TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access kasan: CONFIG_KASAN_INLINE enabled general protection fault: 0000 [#1] SMP KASAN kasan: GPF could be caused by NULL-ptr deref or user memory access CPU: 0 PID: 6498 Comm: syz-executor3 Not tainted 4.18.0-rc8+ #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:smc_ioctl+0x84c/0xd90 net/smc/af_smc.c:1582 Code: 48 c1 e9 03 80 3c 11 00 0f 85 e8 04 00 00 4c 8b bb a0 04 00 00 48 ba 00 00 00 00 00 fc ff df 49 8d 7f 20 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 55 04 00 00 49 8d 7e 02 41 RSP: 0018:ffff8801c9eff6d8 EFLAGS: 00010202 RAX: ffff8801c9eff758 RBX: ffff8801a9634880 RCX: 0000000000000004 RDX: dffffc0000000000 RSI: 1ffff100393dfeeb RDI: 0000000000000020 RBP: ffff8801c9eff940 R08: ffffed00393dfeec R09: ffffed00393dfeeb R10: ffffed00393dfeeb R11: ffff8801c9eff75f R12: 1ffff100393dfedf R13: 0000000020000100 R14: ffff8801c9eff718 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801db000000(0063) knlGS:00000000f7f5eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001afb4e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sock_do_ioctl+0xe4/0x3e0 net/socket.c:970 compat_sock_ioctl_trans net/socket.c:3201 [inline] compat_sock_ioctl+0x97f/0x1f90 net/socket.c:3226 __do_compat_sys_ioctl fs/compat_ioctl.c:1459 [inline] __se_compat_sys_ioctl fs/compat_ioctl.c:1405 [inline] __ia32_compat_sys_ioctl+0x221/0x640 fs/compat_ioctl.c:1405 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f83cb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f7f5e0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000008905 RDX: 0000000020000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) general protection fault: 0000 [#2] SMP KASAN ---[ end trace 4be56b18831123d6 ]--- CPU: 1 PID: 6494 Comm: syz-executor6 Tainted: G D 4.18.0-rc8+ #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:smc_ioctl+0x84c/0xd90 net/smc/af_smc.c:1582 Code: RIP: 0010:smc_ioctl+0x84c/0xd90 net/smc/af_smc.c:1582 48 c1 e9 03 80 3c 11 00 Code: 0f 85 e8 04 00 00 4c 48 8b bb a0 04 00 00 48 c1 ba 00 00 00 00 00 fc e9 ff df 49 8d 7f 20 48 03 89 f9 48 c1 e9 03 80 <0f> b6 14 11 84 d2 74 3c 09 80 fa 03 0f 8e 55 11 04 00 00 49 8d 7e 02 00 41 RSP: 0018:ffff8801b43d76d8 EFLAGS: 00010202 RAX: ffff8801b43d7758 RBX: ffff8801a96350c0 RCX: 0000000000000004 RDX: dffffc0000000000 RSI: 1ffff1003687aeeb RDI: 0000000000000020 0f RBP: ffff8801b43d7940 R08: ffffed003687aeec R09: ffffed003687aeeb R10: ffffed003687aeeb R11: ffff8801b43d775f R12: 1ffff1003687aedf R13: 0000000020000100 R14: ffff8801b43d7718 R15: 0000000000000000 85 FS: 0000000000000000(0000) GS:ffff8801db100000(0063) knlGS:00000000f7f7bb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000639148 CR3: 00000001d8404000 CR4: 00000000001406e0 e8 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 04 00 sock_do_ioctl+0xe4/0x3e0 net/socket.c:970 00 4c compat_sock_ioctl_trans net/socket.c:3201 [inline] compat_sock_ioctl+0x97f/0x1f90 net/socket.c:3226 8b bb a0 04 00 00 __do_compat_sys_ioctl fs/compat_ioctl.c:1459 [inline] __se_compat_sys_ioctl fs/compat_ioctl.c:1405 [inline] __ia32_compat_sys_ioctl+0x221/0x640 fs/compat_ioctl.c:1405 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 48 ba 00 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 00 RIP: 0023:0xf7fa0cb9 Code: 55 00 08 8b 88 64 cd ff 00 ff 8b 98 68 cd ff 00 ff 89 c8 85 d2 74 02 fc 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 ff 51 52 55 89 e5 0f 34 cd df 80 <5d> 5a 59 c3 90 90 49 90 90 eb 0d 90 90 90 8d 90 90 90 90 90 90 7f 90 90 90 RSP: 002b:00000000f7f7b0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 20 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000008905 RDX: 0000000020000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 48 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: 89 Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 4be56b18831123d7 ]--- f9 RIP: 0010:smc_ioctl+0x84c/0xd90 net/smc/af_smc.c:1582 48 Code: c1 48 e9 c1 03 e9 <0f> 03 b6 80 14 3c 11 11 84 00 d2 0f 74 85 09 e8 80 04 fa 00 03 00 0f 4c 8e 8b 55 bb 04 a0 00 04 00 00 49 00 8d 48 7e ba 02 00 41 00 00 RSP: 0018:ffff8801c9eff6d8 EFLAGS: 00010202 00 00 RAX: ffff8801c9eff758 RBX: ffff8801a9634880 RCX: 0000000000000004 fc RDX: dffffc0000000000 RSI: 1ffff100393dfeeb RDI: 0000000000000020 ff RBP: ffff8801c9eff940 R08: ffffed00393dfeec R09: ffffed00393dfeeb df R10: ffffed00393dfeeb R11: ffff8801c9eff75f R12: 1ffff100393dfedf 49 R13: 0000000020000100 R14: ffff8801c9eff718 R15: 0000000000000000 8d 7f FS: 0000000000000000(0000) GS:ffff8801db000000(0063) knlGS:00000000f7f5eb40 20 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 48 CR2: ffffffffff600400 CR3: 00000001afb4e000 CR4: 00000000001406f0 89 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 f9 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 48