I can see this issue with node wright-kernel with 4.15.0-73 as well.
[ 13.713166] zswap: loaded using pool lzo/zbud
[ 13.752501] Kernel panic - not syncing: stack-protector: Kernel stack is
corrupted in: ftrace_modify_code+0xb0/0xb0
[ 13.752501]
[ 13.767397] CPU: 49 PID: 770 Comm: modprobe Not tainted 4.15.0-73-generic
#82-Ubuntu
[ 13.776262] Hardware name: Cavium ThunderX CRB/To be filled by O.E.M., BIOS
5.11 12/12/2012
[ 13.785815] Call trace:
[ 13.789466] dump_backtrace+0x0/0x198
[ 13.794364] show_stack+0x24/0x30
[ 13.798936] dump_stack+0x98/0xbc
[ 13.803514] panic+0x128/0x2a4
[ 13.807842] print_tainted+0x0/0xc0
[ 13.812629] ftrace_update_ftrace_func+0x0/0x48
[ 13.818499] ftrace_make_nop+0xf8/0x168
[ 13.823696] ftrace_process_locs+0x310/0x478
[ 13.829344] ftrace_module_init+0x30/0x38
[ 13.834757] load_module+0xff8/0x15f0
[ 13.839836] SyS_finit_module+0x100/0x118
[ 13.845290] el0_svc_naked+0x30/0x34
[ 13.850408] SMP: stopping secondary CPUs
[ 13.855868] Kernel Offset: disabled
[ 13.860862] CPU features: 0x00901108
[ 13.865960] Memory Limit: none
[ 13.870594] ---[ end Kernel panic - not syncing: stack-protector: Kernel
stack is corrupted in: ftrace_modify_code+0xb0/0xb0
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1855059
Title:
[Regression] 4.15.0-73.82 Can not boot ThunderX
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