pavel@localhost:/tmp> gcc semtex.c 
pavel@localhost:/tmp> ./a.out
Message from syslogd@localhost at May 14 21:26:26 ...
 kernel:Oops: 0000 [#1] PREEMPT SMP 
Message from syslogd@localhost at May 14 21:26:26 ...
 kernel:Stack:
Message from syslogd@localhost at May 14 21:26:26 ...
 kernel:Call Trace:
Message from syslogd@localhost at May 14 21:26:26 ...
 kernel:Code: 00 00 00 48 8b 47 18 65 48 8b 14 25 c0 96 00 00 48 83 e0 fe 48 39 c2 75 08 c7 47 28 01 00 00 00 c3 0f 0b 53 48 89 fb 48 83 ec 10 <8b> 17 83 fa 01 74 2d 8d 4a ff 89 d0 f0 0f b1 0f 39 c2 89 c1 75 
Message from syslogd@localhost at May 14 21:26:26 ...
 kernel:CR2: 0000001781642448
Убито
pavel@localhost:/tmp>
# dmesg
BUG: unable to handle kernel paging request at 0000001781642448
IP: [<ffffffff81070ad8>] 0xffffffff81070ad8
PGD 263121067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP 
CPU 0 
Modules linked in: ipt_ECN ipt_REJECT iptable_filter xt_recent iptable_mangle xt_DSCP nvidia(O) sg ohci_hcd
Pid: 3256, comm: a.out Tainted: G           O 3.2.44-rt64 #1 TYAN Computer Corp. S2895/S2895
RIP: 0010:[<ffffffff81070ad8>]  [<ffffffff81070ad8>] 0xffffffff81070ad8
RSP: 0018:ffff880204281e68  EFLAGS: 00010282
RAX: 00000007fffffff8 RBX: 0000001781642448 RCX: 0000000000000000
RDX: ffff88023965b100 RSI: ffffffff81549b00 RDI: 0000001781642448
RBP: 00000000ffffffff R08: ffff880204280000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8802396a33d0
R13: ffff88020a525700 R14: ffff880266c5b780 R15: ffff8802108f7810
FS:  00007fb697b4b700(0000) GS:ffff88027fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000001781642448 CR3: 0000000204002000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process a.out (pid: 3256, threadinfo ffff880204280000, task ffff88023965b100)
Stack:
 ffffffff8157ba08 ffffffff81093d27 0000001781642448 ffffffff81094140
 ffff880265040400 ffffffff8108cc78 ffff88020a525700 ffff880265040400
 ffff8802396a33cc ffffffff8108d967 ffff880265040400 ffffffff8108da96
Call Trace:
 [<ffffffff81093d27>] ? 0xffffffff81093d27
 [<ffffffff81094140>] ? 0xffffffff81094140
 [<ffffffff8108cc78>] ? 0xffffffff8108cc78
 [<ffffffff8108d967>] ? 0xffffffff8108d967
 [<ffffffff8108da96>] ? 0xffffffff8108da96
 [<ffffffff8108dbd0>] ? 0xffffffff8108dbd0
 [<ffffffff810db890>] ? 0xffffffff810db890
 [<ffffffff810d7e8f>] ? 0xffffffff810d7e8f
 [<ffffffff810d7f6e>] ? 0xffffffff810d7f6e
 [<ffffffff81438dfb>] ? 0xffffffff81438dfb
Code: 00 00 00 48 8b 47 18 65 48 8b 14 25 c0 96 00 00 48 83 e0 fe 48 39 c2 75 08 c7 47 28 01 00 00 00 c3 0f 0b 53 48 89 fb 48 83 ec 10 <8b> 17 83 fa 01 74 2d 8d 4a ff 89 d0 f0 0f b1 0f 39 c2 89 c1 75 
RIP  [<ffffffff81070ad8>] 0xffffffff81070ad8
 RSP <ffff880204281e68>
CR2: 0000001781642448
---[ end trace 0000000000000002 ]---

Где рут?