------------[ cut here ]------------
HSR: Could not send supervision frame
WARNING: CPU: 1 PID: 113 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x608/0x810 net/hsr/hsr_device.c:294
Modules linked in:

CPU: 1 PID: 113 Comm: kswapd0 Not tainted 6.5.0-rc5-syzkaller-00296-gf8de32cc060b #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:send_hsr_supervision_frame+0x608/0x810 net/hsr/hsr_device.c:294
Code: 04 31 ff 89 de e8 68 35 75 f7 84 db 0f 85 bd fe ff ff e8 2b 3a 75 f7 48 c7 c7 e0 89 ad 8b c6 05 6f 09 85 04 01 e8 58 fc 3b f7 <0f> 0b e9 9e fe ff ff e8 0c 3a 75 f7 41 be 3c 00 00 00 ba 01 00 00
RSP: 0000:ffffc90000588bd8 EFLAGS: 00010286

RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: ffff8880190da400 RSI: ffffffff814ccc86 RDI: 0000000000000001
RBP: ffffc90000588c40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000123 R12: ffff88805c6d7500
R13: 0000000000000000 R14: ffffffff8a10d090 R15: 0000000000000017
FS:  0000000000000000(0000) GS:ffff88802c700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000046b09d CR3: 000000001cc10000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hsr_announce+0x116/0x380 net/hsr/hsr_device.c:382
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:get_random_u8+0x40c/0x7e0 drivers/char/random.c:530
Code: fc 48 85 ed 0f 85 34 02 00 00 e8 6f da ec fc 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 ed d5 ec fc 48 85 db 0f 85 60 02 00 00 <e8> 4f da ec fc 0f b6 5c 24 38 e8 45 da ec fc 48 b8 00 00 00 00 00
RSP: 0000:ffffc90001f5f890 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880190da400 RSI: ffffffff84993086 RDI: 0000000000000007
RBP: 0000000000000200 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802c7390c0
R13: 1ffff920003ebf15 R14: 0000000000000001 R15: 0000000000000006
 get_random_u32_below include/linux/random.h:78 [inline]
 lru_gen_rotate_memcg+0x1e/0xb70 mm/vmscan.c:4768
 shrink_many mm/vmscan.c:5464 [inline]
 lru_gen_shrink_node mm/vmscan.c:5570 [inline]
 shrink_node+0x29e3/0x3730 mm/vmscan.c:6510
 kswapd_shrink_node mm/vmscan.c:7315 [inline]
 balance_pgdat+0xa37/0x1b90 mm/vmscan.c:7505
 kswapd+0x5be/0xbf0 mm/vmscan.c:7765
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
----------------
Code disassembly (best guess):
   0:	fc                   	cld
   1:	48 85 ed             	test   %rbp,%rbp
   4:	0f 85 34 02 00 00    	jne    0x23e
   a:	e8 6f da ec fc       	call   0xfcecda7e
   f:	9c                   	pushf
  10:	5b                   	pop    %rbx
  11:	81 e3 00 02 00 00    	and    $0x200,%ebx
  17:	31 ff                	xor    %edi,%edi
  19:	48 89 de             	mov    %rbx,%rsi
  1c:	e8 ed d5 ec fc       	call   0xfcecd60e
  21:	48 85 db             	test   %rbx,%rbx
  24:	0f 85 60 02 00 00    	jne    0x28a
* 2a:	e8 4f da ec fc       	call   0xfcecda7e <-- trapping instruction
  2f:	0f b6 5c 24 38       	movzbl 0x38(%rsp),%ebx
  34:	e8 45 da ec fc       	call   0xfcecda7e
  39:	48                   	rex.W
  3a:	b8 00 00 00 00       	mov    $0x0,%eax