------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:28!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 21857 Comm: syz-executor.5 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:28
Code: e8 79 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 70 5b 3f 00 48 85 db 75 0d e8 c6 5e 3f 00 4c 89 e0 5b 5d 41 5c c3 e8 b9 5e 3f 00 <0f> 0b e8 b2 5e 3f 00 48 c7 c0 10 10 a8 89 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc90002607a70 EFLAGS: 00010216
RAX: 000000000000345b RBX: 00000000a8ea9180 RCX: ffffc90013db4000
RDX: 0000000000040000 RSI: ffffffff813458a7 RDI: 0000000000000006
RBP: 0000000128ea9180 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000128ea9180 R11: 0000000000000000 R12: 00007780a8ea9180
R13: ffffc90002607ac8 R14: 0000000000000000 R15: 0000000000000282
FS:  00007f01b44a4700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f33a96c9018 CR3: 0000000097977000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 virt_to_head_page include/linux/mm.h:841 [inline]
 qlink_to_cache mm/kasan/quarantine.c:128 [inline]
 qlist_free_all+0xbb/0x140 mm/kasan/quarantine.c:164
 quarantine_reduce+0x17e/0x200 mm/kasan/quarantine.c:260
 __kasan_kmalloc.constprop.0+0x9e/0xd0 mm/kasan/common.c:475
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc_node mm/slab.c:3263 [inline]
 kmem_cache_alloc_node+0x130/0x3c0 mm/slab.c:3575
 alloc_task_struct_node kernel/fork.c:169 [inline]
 dup_task_struct kernel/fork.c:875 [inline]
 copy_process+0x5d0/0x6d90 kernel/fork.c:1937
 _do_fork+0x12c/0xa70 kernel/fork.c:2443
 __do_sys_clone+0xef/0x150 kernel/fork.c:2599
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cb29
Code: Bad RIP value.
RSP: 002b:00007f01b44a3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00000000004db5a0 RCX: 000000000045cb29
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000100
RBP: 000000000078bf00 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000007c R14: 00000000004c34ba R15: 00007f01b44a46d4
Modules linked in:
---[ end trace 5326b83f429bf2ea ]---
RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:28
Code: e8 79 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 70 5b 3f 00 48 85 db 75 0d e8 c6 5e 3f 00 4c 89 e0 5b 5d 41 5c c3 e8 b9 5e 3f 00 <0f> 0b e8 b2 5e 3f 00 48 c7 c0 10 10 a8 89 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc90002607a70 EFLAGS: 00010216
RAX: 000000000000345b RBX: 00000000a8ea9180 RCX: ffffc90013db4000
RDX: 0000000000040000 RSI: ffffffff813458a7 RDI: 0000000000000006
RBP: 0000000128ea9180 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000128ea9180 R11: 0000000000000000 R12: 00007780a8ea9180
R13: ffffc90002607ac8 R14: 0000000000000000 R15: 0000000000000282
FS:  00007f01b44a4700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f33aaec3000 CR3: 0000000097977000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400