ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.15.0-rc2-syzkaller-gc72692105976 #0 Not tainted ------------------------------------------------------ syz.2.79/7005 is trying to acquire lock: ffff0000dbecb1b8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set_handle+0x2a8/0x5e4 fs/ocfs2/xattr.c:3501 but task is already holding lock: ffff0000d2938950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe4c/0x10dc fs/jbd2/transaction.c:442 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (jbd2_handle){++++}-{0:0}: start_this_handle+0xe74/0x10dc fs/jbd2/transaction.c:444 jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:501 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:540 ocfs2_start_trans+0x368/0x6ac fs/ocfs2/journal.c:352 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:685 [inline] ocfs2_reserve_suballoc_bits+0x630/0x3b60 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:982 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2837 [inline] ocfs2_extend_dir+0x970/0x3964 fs/ocfs2/dir.c:3199 ocfs2_prepare_dir_for_insert+0x281c/0x4664 fs/ocfs2/dir.c:4304 ocfs2_mknod+0x6ec/0x1cf0 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4324 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4372 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #5 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x35c/0x6ac fs/ocfs2/journal.c:350 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:685 [inline] ocfs2_reserve_suballoc_bits+0x630/0x3b60 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:982 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2837 [inline] ocfs2_extend_dir+0x970/0x3964 fs/ocfs2/dir.c:3199 ocfs2_prepare_dir_for_insert+0x281c/0x4664 fs/ocfs2/dir.c:4304 ocfs2_mknod+0x6ec/0x1cf0 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4324 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4372 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #4 (sb_internal#5){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:52 [inline] __sb_start_write include/linux/fs.h:1783 [inline] sb_start_intwrite include/linux/fs.h:1966 [inline] ocfs2_start_trans+0x1f4/0x6ac fs/ocfs2/journal.c:348 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:685 [inline] ocfs2_reserve_suballoc_bits+0x630/0x3b60 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:982 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2837 [inline] ocfs2_extend_dir+0x970/0x3964 fs/ocfs2/dir.c:3199 ocfs2_prepare_dir_for_insert+0x281c/0x4664 fs/ocfs2/dir.c:4304 ocfs2_mknod+0x6ec/0x1cf0 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4324 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4372 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #3 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] ocfs2_reserve_suballoc_bits+0x12c/0x3b60 fs/ocfs2/suballoc.c:786 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1132 [inline] ocfs2_reserve_clusters_with_limit+0x290/0x9e0 fs/ocfs2/suballoc.c:1177 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:674 [inline] ocfs2_reserve_suballoc_bits+0x610/0x3b60 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:982 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2837 [inline] ocfs2_extend_dir+0x970/0x3964 fs/ocfs2/dir.c:3199 ocfs2_prepare_dir_for_insert+0x281c/0x4664 fs/ocfs2/dir.c:4304 ocfs2_mknod+0x6ec/0x1cf0 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4324 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4372 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] ocfs2_reserve_suballoc_bits+0x12c/0x3b60 fs/ocfs2/suballoc.c:786 ocfs2_reserve_new_metadata_blocks+0x368/0x810 fs/ocfs2/suballoc.c:982 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2837 [inline] ocfs2_extend_dir+0x970/0x3964 fs/ocfs2/dir.c:3199 ocfs2_prepare_dir_for_insert+0x281c/0x4664 fs/ocfs2/dir.c:4304 ocfs2_mknod+0x6ec/0x1cf0 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4324 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4372 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #1 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x460/0xe9c fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x574/0x628 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x190/0x25c fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_set_acl+0x70c/0x974 fs/posix_acl.c:1133 do_set_acl+0xc8/0x1a8 fs/posix_acl.c:1278 do_setxattr fs/xattr.c:633 [inline] file_setxattr+0x210/0x294 fs/xattr.c:646 path_setxattrat+0x2d0/0x314 fs/xattr.c:711 __do_sys_fsetxattr fs/xattr.c:761 [inline] __se_sys_fsetxattr fs/xattr.c:758 [inline] __arm64_sys_fsetxattr+0xc0/0xdc fs/xattr.c:758 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #0 (&oi->ip_xattr_sem){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1728/0x3058 kernel/locking/lockdep.c:5235 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 ocfs2_xattr_set_handle+0x2a8/0x5e4 fs/ocfs2/xattr.c:3501 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7307 ocfs2_mknod+0x106c/0x1cf0 fs/ocfs2/namei.c:419 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4324 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4372 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 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); lock(&oi->ip_xattr_sem); *** DEADLOCK *** 8 locks held by syz.2.79/7005: #0: ffff0000d179a420 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:556 #1: ffff0000dc94c2c0 (&type->i_mutex_dir_key#14/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:902 [inline] #1: ffff0000dc94c2c0 (&type->i_mutex_dir_key#14/1){+.+.}-{4:4}, at: filename_create+0x1ac/0x32c fs/namei.c:4097 #2: ffff0000f6da1800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #2: ffff0000f6da1800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x12c/0x3b60 fs/ocfs2/suballoc.c:786 #3: ffff0000f6da09c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #3: ffff0000f6da09c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x12c/0x3b60 fs/ocfs2/suballoc.c:786 #4: ffff0000f6da3480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #4: ffff0000f6da3480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x104/0x26a0 fs/ocfs2/localalloc.c:636 #5: ffff0000d179a610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_mknod+0xc50/0x1cf0 fs/ocfs2/namei.c:361 #6: ffff0000cc93b4e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x35c/0x6ac fs/ocfs2/journal.c:350 #7: ffff0000d2938950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe4c/0x10dc fs/jbd2/transaction.c:442 stack backtrace: CPU: 0 UID: 0 PID: 7005 Comm: syz.2.79 Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2079 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1728/0x3058 kernel/locking/lockdep.c:5235 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 ocfs2_xattr_set_handle+0x2a8/0x5e4 fs/ocfs2/xattr.c:3501 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7307 ocfs2_mknod+0x106c/0x1cf0 fs/ocfs2/namei.c:419 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4324 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4372 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600