=============================
[ BUG: Invalid wait context ]
6.12.0-syzkaller-09099-ge2cf913314b9 #0 Not tainted
-----------------------------
syz.0.375/7515 is trying to lock:
ffff8880b873a970 (batched_entropy_u8.lock){-.-.}-{3:3}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
ffff8880b873a970 (batched_entropy_u8.lock){-.-.}-{3:3}, at: get_random_u8+0x1a0/0xaa0 drivers/char/random.c:551
other info that might help us debug this:
context-{5:5}
3 locks held by syz.0.375/7515:
 #0: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: __task_pid_nr_ns+0x28/0x450 kernel/pid.c:510
 #1: ffff8880b873e798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
 #2: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: do_perf_sw_event kernel/events/core.c:10142 [inline]
 #2: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: ___perf_sw_event+0x1bd/0x730 kernel/events/core.c:10176
stack backtrace:
CPU: 1 UID: 0 PID: 7515 Comm: syz.0.375 Not tainted 6.12.0-syzkaller-09099-ge2cf913314b9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
 check_wait_context kernel/locking/lockdep.c:4898 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
 get_random_u8+0x1bd/0xaa0 drivers/char/random.c:551
 get_random_u32_below include/linux/random.h:78 [inline]
 kfence_guarded_alloc+0x9c/0xcd0 mm/kfence/core.c:421
 __kfence_alloc+0x344/0x370 mm/kfence/core.c:1136
 kfence_alloc include/linux/kfence.h:129 [inline]
 slab_alloc_node mm/slub.c:4118 [inline]
 __kmalloc_cache_noprof+0x237/0x2c0 mm/slub.c:4290
 kmalloc_noprof include/linux/slab.h:879 [inline]
 add_stack_record_to_list mm/page_owner.c:172 [inline]
 inc_stack_record_count mm/page_owner.c:214 [inline]
 __set_page_owner+0x55f/0x800 mm/page_owner.c:329
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0x3649/0x3790 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 stack_depot_save_flags+0x666/0x830 lib/stackdepot.c:627
 kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 task_work_add+0xd9/0x490 kernel/task_work.c:77
 __perf_event_overflow+0x78d/0xdc0 kernel/events/core.c:9908
 perf_swevent_event+0x317/0x680
 do_perf_sw_event kernel/events/core.c:10149 [inline]
 ___perf_sw_event+0x4f3/0x730 kernel/events/core.c:10176
 __perf_sw_event_sched include/linux/perf_event.h:1497 [inline]
 perf_event_task_sched_out include/linux/perf_event.h:1530 [inline]
 prepare_task_switch kernel/sched/core.c:5173 [inline]
 context_switch kernel/sched/core.c:5316 [inline]
 __schedule+0x23df/0x4c30 kernel/sched/core.c:6756
 preempt_schedule_notrace+0x100/0x140 kernel/sched/core.c:7028
 preempt_schedule_notrace_thunk+0x1a/0x30 arch/x86/entry/thunk.S:13
 rcu_is_watching+0x7e/0xb0 kernel/rcu/tree.c:738
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xbf/0xa30 kernel/locking/lockdep.c:5860
 rcu_lock_release include/linux/rcupdate.h:347 [inline]
 rcu_read_unlock include/linux/rcupdate.h:880 [inline]
 __task_pid_nr_ns+0x37c/0x450 kernel/pid.c:514
 task_tgid_vnr include/linux/pid.h:294 [inline]
 __do_sys_getpid+0x1e/0x30 kernel/sys.c:969
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26dff76ee7
Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d b2 59 d0 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 23 f8 fb ff 0f 1f 00 b8 27 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007f26e0d25c48 EFLAGS: 00000206 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 00007f26e0d25db0 RCX: 00007f26dff76ee7
RDX: 00007f26e0d25c80 RSI: 00007f26e0d25db0 RDI: 0000000000000021
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 0000000000000073
R13: 00007f26e0d26ed0 R14: 9999999999999999 R15: 0000000000000000
 </TASK>