https://devzone.nordicsemi.com/f/nordic-q-a/78107/thingy91-stuck-in-boot-loopHi, I&#39;m trying to use Zephyr&#39;s &#39;http_client&#39; library in Asset Tracker V2. I have included &#39;net/http_client.h&#39; in main.c and have set &#39;CONFIG_HTTP_CLIENT=y&#39; in prj.conf. If I make a call to any function that would make linker to actually link HTTP_CLIENTen-USTelligent Community 13Mon, 02 Aug 2021 00:58:20 GMThttps://devzone.nordicsemi.com/thread/322770?ContentTypeID=1Mon, 02 Aug 2021 00:58:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c7958dd0-fa6d-4eef-ac3d-a6b0fc634fd7ibiglari<p>Did a little bit of digging. Turns out I hadn&#39;t buried my code deep enough and it was being executed via the event handler, leading to a Stack Overflow. Totally unrelated to the linked library.</p> <p>[00:00:10.245,574] &lt;inf&gt; event_manager: APP_EVT_START</p> <pre>[00:00:10.251,098] &lt;err&gt; os: ***** USAGE FAULT *****<br />[00:00:10.256,683] &lt;err&gt; os:&nbsp;&nbsp; Stack overflow (context area not valid)<br />[00:00:10.263,916] &lt;err&gt; os: r0/a1:&nbsp; 0x2001b310&nbsp; r1/a2:&nbsp; 0xe000ed00&nbsp; r2/a3:&nbsp; 0x00052030<br />[00:00:10.272,583] &lt;err&gt; os: r3/a4:&nbsp; 0x0001bcd5 r12/ip:&nbsp; 0x0000a000 r14/lr:&nbsp; 0x0002548d<br />[00:00:10.281,250] &lt;err&gt; os:&nbsp; xpsr:&nbsp; 0x21000000<br />[00:00:10.286,468] &lt;err&gt; os: s[ 0]:&nbsp; 0x00000000&nbsp; s[ 1]:&nbsp; 0x00000000&nbsp; s[ 2]:&nbsp; 0x00000000&nbsp; s[ 3]:&nbsp; 0x00000000<br />[00:00:10.296,905] &lt;err&gt; os: s[ 4]:&nbsp; 0x00000000&nbsp; s[ 5]:&nbsp; 0x00000000&nbsp; s[ 6]:&nbsp; 0x00000000&nbsp; s[ 7]:&nbsp; 0x00000000<br />[00:00:10.307,312] &lt;err&gt; os: s[ 8]:&nbsp; 0xffffffff&nbsp; s[ 9]:&nbsp; 0xffffffff&nbsp; s[10]:&nbsp; 0xffffffff&nbsp; s[11]:&nbsp; 0xffffffff<br />[00:00:10.317,749] &lt;err&gt; os: s[12]:&nbsp; 0x00000000&nbsp; s[13]:&nbsp; 0xffffffff&nbsp; s[14]:&nbsp; 0xffffffff&nbsp; s[15]:&nbsp; 0x00000000<br />[00:00:10.328,155] &lt;err&gt; os: fpscr:&nbsp; 0x01286002<br />[00:00:10.333,374] &lt;err&gt; os: Faulting instruction address (r15/pc): 0x0001bcd8<br />[00:00:10.341,278] &lt;err&gt; os: &gt;&gt;&gt; ZEPHYR FATAL ERROR 2: Stack overflow on CPU 0<br />[00:00:10.349,182] &lt;err&gt; os: Current thread: 0x20019278 (unknown)<br /><br /></pre> <p>Increased events stack size and problem was resolved.</p><div style="clear:both;"></div>