BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 8521 Comm: sed Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
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: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
 do_write_seqcount_begin_nested include/linux/seqlock.h:515 [inline]
 do_write_seqcount_begin include/linux/seqlock.h:541 [inline]
 psi_group_change+0x240/0x1430 kernel/sched/psi.c:801
 psi_task_change+0xec/0x234 kernel/sched/psi.c:924
 psi_enqueue kernel/sched/stats.h:143 [inline]
 enqueue_task kernel/sched/core.c:2056 [inline]
 activate_task+0x220/0x240 kernel/sched/core.c:2088
 ttwu_do_activate+0x150/0x214 kernel/sched/core.c:3700
 ttwu_queue kernel/sched/core.c:3905 [inline]
 try_to_wake_up+0x424/0xcb4 kernel/sched/core.c:4228
 default_wake_function+0x4c/0x60 kernel/sched/core.c:6887
 autoremove_wake_function+0x24/0xf8 kernel/sched/wait.c:419
 __wake_up_common+0x220/0x3ac kernel/sched/wait.c:107
 __wake_up_common_lock kernel/sched/wait.c:138 [inline]
 __wake_up+0x108/0x180 kernel/sched/wait.c:160
 stop_this_handle+0x27c/0x464 fs/jbd2/transaction.c:751
 jbd2_journal_stop+0x6d8/0xc98 fs/jbd2/transaction.c:1970
 __ext4_journal_stop+0xe4/0x194 fs/ext4/ext4_jbd2.c:127
 ext4_dirty_inode+0xe4/0x110 fs/ext4/inode.c:6167
 __mark_inode_dirty+0x2e8/0x11cc fs/fs-writeback.c:2515
 generic_update_time fs/inode.c:1946 [inline]
 inode_update_time fs/inode.c:1959 [inline]
 touch_atime+0x410/0x7dc fs/inode.c:2031
 file_accessed include/linux/fs.h:2606 [inline]
 ext4_file_mmap+0x144/0x2fc fs/ext4/file.c:784
 call_mmap include/linux/fs.h:2276 [inline]
 mmap_file+0x6c/0xc8 mm/util.c:1109
 __mmap_region mm/mmap.c:2772 [inline]
 mmap_region+0xc88/0x1860 mm/mmap.c:2916
 do_mmap+0xa64/0x1210 mm/mmap.c:1436
 vm_mmap_pgoff+0x194/0x298 mm/util.c:520
 ksys_mmap_pgoff+0x364/0x5a0 mm/mmap.c:1482
 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline]
 __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline]
 __arm64_sys_mmap+0x108/0x120 arch/arm64/kernel/sys.c:21
 __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