There also was some case of a different panic which looked like below:
[ 16.191583] BUG: unable to handle kernel NULL pointer dereference at 0000000000000148 [ 16.201096] IP: [<ffffffff810a69f7>] check_preempt_wakeup+0x137/0x270 [ 16.208349] PGD 0 [ 16.211201] Oops: 0000 [#1] SMP [ 16.214877] Modules linked in: btrfs xor raid6_pq libcrc32c crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd igb ixgbe i2c_algo_bit ahci libahci dca ptp pps_core mdio megaraid_sas wmi [ 16.238385] CPU: 0 PID: 1 Comm: init Not tainted 3.13.0-88-generic #135-Ubuntu [ 16.246509] Hardware name: Dell Inc. PowerEdge R630/0CNCJW, BIOS 1.0.4 08/28/2014 [ 16.254918] task: ffff883fd26b8000 ti: ffff881fd2aac000 task.ti: ffff881fd2aac000 [ 16.263327] RIP: 0010:[<ffffffff810a69f7>] [<ffffffff810a69f7>] check_preempt_wakeup+0x137/0x270 [ 16.273317] RSP: 0018:ffff881fd2aad9e8 EFLAGS: 00010087 [ 16.279280] RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000 [ 16.287281] RDX: 0000000000000002 RSI: ffff881fce08b000 RDI: ffff881fff413200 [ 16.295283] RBP: ffff881fd2aada20 R08: 0000000000000000 R09: 0000000000000000 [ 16.303284] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 16.311285] R13: ffff883fd26b8000 R14: ffff881fff413180 R15: 0000000000000001 [ 16.319292] FS: 00007fce8b255840(0000) GS:ffff881fff400000(0000) knlGS:0000000000000000 [ 16.328379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.334827] CR2: 0000000000000148 CR3: 0000001fd0fb7000 CR4: 00000000001407f0 [ 16.342833] Stack: [ 16.345099] ffff881fd2aada10 ffffffff8109fde5 ffff881fff413180 ffff881fce08b000 [ 16.353487] ffff881fff413180 0000000000000001 0000000000000000 ffff881fd2aada38 [ 16.361884] ffffffff8109aa25 ffff881fce08b000 ffff881fd2aada60 ffffffff8109aa59 [ 16.370276] Call Trace: [ 16.373045] [<ffffffff8109fde5>] ? sched_clock_cpu+0xb5/0x100 [ 16.379606] [<ffffffff8109aa25>] check_preempt_curr+0x85/0xa0 [ 16.386154] [<ffffffff8109aa59>] ttwu_do_wakeup+0x19/0xf0 [ 16.392317] [<ffffffff8109abdd>] ttwu_do_activate.constprop.75+0x5d/0x70 [ 16.399935] [<ffffffff8109d172>] try_to_wake_up+0x1d2/0x2c0 [ 16.406287] [<ffffffff8109d2b2>] default_wake_function+0x12/0x20 [ 16.413135] [<ffffffff811d5386>] pollwake+0x66/0x70 [ 16.418715] [<ffffffff8109d2a0>] ? wake_up_state+0x20/0x20 [ 16.424982] [<ffffffff810ad398>] __wake_up_common+0x58/0x90 [ 16.431335] [<ffffffff810ad945>] __wake_up_sync_key+0x45/0x60 [ 16.437890] [<ffffffff816165fa>] sock_def_readable+0x3a/0x70 [ 16.444346] [<ffffffff816c42e1>] unix_stream_sendmsg+0x1f1/0x400 [ 16.451189] [<ffffffff816139ab>] sock_sendmsg+0x8b/0xc0 [ 16.457163] [<ffffffff811524f3>] ? unlock_page+0x23/0x30 [ 16.463237] [<ffffffff8117afd2>] ? do_wp_page+0x392/0x7b0 [ 16.469399] [<ffffffff81613db9>] ___sys_sendmsg+0x389/0x3a0 [ 16.475763] [<ffffffff81735b44>] ? __do_page_fault+0x204/0x560 [ 16.482411] [<ffffffff811d7eec>] ? __dentry_kill+0x15c/0x1e0 [ 16.488866] [<ffffffff811d801d>] ? dput+0xad/0x180 [ 16.494358] [<ffffffff811e13e4>] ? mntput+0x24/0x40 [ 16.499942] [<ffffffff811c2cfe>] ? __fput+0x17e/0x260 [ 16.505713] [<ffffffff81614ba2>] __sys_sendmsg+0x42/0x80 [ 16.511782] [<ffffffff81614bf2>] SyS_sendmsg+0x12/0x20 [ 16.517659] [<ffffffff8173a4dd>] system_call_fastpath+0x1a/0x1f [ 16.524396] Code: 00 00 85 ff 0f 84 37 ff ff ff 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 00 48 8b 9b 40 01 00 00 4d 8b a4 24 40 01 00 00 <48> 8b bb 48 01 00 00 49 3b bc 24 48 01 00 00 75 e0 44 89 45 d0 [ 16.546779] RIP [<ffffffff810a69f7>] check_preempt_wakeup+0x137/0x270 [ 16.554113] RSP <ffff881fd2aad9e8> [ 16.558035] CR2: 0000000000000148 [ 16.561769] ---[ end trace d66b8aa0c23f3c89 ]---
There also was some case of a different panic which looked like below:
