Re: asl_log aborts the program?
On 20 Nov 2009, at 06:33, Chris Idou wrote: I've got a report from a user of my program crashing. In the console they are getting this: 11/19/09 3:08:46 PM[0x0-0x18a18a]Progname[8699]Progname(8699,0x1167b) malloc: *** error for object 0x100563870: pointer being freed was not allocated 11/19/09 3:08:46 PM[0x0-0x18a18a] Progname[8699]*** set a breakpoint in malloc_error_break to debug Thread 2 Crashed: 0 libSystem.B.dylib 0x7fff87a7784d usleep$NOCANCEL + 0 1 libSystem.B.dylib 0x7fff87a96e3c abort + 93 2 libSystem.B.dylib 0x7fff879ae155 free + 128 3 libSystem.B.dylib 0x7fff879fa16e asl_set_query + 572 4 libSystem.B.dylib 0x7fff87a16239 asl_send + 824 5 libSystem.B.dylib 0x7fff87a15e56 asl_vlog + 570 6 libSystem.B.dylib 0x7fff87a15c19 asl_log + 153 7 Progname.CocoaTools0x000104567101 -[Log vlogLevel:format:arguments:] + 270 8 Progname.CocoaTools0x00010456730c -[Log notice:] + 164 etc Does this look like an Apple bug? It looks to me like the asl subsystem is freeing something it shouldn't and aborting the program. Normally when I see crashes involving calls to methods with format strings, I immediately assume that the arguments following the the format string do not match the format specifiers in the format string. e.g. if -[Log notice:] is declared like this -(void) notice: (NSString*) format, ...; [log notice: @blah blah blah %@ %s, blah]; The above line has an NSObject missing from its argument list. There's also [log notice: someNSStringofIndeterminateOrigin]; which may crash if the string contains format specifiers e.g. if it is a URL with % escapes in it. So you probably want to check your calls to -[Log notice:]. __ Win 1 of 4 Sony home entertainment packs thanks to Yahoo!7. Enter now: http://au.docs.yahoo.com/homepageset/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/adc%40jeremyp.net This email sent to a...@jeremyp.net __ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email __ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: asl_log aborts the program?
I just noticed something I didn't see before, namely that the doco says to call asl_open once for each thread, which I'm not doing. I guess this most likely is the cause. From: Jeremy Pereira a...@jeremyp.net To: Chris Idou idou...@yahoo.com; Cocoa Forum cocoa-dev@lists.apple.com Cc: Jeremy Pereira a...@jeremyp.net Sent: Fri, 20 November, 2009 9:35:01 PM Subject: Re: asl_log aborts the program? On 20 Nov 2009, at 06:33, Chris Idou wrote: I've got a report from a user of my program crashing. In the console they are getting this: 11/19/09 3:08:46 PM[0x0-0x18a18a]Progname[8699]Progname(8699,0x1167b) malloc: *** error for object 0x100563870: pointer being freed was not allocated 11/19/09 3:08:46 PM[0x0-0x18a18a] Progname[8699]*** set a breakpoint in malloc_error_break to debug Thread 2 Crashed: 0 libSystem.B.dylib 0x7fff87a7784d usleep$NOCANCEL + 0 1 libSystem.B.dylib 0x7fff87a96e3c abort + 93 2 libSystem.B.dylib 0x7fff879ae155 free + 128 3 libSystem.B.dylib 0x7fff879fa16e asl_set_query + 572 4 libSystem.B.dylib 0x7fff87a16239 asl_send + 824 5 libSystem.B.dylib 0x7fff87a15e56 asl_vlog + 570 6 libSystem.B.dylib 0x7fff87a15c19 asl_log + 153 7 Progname.CocoaTools0x000104567101 -[Log vlogLevel:format:arguments:] + 270 8 Progname.CocoaTools0x00010456730c -[Log notice:] + 164 etc Does this look like an Apple bug? It looks to me like the asl subsystem is freeing something it shouldn't and aborting the program. Normally when I see crashes involving calls to methods with format strings, I immediately assume that the arguments following the the format string do not match the format specifiers in the format string. e.g. if -[Log notice:] is declared like this -(void) notice: (NSString*) format, ...; [log notice: @blah blah blah %@ %s, blah]; The above line has an NSObject missing from its argument list. There's also [log notice: someNSStringofIndeterminateOrigin]; which may crash if the string contains format specifiers e.g. if it is a URL with % escapes in it. So you probably want to check your calls to -[Log notice:]. __ Win 1 of 4 Sony home entertainment packs thanks to Yahoo!7. Enter now: http://au.docs.yahoo.com/homepageset/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/adc%40jeremyp.net This email sent to a...@jeremyp.net __ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email __ __ Win 1 of 4 Sony home entertainment packs thanks to Yahoo!7. Enter now: http://au.docs.yahoo.com/homepageset/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: asl_log aborts the program?
