ocfs2: Mounting device (7,6) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.6.2594/19007 is trying to acquire lock: ffff8880780131b8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_init_acl+0x2fc/0x7d0 fs/ocfs2/acl.c:366 but task is already holding lock: ffff88805c2f6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x5e4/0x1410 fs/jbd2/transaction.c:444 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (jbd2_handle){++++}-{0:0}: start_this_handle+0x5ea/0x1410 fs/jbd2/transaction.c:444 jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x3b9/0x970 fs/ocfs2/journal.c:374 ocfs2_mknod+0xc19/0x2540 fs/ocfs2/namei.c:364 ocfs2_create+0x17c/0x460 fs/ocfs2/namei.c:676 lookup_open.isra.0+0x11d3/0x1580 fs/namei.c:3796 open_last_lookups fs/namei.c:3895 [inline] path_openat+0x893/0x2cb0 fs/namei.c:4131 do_filp_open+0x20b/0x470 fs/namei.c:4161 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x9b/0x480 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x3ae/0x970 fs/ocfs2/journal.c:372 ocfs2_mknod+0xc19/0x2540 fs/ocfs2/namei.c:364 ocfs2_create+0x17c/0x460 fs/ocfs2/namei.c:676 lookup_open.isra.0+0x11d3/0x1580 fs/namei.c:3796 open_last_lookups fs/namei.c:3895 [inline] path_openat+0x893/0x2cb0 fs/namei.c:4131 do_filp_open+0x20b/0x470 fs/namei.c:4161 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (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.h:1916 [inline] sb_start_intwrite include/linux/fs.h:2099 [inline] ocfs2_start_trans+0x29d/0x970 fs/ocfs2/journal.c:370 ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline] ocfs2_truncate_file+0x3ef/0x17c0 fs/ocfs2/file.c:500 ocfs2_setattr+0x1594/0x2560 fs/ocfs2/file.c:1212 notify_change+0x6d2/0x12a0 fs/attr.c:546 do_truncate+0x1d7/0x230 fs/open.c:68 handle_truncate fs/namei.c:3596 [inline] do_open fs/namei.c:3979 [inline] path_openat+0x2678/0x2cb0 fs/namei.c:4134 do_filp_open+0x20b/0x470 fs/namei.c:4161 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_creat fs/open.c:1530 [inline] __se_sys_creat fs/open.c:1524 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1524 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&oi->ip_alloc_sem){++++}-{4:4}: down_write+0x92/0x200 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xa7/0x320 fs/ocfs2/refcounttree.c:932 ocfs2_truncate_file+0xbba/0x17c0 fs/ocfs2/file.c:521 ocfs2_setattr+0x1594/0x2560 fs/ocfs2/file.c:1212 notify_change+0x6d2/0x12a0 fs/attr.c:546 do_truncate+0x1d7/0x230 fs/open.c:68 handle_truncate fs/namei.c:3596 [inline] do_open fs/namei.c:3979 [inline] path_openat+0x2678/0x2cb0 fs/namei.c:4134 do_filp_open+0x20b/0x470 fs/namei.c:4161 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_creat fs/open.c:1530 [inline] __se_sys_creat fs/open.c:1524 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1524 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 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+0x126f/0x1c90 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 down_read+0x9b/0x480 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x2fc/0x7d0 fs/ocfs2/acl.c:366 ocfs2_mknod+0xd5c/0x2540 fs/ocfs2/namei.c:413 ocfs2_create+0x17c/0x460 fs/ocfs2/namei.c:676 lookup_open.isra.0+0x11d3/0x1580 fs/namei.c:3796 open_last_lookups fs/namei.c:3895 [inline] path_openat+0x893/0x2cb0 fs/namei.c:4131 do_filp_open+0x20b/0x470 fs/namei.c:4161 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_open fs/open.c:1460 [inline] __se_sys_open fs/open.c:1456 [inline] __x64_sys_open+0x153/0x1e0 fs/open.c:1456 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 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 --> &journal->j_trans_barrier --> jbd2_handle Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(jbd2_handle); lock(&journal->j_trans_barrier); lock(jbd2_handle); rlock(&oi->ip_xattr_sem); *** DEADLOCK *** 8 locks held by syz.6.2594/19007: #0: ffff888051dac420 (sb_writers#24){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3884 [inline] #0: ffff888051dac420 (sb_writers#24){.+.+}-{0:0}, at: path_openat+0x1f0f/0x2cb0 fs/namei.c:4131 #1: ffff888078013480 (&type->i_mutex_dir_key#16){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff888078013480 (&type->i_mutex_dir_key#16){+.+.}-{4:4}, at: open_last_lookups fs/namei.c:3892 [inline] #1: ffff888078013480 (&type->i_mutex_dir_key#16){+.+.}-{4:4}, at: path_openat+0x1534/0x2cb0 fs/namei.c:4131 #2: ffff8880501309c0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #2: ffff8880501309c0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x11c/0x4910 fs/ocfs2/suballoc.c:788 #3: ffff8880780142c0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #3: ffff8880780142c0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x11c/0x4910 fs/ocfs2/suballoc.c:788 #4: ffff888050136d80 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #4: ffff888050136d80 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0xee/0xc60 fs/ocfs2/localalloc.c:636 #5: ffff888051dac610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_mknod+0xc19/0x2540 fs/ocfs2/namei.c:364 #6: ffff8880797ec0e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3ae/0x970 fs/ocfs2/journal.c:372 #7: ffff88805c2f6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x5e4/0x1410 fs/jbd2/transaction.c:444 stack backtrace: CPU: 1 UID: 0 PID: 19007 Comm: syz.6.2594 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2043 check_noncircular+0x14c/0x170 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+0x126f/0x1c90 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 down_read+0x9b/0x480 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x2fc/0x7d0 fs/ocfs2/acl.c:366 ocfs2_mknod+0xd5c/0x2540 fs/ocfs2/namei.c:413 ocfs2_create+0x17c/0x460 fs/ocfs2/namei.c:676 lookup_open.isra.0+0x11d3/0x1580 fs/namei.c:3796 open_last_lookups fs/namei.c:3895 [inline] path_openat+0x893/0x2cb0 fs/namei.c:4131 do_filp_open+0x20b/0x470 fs/namei.c:4161 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_open fs/open.c:1460 [inline] __se_sys_open fs/open.c:1456 [inline] __x64_sys_open+0x153/0x1e0 fs/open.c:1456 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5a3b38f6c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5a3c1a6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f5a3b5e5fa0 RCX: 00007f5a3b38f6c9 RDX: 0000000000000021 RSI: 0000000000066842 RDI: 00002000000000c0 RBP: 00007f5a3b411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5a3b5e6038 R14: 00007f5a3b5e5fa0 R15: 00007ffe14af8e28