====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.1.10947/2443 is trying to acquire lock: ffff88804cdf1800 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] ffff88804cdf1800 (&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: ffff88804cdf5c78 (&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_local_alloc_slide_window+0x320/0x1720 fs/ocfs2/localalloc.c:1252 ocfs2_reserve_local_alloc_bits+0x417/0xc00 fs/ocfs2/localalloc.c:669 ocfs2_reserve_clusters_with_limit+0x55a/0xe80 fs/ocfs2/suballoc.c:1237 ocfs2_symlink+0xf4e/0x3c10 fs/ocfs2/namei.c:1924 vfs_symlink fs/namei.c:5621 [inline] vfs_symlink+0x178/0x4d0 fs/namei.c:5600 filename_symlinkat+0x2a6/0x560 fs/namei.c:5646 __do_sys_symlinkat fs/namei.c:5666 [inline] __se_sys_symlinkat fs/namei.c:5661 [inline] __x64_sys_symlinkat+0x9c/0xe0 fs/namei.c:5661 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 -> #1 (sb_internal#5){.+.+}-{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_file+0xfa6/0x1840 fs/ocfs2/file.c:510 ocfs2_setattr+0x14cb/0x26a0 fs/ocfs2/file.c:1219 notify_change+0xb25/0x1330 fs/attr.c:556 do_truncate+0x1df/0x240 fs/open.c:68 vfs_truncate+0x538/0x720 fs/open.c:118 do_sys_truncate+0xee/0x190 fs/open.c:142 __do_sys_truncate fs/open.c:154 [inline] __se_sys_truncate fs/open.c:152 [inline] __x64_sys_truncate+0x54/0x80 fs/open.c:152 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.1.10947/2443: #0: ffff88804d46a420 (sb_writers#26){.+.+}-{0:0}, at: filename_setxattr+0xbf/0x1d0 fs/xattr.c:662 #1: ffff88804cdf5f40 (&sb->s_type->i_mutex_key#45){++++}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #1: ffff88804cdf5f40 (&sb->s_type->i_mutex_key#45){++++}-{4:4}, at: vfs_setxattr+0x120/0x390 fs/xattr.c:320 #2: ffff88804cdf5c78 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2be0 fs/ocfs2/xattr.c:3614 stack backtrace: CPU: 1 UID: 0 PID: 2443 Comm: syz.1.10947 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: 0033:0x7f466039c819 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:00007f4661295028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007f4660616090 RCX: 00007f466039c819 RDX: 0000200000000400 RSI: 00002000000003c0 RDI: 00002000000001c0 RBP: 00007f4660432c91 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000002d R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4660616128 R14: 00007f4660616090 R15: 00007ffd61c01298