On Nov 19, 2009, at 10:33 PM, Chris Idou wrote: Thread 2 Crashed: 0 libSystem.B.dylib 0x7fff87a7784d usleep$NOCANCEL + 0 1 libSystem.B.dylib 0x7fff87a96e3c abort + 93 2 libSystem.B.dylib 0x7fff879ae155 free + 128 3 libSystem.B.dylib 0x7fff879fa16e asl_set_query + 572 ASL isn't aborting; it's free() that's aborting. Probably it discovered that your heap is corrupted [note the prior malloc error log] and bailed out. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
asl_log aborts the program?
I've got a report from a user of my program crashing. In the console they are getting this: 11/19/09 3:08:46 PM[0x0-0x18a18a]Progname[8699]Progname(8699,0x1167b) malloc: *** error for object 0x100563870: pointer being freed was not allocated 11/19/09 3:08:46 PM[0x0-0x18a18a] Progname[8699]*** set a breakpoint in malloc_error_break to debug And in the crash report: Process: Progname [11128] Path:/Applications/Progname.app/Contents/MacOS/Progname Identifier: Progname Version: 1.19 (19) Code Type: X86-64 (Native) Parent Process: launchd [180] Date/Time: 2009-11-19 17:40:42.570 -0500 OS Version: Mac OS X 10.6.2 (10C540) Report Version: 6 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x, 0x Crashed Thread: 2 Application Specific Information: abort() called objc[11128]: garbage collection is ON Thread 0: Dispatch queue: com.apple.main-thread 0 libSystem.B.dylib 0x7fff879a7e3a mach_msg_trap + 10 1 libSystem.B.dylib 0x7fff879a84ad mach_msg + 59 2 com.apple.CoreFoundation 0x7fff86c997a2 __CFRunLoopRun + 1698 3 com.apple.CoreFoundation 0x7fff86c98c2f CFRunLoopRunSpecific + 575 4 com.apple.HIToolbox 0x7fff865b9a4e RunCurrentEventLoopInMode + 333 5 com.apple.HIToolbox 0x7fff865b9853 ReceiveNextEventCommon + 310 6 com.apple.HIToolbox 0x7fff865b970c BlockUntilNextEventMatchingListInMode + 59 7 com.apple.AppKit 0x7fff815f31f2 _DPSNextEvent + 708 8 com.apple.AppKit 0x7fff815f2b41 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155 9 com.apple.AppKit 0x7fff815b8747 -[NSApplication run] + 395 10 Progname 0x00010eea main + 76 11 Progname 0x00010e7c start + 52 Thread 1: Dispatch queue: com.apple.libdispatch-manager 0 libSystem.B.dylib 0x7fff879c0bba kevent + 10 1 libSystem.B.dylib 0x7fff879c2a85 _dispatch_mgr_invoke + 154 2 libSystem.B.dylib 0x7fff879c275c _dispatch_queue_invoke + 185 3 libSystem.B.dylib 0x7fff879c2286 _dispatch_worker_thread2 + 244 4 libSystem.B.dylib 0x7fff879c1bb8 _pthread_wqthread + 353 5 libSystem.B.dylib 0x7fff879c1a55 start_wqthread + 13 Thread 2 Crashed: 0 libSystem.B.dylib 0x7fff87a7784d usleep$NOCANCEL + 0 1 libSystem.B.dylib 0x7fff87a96e3c abort + 93 2 libSystem.B.dylib 0x7fff879ae155 free + 128 3 libSystem.B.dylib 0x7fff879fa16e asl_set_query + 572 4 libSystem.B.dylib 0x7fff87a16239 asl_send + 824 5 libSystem.B.dylib 0x7fff87a15e56 asl_vlog + 570 6 libSystem.B.dylib 0x7fff87a15c19 asl_log + 153 7 Progname.CocoaTools0x000104567101 -[Log vlogLevel:format:arguments:] + 270 8 Progname.CocoaTools0x00010456730c -[Log notice:] + 164 etc Does this look like an Apple bug? It looks to me like the asl subsystem is freeing something it shouldn't and aborting the program. __ Win 1 of 4 Sony home entertainment packs thanks to Yahoo!7. Enter now: http://au.docs.yahoo.com/homepageset/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
