======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Not tainted ------------------------------------------------------ syz-executor616/6424 is trying to acquire lock: ffff0000de132640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] ffff0000de132640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0xfc/0x247c fs/ocfs2/localalloc.c:636 but task is already holding lock: ffff0000de133ff8 (&oi->ip_xattr_sem){++++}-{3:3}, 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){++++}-{3:3}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x2c8/0x764 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1388/0x243c fs/ocfs2/namei.c:408 ocfs2_create+0x194/0x4e0 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3930 do_filp_open+0x1bc/0x3cc fs/namei.c:3960 do_sys_openat2+0x124/0x1b8 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1441 __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+0x840/0x4288 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x384/0x848 fs/ocfs2/suballoc.c:982 ocfs2_mknod+0xdc8/0x243c fs/ocfs2/namei.c:345 ocfs2_create+0x194/0x4e0 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3930 do_filp_open+0x1bc/0x3cc fs/namei.c:3960 do_sys_openat2+0x124/0x1b8 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1441 __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){.+.+}-{3:3}: 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+0x840/0x4288 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x384/0x848 fs/ocfs2/suballoc.c:982 ocfs2_mknod+0xdc8/0x243c fs/ocfs2/namei.c:345 ocfs2_create+0x194/0x4e0 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3930 do_filp_open+0x1bc/0x3cc fs/namei.c:3960 do_sys_openat2+0x124/0x1b8 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1441 __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#2){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1716 [inline] sb_start_intwrite include/linux/fs.h:1899 [inline] ocfs2_start_trans+0x244/0x71c fs/ocfs2/journal.c:348 ocfs2_mknod+0xe58/0x243c fs/ocfs2/namei.c:359 ocfs2_create+0x194/0x4e0 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x13e4/0x2b14 fs/namei.c:3930 do_filp_open+0x1bc/0x3cc fs/namei.c:3960 do_sys_openat2+0x124/0x1b8 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1441 __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){+.+.}-{3:3}: 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+0x33f8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_reserve_local_alloc_bits+0xfc/0x247c 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+0x404/0x968 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:629 [inline] path_setxattr+0x30c/0x428 fs/xattr.c:658 __do_sys_lsetxattr fs/xattr.c:683 [inline] __se_sys_lsetxattr fs/xattr.c:679 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:679 __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-executor616/6424: #0: ffff0000d9286420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515 #1: ffff0000de1342c0 (&sb->s_type->i_mutex_key#16){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff0000de1342c0 (&sb->s_type->i_mutex_key#16){+.+.}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:320 #2: ffff0000de133ff8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x4e0/0x1448 fs/ocfs2/xattr.c:3583 stack backtrace: CPU: 0 UID: 0 PID: 6424 Comm: syz-executor616 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #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:484 (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+0x33f8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_reserve_local_alloc_bits+0xfc/0x247c 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+0x404/0x968 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:629 [inline] path_setxattr+0x30c/0x428 fs/xattr.c:658 __do_sys_lsetxattr fs/xattr.c:683 [inline] __se_sys_lsetxattr fs/xattr.c:679 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:679 __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