrace: CPU: 0 UID: 0 PID: 9213 Comm: syz.4.913 Not tainted 6.13.0-rc3-next-20241219-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x397/0x930 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1c05/0x2b30 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x1ab/0x470 fs/ocfs2/namei.c:657 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4311 do_mkdirat+0x264/0x3a0 fs/namei.c:4334 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4122384597 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007f4123265e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f4123265ef0 RCX: 00007f4122384597 RDX: 00000000000001ff RSI: 0000000020002200 RDI: 00000000ffffff9c RBP: 0000000020000f40 R08: 0000000020000000 R09: 0000000000000000 R10: 0000000020000f40 R11: 0000000000000246 R12: 0000000020002200 R13: 00007f4123265eb0 R14: 0000000000000000 R15: 0000000020002100