ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.4.220/7876 is trying to acquire lock: ffff0000d3d9c610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1459 [inline] ffff0000d3d9c610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline] ffff0000d3d9c610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x8cc/0x3868 fs/ocfs2/aops.c:1649 but task is already holding lock: ffff0000f5314da0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x190/0x30c fs/ocfs2/aops.c:1882 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&oi->ip_alloc_sem){++++}-{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_remove_acl+0x400/0x65c fs/posix_acl.c:1241 removexattr fs/xattr.c:1022 [inline] filename_removexattr fs/xattr.c:1052 [inline] path_removexattrat+0x424/0x600 fs/xattr.c:1088 __do_sys_removexattr fs/xattr.c:1100 [inline] __se_sys_removexattr fs/xattr.c:1097 [inline] __arm64_sys_removexattr+0x64/0x7c fs/xattr.c:1097 __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_symlink+0x19a4/0x1ff8 fs/ocfs2/namei.c:2044 vfs_symlink+0x234/0x264 fs/namei.c:5514 do_symlinkat+0x178/0x524 fs/namei.c:5541 __do_sys_symlinkat fs/namei.c:5562 [inline] __se_sys_symlinkat fs/namei.c:5559 [inline] __arm64_sys_symlinkat+0x9c/0xb4 fs/namei.c:5559 __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_modify_bh+0xe4/0x43c fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x104c/0x1364 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x6bc/0xa90 fs/quota/dquot.c:2462 dquot_load_quota_inode+0x274/0x4e4 fs/quota/dquot.c:2499 ocfs2_enable_quotas+0x17c/0x3b4 fs/ocfs2/super.c:930 ocfs2_fill_super+0x3fe4/0x532c fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x360/0x414 fs/super.c:1691 get_tree_bdev+0x2c/0x3c fs/super.c:1714 ocfs2_get_tree+0x28/0x38 fs/ocfs2/super.c:1184 vfs_get_tree+0x90/0x28c fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount+0x284/0x944 fs/namespace.c:3712 path_mount+0x5b4/0xdfc fs/namespace.c:4022 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount fs/namespace.c:4201 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4201 __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#4){.+.+}-{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_write_begin_inline fs/ocfs2/aops.c:1459 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline] ocfs2_write_begin_nolock+0x8cc/0x3868 fs/ocfs2/aops.c:1649 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1884 generic_perform_write+0x244/0x7bc mm/filemap.c:4314 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4431 ocfs2_file_write_iter+0x12f8/0x1b8c fs/ocfs2/file.c:2475 do_iter_readv_writev+0x4bc/0x720 fs/read_write.c:-1 vfs_writev+0x29c/0x7cc fs/read_write.c:1057 do_pwritev fs/read_write.c:1153 [inline] __do_sys_pwritev2 fs/read_write.c:1211 [inline] __se_sys_pwritev2 fs/read_write.c:1202 [inline] __arm64_sys_pwritev2+0x1bc/0x2cc fs/read_write.c:1202 __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 other info that might help us debug this: Chain exists of: sb_internal#4 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(&oi->ip_xattr_sem); lock(&oi->ip_alloc_sem); rlock(sb_internal#4); *** DEADLOCK *** 3 locks held by syz.4.220/7876: #0: ffff0000d3d9c420 (sb_writers#17){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2681 [inline] #0: ffff0000d3d9c420 (sb_writers#17){.+.+}-{0:0}, at: vfs_writev+0x21c/0x7cc fs/read_write.c:1055 #1: ffff0000f5315100 (&sb->s_type->i_mutex_key#34){++++}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #1: ffff0000f5315100 (&sb->s_type->i_mutex_key#34){++++}-{4:4}, at: ocfs2_file_write_iter+0x388/0x1b8c fs/ocfs2/file.c:2405 #2: ffff0000f5314da0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x190/0x30c fs/ocfs2/aops.c:1882 stack backtrace: CPU: 0 UID: 0 PID: 7876 Comm: syz.4.220 Not tainted syzkaller #0 PREEMPT 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_write_begin_inline fs/ocfs2/aops.c:1459 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline] ocfs2_write_begin_nolock+0x8cc/0x3868 fs/ocfs2/aops.c:1649 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1884 generic_perform_write+0x244/0x7bc mm/filemap.c:4314 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4431 ocfs2_file_write_iter+0x12f8/0x1b8c fs/ocfs2/file.c:2475 do_iter_readv_writev+0x4bc/0x720 fs/read_write.c:-1 vfs_writev+0x29c/0x7cc fs/read_write.c:1057 do_pwritev fs/read_write.c:1153 [inline] __do_sys_pwritev2 fs/read_write.c:1211 [inline] __se_sys_pwritev2 fs/read_write.c:1202 [inline] __arm64_sys_pwritev2+0x1bc/0x2cc fs/read_write.c:1202 __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 (syz.4.220,7876,0):ocfs2_get_clusters:616 ERROR: status = -34 (syz.4.220,7876,0):ocfs2_reflink_remap_extent:4526 ERROR: status = -34 (syz.4.220,7876,0):ocfs2_reflink_remap_blocks:4685 ERROR: status = -34 (syz.4.220,7876,0):ocfs2_remap_file_range:2753 ERROR: status = -34