======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0 Not tainted ------------------------------------------------------ syz.0.15/6596 is trying to acquire lock: ffff888070946d80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] ffff888070946d80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x18e/0x4e70 fs/ocfs2/suballoc.c:786 but task is already holding lock: ffff888070bd06f8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x62f/0x1930 fs/ocfs2/xattr.c:3584 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #5 (&oi->ip_xattr_sem){++++}-{3:3}: down_read+0xad/0xa40 kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x393/0x930 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1c9f/0x2c00 fs/ocfs2/namei.c:408 ocfs2_create+0x1a7/0x470 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x1bff/0x3580 fs/namei.c:3930 do_filp_open+0x231/0x490 fs/namei.c:3960 do_sys_openat2+0x13a/0x1d0 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] __x64_sys_openat+0x243/0x290 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e -> #4 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1eb3/0x2110 fs/jbd2/transaction.c:448 jbd2__journal_start+0x302/0x620 fs/jbd2/transaction.c:505 jbd2_journal_start+0x25/0x30 fs/jbd2/transaction.c:544 ocfs2_start_trans+0x3c5/0x6f0 fs/ocfs2/journal.c:352 ocfs2_mknod+0x154e/0x2c00 fs/ocfs2/namei.c:359 ocfs2_create+0x1a7/0x470 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x1bff/0x3580 fs/namei.c:3930 do_filp_open+0x231/0x490 fs/namei.c:3960 do_sys_openat2+0x13a/0x1d0 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] __x64_sys_openat+0x243/0x290 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e -> #3 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0xad/0xa40 kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x3ba/0x6f0 fs/ocfs2/journal.c:350 ocfs2_mknod+0x154e/0x2c00 fs/ocfs2/namei.c:359 ocfs2_create+0x1a7/0x470 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x1bff/0x3580 fs/namei.c:3930 do_filp_open+0x231/0x490 fs/namei.c:3960 do_sys_openat2+0x13a/0x1d0 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] __x64_sys_openat+0x243/0x290 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e -> #2 (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+0x2b5/0x6f0 fs/ocfs2/journal.c:348 ocfs2_mknod+0x154e/0x2c00 fs/ocfs2/namei.c:359 ocfs2_create+0x1a7/0x470 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x1bff/0x3580 fs/namei.c:3930 do_filp_open+0x231/0x490 fs/namei.c:3960 do_sys_openat2+0x13a/0x1d0 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] __x64_sys_openat+0x243/0x290 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}: down_write+0x95/0x210 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_reserve_local_alloc_bits+0x12e/0x2840 fs/ocfs2/localalloc.c:636 ocfs2_reserve_clusters_with_limit+0x1b4/0xb50 fs/ocfs2/suballoc.c:1166 ocfs2_mknod+0x14cb/0x2c00 fs/ocfs2/namei.c:352 ocfs2_create+0x1a7/0x470 fs/ocfs2/namei.c:672 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x1bff/0x3580 fs/namei.c:3930 do_filp_open+0x231/0x490 fs/namei.c:3960 do_sys_openat2+0x13a/0x1d0 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] __x64_sys_openat+0x243/0x290 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{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+0x2f5e/0x8070 kernel/locking/lockdep.c:5202 lock_acquire+0x1e9/0x540 kernel/locking/lockdep.c:5825 down_write+0x95/0x210 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_reserve_suballoc_bits+0x18e/0x4e70 fs/ocfs2/suballoc.c:786 ocfs2_reserve_new_metadata_blocks+0x418/0x9c0 fs/ocfs2/suballoc.c:982 ocfs2_init_xattr_set_ctxt+0x3a2/0x8f0 fs/ocfs2/xattr.c:3278 ocfs2_xattr_set+0xf4a/0x1930 fs/ocfs2/xattr.c:3635 __vfs_setxattr+0x464/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12a/0x660 fs/xattr.c:234 vfs_setxattr+0x21d/0x420 fs/xattr.c:321 do_setxattr fs/xattr.c:629 [inline] path_setxattr+0x37a/0x4c0 fs/xattr.c:658 __do_sys_lsetxattr fs/xattr.c:683 [inline] __se_sys_lsetxattr fs/xattr.c:679 [inline] __x64_sys_lsetxattr+0xb4/0xd0 fs/xattr.c:679 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3 --> 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]#3); *** DEADLOCK *** 3 locks held by syz.0.15/6596: #0: ffff888068f36420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x90 fs/namespace.c:515 #1: ffff888070bd09c0 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff888070bd09c0 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: vfs_setxattr+0x1dd/0x420 fs/xattr.c:320 #2: ffff888070bd06f8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x62f/0x1930 fs/ocfs2/xattr.c:3584 stack backtrace: CPU: 0 UID: 0 PID: 6596 Comm: syz.0.15 Not tainted 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x23d/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x375/0x4a0 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+0x2f5e/0x8070 kernel/locking/lockdep.c:5202 lock_acquire+0x1e9/0x540 kernel/locking/lockdep.c:5825 down_write+0x95/0x210 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_reserve_suballoc_bits+0x18e/0x4e70 fs/ocfs2/suballoc.c:786 ocfs2_reserve_new_metadata_blocks+0x418/0x9c0 fs/ocfs2/suballoc.c:982 ocfs2_init_xattr_set_ctxt+0x3a2/0x8f0 fs/ocfs2/xattr.c:3278 ocfs2_xattr_set+0xf4a/0x1930 fs/ocfs2/xattr.c:3635 __vfs_setxattr+0x464/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12a/0x660 fs/xattr.c:234 vfs_setxattr+0x21d/0x420 fs/xattr.c:321 do_setxattr fs/xattr.c:629 [inline] path_setxattr+0x37a/0x4c0 fs/xattr.c:658 __do_sys_lsetxattr fs/xattr.c:683 [inline] __se_sys_lsetxattr fs/xattr.c:679 [inline] __x64_sys_lsetxattr+0xb4/0xd0 fs/xattr.c:679 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fb252d7e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb253b8d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007fb252f35f80 RCX: 00007fb252d7e719 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000280 RBP: 00007fb252df132e R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb252f35f80 R15: 00007ffd7361daf8