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Bug 2054534

Summary:

radiusd in RHEL8.5 crashes with general protection fault in request_done().

Product:

Red Hat Enterprise Linux 8

Reporter:

kyoneyama <kyoneyam>

Component:

freeradius

Assignee:

Antonio Torres <antorres>

Status:

CLOSED NOTABUG

QA Contact:

Filip Dvorak <fdvorak>

Severity:

high

Docs Contact:

Priority:

unspecified

Version:

8.5

CC:

fdvorak, nikolai.kondrashov

Target Milestone:

Flags:

pm-rhel: mirror+

Target Release:

---

Hardware:

x86_64

OS:

Linux

Whiteboard:

Fixed In Version:

Doc Type:

If docs needed, set a value

Doc Text:

Story Points:

---

Clone Of:

Environment:

Last Closed:

2022-06-21 09:46:00 UTC

Type:

Bug

Regression:

---

Mount Type:

---

Documentation:

---

CRM:

Verified Versions:

Category:

---

oVirt Team:

---

RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

---

Target Upstream Version:

Embargoed:

Attachments:

Description	Flags
coredump	none

Description kyoneyama 2022-02-15 07:16:09 UTC

Created attachment 1861150 [details]
coredump

Created attachment 1861150 [details]
coredump

Description of problem:

radiusd crashes with general protection fault(GPF).

  -- messages --
  Feb  8 17:01:32 ips2020-radm1 kernel: traps: radiusd[75686] general protection fault ip:55cfbed09b0b sp:7fdb43ffee50 error:0 in radiusd[55cfbecd1000+6e000]
  Feb  8 17:01:42 ips2020-radm1 systemd[1]: radiusd.service: Main process exited, code=killed, status=11/SEGV
  Feb  8 17:01:42 ips2020-radm1 systemd[1]: radiusd.service: Failed with result 'signal'.

I have debugged and identified the following GPF occurrence point.
I didn't find any similar cases, so it seems to be a new bug.


  # db -c core.1589 radiusd
  :
  :
  (gdb) disas $rip
  Dump of assembler code for function request_done:
     0x000055cfbed09ad0 <+0>:	endbr64 
     0x000055cfbed09ad4 <+4>:	push   %r13
     0x000055cfbed09ad6 <+6>:	push   %r12
     0x000055cfbed09ad8 <+8>:	mov    %esi,%r12d
     0x000055cfbed09adb <+11>:	push   %rbp
     0x000055cfbed09adc <+12>:	push   %rbx
     0x000055cfbed09add <+13>:	mov    %rdi,%rbx
     0x000055cfbed09ae0 <+16>:	sub    $0x38,%rsp
     0x000055cfbed09ae4 <+20>:	mov    %fs:0x28,%rax
     0x000055cfbed09aed <+29>:	mov    %rax,0x28(%rsp)
     0x000055cfbed09af2 <+34>:	xor    %eax,%eax
     0x000055cfbed09af4 <+36>:	lea    -0x2b(%rip),%rax        # 0x55cfbed09ad0 <request_done>
     0x000055cfbed09afb <+43>:	mov    %rax,0x88(%rdi)
     0x000055cfbed09b02 <+50>:	mov    0x18(%rdi),%rax
     0x000055cfbed09b06 <+54>:	test   %rax,%rax
     0x000055cfbed09b09 <+57>:	je     0x55cfbed09b15 <request_done+69>
  => 0x000055cfbed09b0b <+59>:	cmpl   $0x4,0x8(%rax)

  (gdb) bt
  #0  0x000055cfbed09b0b in request_done (request=0x55cfc0d8f250, action=1) at src/main/process.c:652
  #1  0x000055cfbed06482 in request_handler_thread (arg=0x55cfc0ee8500) at src/main/threads.c:826
  #2  0x00007fdb70f1a17a in start_thread (arg=<optimized out>) at pthread_create.c:479
  #3  0x00007fdb707d1dc3 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  (gdb) p/x $rax
  $1 = 0x39332d62352d6366

  (gdb) l
  647	
  648	#ifdef WITH_DETAIL
  649		/*
  650		 *	Tell the detail listener that we're done.
  651		 */
  652		if (request->listener &&
  653		    (request->listener->type == RAD_LISTEN_DETAIL) &&
  654		    (request->simul_max != 1)) {
  655			request->simul_max = 1;
  656			request->listener->send(request->listener,

  (gdb) p *request
  $3 = {number = 520093696, timestamp = 3774629162156647987, data = 0x131e31352d66332d, 
    listener = 0x39332d62352d6366, client = 0x652d62322d36662d, packet = 0x55cfc0d8f030, 
    username = 0xb6abe278, password = 0x0, reply = 0x0, config = 0x55cfc0d8efa0, 
    state_ctx = 0x55cfc0d90f50, state = 0x0, proxy_listener = 0x7fdb725baec0 <_request_free>, 
    proxy = 0x7fdb725c9c6e, proxy_reply = 0x148, home_server = 0x0, home_pool = 0x55cfc0d8ef80, 
    process = 0x55cfbed09ad0 <request_done>, response_delay = {tv_sec = 14319450, tv_usec = 1644307292}, 
    timer_action = FR_ACTION_INVALID, ev = 0x55cfc0d1f0c0, handle = 0x55cfc0cdb180, rcode = 3235442784, 
    module = 0x55cfbed29823 "", component = 0x55cfbed2684c "<core>", delay = -1059523440, 
    master_state = 21967, child_state = REQUEST_RUNNING, child_pid = 140579715413760, root = 0x0, 
    simul_max = 0, simul_count = 0, simul_mpp = 0, priority = RAD_LISTEN_NONE, in_request_hash = false, 
    in_proxy_hash = false, num_proxied_requests = 0, num_proxied_responses = 0, server = 0x0, 
    parent = 0x55cfbed09ad0 <request_done>, log = {func = 0x0, lvl = L_DBG_LVL_OFF, indent = 0 '\000'}, 
    options = 4, coa = 0x55cfc0dc5de0, num_coa_requests = 3201202240}

  (gdb) p *(request->listener)
  Cannot access memory at address 0x39332d62352d6366


- GPF occurs in the request_done() function
- There is a problem request->listener non-accessable variable


Version-Release number of selected component (if applicable):

- Red Hat Enterprise Linux 8.5
- kernel
- freeradius-3.0.20-10.module+el8.5.0+13440+b1b7f3c7.x86_64
- glibc-2.28-164.el8.x86_64


How reproducible:

Sometime reproduce.
This problem is not reproducible.