Date: Wed, 2 Jun 2004 17:39:49 +0200 From: Divacky Roman <xdivac02@stud.fit.vutbr.cz> To: Bosko Milekic <bmilekic@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: uipc_socket2.c panic Message-ID: <20040602153948.GA77871@stud.fit.vutbr.cz> In-Reply-To: <20040602151308.GA43008@freefall.freebsd.org> References: <20040602151308.GA43008@freefall.freebsd.org>
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The crash process this way:
one of my ssh connections (always the same out of two) is reseted with
message about incorrect packet lenght (the length is incredibly big
number) then it panics..
I have another bt (from kern_mbuf.c vers. 1.2)
necrophilia NEOLOGISM# gdb -k kernel.debug /var/crash/vmcore.4
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This GDB was configured as "i386-undermydesk-freebsd"...
panic: sbflush: cc 304 || mb 0 || mbcnt 0
panic messages:
---
panic: sbflush: cc 304 || mb 0 || mbcnt 0
at line 891 in file /usr/src/sys/kern/uipc_socket2.c
Debugger("panic")
Dumping 95 MB
16 32 48 64 80
---
Reading symbols from /boot/kernel/if_ep.ko...done.
Loaded symbols for /boot/kernel/if_ep.ko
Reading symbols from /usr/obj/usr/src/sys/NEOLOGISM/modules/usr/src/sys/modules/
elink/elink.ko.debug...done.
Loaded symbols for /usr/obj/usr/src/sys/NEOLOGISM/modules/usr/src/sys/modules/el
ink/elink.ko.debug
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:236
236 dumping++;
(kgdb) bt
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:236
#1 0xc044c975 in db_fncall (dummy1=0, dummy2=0, dummy3=0,
dummy4=0xc70dea40 "`µgÀ¨6jÀ\\ê\rÇ\r") at /usr/src/sys/ddb/db_command.c:551
#2 0xc044c6b2 in db_command (last_cmdp=0xc067ac00, cmd_table=0x0,
aux_cmd_tablep=0xc0650ccc, aux_cmd_tablep_end=0xc0650cd0)
at /usr/src/sys/ddb/db_command.c:348
#3 0xc044c805 in db_command_loop () at /usr/src/sys/ddb/db_command.c:475
#4 0xc044f9b5 in db_trap (type=3, code=0) at /usr/src/sys/ddb/db_trap.c:73
#5 0xc0604a2c in kdb_trap (type=3, code=0, regs=0xc70deb8c)
at /usr/src/sys/i386/i386/db_interface.c:159
#6 0xc061546c in trap (frame=
{tf_fs = -1057947624, tf_es = 16, tf_ds = 16, tf_edi = 1, tf_esi = -106718
9840, tf_ebp = -955388968, tf_isp = -955389000, tf_ebx = 0, tf_edx = 0, tf_ecx =
-1061076992, tf_eax = 18, tf_trapno = 3, tf_err = 0, tf_eip = -1067430684, tf_c
s = 8, tf_eflags = 646, tf_esp = -1067135921, tf_ss = -1067201382})
at /usr/src/sys/i386/i386/trap.c:579
#7 0xc0604ce4 in Debugger (msg=0x0) at machine/cpufunc.h:56
#8 0xc04cdc45 in __panic (file=0xc063f957 "/usr/src/sys/kern/uipc_socket2.c",
line=891, fmt=0xc063f9b0 "sbflush: cc %u || mb %p || mbcnt %u")
at /usr/src/sys/kern/kern_shutdown.c:532
#9 0xc05130f1 in sbflush (sb=0xc70dec5c)
at /usr/src/sys/kern/uipc_socket2.c:891
#10 0xc05127f4 in sbrelease (sb=0xc70dec5c, so=0x0)
at /usr/src/sys/kern/uipc_socket2.c:466
---Type <return> to continue, or q <return> to quit---
#11 0xc0510942 in sorflush (so=0xc0f96c64)
at /usr/src/sys/kern/uipc_socket.c:1238
#12 0xc051084f in soshutdown (so=0xc0f96c64, how=2)
at /usr/src/sys/kern/uipc_socket.c:1207
#13 0xc0515c48 in shutdown (td=0x0, uap=0xc0f96c64)
at /usr/src/sys/kern/uipc_syscalls.c:1285
#14 0xc0615eb0 in syscall (frame=
{tf_fs = 671809583, tf_es = 47, tf_ds = -1078001617, tf_edi = 134680576, t
f_esi = -1077943008, tf_ebp = -1077943032, tf_isp = -955388556, tf_ebx = 6718607
12, tf_edx = 0, tf_ecx = 0, tf_eax = 134, tf_trapno = 0, tf_err = 2, tf_eip = 67
3485263, tf_cs = 31, tf_eflags = 582, tf_esp = -1077943060, tf_ss = 47})
at /usr/src/sys/i386/i386/trap.c:1004
#15 0x282491cf in ?? ()
---Can't read userspace from dump, or kernel process---
(kgdb)
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