====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.1.5354/20694 is trying to acquire lock: ffff8880538fdf40 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] ffff8880538fdf40 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_xattr_set+0xd4d/0x2be0 fs/ocfs2/xattr.c:3653 but task is already holding lock: ffff888055f006f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2be0 fs/ocfs2/xattr.c:3614 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+0x99/0x460 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x35b/0x840 fs/ocfs2/acl.c:367 ocfs2_mknod+0x1772/0x27d0 fs/ocfs2/namei.c:414 ocfs2_mkdir+0xf2/0x460 fs/ocfs2/namei.c:660 vfs_mkdir+0x361/0x850 fs/namei.c:5239 filename_mkdirat+0x48b/0x5e0 fs/namei.c:5272 __do_sys_mkdirat fs/namei.c:5293 [inline] __se_sys_mkdirat fs/namei.c:5290 [inline] __x64_sys_mkdirat+0x89/0xc0 fs/namei.c:5290 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x99/0x460 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x5c8/0x920 fs/ocfs2/journal.c:369 ocfs2_shutdown_local_alloc+0x27a/0x820 fs/ocfs2/localalloc.c:417 ocfs2_dismount_volume+0x1ee/0x900 fs/ocfs2/super.c:1825 generic_shutdown_super+0x167/0x360 fs/super.c:646 kill_block_super+0x3b/0xa0 fs/super.c:1725 deactivate_locked_super+0xc1/0x1b0 fs/super.c:476 deactivate_super fs/super.c:509 [inline] deactivate_super+0xe7/0x110 fs/super.c:505 cleanup_mnt+0x21f/0x450 fs/namespace.c:1312 task_work_run+0x150/0x240 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0x100/0x4a0 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x67c/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (sb_internal#4){.+.+}-{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+0x4b7/0x920 fs/ocfs2/journal.c:367 ocfs2_remove_btree_range+0x3fc/0x1770 fs/ocfs2/alloc.c:5760 ocfs2_commit_truncate+0x795/0x2030 fs/ocfs2/alloc.c:7374 ocfs2_truncate_for_delete fs/ocfs2/inode.c:701 [inline] ocfs2_wipe_inode+0x569/0x1270 fs/ocfs2/inode.c:868 ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x809/0x1550 fs/ocfs2/inode.c:1299 evict+0x3c2/0xad0 fs/inode.c:846 iput_final fs/inode.c:1966 [inline] iput.part.0+0x605/0xf50 fs/inode.c:2015 iput+0x35/0x40 fs/inode.c:1981 filename_unlinkat+0x466/0x730 fs/namei.c:5550 __do_sys_unlinkat fs/namei.c:5575 [inline] __se_sys_unlinkat fs/namei.c:5567 [inline] __x64_sys_unlinkat+0xc0/0x130 fs/namei.c:5567 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1028 [inline] ocfs2_xattr_set+0xd4d/0x2be0 fs/ocfs2/xattr.c:3653 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234 __vfs_setxattr_locked+0x127/0x2b0 fs/xattr.c:295 vfs_setxattr+0x14a/0x390 fs/xattr.c:321 do_setxattr+0x145/0x180 fs/xattr.c:636 filename_setxattr+0x167/0x1d0 fs/xattr.c:664 path_setxattrat+0x1ff/0x3b0 fs/xattr.c:708 __do_sys_setxattr fs/xattr.c:742 [inline] __se_sys_setxattr fs/xattr.c:738 [inline] __x64_sys_setxattr+0xc6/0x140 fs/xattr.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 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 *** 3 locks held by syz.1.5354/20694: #0: ffff888025c9c420 (sb_writers#26){.+.+}-{0:0}, at: filename_setxattr+0xbf/0x1d0 fs/xattr.c:662 #1: ffff888055f009c0 (&sb->s_type->i_mutex_key#47){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #1: ffff888055f009c0 (&sb->s_type->i_mutex_key#47){+.+.}-{4:4}, at: vfs_setxattr+0x120/0x390 fs/xattr.c:320 #2: ffff888055f006f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2be0 fs/ocfs2/xattr.c:3614 stack backtrace: CPU: 0 UID: 0 PID: 20694 Comm: syz.1.5354 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043 check_noncircular+0x146/0x160 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1028 [inline] ocfs2_xattr_set+0xd4d/0x2be0 fs/ocfs2/xattr.c:3653 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234 __vfs_setxattr_locked+0x127/0x2b0 fs/xattr.c:295 vfs_setxattr+0x14a/0x390 fs/xattr.c:321 do_setxattr+0x145/0x180 fs/xattr.c:636 filename_setxattr+0x167/0x1d0 fs/xattr.c:664 path_setxattrat+0x1ff/0x3b0 fs/xattr.c:708 __do_sys_setxattr fs/xattr.c:742 [inline] __se_sys_setxattr fs/xattr.c:738 [inline] __x64_sys_setxattr+0xc6/0x140 fs/xattr.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f78d619c819 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:00007f78d7097028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007f78d6415fa0 RCX: 00007f78d619c819 RDX: 0000200000000400 RSI: 00002000000003c0 RDI: 00002000000001c0 RBP: 00007f78d6232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000002d R11: 0000000000000246 R12: 0000000000000000 R13: 00007f78d6416038 R14: 00007f78d6415fa0 R15: 00007ffdf0ecb468