erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 8807 Comm: syz.3.1355 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
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb0 kernel/locking/spinlock.c:162
 __debug_check_no_obj_freed lib/debugobjects.c:968 [inline]
 debug_check_no_obj_freed+0xa0/0x454 lib/debugobjects.c:1009
 free_pages_prepare mm/page_alloc.c:1493 [inline]
 free_pcp_prepare mm/page_alloc.c:1537 [inline]
 free_unref_page_prepare+0x740/0xb24 mm/page_alloc.c:3414
 free_unref_page+0x7c/0x3a0 mm/page_alloc.c:3509
 __folio_put_small mm/swap.c:97 [inline]
 __folio_put+0xd0/0x128 mm/swap.c:120
 folio_put include/linux/mm.h:1182 [inline]
 put_page include/linux/mm.h:1234 [inline]
 erofs_release_pages+0x138/0x244 fs/erofs/utils.c:28
 z_erofs_read_folio+0x334/0x5cc fs/erofs/zdata.c:1699
 filemap_read_folio+0x134/0x384 mm/filemap.c:2490
 filemap_fault+0x990/0xe98 mm/filemap.c:3340
 __do_fault+0x11c/0x3d8 mm/memory.c:4278
 do_cow_fault mm/memory.c:4659 [inline]
 do_fault mm/memory.c:4760 [inline]
 handle_pte_fault mm/memory.c:5029 [inline]
 __handle_mm_fault mm/memory.c:5171 [inline]
 handle_mm_fault+0x18d8/0x3018 mm/memory.c:5292
 __do_page_fault arch/arm64/mm/fault.c:499 [inline]
 do_page_fault+0x4e4/0x99c arch/arm64/mm/fault.c:583
 do_translation_fault+0x94/0xc8 arch/arm64/mm/fault.c:667
 do_mem_abort+0x70/0x198 arch/arm64/mm/fault.c:804
 el0_da+0x70/0x144 arch/arm64/kernel/entry-common.c:515
 el0t_64_sync_handler+0x90/0xf0 arch/arm64/kernel/entry-common.c:658
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]
erofs: (device loop3): z_erofs_lz4_decompress_mem: failed to decompress 4876 in[4096, 0] out[9000]