------------[ cut here ]------------
WARNING: CPU: 1 PID: 13605 at net/core/gen_stats.c:157 gnet_stats_add_basic+0x4d/0x2a0 net/core/gen_stats.c:157
Modules linked in:
CPU: 1 PID: 13605 Comm: kworker/u4:13 Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:gnet_stats_add_basic+0x4d/0x2a0 net/core/gen_stats.c:157
Code: 0f 84 69 01 00 00 e8 52 a1 59 fa 31 ff 65 8b 2d b9 ab e4 78 81 e5 00 01 ff 00 89 ee e8 7c a8 59 fa 85 ed 74 10 e8 33 a1 59 fa <0f> 0b 4d 85 f6 0f 84 70 01 00 00 49 c7 c7 e4 ae 6e 8d bd ff ff ff
RSP: 0018:ffffc90000dc0b98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888072d85120 RCX: 0000000000000100
RDX: ffff88802c580000 RSI: ffffffff871d445d RDI: 0000000000000003
RBP: 0000000000000100 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff871d45d0 R11: 0000000000000000 R12: ffff888024a3f608
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd206755718 CR3: 0000000046b66000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 est_fetch_counters+0xc3/0x160 net/core/gen_estimator.c:69
 est_timer+0x92/0x730 net/core/gen_estimator.c:83
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:stack_not_used include/linux/sched/task_stack.h:99 [inline]
RIP: 0010:check_stack_usage kernel/exit.c:710 [inline]
RIP: 0010:do_exit+0x1859/0x2a30 kernel/exit.c:868
Code: c1 e0 2a 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e3 0e 00 00 49 be 00 00 00 00 00 fc ff df 4c 8b 6d 20 4c 89 ed e8 07 d2 30 00 <48> 83 c5 08 48 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 44 0c 00 00
RSP: 0018:ffffc9000a807e30 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff88802c580000 RCX: 0000000000000000
RDX: ffff88802c580000 RSI: ffffffff81461389 RDI: 0000000000000003
RBP: ffffc9000a806048 R08: 0000000000000000 R09: ffff88801de88607
R10: ffffffff814613ad R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000a800000 R14: dffffc0000000000 R15: ffff88802c5805e0
 call_usermodehelper_exec_async+0x418/0x580 kernel/umh.c:125
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
   0:	c1 e0 2a             	shl    $0x2a,%eax
   3:	48 89 fa             	mov    %rdi,%rdx
   6:	48 c1 ea 03          	shr    $0x3,%rdx
   a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   e:	0f 85 e3 0e 00 00    	jne    0xef7
  14:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  1b:	fc ff df
  1e:	4c 8b 6d 20          	mov    0x20(%rbp),%r13
  22:	4c 89 ed             	mov    %r13,%rbp
  25:	e8 07 d2 30 00       	callq  0x30d231
* 2a:	48 83 c5 08          	add    $0x8,%rbp <-- trapping instruction
  2e:	48 89 e8             	mov    %rbp,%rax
  31:	48 c1 e8 03          	shr    $0x3,%rax
  35:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
  3a:	0f 85 44 0c 00 00    	jne    0xc84