rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=18bc/1/0x4000000000000000 softirq=86786/86787 fqs=5219
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   942668          0            0
rcu: 	cputime:    35275      17204           99   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=83825 q=1626 ncpus=2)
CPU: 1 UID: 0 PID: 20600 Comm: syz.6.4350 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:unwind_next_frame+0x130e/0x2390
Code: c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49
RSP: 0018:ffffc900001e01f8 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffffffff90216f20 RCX: dffffc0000000000
RDX: ffffffff90216f18 RSI: ffffffff90d29150 RDI: ffffffff8be2fca0
RBP: ffffffff90216f18 R08: 0000000000000003 R09: ffffffff8172c025
R10: ffffc900001e0318 R11: ffffffff81ac34b0 R12: ffffffff8af2f567
R13: ffffffff90216f18 R14: ffffc900001e02c8 R15: ffffffff90216f1c
FS:  00007f67d6f136c0(0000) GS:ffff8881a3c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555571fe2808 CR3: 0000000039c74000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 __sta_info_alloc+0x93/0x2640
 ieee80211_ibss_rx_no_sta+0x3e1/0x730
 ieee80211_prepare_and_rx_handle+0x3819/0x63f0
 ieee80211_rx_list+0x21b8/0x2a90
 ieee80211_rx_napi+0x1a8/0x3d0
 ieee80211_handle_queued_frames+0xe8/0x1f0
 tasklet_action_common+0x36c/0x580
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 4b 6e 17 f6 e8 46 b1 4e f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90007f0dfa0 EFLAGS: 00000286
RAX: e93ee86c362e5000 RBX: 0000000000000000 RCX: e93ee86c362e5000
RDX: 0000000000000006 RSI: ffffffff8d9b1618 RDI: 0000000000000001
RBP: ffffc90007f0e040 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000fe1bf4
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:arch_stack_walk+0x11c/0x150
Code: ff ff 4c 89 ff e8 24 25 09 00 48 85 c0 74 24 48 89 df 48 89 c6 4d 89 f3 2e e8 40 9f 10 0a 84 c0 74 11 4c 89 ff e8 54 26 09 00 <83> bd 78 ff ff ff 00 75 cf 65 48 8b 05 e3 c6 35 11 48 3b 45 d8 75
RSP: 0018:ffffc90007f0e108 EFLAGS: 00000292
RAX: 0000000090440f01 RBX: ffffc90007f0e1c0 RCX: e93ee86c362e5000
RDX: 0000000000000002 RSI: ffffffff8dba01e6 RDI: ffff888022ff9cc0
RBP: ffffc90007f0e190 R08: ffffc90007f0f330 R09: 0000000000000000
R10: ffffc90007f0e158 R11: fffff52000fe1c2d R12: ffff888022ff9cc0
R13: 1ffff92000fe1c4c R14: ffffffff81ac34b0 R15: ffffc90007f0e108
 stack_trace_save+0x9c/0xe0
 save_stack+0xf5/0x1f0
 __set_page_owner+0x8d/0x4a0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 folio_alloc_mpol_noprof+0x39/0x70
 shmem_alloc_and_add_folio+0x447/0xf60
 shmem_get_folio_gfp+0x59d/0x1660
 shmem_write_begin+0xf7/0x2b0
 generic_perform_write+0x2c5/0x900
 shmem_file_write_iter+0xf8/0x120
 __kernel_write_iter+0x393/0x860
 dump_user_range+0x8a0/0xc90
 elf_core_dump+0x337b/0x3990
 coredump_write+0x1169/0x1900
 vfs_coredump+0x1a4b/0x2ab0
 get_signal+0x1109/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 irqentry_exit_to_user_mode+0x81/0x120
 exc_page_fault+0x9f/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x38f8
Code: Unable to access opcode bytes at 0x38ce.
RSP: 002b:0000200000000228 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f67d63b6090 RCX: 00007f67d618ebe9
RDX: 0000200000000240 RSI: 0000200000000220 RDI: 0000000001000000
RBP: 00007f67d6211e19 R08: 0000200000000300 R09: 0000200000000300
R10: 00002000000002c0 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f67d63b6128 R14: 00007f67d63b6090 R15: 00007ffc8a0e4818
 </TASK>
