ocfs2: Mounting device (7,1) on (node local, slot 0) with writeback data mode. ====================================================== WARNING: possible circular locking dependency detected 6.6.93-syzkaller #0 Not tainted ------------------------------------------------------ syz.1.1647/10324 is trying to acquire lock: ffff88805ba46ab8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_init_acl+0x2fa/0x720 fs/ocfs2/acl.c:366 but task is already holding lock: ffff888026722990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e7d/0x20c0 fs/jbd2/transaction.c:448 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1e9d/0x20c0 fs/jbd2/transaction.c:448 jbd2__journal_start+0x2bb/0x5b0 fs/jbd2/transaction.c:505 jbd2_journal_start+0x2a/0x40 fs/jbd2/transaction.c:544 ocfs2_start_trans+0x376/0x6c0 fs/ocfs2/journal.c:374 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:681 [inline] ocfs2_reserve_suballoc_bits+0x715/0x4360 fs/ocfs2/suballoc.c:828 ocfs2_reserve_new_metadata_blocks+0x404/0x940 fs/ocfs2/suballoc.c:978 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2839 [inline] ocfs2_extend_dir+0xc60/0x4760 fs/ocfs2/dir.c:3201 ocfs2_prepare_dir_for_insert+0x2fc7/0x5480 fs/ocfs2/dir.c:4322 ocfs2_mknod+0x818/0x20f0 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x196/0x410 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4113 do_mkdirat+0x1d4/0x440 fs/namei.c:4136 __do_sys_mkdirat fs/namei.c:4151 [inline] __se_sys_mkdirat fs/namei.c:4149 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4149 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #3 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x36a/0x6c0 fs/ocfs2/journal.c:372 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:681 [inline] ocfs2_reserve_suballoc_bits+0x715/0x4360 fs/ocfs2/suballoc.c:828 ocfs2_reserve_new_metadata_blocks+0x404/0x940 fs/ocfs2/suballoc.c:978 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2839 [inline] ocfs2_extend_dir+0xc60/0x4760 fs/ocfs2/dir.c:3201 ocfs2_prepare_dir_for_insert+0x2fc7/0x5480 fs/ocfs2/dir.c:4322 ocfs2_mknod+0x818/0x20f0 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x196/0x410 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4113 do_mkdirat+0x1d4/0x440 fs/namei.c:4136 __do_sys_mkdirat fs/namei.c:4151 [inline] __se_sys_mkdirat fs/namei.c:4149 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4149 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (sb_internal#5){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1633 [inline] sb_start_intwrite include/linux/fs.h:1755 [inline] ocfs2_start_trans+0x26b/0x6c0 fs/ocfs2/journal.c:370 ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline] ocfs2_truncate_file+0x611/0x13a0 fs/ocfs2/file.c:500 ocfs2_setattr+0x150d/0x1b20 fs/ocfs2/file.c:1211 notify_change+0xb0d/0xe10 fs/attr.c:499 do_truncate+0x19b/0x220 fs/open.c:66 handle_truncate fs/namei.c:3291 [inline] do_open fs/namei.c:3636 [inline] path_openat+0x298c/0x3190 fs/namei.c:3789 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_creat fs/open.c:1512 [inline] __se_sys_creat fs/open.c:1506 [inline] __x64_sys_creat+0x90/0xb0 fs/open.c:1506 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&oi->ip_alloc_sem){+.+.}-{3:3}: down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 ocfs2_try_remove_refcount_tree+0xb7/0x320 fs/ocfs2/refcounttree.c:932 ocfs2_truncate_file+0xd84/0x13a0 fs/ocfs2/file.c:521 ocfs2_setattr+0x150d/0x1b20 fs/ocfs2/file.c:1211 notify_change+0xb0d/0xe10 fs/attr.c:499 do_truncate+0x19b/0x220 fs/open.c:66 handle_truncate fs/namei.c:3291 [inline] do_open fs/namei.c:3636 [inline] path_openat+0x298c/0x3190 fs/namei.c:3789 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_creat fs/open.c:1512 [inline] __se_sys_creat fs/open.c:1506 [inline] __x64_sys_creat+0x90/0xb0 fs/open.c:1506 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&oi->ip_xattr_sem){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x2fa/0x720 fs/ocfs2/acl.c:366 ocfs2_mknod+0x12e5/0x20f0 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x196/0x410 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4113 do_mkdirat+0x1d4/0x440 fs/namei.c:4136 __do_sys_mkdirat fs/namei.c:4151 [inline] __se_sys_mkdirat fs/namei.c:4149 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4149 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 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.1.1647/10324: #0: ffff88807bc42418 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:403 #1: ffff88805ba46d98 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline] #1: ffff88805ba46d98 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: filename_create+0x1f6/0x460 fs/namei.c:3882 #2: ffff88805d5eb498 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #2: ffff88805d5eb498 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x165/0x4360 fs/ocfs2/suballoc.c:782 #3: ffff88805ba42658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #3: ffff88805ba42658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x165/0x4360 fs/ocfs2/suballoc.c:782 #4: ffff88805d5ed118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #4: ffff88805d5ed118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0x126/0x24b0 fs/ocfs2/localalloc.c:635 #5: ffff88807bc42608 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_mknod+0xe47/0x20f0 fs/ocfs2/namei.c:361 #6: ffff888024cd08e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x36a/0x6c0 fs/ocfs2/journal.c:372 #7: ffff888026722990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e7d/0x20c0 fs/jbd2/transaction.c:448 stack backtrace: CPU: 1 PID: 10324 Comm: syz.1.1647 Not tainted 6.6.93-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x2fa/0x720 fs/ocfs2/acl.c:366 ocfs2_mknod+0x12e5/0x20f0 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x196/0x410 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4113 do_mkdirat+0x1d4/0x440 fs/namei.c:4136 __do_sys_mkdirat fs/namei.c:4151 [inline] __se_sys_mkdirat fs/namei.c:4149 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4149 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f20f678d197 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007f20f75e3e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f20f75e3ef0 RCX: 00007f20f678d197 RDX: 00000000000001ff RSI: 0000200000000040 RDI: 00000000ffffff9c RBP: 00002000000002c0 R08: 00002000000001c0 R09: 0000000000000000 R10: 00002000000002c0 R11: 0000000000000246 R12: 0000200000000040 R13: 00007f20f75e3eb0 R14: 0000000000000000 R15: 0000000000000000