overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.6.466/10253 is trying to acquire lock:
ffff8880647cdf40 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
ffff8880647cdf40 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_xattr_set+0xba7/0x13e0 fs/ocfs2/xattr.c:3652
but task is already holding lock:
ffff888064601918 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x475/0x13e0 fs/ocfs2/xattr.c:3613
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&oi->ip_xattr_sem){++++}-{4:4}:
down_read+0x97/0x200 kernel/locking/rwsem.c:1537
ocfs2_xattr_get+0xfa/0x270 fs/ocfs2/xattr.c:1368
__vfs_getxattr+0x3f4/0x430 fs/xattr.c:423
smk_fetch+0xb4/0x140 security/smack/smack_lsm.c:289
smack_d_instantiate+0x757/0x990 security/smack/smack_lsm.c:3653
security_d_instantiate+0x106/0x1d0 security/security.c:3601
d_instantiate+0x57/0xc0 fs/dcache.c:2009
ocfs2_mknod+0x1a4a/0x2210 fs/ocfs2/namei.c:454
ocfs2_mkdir+0x181/0x430 fs/ocfs2/namei.c:660
vfs_mkdir+0x40b/0x630 fs/namei.c:5233
filename_mkdirat+0x289/0x520 fs/namei.c:5266
__do_sys_mkdirat fs/namei.c:5287 [inline]
__se_sys_mkdirat+0x35/0x150 fs/namei.c:5284
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
down_read+0x97/0x200 kernel/locking/rwsem.c:1537
ocfs2_start_trans+0x3ac/0x700 fs/ocfs2/journal.c:372
ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1254 [inline]
ocfs2_reserve_local_alloc_bits+0xb49/0x2610 fs/ocfs2/localalloc.c:669
ocfs2_reserve_clusters_with_limit+0x1b9/0xc20 fs/ocfs2/suballoc.c:1169
ocfs2_expand_inline_dir fs/ocfs2/dir.c:2883 [inline]
ocfs2_extend_dir+0x74e/0x49b0 fs/ocfs2/dir.c:3228
ocfs2_prepare_dir_for_insert+0x3452/0x52c0 fs/ocfs2/dir.c:4346
ocfs2_mknod+0x823/0x2210 fs/ocfs2/namei.c:298
ocfs2_mkdir+0x181/0x430 fs/ocfs2/namei.c:660
vfs_mkdir+0x40b/0x630 fs/namei.c:5233
filename_mkdirat+0x289/0x520 fs/namei.c:5266
__do_sys_mkdirat fs/namei.c:5287 [inline]
__se_sys_mkdirat+0x35/0x150 fs/namei.c:5284
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (sb_internal#3){.+.+}-{0:0}:
percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline]
percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline]
__sb_start_write include/linux/fs/super.h:19 [inline]
sb_start_intwrite include/linux/fs/super.h:177 [inline]
ocfs2_start_trans+0x2ac/0x700 fs/ocfs2/journal.c:370
ocfs2_remove_btree_range+0x84c/0x1610 fs/ocfs2/alloc.c:5760
ocfs2_commit_truncate+0xbb8/0x22f0 fs/ocfs2/alloc.c:7374
ocfs2_truncate_for_delete fs/ocfs2/inode.c:701 [inline]
ocfs2_wipe_inode fs/ocfs2/inode.c:868 [inline]
ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]
ocfs2_evict_inode+0x1023/0x42c0 fs/ocfs2/inode.c:1299
evict+0x61e/0xb10 fs/inode.c:837
d_delete_notify include/linux/fsnotify.h:377 [inline]
vfs_rmdir+0x42a/0x6e0 fs/namei.c:5351
filename_rmdir+0x292/0x520 fs/namei.c:5393
__do_sys_rmdir fs/namei.c:5416 [inline]
__se_sys_rmdir+0x2e/0x140 fs/namei.c:5413
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868
down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
inode_lock include/linux/fs.h:1028 [inline]
ocfs2_xattr_set+0xba7/0x13e0 fs/ocfs2/xattr.c:3652
__vfs_setxattr+0x43c/0x480 fs/xattr.c:200
__vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234
vfs_setxattr+0x163/0x370 fs/xattr.c:321
ovl_do_setxattr fs/overlayfs/overlayfs.h:317 [inline]
ovl_setxattr fs/overlayfs/overlayfs.h:329 [inline]
ovl_make_workdir fs/overlayfs/super.c:728 [inline]
ovl_get_workdir fs/overlayfs/super.c:840 [inline]
ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
ovl_fill_super+0x4b50/0x5e60 fs/overlayfs/super.c:1567
vfs_get_super fs/super.c:1327 [inline]
get_tree_nodev+0xbb/0x150 fs/super.c:1346
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3760 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3836
do_mount fs/namespace.c:4159 [inline]
__do_sys_mount fs/namespace.c:4348 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4325
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE] --> &journal->j_trans_barrier --> &oi->ip_xattr_sem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&oi->ip_xattr_sem);
lock(&journal->j_trans_barrier);
lock(&oi->ip_xattr_sem);
lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]);
*** DEADLOCK ***
4 locks held by syz.6.466/10253:
#0: ffff8880379ea0d0 (&type->s_umount_key#65/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xac0 fs/super.c:345
#1: ffff88803942a480 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
#2: ffff888064601c40 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
#2: ffff888064601c40 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: vfs_setxattr+0x13e/0x370 fs/xattr.c:320
#3: ffff888064601918 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x475/0x13e0 fs/ocfs2/xattr.c:3613
stack backtrace:
CPU: 1 UID: 0 PID: 10253 Comm: syz.6.466 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043
check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868
down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
inode_lock include/linux/fs.h:1028 [inline]
ocfs2_xattr_set+0xba7/0x13e0 fs/ocfs2/xattr.c:3652
__vfs_setxattr+0x43c/0x480 fs/xattr.c:200
__vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234
vfs_setxattr+0x163/0x370 fs/xattr.c:321
ovl_do_setxattr fs/overlayfs/overlayfs.h:317 [inline]
ovl_setxattr fs/overlayfs/overlayfs.h:329 [inline]
ovl_make_workdir fs/overlayfs/super.c:728 [inline]
ovl_get_workdir fs/overlayfs/super.c:840 [inline]
ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
ovl_fill_super+0x4b50/0x5e60 fs/overlayfs/super.c:1567
vfs_get_super fs/super.c:1327 [inline]
get_tree_nodev+0xbb/0x150 fs/super.c:1346
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3760 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3836
do_mount fs/namespace.c:4159 [inline]
__do_sys_mount fs/namespace.c:4348 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4325
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f90cc60c629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90ca85e028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f90cc885fa0 RCX: 00007f90cc60c629
RDX: 0000200000000b80 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007f90cc6a2b39 R08: 0000200000000040 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f90cc886038 R14: 00007f90cc885fa0 R15: 00007ffd382ef048
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/ocfs2/xattr.c:1985:3
index 2 is out of range for type 'struct ocfs2_xattr_entry[] __counted_by(xh_count)' (aka 'struct ocfs2_xattr_entry[]')
CPU: 1 UID: 0 PID: 10253 Comm: syz.6.466 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
ubsan_epilogue+0xa/0x30 lib/ubsan.c:233
__ubsan_handle_out_of_bounds+0xe8/0xf0 lib/ubsan.c:455
ocfs2_xa_remove_entry+0x49e/0x670 fs/ocfs2/xattr.c:1985
ocfs2_xa_remove fs/ocfs2/xattr.c:2073 [inline]
ocfs2_xa_set+0xdb2/0x2ec0 fs/ocfs2/xattr.c:2277
ocfs2_xattr_block_set+0x3e0/0x3350 fs/ocfs2/xattr.c:3015
__ocfs2_xattr_set_handle+0x262/0xf50 fs/ocfs2/xattr.c:-1
ocfs2_xattr_set+0xf3f/0x13e0 fs/ocfs2/xattr.c:3680
__vfs_removexattr+0x431/0x470 fs/xattr.c:518
__vfs_removexattr_locked+0xe2/0x280 fs/xattr.c:553
vfs_removexattr+0x7f/0x230 fs/xattr.c:575
ovl_do_removexattr fs/overlayfs/overlayfs.h:335 [inline]
ovl_removexattr fs/overlayfs/overlayfs.h:343 [inline]
ovl_make_workdir fs/overlayfs/super.c:760 [inline]
ovl_get_workdir fs/overlayfs/super.c:840 [inline]
ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
ovl_fill_super+0x4c39/0x5e60 fs/overlayfs/super.c:1567
vfs_get_super fs/super.c:1327 [inline]
get_tree_nodev+0xbb/0x150 fs/super.c:1346
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3760 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3836
do_mount fs/namespace.c:4159 [inline]
__do_sys_mount fs/namespace.c:4348 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4325
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f90cc60c629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90ca85e028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f90cc885fa0 RCX: 00007f90cc60c629
RDX: 0000200000000b80 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007f90cc6a2b39 R08: 0000200000000040 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f90cc886038 R14: 00007f90cc885fa0 R15: 00007ffd382ef048
---[ end trace ]---