Date: Sun, 31 Jul 2011 15:46:33 +0200 From: Alex Samorukov <ml@os2.kiev.ua> To: maestro something <maestro82@gmail.com> Cc: rpaulo@freebsd.org, freebsd-stable@freebsd.org Subject: Re: dtrace ustack kernel panic Message-ID: <4E355CB9.5090209@os2.kiev.ua> In-Reply-To: <CAJ_JOqvEmXBTBABhUcJ66=bh9%2B8S%2BC9v30hXxVZiCXuEpGPJ1A@mail.gmail.com> References: <CAJ_JOqvEmXBTBABhUcJ66=bh9%2B8S%2BC9v30hXxVZiCXuEpGPJ1A@mail.gmail.com>
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Hi, I just tried your test on -STABLE + 1 fix from current [1] and got no trap. dtrace: buffer size lowered to 2m CPU ID FUNCTION:NAME 4 42224 accept:return nc accept:return Assertion failed: (dpr != NULL), file /usr/src/cddl/lib/libdtrace/../../../cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c, line 751. Abort (core dumped) Also 1st dtrace was killed as well. I tried 2 times with the same result. Box is amd64. This is bt from gdb: (gdb) bt #0 0x0000000800fa2f9c in thr_kill () from /lib/libc.so.7 #1 0x000000080103f6cb in abort () from /lib/libc.so.7 #2 0x0000000800786758 in dt_proc_lookup () from /lib/libdtrace.so.2 #3 0x00000008007867db in dt_proc_lock () from /lib/libdtrace.so.2 #4 0x00000008007a5bcb in dt_print_ustack () from /lib/libdtrace.so.2 #5 0x00000008007a8504 in dt_print_agg () from /lib/libdtrace.so.2 #6 0x00000008007a88ca in dtrace_consume () from /lib/libdtrace.so.2 #7 0x000000080077e1a2 in dtrace_work () from /lib/libdtrace.so.2 #8 0x00000000004044ba in ?? () #9 0x000000000040222e in ?? () [skip] [1] http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/159064 On 07/26/2011 03:20 AM, maestro something wrote: > Hi, > > when using the ustack action on the latest FreeBSD8.2 i386 the kernel > panics.
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