loop4: detected capacity change from 0 to 32768
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 9363 Comm: syz.4.1712 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
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
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b30/0x651c kernel/locking/lockdep.c:5012
 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
 do_write_seqcount_begin_nested include/linux/seqlock.h:519 [inline]
 do_write_seqcount_begin include/linux/seqlock.h:545 [inline]
 vtime_task_switch_generic+0x1f0/0x9d4 kernel/sched/cputime.c:774
 vtime_task_switch include/linux/vtime.h:95 [inline]
 finish_task_switch+0x394/0x6b0 kernel/sched/core.c:4898
 context_switch kernel/sched/core.c:5033 [inline]
 __schedule+0xe04/0x1c0c kernel/sched/core.c:6376
 preempt_schedule_common+0x138/0x218 kernel/sched/core.c:6552
 preempt_schedule+0x64/0x84 kernel/sched/core.c:6577
 __slab_alloc+0xa0/0xc0 mm/slub.c:3097
 slab_alloc_node mm/slub.c:3186 [inline]
 __kmalloc_node+0x310/0x520 mm/slub.c:4451
 kmalloc_array_node include/linux/slab.h:697 [inline]
 kcalloc_node include/linux/slab.h:702 [inline]
 memcg_alloc_page_obj_cgroups+0x80/0x174 mm/memcontrol.c:2839
 memcg_slab_post_alloc_hook mm/slab.h:313 [inline]
 slab_post_alloc_hook+0xc0/0x408 mm/slab.h:526
 slab_alloc_node mm/slub.c:3220 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0x1e0/0x3e4 mm/slub.c:3233
 alloc_inode fs/inode.c:263 [inline]
 new_inode_pseudo+0x10c/0x1fc fs/inode.c:1001
 new_inode+0x38/0x174 fs/inode.c:1030
 debugfs_get_inode fs/debugfs/inode.c:72 [inline]
 debugfs_create_dir+0xec/0x3f4 fs/debugfs/inode.c:570
 ocfs2_fill_super+0x22e4/0x4074 fs/ocfs2/super.c:1073
 mount_bdev+0x264/0x358 fs/super.c:1400
 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187
 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:3014
 path_mount+0x5b4/0x1000 fs/namespace.c:3344
 do_mount fs/namespace.c:3357 [inline]
 __do_sys_mount fs/namespace.c:3565 [inline]
 __se_sys_mount fs/namespace.c:3542 [inline]
 __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3542
 __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
(syz.4.1712,9363,1):ocfs2_read_blocks_sync:112 ERROR: status = -12
(syz.4.1712,9363,1):ocfs2_read_locked_inode:521 ERROR: status = -12
(syz.4.1712,9363,1):_ocfs2_get_system_file_inode:144 ERROR: status = -12
(syz.4.1712,9363,1):ocfs2_init_local_system_inodes:493 ERROR: status=-22, sysfile=10, slot=0
(syz.4.1712,9363,1):ocfs2_init_local_system_inodes:502 ERROR: status = -22
(syz.4.1712,9363,1):ocfs2_mount_volume:1818 ERROR: status = -22
(syz.4.1712,9363,1):ocfs2_fill_super:1177 ERROR: status = -22
netlink: 32 bytes leftover after parsing attributes in process `syz.4.1712'.