Date: Thu, 14 Jan 2010 11:24:02 -0500 From: Gardner Bell <gbell72@rogers.com> To: Tijl Coosemans <tijl@coosemans.org> Cc: Kostik Belousov <kostikbel@gmail.com>, freebsd-stable@freebsd.org Subject: Re: process in STOP state Message-ID: <4B4F4522.6010603@rogers.com> In-Reply-To: <201001140941.46748.tijl@coosemans.org> References: <4B4D0293.3040704@rogers.com> <4B4DC490.5070001@rogers.com> <20100113143649.GS62907@deviant.kiev.zoral.com.ua> <201001140941.46748.tijl@coosemans.org>
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Tijl Coosemans wrote: > On Wednesday 13 January 2010 15:36:49 Kostik Belousov wrote: >> On Wed, Jan 13, 2010 at 08:03:12AM -0500, Gardner Bell wrote: >>> Kostik Belousov wrote: >>>> On Tue, Jan 12, 2010 at 06:15:31PM -0500, Gardner Bell wrote: >>>>> Just updated my 8.0-STABLE desktop to r202128 the other day and >>>>> can no longer run certain windows executables through wine without >>>>> them almost immediately entering the STOP state and using 100% CPU >>>>> for a short period of time. Has anyone else ran into a similar >>>>> issue lately? >>>>> >>>>> I'm able to get the program to continue as normal by attaching the >>>>> pid trough gdb, but would for obvious reasons prefer not to do >>>>> that. Any help trying to find the underlying cause would be >>>>> appreciated as this has not been a problem with revisions previous >>>>> to r202128. >>>> You can check whether the process is multithreaded (most likely, it >>>> is), and, if so, what is the state of different threads. procstat >>>> -t <pid> and then procstat -k <pid> would probably give some >>>> information for the start. >>> Here's the output from procstat -k and -t. I've compiled my kernel >>> with KDB and DDB support if there is anything needed from that. >>> >>> PID TID COMM TDNAME CPU PRI STATE WCHAN >>> 44900 100162 wine initial thread 1 160 stop - >>> 44900 100178 wine - 1 131 stop - >>> 44900 100179 wine - 1 140 stop - >>> 44900 100180 wine - 0 160 stop piperd >>> 44900 100182 wine - 1 160 stop select >>> 44900 100183 wine - 0 160 stop - >>> 44900 100184 wine - 0 160 stop - >>> 44900 100185 wine - 1 160 stop - >>> 44900 100186 wine - 0 160 stop - >>> 44900 100190 wine - 0 160 stop - >>> 44900 100191 wine - 0 160 stop piperd >>> 44900 100192 wine - 1 160 stop - >>> 44900 100194 wine - 0 160 stop - >>> 44900 100195 wine - 0 141 stop piperd >>> 44900 100200 wine - 1 160 stop - >>> 44900 100201 wine - 1 160 stop - >>> 44900 100202 wine - 0 160 stop piperd >>> 44900 100203 wine - 1 160 stop piperd >>> 44900 100204 wine - 1 160 stop piperd >>> 44900 100205 wine - 0 160 stop - >>> 44900 100206 wine - 0 160 stop - >>> >>> %procstat -k 44900 >>> PID TID COMM TDNAME KSTACK >>> >>> 44900 100162 wine initial thread mi_switch >>> thread_suspend_check as >>> t doreti_ast >>> 44900 100178 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _cv_timedwait_sig seltdwait kern_select select >>> >>> syscall Xint0x80_syscall >>> 44900 100179 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _cv_timedwait_sig seltdwait kern_select select >>> >>> syscall Xint0x80_syscall >>> 44900 100180 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100182 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _cv_wait_sig seltdwait poll syscall Xint0x80_syscall >>> >>> >>> 44900 100183 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _cv_timedwait_sig seltdwait poll syscall Xint0x >>> >>> 80_syscall >>> 44900 100184 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _cv_timedwait_sig seltdwait kern_select select >>> >>> syscall Xint0x80_syscall >>> 44900 100185 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _cv_timedwait_sig seltdwait kern_select select >>> >>> syscall Xint0x80_syscall >>> 44900 100186 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _cv_timedwait_sig seltdwait kern_select select >>> >>> syscall Xint0x80_syscall >>> 44900 100190 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _cv_timedwait_sig seltdwait kern_select select >>> >>> syscall Xint0x80_syscall >>> 44900 100191 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100192 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100194 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100195 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100200 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _sleep kern_kevent kevent syscall Xint0x80_sysc >>> >>> all >>> 44900 100201 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _sleep kern_kevent kevent syscall Xint0x80_sysc >>> >>> all >>> 44900 100202 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100203 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100204 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_wait_sig >>> _sleep pipe_read dofileread kern_readv read syscall >>> >>> Xint0x80_syscall >>> 44900 100205 wine - mi_switch sleepq_switch >>> sleepq_ca >>> tch_signals sleepq_timedwait_sig >>> _sleep kern_kevent kevent syscall Xint0x80_sysc >>> >>> all >>> 44900 100206 wine - mi_switch >>> thread_suspend_switch c >>> ursig ast doreti_ast >> Besides weird formatting of procstat -k output, I do not see anything >> wrong in the state of the process. It got SIGSTOP, I am sure. >> Attaching gdb helps because debugger gets signal reports instead of >> target process getting the signal actions on signal delivery. >> >> The only question is why the process gets SIGSTOP at all. > > Wine uses ptrace(2) sometimes. The SIGSTOP could have come from that. > I recently submitted http://www.freebsd.org/cgi/query-pr.cgi?pr=142757 > describing a problem with ptrace and signals, so you might want to give > the kernel patch a try. > This patch fixes the issue of wine going into SIGSTOP. Thanks Tijl.
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