------------[ cut here ]------------ kernel BUG at arch/x86/mm/physaddr.c:28! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 18970 Comm: systemd-udevd 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:ffffc90005487d68 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 7777777777777777 RCX: ffffffff81345848 RDX: ffff888057d3c140 RSI: ffffffff813458a7 RDI: 0000000000000006 RBP: 77777777f7777777 R08: 0000000000000000 R09: 0000000000000000 R10: 77777777f7777777 R11: 0000000000000000 R12: 7777eef777777777 R13: ffffc90005487dc0 R14: 0000000000000000 R15: 0000000000000282 FS: 00007fd73f3b18c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000b90004 CR3: 000000004ffcd000 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 mm/slab.c:3320 [inline] kmem_cache_alloc+0x12c/0x3b0 mm/slab.c:3484 prepare_creds+0x39/0x6c0 kernel/cred.c:258 access_override_creds fs/open.c:353 [inline] do_faccessat+0x3d7/0x820 fs/open.c:417 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fd73e2249c7 Code: Bad RIP value. RSP: 002b:00007fff4cc627e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 000055938f894680 RCX: 00007fd73e2249c7 RDX: 00007fff4cc62c50 RSI: 0000000000000000 RDI: 000055938d9a3bbd RBP: 000055938f894680 R08: 0000000000000000 R09: 0000000000000008 R10: 000055938f891e90 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff4cc62850 R14: 000000000000000a R15: 0000000003938700 Modules linked in: ---[ end trace df4b97a6b3ac8e5d ]--- 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:ffffc90005487d68 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 7777777777777777 RCX: ffffffff81345848 RDX: ffff888057d3c140 RSI: ffffffff813458a7 RDI: 0000000000000006 RBP: 77777777f7777777 R08: 0000000000000000 R09: 0000000000000000 R10: 77777777f7777777 R11: 0000000000000000 R12: 7777eef777777777 R13: ffffc90005487dc0 R14: 0000000000000000 R15: 0000000000000282 FS: 00007fd73f3b18c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004ffcd000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400