====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.5.224/7970 is trying to acquire lock: ffff0000c324e610 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline] ffff0000c324e610 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_truncate_file+0x570/0x12f4 fs/ocfs2/file.c:500 but task is already holding lock: ffff0000e0eb3120 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_truncate_file+0x2fc/0x12f4 fs/ocfs2/file.c:471 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:933 ocfs2_xattr_set+0x460/0xe9c fs/ocfs2/xattr.c:3699 ocfs2_set_acl+0x574/0x628 fs/ocfs2/acl.c:255 ocfs2_iop_set_acl+0x190/0x25c fs/ocfs2/acl.c:287 set_posix_acl fs/posix_acl.c:954 [inline] vfs_set_acl+0x704/0x96c fs/posix_acl.c:1133 do_set_acl+0xc8/0x1a8 fs/posix_acl.c:1278 do_setxattr fs/xattr.c:633 [inline] filename_setxattr+0x268/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __arm64_sys_setxattr+0xc0/0xdc fs/xattr.c:743 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #2 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x58/0x308 kernel/locking/rwsem.c:1537 ocfs2_xattr_get+0xe8/0x220 fs/ocfs2/xattr.c:1368 ocfs2_xattr_security_get+0x40/0x54 fs/ocfs2/xattr.c:7261 __vfs_getxattr+0x394/0x3c0 fs/xattr.c:423 smk_fetch+0xc4/0x150 security/smack/smack_lsm.c:289 smack_d_instantiate+0x53c/0x7a4 security/smack/smack_lsm.c:3653 security_d_instantiate+0x100/0x204 security/security.c:3601 d_instantiate+0x5c/0xac fs/dcache.c:1999 ocfs2_mknod+0x14fc/0x1cf0 fs/ocfs2/namei.c:454 ocfs2_mkdir+0x178/0x474 fs/ocfs2/namei.c:660 vfs_mkdir+0x408/0x48c fs/namei.c:5130 do_mkdirat+0x238/0x448 fs/namei.c:5164 __do_sys_mkdirat fs/namei.c:5186 [inline] __se_sys_mkdirat fs/namei.c:5184 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:5184 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x308 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x35c/0x6b0 fs/ocfs2/journal.c:372 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1254 [inline] ocfs2_reserve_local_alloc_bits+0xb90/0x26a8 fs/ocfs2/localalloc.c:669 ocfs2_reserve_clusters_with_limit+0x198/0x9e0 fs/ocfs2/suballoc.c:1169 ocfs2_reserve_clusters+0x3c/0x50 fs/ocfs2/suballoc.c:1230 ocfs2_mknod+0xbe0/0x1cf0 fs/ocfs2/namei.c:358 ocfs2_mkdir+0x178/0x474 fs/ocfs2/namei.c:660 vfs_mkdir+0x408/0x48c fs/namei.c:5130 do_mkdirat+0x238/0x448 fs/namei.c:5164 __do_sys_mkdirat fs/namei.c:5186 [inline] __se_sys_mkdirat fs/namei.c:5184 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:5184 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #0 (sb_internal#3){.+.+}-{0:0}: 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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868 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+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline] ocfs2_truncate_file+0x570/0x12f4 fs/ocfs2/file.c:500 ocfs2_setattr+0x116c/0x1818 fs/ocfs2/file.c:1218 notify_change+0xa0c/0xcb8 fs/attr.c:546 do_truncate+0x198/0x210 fs/open.c:68 coredump_file fs/coredump.c:964 [inline] do_coredump fs/coredump.c:1099 [inline] vfs_coredump+0x26c8/0x30ac fs/coredump.c:1200 get_signal+0xe38/0x12f8 kernel/signal.c:3019 arch_do_signal_or_restart+0x1b8/0x46d4 arch/arm64/kernel/signal.c:1619 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x88/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_ia+0x1d0/0x300 arch/arm64/kernel/entry-common.c:559 el0t_64_sync_handler+0xfc/0x12c arch/arm64/kernel/entry-common.c:749 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 other info that might help us debug this: Chain exists of: sb_internal#3 --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&oi->ip_xattr_sem); lock(&ocfs2_file_ip_alloc_sem_key); rlock(sb_internal#3); *** DEADLOCK *** 2 locks held by syz.5.224/7970: #0: ffff0000e0eb3480 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:1032 [inline] #0: ffff0000e0eb3480 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: do_truncate+0x164/0x210 fs/open.c:63 #1: ffff0000e0eb3120 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_truncate_file+0x2fc/0x12f4 fs/ocfs2/file.c:471 stack backtrace: CPU: 1 UID: 0 PID: 7970 Comm: syz.5.224 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (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:2043 check_noncircular+0x154/0x174 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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868 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+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline] ocfs2_truncate_file+0x570/0x12f4 fs/ocfs2/file.c:500 ocfs2_setattr+0x116c/0x1818 fs/ocfs2/file.c:1218 notify_change+0xa0c/0xcb8 fs/attr.c:546 do_truncate+0x198/0x210 fs/open.c:68 coredump_file fs/coredump.c:964 [inline] do_coredump fs/coredump.c:1099 [inline] vfs_coredump+0x26c8/0x30ac fs/coredump.c:1200 get_signal+0xe38/0x12f8 kernel/signal.c:3019 arch_do_signal_or_restart+0x1b8/0x46d4 arch/arm64/kernel/signal.c:1619 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x88/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_ia+0x1d0/0x300 arch/arm64/kernel/entry-common.c:559 el0t_64_sync_handler+0xfc/0x12c arch/arm64/kernel/entry-common.c:749 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596