REISERFS (device loop9): Using r5 hash to sort names REISERFS warning (device loop9): vs-13060 reiserfs_update_sd_size: stat data of object [1 2 0x0 SD] (nlink == 1) not found (pos 2) REISERFS (device loop9): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 5.15.189-syzkaller #0 Not tainted ------------------------------------------------------ syz.9.626/8544 is trying to acquire lock: ffff88807a793090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x75/0xd0 fs/reiserfs/lock.c:27 but task is already holding lock: ffff888073fb0980 (&type->i_mutex_dir_key#21/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] ffff888073fb0980 (&type->i_mutex_dir_key#21/3){+.+.}-{3:3}, at: open_xa_root fs/reiserfs/xattr.c:127 [inline] ffff888073fb0980 (&type->i_mutex_dir_key#21/3){+.+.}-{3:3}, at: open_xa_dir+0x11d/0x6b0 fs/reiserfs/xattr.c:152 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&type->i_mutex_dir_key#21/3){+.+.}-{3:3}: down_write_nested+0x3b/0x60 kernel/locking/rwsem.c:1667 inode_lock_nested include/linux/fs.h:822 [inline] open_xa_root fs/reiserfs/xattr.c:127 [inline] open_xa_dir+0x11d/0x6b0 fs/reiserfs/xattr.c:152 reiserfs_for_each_xattr+0x174/0x7b0 fs/reiserfs/xattr.c:252 reiserfs_delete_xattrs+0x1c/0x80 fs/reiserfs/xattr.c:364 reiserfs_evict_inode+0x221/0x490 fs/reiserfs/inode.c:53 evict+0x485/0x870 fs/inode.c:647 reiserfs_new_inode+0x5c8/0x1860 fs/reiserfs/inode.c:2164 reiserfs_symlink+0x4cf/0x770 fs/reiserfs/namei.c:1168 vfs_symlink+0x247/0x3d0 fs/namei.c:4429 do_symlinkat+0x1be/0x6c0 fs/namei.c:4458 __do_sys_symlink fs/namei.c:4480 [inline] __se_sys_symlink fs/namei.c:4478 [inline] __x64_sys_symlink+0x7a/0x90 fs/namei.c:4478 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 (&sbi->lock){+.+.}-{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 __mutex_lock_common+0x1eb/0x2390 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 reiserfs_write_lock+0x75/0xd0 fs/reiserfs/lock.c:27 reiserfs_mkdir+0x30c/0x970 fs/reiserfs/namei.c:831 xattr_mkdir fs/reiserfs/xattr.c:76 [inline] open_xa_root fs/reiserfs/xattr.c:136 [inline] open_xa_dir+0x318/0x6b0 fs/reiserfs/xattr.c:152 xattr_lookup+0x22/0x2a0 fs/reiserfs/xattr.c:395 reiserfs_xattr_set_handle+0xf4/0xf20 fs/reiserfs/xattr.c:540 __reiserfs_set_acl+0x4ec/0x680 fs/reiserfs/xattr_acl.c:276 reiserfs_set_acl+0x447/0x5f0 fs/reiserfs/xattr_acl.c:50 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: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&type->i_mutex_dir_key#21/3); lock(&sbi->lock); lock(&type->i_mutex_dir_key#21/3); lock(&sbi->lock); *** DEADLOCK *** 3 locks held by syz.9.626/8544: #0: ffff888068a08460 (sb_writers#32){.+.+}-{0:0}, at: mnt_want_write_file+0x5c/0x200 fs/namespace.c:421 #1: ffff888073fb1020 (&type->i_mutex_dir_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff888073fb1020 (&type->i_mutex_dir_key#21){+.+.}-{3:3}, at: vfs_setxattr+0x141/0x2f0 fs/xattr.c:302 #2: ffff888073fb0980 (&type->i_mutex_dir_key#21/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #2: ffff888073fb0980 (&type->i_mutex_dir_key#21/3){+.+.}-{3:3}, at: open_xa_root fs/reiserfs/xattr.c:127 [inline] #2: ffff888073fb0980 (&type->i_mutex_dir_key#21/3){+.+.}-{3:3}, at: open_xa_dir+0x11d/0x6b0 fs/reiserfs/xattr.c:152 stack backtrace: CPU: 1 PID: 8544 Comm: syz.9.626 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 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 __mutex_lock_common+0x1eb/0x2390 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 reiserfs_write_lock+0x75/0xd0 fs/reiserfs/lock.c:27 reiserfs_mkdir+0x30c/0x970 fs/reiserfs/namei.c:831 xattr_mkdir fs/reiserfs/xattr.c:76 [inline] open_xa_root fs/reiserfs/xattr.c:136 [inline] open_xa_dir+0x318/0x6b0 fs/reiserfs/xattr.c:152 xattr_lookup+0x22/0x2a0 fs/reiserfs/xattr.c:395 reiserfs_xattr_set_handle+0xf4/0xf20 fs/reiserfs/xattr.c:540 __reiserfs_set_acl+0x4ec/0x680 fs/reiserfs/xattr_acl.c:276 reiserfs_set_acl+0x447/0x5f0 fs/reiserfs/xattr_acl.c:50 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: 0033:0x7fd49447abe9 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:00007fd4926e2038 EFLAGS: 00000246 ORIG_RAX: 00000000000000be RAX: ffffffffffffffda RBX: 00007fd4946a1fa0 RCX: 00007fd49447abe9 RDX: 0000200000000140 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007fd4944fde19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd4946a2038 R14: 00007fd4946a1fa0 R15: 00007fffd08df448 REISERFS warning (device loop9): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop9): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop9): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop9): vs-13060 reiserfs_update_sd_size: stat data of object [1 2 0x0 SD] (nlink == 1) not found (pos 2)