BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 8921 Comm: syz.7.1024 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
dump_backtrace(regs = 0000000000000000 tsk = 0000000000000000)
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:3844 [inline]
 validate_chain kernel/locking/lockdep.c:3865 [inline]
 __lock_acquire+0x2618/0x7280 kernel/locking/lockdep.c:5171
 lock_acquire+0x210/0x63c kernel/locking/lockdep.c:5790
 __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 zswap_frontswap_store+0x56c/0x11f4 mm/zswap.c:1205
 __frontswap_store+0x260/0x410 mm/frontswap.c:186
 frontswap_store include/linux/frontswap.h:66 [inline]
 swap_writepage+0x110/0x198 mm/page_io.c:200
 pageout mm/vmscan.c:1287 [inline]
 shrink_folio_list+0x2520/0x4528 mm/vmscan.c:1950
 evict_folios+0x338c/0x4850 mm/vmscan.c:5053
 lru_gen_shrink_lruvec mm/vmscan.c:5236 [inline]
 shrink_lruvec+0x9fc/0x3874 mm/vmscan.c:5931
 shrink_node_memcgs mm/vmscan.c:6152 [inline]
 shrink_node+0x4c0/0x20bc mm/vmscan.c:6183
 shrink_zones mm/vmscan.c:6424 [inline]
 do_try_to_free_pages+0x55c/0x1470 mm/vmscan.c:6486
 try_to_free_mem_cgroup_pages+0x2f4/0xa8c mm/vmscan.c:6801
 mem_cgroup_resize_max+0x250/0x2e4 mm/memcontrol.c:3506
 mem_cgroup_write+0x1f4/0x224 mm/memcontrol.c:-1
 cgroup_file_write+0x258/0x584 kernel/cgroup/cgroup.c:4101
 kernfs_fop_write_iter+0x390/0x4b4 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __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+0x58/0x12c 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
kcov: kcov_task_exit: t = ffff00010e559c00, kcov->t = ffff00010e559c00