ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 5.15.185-syzkaller #0 Not tainted ------------------------------------------------------ syz.3.65/4341 is trying to acquire lock: ffff0000e8d2a2e0 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:932 but task is already holding lock: ffff0000e8d2a378 (&oi->ip_xattr_sem){++++}-{3:3}, 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){++++}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 ocfs2_init_acl+0x260/0x604 fs/ocfs2/acl.c:365 ocfs2_mknod+0x114c/0x1e88 fs/ocfs2/namei.c:410 ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x1144/0x26e4 fs/namei.c:3739 do_filp_open+0x164/0x330 fs/namei.c:3769 do_sys_openat2+0x128/0x3d8 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #3 (jbd2_handle){++++}-{0:0}: start_this_handle+0xef4/0x11a4 fs/jbd2/transaction.c:464 jbd2__journal_start+0x28c/0x744 fs/jbd2/transaction.c:521 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:560 ocfs2_start_trans+0x43c/0x794 fs/ocfs2/journal.c:376 ocfs2_mknod+0xc60/0x1e88 fs/ocfs2/namei.c:361 ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x1144/0x26e4 fs/namei.c:3739 do_filp_open+0x164/0x330 fs/namei.c:3769 do_sys_openat2+0x128/0x3d8 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 ocfs2_start_trans+0x430/0x794 fs/ocfs2/journal.c:374 ocfs2_mknod+0xc60/0x1e88 fs/ocfs2/namei.c:361 ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x1144/0x26e4 fs/namei.c:3739 do_filp_open+0x164/0x330 fs/namei.c:3769 do_sys_openat2+0x128/0x3d8 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (sb_internal#2){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1811 [inline] sb_start_intwrite include/linux/fs.h:1928 [inline] ocfs2_start_trans+0x2c4/0x794 fs/ocfs2/journal.c:372 ocfs2_write_begin_inline fs/ocfs2/aops.c:1482 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1585 [inline] ocfs2_write_begin_nolock+0x8c8/0x3764 fs/ocfs2/aops.c:1671 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1905 generic_perform_write+0x204/0x480 mm/filemap.c:3785 __generic_file_write_iter+0x23c/0x454 mm/filemap.c:3912 ocfs2_file_write_iter+0x12e0/0x1b84 fs/ocfs2/file.c:2472 do_iter_readv_writev+0x3a0/0x4f8 fs/read_write.c:-1 do_iter_write+0x1c4/0x670 fs/read_write.c:855 vfs_writev fs/read_write.c:928 [inline] do_pwritev+0x1c8/0x2fc fs/read_write.c:1025 __do_sys_pwritev2 fs/read_write.c:1084 [inline] __se_sys_pwritev2 fs/read_write.c:1075 [inline] __arm64_sys_pwritev2+0xd4/0x108 fs/read_write.c:1075 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&oi->ip_alloc_sem){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x458/0xea8 fs/ocfs2/xattr.c:3673 ocfs2_set_acl+0x3ec/0x4a0 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x174/0x240 fs/ocfs2/acl.c:285 set_posix_acl fs/posix_acl.c:947 [inline] posix_acl_xattr_set+0x2cc/0x378 fs/posix_acl.c:966 __vfs_removexattr+0x370/0x38c fs/xattr.c:470 __vfs_removexattr_locked+0x1d0/0x208 fs/xattr.c:505 vfs_removexattr+0x80/0x190 fs/xattr.c:527 ovl_do_removexattr fs/overlayfs/overlayfs.h:231 [inline] ovl_workdir_create+0x2d8/0x578 fs/overlayfs/super.c:818 ovl_make_workdir fs/overlayfs/super.c:1376 [inline] ovl_get_workdir+0x2fc/0xe8c fs/overlayfs/super.c:1526 ovl_fill_super+0x139c/0x2294 fs/overlayfs/super.c:2082 mount_nodev+0x68/0x104 fs/super.c:1446 ovl_mount+0x3c/0x50 fs/overlayfs/super.c:2173 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 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 *** 5 locks held by syz.3.65/4341: #0: ffff0000d74060e0 (&type->s_umount_key#65/1){+.+.}-{3:3}, at: alloc_super+0x1a8/0x824 fs/super.c:229 #1: ffff0000d6a9c460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #2: ffff0000e8d29808 (&sb->s_type->i_mutex_key#26/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #2: ffff0000e8d29808 (&sb->s_type->i_mutex_key#26/1){+.+.}-{3:3}, at: ovl_workdir_create+0x13c/0x578 fs/overlayfs/super.c:768 #3: ffff0000e8d2a648 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #3: ffff0000e8d2a648 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: vfs_removexattr+0x6c/0x190 fs/xattr.c:526 #4: ffff0000e8d2a378 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_try_remove_refcount_tree+0xa8/0x2d8 fs/ocfs2/refcounttree.c:931 stack backtrace: CPU: 1 PID: 4341 Comm: syz.3.65 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011 check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 ocfs2_try_remove_refcount_tree+0xb4/0x2d8 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x458/0xea8 fs/ocfs2/xattr.c:3673 ocfs2_set_acl+0x3ec/0x4a0 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x174/0x240 fs/ocfs2/acl.c:285 set_posix_acl fs/posix_acl.c:947 [inline] posix_acl_xattr_set+0x2cc/0x378 fs/posix_acl.c:966 __vfs_removexattr+0x370/0x38c fs/xattr.c:470 __vfs_removexattr_locked+0x1d0/0x208 fs/xattr.c:505 vfs_removexattr+0x80/0x190 fs/xattr.c:527 ovl_do_removexattr fs/overlayfs/overlayfs.h:231 [inline] ovl_workdir_create+0x2d8/0x578 fs/overlayfs/super.c:818 ovl_make_workdir fs/overlayfs/super.c:1376 [inline] ovl_get_workdir+0x2fc/0xe8c fs/overlayfs/super.c:1526 ovl_fill_super+0x139c/0x2294 fs/overlayfs/super.c:2082 mount_nodev+0x68/0x104 fs/super.c:1446 ovl_mount+0x3c/0x50 fs/overlayfs/super.c:2173 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: upper fs missing required features.