====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.9.852/10552 is trying to acquire lock: ffff88802e7a06f8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_init_acl+0x30a/0x770 fs/ocfs2/acl.c:366 but task is already holding lock: ffff88805e3f40e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3a8/0x6f0 fs/ocfs2/journal.c:372 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3a8/0x6f0 fs/ocfs2/journal.c:372 ocfs2_modify_bh+0xe4/0x4c0 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1433/0x17d0 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x734/0xb30 fs/quota/dquot.c:2492 dquot_load_quota_inode+0x2d7/0x5c0 fs/quota/dquot.c:2529 ocfs2_enable_quotas+0x1c4/0x4a0 fs/ocfs2/super.c:926 ocfs2_fill_super+0x416d/0x5010 fs/ocfs2/super.c:1141 mount_bdev+0x21c/0x2c0 fs/super.c:1651 legacy_get_tree+0xea/0x180 fs/fs_context.c:662 vfs_get_tree+0x8c/0x280 fs/super.c:1772 do_new_mount+0x24a/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #3 (sb_internal#5){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1633 [inline] sb_start_intwrite include/linux/fs.h:1755 [inline] ocfs2_start_trans+0x2a9/0x6f0 fs/ocfs2/journal.c:370 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:703 [inline] ocfs2_reserve_suballoc_bits+0x7a5/0x44a0 fs/ocfs2/suballoc.c:850 ocfs2_reserve_new_metadata_blocks+0x416/0x9a0 fs/ocfs2/suballoc.c:1000 ocfs2_init_xattr_set_ctxt+0x30b/0x710 fs/ocfs2/xattr.c:3283 ocfs2_xattr_set+0xc75/0x13a0 fs/ocfs2/xattr.c:3640 ocfs2_set_acl+0x4d4/0x580 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1b2/0x2b0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:963 [inline] vfs_set_acl+0x80f/0xa70 fs/posix_acl.c:1142 do_set_acl+0xf5/0x180 fs/posix_acl.c:1287 do_setxattr fs/xattr.c:627 [inline] path_setxattr+0x362/0x590 fs/xattr.c:659 __do_sys_lsetxattr fs/xattr.c:684 [inline] __se_sys_lsetxattr fs/xattr.c:680 [inline] __x64_sys_lsetxattr+0xb8/0xd0 fs/xattr.c:680 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}: down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_reserve_suballoc_bits+0x171/0x44a0 fs/ocfs2/suballoc.c:804 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1150 [inline] ocfs2_reserve_clusters_with_limit+0x3bd/0xc20 fs/ocfs2/suballoc.c:1195 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:692 [inline] ocfs2_reserve_suballoc_bits+0x783/0x44a0 fs/ocfs2/suballoc.c:850 ocfs2_reserve_new_metadata_blocks+0x416/0x9a0 fs/ocfs2/suballoc.c:1000 ocfs2_init_xattr_set_ctxt+0x30b/0x710 fs/ocfs2/xattr.c:3283 ocfs2_xattr_set+0xc75/0x13a0 fs/ocfs2/xattr.c:3640 ocfs2_set_acl+0x4d4/0x580 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1b2/0x2b0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:963 [inline] vfs_set_acl+0x80f/0xa70 fs/posix_acl.c:1142 do_set_acl+0xf5/0x180 fs/posix_acl.c:1287 do_setxattr fs/xattr.c:627 [inline] path_setxattr+0x362/0x590 fs/xattr.c:659 __do_sys_lsetxattr fs/xattr.c:684 [inline] __se_sys_lsetxattr fs/xattr.c:680 [inline] __x64_sys_lsetxattr+0xb8/0xd0 fs/xattr.c:680 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}: down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_reserve_suballoc_bits+0x171/0x44a0 fs/ocfs2/suballoc.c:804 ocfs2_reserve_new_metadata_blocks+0x416/0x9a0 fs/ocfs2/suballoc.c:1000 ocfs2_init_xattr_set_ctxt+0x30b/0x710 fs/ocfs2/xattr.c:3283 ocfs2_xattr_set+0xc75/0x13a0 fs/ocfs2/xattr.c:3640 ocfs2_set_acl+0x4d4/0x580 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1b2/0x2b0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:963 [inline] vfs_set_acl+0x80f/0xa70 fs/posix_acl.c:1142 do_set_acl+0xf5/0x180 fs/posix_acl.c:1287 do_setxattr fs/xattr.c:627 [inline] path_setxattr+0x362/0x590 fs/xattr.c:659 __do_sys_lsetxattr fs/xattr.c:684 [inline] __se_sys_lsetxattr fs/xattr.c:680 [inline] __x64_sys_lsetxattr+0xb8/0xd0 fs/xattr.c:680 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&oi->ip_xattr_sem){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x30a/0x770 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1427/0x2310 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657 vfs_mkdir+0x2a5/0x470 fs/namei.c:4168 do_mkdirat+0x1dc/0x450 fs/namei.c:4191 __do_sys_mkdir fs/namei.c:4211 [inline] __se_sys_mkdir fs/namei.c:4209 [inline] __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4209 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &oi->ip_xattr_sem --> sb_internal#5 --> &journal->j_trans_barrier Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(&journal->j_trans_barrier); lock(sb_internal#5); lock(&journal->j_trans_barrier); rlock(&oi->ip_xattr_sem); *** DEADLOCK *** 8 locks held by syz.9.852/10552: #0: ffff88807c744418 (sb_writers#27){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412 #1: ffff88802e7a09d8 (&type->i_mutex_dir_key#18/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline] #1: ffff88802e7a09d8 (&type->i_mutex_dir_key#18/1){+.+.}-{3:3}, at: filename_create+0x20f/0x450 fs/namei.c:3937 #2: ffff88807c8aa658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #2: ffff88807c8aa658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x171/0x44a0 fs/ocfs2/suballoc.c:804 #3: ffff88807c8a9818 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #3: ffff88807c8a9818 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x171/0x44a0 fs/ocfs2/suballoc.c:804 #4: ffff88807c8ac2d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #4: ffff88807c8ac2d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0x120/0x2620 fs/ocfs2/localalloc.c:635 #5: ffff88807c744608 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_mknod+0xf33/0x2310 fs/ocfs2/namei.c:361 #6: ffff88805e3f40e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3a8/0x6f0 fs/ocfs2/journal.c:372 #7: ffff88806a55c990 (jbd2_handle#2){.+.+}-{0:0}, at: start_this_handle+0x1f3f/0x2170 fs/jbd2/transaction.c:448 stack backtrace: CPU: 0 PID: 10552 Comm: syz.9.852 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 check_noncircular+0x2fc/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x30a/0x770 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1427/0x2310 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657 vfs_mkdir+0x2a5/0x470 fs/namei.c:4168 do_mkdirat+0x1dc/0x450 fs/namei.c:4191 __do_sys_mkdir fs/namei.c:4211 [inline] __se_sys_mkdir fs/namei.c:4209 [inline] __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4209 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa4ee99e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa4ef782028 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fa4eec26090 RCX: 00007fa4ee99e159 RDX: 0000000000000000 RSI: 00000000000001ef RDI: 0000200000000040 RBP: 00007fa4eea3503b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa4eec26128 R14: 00007fa4eec26090 R15: 00007ffed7ec00f8 ocfs2: Unmounting device (7,9) on (node local) infiniband syz0: set down bond0: (slave syz_tun): Releasing backup interface