REISERFS (device loop2): Using tea hash to sort names
REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.
======================================================
WARNING: possible circular locking dependency detected
5.15.107-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.2/7117 is trying to acquire lock:
ffff00011b37be80 (&type->i_mutex_dir_key#13/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline]
ffff00011b37be80 (&type->i_mutex_dir_key#13/3){+.+.}-{3:3}, at: open_xa_root fs/reiserfs/xattr.c:127 [inline]
ffff00011b37be80 (&type->i_mutex_dir_key#13/3){+.+.}-{3:3}, at: open_xa_dir+0x11c/0x578 fs/reiserfs/xattr.c:152
but task is already holding lock:
ffff0000c14d6090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x68/0xd8 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}:
__mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27
reiserfs_mkdir+0x280/0x77c 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+0x288/0x578 fs/reiserfs/xattr.c:152
xattr_lookup+0x3c/0x268 fs/reiserfs/xattr.c:395
reiserfs_xattr_set_handle+0xe4/0xc10 fs/reiserfs/xattr.c:540
reiserfs_xattr_set+0x398/0x4b0 fs/reiserfs/xattr.c:640
trusted_set+0x98/0xec fs/reiserfs/xattr_trusted.c:31
__vfs_setxattr+0x388/0x3a4 fs/xattr.c:182
__vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216
__vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277
vfs_setxattr+0x1a8/0x344 fs/xattr.c:303
do_setxattr fs/xattr.c:588 [inline]
setxattr+0x250/0x2b4 fs/xattr.c:611
__do_sys_fsetxattr fs/xattr.c:667 [inline]
__se_sys_fsetxattr fs/xattr.c:656 [inline]
__arm64_sys_fsetxattr+0x1a8/0x224 fs/xattr.c:656
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #0 (&type->i_mutex_dir_key#13/3){+.+.}-{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:3787 [inline]
__lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011
lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
down_write_nested+0x118/0x26c kernel/locking/rwsem.c:1657
inode_lock_nested include/linux/fs.h:822 [inline]
open_xa_root fs/reiserfs/xattr.c:127 [inline]
open_xa_dir+0x11c/0x578 fs/reiserfs/xattr.c:152
reiserfs_for_each_xattr+0x16c/0x8d8 fs/reiserfs/xattr.c:252
reiserfs_delete_xattrs+0x2c/0xa4 fs/reiserfs/xattr.c:364
reiserfs_evict_inode+0x1dc/0x3f0 fs/reiserfs/inode.c:53
evict+0x260/0x68c fs/inode.c:587
iput_final fs/inode.c:1663 [inline]
iput+0x744/0x824 fs/inode.c:1689
reiserfs_new_inode+0xc24/0x1724 fs/reiserfs/inode.c:2164
reiserfs_symlink+0x424/0x68c fs/reiserfs/namei.c:1168
vfs_symlink+0x24c/0x3c8 fs/namei.c:4358
do_symlinkat+0x364/0x6b0 fs/namei.c:4387
__do_sys_symlinkat fs/namei.c:4404 [inline]
__se_sys_symlinkat fs/namei.c:4401 [inline]
__arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4401
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&sbi->lock);
lock(&type->i_mutex_dir_key#13/3);
lock(&sbi->lock);
lock(&type->i_mutex_dir_key#13/3);
*** DEADLOCK ***
3 locks held by syz-executor.2/7117:
#0: ffff0000cd18c460 (sb_writers#34){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377
#1: ffff00011b37b7e0 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline]
#1: ffff00011b37b7e0 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: filename_create+0x200/0x464 fs/namei.c:3765
#2: ffff0000c14d6090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x68/0xd8 fs/reiserfs/lock.c:78
stack backtrace:
CPU: 0 PID: 7117 Comm: syz-executor.2 Not tainted 5.15.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
dump_stack+0x1c/0x58 lib/dump_stack.c:113
print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2011
check_noncircular+0x2cc/0x378 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:3787 [inline]
__lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011
lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
down_write_nested+0x118/0x26c kernel/locking/rwsem.c:1657
inode_lock_nested include/linux/fs.h:822 [inline]
open_xa_root fs/reiserfs/xattr.c:127 [inline]
open_xa_dir+0x11c/0x578 fs/reiserfs/xattr.c:152
reiserfs_for_each_xattr+0x16c/0x8d8 fs/reiserfs/xattr.c:252
reiserfs_delete_xattrs+0x2c/0xa4 fs/reiserfs/xattr.c:364
reiserfs_evict_inode+0x1dc/0x3f0 fs/reiserfs/inode.c:53
evict+0x260/0x68c fs/inode.c:587
iput_final fs/inode.c:1663 [inline]
iput+0x744/0x824 fs/inode.c:1689
reiserfs_new_inode+0xc24/0x1724 fs/reiserfs/inode.c:2164
reiserfs_symlink+0x424/0x68c fs/reiserfs/namei.c:1168
vfs_symlink+0x24c/0x3c8 fs/namei.c:4358
do_symlinkat+0x364/0x6b0 fs/namei.c:4387
__do_sys_symlinkat fs/namei.c:4404 [inline]
__se_sys_symlinkat fs/namei.c:4401 [inline]
__arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4401
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584