On Sun, Jun 6, 2010 at 3:00 AM, Maciej Rutecki <maciej.rutecki@xxxxxxxxx> wrote: > I created a Bugzilla entry at > https://bugzilla.kernel.org/show_bug.cgi?id=16139 > for your bug report, please add your address to the CC list in there, thanks! > > On piątek, 28 maja 2010 o 18:44:46 Shirish Pargaonkar wrote: >> After this sequence of calls, system hangs (smp, x86 box based with >> .34 kernel), can ping only. >> I have not been able to break in with Alt Sysrq t, working on that >> >> rc = wait_event_interruptible_timeout(ses->server->response_q, >> (midQ->midState != MID_REQUEST_SUBMITTED), >> timeout); if (rc < 0) { >> cFYI(1, ("command 0x%x interrupted", midQ->command)); >> return -1; >> } >> >> and when function that invoking function after coming out with ERESTARTSYS >> (I kill the command with Ctrl C) calls >> spin_lock(&GlobalMid_Lock); >> >> system hangs. If I sleep before return -1 (e.g. msleep(1), no hang) >> >> I do not have to use wait_event_interruptible_timeout and no such problems >> with wait_event_timeout, it is only when signal/interrupt is involved, I >> run into this problem >> >> Any pointers/ideas what could be happening, would be really really >> appreciated. >> >> Regards, >> >> Shirish >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ >> > > -- > Maciej Rutecki > http://www.maciek.unixy.pl > Thanks. Shaggy told me what I think is happening should not be for following reasons. "The process doesn't receive the signal in the kernel unless it specifically checks for it, or it exits a system call. There shouldn't be a spinlock held in either situation. " I will update the bug as well. Regards, Shirish -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
