REISERFS warning (device loop2): vs-13060 reiserfs_update_sd_size: stat data of object [1 2 0x0 SD] (nlink == 1) not found (pos 2)
REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.
======================================================
WARNING: possible circular locking dependency detected
6.1.131-syzkaller #0 Not tainted
------------------------------------------------------
syz.2.367/5812 is trying to acquire lock:
ffff0000daeda090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27
but task is already holding lock:
ffff0000f4121020 (&type->i_mutex_dir_key#16/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
ffff0000f4121020 (&type->i_mutex_dir_key#16/3){+.+.}-{3:3}, at: open_xa_root fs/reiserfs/xattr.c:127 [inline]
ffff0000f4121020 (&type->i_mutex_dir_key#16/3){+.+.}-{3:3}, at: open_xa_dir+0x11c/0x5d0 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#16/3){+.+.}-{3:3}:
down_write_nested+0x64/0x94 kernel/locking/rwsem.c:1689
inode_lock_nested include/linux/fs.h:793 [inline]
open_xa_root fs/reiserfs/xattr.c:127 [inline]
open_xa_dir+0x11c/0x5d0 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+0x418/0x894 fs/inode.c:705
iput_final fs/inode.c:1834 [inline]
iput+0x7c0/0x8a4 fs/inode.c:1860
reiserfs_create+0x2d0/0x5a4
lookup_open fs/namei.c:3482 [inline]
open_last_lookups fs/namei.c:3550 [inline]
path_openat+0xeac/0x2548 fs/namei.c:3780
do_filp_open+0x1bc/0x3cc fs/namei.c:3810
do_sys_openat2+0x128/0x3e0 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__arm64_sys_openat+0x1f0/0x240 fs/open.c:1345
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
-> #0 (&sbi->lock){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
__mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
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+0x288/0x5d0 fs/reiserfs/xattr.c:152
xattr_lookup+0x3c/0x268 fs/reiserfs/xattr.c:395
reiserfs_xattr_set_handle+0xe4/0xe90 fs/reiserfs/xattr.c:533
__reiserfs_set_acl+0x434/0x5b8 fs/reiserfs/xattr_acl.c:276
reiserfs_set_acl+0x428/0x60c fs/reiserfs/xattr_acl.c:50
set_posix_acl fs/posix_acl.c:1160 [inline]
posix_acl_xattr_set+0x2f8/0x398 fs/posix_acl.c:1189
__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:309
do_setxattr fs/xattr.c:594 [inline]
setxattr+0x230/0x294 fs/xattr.c:617
__do_sys_fsetxattr fs/xattr.c:673 [inline]
__se_sys_fsetxattr fs/xattr.c:662 [inline]
__arm64_sys_fsetxattr+0x1a8/0x224 fs/xattr.c:662
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&type->i_mutex_dir_key#16/3);
lock(&sbi->lock);
lock(&type->i_mutex_dir_key#16/3);
lock(&sbi->lock);
*** DEADLOCK ***
3 locks held by syz.2.367/5812:
#0: ffff0000dc0f6460 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:437
#1: ffff0000f41216c0 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff0000f41216c0 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:308
#2: ffff0000f4121020 (&type->i_mutex_dir_key#16/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
#2: ffff0000f4121020 (&type->i_mutex_dir_key#16/3){+.+.}-{3:3}, at: open_xa_root fs/reiserfs/xattr.c:127 [inline]
#2: ffff0000f4121020 (&type->i_mutex_dir_key#16/3){+.+.}-{3:3}, at: open_xa_dir+0x11c/0x5d0 fs/reiserfs/xattr.c:152
stack backtrace:
CPU: 1 PID: 5812 Comm: syz.2.367 Not tainted 6.1.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
__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:2048
check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2170
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
__mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
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+0x288/0x5d0 fs/reiserfs/xattr.c:152
xattr_lookup+0x3c/0x268 fs/reiserfs/xattr.c:395
reiserfs_xattr_set_handle+0xe4/0xe90 fs/reiserfs/xattr.c:533
__reiserfs_set_acl+0x434/0x5b8 fs/reiserfs/xattr_acl.c:276
reiserfs_set_acl+0x428/0x60c fs/reiserfs/xattr_acl.c:50
set_posix_acl fs/posix_acl.c:1160 [inline]
posix_acl_xattr_set+0x2f8/0x398 fs/posix_acl.c:1189
__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:309
do_setxattr fs/xattr.c:594 [inline]
setxattr+0x230/0x294 fs/xattr.c:617
__do_sys_fsetxattr fs/xattr.c:673 [inline]
__se_sys_fsetxattr fs/xattr.c:662 [inline]
__arm64_sys_fsetxattr+0x1a8/0x224 fs/xattr.c:662
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
REISERFS warning (device loop2): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block
REISERFS warning (device loop2): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block
REISERFS warning (device loop2): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block