REISERFS (device loop1): checking transaction log (loop1) REISERFS (device loop1): Using rupasov hash to sort names REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 6.7.0-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/20540 is trying to acquire lock: ffff88804c9f4520 (&type->i_mutex_dir_key#15/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline] ffff88804c9f4520 (&type->i_mutex_dir_key#15/3){+.+.}-{3:3}, at: open_xa_root fs/reiserfs/xattr.c:128 [inline] ffff88804c9f4520 (&type->i_mutex_dir_key#15/3){+.+.}-{3:3}, at: open_xa_dir+0x136/0x610 fs/reiserfs/xattr.c:153 but task is already holding lock: ffff8880893c6090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x5f/0xd0 fs/reiserfs/lock.c:78 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&sbi->lock){+.+.}-{3:3}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747 reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27 reiserfs_mkdir+0x321/0x8f0 fs/reiserfs/namei.c:829 xattr_mkdir fs/reiserfs/xattr.c:77 [inline] open_xa_root fs/reiserfs/xattr.c:137 [inline] open_xa_dir+0x2cd/0x610 fs/reiserfs/xattr.c:153 xattr_lookup+0x24/0x280 fs/reiserfs/xattr.c:396 reiserfs_xattr_set_handle+0xfc/0xe20 fs/reiserfs/xattr.c:535 reiserfs_security_write+0x157/0x1d0 fs/reiserfs/xattr_security.c:107 reiserfs_new_inode+0x15ab/0x1cb0 fs/reiserfs/inode.c:2105 reiserfs_create+0x3e7/0x6e0 fs/reiserfs/namei.c:666 lookup_open fs/namei.c:3477 [inline] open_last_lookups fs/namei.c:3546 [inline] path_openat+0x13fa/0x3290 fs/namei.c:3776 do_filp_open+0x234/0x490 fs/namei.c:3809 do_sys_openat2+0x13e/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1463 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #0 (&type->i_mutex_dir_key#15/3){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x1909/0x5ab0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 down_write_nested+0x3d/0x50 kernel/locking/rwsem.c:1695 inode_lock_nested include/linux/fs.h:837 [inline] open_xa_root fs/reiserfs/xattr.c:128 [inline] open_xa_dir+0x136/0x610 fs/reiserfs/xattr.c:153 xattr_lookup+0x24/0x280 fs/reiserfs/xattr.c:396 reiserfs_xattr_get+0xfd/0x570 fs/reiserfs/xattr.c:679 __vfs_getxattr+0x436/0x470 fs/xattr.c:424 smk_fetch+0xb1/0x140 security/smack/smack_lsm.c:304 smack_d_instantiate+0x744/0xa50 security/smack/smack_lsm.c:3573 security_d_instantiate+0x9b/0xf0 security/security.c:3799 d_instantiate_new+0x65/0x120 fs/dcache.c:2052 reiserfs_create+0x5cf/0x6e0 fs/reiserfs/namei.c:692 lookup_open fs/namei.c:3477 [inline] open_last_lookups fs/namei.c:3546 [inline] path_openat+0x13fa/0x3290 fs/namei.c:3776 do_filp_open+0x234/0x490 fs/namei.c:3809 do_sys_openat2+0x13e/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1463 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->lock); lock(&type->i_mutex_dir_key#15/3); lock(&sbi->lock); lock(&type->i_mutex_dir_key#15/3); *** DEADLOCK *** 3 locks held by syz-executor.1/20540: #0: ffff88809210c418 (sb_writers#27){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:404 #1: ffff88804c9f4bc0 (&type->i_mutex_dir_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #1: ffff88804c9f4bc0 (&type->i_mutex_dir_key#15){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline] #1: ffff88804c9f4bc0 (&type->i_mutex_dir_key#15){+.+.}-{3:3}, at: path_openat+0x7bc/0x3290 fs/namei.c:3776 #2: ffff8880893c6090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x5f/0xd0 fs/reiserfs/lock.c:78 stack backtrace: CPU: 0 PID: 20540 Comm: syz-executor.1 Not tainted 6.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x366/0x490 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x1909/0x5ab0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 down_write_nested+0x3d/0x50 kernel/locking/rwsem.c:1695 inode_lock_nested include/linux/fs.h:837 [inline] open_xa_root fs/reiserfs/xattr.c:128 [inline] open_xa_dir+0x136/0x610 fs/reiserfs/xattr.c:153 xattr_lookup+0x24/0x280 fs/reiserfs/xattr.c:396 reiserfs_xattr_get+0xfd/0x570 fs/reiserfs/xattr.c:679 __vfs_getxattr+0x436/0x470 fs/xattr.c:424 smk_fetch+0xb1/0x140 security/smack/smack_lsm.c:304 smack_d_instantiate+0x744/0xa50 security/smack/smack_lsm.c:3573 security_d_instantiate+0x9b/0xf0 security/security.c:3799 d_instantiate_new+0x65/0x120 fs/dcache.c:2052 reiserfs_create+0x5cf/0x6e0 fs/reiserfs/namei.c:692 lookup_open fs/namei.c:3477 [inline] open_last_lookups fs/namei.c:3546 [inline] path_openat+0x13fa/0x3290 fs/namei.c:3776 do_filp_open+0x234/0x490 fs/namei.c:3809 do_sys_openat2+0x13e/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1463 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f249fc7cd29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f24a0ac30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f249fdabf80 RCX: 00007f249fc7cd29 RDX: 000000000000275a RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00007f249fcc947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f249fdabf80 R15: 00007ffd7d2e5898