<div dir="ltr"><p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><font face="arial, sans-serif">There was a power cycle during the upgrade. </font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><font face="arial, sans-serif">We got following
trace during kernel panic.</font></p>

<p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><span style="font-family:arial,sans-serif;font-size:10.5pt;color:rgb(51,51,51);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">Cannot login after software upgrade – system
initializing message on Portal; on cli login prompt is seen following messages:</span></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><span style="font-size:10.5pt;color:rgb(51,51,51)"><font face="arial, sans-serif"><br></font>
<font face="tahoma, sans-serif"><span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">System crashing due to</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8780.678167] Hardware name: Cisco Systems,
Inc. ENCS5412/K9/ENCS5412/K9, BIOS ENCS54_2.7.020620190951 02/06/2019</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8780.800565] Workqueue: events flush_to_ldisc</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8780.853390] task: ffff9707f4bf30c0 ti:
ffff9707f4448000 task.ti: ffff9707f4448000</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8780.944588] RIP: 0010:[<ffffffff83874b73>]
[<ffffffff83874b73>] uart_write_room+0x13/0x50</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.045274] RSP: 0018:ffff9707f444bc60
EFLAGS: 00010286</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.110468] RAX: 0000000000000800 RBX:
000000000000000a RCX: ffff9707f444bfd8</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.197509] RDX: ffffffff83874b60 RSI:
ffff970ed8206c00 RDI: ffff970ed8205000</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.284540] RBP: ffff9707f444bc70 R08:
ffff970ec1e6ec00 R09: a3c427ffdbc3c000</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.371561] R10: a3c427ffdbc3c000 R11:
0000000000000001 R12: 0000000000000000</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.458579] R13: ffff970ed8205000 R14:
ffff970ed8206c00 R15: ffff970ec1e6ecf6</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.545589] FS: 0000000000000000(0000)
GS:ffff970edf000000(0000) knlGS:0000000000000000</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.644060] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.714429] CR2: 0000000000000150 CR3:
000000085b2be000 CR4: 00000000003607f0</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.801442] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.888437] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8781.975407] Call Trace:</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.006205] [<ffffffff8385c730>]
tty_write_room+0x20/0x30</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.073406] [<ffffffff8385966e>]
process_echoes+0x6e/0x2e0</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.141642] [<ffffffff83b65e92>] ?
mutex_lock+0x12/0x2f</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.206744] [<ffffffff8385c14c>]
n_tty_receive_char+0xd4c/0xe30</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.280188] [<ffffffff8385c3dc>]
n_tty_receive_buf+0x1ac/0x470</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.352569] [<ffffffff8385f1ff>]
flush_to_ldisc+0x10f/0x160</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.421832] [<ffffffff834b9d4f>]
process_one_work+0x17f/0x440</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.493188] [<ffffffff834bade6>]
worker_thread+0x126/0x3c0</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.561412] [<ffffffff834bacc0>] ?
manage_workers.isra.25+0x2a0/0x2a0</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.641074] [<ffffffff834c1c31>]
kthread+0xd1/0xe0</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.700887] [<ffffffff834c1b60>] ?
insert_kthread_work+0x40/0x40</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.775363] [<ffffffff83b74c37>]
ret_from_fork_nospec_begin+0x21/0x21</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.855038] [<ffffffff834c1b60>] ?
insert_kthread_work+0x40/0x40</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8782.929516] Code: 01 00 00 81 e3 ff 0f 00 00
e8 0a 56 2f 00 89 d8 5b 41 5c 5d c3 0f 1f 00 0f 1f 44 00 00 55 48 89 e5 41 54
53 4c 8b a7 18 02 00 00 <49> 8b bc 24 50 01 00 00 e8 50 59 2f 00 41 8b 9c
24 48 01 00 00</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8783.165634] RIP [<ffffffff83874b73>]
uart_write_room+0x13/0x50</span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8783.238184] RSP <ffff9707f444bc60></span><br>
<span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">[ 8783.281471] CR2: 0000000000000150</span></font></span></p>

<p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><span style="font-size:10.5pt;color:rgb(51,51,51);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="tahoma, sans-serif"> </font></span></p>

<p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><span style="font-size:10.5pt;color:rgb(51,51,51);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="arial, sans-serif"> </font></span></p>

<p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><font face="arial, sans-serif"><span style="font-size:10.5pt;color:rgb(51,51,51);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">While going through the list of cases on
centos, we found this similar case - </span><a href="https://bugs.centos.org/view.php?id=14265#history" style="color:rgb(5,99,193)">https://bugs.centos.org/view.php?id=14265#history</a>.
However, there has been no activity on it since long. </font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt"><font face="arial, sans-serif">Can you please help us out
to find out if there is an ongoing fix for it?</font></p></div>