ocfs2: Mounting device (7,8) on (node local, slot 0) with ordered data mode. overlayfs: failed to resolve './file1': -2 ====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc3-syzkaller-g06a573612678 #0 Not tainted ------------------------------------------------------ syz.8.304/8202 is trying to acquire lock: ffff0000de2b9800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] ffff0000de2b9800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x108/0x24cc fs/ocfs2/localalloc.c:636 but task is already holding lock: ffff0000de2bb1b8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x4e0/0x1448 fs/ocfs2/xattr.c:3583 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 ocfs2_xattr_set_handle+0x40c/0x824 fs/ocfs2/xattr.c:3501 ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7307 ocfs2_mknod+0x1408/0x2438 fs/ocfs2/namei.c:419 ocfs2_mkdir+0x194/0x4d4 fs/ocfs2/namei.c:657 vfs_mkdir+0x27c/0x410 fs/namei.c:4311 do_mkdirat+0x248/0x574 fs/namei.c:4334 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4347 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #3 (jbd2_handle){++++}-{0:0}: start_this_handle+0xf34/0x11c4 fs/jbd2/transaction.c:448 jbd2__journal_start+0x298/0x544 fs/jbd2/transaction.c:505 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:544 ocfs2_start_trans+0x3d0/0x71c fs/ocfs2/journal.c:352 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:685 [inline] ocfs2_reserve_suballoc_bits+0x840/0x4254 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x384/0x848 fs/ocfs2/suballoc.c:982 ocfs2_mknod+0xdc8/0x2438 fs/ocfs2/namei.c:347 ocfs2_mkdir+0x194/0x4d4 fs/ocfs2/namei.c:657 vfs_mkdir+0x27c/0x410 fs/namei.c:4311 do_mkdirat+0x248/0x574 fs/namei.c:4334 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4347 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x3c4/0x71c fs/ocfs2/journal.c:350 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:685 [inline] ocfs2_reserve_suballoc_bits+0x840/0x4254 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x384/0x848 fs/ocfs2/suballoc.c:982 ocfs2_mknod+0xdc8/0x2438 fs/ocfs2/namei.c:347 ocfs2_mkdir+0x194/0x4d4 fs/ocfs2/namei.c:657 vfs_mkdir+0x27c/0x410 fs/namei.c:4311 do_mkdirat+0x248/0x574 fs/namei.c:4334 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4347 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #1 (sb_internal#5){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1725 [inline] sb_start_intwrite include/linux/fs.h:1908 [inline] ocfs2_start_trans+0x244/0x71c fs/ocfs2/journal.c:348 ocfs2_mknod+0xe58/0x2438 fs/ocfs2/namei.c:361 ocfs2_mkdir+0x194/0x4d4 fs/ocfs2/namei.c:657 vfs_mkdir+0x27c/0x410 fs/namei.c:4311 do_mkdirat+0x248/0x574 fs/namei.c:4334 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4347 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5226 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:818 [inline] ocfs2_reserve_local_alloc_bits+0x108/0x24cc fs/ocfs2/localalloc.c:636 ocfs2_reserve_clusters_with_limit+0x194/0xabc fs/ocfs2/suballoc.c:1166 ocfs2_reserve_clusters+0x3c/0x50 fs/ocfs2/suballoc.c:1227 ocfs2_init_xattr_set_ctxt+0x3fc/0x95c fs/ocfs2/xattr.c:3286 ocfs2_xattr_set+0xbe0/0x1448 fs/ocfs2/xattr.c:3634 ocfs2_xattr_trusted_set+0x4c/0x64 fs/ocfs2/xattr.c:7336 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200 __vfs_setxattr_noperm+0x110/0x578 fs/xattr.c:234 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x1a8/0x344 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x260/0x404 fs/xattr.c:665 path_setxattrat+0x370/0x41c fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __arm64_sys_lsetxattr+0xc0/0xdc fs/xattr.c:750 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 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: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(jbd2_handle); lock(&oi->ip_xattr_sem); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); *** DEADLOCK *** 3 locks held by syz.8.304/8202: #0: ffff0000ce402420 (sb_writers#29){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515 #1: ffff0000de2bb480 (&sb->s_type->i_mutex_key#37){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #1: ffff0000de2bb480 (&sb->s_type->i_mutex_key#37){+.+.}-{4:4}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:320 #2: ffff0000de2bb1b8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x4e0/0x1448 fs/ocfs2/xattr.c:3583 stack backtrace: CPU: 1 UID: 0 PID: 8202 Comm: syz.8.304 Not tainted 6.13.0-rc3-syzkaller-g06a573612678 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x154/0x1c0 kernel/locking/lockdep.c:2074 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5226 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:818 [inline] ocfs2_reserve_local_alloc_bits+0x108/0x24cc fs/ocfs2/localalloc.c:636 ocfs2_reserve_clusters_with_limit+0x194/0xabc fs/ocfs2/suballoc.c:1166 ocfs2_reserve_clusters+0x3c/0x50 fs/ocfs2/suballoc.c:1227 ocfs2_init_xattr_set_ctxt+0x3fc/0x95c fs/ocfs2/xattr.c:3286 ocfs2_xattr_set+0xbe0/0x1448 fs/ocfs2/xattr.c:3634 ocfs2_xattr_trusted_set+0x4c/0x64 fs/ocfs2/xattr.c:7336 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200 __vfs_setxattr_noperm+0x110/0x578 fs/xattr.c:234 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x1a8/0x344 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x260/0x404 fs/xattr.c:665 path_setxattrat+0x370/0x41c fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __arm64_sys_lsetxattr+0xc0/0xdc fs/xattr.c:750 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 ocfs2: Unmounting device (7,8) on (node local)