[Bug 3417] New: Crash of sshd with exit code 6 SIGABRT

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3417

            Bug ID: 3417
           Summary: Crash of sshd with exit code 6 SIGABRT
           Product: Portable OpenSSH
           Version: 8.0p1
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: critical
          Priority: P5
         Component: sshd
          Assignee: unassigned-bugs at mindrot.org
          Reporter: narcislachausse at gmail.com

Hello, 

I am currently using the v8.0p1 openssh version and during automate
testing of the system found a crash of sshd with the occurence: 4 times
in 460 cycles.

The following stacktrace has been extracted:
=======================================================================
Core was generated by `sshd: [net]                                     
         '.
Program terminated with signal SIGABRT, Aborted.

#0  __GI_raise (sig=sig at entry=6) at
../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0, 0, 96, 67, 101, 213, 243, 129, 67, 152, 37, 
            232, 91, 226, 87, 184, 10, 116, 186, 106, 98, 129, 131,
101, 
            21, 199, 54, 106, 25, 74, 243, 116}}
        pid = <optimized out>
        tid = <optimized out>
        ret = <optimized out>

#1  0xb6bf2e74 in __GI_abort () at abort.c:79
        save_stage = 1
        act =  
{__sigaction_handler = {sa_handler = 0x152, 
            sa_sigaction = 0x152}, sa_mask = {__val = {3067101776, 7,
0, 
              344, 3067103204, 61, 2147410092, 91, 43, 360, 110, 
              3070047952, 5, 43, 0, 335, 0, 124, 0, 119, 1311297405,
44, 
              2136970460, 44, 2136970460, 2147483400, 2147445960, 
              3066275400, 2147445960, 3066258516, 253, 273}}, 
          sa_flags = 2147483400, sa_restorer = 0x7f5f94dc}
        sigs = {__val = {32, 0 <repeats 31 times>}}

#2  0x7f5f8a94 in __subvsi3 ( 
a=<optimized out>, b=<optimized out>)
    at ../../../libgcc/libgcc2.c:119
        w = <optimized out>

#3  0x7f5f72a4 in strlcpy ()
No symbol table info available.

#4  0x7f5d7494 in xstrdup ()
No symbol table info available.

#5  0x7f5cf884 in match_list ()
No symbol table info available.

#6  0x7f5e35fc in kex_names_cat ()
No symbol table info available.

#7  0x7f5e37cc in kex_assemble_names ()
No symbol table info available.

#8  0x7f592c40 in assemble_algorithms ()
No symbol table info available.

#9  0x7f597fb4 in copy_set_server_options ()
No symbol table info available.

#10 0x7f5ae578 in mm_getpwnamallow ()
No symbol table info available.

#11 0x7f59eaf8 in input_userauth_request ()
No symbol table info available.
=======================================================================

Thank you in advance,
Narcis

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