BUG: unable to handle kernel paging request at ffff8802d676dfc0 IP: slab_put_obj mm/slab.c:2613 [inline] IP: free_block+0x158/0x280 mm/slab.c:3406 PGD a832067 P4D a832067 PUD 0 Oops: 0002 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4522 Comm: syz-executor5 Not tainted 4.16.0-rc7+ #282 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:slab_put_obj mm/slab.c:2613 [inline] RIP: 0010:free_block+0x158/0x280 mm/slab.c:3406 RSP: 0018:ffff88018c147290 EFLAGS: 00010082 RAX: 000000000000002a RBX: ffff8801db034ec0 RCX: 00000000ffffffff RDX: ffff8801d676da80 RSI: ffff8801d676dfc1 RDI: 0000000000000000 RBP: ffff88018c1472d8 R08: 000000000759db40 R09: ffff8801dac01258 R10: ffff88018c1471a0 R11: 0000000000000000 R12: ffff8801dac001c0 R13: ffffea000759db60 R14: ffff8801dac01200 R15: ffffea000759db40 FS: 0000000000000000(0000) GS:ffff8801db000000(0063) knlGS:0000000008598900 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffff8802d676dfc0 CR3: 000000018c078004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cache_flusharray mm/slab.c:3457 [inline] ___cache_free+0x20a/0x2f0 mm/slab.c:3515 qlink_free mm/kasan/quarantine.c:147 [inline] qlist_free_all+0x8c/0x160 mm/kasan/quarantine.c:166 quarantine_reduce+0x141/0x170 mm/kasan/quarantine.c:259 kasan_kmalloc+0xca/0xe0 mm/kasan/kasan.c:537 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489 slab_post_alloc_hook mm/slab.h:443 [inline] slab_alloc_node mm/slab.c:3323 [inline] kmem_cache_alloc_node_trace+0x139/0x760 mm/slab.c:3649 kmalloc_node include/linux/slab.h:550 [inline] kzalloc_node include/linux/slab.h:712 [inline] __get_vm_area_node+0xae/0x340 mm/vmalloc.c:1402 __vmalloc_node_range+0xa3/0x650 mm/vmalloc.c:1754 __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc_node_flags mm/vmalloc.c:1818 [inline] vmalloc+0x45/0x50 mm/vmalloc.c:1840 xt_compat_add_offset+0x228/0x380 net/netfilter/x_tables.c:559 compat_calc_entry net/ipv4/netfilter/ip_tables.c:919 [inline] compat_table_info+0x22d/0x470 net/ipv4/netfilter/ip_tables.c:950 get_info+0x525/0x690 net/ipv6/netfilter/ip6_tables.c:1001 compat_do_ipt_get_ctl+0x468/0xc00 net/ipv4/netfilter/ip_tables.c:1658 compat_nf_sockopt net/netfilter/nf_sockopt.c:139 [inline] compat_nf_getsockopt+0x8b/0x130 net/netfilter/nf_sockopt.c:163 compat_ip_getsockopt+0x18a/0x230 net/ipv4/ip_sockglue.c:1604 inet_csk_compat_getsockopt+0x95/0x120 net/ipv4/inet_connection_sock.c:1028 compat_tcp_getsockopt+0x3d/0x70 net/ipv4/tcp.c:3370 compat_sock_common_getsockopt+0xb2/0x140 net/core/sock.c:2945 C_SYSC_getsockopt net/compat.c:523 [inline] compat_SyS_getsockopt net/compat.c:506 [inline] C_SYSC_socketcall net/compat.c:857 [inline] compat_SyS_socketcall+0xe74/0x17c0 net/compat.c:788 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline] do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f63c99 RSP: 002b:000000000844e340 EFLAGS: 00000206 ORIG_RAX: 0000000000000066 RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000844e35c RDX: 000000000844e3b4 RSI: 000000000844e3b4 RDI: 000000000844e408 RBP: 000000000811bcb8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: 0f b6 4c 24 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4c 24 1d 01 f0 49 8b 77 10 d3 e8 8d 4f ff 48 85 f6 41 89 4f 18 0f 84 05 01 00 00 <88> 04 0e 41 8b 47 18 85 c0 0f 84 e0 fe ff ff 49 8b 4e 40 4d 8d RIP: slab_put_obj mm/slab.c:2613 [inline] RSP: ffff88018c147290 RIP: free_block+0x158/0x280 mm/slab.c:3406 RSP: ffff88018c147290 CR2: ffff8802d676dfc0 ---[ end trace 9bc47594e21b9dac ]---