(syz.4.3202,19604,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0x93f628a2, computed 0x2aee8be5. Applying ECC. (syz.4.3202,19604,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0x98842a5e, computed 0xe74db1cd. Applying ECC. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.4.3202/19604 is trying to acquire lock: ffff88805dae94a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_try_remove_refcount_tree+0xb7/0x340 fs/ocfs2/refcounttree.c:932 but task is already holding lock: ffff88805dae9538 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_try_remove_refcount_tree+0xa5/0x340 fs/ocfs2/refcounttree.c:931 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+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x30a/0x770 fs/ocfs2/acl.c:366 ocfs2_mknod+0x140f/0x2300 fs/ocfs2/namei.c:410 ocfs2_create+0x196/0x430 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3496 [inline] open_last_lookups fs/namei.c:3564 [inline] path_openat+0x12a0/0x3230 fs/namei.c:3794 do_filp_open+0x1f5/0x430 fs/namei.c:3824 do_sys_openat2+0x134/0x1d0 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1447 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #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_group_extend+0x66f/0xa10 fs/ocfs2/resize.c:334 ocfs2_ioctl+0x719/0x7e0 fs/ocfs2/ioctl.c:872 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #3 (sb_internal#2){.+.+}-{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_group_extend+0x66f/0xa10 fs/ocfs2/resize.c:334 ocfs2_ioctl+0x719/0x7e0 fs/ocfs2/ioctl.c:872 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}: down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_reserve_suballoc_bits+0x16e/0x44c0 fs/ocfs2/suballoc.c:782 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1128 [inline] ocfs2_reserve_clusters_with_limit+0x3bd/0xc20 fs/ocfs2/suballoc.c:1173 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:670 [inline] ocfs2_reserve_suballoc_bits+0x78b/0x44c0 fs/ocfs2/suballoc.c:828 ocfs2_reserve_new_metadata_blocks+0x416/0x9a0 fs/ocfs2/suballoc.c:978 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2839 [inline] ocfs2_extend_dir+0xcca/0x48b0 fs/ocfs2/dir.c:3201 ocfs2_prepare_dir_for_insert+0x315b/0x56b0 fs/ocfs2/dir.c:4322 ocfs2_mknod+0x81b/0x2300 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4121 do_mkdirat+0x1dc/0x450 fs/namei.c:4144 __do_sys_mkdirat fs/namei.c:4159 [inline] __se_sys_mkdirat fs/namei.c:4157 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 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+0x16e/0x44c0 fs/ocfs2/suballoc.c:782 ocfs2_reserve_new_metadata_blocks+0x416/0x9a0 fs/ocfs2/suballoc.c:978 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2839 [inline] ocfs2_extend_dir+0xcca/0x48b0 fs/ocfs2/dir.c:3201 ocfs2_prepare_dir_for_insert+0x315b/0x56b0 fs/ocfs2/dir.c:4322 ocfs2_mknod+0x81b/0x2300 fs/ocfs2/namei.c:294 ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4121 do_mkdirat+0x1dc/0x450 fs/namei.c:4144 __do_sys_mkdirat fs/namei.c:4159 [inline] __se_sys_mkdirat fs/namei.c:4157 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{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+0x2df1/0x7d40 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 ocfs2_try_remove_refcount_tree+0xb7/0x340 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x61b/0x13e0 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x4e1/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1b2/0x2b0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:956 [inline] vfs_set_acl+0x803/0xa60 fs/posix_acl.c:1135 do_setxattr fs/xattr.c:627 [inline] __do_sys_fsetxattr fs/xattr.c:711 [inline] __se_sys_fsetxattr+0x4ad/0x510 fs/xattr.c:687 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &ocfs2_file_ip_alloc_sem_key --> &journal->j_trans_barrier --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(&journal->j_trans_barrier); lock(&oi->ip_xattr_sem); lock(&ocfs2_file_ip_alloc_sem_key); *** DEADLOCK *** 3 locks held by syz.4.3202/19604: #0: ffff88805a32e418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write_file+0x63/0x200 fs/namespace.c:456 #1: ffff88805dae9818 (&type->i_mutex_dir_key#26){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff88805dae9818 (&type->i_mutex_dir_key#26){+.+.}-{3:3}, at: vfs_set_acl+0x37a/0xa60 fs/posix_acl.c:1116 #2: ffff88805dae9538 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_try_remove_refcount_tree+0xa5/0x340 fs/ocfs2/refcounttree.c:931 stack backtrace: CPU: 0 PID: 19604 Comm: syz.4.3202 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 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+0x2df1/0x7d40 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 ocfs2_try_remove_refcount_tree+0xb7/0x340 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x61b/0x13e0 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x4e1/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1b2/0x2b0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:956 [inline] vfs_set_acl+0x803/0xa60 fs/posix_acl.c:1135 do_setxattr fs/xattr.c:627 [inline] __do_sys_fsetxattr fs/xattr.c:711 [inline] __se_sys_fsetxattr+0x4ad/0x510 fs/xattr.c:687 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2ed219aeb9 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:00007f2ed2fe8028 EFLAGS: 00000246 ORIG_RAX: 00000000000000be RAX: ffffffffffffffda RBX: 00007f2ed2415fa0 RCX: 00007f2ed219aeb9 RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000004 RBP: 00007f2ed2208c1f R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2ed2416038 R14: 00007f2ed2415fa0 R15: 00007fffe422f5c8