loop7: detected capacity change from 0 to 131072
F2FS-fs (loop7): Found nat_bits in checkpoint
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 7422 Comm: syz.7.529 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Call trace:
 dump_backtrace+0x1c4/0x1f0 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+0xf4/0x15c 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+0x1810/0x6610 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5662
 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline]
 read_seqbegin+0x60/0x158 include/linux/seqlock.h:893
 zone_span_seqbegin include/linux/memory_hotplug.h:132 [inline]
 page_outside_zone_boundaries mm/page_alloc.c:654 [inline]
 bad_range+0xa4/0x250 mm/page_alloc.c:681
 rmqueue mm/page_alloc.c:3917 [inline]
 get_page_from_freelist+0x1ffc/0x2174 mm/page_alloc.c:4355
 __alloc_pages+0x1d0/0x544 mm/page_alloc.c:5658
 alloc_pages+0x434/0x6fc mm/mempolicy.c:-1
 folio_alloc+0x28/0x6c mm/mempolicy.c:2292
 filemap_alloc_folio+0xc4/0x42c mm/filemap.c:999
 __filemap_get_folio+0x64c/0xaa8 mm/filemap.c:1993
 pagecache_get_page+0x3c/0x16c mm/folio-compat.c:110
 find_or_create_page include/linux/pagemap.h:648 [inline]
 grab_cache_page include/linux/pagemap.h:780 [inline]
 f2fs_grab_cache_page+0x198/0x3a4 fs/f2fs/f2fs.h:2741
 __get_meta_page+0x14c/0x524 fs/f2fs/checkpoint.c:80
 f2fs_get_tmp_page+0x2c/0x3c fs/f2fs/checkpoint.c:137
 find_fsync_dnodes fs/f2fs/recovery.c:384 [inline]
 f2fs_recover_fsync_data+0x4b8/0x6454 fs/f2fs/recovery.c:862
 f2fs_fill_super+0x4af8/0x57b8 fs/f2fs/super.c:4508
 mount_bdev+0x264/0x35c fs/super.c:1443
 f2fs_mount+0x44/0x58 fs/f2fs/super.c:4679
 legacy_get_tree+0xd8/0x174 fs/fs_context.c:632
 vfs_get_tree+0x90/0x278 fs/super.c:1573
 do_new_mount+0x228/0x804 fs/namespace.c:3078
 path_mount+0x5ac/0xe6c fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x4a0/0x5a0 fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 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
F2FS-fs (loop7): Mounted with checkpoint version = 48b305e5