REISERFS (device loop8): checking transaction log (loop8)
REISERFS (device loop8): Using r5 hash to sort names
REISERFS (device loop8): Created .reiserfs_priv - reserved for xattr storage.
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 7716 Comm: syz.8.658 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 dump_backtrace+0x1c0/0x1ec 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+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 fs_reclaim_acquire+0xc4/0x124 mm/page_alloc.c:4765
 might_alloc include/linux/sched/mm.h:271 [inline]
 slab_pre_alloc_hook mm/slab.h:710 [inline]
 slab_alloc_node mm/slub.c:3279 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc+0x60/0x308 mm/slub.c:3383
 kmem_cache_zalloc include/linux/slab.h:689 [inline]
 alloc_buffer_head+0x2c/0x150 fs/buffer.c:2903
 alloc_page_buffers+0x364/0x824 fs/buffer.c:829
 create_empty_buffers+0x4c/0x5b8 fs/buffer.c:1543
 create_page_buffers+0x180/0x2c8 fs/buffer.c:1660
 __block_write_begin_int+0x180/0x1388 fs/buffer.c:1970
 __block_write_begin+0x7c/0xa0 fs/buffer.c:2041
 reiserfs_write_begin+0x328/0x714 fs/reiserfs/inode.c:2775
 generic_perform_write+0x234/0x4f4 mm/filemap.c:3862
 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:3989
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3ec/0x7f0 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __arm64_sys_pwrite64+0x174/0x20c fs/read_write.c:706
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 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
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 3 0(1) DIR], item_len 35, item_location 300, free_space(entry_count) 2
REISERFS error (device loop8): vs-5150 search_by_key: invalid format found in block 549. Fsck?
REISERFS (device loop8): Remounting filesystem read-only
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 3 0(1) DIR], item_len 35, item_location 300, free_space(entry_count) 2
REISERFS error (device loop8): vs-5150 search_by_key: invalid format found in block 549. Fsck?
REISERFS error (device loop8): clm-6001 reiserfs_truncate_file: grab_tail_page failed -5