BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 0 P4D 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13188 Comm: syz-executor Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010202
RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881e6ab8fc0
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881d7a271c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffc250
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d7a271c0
FS:  0000555576138500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001da9d9000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 call_timer_fn+0x3c/0x380 kernel/time/timer.c:1448
 expire_timers kernel/time/timer.c:1493 [inline]
 __run_timers+0x81d/0xb60 kernel/time/timer.c:1817
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830
 __do_softirq+0x236/0x660 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x197/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:539 [inline]
 smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
 </IRQ>
RIP: 0010:clear_page_erms+0x7/0x10 arch/x86/lib/clear_page_64.S:49
Code: 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 b9 00 10 00 00 31 c0 <f3> aa c3 00 00 90 90 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffff8881e58577a8 EFLAGS: 00010246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 1ffff1103cd57343 RCX: 00000000000001c0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881d9c01e40
RBP: ffff8881e58577f0 R08: dffffc0000000000 R09: ffffed103e4c5404
R10: ffffed103e4c5404 R11: 1ffff1103e4c5403 R12: ffff8881e6ab9a18
R13: ffff8881d9c01000 R14: dffffc0000000000 R15: 0000000000000001
 get_page_from_freelist+0x1296/0x1310 mm/page_alloc.c:3794
 __alloc_pages_nodemask+0x202/0x4b0 mm/page_alloc.c:4894
 __alloc_pages include/linux/gfp.h:503 [inline]
 __alloc_pages_node include/linux/gfp.h:516 [inline]
 alloc_pages_node include/linux/gfp.h:530 [inline]
 __vmalloc_area_node mm/vmalloc.c:-1 [inline]
 __vmalloc_node_range+0x36a/0x6e0 mm/vmalloc.c:2499
 vmalloc_user+0x73/0x80 mm/vmalloc.c:2629
 kcov_mmap+0x2b/0x120 kernel/kcov.c:450
 call_mmap include/linux/fs.h:1996 [inline]
 mmap_region+0x101b/0x15a0 mm/mmap.c:1812
 do_mmap+0x826/0xd90 mm/mmap.c:1581
 do_mmap_pgoff include/linux/mm.h:2480 [inline]
 vm_mmap_pgoff+0x195/0x230 mm/util.c:528
 ksys_mmap_pgoff+0x16f/0x1e0 mm/mmap.c:1631
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:97 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:88 [inline]
 __x64_sys_mmap+0xfa/0x110 arch/x86/kernel/sys_x86_64.c:88
 do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fc829bb59a3
Code: f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 89 ca 41 f7 c1 ff 0f 00 00 75 14 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 25 c3 0f 1f 40 00 48 c7 c0 a8 ff ff ff 64 c7
RSP: 002b:00007ffcf9b56508 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fc829ddcf40 RCX: 00007fc829bb59a3
RDX: 0000000000000003 RSI: 0000000000800000 RDI: 00007fc828220000
RBP: 00007fc829ddd738 R08: 00000000000000d7 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
Modules linked in:
CR2: 0000000000000000
---[ end trace 40560d61227e7a4e ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010202
RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881e6ab8fc0
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881d7a271c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffc250
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d7a271c0
FS:  0000555576138500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001da9d9000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	48 89 47 18          	mov    %rax,0x18(%rdi)
   4:	48 89 47 20          	mov    %rax,0x20(%rdi)
   8:	48 89 47 28          	mov    %rax,0x28(%rdi)
   c:	48 89 47 30          	mov    %rax,0x30(%rdi)
  10:	48 89 47 38          	mov    %rax,0x38(%rdi)
  14:	48 8d 7f 40          	lea    0x40(%rdi),%rdi
  18:	75 d9                	jne    0xfffffff3
  1a:	90                   	nop
  1b:	c3                   	ret
  1c:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  23:	b9 00 10 00 00       	mov    $0x1000,%ecx
  28:	31 c0                	xor    %eax,%eax
* 2a:	f3 aa                	rep stos %al,%es:(%rdi) <-- trapping instruction
  2c:	c3                   	ret
  2d:	00 00                	add    %al,(%rax)
  2f:	90                   	nop
  30:	90                   	nop
  31:	00 00                	add    %al,(%rax)
  33:	55                   	push   %rbp
  34:	48 89 e5             	mov    %rsp,%rbp
  37:	41 57                	push   %r15
  39:	41 56                	push   %r14
  3b:	41 55                	push   %r13
  3d:	41 54                	push   %r12
  3f:	53                   	push   %rbx