[ 16.191583] BUG: unable to handle kernel NULL pointer dereference at 0000000000000148 9f7>] check_preempt_ wakeup+ 0x137/0x270 ffffffff810a69f 7>] [<ffffffff810a6 9f7>] check_preempt_ wakeup+ 0x137/0x270 aad9e8 EFLAGS: 00010087 0(0000) GS:ffff881fff40 0000(0000) knlGS:000000000 0000000 de5>] ? sched_clock_ cpu+0xb5/ 0x100 a25>] check_preempt_ curr+0x85/ 0xa0 a59>] ttwu_do_ wakeup+ 0x19/0xf0 bdd>] ttwu_do_ activate. constprop. 75+0x5d/ 0x70 172>] try_to_ wake_up+ 0x1d2/0x2c0 2b2>] default_ wake_function+ 0x12/0x20 386>] pollwake+0x66/0x70 2a0>] ? wake_up_ state+0x20/ 0x20 398>] __wake_ up_common+ 0x58/0x90 945>] __wake_ up_sync_ key+0x45/ 0x60 5fa>] sock_def_ readable+ 0x3a/0x70 2e1>] unix_stream_ sendmsg+ 0x1f1/0x400 9ab>] sock_sendmsg+ 0x8b/0xc0 4f3>] ? unlock_ page+0x23/ 0x30 fd2>] ? do_wp_page+ 0x392/0x7b0 db9>] ___sys_ sendmsg+ 0x389/0x3a0 b44>] ? __do_page_ fault+0x204/ 0x560 eec>] ? __dentry_ kill+0x15c/ 0x1e0 01d>] ? dput+0xad/0x180 3e4>] ? mntput+0x24/0x40 cfe>] ? __fput+0x17e/0x260 ba2>] __sys_sendmsg+ 0x42/0x80 bf2>] SyS_sendmsg+ 0x12/0x20 4dd>] system_ call_fastpath+ 0x1a/0x1f 9f7>] check_preempt_ wakeup+ 0x137/0x270
[ 16.201096] IP: [<ffffffff810a6
[ 16.208349] PGD 0
[ 16.211201] Oops: 0000 [#1] SMP
[ 16.214877] Modules linked in: btrfs xor raid6_pq libcrc32c crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd igb ixgbe i2c_algo_bit ahci libahci dca ptp pps_core mdio megaraid_sas wmi
[ 16.238385] CPU: 0 PID: 1 Comm: init Not tainted 3.13.0-88-generic #135-Ubuntu
[ 16.246509] Hardware name: Dell Inc. PowerEdge R630/0CNCJW, BIOS 1.0.4 08/28/2014
[ 16.254918] task: ffff883fd26b8000 ti: ffff881fd2aac000 task.ti: ffff881fd2aac000
[ 16.263327] RIP: 0010:[<
[ 16.273317] RSP: 0018:ffff881fd2
[ 16.279280] RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000
[ 16.287281] RDX: 0000000000000002 RSI: ffff881fce08b000 RDI: ffff881fff413200
[ 16.295283] RBP: ffff881fd2aada20 R08: 0000000000000000 R09: 0000000000000000
[ 16.303284] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 16.311285] R13: ffff883fd26b8000 R14: ffff881fff413180 R15: 0000000000000001
[ 16.319292] FS: 00007fce8b25584
[ 16.328379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 16.334827] CR2: 0000000000000148 CR3: 0000001fd0fb7000 CR4: 00000000001407f0
[ 16.342833] Stack:
[ 16.345099] ffff881fd2aada10 ffffffff8109fde5 ffff881fff413180 ffff881fce08b000
[ 16.353487] ffff881fff413180 0000000000000001 0000000000000000 ffff881fd2aada38
[ 16.361884] ffffffff8109aa25 ffff881fce08b000 ffff881fd2aada60 ffffffff8109aa59
[ 16.370276] Call Trace:
[ 16.373045] [<ffffffff8109f
[ 16.379606] [<ffffffff8109a
[ 16.386154] [<ffffffff8109a
[ 16.392317] [<ffffffff8109a
[ 16.399935] [<ffffffff8109d
[ 16.406287] [<ffffffff8109d
[ 16.413135] [<ffffffff811d5
[ 16.418715] [<ffffffff8109d
[ 16.424982] [<ffffffff810ad
[ 16.431335] [<ffffffff810ad
[ 16.437890] [<ffffffff81616
[ 16.444346] [<ffffffff816c4
[ 16.451189] [<ffffffff81613
[ 16.457163] [<ffffffff81152
[ 16.463237] [<ffffffff8117a
[ 16.469399] [<ffffffff81613
[ 16.475763] [<ffffffff81735
[ 16.482411] [<ffffffff811d7
[ 16.488866] [<ffffffff811d8
[ 16.494358] [<ffffffff811e1
[ 16.499942] [<ffffffff811c2
[ 16.505713] [<ffffffff81614
[ 16.511782] [<ffffffff81614
[ 16.517659] [<ffffffff8173a
[ 16.524396] Code: 00 00 85 ff 0f 84 37 ff ff ff 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 00 48 8b 9b 40 01 00 00 4d 8b a4 24 40 01 00 00 <48> 8b bb 48 01 00 00 49 3b bc 24 48 01 00 00 75 e0 44 89 45 d0
[ 16.546779] RIP [<ffffffff810a6
[ 16.554113] RSP <ffff881fd2aad9e8>
[ 16.558035] CR2: 0000000000000148
[ 16.561769] ---[ end trace d66b8aa0c23f3c89 ]---