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kernel BUG at arch/x86/mm/physaddr.c:28!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7397 Comm: syz-executor.4 Not tainted 5.7.0-rc6-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: e5 55 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 80 9b 3f 00 48 85 db 75 0d e8 e6 99 3f 00 4c 89 e0 5b 5d 41 5c c3 e8 d9 99 3f 00 <0f> 0b e8 d2 99 3f 00 48 c7 c0 10 10 88 89 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc90005297c68 EFLAGS: 00010293
RAX: ffff8880596f6100 RBX: 0770007700000000 RCX: ffffffff81339ae8
RDX: 0000000000000000 RSI: ffffffff81339b47 RDI: 0000000000000006
RBP: 0770007780000000 R08: ffff8880596f6100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 077077f700000000
R13: ffffc90005297cc0 R14: 0000000000000000 R15: 0000000000000282
FS:  0000000001257940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000c9ecb8 CR3: 0000000059a6d000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 virt_to_head_page include/linux/mm.h:833 [inline]
 qlink_to_cache mm/kasan/quarantine.c:128 [inline]
 qlist_free_all+0xbb/0x140 mm/kasan/quarantine.c:164
 quarantine_reduce+0x135/0x170 mm/kasan/quarantine.c:260
 __kasan_kmalloc.constprop.0+0x97/0xd0 mm/kasan/common.c:476
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc mm/slab.c:3320 [inline]
 kmem_cache_alloc+0x11b/0x740 mm/slab.c:3484
 getname_flags fs/namei.c:138 [inline]
 getname_flags+0xd2/0x5b0 fs/namei.c:128
 user_path_at_empty+0x2a/0x50 fs/namei.c:2632
 user_path_at include/linux/namei.h:59 [inline]
 ksys_umount+0x15d/0xe40 fs/namespace.c:1683
 __do_sys_umount fs/namespace.c:1709 [inline]
 __se_sys_umount fs/namespace.c:1707 [inline]
 __x64_sys_umount+0x50/0x70 fs/namespace.c:1707
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45f457
Code: 64 89 04 25 d0 02 00 00 58 5f ff d0 48 89 c7 e8 8f be ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ad 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:0000000000c9ecb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00000000000c15b4 RCX: 000000000045f457
RDX: 000000000000000c RSI: 0000000000000002 RDI: 0000000000c9fdf0
RBP: 00000000000005db R08: 0000000000000001 R09: 0000000001257940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000c9fdf0
R13: 0000000000c9fde0 R14: 0000000000000000 R15: 0000000000c9fdf0
Modules linked in:
---[ end trace 5a90fa6fbb5af106 ]---
RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:28
Code: e5 55 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 80 9b 3f 00 48 85 db 75 0d e8 e6 99 3f 00 4c 89 e0 5b 5d 41 5c c3 e8 d9 99 3f 00 <0f> 0b e8 d2 99 3f 00 48 c7 c0 10 10 88 89 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc90005297c68 EFLAGS: 00010293
RAX: ffff8880596f6100 RBX: 0770007700000000 RCX: ffffffff81339ae8
RDX: 0000000000000000 RSI: ffffffff81339b47 RDI: 0000000000000006
RBP: 0770007780000000 R08: ffff8880596f6100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 077077f700000000
R13: ffffc90005297cc0 R14: 0000000000000000 R15: 0000000000000282
FS:  0000000001257940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ea34000 CR3: 0000000059a6d000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400