BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 8305 Comm: syz.3.889 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
 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
 down_read+0xc0/0x390 kernel/locking/rwsem.c:1498
 kernfs_find_and_get_ns+0x30/0x120 fs/kernfs/dir.c:884
 kernfs_find_and_get include/linux/kernfs.h:553 [inline]
 sysfs_merge_group+0xc8/0x29c fs/sysfs/group.c:336
 dpm_sysfs_add+0xc8/0x26c drivers/base/power/sysfs.c:707
 device_add+0x6b8/0xf94 drivers/base/core.c:3369
 device_create_groups_vargs+0x1d4/0x26c drivers/base/core.c:4096
 device_create+0xe8/0x134 drivers/base/core.c:4138
 bdi_register_va+0x13c/0x7a4 mm/backing-dev.c:884
 super_setup_bdi_name+0xec/0x1f0 fs/super.c:1589
 fuse_bdi_init fs/fuse/inode.c:1325 [inline]
 fuse_fill_super_common+0x528/0xddc fs/fuse/inode.c:1602
 fuse_fill_super+0x17c/0x1e8 fs/fuse/inode.c:1678
 get_tree_bdev+0x358/0x544 fs/super.c:1325
 fuse_get_tree+0x1e0/0x434 fs/fuse/inode.c:1730
 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