loop2: detected capacity change from 0 to 32768 ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.2.1161/10592 is trying to acquire lock: ffff8880529a6d80 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline] ffff8880529a6d80 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_xattr_set+0xd35/0x2a80 fs/ocfs2/xattr.c:3622 but task is already holding lock: ffff888059785c78 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2a80 fs/ocfs2/xattr.c:3583 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x9b/0x480 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x2fc/0x7d0 fs/ocfs2/acl.c:366 ocfs2_mknod+0xd5c/0x2540 fs/ocfs2/namei.c:413 ocfs2_create+0x17c/0x460 fs/ocfs2/namei.c:676 lookup_open.isra.0+0x11d3/0x1580 fs/namei.c:3708 open_last_lookups fs/namei.c:3807 [inline] path_openat+0x893/0x2cb0 fs/namei.c:4043 do_filp_open+0x20b/0x470 fs/namei.c:4073 do_sys_openat2+0x11b/0x1d0 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+0x174/0x210 fs/open.c:1461 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (jbd2_handle){++++}-{0:0}: jbd2_journal_lock_updates+0xa4/0x380 fs/jbd2/transaction.c:861 __ocfs2_flush_truncate_log+0x281/0x1160 fs/ocfs2/alloc.c:6037 ocfs2_flush_truncate_log+0x4a/0x70 fs/ocfs2/alloc.c:6084 ocfs2_sync_fs+0x1c6/0x3d0 fs/ocfs2/super.c:406 sync_filesystem+0x1d0/0x290 fs/sync.c:66 generic_shutdown_super+0x74/0x390 fs/super.c:622 kill_block_super+0x3b/0x90 fs/super.c:1766 deactivate_locked_super+0xc1/0x1a0 fs/super.c:474 deactivate_super fs/super.c:507 [inline] deactivate_super+0xde/0x100 fs/super.c:503 cleanup_mnt+0x225/0x450 fs/namespace.c:1375 task_work_run+0x150/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xeb/0x110 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x41c/0x4e0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_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+0x12a6/0x1ce0 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 down_write+0x92/0x200 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:870 [inline] ocfs2_xattr_set+0xd35/0x2a80 fs/ocfs2/xattr.c:3622 ocfs2_set_acl+0x46d/0x550 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x224/0x2d0 fs/ocfs2/acl.c:286 set_posix_acl+0x25f/0x320 fs/posix_acl.c:954 vfs_set_acl+0x5a7/0x930 fs/posix_acl.c:1133 do_set_acl+0xd9/0x1a0 fs/posix_acl.c:1278 do_setxattr+0xeb/0x180 fs/xattr.c:633 filename_setxattr+0x16b/0x1d0 fs/xattr.c:665 path_setxattrat+0x1de/0x2a0 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xc6/0x140 fs/xattr.c:743 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 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[TRUNCATE_LOG_SYSTEM_INODE] --> jbd2_handle --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(jbd2_handle); lock(&oi->ip_xattr_sem); lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]); *** DEADLOCK *** 3 locks held by syz.2.1161/10592: #0: ffff888029f62428 (sb_writers#18){.+.+}-{0:0}, at: filename_setxattr+0xbb/0x1d0 fs/xattr.c:663 #1: ffff888059785f40 (&type->i_mutex_dir_key#13){++++}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline] #1: ffff888059785f40 (&type->i_mutex_dir_key#13){++++}-{4:4}, at: vfs_set_acl+0x33e/0x930 fs/posix_acl.c:1114 #2: ffff888059785c78 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2a80 fs/ocfs2/xattr.c:3583 stack backtrace: CPU: 0 UID: 0 PID: 10592 Comm: syz.2.1161 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2043 check_noncircular+0x14c/0x170 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+0x12a6/0x1ce0 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 down_write+0x92/0x200 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:870 [inline] ocfs2_xattr_set+0xd35/0x2a80 fs/ocfs2/xattr.c:3622 ocfs2_set_acl+0x46d/0x550 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x224/0x2d0 fs/ocfs2/acl.c:286 set_posix_acl+0x25f/0x320 fs/posix_acl.c:954 vfs_set_acl+0x5a7/0x930 fs/posix_acl.c:1133 do_set_acl+0xd9/0x1a0 fs/posix_acl.c:1278 do_setxattr+0xeb/0x180 fs/xattr.c:633 filename_setxattr+0x16b/0x1d0 fs/xattr.c:665 path_setxattrat+0x1de/0x2a0 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xc6/0x140 fs/xattr.c:743 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc6eb58eec9 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:00007fc6ec3fc038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007fc6eb7e5fa0 RCX: 00007fc6eb58eec9 RDX: 0000200000000f00 RSI: 00002000000001c0 RDI: 0000200000000c00 RBP: 00007fc6eb611f91 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000005c R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc6eb7e6038 R14: 00007fc6eb7e5fa0 R15: 00007ffc4daca2e8