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Date:      Tue, 23 Feb 2016 22:46:27 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-threads@FreeBSD.org
Subject:   [Bug 204426] Processes terminating cannot access memory
Message-ID:  <bug-204426-16-c8yq5V8P5Q@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-204426-16@https.bugs.freebsd.org/bugzilla/>
References:  <bug-204426-16@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D204426

--- Comment #50 from Robert Blayzor <rblayzor@inoc.net> ---
DIfferent process, similar crash... core file did dump. Note, the "amd" mou=
nt
you see is just the machine I complied the binaries (buildworld) on. No auto
mounter is used on the diskless boot VM's.


pid 63755 (managesieve-login), uid 0: exited on signal 11 (core dumped)


#0  memset () at
/.amd_mnt/juno/pub/FreeBSD/10-STABLE/lib/libc/amd64/string/memset.S:51
51      /.amd_mnt/juno/pub/FreeBSD/10-STABLE/lib/libc/amd64/string/memset.S=
: No
such file or directory.
        in /.amd_mnt/juno/pub/FreeBSD/10-STABLE/lib/libc/amd64/string/memse=
t.S
(gdb) bt full
#0  memset () at
/.amd_mnt/juno/pub/FreeBSD/10-STABLE/lib/libc/amd64/string/memset.S:51
No locals.
#1  0x00000000106189e0 in map_object (fd=3D9, path=3D0x1062a260 "/lib/libc.=
so.7",
sb=3D0x7fffffffd920)
    at /.amd_mnt/juno/pub/FreeBSD/10-STABLE/libexec/rtld-elf/map_object.c:2=
42
        phsize =3D <value optimized out>
        stack_flags =3D Cannot access memory at address 0x7
Current language:  auto; currently asm
(gdb) x/i $rip
0x1061c524 <memset+68>: rep stos %rax,%es:(%rdi)
(gdb) info registers
rax            0x0      0
rbx            0x1      1
rcx            0x4a     74
rdx            0x0      0
rsi            0x0      0
rdi            0x11787db0       293109168
rbp            0x7fffffffd8f0   0x7fffffffd8f0
rsp            0x7fffffffd7a8   0x7fffffffd7a8
r8             0x250    592
r9             0xfffffe00945fd6b8       -2196533946696
r10            0x0      0
r11            0x11787db0       293109168
r12            0x9      9
r13            0x1063a000       274964480
r14            0x1062a260       274899552
r15            0x7fffffffd920   140737488345376
rip            0x1061c524       0x1061c524 <memset+68>
eflags         0x10202  66050
cs             0x43     67
ss             0x3b     59
ds             0x0      0
es             0x0      0
fs             0x0      0
gs             0x0      0


procstat -v managesieve-login.core
  PID              START                END PRT  RES PRES REF SHD   FL TP P=
ATH
63755           0x400000           0x40b000 r-x    7    8   1   0 CN-- vn
/usr/local/libexec/dovecot/managesieve-login
63755           0x60b000           0x60c000 rw-    1    1   1   0 ---- df
63755         0x1060b000         0x10629000 r-x   30   30  32   0 CN-- vn
/libexec/ld-elf.so.1
63755         0x10629000         0x1063a000 rw-   11   11   1   0 ---- df
63755         0x1063a000         0x1063b000 r--    1  387  64  31 CN-- vn
/lib/libc.so.7
63755         0x10828000         0x1082a000 rw-    2    2   1   0 ---- df
63755         0x1082a000         0x1084b000 r-x   27   28  18   9 CN-- vn
/usr/local/lib/dovecot/libdovecot-login.so.0.0.0
63755         0x1084b000         0x10a4a000 ---    0    0   1   0 ---- df
63755         0x10a4a000         0x10a4c000 rw-    2    0   1   0 C--- vn
/usr/local/lib/dovecot/libdovecot-login.so.0.0.0
63755         0x10a4c000         0x10aaf000 r-x   80   90  28  14 CN-- vn
/usr/lib/libssl.so.7
63755         0x10aaf000         0x10caf000 ---    0    0   1   0 ---- df
63755         0x10caf000         0x10cb9000 rw-   10    0   1   0 C--- vn
/usr/lib/libssl.so.7
63755         0x10cb9000         0x10e86000 r-x  461  501  30  15 CN-- vn
/lib/libcrypto.so.7
63755         0x10e86000         0x11086000 ---    0    0   1   0 ---- df
63755         0x11086000         0x110ae000 rw-   40    0   1   0 C--- vn
/lib/libcrypto.so.7
63755         0x110ae000         0x110b0000 rw-    0    0   0   0 ---- --
63755         0x110b0000         0x111fd000 r-x  213  219  36  18 CN-- vn
/usr/local/lib/dovecot/libdovecot.so.0.0.0
63755         0x111fd000         0x113fc000 ---    0    0   1   0 ---- df
63755         0x113fc000         0x11403000 rw-    7    0   1   0 C--- vn
/usr/local/lib/dovecot/libdovecot.so.0.0.0
63755         0x11403000         0x11405000 rw-    0    0   0   0 ---- --
63755         0x11405000         0x1157d000 r-x  376  387  64  31 CN-- vn
/lib/libc.so.7
63755         0x1157d000         0x1177c000 ---    0    0   2   0 ---- df
63755         0x1177c000         0x11788000 rw-   12    0   1   0 C--- vn
/lib/libc.so.7
63755         0x11788000         0x117b2000 ---    0    0   2   0 ---- df
63755     0x7ffffffdf000     0x7ffffffff000 rw-    3    3   1   0 ---D df
63755     0x7ffffffff000     0x800000000000 r-x    1    1  34   0 ---- ph

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