EXT2-fs (loop1): warning: mounting ext3 filesystem as ext2
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 7183 Comm: syz.1.670 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __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:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline]
 read_seqbegin+0x60/0x15c include/linux/seqlock.h:893
 zone_span_seqbegin include/linux/memory_hotplug.h:132 [inline]
 page_outside_zone_boundaries mm/page_alloc.c:627 [inline]
 bad_range+0x9c/0x260 mm/page_alloc.c:654
 rmqueue mm/page_alloc.c:3887 [inline]
 get_page_from_freelist+0x1e70/0x1fc0 mm/page_alloc.c:4325
 __alloc_pages+0x1cc/0x53c mm/page_alloc.c:5614
 alloc_pages+0x434/0x6f8 mm/mempolicy.c:-1
 alloc_slab_page+0x80/0x148 mm/slub.c:1799
 allocate_slab mm/slub.c:1944 [inline]
 new_slab+0xa0/0x2f4 mm/slub.c:1997
 ___slab_alloc+0x8b4/0xec8 mm/slub.c:3154
 __slab_alloc+0x74/0xd0 mm/slub.c:3240
 slab_alloc_node mm/slub.c:3325 [inline]
 __kmem_cache_alloc_node+0x298/0x320 mm/slub.c:3398
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc+0xd8/0x178 mm/slab_common.c:949
 kmalloc include/linux/slab.h:568 [inline]
 __d_alloc+0xb4/0x684 fs/dcache.c:1791
 d_alloc fs/dcache.c:1854 [inline]
 d_alloc_parallel+0x7c/0x11ac fs/dcache.c:2647
 lookup_open fs/namei.c:3415 [inline]
 open_last_lookups fs/namei.c:3558 [inline]
 path_openat+0x6f0/0x2680 fs/namei.c:3788
 do_filp_open+0x174/0x344 fs/namei.c:3818
 do_sys_openat2+0x128/0x3d8 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __arm64_sys_openat+0x120/0x154 fs/open.c:1345
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585