Re: port-alpha/54307 (Lots of jemalloc assertions in latest -current)

[Rin Okuyama <rokuyama.rk%gmail.com@localhost>]

For alpha, jemalloc seems to work only ifdef JEMALLOC_DEBUG.

If it is defined, everything works fine as far as I can see.
However, otherwise, /bin/sh dumps core when entering multiuser.

With working libc,

ds10# LD_PRELOAD=/lib/libc.so.12.213.orig sh /etc/rc
[1]   Segmentation fault (core dumped) LD_PRELOAD=/lib/libc.so.12.213.orig sh /etc/rc
ds10# gdb sh sh.core
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Reading symbols from sh...
Reading symbols from /usr/libdata/debug//bin/sh.debug...
[New process 1]
Core was generated by `sh'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  bitmap_unset (bit=0, binfo=<optimized out>,
    bitmap=0x3fffdd61b48 <free+984>)
    at /build/src/external/bsd/jemalloc/lib/../include/jemalloc/internal/bitmap.h:345
345             *gp = g;
(gdb) bt
#0  bitmap_unset (bit=0, binfo=<optimized out>,
    bitmap=0x3fffdd61b48 <free+984>)
    at /build/src/external/bsd/jemalloc/lib/../include/jemalloc/internal/bitmap.h:345
#1  arena_slab_reg_dalloc (ptr=<optimized out>,
    slab_data=0x3fffdd61b48 <free+984>, slab=0x3fffdd61b08 <free+920>)
    at /build/src/external/bsd/jemalloc/lib/../dist/src/arena.c:273
#2  arena_dalloc_bin_locked_impl (tsdn=0x3fffdec2010, arena=0x3fffd6009c0,
    slab=0x3fffdd61b08 <free+920>, ptr=<optimized out>, junked=<optimized out>)
    at /build/src/external/bsd/jemalloc/lib/../dist/src/arena.c:1543
#3  0x000003fffdd02ed4 in je_tcache_bin_flush_small (tsd=0x3fffdec2010,
    tcache=<optimized out>, tbin=0x3fffdec2360, binind=16, rem=<optimized out>)
    at /build/src/external/bsd/jemalloc/lib/../dist/src/tcache.c:149
#4  0x000003fffdd61b08 in tcache_dalloc_small (slow_path=false, binind=0,
    ptr=0x3fffdb0de00, tcache=<optimized out>, tsd=<optimized out>)
    at /build/src/external/bsd/jemalloc/lib/../include/jemalloc/internal/tcache_inlines.h:178
#5  arena_dalloc (slow_path=false, alloc_ctx=<synthetic pointer>,
    tcache=<optimized out>, ptr=0x3fffdb0de00, tsdn=<optimized out>)
    at /build/src/external/bsd/jemalloc/lib/../include/jemalloc/internal/arena_inlines_b.h:224
#6  idalloctm (slow_path=false, is_internal=false,
    alloc_ctx=<synthetic pointer>, tcache=<optimized out>, ptr=0x3fffdb0de00,
    tsdn=<optimized out>)
    at /build/src/external/bsd/jemalloc/lib/../include/jemalloc/internal/jemalloc_internal_inlines_c.h:118
#7  ifree (slow_path=false, tcache=<optimized out>, ptr=0x3fffdb0de00,
    tsd=0x3fffdec2010)
    at /build/src/external/bsd/jemalloc/lib/../dist/src/jemalloc.c:2255
#8  free (ptr=0x3fffdb0de00)
    at /build/src/external/bsd/jemalloc/lib/../dist/src/jemalloc.c:2426
#9  0x000000012001c404 in rststackmark (mark=0x1fffff358)
    at /build/src/bin/sh/memalloc.c:198
#10 0x000000012001ba80 in cmdloop (top=<optimized out>)
    at /build/src/bin/sh/main.c:306
#11 0x000000012000b548 in dotcmd (argc=<optimized out>, argv=<optimized out>)
    at /build/src/bin/sh/eval.c:1505
#12 0x000000012000ad10 in evalcommand (cmd=<optimized out>,
    flgs=<optimized out>, backcmd=<optimized out>)
    at /build/src/bin/sh/eval.c:1314
#13 0x0000000120008654 in evaltree (n=0x3fffdb80030, flags=<optimized out>)
    at /build/src/bin/sh/eval.c:357
#14 0x000000012001bbd4 in cmdloop (top=<optimized out>)
    at /build/src/bin/sh/main.c:304
#15 0x0000000120032650 in main (argc=<optimized out>, argv=<optimized out>)
    at /build/src/bin/sh/main.c:246
(gdb)

I have no ideas at the moment...

On 2019/08/11 3:32, John Klos wrote:
> In addition, with DIAGNOSTIC:
>
> [ 2754.6460539] panic: kernel diagnostic assertion "l->l_stat == LSSTOP || l->l_stat == LSSUSPENDED" failed: file "/usr/current/src/sys/kern/kern_sleepq.c", line 128
> [ 2754.6460539] cpu0: Begin traceback...
> [ 2754.6460539] alpha trace requires known PC =eject=
> [ 2754.6460539] cpu0: End traceback...
> [ 2754.6460539] cpu1: shutting down...
> [ 2754.6460539] dumping to dev 4,1 offset 8388607

This may be a different problem. Please file another PR,
if you could reproduce this panic.

Thanks,
rin