ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.2.1460/10205 is trying to acquire lock: ffff888053f514e8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_init_acl+0x35b/0x840 fs/ocfs2/acl.c:367 but task is already holding lock: ffff888052d6a0e0 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x5c8/0x920 fs/ocfs2/journal.c:369 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x99/0x450 kernel/locking/rwsem.c:1568 ocfs2_start_trans+0x5c8/0x920 fs/ocfs2/journal.c:369 ocfs2_mknod+0x162b/0x27b0 fs/ocfs2/namei.c:365 ocfs2_create+0xf4/0x450 fs/ocfs2/namei.c:677 lookup_open.isra.0+0xc47/0x11b0 fs/namei.c:4511 open_last_lookups fs/namei.c:4611 [inline] path_openat+0x2291/0x31a0 fs/namei.c:4855 do_file_open+0x20e/0x430 fs/namei.c:4887 do_sys_openat2+0x10d/0x1e0 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (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+0x4b7/0x920 fs/ocfs2/journal.c:367 ocfs2_xattr_set+0x12e4/0x2bc0 fs/ocfs2/xattr.c:3674 ocfs2_xattr_user_set+0xbd/0x100 fs/ocfs2/xattr.c:7407 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:218 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:252 __vfs_setxattr_locked+0x127/0x2b0 fs/xattr.c:313 vfs_setxattr+0x14a/0x390 fs/xattr.c:339 do_setxattr+0x145/0x180 fs/xattr.c:654 filename_setxattr+0x167/0x1d0 fs/xattr.c:682 path_setxattrat+0x1ff/0x3b0 fs/xattr.c:726 __do_sys_setxattr fs/xattr.c:760 [inline] __se_sys_setxattr fs/xattr.c:756 [inline] __x64_sys_setxattr+0xc6/0x140 fs/xattr.c:756 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_reserve_suballoc_bits+0x11c/0x4b50 fs/ocfs2/suballoc.c:882 ocfs2_reserve_new_metadata_blocks+0x506/0xbe0 fs/ocfs2/suballoc.c:1078 ocfs2_init_xattr_set_ctxt fs/ocfs2/xattr.c:3308 [inline] ocfs2_xattr_set+0x1894/0x2bc0 fs/ocfs2/xattr.c:3665 ocfs2_xattr_user_set+0xbd/0x100 fs/ocfs2/xattr.c:7407 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:218 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:252 __vfs_setxattr_locked+0x127/0x2b0 fs/xattr.c:313 vfs_setxattr+0x14a/0x390 fs/xattr.c:339 do_setxattr+0x145/0x180 fs/xattr.c:654 filename_setxattr+0x167/0x1d0 fs/xattr.c:682 path_setxattrat+0x1ff/0x3b0 fs/xattr.c:726 __do_sys_setxattr fs/xattr.c:760 [inline] __se_sys_setxattr fs/xattr.c:756 [inline] __x64_sys_setxattr+0xc6/0x140 fs/xattr.c:756 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&oi->ip_xattr_sem){++++}-{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+0x1b1/0x370 kernel/locking/lockdep.c:5825 down_read+0x99/0x450 kernel/locking/rwsem.c:1568 ocfs2_init_acl+0x35b/0x840 fs/ocfs2/acl.c:367 ocfs2_mknod+0x175a/0x27b0 fs/ocfs2/namei.c:414 ocfs2_create+0xf4/0x450 fs/ocfs2/namei.c:677 lookup_open.isra.0+0xc47/0x11b0 fs/namei.c:4511 open_last_lookups fs/namei.c:4611 [inline] path_openat+0x2291/0x31a0 fs/namei.c:4855 do_file_open+0x20e/0x430 fs/namei.c:4887 do_sys_openat2+0x10d/0x1e0 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_creat fs/open.c:1448 [inline] __se_sys_creat fs/open.c:1442 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1442 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/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: &oi->ip_xattr_sem --> sb_internal#3 --> &journal->j_trans_barrier Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(&journal->j_trans_barrier); lock(sb_internal#3); lock(&journal->j_trans_barrier); rlock(&oi->ip_xattr_sem); *** DEADLOCK *** 8 locks held by syz.2.1460/10205: #0: ffff88807907c410 (sb_writers#14){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:4600 [inline] #0: ffff88807907c410 (sb_writers#14){.+.+}-{0:0}, at: path_openat+0x9b1/0x31a0 fs/namei.c:4855 #1: ffff888053f517a0 (&type->i_mutex_dir_key#11){++++}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] #1: ffff888053f517a0 (&type->i_mutex_dir_key#11){++++}-{4:4}, at: open_last_lookups fs/namei.c:4608 [inline] #1: ffff888053f517a0 (&type->i_mutex_dir_key#11){++++}-{4:4}, at: path_openat+0x220c/0x31a0 fs/namei.c:4855 #2: ffff8880772af9a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] #2: ffff8880772af9a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x11c/0x4b50 fs/ocfs2/suballoc.c:882 #3: ffff888053db97a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] #3: ffff888053db97a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x11c/0x4b50 fs/ocfs2/suballoc.c:882 #4: ffff8880772adda0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] #4: ffff8880772adda0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0xea/0xbf0 fs/ocfs2/localalloc.c:636 #5: ffff88807907c600 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_mknod+0x162b/0x27b0 fs/ocfs2/namei.c:365 #6: ffff888052d6a0e0 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x5c8/0x920 fs/ocfs2/journal.c:369 #7: ffff88807d8c0938 (jbd2_handle#2){.+.+}-{0:0}, at: start_this_handle+0xfaa/0x13a0 fs/jbd2/transaction.c:444 stack backtrace: CPU: 0 UID: 0 PID: 10205 Comm: syz.2.1460 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 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+0x1b1/0x370 kernel/locking/lockdep.c:5825 down_read+0x99/0x450 kernel/locking/rwsem.c:1568 ocfs2_init_acl+0x35b/0x840 fs/ocfs2/acl.c:367 ocfs2_mknod+0x175a/0x27b0 fs/ocfs2/namei.c:414 ocfs2_create+0xf4/0x450 fs/ocfs2/namei.c:677 lookup_open.isra.0+0xc47/0x11b0 fs/namei.c:4511 open_last_lookups fs/namei.c:4611 [inline] path_openat+0x2291/0x31a0 fs/namei.c:4855 do_file_open+0x20e/0x430 fs/namei.c:4887 do_sys_openat2+0x10d/0x1e0 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_creat fs/open.c:1448 [inline] __se_sys_creat fs/open.c:1442 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1442 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2322b9ce59 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:00007f23239c2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f2322e15fa0 RCX: 00007f2322b9ce59 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 00002000000000c0 RBP: 00007f2322c32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2322e16038 R14: 00007f2322e15fa0 R15: 00007ffd38489118