(syz.4.88,7114,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xc9ee627, computed 0x4d558a87. Applying ECC. ====================================================== WARNING: possible circular locking dependency detected 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 Not tainted ------------------------------------------------------ syz.4.88/7114 is trying to acquire lock: ffff00010798bf60 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:932 but task is already holding lock: ffff00010798bff8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa8/0x2d8 fs/ocfs2/refcounttree.c:931 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537 ocfs2_xattr_get+0xe8/0x220 fs/ocfs2/xattr.c:1338 ocfs2_xattr_security_get+0x40/0x54 fs/ocfs2/xattr.c:7231 __vfs_getxattr+0x394/0x3c0 fs/xattr.c:423 smk_fetch+0xc4/0x150 security/smack/smack_lsm.c:289 smack_d_instantiate+0x53c/0x7a4 security/smack/smack_lsm.c:3606 security_d_instantiate+0x100/0x204 security/security.c:4109 d_instantiate+0x5c/0x9c fs/dcache.c:1961 ocfs2_mknod+0x151c/0x1cf0 fs/ocfs2/namei.c:453 ocfs2_create+0x190/0x474 fs/ocfs2/namei.c:676 vfs_create+0x21c/0x368 fs/namei.c:3405 do_mknodat+0x39c/0x4a8 fs/namei.c:4285 __do_sys_mknodat fs/namei.c:4313 [inline] __se_sys_mknodat fs/namei.c:4310 [inline] __arm64_sys_mknodat+0xac/0xc8 fs/namei.c:4310 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #3 (jbd2_handle){++++}-{0:0}: start_this_handle+0xe74/0x10dc fs/jbd2/transaction.c:444 jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:501 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:540 ocfs2_start_trans+0x368/0x6b0 fs/ocfs2/journal.c:374 ocfs2_setattr+0xa04/0x17a0 fs/ocfs2/file.c:1263 notify_change+0x9a4/0xc50 fs/attr.c:552 chmod_common+0x1f8/0x370 fs/open.c:650 do_fchmodat+0x114/0x224 fs/open.c:697 __do_sys_fchmodat fs/open.c:716 [inline] __se_sys_fchmodat fs/open.c:713 [inline] __arm64_sys_fchmodat+0x80/0x98 fs/open.c:713 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x35c/0x6b0 fs/ocfs2/journal.c:372 ocfs2_setattr+0xa04/0x17a0 fs/ocfs2/file.c:1263 notify_change+0x9a4/0xc50 fs/attr.c:552 chmod_common+0x1f8/0x370 fs/open.c:650 do_fchmodat+0x114/0x224 fs/open.c:697 __do_sys_fchmodat fs/open.c:716 [inline] __se_sys_fchmodat fs/open.c:713 [inline] __arm64_sys_fchmodat+0x80/0x98 fs/open.c:713 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #1 (sb_internal#4){.+.+}-{0:0}: 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.h:1798 [inline] sb_start_intwrite include/linux/fs.h:1981 [inline] ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_write_begin_inline fs/ocfs2/aops.c:1459 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline] ocfs2_write_begin_nolock+0x8e4/0x3864 fs/ocfs2/aops.c:1649 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1884 generic_perform_write+0x244/0x7bc mm/filemap.c:4175 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4292 ocfs2_file_write_iter+0x1328/0x1b84 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #0 (&oi->ip_alloc_sem){++++}-{4:4}: 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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x460/0xe9c fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x574/0x628 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x190/0x25c fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_remove_acl+0x408/0x664 fs/posix_acl.c:1241 ovl_do_remove_acl fs/overlayfs/overlayfs.h:355 [inline] ovl_workdir_create+0x43c/0x6f4 fs/overlayfs/super.c:354 ovl_make_workdir fs/overlayfs/super.c:669 [inline] ovl_get_workdir+0x2bc/0x1280 fs/overlayfs/super.c:827 ovl_fill_super+0xff4/0x2c38 fs/overlayfs/super.c:1406 vfs_get_super fs/super.c:1325 [inline] get_tree_nodev+0xb4/0x144 fs/super.c:1344 ovl_get_tree+0x28/0x38 fs/overlayfs/params.c:699 vfs_get_tree+0x90/0x28c fs/super.c:1815 do_new_mount+0x278/0x7f4 fs/namespace.c:3805 path_mount+0x5b4/0xde0 fs/namespace.c:4120 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount fs/namespace.c:4321 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4321 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 other info that might help us debug this: Chain exists of: &oi->ip_alloc_sem --> 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(&oi->ip_alloc_sem); *** DEADLOCK *** 4 locks held by syz.4.88/7114: #0: ffff0000d5ce20e0 (&type->s_umount_key#69/1){+.+.}-{4:4}, at: alloc_super+0x1a0/0x80c fs/super.c:345 #1: ffff0000dbbdc428 (sb_writers#17){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #2: ffff00010798c2c0 (&sb->s_type->i_mutex_key#27){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #2: ffff00010798c2c0 (&sb->s_type->i_mutex_key#27){+.+.}-{4:4}, at: vfs_remove_acl+0xe0/0x664 fs/posix_acl.c:1222 #3: ffff00010798bff8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa8/0x2d8 fs/ocfs2/refcounttree.c:931 stack backtrace: CPU: 1 UID: 0 PID: 7114 Comm: syz.4.88 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2043 check_noncircular+0x154/0x174 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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x460/0xe9c fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x574/0x628 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x190/0x25c fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_remove_acl+0x408/0x664 fs/posix_acl.c:1241 ovl_do_remove_acl fs/overlayfs/overlayfs.h:355 [inline] ovl_workdir_create+0x43c/0x6f4 fs/overlayfs/super.c:354 ovl_make_workdir fs/overlayfs/super.c:669 [inline] ovl_get_workdir+0x2bc/0x1280 fs/overlayfs/super.c:827 ovl_fill_super+0xff4/0x2c38 fs/overlayfs/super.c:1406 vfs_get_super fs/super.c:1325 [inline] get_tree_nodev+0xb4/0x144 fs/super.c:1344 ovl_get_tree+0x28/0x38 fs/overlayfs/params.c:699 vfs_get_tree+0x90/0x28c fs/super.c:1815 do_new_mount+0x278/0x7f4 fs/namespace.c:3805 path_mount+0x5b4/0xde0 fs/namespace.c:4120 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount fs/namespace.c:4321 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4321 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: upper fs missing required features.