Bug#954004: systemd-udevd: do_page_fault() type=15 address=0x00000005

[John David Anglin]

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On 2020-03-15 1:31 p.m., Michael Biebl wrote:
> This will need a hppa porter to look into this so adding them to CC
I tried attaching to systemd-udev:

root at atlas:~# gdb /lib/systemd/systemd-udevd 2168
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Reading symbols from /lib/systemd/systemd-udevd...
[...]
_int_malloc (av=0x42b17c20, bytes=4294967295) at malloc.c:3958
3958    malloc.c: No such file or directory.
(gdb) disass 0x42114978-16,0x42114978+16
Dump of assembler code from 0x42114968 to 0x42114988:
   0x42114968:  Cannot access memory at address 0x42114968
(gdb) x/x 0x42114978
0x42114978:     Cannot access memory at address 0x42114978
(gdb) info shared
- From        To          Syms Read   Shared Object Library
0xf83ee8d0  0xf850f2ec  Yes         target:/lib/hppa-linux-gnu/libc.so.6
0xf7ffb8e0  0xf8010940  Yes (*)     target:/usr/lib/hppa-linux-gnu/libkmod.so.2
0xf7bf9670  0xf7bff9bc  Yes (*)     target:/usr/lib/hppa-linux-gnu/libacl.so.1
0xf78021a0  0xf78497e0  Yes (*)     target:/lib/hppa-linux-gnu/libblkid.so.1
0xf73ff3d4  0xf741eed4  Yes (*)     target:/lib/hppa-linux-gnu/libselinux.so.1
0xf73ce750  0xf73e410c  Yes         target:/lib/hppa-linux-gnu/libpthread.so.0
0xf8bcb6c0  0xf8be8854  Yes         target:/lib/ld.so.1
0xf6fcc4a0  0xf6fe960c  Yes (*)     target:/lib/hppa-linux-gnu/liblzma.so.5
0xf6c353e0  0xf6dc24d4  Yes (*)     target:/usr/lib/hppa-linux-gnu/libcrypto.so1
0xf67c9054  0xf67cc280  Yes (*)     target:/usr/lib/hppa-linux-gnu/libattr.so.1
0xf63c9d30  0xf6401d2c  Yes (*)     target:/usr/lib/hppa-linux-gnu/libpcre2-8.s0
0xf5fc908c  0xf5fca800  Yes         target:/lib/hppa-linux-gnu/libdl.so.2
0xf3bcc8dc  0xf3bd4a18  Yes         target:/lib/hppa-linux-gnu/libnss_files.so.2
(*): Shared library is missing debugging information.
(gdb) bt
#0  _int_malloc (av=0x42b17c20, bytes=4294967295) at malloc.c:3958
#1  0x42add524 in cg_kill (controller=0x42aeda18 "_systemd",
    flags=CGROUP_IGNORE_SELF, s=0x0, log_kill=0x0, userdata=0x0,
    sig=<optimized out>, path=0x42b17b18 "") at ../src/basic/cgroup-util.c:325
#2  cg_kill (controller=0x42aeda18 "_systemd", sig=9,
    flags=CGROUP_IGNORE_SELF, s=0x0, log_kill=0x0, userdata=0x0,
    path=0x42b17b18 "") at ../src/basic/cgroup-util.c:325
#3  on_post (s=<optimized out>, userdata=<optimized out>)
    at ../src/udev/udevd.c:1363
#4  on_post (s=<optimized out>, userdata=<optimized out>)
    at ../src/udev/udevd.c:1338
#5  0x42a87140 in getpid_cached () at ../src/basic/process-util.c:1138
#6  0x42aa1854 in sd_event_run (timeout=18446744073709551615, e=0x42b17c20)
    at ../src/libsystemd/sd-event/sd-event.c:3469
#7  sd_event_loop (
/build/gdb-oi2LW0/gdb-9.1/gdb/inline-frame.c:155: internal-error: void inline_f.
A problem internal to GDB has been detected,
further debugging may prove unreliable.

Unfortunately, there doesn't appear to be any code at the location the fault occurred.  So,
I'm not sure this is helpful.

- -- 
John David Anglin  dave.anglin at bell.net
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