------------[ cut here ]------------ kernel BUG at arch/x86/mm/physaddr.c:27! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 740 Comm: systemd-udevd Not tainted 4.19.202-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:27 Code: 5d fb 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 90 25 37 00 48 85 db 75 0d e8 f6 23 37 00 4c 89 e0 5b 5d 41 5c c3 e8 e9 23 37 00 <0f> 0b e8 e2 23 37 00 48 c7 c0 10 30 e7 89 48 ba 00 00 00 00 00 fc RSP: 0018:ffff888232df79a8 EFLAGS: 00010293 RAX: ffff888042d8c240 RBX: 0000000700000007 RCX: ffffffff812b5e48 RDX: 0000000000000000 RSI: ffffffff812b5ea7 RDI: 0000000000000006 RBP: 0000000780000007 R08: 0000000000000000 R09: 0000000780000007 ------------[ cut here ]------------ R10: 0000000000000006 R11: 0000000000000000 R12: 0000778700000007 kernel BUG at arch/x86/mm/physaddr.c:27! R13: ffff888232df7a00 R14: 0000000000000000 R15: 0000000000000282 FS: 00007f93cbd678c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffa5446b20 CR3: 000000022fc07000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virt_to_head_page include/linux/mm.h:665 [inline] qlink_to_cache mm/kasan/quarantine.c:127 [inline] qlist_free_all+0xbb/0x140 mm/kasan/quarantine.c:163 quarantine_reduce+0x1a9/0x230 mm/kasan/quarantine.c:259 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:538 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc+0x110/0x370 mm/slab.c:3557 getname_flags+0xce/0x590 fs/namei.c:140 user_path_at_empty+0x2a/0x50 fs/namei.c:2609 user_path_at include/linux/namei.h:57 [inline] vfs_statx+0x113/0x210 fs/stat.c:185 vfs_lstat include/linux/fs.h:3137 [inline] __do_sys_newlstat fs/stat.c:350 [inline] __se_sys_newlstat+0x96/0x120 fs/stat.c:344 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f93cabd9335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007fffa5447718 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 00005584ba6268a0 RCX: 00007f93cabd9335 RDX: 00007fffa5447750 RSI: 00007fffa5447750 RDI: 00005584ba6258a0 RBP: 00007fffa5447810 R08: 00007f93cae98238 R09: 0000000000001010 R10: 00007f93cae97b58 R11: 0000000000000246 R12: 00005584ba6258a0 R13: 00005584ba6258ac R14: 00005584ba623885 R15: 00005584ba62388c Modules linked in: invalid opcode: 0000 [#2] PREEMPT SMP KASAN ---[ end trace ebc4540475673d8b ]--- CPU: 1 PID: 701 Comm: syz-executor.2 Tainted: G D 4.19.202-syzkaller #0 RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:27 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:27 Code: 5d fb 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 90 25 37 00 48 85 db 75 0d e8 f6 23 37 00 4c 89 e0 5b 5d 41 5c c3 e8 e9 23 37 00 <0f> 0b e8 e2 23 37 00 48 c7 c0 10 30 e7 89 48 ba 00 00 00 00 00 fc RSP: 0018:ffff8882138e6dd0 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0707000707000707 RCX: ffffc9000a132000 Code: 5d fb 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 90 25 37 00 48 85 db 75 0d e8 f6 23 37 00 4c 89 e0 5b 5d 41 5c c3 e8 e9 23 37 00 <0f> 0b e8 e2 23 37 00 48 c7 c0 10 30 e7 89 48 ba 00 00 00 00 00 fc RDX: 0000000000040000 RSI: ffffffff812b5ea7 RDI: 0000000000000006 RBP: 0707000787000707 R08: 0000000000000000 R09: 0707000787000707 R10: 0000000000000006 R11: 000000000000000a R12: 0707778707000707 R13: ffff8882138e6e28 R14: 0000000000000000 R15: 0000000000000282 FS: 00007f1f6e5d8700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RSP: 0018:ffff888232df79a8 EFLAGS: 00010293 CR2: 00007f04e3943000 CR3: 000000022e304000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virt_to_head_page include/linux/mm.h:665 [inline] qlink_to_cache mm/kasan/quarantine.c:127 [inline] qlist_free_all+0xbb/0x140 mm/kasan/quarantine.c:163 quarantine_reduce+0x1a9/0x230 mm/kasan/quarantine.c:259 RAX: ffff888042d8c240 RBX: 0000000700000007 RCX: ffffffff812b5e48 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:538 RDX: 0000000000000000 RSI: ffffffff812b5ea7 RDI: 0000000000000006 RBP: 0000000780000007 R08: 0000000000000000 R09: 0000000780000007 R10: 0000000000000006 R11: 0000000000000000 R12: 0000778700000007 R13: ffff888232df7a00 R14: 0000000000000000 R15: 0000000000000282 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc+0x110/0x370 mm/slab.c:3557 ptlock_alloc+0x1d/0x70 mm/memory.c:4969 FS: 00007f93cbd678c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 ptlock_init include/linux/mm.h:1900 [inline] pgtable_page_ctor include/linux/mm.h:1934 [inline] pte_alloc_one+0x68/0x190 arch/x86/mm/pgtable.c:38 __pte_alloc+0x21/0x340 mm/memory.c:665 do_anonymous_page+0xff4/0x1be0 mm/memory.c:3282 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000540198 CR3: 000000022fc07000 CR4: 00000000001426f0 handle_pte_fault mm/memory.c:4173 [inline] __handle_mm_fault+0x227a/0x41c0 mm/memory.c:4299 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 handle_mm_fault+0x436/0xb10 mm/memory.c:4336