BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 13639 Comm: syz-executor.5 Not tainted 5.8.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:3063 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3162 [inline]
 validate_chain kernel/locking/lockdep.c:3183 [inline]
 __lock_acquire.cold+0x11/0x3f8 kernel/locking/lockdep.c:4380
 lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:4959
 write_seqcount_begin_nested include/linux/seqlock.h:408 [inline]
 write_seqcount_begin include/linux/seqlock.h:413 [inline]
 psi_group_change+0xd3/0x710 kernel/sched/psi.c:691
 psi_task_change+0x142/0x220 kernel/sched/psi.c:791
 psi_enqueue kernel/sched/stats.h:82 [inline]
 enqueue_task kernel/sched/core.c:1291 [inline]
 activate_task kernel/sched/core.c:1317 [inline]
 ttwu_do_activate+0x27d/0x4b0 kernel/sched/core.c:2247
 ttwu_queue kernel/sched/core.c:2412 [inline]
 try_to_wake_up+0x5f4/0x1360 kernel/sched/core.c:2663
 swake_up_locked kernel/sched/swait.c:30 [inline]
 swake_up_locked kernel/sched/swait.c:22 [inline]
 swake_up_one+0x71/0x1b0 kernel/sched/swait.c:53
 rcu_report_exp_cpu_mult+0x17a/0x2e0 kernel/rcu/tree_exp.h:250
 rcu_report_exp_rdp kernel/rcu/tree_exp.h:259 [inline]
 rcu_preempt_deferred_qs_irqrestore+0x59e/0xb00 kernel/rcu/tree_plugin.h:468
 rcu_note_context_switch+0x1eb/0x1600 kernel/rcu/tree_plugin.h:319
 __schedule+0x225/0x1eb0 kernel/sched/core.c:4114
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:4334
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:40
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x36/0x40 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:393 [inline]
 follow_page_pte+0xd9e/0x1430 mm/gup.c:543
 follow_pmd_mask mm/gup.c:659 [inline]
 follow_pud_mask mm/gup.c:704 [inline]
 follow_p4d_mask mm/gup.c:730 [inline]
 follow_page_mask+0xdd3/0x1df0 mm/gup.c:789
 __get_user_pages+0x657/0x1760 mm/gup.c:1111
 __get_user_pages_locked mm/gup.c:1306 [inline]
 get_user_pages_unlocked+0x191/0x650 mm/gup.c:2082
 __gup_longterm_unlocked mm/gup.c:2732 [inline]
 internal_get_user_pages_fast+0x1b2e/0x2a00 mm/gup.c:2805
 get_user_pages_fast+0x49/0x70 mm/gup.c:2901
 iov_iter_get_pages+0x2a2/0x10f2 lib/iov_iter.c:1323
 af_alg_make_sg+0x98/0x400 crypto/af_alg.c:395
 hash_sendmsg+0x380/0xac0 crypto/algif_hash.c:94
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 __sys_sendto+0x21c/0x320 net/socket.c:1995
 __do_sys_sendto net/socket.c:2007 [inline]
 __se_sys_sendto net/socket.c:2003 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2003
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c1d9
Code: Bad RIP value.
RSP: 002b:00007fbb064c0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002a6c0 RCX: 000000000045c1d9
RDX: fffffffffffffd65 RSI: 00000000205c8f58 RDI: 0000000000000005
RBP: 000000000078bf58 R08: 0000000000000000 R09: fffffffffffffe29
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffee82afd9f R14: 00007fbb064c19c0 R15: 000000000078bf0c