Date: Wed, 22 Jun 2005 19:45:42 +0800 (CST) From: Tai-hwa Liang <avatar@mmlab.cse.yzu.edu.tw> To: Khetan Gajjar <khetan@os.org.za> Cc: current@freebsd.org Subject: Re: Panic potentially related to imgacct_shell.c commit Message-ID: <05062219434218.29380@www.mmlab.cse.yzu.edu.tw> In-Reply-To: <20050621174902.G1593@bastion.os.org.za> References: <20050621174902.G1593@bastion.os.org.za>
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On Tue, 21 Jun 2005, Khetan Gajjar wrote:
[...]
> (kgdb) backtrace
> 165 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
> #0 doadump () at pcpu.h:165
> #1 0xc04f9568 in boot (howto=260) at ../../../kern/kern_shutdown.c:397
> #2 0xc04f987d in panic (fmt=0xc069d6ac "cur != NULL")
> at ../../../kern/kern_shutdown.c:553
> #3 0xc0593a4c in tcp_sack_option (tp=0xc23c0730, th=0xd4400aac,
> cp=0xc242da66 "\005\022\002Nu\020\002Nz\223\002N\200\026\002N¬.\223¦T\222!¸Ï+zYã¬+<Û\031\016Öñêî1£\006\177~\017A·\221æºu\227$Ñ9Tõ\232ÿ\003\024\234îÅs¦a\206¨e\236ôLZÔï\r] imapd[8272]: login: dustpuppy.is.co.za[19", optlen=0)
> at ../../../netinet/tcp_sack.c:478
> #4 0xc0591a3b in tcp_dooptions (tp=0xc23c0730, to=0xd4400bb4,
> cp=0xc242da66 "\005\022\002Nu\020\002Nz\223\002N\200\026\002N¬.\223¦T\222!¸Ï+zYã¬+<Û\031\016Öñêî1£\006\177~\017A·\221æºu\227$Ñ9Tõ\232ÿ\003\024\234îÅs¦a\206¨e\236ôLZÔï\r] imapd[8272]: login: dustpuppy.is.co.za[19", cnt=18, is_syn=0,
> th=0xc242da44) at ../../../netinet/tcp_input.c:2647
Try "sysctl net.inet.tcp.sack.enable=0" to see if that helps.
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