Re: Crash in libsystem_kernel.dylib`__workq_kernreturn:
On Jan 25, 2015, at 12:33 , Trygve Inda cocoa...@xericdesign.com wrote: It does seem like if I remove a call to NSData* imageData = [[self myImageRep] representationUsingType:NSJPEGFileType properties:imageProperties]; It no longer crashes, but the crash happens 3-5 seconds after this call when my program should be idle. It sounds like a memory management bug. What’s the context of the above line of code? Is it in a block? Are you using ARC? No ARC and not in a block. I am trying to make a jpg file from a NSBitmapImageRep which works fine, but sometimes I get a crash... Even though the file is correctly produced. ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Crash in libsystem_kernel.dylib`__workq_kernreturn:
On Jan 25, 2015, at 12:33 , Trygve Inda cocoa...@xericdesign.com wrote: It does seem like if I remove a call to NSData* imageData = [[self myImageRep] representationUsingType:NSJPEGFileType properties:imageProperties]; It no longer crashes, but the crash happens 3-5 seconds after this call when my program should be idle. It sounds like a memory management bug. What’s the context of the above line of code? Is it in a block? Are you using ARC? ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Crash in libsystem_kernel.dylib`__workq_kernreturn:
What are you using for memory management then? Manual, GC? Sent from my iPad On 25 Jan 2015, at 22:57, Trygve Inda cocoa...@xericdesign.com wrote: On Jan 25, 2015, at 12:33 , Trygve Inda cocoa...@xericdesign.com wrote: It does seem like if I remove a call to NSData* imageData = [[self myImageRep] representationUsingType:NSJPEGFileType properties:imageProperties]; It no longer crashes, but the crash happens 3-5 seconds after this call when my program should be idle. It sounds like a memory management bug. What’s the context of the above line of code? Is it in a block? Are you using ARC? No ARC and not in a block. I am trying to make a jpg file from a NSBitmapImageRep which works fine, but sometimes I get a crash... Even though the file is correctly produced. ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/ktam%40yvs.eu.com This email sent to k...@yvs.eu.com ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Crash in libsystem_kernel.dylib`__workq_kernreturn:
What are you using for memory management then? Manual, GC? Sent from my iPad On 25 Jan 2015, at 22:57, Trygve Inda cocoa...@xericdesign.com wrote: On Jan 25, 2015, at 12:33 , Trygve Inda cocoa...@xericdesign.com wrote: It does seem like if I remove a call to NSData* imageData = [[self myImageRep] representationUsingType:NSJPEGFileType properties:imageProperties]; It no longer crashes, but the crash happens 3-5 seconds after this call when my program should be idle. It sounds like a memory management bug. What’s the context of the above line of code? Is it in a block? Are you using ARC? No ARC and not in a block. I am trying to make a jpg file from a NSBitmapImageRep which works fine, but sometimes I get a crash... Even though the file is correctly produced. Manual (no GC). I am also using memory-mapped files with mmap and munmap. Trygve ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Crash in libsystem_kernel.dylib`__workq_kernreturn:
I agree that it sounds like a memory management bug. Especially since you aren't using ARC. Try turning on NSZombies and see if it crashes at a more helpful point. http://michalstawarz.pl/2014/02/22/debug-exc_bad_access-nszombie-xcode-5/ On Sun, Jan 25, 2015 at 4:57 PM, Trygve Inda cocoa...@xericdesign.com wrote: On Jan 25, 2015, at 12:33 , Trygve Inda cocoa...@xericdesign.com wrote: It does seem like if I remove a call to NSData* imageData = [[self myImageRep] representationUsingType:NSJPEGFileType properties:imageProperties]; It no longer crashes, but the crash happens 3-5 seconds after this call when my program should be idle. It sounds like a memory management bug. What’s the context of the above line of code? Is it in a block? Are you using ARC? No ARC and not in a block. I am trying to make a jpg file from a NSBitmapImageRep which works fine, but sometimes I get a crash... Even though the file is correctly produced. ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/stephen.butler%40gmail.com This email sent to stephen.but...@gmail.com ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Crash in libsystem_kernel.dylib`__workq_kernreturn:
I am getting a very weird, random crash in: libsystem_kernel.dylib`__workq_kernreturn: 0x7fff8381de60: movl $0x2000170, %eax 0x7fff8381de65: movq %rcx, %r10 0x7fff8381de68: syscall 0x7fff8381de6a: jae0x7fff8381de74; __workq_kernreturn + 20 0x7fff8381de6c: movq %rax, %rdi 0x7fff8381de6f: jmp0x7fff8381a175; cerror_nocancel 0x7fff8381de74: retq 0x7fff8381de75: nop 0x7fff8381de76: nop 0x7fff8381de77: nop How can I track this down since it does not seem to be tied to anything specific. It does seem like if I remove a call to NSData* imageData = [[self myImageRep] representationUsingType:NSJPEGFileType properties:imageProperties]; It no longer crashes, but the crash happens 3-5 seconds after this call when my program should be idle. Thanks Never seen anything like this and have spent several hours trying to track it down. Trygve ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
