Created attachment 126991 [details] kernel config I can't categorize this problem, but is exist on our multiple installations: [135605.881130] general protection fault: 0000 [#1] SMP [135605.881204] CPU 0 [135605.881267] Pid: 27344, comm: cat Not tainted 3.2.55-supermicro-e3-grsec #1 Supermicro X9SRE/X9SRE-3F/X9SRi/X9SRi-3F/X9SRE/X9SRE-3F/X9SRi/X9SRi-3F [135605.881406] RIP: 0010:[<ffffffff81411919>] [<ffffffff81411919>] ct_seq_show+0x13/0x228 [135605.881534] RSP: 0018:ffff880e0d3d9d48 EFLAGS: 00010296 [135605.881602] RAX: ffffffff815a4b50 RBX: fefefefefefefefe RCX: 0000000000000000 [135605.881728] RDX: ffffffff81842640 RSI: fefefefefefefefe RDI: ffff88101a722240 [135605.881855] RBP: ffff88101a722240 R08: 0000000000000000 R09: ffff880df546def2 [135605.881982] R10: ffff880df546def2 R11: ffff880e84036928 R12: 0000000002405000 [135605.882109] R13: fefefefefefefefe R14: ffff880e0d3d9ee0 R15: fefefefefefefefe [135605.882233] FS: 000003c465da9700(0000) GS:ffff88107fc00000(0000) knlGS:0000000000000000 [135605.882357] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [135605.882425] CR2: 000004000240c000 CR3: 000000000151b000 CR4: 00000000000406f0 [135605.882549] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [135605.882676] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [135605.882802] Process cat (pid: 27344, threadinfo ffff88102080d470, task ffff88102080d040) [135605.882930] Stack: [135605.882994] 0000000000000000 0000000000000001 ffff88101a722240 ffffffff81411906[135605.883127] ffff88101a722240 0000000002405000 0000000000000f2d ffffffff810f8863[135605.883261] ffffffffffff4111 ffffffffffff4111 ffffffffffff4111 0000000000000000 [135605.883394] Call Trace: [135605.883458] [<ffffffff81411906>] ? print_tuple+0x5b/0x5b [135605.883527] [<ffffffff810f8863>] ? seq_read+0x470/0x6ff [135605.883602] [<ffffffff811283d6>] ? proc_reg_read+0x82/0xa1 [135605.883677] [<ffffffff810da5b8>] ? vfs_read+0x10e/0x1e2 [135605.883752] [<ffffffff810da97f>] ? sys_read+0x44/0x7c [135605.883829] [<ffffffff815072d5>] ? system_call_fastpath+0x16/0x1b [135605.883902] Code: 31 d2 85 c0 0f 95 c2 5b 89 d0 5d 41 5c 41 5d 41 5e 48 0f ba 2c 24 3f c3 41 55 49 89 f5 41 54 55 48 89 fd 53 4c 89 eb 48 83 ec 18 <41> 0f b6 45 37 48 6b c0 38 48 83 c0 08 48 29 c3 8b 13 48 63 ca [135605.884259] RIP [<ffffffff81411919>] ct_seq_show+0x13/0x228 [135605.884328] RSP <ffff880e0d3d9d48> [135605.884741] ---[ end trace dab0f4634b88f1e9 ]--- [135605.884852] Kernel panic - not syncing: Fatal exception [135605.973114] Rebooting in 600 seconds..
*** This bug has been marked as a duplicate of bug 68991 ***
#68991 happens at readlink time of /proc/$PID/map_files/... symlinks this one is different.