ion_buffer_destroy: buffer still mapped in the kernel Not allocated shadow for addr ffff88017933e5c0 (page ffffea0008d73740) Attempted to access 8 bytes ------------[ cut here ]------------ kernel BUG at mm/kmsan/kmsan.c:1075! invalid opcode: 0000 [#1] SMP CPU: 0 PID: 6354 Comm: syz-executor3 Not tainted 4.19.0-rc4+ #63 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 mm/kmsan/kmsan.c:1073 Code: e9 89 00 00 00 c7 04 25 20 73 28 8c 01 00 00 00 65 48 8b 04 25 00 fd 02 00 c6 80 7b 09 00 00 01 80 3c 25 38 73 28 8c 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 11 bc 57 8b 31 c0 4c RSP: 0018:ffff88015659f780 EFLAGS: 00010046 RAX: 000000000000001b RBX: 0000000000000000 RCX: f8a35d7caf0c7b00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffff88015659f7b0 R08: 0000000000000000 R09: ffff88021fc38f50 R10: 0000000000000000 R11: ffffffff86258280 R12: 0000000000000001 R13: ffff88017933e5c0 R14: 0000000000000001 R15: 0000000000000008 FS: 0000000000cc0940(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000706158 CR3: 000000015656f000 CR4: 00000000001406f0 Call Trace: kmsan_internal_memset_shadow mm/kmsan/kmsan.c:163 [inline] kmsan_internal_unpoison_shadow+0x5c/0xe0 mm/kmsan/kmsan.c:200 kmsan_unpoison_shadow+0x72/0xd0 mm/kmsan/kmsan.c:214 native_ptep_get_and_clear arch/x86/include/asm/pgtable_64.h:87 [inline] ptep_get_and_clear arch/x86/include/asm/pgtable.h:1104 [inline] vunmap_pte_range mm/vmalloc.c:67 [inline] vunmap_pmd_range mm/vmalloc.c:84 [inline] vunmap_pud_range mm/vmalloc.c:100 [inline] vunmap_p4d_range mm/vmalloc.c:116 [inline] vunmap_page_range+0x828/0xc20 mm/vmalloc.c:131 unmap_vmap_area mm/vmalloc.c:604 [inline] free_unmap_vmap_area mm/vmalloc.c:739 [inline] remove_vm_area+0x39b/0x450 mm/vmalloc.c:1491 __vunmap+0x34c/0x5d0 mm/vmalloc.c:1519 vfree+0x79/0x170 mm/vmalloc.c:1594 copy_entries_to_user net/ipv4/netfilter/arp_tables.c:706 [inline] get_entries net/ipv4/netfilter/arp_tables.c:861 [inline] do_arpt_get_ctl+0xddb/0xe80 net/ipv4/netfilter/arp_tables.c:1482 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x481/0x4e0 net/netfilter/nf_sockopt.c:122 ip_getsockopt+0x2b1/0x470 net/ipv4/ip_sockglue.c:1577 tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3583 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:2997 __sys_getsockopt+0x48c/0x550 net/socket.c:1937 __do_sys_getsockopt net/socket.c:1948 [inline] __se_sys_getsockopt+0xe1/0x100 net/socket.c:1945 __x64_sys_getsockopt+0x62/0x80 net/socket.c:1945 do_syscall_64+0xbe/0x100 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x45a0aa Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 88 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 88 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:0000000000a3f648 EFLAGS: 00000212 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000a3f750 RCX: 000000000045a0aa RDX: 0000000000000061 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000a3f65c R09: 000000000000000a R10: 0000000000a3f750 R11: 0000000000000212 R12: 0000000000000000 R13: 000000000003b687 R14: 0000000000000006 R15: 0000000000000003 Modules linked in: ---[ end trace c8fcc6cd69659333 ]--- RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 mm/kmsan/kmsan.c:1073 Code: e9 89 00 00 00 c7 04 25 20 73 28 8c 01 00 00 00 65 48 8b 04 25 00 fd 02 00 c6 80 7b 09 00 00 01 80 3c 25 38 73 28 8c 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 11 bc 57 8b 31 c0 4c RSP: 0018:ffff88015659f780 EFLAGS: 00010046 RAX: 000000000000001b RBX: 0000000000000000 RCX: f8a35d7caf0c7b00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffff88015659f7b0 R08: 0000000000000000 R09: ffff88021fc38f50 R10: 0000000000000000 R11: ffffffff86258280 R12: 0000000000000001 R13: ffff88017933e5c0 R14: 0000000000000001 R15: 0000000000000008 FS: 0000000000cc0940(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000706158 CR3: 000000015656f000 CR4: 00000000001406f0