(syz.2.5202,28933,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.2.5202/28933 is trying to acquire lock: ffff8880217ee600 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ffff8880217ee600 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ffff8880217ee600 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x2057/0x41a0 fs/ocfs2/aops.c:1648 but task is already holding lock: ffff888043609458 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x1a2/0x320 fs/ocfs2/aops.c:1881 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&oi->ip_alloc_sem){++++}-{4:4}: down_write+0x96/0x200 kernel/locking/rwsem.c:1625 ocfs2_try_remove_refcount_tree+0xb6/0x340 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x61a/0x13e0 fs/ocfs2/xattr.c:3700 ocfs2_set_acl+0x701/0x7b0 fs/ocfs2/acl.c:255 ocfs2_iop_set_acl+0x1b1/0x2b0 fs/ocfs2/acl.c:287 set_posix_acl fs/posix_acl.c:955 [inline] vfs_remove_acl+0x542/0x830 fs/posix_acl.c:1242 removexattr fs/xattr.c:1027 [inline] filename_removexattr fs/xattr.c:1056 [inline] path_removexattrat+0x51a/0x750 fs/xattr.c:1089 __do_sys_removexattr fs/xattr.c:1101 [inline] __se_sys_removexattr fs/xattr.c:1098 [inline] __x64_sys_removexattr+0x62/0x70 fs/xattr.c:1098 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x47/0x2e0 kernel/locking/rwsem.c:1568 ocfs2_init_acl+0x2fd/0x7e0 fs/ocfs2/acl.c:367 ocfs2_mknod+0x1679/0x2260 fs/ocfs2/namei.c:414 ocfs2_mkdir+0x181/0x460 fs/ocfs2/namei.c:660 vfs_mkdir+0x413/0x630 fs/namei.c:5255 filename_mkdirat+0x285/0x510 fs/namei.c:5288 __do_sys_mkdirat fs/namei.c:5309 [inline] __se_sys_mkdirat+0x35/0x150 fs/namei.c:5306 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x47/0x2e0 kernel/locking/rwsem.c:1568 ocfs2_start_trans+0x3ab/0x700 fs/ocfs2/journal.c:369 ocfs2_modify_bh+0xe3/0x4d0 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1454/0x1810 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x791/0xbd0 fs/quota/dquot.c:2462 dquot_load_quota_inode+0x2e1/0x5d0 fs/quota/dquot.c:2499 ocfs2_enable_quotas+0x1c8/0x4a0 fs/ocfs2/super.c:930 ocfs2_fill_super+0x5337/0x6930 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694 vfs_get_tree+0x92/0x2a0 fs/super.c:1754 fc_mount fs/namespace.c:1193 [inline] do_new_mount_fc fs/namespace.c:3764 [inline] do_new_mount+0x341/0xd30 fs/namespace.c:3840 do_mount fs/namespace.c:4173 [inline] __do_sys_mount fs/namespace.c:4372 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4349 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (sb_internal#2){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs/super.h:19 [inline] sb_start_intwrite include/linux/fs/super.h:177 [inline] ocfs2_start_trans+0x2ac/0x700 fs/ocfs2/journal.c:367 ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ocfs2_write_begin_nolock+0x2057/0x41a0 fs/ocfs2/aops.c:1648 ocfs2_write_begin+0x1c5/0x320 fs/ocfs2/aops.c:1883 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4325 ocfs2_file_write_iter+0x1663/0x1e70 fs/ocfs2/file.c:2476 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(&oi->ip_xattr_sem); lock(&oi->ip_alloc_sem); rlock(sb_internal#2); *** DEADLOCK *** 4 locks held by syz.2.5202/28933: #0: ffff88807aca60f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x246/0x320 fs/file.c:1261 #1: ffff8880217ee410 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2718 [inline] #1: ffff8880217ee410 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x227/0xb90 fs/read_write.c:684 #2: ffff8880436097a0 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #2: ffff8880436097a0 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x429/0x1e70 fs/ocfs2/file.c:2406 #3: ffff888043609458 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x1a2/0x320 fs/ocfs2/aops.c:1881 stack backtrace: CPU: 1 UID: 0 PID: 28933 Comm: syz.2.5202 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs/super.h:19 [inline] sb_start_intwrite include/linux/fs/super.h:177 [inline] ocfs2_start_trans+0x2ac/0x700 fs/ocfs2/journal.c:367 ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ocfs2_write_begin_nolock+0x2057/0x41a0 fs/ocfs2/aops.c:1648 ocfs2_write_begin+0x1c5/0x320 fs/ocfs2/aops.c:1883 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4325 ocfs2_file_write_iter+0x1663/0x1e70 fs/ocfs2/file.c:2476 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f985959c799 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:00007f985a43e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f9859815fa0 RCX: 00007f985959c799 RDX: 000000000000000b RSI: 00002000000000c0 RDI: 0000000000000009 RBP: 00007f9859632c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9859816038 R14: 00007f9859815fa0 R15: 00007ffeb52903d8