kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN CPU: 0 PID: 6518 Comm: modprobe Not tainted 4.18.0-next-20180813+ #37 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline] RIP: 0010:sigio_perm fs/fcntl.c:715 [inline] RIP: 0010:send_sigurg_to_task+0xf5/0x4d0 fs/fcntl.c:810 Code: 61 af b1 ff 45 84 f6 0f 84 52 03 00 00 e8 83 ae b1 ff 49 8d bf 58 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 91 03 00 00 48 8d 43 c0 4d 8b b7 58 06 00 00 48 RSP: 0000:ffff8801db006c18 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801db006c88 RCX: ffffffff81cae2d0 RDX: 00000000000000cb RSI: ffffffff81cadf6d RDI: 0000000000000658 RBP: ffff8801db006cb0 R08: ffff8801b7b48100 R09: ffffed003b6046d6 R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 1ffff1003b600d85 R13: ffff8801b4e91948 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa0c65d2130 CR3: 00000001b55ac000 CR4: 00000000001406f0 Call Trace: send_sigurg+0x342/0x480 fs/fcntl.c:833 sk_send_sigurg+0xd2/0x3d0 net/core/sock.c:2731 tcp_check_urg net/ipv4/tcp_input.c:5266 [inline] tcp_urg+0x3c3/0xba0 net/ipv4/tcp_input.c:5307 tcp_rcv_established+0xd45/0x2130 net/ipv4/tcp_input.c:5637 tcp_v4_do_rcv+0x635/0x8f0 net/ipv4/tcp_ipv4.c:1532 tcp_v4_rcv+0x2ff9/0x3a90 net/ipv4/tcp_ipv4.c:1824 ip_local_deliver_finish+0x2eb/0xda0 net/ipv4/ip_input.c:215 NF_HOOK include/linux/netfilter.h:287 [inline] ip_local_deliver+0x1e9/0x750 net/ipv4/ip_input.c:256 dst_input include/net/dst.h:450 [inline] ip_rcv_finish+0x1f9/0x300 net/ipv4/ip_input.c:415 NF_HOOK include/linux/netfilter.h:287 [inline] ip_rcv+0xed/0x610 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x14d/0x200 net/core/dev.c:4892 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:5002 process_backlog+0x219/0x760 net/core/dev.c:5808 napi_poll net/core/dev.c:6228 [inline] net_rx_action+0x799/0x1900 net/core/dev.c:6294 __do_softirq+0x2e8/0xa6d kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x1d4/0x210 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:527 [inline] smp_apic_timer_interrupt+0x186/0x690 arch/x86/kernel/apic/apic.c:1055 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:867 RIP: 0010:__write_once_size include/linux/compiler.h:215 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4b/0x50 kernel/kcov.c:109 Code: 90 88 12 00 00 83 fa 02 75 20 48 8b 88 90 12 00 00 8b 80 8c 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 <5d> c3 0f 1f 00 55 40 0f b6 d6 40 0f b6 f7 31 ff 48 89 e5 48 8b 4d RSP: 0000:ffff88018eebf980 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801b7b48100 RBX: 1ffff10031dd7f32 RCX: ffffffff81ada587 RDX: 0000000000000000 RSI: ffffffff81ac3374 RDI: 00000001b04c7067 RBP: ffff88018eebf980 R08: ffff8801b7b48100 R09: ffffed003b6046d6 R10: 0000000000000003 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88018eebf9f0 R14: 00000001b04c7067 R15: 0400000000000000 pud_val+0x64/0x100 arch/x86/include/asm/paravirt.h:534 pud_devmap arch/x86/include/asm/pgtable.h:257 [inline] __handle_mm_fault+0x9ef/0x4470 mm/memory.c:4049 handle_mm_fault+0x53e/0xc80 mm/memory.c:4134 __do_page_fault+0x620/0xe50 arch/x86/mm/fault.c:1395 do_page_fault+0xf6/0x7a4 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1164 RIP: 0033:0x7fa0c63c5c57 Code: 48 83 ec 18 48 8b 07 48 89 3d dd b1 20 00 48 83 c7 08 48 89 3d 82 af 20 00 89 05 5c b1 20 00 48 98 48 8d 54 c7 08 48 83 3a 00 <48> 89 15 d2 c4 20 00 74 0a 48 83 c2 08 48 83 3a 00 75 f6 48 8d 35 RSP: 002b:00007ffff0683370 EFLAGS: 00010206 RAX: 0000000000000004 RBX: 00007ffff0683420 RCX: 00007fa0c63c9c53 RDX: 00007ffff0683450 RSI: 00007fa0c63b34b0 RDI: 00007ffff0683428 RBP: 00007fa0c63b34b0 R08: 0000000000000002 R09: 0000006bec39a01e R10: 000000006fffff6e R11: 000000006ffffeff R12: 00007fa0c63b1a78 R13: 00007fa0c63b1000 R14: 00007fa0c63b1a78 R15: 00007fa0c63b1380 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 610e70fa986b5b22 ]--- RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline] RIP: 0010:sigio_perm fs/fcntl.c:715 [inline] RIP: 0010:send_sigurg_to_task+0xf5/0x4d0 fs/fcntl.c:810 Code: 61 af b1 ff 45 84 f6 0f 84 52 03 00 00 e8 83 ae b1 ff 49 8d bf 58 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 91 03 00 00 48 8d 43 c0 4d 8b b7 58 06 00 00 48 RSP: 0000:ffff8801db006c18 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801db006c88 RCX: ffffffff81cae2d0 RDX: 00000000000000cb RSI: ffffffff81cadf6d RDI: 0000000000000658 RBP: ffff8801db006cb0 R08: ffff8801b7b48100 R09: ffffed003b6046d6 R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 1ffff1003b600d85 R13: ffff8801b4e91948 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa0c65d2130 CR3: 00000001b55ac000 CR4: 00000000001406f0