------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:28!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 29551 Comm: syz-executor.5 Not tainted 5.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__phys_addr+0xd3/0x140 arch/x86/mm/physaddr.c:28
Code: e3 44 89 e9 31 ff 48 d3 eb 48 89 de e8 56 2e 41 00 48 85 db 75 0f e8 ec 28 41 00 4c 89 e0 5b 5d 41 5c 41 5d c3 e8 dd 28 41 00 <0f> 0b e8 d6 28 41 00 48 c7 c0 10 50 6b 8b 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900107dfa98 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801b948000 RSI: ffffffff81347ee3 RDI: 0000000000000003
RBP: 0000000080000000 R08: 0000000080000000 R09: ffff8880adb2006f
R10: ffffffff81347e5e R11: 000000000000003f R12: 0000778000000000
R13: 0000000000000000 R14: 00000000004180c0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007fff22dc7960 CR3: 0000000148e35000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 virt_to_head_page include/linux/mm.h:899 [inline]
 kmem_cache_free+0x43/0x5b0 mm/slub.c:3226
 pgtable_pte_page_dtor include/linux/mm.h:2259 [inline]
 ___pte_free_tlb+0x19/0x1a0 arch/x86/mm/pgtable.c:55
 __pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline]
 free_pte_range mm/memory.c:231 [inline]
 free_pmd_range mm/memory.c:249 [inline]
 free_pud_range mm/memory.c:283 [inline]
 free_p4d_range mm/memory.c:317 [inline]
 free_pgd_range+0x48d/0xbe0 mm/memory.c:397
 free_pgtables+0x230/0x2f0 mm/memory.c:429
 exit_mmap+0x1df/0x620 mm/mmap.c:3202
 __mmput+0x122/0x470 kernel/fork.c:1101
 mmput+0x58/0x60 kernel/fork.c:1122
 exit_mm kernel/exit.c:501 [inline]
 do_exit+0xae2/0x2a60 kernel/exit.c:812
 do_group_exit+0x125/0x310 kernel/exit.c:922
 __do_sys_exit_group kernel/exit.c:933 [inline]
 __se_sys_exit_group kernel/exit.c:931 [inline]
 __ia32_sys_exit_group+0x3a/0x50 kernel/exit.c:931
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7faf549
Code: Unable to access opcode bytes at RIP 0xf7faf51f.
RSP: 002b:00000000086cfd1c EFLAGS: 00000206 ORIG_RAX: 00000000000000fc
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000ffffffff RSI: 0000000000000003 RDI: 000000000816c000
RBP: 000000000000001e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 0b309fb964e47510 ]---
RIP: 0010:__phys_addr+0xd3/0x140 arch/x86/mm/physaddr.c:28
Code: e3 44 89 e9 31 ff 48 d3 eb 48 89 de e8 56 2e 41 00 48 85 db 75 0f e8 ec 28 41 00 4c 89 e0 5b 5d 41 5c 41 5d c3 e8 dd 28 41 00 <0f> 0b e8 d6 28 41 00 48 c7 c0 10 50 6b 8b 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900107dfa98 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801b948000 RSI: ffffffff81347ee3 RDI: 0000000000000003
RBP: 0000000080000000 R08: 0000000080000000 R09: ffff8880adb2006f
R10: ffffffff81347e5e R11: 000000000000003f R12: 0000778000000000
R13: 0000000000000000 R14: 00000000004180c0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007fff22dc7960 CR3: 0000000148e35000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e3 44                	jrcxz  0x46
   2:	89 e9                	mov    %ebp,%ecx
   4:	31 ff                	xor    %edi,%edi
   6:	48 d3 eb             	shr    %cl,%rbx
   9:	48 89 de             	mov    %rbx,%rsi
   c:	e8 56 2e 41 00       	callq  0x412e67
  11:	48 85 db             	test   %rbx,%rbx
  14:	75 0f                	jne    0x25
  16:	e8 ec 28 41 00       	callq  0x412907
  1b:	4c 89 e0             	mov    %r12,%rax
  1e:	5b                   	pop    %rbx
  1f:	5d                   	pop    %rbp
  20:	41 5c                	pop    %r12
  22:	41 5d                	pop    %r13
  24:	c3                   	retq   
  25:	e8 dd 28 41 00       	callq  0x412907
  2a:	0f 0b                	ud2     <-- trapping instruction
  2c:	e8 d6 28 41 00       	callq  0x412907
  31:	48 c7 c0 10 50 6b 8b 	mov    $0xffffffff8b6b5010,%rax
  38:	48                   	rex.W
  39:	ba 00 00 00 00       	mov    $0x0,%edx
  3e:	00 fc                	add    %bh,%ah