ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 5.15.186-syzkaller #0 Not tainted ------------------------------------------------------ syz.2.439/6832 is trying to acquire lock: ffff888060a62648 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] ffff888060a62648 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_xattr_set+0xad6/0x11e0 fs/ocfs2/xattr.c:3626 but task is already holding lock: ffff88806322a378 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x40c/0x11e0 fs/ocfs2/xattr.c:3587 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&oi->ip_xattr_sem){++++}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_init_acl+0x2fb/0x720 fs/ocfs2/acl.c:365 ocfs2_mknod+0x142f/0x22b0 fs/ocfs2/namei.c:410 ocfs2_create+0x192/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x11e1/0x2f30 fs/namei.c:3739 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769 do_sys_openat2+0x142/0x4a0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1280 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 -> #1 (jbd2_handle){++++}-{0:0}: jbd2_journal_lock_updates+0xa1/0x380 fs/jbd2/transaction.c:881 __ocfs2_flush_truncate_log+0x2a7/0x1060 fs/ocfs2/alloc.c:6028 ocfs2_flush_truncate_log+0x4b/0x60 fs/ocfs2/alloc.c:6075 ocfs2_sync_fs+0x113/0x310 fs/ocfs2/super.c:403 sync_filesystem+0x1be/0x220 fs/sync.c:66 ocfs2_remount+0x109/0xaf0 fs/ocfs2/super.c:612 reconfigure_super+0x219/0x880 fs/super.c:938 do_remount fs/namespace.c:2670 [inline] path_mount+0xd3e/0x1020 fs/namespace.c:3336 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542 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 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 down_write+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_xattr_set+0xad6/0x11e0 fs/ocfs2/xattr.c:3626 ocfs2_set_acl+0x4e1/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x16f/0x270 fs/ocfs2/acl.c:285 set_posix_acl fs/posix_acl.c:947 [inline] posix_acl_xattr_set+0x36f/0x3e0 fs/posix_acl.c:966 __vfs_setxattr+0x3e0/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x129/0x5e0 fs/xattr.c:216 vfs_setxattr+0x168/0x2f0 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x2da/0x300 fs/xattr.c:611 __do_sys_fsetxattr fs/xattr.c:667 [inline] __se_sys_fsetxattr+0x15e/0x1d0 fs/xattr.c:656 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: Chain exists of: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6 --> 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[args->fi_sysfile_type]#6); *** DEADLOCK *** 3 locks held by syz.2.439/6832: #0: ffff88814bebc460 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write_file+0x5c/0x200 fs/namespace.c:421 #1: ffff88806322a648 (&type->i_mutex_dir_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff88806322a648 (&type->i_mutex_dir_key#10){+.+.}-{3:3}, at: vfs_setxattr+0x141/0x2f0 fs/xattr.c:302 #2: ffff88806322a378 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x40c/0x11e0 fs/ocfs2/xattr.c:3587 stack backtrace: CPU: 1 PID: 6832 Comm: syz.2.439 Not tainted 5.15.186-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 check_noncircular+0x274/0x310 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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 down_write+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_xattr_set+0xad6/0x11e0 fs/ocfs2/xattr.c:3626 ocfs2_set_acl+0x4e1/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x16f/0x270 fs/ocfs2/acl.c:285 set_posix_acl fs/posix_acl.c:947 [inline] posix_acl_xattr_set+0x36f/0x3e0 fs/posix_acl.c:966 __vfs_setxattr+0x3e0/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x129/0x5e0 fs/xattr.c:216 vfs_setxattr+0x168/0x2f0 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x2da/0x300 fs/xattr.c:611 __do_sys_fsetxattr fs/xattr.c:667 [inline] __se_sys_fsetxattr+0x15e/0x1d0 fs/xattr.c:656 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: 0033:0x7f231d80a929 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:00007f231b672038 EFLAGS: 00000246 ORIG_RAX: 00000000000000be RAX: ffffffffffffffda RBX: 00007f231da31fa0 RCX: 00007f231d80a929 RDX: 0000200000000080 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007f231d88cb39 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f231da31fa0 R15: 00007ffd130754f8